BEGIN:VCALENDAR METHOD:PUBLISH X-WR-TIMEZONE:US/Eastern PRODID:-//Apple Inc.//iCal 3.0//EN CALSCALE:GREGORIAN X-WR-CALNAME:Physics Colloquium VERSION:2.0 X-WR-RELCALID:45A1591B-A79A-4945-A6B5-FB89BCAFC3D9 X-APPLE-CALENDAR-COLOR:#2CA10B BEGIN:VTIMEZONE TZID:US/Eastern BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:19551030T020000 RRULE:FREQ=YEARLY;UNTIL=20061029T060000Z;BYMONTH=10;BYDAY=-1SU TZNAME:EST END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 DTSTART:19870405T020000 RRULE:FREQ=YEARLY;UNTIL=20060402T070000Z;BYMONTH=4;BYDAY=1SU TZNAME:EDT END:DAYLIGHT BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:EDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:EST END:STANDARD END:VTIMEZONE BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:C89A55AB-47C1-4E87-8379-ECA09FFFE027 DTSTART;TZID=US/Eastern:20060323T153000 DTSTAMP:20070620T140707Z SUMMARY:Finals Week (No Colloquium) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060323T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:9 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"Protein-induced topological changes in DNA\" by Prof. Laura Finzi (Emory University)\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nProf. Laura Finzi\nEmory University\nDepartment of Phys ics\n\nTIME: Thursday March 1st\, 3:30 pm\nLOCATION : DISQUE 919\n\nABST RACT\n\nMany regulatory mechanisms in DNA transcription are based on rel atively simple topological changes of the double helix induced by protei ns. Single-molecule microscopy and manipulation techniques are powerful in characterizing the role of physical parameters involved in such mecha nisms and their interplay. I will present the work done in my laboratory in order to characterize the looping induced in DNA by two repressors o f transcription: the Gal repressor and the lambda repressor. The use of the tethered particle motion (TPM) technique and of magnetic tweezers a llowed us to study the interplay between looping and i) other DNA bendin g proteins ii) DNA supercoiling\, in these two cases. Such studies are r elevant for the understanding of the molecular mechanism of transcriptio nal regulation. UID:561B9886-B4F9-4A4B-B782-4949013F1F9D TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070301T153000 DTSTAMP:20070620T140707Z SUMMARY:Laura Finzi (host: Guoliang Yang) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070301T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:CF3FD4F5-D2DD-42AC-89E0-B09EEFF58583 DTSTART;TZID=US/Eastern:20060609T140000 DTSTAMP:20070620T140707Z SUMMARY:Dawei Hu Thesis Defense Disque 919 CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060609T150000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nThe MUSYC Census of Protogalaxies at z=3\nEric Gawiser (Ya le University)\n\nDespite recent advances in the study of galaxy formati on\, the progenitors\nof typical galaxies like the Milky Way have yet to be identified. The\nMultiwavelength Survey by Yale-Chile (MUSYC) is in vestigating high-redshift\nprotogalaxies in order to separate physical p roperties from selection\neffects. These protogalaxies include Lyman al pha emitters\, Lyman break\ngalaxies\, Distant red galaxies\, Damped Lym an alpha absorption systems and\nActive Galactic Nuclei. MUSYC includes deep optical\, infrared and\nX-ray imaging of a square degree of sky al ong with follow-up spectroscopy\nfrom Gemini\, Magellan\, and the Very L arge Telescopes. I will present\nmeasurements of the dark matter halo m asses and overlap fractions of these\npopulations and of the total cosmi c star formation rate and stellar mass\ndensities at z=3. MUSYC publica tions and data releases are available at\nhttp://www.astro.yale.edu/MUSY C .\n\nReferences:\n(MUSYC) Gawiser et al. 2005\, ApJS\, astro-ph/050920 2\n(Damped Lyman alpha systems) Wolfe\, G UID:9531B8D5-DA62-430F-AB9B-20DFE62BBA0E TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060221T153000 DTSTAMP:20070620T140707Z SUMMARY:Eric Gawiser (Yale) \"The MUSYC Census of Protogalaxies at z=3\ " CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060221T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Talk:\n\nBig Open Problems in Understanding the Universe\n\n In modern physics\, we have learned to formulate the laws for the behavi or of\nmatter\, and for the large-scale organization of matter\, in term s of standard\nmodels incorporating a very few parameters. We have no co mpelling theory for\nwhy the values of these parameters are what they ar e\, yet small changes in\nthose values would appear to have catastrophic consequences for the possible\nemergence of complex structures and ulti mately intelligent life. Recent\ndevelopments in inflationary cosmology\ , axion physics\, and string theory are\nbringing questions of this sort to the top of the agenda of theoretical\nphysics. Are fundamental param eters of physics determined\, in whole or in\npart\, by “selecting”\, am ong many existing candidate universes\, only those\nthat can be observed ? I’ll describe the crucial issues in a simple but\nconcrete way.\n\nBio graphy\n\n \n\nProfessor Frank Wilczek is considered one of the world's most eminent theoretical physicists. He is known\, among other things\, for the discovery of asymptotic freedom\, the development of quantum chr omodynamics\, the invention of axions\, and the discovery and exploitati on of new forms of quantum statistics (anyons). When only 21 years old a nd a graduate student at Princeton University\, in work with David Gross he defined the properties of color gluons\, which hold atomic nuclei to gether.\n\n \n\nProfessor Wilczek received his B.S. degree from the Univ ersity of Chicago and his Ph.D. from Princeton University. He taught at Princeton from 1974-81. During the period 1981-88\, he was the Chancello r Robert Huttenback Professor of Physics at the University of California at Santa Barbara\, and the first permanent member of the National Scien ce Foundation's Institute for Theoretical Physics. In the fall of 2000\, he moved from the Institute for Advanced Study\, where he was the J.R. Oppenheimer Professor\, to the Massachusetts Institute of Technology\, w here he is the Herman Feshbach Professor of Physics. Since 2002\, he has been an Adjunct Professor in the Centro de Estudios Científicos of Vald ivia\, Chile.\n\n \n\nProfessor Wilczek has been a Sloan Foundation Fell ow (1975-77) and a MacArthur Foundation Fellow (1982-87). He has receive d UNESCO's Dirac Medal\, the American Physical Society's Sakurai Prize\, the Michelson Prize from Case Western University\, and the Lorentz Meda l of the Netherlands Academy for his contributions to the development of theoretical physics. In 2004 he received the Nobel Prize in Physics\, a nd in 2005 the King Faisal Prize. He is a member of the National Academy of Sciences\, the Netherlands Academy of Sciences\, and the American Ac ademy of Arts and Sciences\, and is a Trustee of the University of Chica go. He contributes regularly to Physics Today and to Nature\, explaining topics at the frontiers of physics to wider scientific audiences. He re ceived the Lilienfeld Prize of the American Physical Society for these a ctivities. Two of his pieces have been anthologized in Best American Sci ence Writing (2003\, 2005). Together with his wife Betsy Devine\, he wro te a beautiful book\, Longing for the Harmonies (W.W. Norton).\n\n \n\n[ \n UID:4506613A-D8CD-4045-A61A-6834BDAB701A TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20051110T153000 DTSTAMP:20070620T140707Z SUMMARY:Kaczmarczik Lecture Frank Wilczek\n(MIT) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20051110T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:08FB14B5-0E64-4D04-B937-616816F944E2 DTSTART;TZID=US/Eastern:20060608T151500 DTSTAMP:20070620T140707Z SUMMARY:Earnest Mamikonyan Thesis Defense CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060608T171500 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker Nicholas Giordano (Purdue)\nHost: Len Finegold (Phys ics) l@drexel.edu\nTitle: Physics of the Piano\nTime: May 12th 2005\nLoc ation: Disque 919\nAbstract: \n\nWhile a piano is a complicated mechanic al device\, it can presumably be described by physics at the level of fr eshman mechanics (i.e.\, field theory should not be required). In spite of this apparent simplicity\, it is very difficult to use Newton's laws to calculate the sound produced by a piano. In this talk I will give a b rief introduction to the physics of the piano\, and describe a few of th e interesting problems involved in constructing such a physical model of the instrument. I will then describe our attempts to calculate the soun d produced by a piano from first principles\; i.e.\, using \nF = ma. UID:DBF400EE-2690-4641-8FF1-6A72DAD31A28 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050512T153000 DTSTAMP:20070620T140707Z SUMMARY:Nicholas Giordano (Purdue University) \"The Physics of The Piano \" Disque 919 CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050512T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\n\nAleksandar Donev\nComplex Materials Theory Group\nPrince ton Materials Institute & Program in Applied and Computational\nMathemat ics\nPrinceton University\n\nDisque 909 \nMay 26th 2005\n\nJammed Packin gs of Hard Ellipsoids\n\nI will discuss recent computational and experim ental work aimed at\nunderstanding the properties of disordered (random) and ordered\n(crystalline) jammed packings of hard ellipsoidal particle s. Using computer\nsimulations\, we find that the density of the random packings increases\nsubstantially when asphericity is added\, from 64% t ypical of sphere\npackings\, to a remarkable 74% achievable with spheres only for the perfect\ncrystal. Similarly\, the contact number rises fro m 6 to as much as 12. We\nalso identify a candidate for the densest (cry stal) packing of ellipsoids\,\nas dense as 77%. Experiments have been pe rformed on both M&M candies\n(prolate ellipsoids) and laboratory-manufac tured ellipsoids that verify the\ncomputational predictions and their ap plicability to realistic systems.\n\n\nHost:\nLen Finegold Physics 895-2 740 L@Drexel.edu\n\n\n\nReferences (all on my webpage http://atom.prin ceton.edu/donev/):\n1. \"Improving the Density of Jammed Disordered Pack ings using\nEllipsoids'' by Aleksandar Donev\, Ibrahim Cisse\, David Sac hs\, Evan A.\nVariano\, Frank H. Stillinger\, Robert Connelly\, Salvator e Torquato and\nP. M. Chaikin\, Science\, 303:990-993\, 2004.\n2. \"Unus ually Dense Crystal Packings of Ellipsoids''\, by A. Donev\, F. H.\nStil linger\, P. M. Chaikin and S. Torquato\, Phys. Rev. Lett.\, 92\,\n255506 \, 2004\, [cond-mat/0110034]\n3. \"Neighbor List Collision-Driven Molec ular Dynamics Simulation for\nNonspherical Particles. I. Algorithmic Det ails II. Applications to\nEllipses and Ellipsoids''\, by A. Donev\, F. H . Stillinger\, and S.\nTorquato\, J. Comp. Phys\, 202(2): 737-764 (part I) and 765-793 (part\nII)\, 2005\, [physics/0110034]\n4. \"Experiments on the Random Packing of Ellipsoids\"\, W. Man\, A. Donev \,\nF. H. Sti llinger\, W. B. Russel\, D. Heeger \, S. Inati\, S. Torquato and\nP. M. Chaikin\, 2004\, in preparation.\n\n\n\n UID:6BD5D313-0975-44D1-8893-5DBFA761B564 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050526T153000 DTSTAMP:20070620T140707Z SUMMARY:Aleksandar Donev (Princeton University) Jammed Packings of Hard Ellipsoids CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050526T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: David Kutzik\nHost: Len Finegold\n\nLocation Disque 919\nTime: June 2nd 3:30 pm\n\nTitle: Early Radio - Physics\nAbstract : TBA\n UID:A39626F3-F11C-475F-97B1-23BA232EA5F6 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050602T153000 DTSTAMP:20070620T140707Z SUMMARY:David Kutzik (Drexel University) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050602T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:9303E91D-1EA3-4F99-BD9F-E9F0BC190282 DTSTART;TZID=US/Eastern:20060420T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060420T161500 END:VEVENT BEGIN:VEVENT SEQUENCE:1 DESCRIPTION:\n\nThe Department of Physics cordially invites you to atten d a Colloquium\nLecture on \"From protein unfolding to stem cell biophys ics - the key role of\nelasticity in biology\" by Prof. Dennis Discher ( U. Penn.)\n\n\nColloquium Seminar Series\nDepartment of Physics\nDREXEL UNIVERSITY\n\n\nBiophysical Engineering Lab\nUniversity of Pennsylvania\ n\nTIME: Thursday 3:30 pm November 17rd 2005\nLOCATION : DISQUE 919\n\nA BSTRACT\n\nThe largest gene in the human genome encodes for a structural protein\nthat has relatively clear roles in cell mechanics and highligh ts the\nimportance of protein flexibility in cell function. Single mole cule\nstudies will be described that probe the unfolding and elasticity of\nsuch proteins. This will be followed by description experiments at\ nthe cell level - focused on the differentiation of stem cells - that\nc learly emphasize the critical importance of elasticity in cell and\ndeve lopmental biology.\n\n UID:5C7FE4FA-0EB8-4A5F-93B7-81F0D48BE656 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20051117T153000 DTSTAMP:20070620T140707Z SUMMARY:The Department of Physics cordially invites you to attend a Coll oquium\nLecture on \"From protein unfolding to stem cell biophysics - th e key role of\nelasticity in biology\" by Prof. Dennis Discher (U. Penn. )\n CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20051117T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Studying the highest energy cosmic rays with the Pierre Auger Observatory -- prospects for charged particle astronomy\" by Prof. Paul Sommers (Pennsylvania State University)\n\nDREXEL UNIVERSI TY\nDepartment of Physics\n\n\nProf. Paul Sommers\nPennsylvania State Un iversity\nDepartment of Physics\n\nTIME: Thursday April 12th\, 3:30 pm\n LOCATION : DISQUE 919\n\nABSTRACT\n\nThe southern site of the Pierre Aug er Cosmic Ray Observatory will be completed this year in Argentina. It has been accumulating data since 2004\, and its data set is already seve ral times larger than that of earlier experiments. It combines a surfac e array of particle detectors along with air fluorescence telescopes tha t measure the\ndevelopment of cosmic ray air showers in the atmosphere a bove the surface. There is reason to hope that the sources of the highe st energy particles will finally be discovered.\n UID:44AB7D97-6B37-4AA7-8C25-013D89350967 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070412T153000 DTSTAMP:20070620T140707Z SUMMARY:Paul Sommers (Host: Jelena Maricic) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070412T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:49DFBC41-478D-410A-BAA8-073335E1FB42 DTSTART;TZID=US/Eastern:20080612T153000 DTSTAMP:20070723T154801Z SUMMARY:Finals Week (No Colloquium) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080612T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 TRANSP:OPAQUE UID:32AA608D-80B2-4402-ADD5-215A1157F5CA DTSTART;VALUE=DATE:20060929 DTSTAMP:20070620T140707Z SUMMARY:Last Day to File Application for Degree (Fall Degree Candidates) CREATED:20071202T022831Z DTEND;VALUE=DATE:20060930 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:The Viscoelastic Properties of Single Fibrin Fibers\nM. Guth old\nDepartment of Physics\, Wake Forest University\, Winston-Salem\, NC 27109\n\nBlood clots stem the flow of blood\, which\, ultimately\, is a mechanical task. The principal structural component of a blood clot is a branched network of fibrin fibers. Although the mechanical propertie s of whole clots have been studied for decades\, there are almost no dat a available on the mechanical properties of the individual fibrin fibers that comprise the clot. This knowledge gap has severely hampered the development of good mechanical models of a clot. \nUsing a combined ato mic force and fluorescence microscope we have\, for the first time\, col lected complete stress-strain curves of single fibrin fibers. From thes e curves\, we have determined the following\, previously unknown\, prope rties of fibrin fibers. 1) Fibrin fibers have an extremely large extens ibility as they can be stretched to over 330% extension before breaking. 2) Fibrin fibers show viscoelastic behavior\, i.e. the stretching modu lus has a ~40% viscous and ~60% elastic component at our stretching spee ds. 3) In multiple stretch cycles\, fibrin fibers show up to 85% hystere sis. 4) The initial Young’s modulus of fibrin fibers is about 5 MPa\, but it increases with increasing strain (strain hardening). When held at constant strain (extension) fibrin fibers relax\, (i.e stress decreases at a fixed strain value). This stress relaxation of fibrin fibers is i ndependent of strain and\, interestingly\, displays a fast (0.67 s-1) an d a slow (0.03 s-1) rate.\nThe implications of these findings to blood c lotting will be discussed. \n UID:05690716-DEFE-4616-AA41-FED4B7674631 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060504T153000 DTSTAMP:20070620T140707Z SUMMARY:Martin Guthold (Wake Forest University) Host : Dr. Yang CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060504T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:F05CE5FF-E665-409F-91EC-8513DFFFAC94 DTSTART;VALUE=DATE:20070317 DTSTAMP:20070620T140707Z SUMMARY:Last Day of Classes CREATED:20071202T022832Z DTEND;VALUE=DATE:20070318 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:38D5BF40-35D8-4071-A733-0EF58FCE5E75 DTSTART;TZID=US/Eastern:20070329T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquium - Holiday CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070329T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:9 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium Lecture on \"The rise and fall of Active Galactic Nuclei\" by Anca Constantin (Drexel University)\n\nColloquium Seminar Series\nDepar tment of Physics\nDrexel University\n\nDr. Anca Constantin\nDrexel Unive rsity\n\nTIME: Thursday 3:30 pm November 9nd 2006\nLOCATION : DISQUE 919 \n\nABSTRACT\n\nActive Galactic Nuclei exist over a wide range of redshi fts (z)\,\nhowever\, relatively little attention has been given to the e mission\nproperties of these sources beyond the ``quasar era.'' Objects at\nvery high z are of interest as tracers of accretion physics as well \nas chemical enrichment of their emitting gas\, which in turn can\nreve al information on the early star formation history. In the\nlocal unive rse\, low-luminosity emission-line galaxy nuclei that\nresemble quasars in their spectra are surprisingly abundant\,\nhowever\, the degree to wh ich these sources are in fact powered by\naccretion remains controversia l. Thus\, careful scrutiny of these\nsystems' properties is needed in o rder to obtain an accurate census\nof the local accreting massive black holes. I will present the\nresults of my investigations for common grou nds for the diversity of\nproperties exhibited by the active nuclei from large look-back times\n(z > 4) and of those in the local universe (z ~ 0)\, and discuss the\nimplications for the formation and evolution of ga laxies in the\nuniverse.\n\n\n\n\n\n UID:F5479F95-4AA7-4ED8-9FDC-713AABDEF22E TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061109T153000 DTSTAMP:20070620T140707Z SUMMARY:Anca Constantin (Host Michael Vogeley) CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20061109T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: Rongjia Tao (Temple University)\nTitle: A Universal and Powerful Method to Reduce Viscosity of Liquid Suspensions\nand Emul sions\nHost: Guoliang Yang (Physics) gyang@physics.drexel.edu\nLocation: Disque 919\nTime: March 10th 3:30 pm\nAbstract: \n\nViscosity of liquid suspensions and emulsions is of great importance in all\ndisciplinary a reas in science and engineering. Controlling the viscosity is\nvital. In electrorheological (ER) or magentorheological (MR) fluids\,\nelectric o r magnetic field is used to increase the viscosity. However\, in\nmost c ases we need to lower the viscosity. For example\, reducing blood's\nvis cosity improves circulation and prevents cardiovascular events. Lowering \nthe viscosity of crude oil is the key to transporting offshore oil via \nundersea pipelines. Unfortunately\, to date there are no effective met hods\nfor reducing the viscosity except by changing the temperature. In case that\nchanging temperature is not an option\, such as in the above examples\,\nreducing the viscosity becomes formidable. Here we present a theory and\nexperimental results showing that application of a suitabl e electric or\nmagnetic field pulse can significantly reduce the viscosi ty for several\nhours with no change of temperature. Positive experiment al results with MR\nfluids and crude oil indicate that this method\, dev eloped from the basic\nmechanism of viscosity\, is universal and powerfu l for all liquid suspensions\nand emulsions with broad future applicatio ns.\n UID:6ACB88B5-AC09-4AFC-8BF2-5114019FC3F8 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050310T153000 DTSTAMP:20070620T140707Z SUMMARY:Rongjia Tao (Temple University) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050310T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:C969D531-ACC2-411C-8A89-381EF555E777 DTSTART;TZID=US/Eastern:20050407T153000 DTSTAMP:20070620T140707Z SUMMARY:Colloquium CANCELLED CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050407T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:C983E42D-EB92-4D40-B527-DE95B950CE34 DTSTART;VALUE=DATE:20071008 DTSTAMP:20070723T153716Z SUMMARY:Columbus day (University Holiday) CREATED:20071202T022832Z DTEND;VALUE=DATE:20071009 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:1C42017B-5D6C-458D-A683-5EF116D6562D DTSTART;TZID=US/Eastern:20051020T153000 DTSTAMP:20070620T140707Z SUMMARY:RESERVED CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20051020T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:EC1A1009-146F-4501-9D98-6DC6E882C2B2 DTSTART;TZID=US/Eastern:20060112T153000 DTSTAMP:20070620T140707Z SUMMARY:First Week of Classes (No Colloquium) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060112T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:1 TRANSP:OPAQUE UID:A51BD084-B16A-47B1-8964-B2B20C5FBCCB DTSTART;TZID=US/Eastern:20071116T140000 DTSTAMP:20071107T181428Z SUMMARY:New Event CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20071116T150000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:07AC43ED-6529-40BB-B217-E80930942E72 DTSTART;TZID=US/Eastern:20070322T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquium - Exam Week CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070322T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 TRANSP:OPAQUE UID:E5E0F27C-A4B1-44A8-9CFB-DC29C2927CAB DTSTART;TZID=US/Eastern:20080327T153000 DTSTAMP:20070723T154452Z SUMMARY:Spring Break (No Colloquium) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20080327T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:37C597BA-6E93-4CE4-8759-2D7798B4F458 DTSTART;TZID=US/Eastern:20050324T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquium this week (School Holiday) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050324T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:B04BA34D-311C-4590-A6F8-64B824ADE573 DTSTART;TZID=US/Eastern:20060310T140000 DTSTAMP:20070620T140707Z SUMMARY:Jehae Joseph CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060310T151500 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:66AC63FC-416E-4333-A653-507355AF15DC DTSTART;TZID=US/Eastern:20070607T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquium\, last week of classes CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070607T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 TRANSP:OPAQUE UID:C02BA4B1-9E63-4AEA-9144-343E777C1AAB DTSTART;VALUE=DATE:20061009 DTSTAMP:20070620T140707Z SUMMARY:Columbus Day\, School Holiday CREATED:20071202T022832Z DTEND;VALUE=DATE:20061010 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:4DF1586D-9070-4FAD-BB12-5ABBD55EFB44 DTSTART;VALUE=DATE:20070609 DTSTAMP:20070620T140707Z SUMMARY:Last Day of Classes CREATED:20071202T022831Z DTEND;VALUE=DATE:20070610 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium Lecture on \"Kinetic Pathways to Phase Separation\" by Jim Gu nton (Lehigh University)\n\nColloquium Seminar Series\nDepartment of Phy sics\nDrexel University\n\nProf. Jim Gunton\nLehigh University\nDepartme nt of Physics\n\nTIME: Thursday 3:30 pm October 26th 2006\nLOCATION : DI SQUE 919\n\nABSTRACT\n\n\nWhen a system phase separates into two or more phases\, there are typically many possible kinetic pathways . Being ab le to obtain the desired outcome often requires controlling the pathway the system follows. In this talk we will discuss an example of this\, w hich involves the crystallization of proteins from solution. The functi on of proteins is determined by their structure. Protein structure is o btained from X-ray diffraction of high quality crystals\, but it is quit e difficult to grow such crystals. The crucial bottleneck in the growth of high quality crystals from solution is the crystal nucleation proces s. As a consequence scientists have been trying to determine the depend ence of the phase diagram and crystal nucleation rate on the initial con ditions of the solution\, which typically consists of proteins\, water\, salt and buffer. A major difficulty is an inadequate knowledge of the protein-protein interactions\, but progress has been made using simplifi ed models. \n\nIt is also the case that several human diseases are caus ed by undesirable protein condensation. In such cases\, the goal is to understand the underlying kinetics of these phenomena\, in order to slow down or prevent nucleation. The talk will provide an overview of the f ield.\n\n UID:EB3B02F6-C29E-40D1-A829-4DFBC9AE4CC6 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061026T153000 DTSTAMP:20070620T140707Z SUMMARY:Jim Gunton (host Frank Ferrone) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061026T163000 LOCATION:Disque 919 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics\nColloquium on \"Mapping the routes towards a catastrophic syste ms\nfailure : The Biology of Aging\" Prof. Andres Kriete (School of\nBio medical Engineering\, Drexel University)\n\nDREXEL UNIVERSITY\nDepartmen t of Physics\n\nProf. Andres Kriete\nDrexel University\, School of Biome dical Engineering\n\nTIME: Thursday May 18th\, 3:30 pm\nLOCATION : DISQU E 919\n\nABSTRACT\n\nBiological complexities and different experimental approaches have so\nfar prevented a consistent explanation of the biolog ical process of\naging\; rather different opinions or theories of aging coexist. For\nexample\, several genes have been identified to modulate l ifespan\,\nwhile telomere shortening\, free radical damage and impairmen t of key\nsignaling pathways in cells are other areas of research.\n\nIn order to develop a more integrative approach\, we have defined a\nbroad er conceptual framework for aging research. Initially\, we\nconsider evi dence about fractal supply networks\, metabolism\, and\nlifespan providi ng a top-down and constraining view of cellular\nprocesses related to ag ing. Concomitantly\, multi-omics data generation\nbuilds such a framewor k from the bottom-up\, using modeling strategies\nto identify key pathwa ys and their physiological capacity. As aging\nmanifests itself on a sys tems level\, it emerges as an accelerated\nprocess through feedback loop s between networked processes at\ndifferent levels of biological organiz ation. UID:8630F9A8-821C-41A9-8CC5-8826E96B19A2 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060518T153000 DTSTAMP:20070620T140707Z SUMMARY:Dr. Andres Kriete (Biomedical Engineering) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060518T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: Ravi Iyengar (Mount Sinai School of Medicine)\nHost : Avijit Ghosh (avijit@physics.drexel.edu)\n\nTitle: Regulatory Motifs i n Cell Signaling Networks\nLocation: Disque 919\nTime: March 3rd 2005 3: 30 pm\n\nAbstract\nComponents within mammalian cells interact with one a nother to form\ncomplex networks. Often these interactions are induced b y extra-cellular\nsignals as they propagate connectivity through the sys tem. Such\npropagated connectivity results in the appearance of regulat ory motifs\nthat are capable of processing information so that signals c an be\ntransmitted across temporal and spatial domains or terminated in a\nspecified manner depending on the balance of positive and negative\nr egulatory motifs. From these analyses a preliminary view of the\ninform ation processing landscape within the cell may be obtained. The\nimplic ations of this dynamic organization of regulated connectivity will\nbe d iscussed.\n\n\n UID:B52309FD-112C-49E7-9251-804B9804C79C TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050303T153000 DTSTAMP:20070620T140707Z SUMMARY:Ravi Iyengar (Mount Sinai School of Medicine) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050303T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium Lecture on \"Noise-Dependent Pre-Bifurcational Phenomena and Noisy Unmaskers of Multistability in Cardio (Ventricular) Myocytes\" by Elena D. Surovyatkina (Space Research Institute of Russian Academy of Sc ience)\n\nColloquium Seminar Series\nDepartment of Physics\nDrexel Unive rsity\n\nProf. Elena D. Surovyatkina\nSpace Research Institute of Russia n Academy of Science\nMoscow\, Russia\, \n\nTIME: Thursday 3:30 pm Novem ber 2nd 2006\nLOCATION : DISQUE 919\n\nABSTRACT\n\nHeart rate dynamics i s an important field to apply the nonlinear physics of multistable\, for ced and noisy systems. I will discuss two new phenomena - the nonlinear saturation of the pre-bifurcation noise amplification and the rise with subsequent saturation of the pre-bifurcation correlation time. I will al so present the new effect of the multistability of periodic rhythms of c ardio (ventricular) myocyte. \nFirstly\, I will show the method for calc ulation of noise amplification in nonlinear systems near bifurcation poi nt which takes into account nonlinear saturation of fluctuations. The me thod is illustrated by two examples: saturation of noise amplification u nder (i) bifurcations period doubling in nonlinear map and (ii) pitchfor k bifurcations in nonlinear oscillator. Theoretical estimates have prove d to be in good agreement with the result of numerical simulations. I wi ll show that in saturation regime fluctuation variance is proportional t o the square root of external noise variance\, whereas fluctuation varia nce in linear regime is proportional to noise variance.\n\nSecondly\, I will show that another phenomenon of pre-bifurcation rise of the correla tion time accompanies the phenomenon of pre-bifurcation increase in fluc tuation intensity which also experiences saturation in the vicinity of t he bifurcation point. I will demonstrate that correlation time saturates at the level inverse proportional to the noise standard deviation. Qual itative as well as quantitative features of these phenomena are exhibite d using selected models of cardiac dynamics.\n\nThirdly\, I will propose the noise to be considered as an unmasker of multistability of periodic rhythms in cardio (ventricular) myocyte. Simulations using numerical in tegration of an ionic model of a single ventricular cell formulated as a nonlinear system of differential equations revealed the simultaneous pr esence of three or more rhythms. This effect of multistability elucidate s the mechanism of appearances of arrhythmias.\n\nFinally\, I will point out a few implications of my findings to cardiac arrhythmias.\n\n\n UID:E8EC7ACF-BF61-49CA-9ECA-ED21CDF9AB60 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061102T153000 DTSTAMP:20070620T140707Z SUMMARY:Elena Surovyatkina (Host : Teck Lim) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061102T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: Phil Johnson (NIST)\nLocation: Disque 919\nHost: Ro berto Ramos (Physics) roberto.ramos@drexel.edu\nTitle: Quantum Computing with superconducting Qubits and Gates.\n\nAbstract:\n\nMaking a superco nducting quantum computer will require building and controlling complex electrical circuits involving a vast number of Josephson junction-based qubits. This is a truly formidable engineering dream. The first steps in volve creating devices that implement the basic quantum logic gates nece ssary as building blocks for a largescale quantum computer. The fascinat ing quantum physics underlying these devices can be understood with rema rkably simple but powerful models. Using simulations of the controlled q uantum evolution of fewqubit circuits\, I will show how to physically im plement quantum logic\, and I will discuss some of the challenges that m ust be met to achieve large-scale and high-fidelity quantum logic. Wheth er these challenges can be met is unknown\, but in the meantime\, experi ments on prototype qubits are probing the limits of quantum mechanics\, including the fundamental question of whether the macroscopic world is g overned by quantum laws. \n UID:715F76DA-ACB6-474C-9572-68C3AAC8F957 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050217T153000 DTSTAMP:20070620T140707Z SUMMARY:Phil Johnson (NIST) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050217T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Dynamic Disorder in Enzymatic Systems\"\n\n\nDRE XEL UNIVERSITY\nDepartment of Physics\n\nProf. Nily Dan\nDepartment of C hemical and Biological Engineering\n\nTIME: Thursday Oct. 4th 2007\, 3:3 0 - 4:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nSingle-molecule studie s of enzymatic reactions reveal fluctuations in the reaction rate\, whic h cannot be explained by classic Markovian dynamics. This dynamic disord er is attributed to slow transitions in enzyme conformations that take p lace over timescales longer than reaction cycle times.In this work we di scuss a model for reaction kinetics in fluctuating\, single enzyme syste ms and apply it to beta-galactosidase. Specifically\, we focus on the im plications of single-molecule fluctuations for reaction rates in systems such as cells or biosensors that contain a moderate number of molecular copies.\n UID:4BFE6E2B-4DF5-4111-A94A-6A2963438695 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20071108T153000 DTSTAMP:20071023T181758Z SUMMARY:Nily Dan (Drexel University) :: Postponed CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20071108T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium Lecture on \"Warm Dust and Fast Winds: Mid-Infrared Views of Quasar Outflows\" by Dr. Sarah Gallagher \n\nDepartment of Physics\nDre xel University\n\nDr. Sarah Gallagher\nUCLA\n\nTIME: Thursday 3:30 pm No vember 30th 2006\nLOCATION : DISQUE 919\n\nABSTRACT\n\n\nIn the local un iverse\, every large galaxy hosts a central supermassive\nblack hole. T he empirical discovery of strong correlations between\nthese black holes and their host galaxies implies a mechanism for\ntheir coeval growth. A likely suspect for mediating this relationship\nis mass ejection as a consequence of accretion onto the black hole\nwhen it is actively growin g as a quasar. However\, the physical\nproperties of quasar outflows as well as their role in accretion are\npoorly constrained by observations. Broad Absorption Line (BAL)\nquasars\, 20% of the quasar population\, a re clearly generating\nenergetic outflows. This group is thus ideal for investigating the\nrole of mass ejection in black hole growth. I prese nt a mid-infrared\nstudy indicating that the direct detection of outflow s in BAL\nquasars is merely an accident of orientation\, and therefore a ll\nluminous quasars are engines of mass ejection.\n\n UID:FCC6EF93-4B3A-4F39-ACD2-0ADA704C4759 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061130T153000 DTSTAMP:20070620T140707Z SUMMARY:Sarah Gallagher (Host: Gordon Richards) CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20061130T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Host: Guoliang YangThe Department of Physics cordially invit es you to attend a Colloquium\nLecture on \"Quantifying Specificity of B iomolecular Recognition\" by\nProf. Jin Wang Department of Chemistry and Physics SUNY Stony Brook\n\n\nColloquium Seminar Series\nDepartment of Physics\nDREXEL UNIVERSITY\n\nProf. Jin Wang\nDepartment of Chemistry an d Physics\nState University of New York at Stony Brook\n\nHost: Prof. Gu oliang Yang\n\nTIME: Thursday 3:30 pm February 2nd\nLOCATION : DISQUE 91 9\n\nABSTRACT\n\nWe report here the investigation of a novel description of specificity\nin enzyme-ligand binding based on energy landscape theo ry. We define a\nnew term intrinsic specificity ratio (ISR)\, which desc ribes the level\nof discrimination of the minimum energy protein-ligand complex from\nthe weaker binding states of the same ligand. We discuss t he\nrelationship between the intrinsic specificity we defined here and t he\nconventional definition of specificity. In a docking study of 1000\n molecules selected from an NCI database with the enzyme COX-2\, we\ndemo nstrate a direct correlation between ISR value and structural\nmatch wit h a reference COX-2 complex of a selective inhibitor. In\ncontrast\, no correlation is observed between structural match and\naffinity of bindi ng. We further observe that the known selective\ninhibitors of COX-2 al l have high ISR values while nonselective COX\ninhibitors have lower ISR values. We suggest that intrinsic\nspecificity ratio may be a useful n ew criterion and a complement to\naffinity in initial drug screening and in searching for potential drug\nlead compounds.\n~\n~\n~\n~\n~\n~\n~\n ~\n~\n UID:80FB1CF4-69F7-499C-AC08-F978DEFA3AB1 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060202T153000 DTSTAMP:20070620T140707Z SUMMARY:\"Quantifying Specificity of Biomolecular Recognition\" by\nProf . Jin Wang Department of Chemistry and Physics SUNY Stony Brook\n CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060202T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 TRANSP:OPAQUE UID:CDCB2D5C-0F95-40B0-9393-52068547DA01 DTSTART;TZID=US/Eastern:20061012T153000 DTSTAMP:20070620T140707Z SUMMARY:RESERVED CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061012T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:F15BE8FC-97DA-4B24-9C57-E9E6699053B1 DTSTART;TZID=US/Eastern:20060601T153000 DTSTAMP:20070620T140707Z SUMMARY:Reserved CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060601T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics\nColloquium on \"New Measurement of the Electron Magnetic Moment and the Fine Structure Constant\" by Prof. Gerry Gabrielse (Harvard Un iversity)\n\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nDr. Gerry G abrielse\nHarvard University\n\nTIME: Thursday May 10rd\, 3:30 pm\nLOCAT ION : DISQUE 919\n\nABSTRACT\n\nRemarkably\, the famous UW measurement o f the electron magnetic moment has stood since 1987. With QED theory\, t his measurement has determined the accepted value of the fine structure constant. This colloquium is about a new Harvard measurement of these fu ndamental constants. The new measurement has an uncertainty that is abou t six times smaller\, and it shifts the values by 1.7 standard deviation s. The more accurate value of the electron magnetic moment\, together wi th QED theory\, determines the fine structure constant about 10 times mo re accurately than any rival method. One electron suspended in a Penning trap is used for the new measurement\, like in the old measurement. Wha t is different is that the lowest quantum levels of the spin and cyclotr on motion are resolved\, and the cyclotron as well as spin frequencies a re determined using quantum jump spectroscopy. In addition\, a 0.1 K Pen ning trap that is also a cylindrical microwave cavity is used to control the radiation field\, to suppress spontaneous emission by more than a f actor of 100\, to control cavity shifts\, and to eliminate the blackbody photons that otherwise stimulate excitations from the cyclotron ground state. Finally\, great signal-to-noise for one-quantum transitions is\no btained using electronic feedback to realize the first one-particle self -excited oscillator. The new methods may also allow a million times impr oved measurement of the 500 times smaller antiproton magnetic moment.\n\ nNew Measurement of the Electron Magnetic Moment B. Odom\, D. Hanneke\, B. D’Urson and G. Gabrielse\,\nPhys. Rev. Lett. 97\, 030801 (2006).\n\nN ew Determination of the Fine Structure Constant G. Gabrielse\, D. Hannek e\, T. Kinoshita\, M. Nio\, B. Odom\,\nPhys. Rev. Lett. 97\, 030802 (200 6).\n\n\nAIP Physics Story of the Year (Phys. News Update\, 5 Dec. 2006) \n• Science 313\, 448-449 (2006)\n• Nature 442\, 516-517 (2006)\n• Physi cs Today\, 15-17 (August\, 2006)\n• Cern Courier (October 2006)\n• New S cientist 2568\, 40-43 (2006)\n• Physics World (March 2007)\n\n\nPublicat ions related to this work can be downloaded from:\nhttp://hussle.harvard .edu/~gabrielse/resume.html\n UID:1EF54688-51F5-4EA0-B619-6B2AD73D8210 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070510T153000 DTSTAMP:20070620T140707Z SUMMARY:Gerald Gabrielse (Host: Len Finegold) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070510T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:418E2071-52D1-4A22-911B-821B896B2087 DTSTART;TZID=US/Eastern:20060928T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquia\, First week of classes CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060928T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 TRANSP:OPAQUE UID:57BA41D0-D401-4954-AFC3-2E4D59ED6FE8 DTSTART;TZID=US/Eastern:20080313T153000 DTSTAMP:20070723T154322Z SUMMARY:Last Week of Classes (RESERVED) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080313T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:8 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"Nonlinear Time Series Analysis of Stellar Li ght Curves and\nWhat We Have Learned Along the Way\" by Nada Jevtic (Ric hard Stockton College)\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\n Prof. Nada Jevtic\nRichard Stockton College\n\nTIME: Thursday Feb 22th\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nPhase-space nonlinear tim e-series analysis methods were originally developed for the analysis of chaotic data with broadband power spectra. However\, in a nonlinear Univ erse\, many processes result in broadband power spectra. The DB variable white dwarf PG 1351+489 is one such nonlinear system. The use of nonlin ear noise reduction on the light curve of PG 1351+489 is discussed. This method shortens the needed observation time by a factor ~7 and leads to the identification of previously unobserved trends. Work on PG 1351 and the solar magnetic field has also lead to a better understanding of the nature of the broadband component of power spectra and ways to identify the time series in which noise can be lowered using nonlinear methods.\ n UID:7B5719DC-835E-470D-ABC6-EED381BD2F9A TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070222T153000 DTSTAMP:20070620T140707Z SUMMARY:Nada Jevtic (host Robert Gilmore) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070222T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Host: Frank Ferrone UID:79C2F93D-C137-403D-A720-B80ABB2ABBC7 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060302T153000 DTSTAMP:20070620T140707Z SUMMARY:Jim Gunton jdg4 CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060302T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:The Department of Physics cordially invites you to a Ph.D. T hesis Defense by Tony Abi-Salloum on \"Interference between Competing Pa thways in the interaction of Three-Level Atoms and Radiation\"\n\n\nTitl e: INTERFERENCE BETWEEN COMPETING PATHWAYS IN THE INTERACTION OF THREE-L EVEL ATOMS AND RADIATION\nTime: 2pm\, Friday June 2nd\nLocation: Disque 919\n\n\nAbstract:\n\nWhen light interacts with atoms\, it can induce tr ansitions by way of distinct but indistinguishable pathways\, yielding u nexpected and often counter-intuitive results\, for example\, Electromag netically Induced Transparency (EIT). Some of the spectacular consequenc es of this state of affairs involve strongly subluminal and even superlu minal propagation.\n\nIn this dissertation we explore the physical origi n of the transparency induced in absorbing three-level atoms by the simu ltaneous interplay of two coherent beams of light. We complement the tra ditional machinery of theoretical quantum optics with techniques borrowe d from quantum scattering theory\, and offer what we believe is a most c onvincing physical evidence for the existence\, or for the absence\, of quantum interference effects in the interaction of light and three-level atoms.\n\n UID:21B4CC51-A7FB-4E02-BC3E-A153659F8A88 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060602T140000 DTSTAMP:20070620T140707Z SUMMARY:Thesis Defense :: Tony Abi-Salloum CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060602T154500 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:842AC435-084B-4DC5-9B4D-74BE28D3C72F DTSTART;TZID=US/Eastern:20050317T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquium this week (final exams) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050317T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:8921AFDF-AEB0-4DDF-9DFE-CBC9F5167B3F DTSTART;TZID=US/Eastern:20060105T153000 DTSTAMP:20070620T140707Z SUMMARY:Holiday CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060105T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:9FF28860-E8CB-4747-A9EB-F74E72756E16 DTSTART;TZID=US/Eastern:20080110T153000 DTSTAMP:20070723T154007Z SUMMARY:First Week of Classes (No Colloquium) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20080110T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:64576230-35D6-4F61-83BB-64E57527C935 DTSTART;TZID=US/Eastern:20060622T140000 DTSTAMP:20070620T140707Z SUMMARY:Zengui Liu Oral Presentation CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060622T150000 END:VEVENT BEGIN:VEVENT SEQUENCE:2 TRANSP:OPAQUE UID:B34E7A74-5A11-43DC-8E9D-5D669CF90CF5 DTSTART;TZID=US/Eastern:20070528T180000 DTSTAMP:20070620T140707Z SUMMARY:Memorial Day (University Holiday) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070528T190000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 TRANSP:OPAQUE UID:DED1E3CE-3513-45B1-A6BE-E844C118D177 DTSTART;TZID=US/Eastern:20071213T153000 DTSTAMP:20071127T214526Z SUMMARY:Vogeley : Graduate Student Meeting CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20071213T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"The FIRST SURVEY is Gone (from the schedule)\ , but Not Forgotten\" by \nDr. Robert Becker (UC-Davis and IGPP/LLNL)\n\ nDREXEL UNIVERSITY\nDepartment of Physics\n\nRobert Becker Ph.D.\nUC-Dav is\nIGPP/LLNL\n\nTIME: Thursday Feb 8th\, 3:30 pm\nLOCATION : DISQUE 919 \n\nABSTRACT\n\nAfter ten years\, its finally over. With over 800\,000 d istinct\, catalogued sources\, the FIRST survey stands as one of the pre mier archival records of the radio sky. It stands as a complement to the great optical survey SDSS. The FIRST collaboration is now switching gea rs from surveying to mining. I will present some recent results on quasa rs based on combining the FIRST survey with data from other benchmark su rveys such as 2MASS and SDSS. In particular\, I will report on investiga tions into red quasars\, FR2 quasars\, and submJy radio quasars.\n\n UID:F591FA76-DE27-4866-B8B7-99CFC44F6A63 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070208T153000 DTSTAMP:20070620T140707Z SUMMARY:Robert Becker (Host: Gordon Richards) CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20070208T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:8 TRANSP:OPAQUE UID:1591B209-2F3C-4B73-8938-0F7A188EB05E DTSTART;TZID=US/Eastern:20061208T153000 DTSTAMP:20070620T140707Z SUMMARY:Chris Lobb (NIST- UMD) host: Roberto Ramos :: Postponed CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20061208T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 DESCRIPTION:\nKaczmarczik Lecture\n\nSpeaker: William D. Phillips\n\nTit le: \"Time and Einstein in the 21st Century: The coolest stuff in the\n universe\"\n\nAbstract:\nAt the beginning of the 20th century Einstein p ublished three\nrevolutionary ideas that changed forever how we view Nat ure. At the\nbeginning of the 21st century Einstein's thinking is shapi ng one of the\nkey scientific and technological wonders of contemporary life: atomic\nclocks\, the best timekeepers ever made. Such super-accu rate clocks are\nessential to industry\, commerce\, and science\; they a re the heart of the\nGlobal Positioning System (GPS)\, which guides cars \, airplanes\, and\nhikers to their destinations. Today\, atomic clocks are still being\nimproved\, using Einstein's ideas to cool the atoms to incredibly low\ntemperatures. Atomic gases reach temperatures less tha n a billionth of\na degree above Absolute Zero\, without solidifying. S uch atoms enable\nclocks accurate to better than a second in 60 million years as well as\nboth using and testing some of Einstein's strangest pr edictions.\n\nThis will be a lively\, multimedia presentation\, includin g experimental\ndemonstrations and down-to-earth explanations about some of today's most\nexciting science.\n UID:B53FF252-B80D-46A6-AEB4-A65E5676409B TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20080207T153000 DTSTAMP:20071015T014720Z SUMMARY:Kaczmarcik Lecture CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20080207T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:96BDCE87-3DE5-4FB8-B867-79203B4700D5 DTSTART;VALUE=DATE:20080121 DTSTAMP:20070723T154056Z SUMMARY:MLK Day (University Holiday) CREATED:20071202T022832Z DTEND;VALUE=DATE:20080122 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:CBF5FD55-8B77-46AE-9ED0-B0F3EAC30DB0 DTSTART;TZID=US/Eastern:20070405T153000 DTSTAMP:20070620T140707Z SUMMARY:No Colloquium - First Week of Classes CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070405T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nThis weeks colloquium has been postponed to May 26th due t o weather. UID:251B509B-E175-4937-9EC0-E76C69855688 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050224T153000 DTSTAMP:20070620T140707Z SUMMARY:Physics Colloquium Series POSTPONED (Rescheduled for May 26th) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050224T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:The title will be \"Physics is underground\"\n\nAbstract:\n In the 1960's\, when Ray Davis started trying to observe solar neutrinos \nfrom deep in the Homestake mine in South Dakota\, underground physics was a\ncuriosity. Since then\, an increasing number and variety of expe riments\nhave been built which rely on the shielding from cosmic rays th at going\nunderground offers. I will describe some of the more interest ing and\nimportant recent experiments. Will the trend to go underground continue?\nIf so\, should the US take advantage of its impressive parti cle physics\nexperience and infrastructure and invest in a world class u nderground\nlaboratory in the near future? Many of the most important a nd accurate\ntests of the standard model of particle interactions will s oon be carried\nout in underground laboratories around the world. The U S should be at the\nforefront of this effort.\n\n UID:ABE56593-9908-4281-A339-0CA0CBBAD4FD TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060215T130000 DTSTAMP:20070620T140707Z SUMMARY:Wednesday\, February 15th\nSteven Dazeley TALK: 1:00\, Disque 919 CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060215T140000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium\nLecture on \"Hemoglobin: Nitric Oxide Destroyer\, Preserver or Creator?\"\nby Prof. Daniel. B. Kim-Shapiro (Wake Forest University)\ n\nColloquium Seminar Series\nDepartment of Physics\nDREXEL UNIVERSITY\n \nProf. Daniel B. Kim-Shapiro\nDepartment of Physics\nWake Forest Univer sity\n\nTIME: Thursday 3:30 pm November 3rd 2005\nLOCATION : DISQUE 919\ n\nABSTRACT\n\nNitric oxide (NO) is the endothelium-derived relaxing fac tor (EDRF).\nIt is made in endothelial cells lining blood vessels and di ffuses to\nsmooth muscle cells where it leads to muscle relaxation\, ves sel\ndilatation\, and increased blood flow. Hemoglobin\, the oxygen car rying\nmolecule in the blood\, reacts at nearly diffusion limited rates with\nnitric oxide to (in some reactions) form nitrate ands thereby dest roy\nNO activity. The presence of such large amounts of such a potent N O\nscavenger in the blood challenges the idea that NO is indeed the EDRF .\n\nSeveral mechanisms have been proposed to account for how NO activit y\nis preserved by hemoglobin in the blood. Biophysical experiments wil l\nbe described exploring and evaluating these mechanisms. In addition\, \nstudies of how hemoglobin can actually create NO activity by the\nredu ction of the nitrite anion will be presented. These studies will\nbe di scussed in terms of the relation to physiology\, pathophysiology\,\nand disease.\n UID:C31BCBCD-B2D5-424A-A15A-A66554F18797 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20051103T153000 DTSTAMP:20070620T140707Z SUMMARY:The Department of Physics cordially invites you to attend a Coll oquium\nLecture on \"Hemoglobin: Nitric Oxide Destroyer\, Preserver or C reator?\"\nby Prof. Daniel. B. Kim-Shapiro (Wake Forest University)\n CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20051103T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:444D16FB-3AFE-42CB-9912-2BE2CA03A696 DTSTART;TZID=US/Eastern:20080605T153000 DTSTAMP:20070723T154812Z SUMMARY:Reserved CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080605T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 TRANSP:OPAQUE UID:52677A3A-AE26-4DCB-81C8-498476E6A174 DTSTART;TZID=US/Eastern:20071004T153000 DTSTAMP:20070725T174129Z SUMMARY:Nikolay Dokholyan (UNC Chapel Hill) :: Host Frank Ferrone CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20071004T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:D449DBAE-2E97-4153-9D0E-87747246BC2C DTSTART;TZID=US/Eastern:20051229T153000 DTSTAMP:20070620T140707Z SUMMARY:Holiday CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20051229T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Dynamics of Intramolecular Contact Formation in Islet Amyloid Polypeptide\" by Dr. Sara Vaiana\n\n\nDREXEL UNIVERSITY\nD epartment of Physics\n\n\nDr. Sara Vaiana\nLaboratory of Chemical Physic s\nNational Institute of Health\n\nTIME: Thursday November 29th\, 3:30 p m\nLOCATION : DISQUE 919\n\nABSTRACT\n\nMeasuring the dynamical properti es of unfolded chains in solution\, and in particular of amyloid forming peptides\, is of key importance to understand the first elementary step s in folding\, misfolding and aggregation. Protein misfolding and aggreg ation is at the basis of a vast class of diseases (including Alzheimer's and type II Diabetes) called amyloid diseases\, where aggregates of spe cific structure\, called amyloid fibrils\, are formed. In type II Diabet es a peptide called human islet amyloid polypeptide (hIAPP) forms amyloi d fibrils inside the beta-cells of the pancreas (where insulin is produc ed) contributing to beta-cell death and consequent impairment of insulin production.\n\nIn order to understand aggregation it is critical to kno w what the constituents are. As an example I will present a study of IAP P\, where we have directly compared an aggregating variant (hIAPP) to a non-aggregating variant (rIAPP)\, in their monomeric states. Before aggr egating into highly ordered amyloid fibrils the hIAPP monomer is known t o be unstructured. This poses the fundamental question of how to paramet erize an unstructured chain. We do this by measuring the rates of intra- molecular end-to-end contact formation using tryptophan triplet quenchin g by cystine. We find a significant chain collapse in aqueous solvent fo r both peptides\, and the appearance of kinetic traps that slow down cha in dynamics. Interestingly rIAPP shows an increased chain stiffness with respect to hIAPP.\n\n \n UID:85DE52D9-13F3-47D4-AB8C-192329B1D024 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20071129T153000 DTSTAMP:20071127T161034Z SUMMARY:Sara Vaiana (NIH) :: Host Frank Ferrone CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20071129T163000 LOCATION:Disque 909 END:VEVENT BEGIN:VEVENT SEQUENCE:8 DTSTART;TZID=US/Eastern:20071101T153000 DTSTAMP:20071101T155944Z SUMMARY:Frederick Strauch (Gettysburg College) :: Host Roberto Ramos ATTENDEE;CUTYPE=INDIVIDUAL;PARTSTAT=ACCEPTED:mailto:department_of_physic s@physics.drexel.edu DTEND;TZID=US/Eastern:20071101T163000 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"The Perfect Qantum State Transfer with Supercond ucting Phase Qubits \" by Prof. Fred Strauch (Gettysburg College)\n\n\nD REXEL UNIVERSITY\nDepartment of Physics\n\n\nDr. Fred Strauch\nDepartmen t of Physics\nGettysburg College\n\nTIME: Thursday November 1st\, 3:30 p m\nLOCATION : DISQUE 919\n\nABSTRACT\n\n\nIn 1980\, Tony Leggett argued that the validity of quantum mechanics at the macroscopic level can and should be put to experimental test. Verification would finally force us to accept the radical viewpoint that the superposition principle holds o n all scales of size and complexity\; a breakdown of quantum theory woul d be even more radical. He proposed that superconducting devices were on e of the most promising places to look. Today this question has been mer ged with the ambitious goal of building a quantum computer using superco nducting circuits as quantum bits (qubits). In this talk I will discuss these recent advances and a theoretical proposal to use superconducting phase qubits\, fabricated with multiple layers\, to implement perfect qu antum state transfer between nodes of a hypercube network. This example of novel quantum transport has applications for both quantum computing and fundamental tests of quantum mechanics at the macroscopic level.\n\n UID:F37CF128-023D-4130-8ED2-C8D1B0023C3D TRANSP:OPAQUE ORGANIZER;CN="avijit ghosh":mailto:avijit@physics.drexel.edu CREATED:20071202T022832Z END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:AA0F1E44-22BA-49AE-A6D5-F7BB8BDFD226 DTSTART;TZID=US/Eastern:20060330T153000 DTSTAMP:20070620T140707Z SUMMARY:Holiday (Spring Break) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060330T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Colloquium\nLecture on \"Composition and Processing of Circumstellar D isks and\nClues for Planet Formation\" by Dr. Alycia Weinberger\n\n\nCol loquium Seminar Series\nDepartment of Physics\nDREXEL UNIVERSITY\n\nDr. Alycia Weinberger\nDepartment of Terrestrial Magnetism\nCarnegie Institu tion of Washington\n\nTIME: Thursday 3:30 pm January 19th 2006\nLOCATION : DISQUE 919\n\nABSTRACT\n\nUsing high spatial resolution and sensitivi ty of the Hubble Space\nTelescope and 8-10 m ground-based telescopes\, w e may study nearby\ncircumstellar disks in detail. The observations eluc idate disk\ngeometries and dust composition and in an ensemble fashion t each us\nabout the evolution of disks and the timescales for planet form ation\nwithin them. In this talk\, I will show imaging and spectroscopy of\ndisks around stars which are all about 10 Myr old\, yet which vary\n dramatically in physical size\, morphology and composition. Even at\nth is young age\, planets may be modifying their envrionments. At older\na ges\, the signature of terrestrial planet formation have been elusive\,\ nbut I will discuss one remarkable 300 Myr old star.\n UID:0A876B33-2A20-4D1A-9BC6-9142DF9DC170 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060119T153000 DTSTAMP:20070620T140707Z SUMMARY:The Department of Physics cordially invites you to attend a Coll oquium\nLecture on \"Composition and Processing of Circumstellar Disks a nd\nClues for Planet Formation\" by Dr. Alycia Weinberger\n CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060119T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Fault Detection using Scanning SQUID Microscopy\nDr. John Ma tthews\nCenter for Superconductivity Research\, Department of Physics\, University of Maryland\, College Park\n \nThe SQUID (superconducting qua ntum interference device) has been around for several decades now. In on e of its most common incarnations (the dc SQUID) it consists of a superc onducting loop containing two weak links or Josephson junctions. SQUIDs are of interest for their fundamental physics\, since they allow us to p robe into the nature of quantum mechanics\, and for their practical appl ications - the SQUID is the most sensitive detector of magnetic flux to date.\n \nApplications of SQUIDs are extraordinarily varied - many appli cations are medical in nature: magnetoencephalography\, magnetocardiogra phy\, low-field NMR\, detection of hepatic iron\, detection of magnetota ctic bacteria\, just to mention a few. But SQUIDs have found application s in astrophysics\, geological and archaeological surveying\, non-destru ctive evaluation of aircraft wings\, or food and pharmaceutical packagin g. In this talk\, I shall discuss two applications in detail: detecting and locating electrical short circuits in computer chips and chip module s\, and detection of defects in superconducting wire used to build MRI m agnets. UID:5511F980-4975-4CAB-B402-77410079D55A TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060427T153000 DTSTAMP:20070620T140707Z SUMMARY:Dr. John Matthews (Maryland Center of Superconductivity Research ) Host :: Roberto Ramos CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060427T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 DESCRIPTION: Her talk will not take more than an hour and it is schedule d for Tuesday\, 28 November 2006 at 2:00\, Room 919.\n\n\nLaura\n UID:6BA99105-AB97-4BBF-AA68-89B12DAE86EF TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061128T140000 DTSTAMP:20070620T140707Z SUMMARY:Claire King : : Grant Submitting Seminar CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061128T150000 LOCATION:Disque 919 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:6FA030EC-14F0-4625-9601-DF7FD08A0B53 DTSTART;TZID=US/Eastern:20060918T130000 DTSTAMP:20070620T140707Z SUMMARY:Joseph Keel CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060918T140000 END:VEVENT BEGIN:VEVENT SEQUENCE:8 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Colloquium\nLecture on \"The MINOS experiment\" by Mark Dierckxsens (B rookhaven National Laboratory) \n\n\n\nColloquium Seminar Series\nDepart ment of Physics\nDREXEL UNIVERSITY\n\nMark Dierckxsens\n\nBrookhaven Nat ional Laboratory\n\nTIME: Thursday 3:30 pm January 11th\nLOCATION : DISQ UE 919\n\nABSTRACT\n\nMINOS is a long baseline neutrino oscillation expe riment designed to\nmeasure the atmospheric neutrino mass splitting in d etail. Using the\nFermilab Neutrinos at the Main Injector (NuMI) facilit y\, it compares the\nneutrino spectrum measured in the Near Detector at Fermilab with the\nobserved spectrum at the Far Detector\, located at a distance of 735km in\nthe Soudan mine in northern Minnesota. The data ta king using the NuMI beam\nstarted in March 2005 and MINOS recorded close to 1.4e19 protons on target\nuntil the end of February 2006. The perfor mance of the NUMI beam and the\nMINOS detectors during this period and t he ongoing run will be described.\nThe muon neutrino disappearance resul ts from the analysis of the full data\nset of the first year using the l ow energy neutrino beam\, corresponding to\n1.27e20 protons on target\, will also be presented. Finally\, the prospects\nfor the electron neutri no appearance search to limit the 1-3 mixing angle\nwill be described.\n \n UID:1C0FC151-126B-4167-93E4-2BD5D912606C TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070111T153000 DTSTAMP:20070620T140707Z SUMMARY:Mark Dierckxsens (Host : Jelena Maricic) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070111T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Sonya Bahar\n\nCenter for Neurodynamics and Department of Ph ysics & Astronomy\nUniversity of Missouri at St Louis\n\nThe intrinsic o ptical signal (IOS) is a change in light reflectance from\nneural tissue that correlates with the underlying electrophysiological\nactivity. Wit h incident light in the green range\, the IOS reflects changes in\nblood volume\; for incident light in the orange range\, the IOS shows a chang e\nin the oxygenation state of hemoglobin\; for incident red light\, the IOS\nreflects changes in cell volume and/or light scattering.\n\nI will discuss the use of the IOS for imaging the spread of seizures in the\nr at neocortex\, and also for imaging intra-operative stimulation of the h uman\nbrain\, focusing on the pros and cons of the method as a biophysic al imaging\ntechnique\, its potential role in unraveling the nonlinear p henomena which\nunderlie the spatiotemporal spread of seizure activity i n the brain\, and its\nrelation to the so-called \"elusive initial dip\" \, a controversial aspect of\nthe BOLD (blood oxygen level dependent) fM RI signal used in human brain\nimaging.\n\n\n\n\n UID:5CAEC415-7B3D-42CF-A276-234145E282F5 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050623T153000 DTSTAMP:20070620T140707Z SUMMARY:\"Imaging Epileptic Seizures with the Intrinsic Optical Signal\" Sonya Bahar U. Missouri Saint Louis CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050623T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: Padi Boyd (NASA)\nHost: Robert Gilmore (robert.gilm ore@drexel.edu)\n\nTitle: The Swift Gamma Ray Burst Observatory: From Mi ssion Concept to Fully Operational Space Telescope in Six Years\nLocatio n: Disque 919\nTime: March 31st 3:30 pm\n\nAbstract: \n\nGamma-ray burst s (GRBs) are the most powerful explosions\nthe Universe has seen since t he Big Bang. They occur approximately\nonce per day as brief\, but inten se\, flashes of gamma radiation. They\nare distributed randomly on the s ky and last from a few milliseconds\nto a few hundred seconds. We now k now that they are cosmological\,\nlocated more than halfway to the edge of the visible universe\, and\ninvolve the most powerful and relativisti c explosions known. Recently\,\nGRB afterglows have been discovered at X -ray\, optical\, near-IR and\nradio wavelengths. The origin of the explo sions is not well\nunderstood. Theories suggest that GRBs are the signat ures of black\nhole creation and tracers of star formation at early epoc hs. Statistical\nstudies of burst durations imply there are two classes of GRBs\, and\npossibly two distinct progenitor types.\n\nSwift is the f irst of its kind orbiting observatory for multiwavelength\ntransient ast ronomy. It's goal is to determine the origin of\nGRBs and to use bursts to probe the early universe. Swift combines\nwide and narrow field-of-vi ew instruments with prompt response\nto GRBs. A 2-steradian wide-field g amma-ray camera detects bursts\nand localizes them to within 1-2 arcminu tes. The Swift spacecraft\nthen autonomously slews itself in 20-70 secon ds to point the narrow-\nfield X-ray and UV/optical telescopes at the po sition of the GRB and\nperform detailed afterglow observations. Position and flux information\nis sent promptly via communication satellite to c omputers on the ground\n(the Gamma-ray-burst Coordination Network) which perform minimal\nprocessing and distribute news of the burst to the com munity within\nminutes\, allowing ground-based optical through radio tel escopes to\nobserver. Complete data is sent to the ground once per orbit \, processed\nand made available to the community within 2-3 hours of re ceipt.\n\nSwift launched on November 20\, 2004 and currently splits its time\nbetween calibration observations and normal GRB-chasing operations . My talk will\ndescribe the process of designing\, building and running a space science\nmission\, and will include early results from the comm issioning phase of\nthe observatory\, which is still in progress. Swift is already discovering\nGRBs and afterglows\, as well as outbursts of kn own sources. I will give a brief\noverview of these observations as emba rgoes permit.\n UID:AEB8A38E-CB0A-4590-A1A1-46573E7C89CA TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050331T153000 DTSTAMP:20070620T140707Z SUMMARY:Padi Boyd (NASA) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050331T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium Lecture on \"Perturbing\, Modeling\, Imaging\, and Evolving C ell Signaling Circuits in Bacteria\" by Mark Goulian (University of Penn sylvania)\n\nColloquium Seminar Series\nDepartment of Physics\nDrexel Un iversity\n\nProf. Mark Goulian\nUniversity of Pennsylvania\nDepartment o f Physics\n\nTIME: Thursday 3:30 pm October 19th 2006\nLOCATION : DISQUE 919\n\nABSTRACT\n\nAll cells sense and respond to physical and chemical cues in their environment. They do this through elaborate networks of interacting molecules that detect\, interpret\, and carry out responses to specific input signals. Although many of these biochemical circuits have analogs in electronics and other control systems familiar from phys ics and engineering\, there is\, as yet\, no circuit science for cell si gnaling. My lab has been studying a particularly simple and well-charac terized class of circuits in bacteria in order to understand the princip les underlying their design. I will describe our results for several of these systems\, with an emphasis on those aspects that are likely to be broadly applicable to biochemical circuits in general. I will also bri efly describe some of our more recent work in which we have re-engineere d circuits to change their input signals and internal topology.\n UID:BBDAF84A-9162-47EC-9EB1-DD8B1868F036 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061019T153000 DTSTAMP:20070620T140707Z SUMMARY:Mark Goulian (host Jian-Min Yuan) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061019T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:10611E03-2964-42A0-8163-1A135511A4B5 DTSTART;TZID=US/Eastern:20060223T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060223T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:E04EF8EE-80E6-40C2-9E8F-9414F58E331A DTSTART;TZID=US/Eastern:20060928T153000 DTSTAMP:20070620T140707Z SUMMARY:Faculty Meeting CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060928T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nPh.D. Thesis Defense\nDepartment of Physics\nDREXEL UNIVER SITY\n\nHuiling Chen\nDepartment of Physics\nDrexel University\n\n\nTIME : Thursday 10:00 am May 20th\nLOCATION : DISQUE 919\n\nTITLE: Prediction of Protein Structures and Protein-Protein Interactions: A Bioinformatic s Approach\n\n\nPrediction of protein structures from sequences and prot ein-protein\ninteraction from structures are two grand challenges for co mputational\nbiologists in the genomic era. Both remain unsolved problem s despite\nconsiderable effort. Thus\, simplification of the problems\,\ ni.e. prediction of solvent accessibility (exposed or buried) and\nprote in-protein interface residues can be useful as a first step and\nvaluabl e tools in aiding the structural modeling processes. We\ndeveloped a met amethod for solvent accessibility prediction based on\nan ensemble avera ge of five refined individual methods\, leading to a\ntwo-state classifi cation accuracy of 80%. Our results are\n0.7-6.7%better than current sta te-of-art methods. We applied these\nmethods for predicting sites of del eterious mutations and 80% accuracy\nwas achieved\, suggesting that the methods for prediction of solvent\naccessibility can be the basis for ac curate predictions of deleterious\nmutations. We also developed a robust program\, cons-PPISP\, for\npredicting interface residues in protein-pr otein complexes. The method\npromises to complement experimental techniq ues in characterizing\nprotein-protein interfaces. Incorporation of cons -PPISP predictions in\na docking program in the latest CAPRI rounds demo nstrated its ability\nin guiding the docking process. UID:55F3B962-C3F5-42A8-99F4-2E50FE6C243F TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050520T100000 DTSTAMP:20070620T140707Z SUMMARY:Ph.D. Thesis Defense Huiling Chen \"Prediction of Protein Struc tures and Protein-Protein\nInteractions: A Bioinformatics Approach\" CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050520T110000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:FB6453B1-00E2-47E6-8297-A2F6FDE0F0AF DTSTART;TZID=US/Eastern:20051013T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20051013T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:81565C81-CCF7-433E-A396-78A80C4D620C DTSTART;TZID=US/Eastern:20060406T153000 DTSTAMP:20070620T140707Z SUMMARY:First Week of Classes (No Colloquium) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060406T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:A92DFFD6-F8D8-4656-9FFB-A13EF3CD3974 DTSTART;TZID=US/Eastern:20080403T153000 DTSTAMP:20070723T154458Z SUMMARY:First Week of Classes (No Colloquium) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20080403T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:17C1DA4B-1102-417A-A689-33E8E78DC1E5 DTSTART;TZID=US/Eastern:20051006T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20051006T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:63A6ABCE-7017-48BB-B516-5C14FEB79147 DTSTART;TZID=US/Eastern:20080529T153000 DTSTAMP:20070723T154831Z SUMMARY:Reserved CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080529T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"Colliding 5nm Electron Positron Beams at the International Linear\nCollider\" by Prof. William Morse (Brookhaven Nati onal Lab)\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nProf. William Morse\nBrookhaven National Lab\nDepartment of Physics\n\nTIME: Thursday April 19th\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nIn order to achieve the physics goals of the International Linear\nCollider\, two in tense beams with heights of only 5nm will be collided.\nThis presents un ique challenges. After discussing the physics goals of\nthe Internationa l Linear Collider\, the detector systems which will\nprovide the luminos ity feed-back are described UID:90CE68B7-897A-4859-A787-442C5BE58E76 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070419T153000 DTSTAMP:20070620T140707Z SUMMARY:William Morse (host Jelena Maricic) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070419T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:BB18076D-730E-476C-BCF8-36CEEF8CC470 DTSTART;TZID=US/Eastern:20060302T130000 DTSTAMP:20070620T140707Z SUMMARY:Thursday\, March 2nd\nDavid Reyna\nTALK: 1:00\, TBA CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060302T140000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:011A8CB9-AEF3-44B7-8D63-0CD8CA2E3A1B DTSTART;VALUE=DATE:20070616 DTSTAMP:20070620T140707Z SUMMARY:Commencement CREATED:20071202T022831Z DTEND;VALUE=DATE:20070617 END:VEVENT BEGIN:VEVENT SEQUENCE:7 TRANSP:OPAQUE UID:1CD4F53F-273B-48C3-8428-9D096B637CB7 DTSTART;TZID=US/Eastern:20080221T153000 DTSTAMP:20071015T015147Z SUMMARY:Heather Ray ( University of Florida):: Host Frank Ferrone CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080221T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:CF104B7A-2CCA-4654-A38D-A96B5A7AEEE9 DTSTART;VALUE=DATE:20080526 DTSTAMP:20070723T154722Z SUMMARY:Memorial Day (University Holiday) CREATED:20071202T022832Z DTEND;VALUE=DATE:20080527 END:VEVENT BEGIN:VEVENT SEQUENCE:5 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium\nLecture on \"The Latest News in Banananess -- Recent work in Gravitational Lensing and Flexion\" by Prof. Dave Goldberg (Drexel Univ ersity)\n\nColloquium Seminar Series\nDepartment of Physics\nDrexel Univ ersity\n\nProf. David Goldberg\nDrexel University\nDepartment of Physics \n\nTIME: Thursday 3:30 pm October 5th 2006\nLOCATION : DISQUE 919\n\nAB STRACT\n\nIn recent years\, gravitational lensing of distant quasars\, g alaxies\, and clusters of galaxies has provided a wealth of information about cosmic distances\, structure in the universe\, how galaxies form\, and have even provided compelling evidence for the existence of Dark Ma tter. I will give an overview of how gravitational lensing works and wh at sort of visible effects it produces. I will discuss my own recent work on gravitational \"flexion\" -- the bending distortions caused by s mall scale perturbations in cosmic structure. In particular\, I will sh ow some recent work done with Drexel students on measuring the Flexion i n the rich galaxy cluster A1689.\n\n UID:8FA3E1AA-4DAD-420E-9263-32F9A93D8253 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061005T153000 DTSTAMP:20070620T140707Z SUMMARY:Dave Goldberg (Drexel University) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061005T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Ph.D. Thesis\nDefense on \"Study of Electrostatic Effects on Protein F olding\nand Binding Stabilities\" by Feng Dong\n\n\n\nPh.D. Thesis Defen se\nDepartment of Physics\nDREXEL UNIVERSITY\n\nFeng Dong\nDepartment of Physics\nDrexel University\n\n\nTIME: Thursday 1:00 pm May 20th\nLOCATI ON : DISQUE 919\n\nABSTRACT\n\nElectrostatic interactions play important roles in the stability of\nproteins\, yet quantitative understanding of these roles has proven\nelusive due to a number of factors such as the strength and long-range\nnature of these interactions\, strong mediation by solvent\, and\ninterference of non-electrostatic effects. In a numbe r of theoretical\nstudies based on continuum electrostatics\, the view a ppears to have\nemerged that overall electrostatic interactions destabil ize or\nmarginally stabilize proteins and protein complexes. The main ar gument\nis that the desolvation cost for bringing two charges together u pon\nprotein folding or complex formation is so large that it may more t han\noffset the energetic contribution of the charge-charge interaction. We\nnoted that the desolvation cost calculated by continuum electrostat ics\nis very sensitive to the definition of the boundary between the hig h\nsolvent dielectric and the low protein dielectric. Here we studied th e\neffect of charge mutations on protein folding or protein-protein\nbin ding stability by solving PB equation using different dielectric\nbounda ry. We found\, in general\, the calculation using van der Waals\nsurface gave better agreement with experimental data than SE\nsurface. And\, th e dominant contribution of the charged residues to\nprotein folding or b inding stability is electrostatic.\n UID:F308D0C0-BCD5-4E75-8C9E-5D9041E60368 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050520T130000 DTSTAMP:20070620T140707Z SUMMARY:Ph.D. Thesis Defense Department of Physics by Feng Dong \"Study of Electrostatic Effects on Protein Folding\nand Binding Stabilities\" CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050520T140000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:11FAE780-E4B1-4B89-BF80-A0EBCA39CBAC DTSTART;TZID=US/Eastern:20060316T153000 DTSTAMP:20070620T140707Z SUMMARY:Last Week of Classes (No Colloquium) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060316T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\n\"Physics Songs for Fun and Teaching\"\n\nHost : Dick Stei nberg\n\nAbstract: Physicists (including Nobel prize winners) and physic s students have\nbeen singing for fun at social gatherings since at leas t the early 1900s. I\nhave found short songs to be remarkably effective additions to all levels of\nundergraduate courses\, for reasons beyond t he obvious use as a memory aid. In\nthis presentation\, I will perform s ome of the historic songs that have been\nenjoyed at physics parties and picnics in decades past\, describe why physics\nsongs work so well in t he undergraduate classroom\, and sing a number of songs\nthat I have wri tten for all levels of the curriculum.\n\n\n\n UID:ED594FC5-C4AD-4322-9514-EE33D218CBC8 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060209T153000 DTSTAMP:20070620T140707Z SUMMARY:Walter Smith University of Haverford \"Physics Songs for Fun an d Teaching\"\n CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060209T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:8 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Star Formation in High Redshift Galaxies\" by Dr . Bruce Elmegreen\n\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nDr. Bruce Elmegreen\nIBM Watson Research Center\nYorktown Heights\n\nTIME: Thursday October 25th\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nTh e Hubble Space Telescope for optical and near-infrared light and the\nSp itzer Space Telescope for the infrared have opened up a view of star\nfo rmation in young galaxies that has never been possible before. Because\n the most distant galaxies are viewed as they were when light left them\n long ago\, we can see the various steps of galaxy formation throughout\n time. Our work in the last three years has concentrated on the nature of \nstar formation in these galaxies\, many of which are quite peculiar by the\nstandards of our own neighborhood. The dominant peculiarity is the \npresence of enormous young clusters and star complexes in the disk\nsy stems. These complexes are 1000 times more massive than any star forming \nregions in galaxies today\, and yet they appear to form by standard\np rocesses\, which begin with a localized collapse of disk gas. The galaxy \ndisks are also smaller and thicker than today's spiral galaxies\, and many\nhave less than 1/10 the mass of the Milky Way. This combination of small\ngalaxies and big star complexes makes the youngest disks look ve ry patchy\,\nyet\, remarkably\, the average positions of these patches\, if they were to\nbe smoothed out in each disk\, has the same radial den sity profile as that\nobserved in the more normal spiral galaxies that a re also in deep fields.\nThe thicknesses of the star complexes are also about equal to the galaxy\nthicknesses. Thus it appears that spiral gala xy disks form by the\ndispersal and dissolution of giant star complexes\ , which form by\ngravitational instabilities in thick and turbulent gas layers. This\nprocess seems to accompany the growth of galaxy disks over cosmic time\,\nindicating that the growth occurs primarily by the accre tion of gas for\nsystems that end up as spirals. Clumpy disk star format ion also precedes\nthe formation of spirals and ellipticals\, going back to the bandshifting\nlimit of the ACS camera on HST\, which is z~5. Thu s most star formation in\nthe Universe begins in disk systems\, and from these\, all of today's Hubble\ntypes eventually form.\n UID:0315F378-E0F0-4EF2-8C3E-F734C8EDD613 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20071025T153000 DTSTAMP:20071024T135059Z SUMMARY:Bruce Elmegreen (IBM Watson Research Center) :: Host Enrico Vesp erini CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20071025T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:F0DED9EE-02E6-4BB7-83E4-6F7470ECFC35 DTSTART;VALUE=DATE:20070219 DTSTAMP:20070620T140707Z SUMMARY:Last Day to File Application for Degree (Spring Candidates) CREATED:20071202T022832Z DTEND;VALUE=DATE:20070220 END:VEVENT BEGIN:VEVENT SEQUENCE:4 DESCRIPTION:The Department of Physics cordially invites you to attend a\ nPh.D. Thesis Defense on \"Gravitoelectromagnetism (GEM): A Vector\nForm ulation and Group Theoretical Approach.\" by Jairzinho Ramos\n(Advisor: Prof. Robert Gilmore)\n\nPh.D. Thesis Defense\nDepartment of Physics\nDR EXEL UNIVERSITY\n\nMr. Jairzinho Ramos\nDepartment of Physics\nDrexel Un iversity\nAdvisor: Prof. Robert Gilmore\n\nTIME: Friday 2:00 pm August 1 1 2006\nLOCATION : DISQUE 12-919\n\nABSTRACT\n\nWe derive the field equa tions of Gravitoelectromagnetism (GEM) by\nusing a vector formulation ba sed on the weak field approximation of\nEinstein's General Relativity th eory and a new tensor formulation\nbased on group theory and the spin of the graviton. Both formulations\nare in free space and space with sour ces. The analogy between the\ndescription of gravity and electromagnetis m is shown in these field\nequations. The gravitational field is decomp osed into two fields:\ngravitoelectric and gravitomagnetic fields\, whic h satisfy the\nMaxwell-like field equations of GEM. In addition we obtai n the wave\nequation of GEM by using the differential operators divergen ce\, curl\nand gradient in terms of Clebsch-Gordan coefficients. A gener al wave\nequation for an irreducible tensor of rank j is also derived.\n UID:02C957FB-FA3F-43C5-811B-CF90A6632BB6 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060811T140000 DTSTAMP:20070620T140707Z SUMMARY:Ph.D. Thesis Defense :: Jairzinho Ramos CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060811T150000 END:VEVENT BEGIN:VEVENT SEQUENCE:1 TRANSP:OPAQUE UID:43B77AFA-4DA2-4668-977F-014FBC71531E DTSTART;TZID=US/Eastern:20060511T153000 DTSTAMP:20070620T140707Z SUMMARY:RESERVED :: For Job talks CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060511T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:7FD5422B-37D0-437E-BBA7-0D5D7DA818C8 DTSTART;TZID=US/Eastern:20050520T100000 DTSTAMP:20070620T140707Z SUMMARY:Huiling Chen Thesis Defense CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050520T110000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:E40213BE-FE59-4CAF-BFE1-102C104CE271 DTSTART;TZID=US/Eastern:20060622T090000 DTSTAMP:20070620T140707Z SUMMARY:Lin Li Oral Examination CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060622T100000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\n\nCOLLOQUIUM\nDepartment of Physics\nDREXEL UNIVERSITY\n\n Speaker: Prof. Fred House (Drexel University\, Dept of Physics)\n\nTitle : Gradient Wind Analysis of Hurricane Jeanne\n\nDate: Thursday April 21t h 2005\nLocation: Disque 919\nTIME: 3:30 pm\n\nAbstract\n\nThis study de fines hurricane Jeanne within the framework of a\nLagrangian coordinate system where the EYE of the hurricane is the\ncenter\, and the distance to any point of observation defines the\npressure and wind fields. Such an approach matches the conditions of\nthe Gradient Wind equation which is a balance of pressure gradient and\nCoriolis forces\, and the centri petal acceleration according to\nNewton’s Law II. Surface pressure obse rvations are used to define the\npressure gradient in order to estimate the gradient wind field in the\nfree atmosphere. Observations of wind s peed confirm the gradient wind\ncalculations.\n\nThe classic works of Ek man (1902) and Akerblom (1908) provide a\nmathematical description of th e wind distribution in the planetary\nboundary layer within which the ea rth's surface has an appreciable\neffect on air motion. Surface frictio n and eddy viscosity slow the\nwind speed causing a cross isobar flow to ward low pressure at the eye.\nThe average angle of turning was determin ed to be 35o for hurricane\nJeanne. Given this angle\, the gradient win d speeds are scaled to the\nsurface according to the theory of the Ekman Spiral. The resulting\nwind speeds are in good agreement with observat ions.\n\nThe presentation also includes:\n\nDoppler radar and surface we ather film loops\;\nCandid pictures of hurricane damage\;\nStorm chaser video of hurricane Jeanne during landfall.\n\n\n UID:380E6888-6ECE-4797-A8E3-919532EDB951 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050421T153000 DTSTAMP:20070620T140707Z SUMMARY:Fredrick House (Drexel University\, Physics) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050421T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\n\"Probing the Earth's Interior with Neutrinos and Other Ne utrino\nApplications\"\n\n Abstract\n\n Th e Earth's composition\, dynamics and formation are not well\nunderstood and a variety of viable models can fit the existing data.\nCurrent\ngeo chemical models rely on data obtained from surface (or near\nsurface) ro ck samples and\nmeteorite data\, while geophysical features are reconstr ucted from seismic\nmeasurements\, heat flow and geomagnetic field measu rements.\nThus geology is in dire need for independent measurements\ntha t can test models. Uranium and\nthorium inside the Earth are present in trace but uncertain quantities.\nBut measuring their amount and distribu tion inside the Earth can\nsignificantly constrain geophysical models.\n In my talk\, I will present the results of measurement with the\ nKamLAND detector\nof geological antineutrinos coming from the decay cha ins of uranium and\nthorium\, and initial limits in the search for a hyp othetical deep-core\nnatural fission reactor. However\, KamLAND's capab ilities to perform\na precise measurement of terrestrial antineutrinos a re quite limited due\nto the large background antineutrino flux coming f rom man-made nuclear\nreactors surrounding KamLAND in Japan. Improved\nm easurement\n requires an antineutrino detector located far away from ma n-made nuclear\nreactors. One of the best such locations is in Hawaii.\n I will show a progress report on the design studies for the new large de ep-sea\nantineutrino detector Hanohano (Hawaiian Antineutrino\nObservato ry)\, whose goal is to\nperform a precise measurement of geological anti neutrinos coming from the\nmantle and to refine the geo-reactor search. Finally\, Hanohano presents a\ntest-bench and an ideal background measur ement for the calculations related\nto the remote monitoring of nuclear reactors with anti-neutrinos. Of\ncourse\, such a detector\, many times the size of any other instrument will\nprovide unique physics opportunit ies as well.\n\n UID:0DDCE9A2-9B36-4B9A-BF8F-8AC53DC55B38 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060216T153000 DTSTAMP:20070620T140707Z SUMMARY:Jelena Maricic University of Hawaii \"Probing the Earth's Interi or with Neutrinos and Other Neutrino Applications\" CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060216T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:11 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"The title is AFM and Single Molecule Fluoresc ence Studies Reveal the Mechanism of Mismatch Recognition\" by Prof. Dor othy Erie (UNC)\n\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\nProf. D orothy Erie\nUniversity of North Carolina at Chapel Hill\nDepartment of Chemistry\n\nTIME: Thursday March 15th\, 3:30 pm\nLOCATION : DISQUE 919\ n\nABSTRACT\n\nDNA mismatch repair is central to the maintenance of geno mic stability. It is initiated by the recognition of base-base mismatche s and insertion/deletion loops by MutS homologs. Subsequently\, ATP indu ces a unique conformational change in the MutS-mismatch complex\, but no t the MutS-homoduplex complex\, that sets off the cascade of events that lead to repair. To gain insight into the mechanism by which MutS locate s mismatches among the vast excess of correctly paired DNA and then sign als repair\, we are using a combination of AFM and single-molecule FRET (smFRET) to examine the structure and dynamics of MutS-DNA complexes at mismatches and at homoduplex sites. To examine the role of the amino aci ds that make specific interactions with the mismatched bases in these st eps\, we investigated mutants in the Phe-X-Glu mismatch recognition moti f of Taq MutS: MutS-F39A and MutS-E41A. Using AFM\, we can determine the binding affinities and binding specificities as well as the distributio n of conformations of the complexes. Using smFRET\, we can monitor the d ynamics of MutS-induced DNA bending in real-time. Data from these studie s demonstrate that wtMutS-DNA complexes exhibit a single population of c onformations\, in which the DNA is bent\, at homoduplex sites\, but two populations of conformations\, bent and unbent\, at mismatch sites. Inte restingly\, the smFRET data reveal that although the different conformat ional states can interconvert\, many of the states are very long-lived ( >45s). Data from these studies taken together with published genetic dat a suggest that the unbent conformation is a required precursor to the AT P-induced activation of repair and provide detailed picture of how MutS searches for and recognizes a mismatch and subsequently signals repair. UID:DFD2D427-AA42-41A1-AEF0-C43DE05EDC1D TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070315T153000 DTSTAMP:20070620T140707Z SUMMARY:Dorothy Erie (Host Guoliang Yang) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070315T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: Richard Berg (UMD)\nHost: Len Finegold (Physics) l@ drexel.edu\n\nTitle: The Physics IQ Test.\nLocation: Disque 919\nTime: A pril 14th 3:30 pm\nAbstract: \n\nThe assembled throngs vote on the outco me of physics \"brainteaser\" type questions\, which are then answered b y performing a demonstration experiment.\n\n UID:B9036F99-2ACD-4B84-9EA7-13D46DDD4699 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050414T153000 DTSTAMP:20070620T140707Z SUMMARY:Richard Berg (UMD) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050414T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics\nColloquium on \"Model-based drug development at the example of the ErbB pathway\" by Prof. Birgit Schoeberl (Merrimack Pharmaceuticals) \n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nDr. Birgit Schoeberl\n Merrimack Pharmaceuticals\, MA\, USA\n\nTIME: Thursday May 3rd\, 3:30 pm \nLOCATION : DISQUE 919\n\nABSTRACT\n\nComputational biology is starting to impact drug design and has the\npotential to revolutionize the drug development process. Here we\ndescribe how data-driven computational mod els can impact the design of\ntargeted therapeutics for improved safety and efficacy\, and we suggest\nhow\, in the future\, the same approach m ay help identify responders in\nthe clinic.\n UID:6EE95082-3D22-40DB-8F22-FD8AB268FD0F TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070503T153000 DTSTAMP:20070620T140707Z SUMMARY:Birgit Schoeberl (host Avijit Ghosh) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070503T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:7 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Protein Interactions: Structure\, Energetics\, a nd Kinetics\" by Prof. Huan-Xiang Zhou\n\n\nDREXEL UNIVERSITY\nDepartmen t of Physics\n\n\nDr. Huan-Xiang Zhou\nDepartment of Physics and Institu te of Molecular Biophysics and School of Computational Science\nFlorida State University\n\nTIME: Thursday May 31rd\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\n\nIt is increasingly recognized that most proteins f unction in the context of multi-component complexes. In this talk I wil l present our work on structural models for protein complexes\, energeti c contributions to protein binding stability\, and rates of protein asso ciation. Structural models are built by combining three approaches. Firs t\, residues that likely form interfaces in protein complexes are predic ted\; the predictions are then used to either guide docking of proteins or score docked structures\; candidate structures are finally refined by lengthy molecular dynamics simulations. A focus of ourstudy of protein binding stability is electrostatic contributions. Efforts have been devo ted to refine protocols for Poisson-Boltzmann calculations against exper imental data.  Protein association rates are calculated from a theoretic al formula that predicts the diffusion-limited rate for reaching the tra nsient complex\, which lies at the outer boundary of the bound state.  T he association of the k-PVIIA toxin to the Shaker potassium channel prov ides an illustration for the various methods.\n UID:4306D301-04A0-4C53-A1F9-8A2BC5815018 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070531T153000 DTSTAMP:20070620T140707Z SUMMARY:Huan Xiang Zhou (Guest Frank Ferrone) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070531T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:1 DESCRIPTION:Host: Avijit Ghosh UID:BBA042A6-1CE8-4161-A8D6-1367544C8D53 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20051201T153000 DTSTAMP:20070620T140707Z SUMMARY:Stanislav Shvartsman Princeton University \"Pattern formation in epithelial layers\" CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20051201T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:FB3E93A7-C8ED-42CD-B197-2FA3957C4E66 DTSTART;TZID=US/Eastern:20070201T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20070201T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION: No Physics Colloquium Today UID:ED8B749F-C23D-493F-A9AB-F720C3F8C91F TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050210T153000 DTSTAMP:20070620T140707Z SUMMARY:Physics Colloquium Cancelled CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050210T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:11 TRANSP:OPAQUE UID:AC5D8F13-EB80-44C6-B0F2-3A21ACF23223 DTSTART;TZID=US/Eastern:20070308T153000 DTSTAMP:20070620T140707Z SUMMARY:Kaczmarczik Lecture CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070308T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:5ED11A77-D85D-4C8E-8BFB-7044FAF2400F DTSTART;TZID=US/Eastern:20071120T143000 DTSTAMP:20071118T215120Z SUMMARY:Emma Starbucks 34th and chestnut CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20071120T153000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:0F3CC0D6-8F81-4DAA-B8F1-CC611485535E DTSTART;TZID=US/Eastern:20050520T130000 DTSTAMP:20070620T140707Z SUMMARY:Feng Dong thesis defense Event CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050520T140000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Spin Transfer Matrices\n UID:651E3394-5043-4320-A60F-0ED25F062D11 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050601T151500 DTSTAMP:20070620T140707Z SUMMARY:Thesis Defense Randall Traska CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050601T161500 END:VEVENT BEGIN:VEVENT SEQUENCE:13 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Low-Temperature Plasma Physics: Fundamentals and Applications\" by Prof. Alex Fridman\n\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nDr. Alex Fridman\nJohn A.Nyheim Chair Professor of Mech anical Engineering\nDirector of the Drexel Plasma Institute\n\nTIME: Thu rsday May 17rd\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\n\nLow-tem perature plasma is a rapidly expanding multidisciplinary area of science and technology. Fundamentals of the low-temperature plasma are mostly f ocused on physics of ionized gases\, physics of gas discharges\, and phy sical kinetics of quite sophisticated plasma chemical processes. Applica tions of low-temperature plasma are widely spread today between electron ics and biology\, energy problems and medicine. The presentation will di scuss plasma fundamentals and applications\, which are in the research f ocus of the Drexel Plasma Institute\, one of the world strongest plasma engineering centers. Specific attention will be paid to physics of stron gly non-equilibrium atmospheric pressure plasma\, and its applications t o electronics\, hydrogen generation\, biology and medicine.\n UID:FC3DAC72-10A1-401E-8DED-DDA35FC49B9A TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070517T153000 DTSTAMP:20070723T155909Z SUMMARY:Alex Fridman (host Frank Ferrone) CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20070517T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:435C769A-338A-4C17-AFBE-F3289B61839D DTSTART;TZID=US/Eastern:20060615T153000 DTSTAMP:20070620T140707Z SUMMARY:Finals Week (Reserved) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060615T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:0E2986BC-FEED-4076-A450-14C879818FEC DTSTART;TZID=US/Eastern:20080228T153000 DTSTAMP:20071015T015153Z SUMMARY:Shari Moskow (Drexel University\, Mathematics) :: Host Frank Fer rone CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080228T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:4 TRANSP:OPAQUE UID:6A6E92E8-35EA-40F4-9DFF-DADC961016DF DTSTART;TZID=US/Eastern:20070118T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20070118T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:15383BB4-ABCD-4CC5-A9F8-2B8F19CA0839 DTSTART;TZID=US/Eastern:20051208T153000 DTSTAMP:20070620T140707Z SUMMARY:Last week of Classes (No Colloquium) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20051208T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:2 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"Dynamic Disorder in Enzymatic Systems\"\n\n\nDRE XEL UNIVERSITY\nDepartment of Physics\n\nProf. Nily Dan\nDepartment of C hemical and Biological Engineering\n\nTIME: Thursday December 6thth 2007 \, 3:30 - 4:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nSingle-molecule studies of enzymatic reactions reveal fluctuations in the reaction rate\ , which cannot be explained by classic Markovian dynamics. This dynamic disorder is attributed to slow transitions in enzyme conformations that take place over timescales longer than reaction cycle times.In this work we discuss a model for reaction kinetics in fluctuating\, single enzyme systems and apply it to beta-galactosidase. Specifically\, we focus on the implications of single-molecule fluctuations for reaction rates in s ystems such as cells or biosensors that contain a moderate number of mol ecular copies.\n UID:AAEE7D70-63DD-4E0B-AC76-DDFB16183F47 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20071206T153000 DTSTAMP:20071204T141921Z SUMMARY:Nily Dan (Drexel University) :: Host Jian-Min Yuan CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20071206T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:5 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"Quantum Networks and Ion Trap Quantum Compute rs\" by Prof. Chris Monroe (U. Michigan)\n\nDREXEL UNIVERSITY\nDepartmen t of Physics\n\n\nProf. Chris. Monroe\nUniversity of Michigan\nDepartmen t of Physics\nFOCUS Physics Frontier Center\n\nTIME: Thursday March 7st\ , 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\n A quantum computer can process entangled quantum superpositions of information\, providing expo nential gains over conventional computers when applied to certain tasks. Trapped atomic ions are among the most promising candidates for a futu re quantum information processor\, with each ion storing a single quantu m bit (qubit) of information. Small numbers of trapped ion qubits can b e entangled through a suitable interaction with optical fields. The next generation experiments will transport and distribute trapped ion qubits to generate truly large-scale entangled quantum states. I will discuss several options for this quantum networking\, along with state-of-the-a rt experimental progress. This includes the use of phonons between ions in a Coulomb crystal\, the physical shuttling of ions throughout comple x and microfabricated ion trap structures\, and the coupling of remotely -located ions through a photonic coupling. UID:E2D96783-669F-45EC-B695-BE564E28074C TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070307T153000 DTSTAMP:20070620T140707Z SUMMARY:Christopher Monroe (Host: Robert Gilmore) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070307T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:10 DESCRIPTION:To all and everyone:\n\n2007 Holiday Dinner\n\nBehrakis\, Gr and Hall.\n7:00pm\nThursday\, December 6th\, 2007\n\nGreat food\, great atmosphere\, great fun.\n\nBring your Family and Friends.\n\nAll welcome .\n\nRSVP by Tuesday\, November 27th\, 2007 @ 5:00PM\n\n UID:3746A57F-911D-4E88-8DE4-6E9649C374AC TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20071206T180000 DTSTAMP:20071128T013627Z SUMMARY:Department of Physics Annual Holiday Party CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20071206T200000 LOCATION:Behrakis Grand Hall END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Friday\, February 10\n3:30 p.m.\nDisque 919\n\nDr. Marianne Vestergaard\nUniversity of Arizona\n\nTitle:\nFirst Steps Toward Constra ining Supermassive Black-Hole Growth:\nMass Estimates of Black Holes in Distant Quasars.\n\nAbstract:\nSupermassive black holes most likely resi de ubiquitously in the\ncenters of quiescent and active galaxies and may impact the\nevolution of their host galaxies. A fundamental property o f a\nblack hole is its mass. Statistical studies of large samples\nof s upermassive black holes and their masses promise insights\non how black holes grow and affect their environment\, which\ncomprise an important s tep toward our understanding of structure\nformation and evolution in th e Universe. Of particular interest\nis whether or not black-hole growth properties such as growth\nrate and process (e.g.\, mergers\, accretion\ , or both) change with\nredshift. Measuring black-hole masses of nearby quiescent\ngalaxies is a non-trivial task and proves increasingly diffic ult\n(or becomes impossible) for more distant galaxies. Fortunately\,\nr ecent developments allow black-hole masses to be readily\nestimated in d istant active galaxies. Although these\nestimates are only accurate to within a uncertainty of a factor\nof a few\, they are still very useful for statistical studies.\nI will summarize this mass estimation method a nd present some\nresults of applying this method to samples of active ga laxies\nand quasars. Furthermore\, I will outline ongoing efforts with\n collaborators in constraining the cosmic growth of supermassive\nblack h oles and their effect on galaxy evolution.\n\n\n UID:7C1140A9-6838-4C7C-9BBA-47AB59AD33CD TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060210T153000 DTSTAMP:20070620T140707Z SUMMARY:Friday\, February 10th\nMarianne Vestergaard TALK: 3:30\, Disq ue 919 CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20060210T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:1EC5D63B-B77A-4282-AF71-4F053E2F9B86 DTSTART;TZID=US/Eastern:20060525T153000 DTSTAMP:20070620T140707Z SUMMARY:RESERVED CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060525T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics\nColloquium on the \"Investigation of Hadronic Resonances and\nP entaquarks in STAR\" by Dr. Sevil Salur (Yale University)\n\nDREXEL UNIV ERSITY\nDepartment of Physics\n\nDr. Sevil Salur\nYale University\n\nTIM E: Thursday April 13th\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nD ue to their short lifetimes (few fm/c)\, resonances are used as probes\n to investigate the properties and formation of the fireball in heavy\nio n collisions. Yields and spectra of resonances such as the\nSigma(1385) are measured in p+p\, d+Au and Au+Au collisions at\nsqrt(s)=200 GeV by the STAR collaboration using the Relativistic Heavy\nIon Collider. \n\n The collision dynamics are studied with the Sigma(1385)\nratio in compar ison to other resonance/stable particle ratios in these\ncollision envir onments. This allows us to explore the re-scattering\nand regeneration effects between chemical and thermal freeze-out and\nto estimate the lif etime of the hadronic phase. The transverse\nmomentum dependent medium effects are investigated via the nuclear\nmodification factors. The imp lications of these results on thermal\nand microscopic models are discus sed. UID:3C043186-16D3-4C6A-967C-649FA8D3745A TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20060413T153000 DTSTAMP:20070620T140707Z SUMMARY:Dr. Sevil Sadur (Yale University) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060413T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:9 DESCRIPTION:The Department of Physics cordially invites you to attend a Physics Colloquium on \"The Giant Magneto-Resistive (GMR) Effect \" by P rof. Som Tyagi\n\n\nDREXEL UNIVERSITY\nDepartment of Physics\n\n\nDr. So m Tyagi\nDepartment of Physics\nDrexel University\n\nTIME: Thursday Octo ber 18th\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\n\nThe 2007 Nobe l Prize for Physics was awarded to Albert Fert of France and Peter Grunb erg of Germany who independently discovered the Giant Magneto-Resistive (GMR) effect. The GMR effect is the magnetically induced change in the e lectrical resistance of a sample. The GMR effect is solely responsible f or the development of highly dense computer storage devices. I will pres ent a brief description of the GMR effect and discuss how it is an outst anding example illustrating the beauty and utility of science coming tog ether.\n UID:F8514539-61EC-46C1-93B2-7F871E9808C4 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20071018T153000 DTSTAMP:20071017T152701Z SUMMARY:Som Tyagi (Drexel University) CREATED:20071202T022833Z DTEND;TZID=US/Eastern:20071018T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 DESCRIPTION:The Department of Physics cordially invites you to attend a Colloquium Lecture on \"Network Dynamics and Cell Physiology\" John J. Tyson Department of Biological Sciences (Virginia Tech.)\n\n\nDepartment of Physics\nDrexel University\n\nProf. John Tyson\nVirginia Tech.\n\nTI ME: Thursday 3:30 pm November 16nd 2006\nLOCATION : DISQUE 919\n\nABSTRA CT\n\n\nComplex networks of interacting proteins control the physiologic al\nproperties of a cell (metabolism\, reproduction\, motility\, signali ng\,\netc.). Intuitive reasoning about these networks is often sufficien t to\nguide the next experiment\, and a cartoon drawing of a network can be\nuseful in codifying the results of hundreds of observations. But wh at\ntools are available for understanding the rich dynamical repertoire of\nsuch control systems? Why does a control system behave the way it do es?\nWhat other behaviors are possible? How do these behaviors depend on the\ngenetic and biochemical parameters of the system (gene dosage\, en zymatic\nrate constants\, equilibrium binding constants\, etc)? Using b asic\nprinciples of biochemical kinetics\, we convert network diagrams i nto\nsets of ordinary differential equations and then explore their solu tions\nby analytical and computational methods. We illustrate this appro ach\nwith a mathematical model of cell cycle transitions in eukaryotes.\ n\nReferences:\nTyson\, Chen & Novak (2001) Nature Rev. Mol. Cell Biol. 2:908-916 Tyson\,\nCsikasz-Nagy & Novak (2002) BioEssays 24:1095-1109 Ty son\, Chen & Novak\n(2003) Curr. Opin. Cell Biol. 15:221-231 Csikasz-Nag y et al. (2006)\nBiophys. J. 90:4361-4379 UID:86EF8F1C-0AA4-4E77-9202-CA96AFE56F57 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20061116T153000 DTSTAMP:20070620T140707Z SUMMARY:John Tyson (Host Jian-min Yuan) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20061116T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:8 TRANSP:OPAQUE UID:9B7FBA7E-95B7-4E58-921A-AA299DD11AB6 DTSTART;TZID=US/Eastern:20070125T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070125T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:6 TRANSP:OPAQUE UID:00F9DAE7-05A0-4A7A-94F0-EF9AC56D5BE9 DTSTART;TZID=US/Eastern:20080320T153000 DTSTAMP:20070723T154447Z SUMMARY:Finals Week (No Colloquium) CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20080320T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Colloquium Lecture\non \"Double Chooz: Searching for the next neutrin o mixing angle\, a theta_13\nmeasurement\" by Dr. Steven Dazeley (LSU)\n \nColloquium Seminar Series\nDepartment of Physics\nDREXEL UNIVERSITY\n\ nDr. Steven Dazeley\n\nTIME: Thursday 3:30 pm October 27th\nLOCATION : D ISQUE 919\n\nABSTRACT\n\nThe study of neutrinos has accelerated since th e mid 1990's\nwith a number of new detectors being built. There are now known to be\nat least three families of neutrino\, the electron\, muon a nd tau\nneutrino. We know from state-of-the-art detectors such as Super -K\,\nKamLAND and SNO that neutrinos can oscillate from one family to\na nother in a process called mixing. In fact\, muon neutrinos readily\nmi x with tau neutrinos and electron neutrinos mix with muon neutrinos.\nBu t do electron neutrinos mix with tau neutrinos? This question has\nfar reaching consequences for cosmology. If the final mixing\nparameter can be found\, and if it is not equal to zero\, it may be\npossible to find out what caused the asymmetry between matter and\nanti-matter in the un iverse. I will discuss a new neutrino detector\nto be built on the Fren ch/Belgian border. This detector will attempt\nto measure the third and final neutrino mixing parameter theta_13\, a\nmeasure of how easily ele ctron and tau neutrinos mix.\n UID:3C519460-40E3-4C9E-BA43-7D788DD13445 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20051027T153000 DTSTAMP:20070620T140707Z SUMMARY:The Department of Physics cordially invites you to attend a Coll oquium Lecture\non \"Double Chooz: Searching for the next neutrino mixi ng angle\, a theta_13\nmeasurement\" by Dr. Steven Dazeley (LSU)\n CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20051027T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:CD6D559F-A346-44C5-8EB8-DE4052148CAC DTSTART;VALUE=DATE:20070402 DTSTAMP:20070620T140707Z SUMMARY:First Day of Classes CREATED:20071202T022832Z DTEND;VALUE=DATE:20070403 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:208D04EB-AAB4-40E2-8EE4-D0838996880B DTSTART;TZID=US/Eastern:20050907T150000 DTSTAMP:20070620T140707Z SUMMARY:Karpagam's thesis defence CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20050907T160000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:B160CD8A-C884-48AA-AE87-9201797589F4 DTSTART;VALUE=DATE:20060925 DTSTAMP:20070620T140707Z SUMMARY:First Day of Classes CREATED:20071202T022832Z DTEND;VALUE=DATE:20060926 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:Speaker: Sanford Leuba (Pittsburgh)\nHost: Guoliang Yang (Ph ysics) gyang@physics.drexel.edu\n\nTitle: Chromatin Fiber and Nucleosome Dynamics\, One-at-a-time\nLocation: Disque 919\nTime: May 19th 2005\nAb stract: \nThe importance of forces for the function of every living cell has\nbeen recognized recently and has lead to significant research effo rts\nto measure them\, and to understand how the energy stored in chemic al\nbonds can be transformed into mechanical energy of movement. There\ nare numerous intracellular forces: reversible structural\ntransformatio ns of chromatin and chromosomes during the cell cycle\,\nmovements of ch romosomes during mitosis and meiosis\, movements of DNA\nand RNA polymer ases along template DNA during replication and\ntranscription\, etc. To understand forces at the level of the single\nnucleosome or chromatin f iber\, we have turned to single-molecule\napproaches\, which combined wi th the more traditional biochemical and\nbiophysical approaches can be u sed in hope of achieving major\nbreakthroughs in understanding of chroma tin structure\, dynamics and\nfunction. Using optical tweezers\, magnet ic tweezers\, and single pair\nfluorescence resonance energy transfer (s pFRET)\, we have measured the\nforce to unravel individual nucleosomes\, determined the force\ndependence of nucleosome assembly\, as well as ob served a dynamic\nequilibrium between chromatin assembly and disassembly in real time.\n\nhttp://cbpmedia.cbp.pitt.edu/leuba/leuba.html\n\n\n\n UID:AA6BC10D-A3E2-4BDE-BCFF-27C580E3E50E TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050519T153000 DTSTAMP:20070620T140707Z SUMMARY:Sanford Leuba (Pittsburgh University) Chromatin Fiber and Nucleo some Dynamics\, One-at-a-time CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050519T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 DESCRIPTION:\nDrexel University Physics Colloquium\nApril 28\, 2005 3:30 pm Disque 919\n\nHost : Roberto Ramos\n\nTitle: Satellite Observed Warm ing Signals in the Arctic\n\nSpeaker: Josefino C. Comiso\, Ph.D\, NASA G oddard Space Flight Center\n\nAbstract:\n\nGlobal warming signals have b een shown by numerical models to be amplified in the polar regions becau se of\nice-atmosphere feedbacks associated with the high reflectivity of the ice and snow that blankets much of the region.\nAnalysis of infrare d satellite data reveals that the Arctic region has been warming at the rate of 0.5 ºC per decade\nsince 1981 which is almost an order of magnit ude higher than that observed globally in the last century from\nmeteoro logical stations. It is also apparent that there is large spatial varia bility in the trends with the most\npositive occurring in North America and the Western Arctic and surprisingly\, negative trends are observed i n parts of\nRussia. During approximately the same period\, the Arctic perennial ice cover\, which consists mainly of the thick\nmultiyear ice cover declined at a rapid rate of 9.2 % per decade. While large interan nual variability in the\nperennial ice area was observed in the 1980s an d early 1990s\, the perennial ice areas from 1998 to 2004 have been abno rmally low compared to the average perennial ice area during the previou s 20 years. Moreover\, the length of melt temperatures has also been i ncreasing by 13 days per decade over sea ice covered areas\, suggesting concurrent thinning in the ice cover. In other regions\, the length of melt has increased by 5 days per decade over Greenland\, showing consist ency with the observed thinning in the ice sheets and increasing extent of melt areas. The length of thawing at the permafrost areas of North A merica has also been increasing at 7\ndays per decade\, which can be a m ajor concern in inhabited regions while at the same time. Furthermore\, the areal\nextent of the snow cover in the entire Northern Hemisphere h as been decreasing by about 2.6 % per decade while most\nglaciers in the Arctic region have been declining. The locations of most rapid changes are in same general areas as\nwhere the surface temperature data show c onsiderable warming. The overall impact of aforementioned changes in th e Arctic region can be profound\, especially if the current trends conti nue into the next decade.\n\n\n UID:DCC3B548-A669-43CD-A8EA-A19427886349 TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20050428T153000 DTSTAMP:20070620T140707Z SUMMARY:Josefino C. Comiso\, Ph.D\, NASA Goddard Space Flight Center \"S atellite Observed Warming Signals in the Arctic\" CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20050428T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:0 TRANSP:OPAQUE UID:1F8C3F19-0E68-4E6A-B2BB-A10C541E8850 DTSTART;TZID=US/Eastern:20060309T153000 DTSTAMP:20070620T140707Z SUMMARY:TBA CREATED:20071202T022831Z DTEND;TZID=US/Eastern:20060309T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:17 DESCRIPTION:\nThe Department of Physics cordially invites you to attend a Physics\nColloquium on \"CP Violation in the B System\" by Prof. Danie l Marlow (Princeton University)\n\nDREXEL UNIVERSITY\nDepartment of Phys ics\n\n\nProf. Daniel Marlow\nPrinceton University\n\nTIME: Thursday Feb 15th\, 3:30 pm\nLOCATION : DISQUE 919\n\nABSTRACT\n\nCP Violation is a small difference in the behavior of matter and anti-matter. It is acc ommodated in the standard model of elementary particles in a simple\, but elegant\, way by the Kobayshi-Maskawa (KM) quark mixing matrix. P roposed in 1973 at a time when the quark model was not yet firmly establ ished and only three quarks were known\, the KM mechanism posited the ex istence of six quarks\, all of which were subsequently discovered. In the past decade\, the B Factories operating in Japan and the US have pro duced samples of B mesons large enough to allow a quantitative test of t he KM picture of CP violation. In this talk\, I will review some rud iments of the theory and describe the experimental technique used to mak e the measurements. The results will be compared to the KM picture and I will offer a few comments on future prospects in B physics.\n UID:B4953233-5F84-495E-8E61-6032100187FD TRANSP:OPAQUE DTSTART;TZID=US/Eastern:20070215T153000 DTSTAMP:20070620T140707Z SUMMARY:Daniel Marlow (host: Jelena Maricic) CREATED:20071202T022832Z DTEND;TZID=US/Eastern:20070215T163000 END:VEVENT BEGIN:VEVENT SEQUENCE:3 TRANSP:OPAQUE UID:27C3BFA2-373E-4306-95CB-E3EFDC0D9492 DTSTART;TZID=US/Eastern:20071128T153000 DTSTAMP:20071126T190223Z SUMMARY:CoAS Dean's Seminar ATTACH;ENCODING=BASE64;FMTTYPE=application/octet-stream;VALUE=BINARY;X-A PPLE-CACHED=1;X-APPLE-FILENAME=Jelena Maricic Poster final.bmp:Qk2ishoAA AAAAEIAAAAoAAAAKgMAADgEAAABABAAAwAAAGCyGgAAAAAAAAAAAAAAAAAAAAAAAPgAAOAHA AAfAAAAIBAgECAIIAggECAQIBAgECAQIRAhECEQIBAhECEQIBAgCCAQIBAhEEEQQAggCCEQI BAgCCAQIBAgECAIIBAgCCAQIBAgECAIIRAgCCAIIBBACCAIIRAgECAQIAggECAQIRAhECAII AggECAQIAggCCEQIRAhECAIIRAhECAQIRAhECAQIBBBEGEYYRiBGGEYYRghECAQIQghCCAIQ AhACCAQIBAgCEAIIRAhECEQIRBBECEQQRBBEEEQYRBAEEAIYRiiKOIwAjGiIEAQYRCBGGEYY RhhEGEYYRhhGIEYYRhhEGEYgRiBGIEYYRBhEGEQYRhhGGEYYRhhGIEYgRhhGIEYgRiBGIEYg SCBGKEgoiChIKIgoiChIMIgoiCBIGEYYRiBIIEggRihGKEggSChIKEgoSChIKEgoiChIKEgo SCiIKIgoiCiIKEgoSCBIIEgoSCBIIEggRiBIIEgoiDCIMIgwiChIMIgwiChIKEgwiDCIMIgw iDCIKEgoiChIKEgwiiiIKIgoiCiIKIgoSCBIIEgwSDCIKIgwijCIOIw4jChKMIw4jjCMOIwA zHjMOIwwijCMOIw4jDiMOIwwjDCKMIowiiiKKEgoSCiIMIgwijCKMIowijCKMIo4ijiMOIw4 ijCKMIo4ijiMAM54jDiKOIw4ijCMOIw4ijiMOIwAjkDMeIw4jDiMOIwwjDCMOIw4jDiMOIw4 jDCMOIwwjDCKOIw4zADMeIwwjDiOCNBAjniOOIw4jACOQM54zACMSM5I0EDOeIowjDiOAI54 jCCKKEo4jgjOQM54jDjMONAIzkDQeM4AjECMeM44jDCMOI4AzkDOeMw4jACMeIwoijiMAM54 jDiMENJpFFjUQNBAzkjQQM5I0EjQSNBIzkjOWNJY0FDQSNBIzkjQUNJI0EjQUNJY0kjQQM5A zkDQSNBA0EjQSM5Q0FDQSNBI0FDQUNJI0FDSYRZpFmESURJRElESURJRElDSSNBI0FDQUNBI 0EDQSM5Q0ljSUNJQ0lDQSNBI0EjQUNJQ0kjSQNBQ0FESUNJY0mESWNJZElDQQNBI0EjQeI4I 0GkWWNRIzkjQUNBQ0EjQQNBI0FkUQVq5WFDQUNBhEnFUeVR5VkGUqVB5lmHaiZqhFGEUeRhp FGEUcRZxVmEUWRB5VHlUeVRJmInaiZqp3rFSWRBhElkSaVRBmIFckdy5VmFSaVR5WHFWWRJh VGEQYRBpFmEUWRJpVmlWWRJREEjQSRBZEmkUeVh5WGEWWRRZEmkUWRRhVHEUcVZhFFEQURBh EmkWYRRhEmkWYRJREmEUYRRZElkSWNJREmESeVZxWGkWcVZpVmkUYVJxllncod6BmrlYeVZx VkmakdyxVHlWQZaRmpmciZqxVGFSQZiyIqnciZiR3JHckdqZnJmasVZRFFkUYRJZEmESYVRp VGlUYRRxVmlUYVJpFGESaVRpVmlWYRJREmFUYRJZElkQYRJpFGEUYRJZFGkWeVhZEmEScRZp FFEQWRJpFGEUaVZpFGkWYRRZEmESWRBZEmESWRJhElkSURBY0FDSWNBREGESWNJY0lkQWRJg 0mESYRRZElEQYNJpEnFUcVZpFFkSWRJpFEFYoeC55oHo6m7aLOmgkVqJWomasVhhFFkSWRJZ EmkUcVZBWLkWcRRpFmkUYRJZEmESYRRhFGESWRBREFkQURBQ0EjOUM5ZEGESYRJZElkSWNBh EHFWWZyhnpmckZqJmrlUYRBhEGEQWQ5ZDlkQaRJpEnEScVR5VEFWgViBWIFYgViBWKkUUM5I jkjQUNJY0ljSWNJZElkSWRRZEmESaRR5FkFYmV655JIo4mzqbuJu4m7ibuJu6m7ibups0ijx 4pmciVipFFkQURBIzEjOQMx4zDiMOIo4yjjMAIx4jDiMOMw4jDiMMIowijCIMIgwiDCIMIg4 ijCKMIo4zDjMAMx4jDiKMIgwiDCKMIgwiDiKCM5IzkjMQIx4zDCKOIo4zDiKMIowiDCIMIgw iDCIMIgwiDCIOIo4yjCIMIgwiDCIMIgwiDiIOIo4ijCIMIgwiDCIMIgoiDCIOMoIzHlUYdyZ nLFUSMx4iDCIMIgwiCiGKIYwiDCIMIgwiDCIOIo4yjjKMIgohjjICMxQzEDMcIowijiKAMx4 ijCIKIgIBAgECAQIBAgECAIIAggCCEQIRAgCCAIIRAgCCAIIRAhECAIIBBBECAQIBAgCCAQI BAgECAQIBAgECAIIBAgECAQIBAgECEQIRAgCCAIIBAgECAIIBAgCCAIIRAgCCAQIAghECEQI BAgECAQIBAgECEQIRAgECEQIRAgEEEQIRAhECAQQRBBEGEYYRiBGGEYYRhBECEQIAggCCEIQ RBBEEAIIRBBEEEQIRAhECEQIRAhECEQQRBBEEAQYRhAEGAQgRjiKCM5AzHCKGEYYRCBGGEQY RBhEGEQYRBhEGEYYRiBGIEYYRhhGGEYYRhhEGEQYRiBGGEYYRiBGIEYgRiBGIEYYRiBGIEYg SChIIEgoSChIIEYgRiBGIEggSCBGIEYgRiBIIEggRihIKEgoSChIKEgoSChIKEgoSChIKEgo SCBIIEggSCBIIEgoSCBIIEgoSCiIKIggSCBIKIgwiChIKIgoiCiIKEgoSCBGIEYoSDCIMIgw iDCIKIgoSCiIKIgoiCiIKEgwijCIKIgoRiBIKEYoSDCIMIgwijCIOIw4jjBOAE5QlEiSUNBQ 0EjOeIwwijCKMIwwSjBKMIowijCKMIowijCKKEgoSChIKEgwiDCKOIo4jDiMOIw4jDiMOIow iChIMIo4ijiMAM5AjHiMOIowijCMOIw4jACMQM5IzkjOQI5I0HiOMIwwjDCKMIwwjDiMOI4A jniMOIwwjDiMOIwAzEjMQMx4jDiOAI5IzkDOeM4AjkDOeMw4jDiOAI5AjniOOIw4jACMQM54 jihKKIo4jgjQQNB4jgiQUNJI0HiMAI5A0EjQSNBI0EDOQI5I0FDQUNBI0EjQeI4wjACMQM54 jDiMCNBY0lDQQI5I0FDSSNBI0EjQUNBAzkCOSM5IzkjQSNBQ0FkSYRRQ0kjQWNJhFFjSSNBQ 0EjQQNBQ0lkUUNJQ0FEQSM5IzlDQUNJIzlkSYRRREkDOSM5Q0FESWNJQ0lDSUNJQ0ljSUNJI 0EDOSNBQ0lkSUNJQ0EjQSNBI0EDQSNBREkjQeI4I0GEUYRRQ0lDQYRRpFmEUUNJI0kjQeIwI 0FjSWNJI0FDQWNJZElDSQM5AzlESYRRhEmEUeVhhVFEOaRJh3JHaoVJxlGHcod6xVFkQaRRp FFjQUNBZElkQcVJBlrFSYVJxVnmYQZih3LFUcVRpVFkQYRJxFGEUaRZJmrlYWRJZEFkQQViC IuncqRBxFGkWYRRBWomasVZZElDQWNJZFGEUcVZ5VmEUYRRhFnEWaRZxVnlYWRJQ0FDOSNBp VFGcuVhZEmkUYRRREFDSWRJhFFkUUNJREmkUcRRpFFkSURJZEmESaVR5VkmagZi5lnmWeZh5 lnmWcVRxVkmaqVRxVEmagZqJmLlWaRRxVHFUcVR5WEmckdyJmIFUoRJZFFkUYRJREFEQWRBR EFkQWRJhFGkUcRJxVGlUaRJpVmlWYRRZFGEUYRRxVmESWRJpFGEUURJhEnlYSZqpFGlWQVi5 VmESaRRxVmlWWRJpFnEWaRRhFFkSWRJZEmESWRJZElkUURBRDlkQWNJZElkSYRJZElDQURBQ 0FkSWRJZEFjQWRJhEnEUcVZpFGESYRJxVklcseSJ6vmogerx6JlgkVyZnpmcgVihElkSWRJh EmESYRJpFGkUaRRpFGEUYRJhEmEUaRRpFGESWRBhEGEQWRBQ0FDQURBZEFkSYRJpFGEUYRJZ EmkSSViZnKGcod6ZnIFWqRJpEmkSWQ5ZDlkOWRBpEnFSaRJxVEFWiViRmolaiViBWLFYUNJQ 0FDQWRJQ0FDQWNJY0lkSWRJY0GDSeRZJWolaoVy5opIq6m7ibuJu4m7ibupu6m7ibuJs4mr6 IqGekVq5VmESWRBIzlDOSM5AzkDMeIwwijiKOMwAzHjMOIw4jDiMMIowijCIMIgwiDCIMIgw iDCIMIg4ijiKOIowijCIMIgwijiKMIgwiDiKAMxIzkDMeIo4yjjKOMwAzHjKMIgwiDCIMIgw iDCIMIgwiDCIMIgwiDCIMIgwiDCIMIgwiDiIOIowiDCIMIg4ijiKOIgwiDCIMMgwiAjMYRBh EFDOQMp4yDiIMIgwiDCIMIgwiDCIOIgwiDCIMIowijiKMIgohjCIOMo4yjjKMIowiDiKAMx4 ijCIKEYAAggECAIIAggCCAIIAggECAIIBAgECAIIAggECAQIRAhCCAIIBAgECAIIBAgECAQI AggECAQIAggECAQIAggECAQIAggECEQIRAgCCAIIAggECAQIRAhEEEQIRAgECAQIAghECEQI RAgCCAQIBBBEEEQIRAgECEQIBAgEEEQIBAgECEQIRBBEEEQQRhBEEEQQRBBEEEQIBBACEEQI RAhEEEQQRBBEEEIIRAhECEQIRAhECEQQRBBGEAQgRiBGGEQYRiBIMIgwiCBIGEQYRCBGGEYY RhhGGEQYRBhEGEQYRiBGIEYgRiBGGEYYRhhGIEYgRiBGIEYYRhhGIEYgRiBGIEYYRiBGIEgg SCBIIEggRiBGIEYgRhhGIEggSCBGIEYgRiBIIEggRihIKEgoSChIIEgoSChIKEggSCBIIEgg SCBIIEYgRiBGIEggSCBIIEYgSCiIKIgoiCiIKIgoiDCIKEgoSCiIKEgoSCBGIEYoSChIMIgw iCiIKEgoSChIIEgoSChIKEgoSCiIMIgoSChIKEgoSCiIMIgwiCiIMIwIkEiQWNZ5HHkcaRhh FFDSQI5ojChKMIowjDiM