MONDAY, APRIL 20

"Logarithmic Potentials and Their Applications," Steve Damelin, University of the Witwatersrand (South Africa), 2:30 p.m., 104 Osmond Laboratory, Department of Mathematics (865-7527).

"Exchange Interaction Between Ferromagnetic and Antiferromagnetic Layers" (condensed, atomic, and molecular physics), John Xiao, University of Delaware, 3:30 p.m., 339 Davey Laboratory, Department of Physics (865-5347).

"Molecular Analysis of MOT1, a Transcriptional Regulator and Member of the SNF2/SWI2 Protein Family," David T. Auble, University of Virginia, 4:00 p.m., 101 Althouse Laboratory, host: Joe Reese, Department of Biochemistry and Molecular Biology (865-3072).

"The Nature of Discovery in Physics" (Marker Lecture #1 of 4), Douglas Osheroff, Stanford University, 8:00 p.m., 112 Kern Graduate Center, Department of Physics (863-5811).

TUESDAY, APRIL 21

"How Does an Object Break? Capillary Collapse of a Film Bridge," Paul H. Steen, Cornell University, 10:00 a.m., 140 Fenske Laboratory, host: Ali Borhan, Department of Chemical Engineering (865-7847).

"Maternal Messages: How Do We Read Them? What Do They Say?," Barbara B. Knowles, The Jackson Laboratory, 11:15 a.m., 101 Althouse Laboratory, hosts: Ross Hardison and Webb Miller, Department of Biochemistry and Molecular Biology and the Life Sciences Consortium (865-3072).

"Physics, Biology, and Medicine" (colloquium), Hans Peter-Duerr, Max Planck Institut fur Physik, 12:00 noon, 358 Williard Building, Department of Physics and Science Technology and Society Program (863-2055).

"Canonical Heights in Characteristic p," Matt Papanikolas, Brown University, 1:00 p.m., 113 McAllister Building, Department of Mathematics (865-7527).

"Understanding Superfluidity in Helium-3" (Marker Lecture #2 of 4), Douglas Osheroff, Stanford University, 3:00 p.m., 101 Osmond Laboratory, Department of Physics (863-5811).

"Genetic Analysis of Heterocyst Formation," Peter Wolk, Michigan State University, 4:00 p.m., 8 Mueller Laboratory, host: Sarah Assmann, Department of Biology (863-9579).

"title to be announced," Bill Szymczak, Naval Research Laboratory, 4:00 p.m., 115 McAllister Building, Department of Mathematics (865-7527).

WEDNESDAY, APRIL 22

"Stable and Center Manifold Theorems for a Fixed Point: II," Boris Kalinin, Penn State, 10:30 a.m., 328E Health and Human Development East Building, Department of Mathematics (865-7527).

"Nanoelectrospray for Biological Mass Spectrometry," Matthais Mann, European Molecular Biology Laboratory, S-5 Osmond Laboratory, 11:15 a.m., Department of Chemistry (863-0119).

"Regulation of the Antimicrobial Naphthoquinones in Lithospermum erythrorhizon Roots," Lindy Brigham, Penn State, 12:20 p.m., 111 Tyson Laboratory, Intercollege Graduate Program in Plant Physiology (865-0323).

"Nuclear Spin Ordering in Solid Helium-3: A Model Magnetic System" (Marker Lecture #3 of 4), Douglas Osheroff, Stanford University, S-5 Osmond Laboratory, Department of Physics (863-5811).

THURSDAY, APRIL 23

"Hyperbolic Groups and Noncommutative Geometry," Heath Emerson, Penn State, 11:15 a.m., 3 White Building, Department of Mathematics (865-7527).

"Study of Protein Interactions in Living Yeast by Methyltransferase," Mai Xu, Penn State. 11:15 a.m., 101 Althouse Laboratory, Department of Biochemistry and Molecular Biology (865-3072).

"Heteropolymer Folding: Proteins and Beyond," Samuel H. Gellman, University of Wisconsin at Madison, S-5 Osmond Laboratory, 12:15 p.m., Department of Chemistry (863-0889).

"The Importance of Interactions Between Active Defects in Glasses at Low Temperature" (Marker Lecture #4 of 4), Douglas Osheroff, Stanford University, 3:00 p.m., 101 Osmond Laboratory, Department of Physics (863-5811).

"Clinical Pathology and General Fitness of Passerines: The Impact of Parasites," Daniel Dunmore, Penn State, 3:45 p.m., 112 Buckhout Laboratory, host: James Marden, Intercollege Graduate Program in Ecology (863-7221).

"The DQM Architecture: Facilitating Adaptive Multimedia Applications," Marty Humphrey, University of Colorado at Denver, 4:00 p.m., 302 Pond Laboratory, Department of Computer Science and Engineering (865-9505).

"Ice-Binding Mechanism of Winter Flounder Antifreeze Protein," Ailan Cheng, Penn State, S-5 Osmond Laboratory, 4:00 p.m., S-5 Osmond Laboratory, Department of Chemistry (863-0889).

"Ergodic Theorems Along Polynomials and Ramsey Theory," Vitaly Bergelson, Ohio State University, 4:30 p.m., 102 McAllister Building (refreshments at 4:00 p.m. in 212 McAllister Building), Department of Mathematics (865-7527).

FRIDAY, APRIL 24

"Enlisting Agents and Warehouses to Deal with Unstructured Data," Les Miller, Iowa State University, 11:00 a.m., 302 Pond Laboratory, Department of Computer Science and Engineering (865-9505).

"Detection of Trace Gas Contaminants Using Infrared Diode Laser-Based Methods: From the Laboratory to Space," Frank R. Tittel, Rice University, 2:30 p.m., S-5 Osmond Laboratory, Department of Physics (865-6123).

"Small x Physics and Why it is Interesting" (elementary particles and fields), Larry McLerran, University of Minnesota, 3:00 p.m., 339 Davey Laboratory, Department of Physics (865-7382).

"Effective and Computational Chaos," Mark Ablowitz, University of Colorado at Boulder, 3:30 p.m., 102 McAllister Building, Department of Mathematics (865-7527).

SATURDAY, APRIL 25

(none)

SUNDAY, APRIL 26

(none)

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