MONDAY, NOVEMBER 10

"Collective Dynamics of Mesoelectrics" (condensed, atomic, and molecular physics), Jean Toulous, Lehigh University and National Science Foundation, 11:00 a.m., 339 Davey Laboratory, Department of Physics (863-5347).

"title to be announced," Octavio Obregon, University of Guanajuato (Mexico), 2:00 p.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (863-9605).

"Collective Excitations and Coherence of Bose-Einstein Condensates" (condensed, atomic, and molecular physics), Charles Clark, National Institute of Standards and Technology, 3:30 p.m., 339 Davey Laboratory, Department of Physics (863-5343).

"Ergodicity of Discrete Horospheric Actions," Vadim Kaimanovich, University of Manchester (England) and CNRS, 3:30 p.m., 102 McAllister Building, Center for Dynamical Systems (865-7527).

"Pennsylvania Hardwood Industry: Importance Production and Sugar Maple Decline," Kyle Kouterick, Penn State, 3:35 p.m., 112 Buckhout Laboratory, Department of Plant Pathology (865-3761).

"Modulation of Osteoblastic Calcium Channels by 1,25(OH)2D3," M. Cindy Farach-Carson, University of Texas at Houston, 4:00 p.m., 101 Althouse Laboratory, host: Carol Gay, Department of Biochemistry and Molecular Biology (865-3072).

TUESDAY, NOVEMBER 11

"Class Numbers of Real Quadratic Fields and Larry Washington's Colloquium," Ken Ono, Penn State, 12:20 p.m., 113 McAllister Building, Department of Mathematics (865-7527).

"Aggregation of Particles in Shear Flows," Bill Olbricht, Cornell University, 2:30 p.m., Paul Robeson Cultural Center, host: K. Fichthorn, Department of Chemical Engineering (863-4807).

"Hard Diffraction at DO" (elementary particles and fields), Andrew Brandt, Fermi National Accelerator Laboratory, 3:00 p.m., Davey Laboratory, Department of Physics (863-0783).

"Biological Diversity and the Wealth of Nations" (video conferencing with Hershey Medical Center), Thomas Lovejoy, Smithsonian Institution, 4:00 p.m. (refreshments at 3:45), 101 Thomas Building, Life Sciences Consortium (863-3650).

"Bioavailability and Absorption of Carotenoids from Foods," Mark Failla, University of North Carolina at Greensboro, 4:00 p.m., 110 Wartik Laboratory, Intercollege Graduate Program in Nutrition (865-3448).

WEDNESDAY, NOVEMBER 12

"Aerogels: Composites of Being and Nothingness," Debra Rolison, Naval Research Laboratory, 11:15 a.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).

"Relationship Between Root Lifespan and Root Respiration: What Have We Learned?" Dave Bryla, Penn State, 12:20 p.m, 112 Buckhout Laboratory, Intercollege Graduate Program in Plant Physiology (865-0323).

"The Structure and Thermodynamical Fommalism for Countable Topological Markov Chains-II," Boris M. Gurevich, Moscow State University (Russia), 3:30 p.m., 102 McAllister Building, Center for Dynamical Systems (865-7527).

THURSDAY, NOVEMBER 13

"Oxide Superconductors," Bob Cava, Princeton University, 11:00 a.m., 301 Steidle Building, Ceramic Science and Engineering Program (865-4992).

"A Criterion for Elliptic Curves with Lowest 2-Power in L(1)," Cunlain Zhao, Peiking University (China), 11:20 a.m., 104 McAllister Building, host: Winnie Li, Department of Mathematics (865-1669).

"The Effective String Description of Hawking Radiation," Saurya Das, Institute of Mathematical Sciences (India), 11:30 a.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (863-9605).

"Laser-Enhanced MRI: Putting Optical Pumping to Work" (colloquium), Gordon Cates, Princeton University, 3:30 p.m., 101 Osmond Laboratory, Department of Physics (863-0165).

"The Threat of E. coli," Richard Wilson, Penn State, 3:35 p.m., 16 Agricultural Sciences and Industries Building, host: L. Sordillo, Department of Veterinary Science (863-5786).

"Ecological Literacy: The American University After the Collapse of Technology," David Ehrenfeld, Rutgers University, 3:45 p.m., 112 Buckhout Laboratory, host: Chris Uhl, Intercollege Graduate Program in Ecology (863-7221).

"Minor Groove Recognition and Major Groove Catalysis by a Group II Intron Ribozyme," Anna Marie Pyle, Columbia University, 4:00 p.m., S-5 Osmond Laboratory, Department of Chemistry (863-0889).

"title to be announced," Victor Kolyvagin, Johns Hopkins University and Steklov Institute (Russia), 4:30 p.m., 102 McAllister Building (refreshments at 4:00 p.m. in 212 McAllister Building), host: Yuri Zarhin, Department of Mathematics (865-1901).

"Making Sense of Traces on Infinite Matrices," Nigel Higson, Penn State, 5:45 p.m., 116 McAllister Building, Department of Mathematics (865-8527).

FRIDAY, NOVEMBER 14

"Imaging, Spectroscopy, and Dynamics of Single Molecules, Single Proteins, and Biological Membranes," X. Sunney Xie, Pacific Northwest Laboratories, 2:30 p.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).

"K-Theory for Frechet Algebras (conclusion)," Nigel Higson, Penn State, 2:30 p.m., 117 Boucke Building, Department of Mathematics (865-7527).

"Finite Element Methods for Maxwell's Equations," Peter Monk, University of Delaware, 3:30 p.m., 102 McAllister Building, host: Douglas Arnold, Department of Mathematics (865-0246).

"Following the AIDS Epidemic Around the World," Judith Lasker, Lehigh University, 4:00 p.m. (refreshments at 3:30p.m.), 206 Walker Building, Department of Geography (865-3433).

SATURDAY, NOVEMBER 14

(none)

SUNDAY, NOVEMBER 16

(none)

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This issue of Science Seminars was produced by Barbara K. Kennedy and Susan Kemper.