MONDAY, DECEMBER 1

"Single Lepto-Quark Production in e-gamma and e+e- Collisions" (elementary particles and fields), Michael Doncheski, Penn State, 1:00 p.m., 339 Davey Laboratory, Department of Physics (863-0965).

"Black Hole Horizons and the Thermodynamic Strings" (elementary particles and fields), Finn Larsen, University of Pennsylvania, 2:00 p.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (863-9605).

"Biological Radical Generation: A New Role for Iron-Sulfur Proteins?" Joan Broderick, Amherst College, 2:30 p.m., S-5 Osmond Laboratory, Department of Chemistry (865-6553).

"New Structures in Complex Fields" (condensed, atomic, and molecular physics), Boris Veytsman, Penn State, 3:30 p.m., 339 Davey Laboratory, Department of Physics (863-5347).

"On Distributional Obstructions to Solving the Cohomological Equation for Conservative Vector Fields on Higher Genus Surfaces," Giovanni Forni, Princeton University, 3:30 p.m., 102 McAllister Building, Department of Mathematics (865-7527).

"Pennsylvania Greenwrap Tomato Industry: Production, Problems, Current Challenges, and Opportunities," Keith Eckel, Grower, 3:35 p.m., 112 Buckhout Laboratory, Department of Plant Pathology (865-3761).

"Tissue Factor--Factor VIIa Interaction: The Structural Dynamics of Initiation of Blood Coagulation," J.B. Alexander Ross, Mount Sinai School of Medicine, 4:00 p.m., 101 Althouse Laboratory, host: Tracy Nixon, Department of Biochemistry and Molecular Biology (865-3072).

TUESDAY, DECEMBER 2

"Nanoscale Physics: Building Tiny Bridges to the 21st Century," Vincent Crespi, Penn State, 12:00 noon, 339 Davey Laboratory, Department of Physics (863-0118).

"Microwave Dielectric Heating in Materials Processing," Gina Bowden, Penn State, 12:15 p.m., S-5 Osmond Laboratory, Department of Chemistry (865-4041).

"A Theorem of Kohnen and Zagier on Modular L-functions in 'Weight Aspect,' " Kevin James, Penn State,12:20 p.m., 113 McAllister Building, Department of Mathematics (865-7527).

"Ubiquitin and Cell Communication in Drosophila Eye Development," Janice Fischer, University of Texas at Austin, 4:00 p.m., 8 Mueller Laboratory, host: Zhi-Chun Lai, Department of Biology (863-0479).

"New Dimensions in Nutrition Education," Claudia Probart, Penn State, 4:00 p.m., 110 Wartik Laboratory, Intercollege Graduate Program in Nutrition (865-3448).

WEDNESDAY, DECEMBER 3

"The Role of Cooperativity and Oligomerization in Transcription Activation by DctD, a Sigma-54-Dependent, Enhancer-Binding Protein," Tracy B. Nixon, Penn State, 12:20 p.m., 112 Buckhout Laboratory, Intercollege Graduate Program in Plant Physiology (865-0323).

"Don't Stop Now: Readthrough Activation of Viral Gene Transcription," David Spector, Penn State, 3:30 p.m., 324 Agricultural Science and Industries Building, Intercollege Graduate Program in Genetics (865-5202).

THURSDAY, DECEMBER 4

"On Conjectures of Coleman and Oort," Bernardus Moonen, Princeton University, 11:20 a.m., 104 McAllister Building, host: Yuri Zarhin, Department of Mathematics (865-1901)

"Metric Versus Ashtekar Variables in the Two Killing Vector Reduction," Marco Zagerman, Penn State, 11:30 a.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (863-9605).

"Molecular Interactions in Liquids Studies with Two-Dimensional Raman Spectroscopy," Andrei Tokmakoff, University of California at Berkeley, 2:30 p.m., S-5 Osmond Laboratory, Department of Chemistry (865-6553).

"Adventures of a Science Reporter" (colloquium), Gloria Lubkin, Physics Today, 3:30 p.m., 101 Osmond Laboratory, Department of Physics (863-2622).

"Aging and Immunity," Fred Ferguson, Penn State, 3:35 p.m., 16 Agricultural Science and Industries Building, host: L. Sordillo, Department of Veterinary Science (863-5786).

"Effects of Iron Concentration and Flow Rate on Treatment of Coal Mine Drainage in Wetland Mesocosms: An Experimental Approach to Sizing of Constructed Wetlands," Teresa Manyin, Penn State, 3:45 p.m., 112 Buckhout Laboratory, host: Ted Williams, Intercollege Graduate Degree Program in Ecology (863-7221).

"Sampling and Modelling in Social Networks," Ove Frank, University of Stockholm, 4:00 p.m., 201 Thomas Building, Department of Statistics (865-1348).

"Winding Numbers and a Proof of the Fundamental Theorem of Algebra," Paul Baum, Penn State, 5:45 p.m., 116 McAllister Building, Department of Mathematics (865-7527).

FRIDAY, DECEMBER 5

"Essence of Forensic Entomology: Insects in Litigious Society," K.C. Kim, Penn State, 11:15 a.m., 118 Agricultural Science and Industries Building, host: William McCarthy, Department of Entomology (865-1895).

"Numerical Methods for Multiscale Transport Equations," Shi Jin, Georgia Institute of Technology, 3:30 p.m., 102 McAllister Building, host: Jinchao Xu, Department of Mathematics (865-1110).

SATURDAY, DECEMBER 6

(none)

SUNDAY, DECEMBER 7

(none)

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