MONDAY, NOVEMBER 17

"Spin Network Representation for Quantum Gravity and Vassilev Invariants," Rodolfo Gambini, Universidad de la Republica (Uruguay), 2:00 p.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (863-9605).

"Microscopic Models of Macroscopic Behavior: Time's Arrow and Boltzmann's Entropy" (condensed, atomic, and molecular physics), Joel Lebowitz, Rutgers University, 3:30 p.m., 339 Davey Laboratory, Department of Physics (863-0165).

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

"TUP1 and GCN5: Turning Chromatin Off and On," Sharon Y. Roth, University of Texas at Houston, 4:00 p.m., 101 Althouse Laboratory, host: Jerry Workman, Department of Biochemistry and Molecular Biology (865-3072).

TUESDAY, NOVEMBER 18

"Unipotent Group Schemes and Rational Torsion Points on Jacobian Varieties," David Penniston, University of Georgia, 12:20 p.m., 113 McAllister Building, host: Ken Ono, Department of Mathematics (863-9682).

"Small Heterocycle Doing Big Jobs: Asymmetric Synthesis and Utilization of Lactones and Lactams in Natural Products Synthesis," Dan Romo, Texas A&M University, 1:15 p.m., S-5 Osmond Laboratory, Department of Chemistry (865-4041).

"Covariant Formulation of Matrix Theory" (elementary particles and fields), Djordje Minic, Penn State, 3:30 p.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (865-4376).

"The Interface of Nutrition Science and Nutrition Policy," Richard Allison, American Society for Nutritional Sciences, 4:00 p.m., 110 Wartik Laboratory, Intercollege Graduate Program in Nutrition (865-3448).

"Molecular Phylogeny of Protosomes," Damhnait McHugh, Harvard University, 4:00 p.m., 8 Mueller Laboratory, host: Billie Swalla, Department of Biology (863-8577).

WEDNESDAY, NOVEMBER 19

"Development of an ESR/NMR Imaging Instrument: Images From a Live Rat's Head," Railynn Tressler, Penn State, 11:15 a.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).

"Kernel Growth and Development in Miniature Versus Wild-Type Maize," Yibing (Joanie) Zhou, Penn State, 12:20 p.m., 112 Buckhout Laboratory, Intercollege Graduate Program in Plant Physiology (865-0323).

"Dynamical Zeta-Functions and Their Applications," Boris Gurevich, Moscow State University (Russia), 3:30 p.m., 102 McAllister Building, Center for Dynamical Systems (867-7527).

THURSDAY, NOVEMBER 20

"The Weird History of LiNbO3," Kurt Nassau, Nassau Associates, 11:00 a.m., 301 Steidle Building, Ceramic Science and Engineering Program (865-4992).

(title to be announced), Jan Hendrick Evertse, Institute For Advanced Study, 11:20 a.m., 104 McAllister Building, host: Dale Brownawell, Department of Mathematics (865-7527).

"Skeletonizations of Phase-Space Paths," John Whelan, University of Utah, 11:30 a.m., 339 Davey Laboratory, Center for Gravitational Physics and Geometry (863-9605).

"Asymmetric Heck Reaction," Manisha Srivastava, Penn State, 12:15 p.m., S-5 Osmond Laboratory, Department of Chemistry (865-4041).

"Bose-Einstein Condensation and the Atomic Laser" (colloquium), Wolfgang Ketterle, Massachusetts Institute of Technology, 3:30 p.m., 101 Osmond Laboratory, Department of Physics (865-6123).

"Risk Assessment of Cryptosporidiosis for Immunocompromised Persons," Yvette Rauff, Penn State, 3:35 p.m., 16 Agricultural Science and Industries Building, host: L. Sordillo (863-5786).

"Rivers to Estuaries: Fish, Land, and Humans," Deanna Stouder, Ohio State University, 3:45 p.m., 112 Buckhout Laboratory, host: Robert Carline, Intercollege Graduate Program in Ecology (863-7221).

"The Chemistry and Biology of Leucine Zipper-Coiled Coils," Charles Vinson, National Institutes of Health, 4:00 p.m., S-5 Osmond Laboratory, Department of Chemistry (863-0889).

"The Calculus for Optimization and Modification of Dynamic Parallel, Distributed, and Interactive Artificial Intelligence Systems," Eugene Eberbach, Acadia University and Penn State, 4:00 p.m., 302 Pond Laboratory, Department of Computer Science and Engineering (865-9505).

"Kruskal-Wallis, Multiple Comparisons, and Efron Dice," Thomas P. Hettmansperger, Penn State, 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, NOVEMBER 21

"Carbon Nanotubes: Chemistry and Applications," Lyndon Charles, Penn State, 11:15 a.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).

"Career Opportunities at Government Research Facilities," J.P. Looney, National Institute of Standards and Technology, 12:00 noon, 339 Davey Laboratory, Department of Physics (865-0343).

"Single Cavity Mode Ringdown Spectroscopy," J.P. Looney, National Institute of Standards and Technology, 2:30 p.m., S-5 Osmond Laboratory, Department of Physics (865-6092).

"Chaos in Chemistry and Getting Back in Control," Arjan Van der Vaart, Penn State, 2:30 p.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).

"Quark-Gluon Plasma" (elementary particles and fields), Johann Rafelski, University of Arizona, 3:30 p.m., 339 Davey Laboratory, Department of Physics (865-7534).

"Anisotropic Mesh Adaptation," Michel Fortin, Universite Laval (Canada), 3:30 p.m., 102 McAllister Building, host: Douglas Arnold, Department of Mathematics (865-0246).

SATURDAY, NOVEMBER 22

(none)

SUNDAY, NOVEMBER 23

(none)

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