MONDAY, SEPTEMBER 15

"Electron-Diffraction Studies of Hexatic Behavior and Surface Freezing in Liquid-Crystal Films" (condensed, atomic, and molecular physics), John Ho, State University of New York at Buffalo, 3:30 p.m., 339 Davey Laboratory,  Department of Physics (863-5347).
 

TUESDAY, SEPTEMBER 16

"Mechanism of the Dissociative Chemisorption of Methane on Iridium: Trapping-mediated or Direct?," Muddie Mullins, University of Texas at Austin, 2:30 p.m., Paul Robeson Cultural Center, Host:  Kristen Fichthorn, Department of Chemical Engineering (863-4807).

"Adaptations to Low Zinc Intakes: What Are the Limits?," Janet King, U. S. Department of Agriculture and University of California at Berkeley, 4:00 p.m., 110 Wartik Laboratory, Intercollege Graduate Program in Nutrition (865-3448).

"Flight Performance of Hummingbirds: Capacities, Constraints, and Trade-Offs," Peng Chai, University of Texas at Austin, 4:00 p.m., 8 Mueller Laboratory, Host: James Marden, Department of Biology (863-1384).
 

WEDNESDAY, SEPTEMBER 17

"Quantitative Aspects for On-Line Analyte Preconcentration Capillary Electrophoresis," Norberto Guzman, Johnson Pharmaceutical Research Institute, 11:15 a.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).
 

THURSDAY, SEPTEMBER 18

"The Enigma of the Heart Mountain Detachment Fault Resolved, Yet Again" (ore deposits), Ed Beutner, Franklin and Marshall College, 12:15 pm, 244 Deike Building, College of Earth and Mineral Sciences (863-7091).

"Identification of Virulence Factors in Predominant Staphylococcus aureus Genotypes of Bovine Mastitis," Chunlei Su, Penn State, 3:35 pm, 16 Agricultural Science and Industries Building, Host: L. Sordillo (863-5786).

"At the Frontiers of OCR," George Nagy, Rensselaer Polytechnic Institute, 4:00 p.m., 302 Pond Laboratory, Department of Computer Science and Engineering (865-9505).

"On Quasi Likelihood Equations with Nonparametric Weights," Bing Li, Penn State, 4:00 p.m., 201 Thomas Building, Department of Statistics (865-1348).

"Tibetan Lithospheric Kinematics: Inferences from Mantle Fabric" (geodynamics), Kevin Furlong, Penn State, 4:00 pm, 202 Research West Building, College of Earth and Mineral Sciences (863-7091).
 

FRIDAY, SEPTEMBER 19

"The Representation of Rivers in Global Climate Models," Taikan Oki, University of Tokyo, 1:30 pm, 256 Hammond Building, Department of Civil and Environmental Engineering (863-7091).

"Laser-Guided Chemistry in Metal Vapors," Robert Bernheim, Penn State, 2:30 p.m., S-5 Osmond Laboratory, Department of Chemistry (863-0119).
 

SATURDAY, SEPTEMBER 20

"Lead, Zinc, and Iron Minerals" (Fall Mineral Symposium), 8:00 a.m. to 12:00 noon and 2:30 p.m. to 4:00 p.m. (benefit auction 1:30 p.m. to 2:30 p.m.), 26 Hosler Building, College of Earth and Mineral Sciences (863-7091).
 

SUNDAY, SEPTEMBER 21

"Lead, Zinc, and Iron Minerals Field Trip" (Fall Mineral Symposium), 8:00 a.m., Deike Building Lobby, College of Earth and Mineral Sciences (863-7091).
 

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