'07 セミナー日程表

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吉川研究室主催

  
Time 05/25(金) 10:30〜12:00
Place Physics Building, Room 439
Speaker Dr. Inagaki
Affiliation Yoshikawa Laboratory, Kyoto University
Title A probabilistic method for the experimental determination of contacts between grains
Abstract By the use of MD numerical simulations, we calibrate a probabilistic method for the experimental determination of contacts between grains. Because the grains are polydispersed in size and due to the finite resolution of actual grain packings photos, acontact is experimentally detected when the distance between the centers of two neighbouring grains is less than the mean diameter increased by some arbitrary fraction ε. With the probability Pijk(ε) to detect in an environment of 'k' neighbours 'j'apparent contacts out of 'i'real ones, we can compute nik, the number of grains with 'i' ¥emph{true} contacts among 'k' neighbours,from the Njk(ε)'s, the numbers of grains with 'j' detected contacts and 'k' neighbours. These probabilities are calculated from grain size and grain distance distributions which are of easy empirical access. We show that nik presents a plateau value independent of that of 'ε'. We study the quality of the resulting estimate of the coordination number as a function of the packing polydispersity and density. Generalisation of this approach to non-granular systems could be worked out.
Time 05/11(金) 10:30〜12:00
Place Physics Building, Room 439
Speaker Dr. Nagamine
Affiliation Yoshikawa Laboratory, Kyoto University
Title Characteristics of spatiotemporal patterns formed by Ag and Sb
Time 04/27(金) 10:30〜12:00
Place Physics Building, Room 439
Speaker Dr. Takayuki ARIGA
Affiliation Department of Physics, Graduate School of Science Kyoto University
Title The concerted nature between all three catalytic sites of rotary motor F 1-ATPase
Time 04/23(月) 10:30〜12:00
Place Physics Building, Room 439
Speaker Dr. Selgio Alonso
Affiliation Fritz-Haber Institute, Berlin, Germany
Title Active surfactants in thin films
Time 04/20(金) 10:30〜12:00
Place Physics Building, Room 439
Speaker Dr. Damien Baigl
Affiliation Departement of Chemistry, Ecole Normale Superieure
Title Systems Biomimetism
Time 04/13(金) 10:30〜12:00
Place Physics Building, Room 439

Speaker Prof. Konstantin Agladze (The George Washington University),
Mr. Marcel Hörning (Kyoto University, Kyoto)
Title Experimental development of the ways to control spiral waves

Speaker Prof. Valentin Krinski (Nonlinear Institute, Nice)
Title Controlling cardiac chaos:the energy needed is decreased in experiment more than 2 orders of magnitude

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セミナー主催研究室について

京都大学大学院 理学研究科  物理学第一教室 
吉川研究室



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(semimaster@chem.scphys.kyoto-u.ac.jp)