Report of travel grants to the international biophysics meeting, paris, june 22-27, 1964

Travel grants for international biophysics meeting, and membership list of international organization for pure and applied biophysic

Loop-closure principles in protein folding

Simple theoretical concepts and models have been helpful to understand the folding rates and routes of single-domain proteins. As reviewed in this article, a physical principle that appears to underly these models is loop closure.Comment: 27 pages, 5 figures; to appear in Archives of Biochemistry and Biophysic

An electron microscope study of liver cell in carbon tetrachloride intoxication, significance of "opaque area"

Electron microscope study on the rat liver cells of carbon tetrachloride poisoning has been reported. Observations have been made on the osmic fixed tissue sections obtained from the liver at early stages of poisoning, 5 to 22 hours after carbon tetrachloride oral administration, 0.25ml. per 100g. body weight. Special attention is paid on the appearance of electron dense area, opaque area, in cytoplasm, which is compased of fibrous components, probably originated from endoplasmic reticulum. This will be an important sign of cell degeneration. Toluidine blue, PAS and methyl green-pyronin stainings of the thicker sections from the same samples as used for electron microscopy revealed that the opaque area is stained by toluidine blue and pyronin but not by PAS. The opaque areas appear already five hours after the carbon tetrachloride administration and show some continuity with elongated filaments of endoplasmic reticulum. At an advanced stage of paisoning the opaque area increases in its number and size, but some of them are shrunk as a mass, being separated from the surrounding cytoplasm with scanty area. Often they form denser masses in the center and loak like the lipid deposition. The picture suggests formation of lipid droplets in the case of fatty degeneration of the liver cell.</p

Quantum Games in Open Systems using Biophysic Hamiltonians

We analyze the necessary physical conditions to model an open quantum system as a quantum game. By applying the formalism of Quantum Operations on a particular system, we use Kraus operators as quantum strategies. The physical interpretation is a conflict among different configurations of the environment. The resolution of the conflict displays regimes of minimum loss of information.Comment: 9 pages, 4 figs, accepted in Phys. Lett.

Pemanfaatan Media Komunikasi Prima Tani, Aksesibilitas Kelembagaan Tani, dan Persepsi Petani Tentang Teknologi Agribisnis Industrial Pedesaan

This research aims to know the relation between Prima Tani media communications and accessibility of farmerinstitution with farmer perception about technology introduction of Rural Agribusiness Industrial. In this research tofind characteristic personal, Prima Tani of media communications and accessibility of farmer institution influencingfarmer perception about technology introduction of Rural Agribusiness Industrial in province of West Java and SouthSulawesi. Result of research indicates: nonformal education has correlation with perception of cooperator farmer inWest Java. Ages, formal and nonformal education has negative correlation with perception of noncooperator farmerin West Java at economic and social aspect. In South Sulawesi, formal education and experience of farm hascorrelation with perception of cooperator farmer at economic aspect, average income and land use field hascorrelation with social aspect. Average income and land use status has negative correlation with noncooperatorfarmer perception in social aspect and land use status at social aspect, land use status has correlation withnoncooperator farmer perception at economic aspect. In West Java, spread out technology and clinic agribusinesshas correlation with perception of cooperator farmer with biophysic and economic aspect. Prima Tani mediacommunications has correlation with biophysic and social aspect. Spread out technological and Prima Tani mediacommunication has correlation with perception of noncooperator farmer in West Java at social aspect, clinicagribusiness has correlation with noncooperator farmer in economic aspect. In South Sulawesi, spread outtechnological has correlation with biophysic and social aspect. Prima Tani media communications and clinicagribusiness has correlation with perception of cooperator farmer at social and economic aspect. In West Java,accessibility of farmer institution has correlation with perception of cooperator farmer in biophysic, social andeconomic aspect. Accessibility of farmer institution has correlation with noncooperator farmer perception in socialand economic aspect. In South Sulawesi, accessibility of farmer institution has correlation with cooperator farmerperception in social and biophysic aspect