ovarian steroid secretion in Japanese quail (in Hungarian, with English abstract). Magyar Állatorvosok Lapja 50, 353-355.
Richter, G. (1995): Inkorporation und Mobilisierung von Vitamin A bei Legehennen. Arch. Anim
fill in this gap, this study aims to provide quantitative information on funding distribution, especially focusing on the individual level. To this end, I draw on a national grant database in the Japanese academia, which covers the majority of the
Authors:K. Hirose, T. Miyao, M. Aoyama, and Y. Igarashisnm>
Plutonium isotopes in the Sea of Japan were determined to assess radioactive contamination. Concentrations of 239,240Pu in surface water of the Sea of Japan were maintained at a constant level over the past two decades in contrast to 137Cs. A median value of surface 239,240Pu in the Sea of Japan in this period was 5.6 mBq/m3 with the range between 2.1 and 14.0 mBq/m3, which is slightly higher than that in the western North Pacific. The vertical distribution of 239,240Pu showed a surface minimum, a subsurface maximum and gradual decrease with increasing depth. The 241Pu/239,240Pu activity ratios in water columns were almost constant except for surface water. In regard to 239,240Pu in surface water of the Sea of Japan, these findings suggest that rapid recycling of deeper plutonium occurs in the Sea of Japan due to deep convection in winter and biogeochemical processes such as particle scavenging and remineralization.
The purpose of this survey is to study the present state and an evaluation of research activities in the field of life sciences in Japan. Based on the 5,107 papers from Japan in 1989 CD-ROM ofExcerpta Medica, a quantitative analysis to determine the present state of research activities in life sciences was conducted. There were 7 journals in which more than 50 papers by Japanese authors were published.Brain Research stood first. The ranking list of contributed papers demonstrates a preference of Japanese researchers' interest in international journals from commerical publishers rather than in society journals for the publication of their papers overseas. In view of the number of papers and the paper output per head, research activities of organizations were evaluated. The three national medical schools in Kyushu, Osaka, and Kyoto hold ranked high. A comparison between national medical schools and private medical schools shows that the former have higher productivities. Private medical schools were generally inactive, and they emphasized clinical activities more than research activites.
this study was to examine the anthropometric, body composition, and somatotype characteristics of Japanese young women and to focus on normal-weight obesity syndrome and sarcopenia diagnosis criteria.
The progress of forensic neutron activation analysis (FNAA) in Japan is described. FNAA began in 1965 and during the past 20 years many cases have been handled; these include determination of toxic materials, comparison examination of physical evidences (e.g., paints, metal fragments, plastics and inks) and drug sample differentiation. Neutron activation analysis is applied routinely to the scientific criminal investigation as one of multielement analytical techniques. This paper also discusses these routine works.
The amount of long-lived radioiodine, 129I (half-life 1.57·107 y) in the Japanese environment has been studied by measuring thyroids of humans and animals. The collected samples were thyroids of (1) humans in Ibaraki Prefecture, in Kanto district, the central part of Japan, (2) cattle in Aomori Prefecture, north part of Japan, and (3) wild deer in Chiba Prefecture, in Kanto district. The measured mean isotopic ratio 129I/127I for thyroids of cattle in Aomori Prefecture is 3.5±1.8·10-9. A higher value of 14±5·10-9 has been obtained for thyroids of wild deer in Kanto district. On the other hand, the measured ratio for human thyroids in Kanto district is 1±0.2·10-9. This value is significantly lower than that of cattle thyroids in Aomori and also those reported for human thyroids in Europe and USA. The higher mean ratio for cattle thyroid in Kanto district is possibly explained by the influence of nuclear reprocessing plant. Lower mean ratio for human thyroid might be due to higher dietary intake of algae.
Thermoanalytical studies on specialty polymers in Japan are reviewed. The basic and applied researches for the developments
of new specialty polymers such as high-performance polymers, liquid crystalline polymers, and biodegradable polymers during
the 1990's are introduced from the standpoint of thermal analysis. Many studies were performed for the improvements of durability
and thermal stability of engineering polymers, biodegradable polymers and so on. A special topic of researches on the thermal
behavior of polymers by high-pressure differential thermal analysis is included in this review.
A comparison of sources cited in the Japanese language Geographical Review of Japan and six western language, Japanese geographical serials reveals that while both cite the same proportion of foreign sources (a third), authors tend to select Japanese sources which are written in the language of the host publication. Foreign sources in the Japanese literature are overwhelmingly from the English language world, especially the United States, with a small admixture in German, from the F.R. Germany. The proportion of foreign sources in the Japanese literature appears to be in decline.
Authors:N. Momoshima, T. Toyoshima, R. Matsushita, A. Fukuda, and K. Hibino
Elemental concentrations in Japanese medaka and mosquitofish collected from uncontaminated rivers in Kumamoto, Japan were
analyzed by instrumental neutron activation analysis with k0 standardization method to know the background levels. A statistical analysis indicated the difference in metal concentrations
among rivers and species. Background levels of elemental concentrations in some aquatic insect larvae were analyzed and metal
concentrations were different among species, though they were collected at the same point. Enrichment factors of heavy metals
in insect larvae were in the order of 103−104 suggesting effectiveness of insect larvae as bioindicator.