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Lee, Young-June,Masami Hayashi Korean Society of Applied Entomology 2004 Journal of Asia-Pacific Entomology Vol.7 No.1
As the third part of the taxonomic review of Cicadidae (Hemiptera, Auchenorrhyncha) from Taiwan, 18 species belonging to six genera in cicadine tribes, Dundubiini (two other genera of Cicadina) and Moganiini, and a tibicinine tribe, Huechysini, are treated in this paper. A new genus, Formocicada Lee and Hayashi, and two new species, Tanna infuscata Lee and Hayashi and Formocicada taiwana Lee and Hayashi, are described. Four species are synonymized: Tanna taikosana Kato, 1925 and Tanna horiensis Kato, 1926 with Tanna taipinensis (Matsumura, 1907), and Tanna horishana Kato, 1925 and Tanna tarowanensis (Matsumura, 1927) with Tanna viridis Kato, 1925. Cryptotympana facialis (Walker, 1858), Cosmopsaltria doryca (Boisduval, 1835), and Leptopsaltria tuberosa (Signoret, 1847) are newly considered as species erroneously recorded from Taiwan. Informations on the biology and male chirpings are also provided.
Hayashi, Ichiroku*,Kiyokazu Kawada,Mayu Kurosu,Amgaa Batjargal,Tsagaanbandi Tsundeekhuu,Toru Nakamura 한국생태학회 2008 Journal of Ecology and Environment Vol.31 No.2
We describe plant biomass in the grasslands of the Mongolian steppe obtained using a quadrat sampling technique. Four sites were studied in the northeastern Mongolia located between 47°12'N and 47°40'N and 102°22'E and 112°24'E, which were typical grasslands of the steppe. Biomass, carbon and nitrogen content were determined for the plants collected from the grazed and ungarazed stands. With the measurements above, we expect to obtain information on grazing effects on the grasslands and carbon sequestration of the grassland from the air. In order to estimate the biomass without destroying the stands, we derived an equation to describe the relationship between plant biomass and v-value using plant height and species coverage within the stand. Estimated plant biomass in the ungrazed and grazed stands ranged between 108.0 g m-2 and 13.4 g m-2 and between 97.5 g m-2 and 14.1 g m-2 in late June 2005, respectively. Litter in the ungrazed and grazed stands ranged from 330.3 g m-2 to 78.4 g m-2 and from 188.0 g m-2 to 20.3 g m-2, similarly. Average carbon and nitrogen contents in plants and in litter were 43.0% and 1.9% and 33.7% and 1.4%, respectively. In study sites at Baganuur, the carbon and nitrogen content of plant materials (plant plus litter) was 118.4 g m-2 and 4.7 g m-2 on 30 June 2005. We describe plant biomass in the grasslands of the Mongolian steppe obtained using a quadrat sampling technique. Four sites were studied in the northeastern Mongolia located between 47°12'N and 47°40'N and 102°22'E and 112°24'E, which were typical grasslands of the steppe. Biomass, carbon and nitrogen content were determined for the plants collected from the grazed and ungarazed stands. With the measurements above, we expect to obtain information on grazing effects on the grasslands and carbon sequestration of the grassland from the air. In order to estimate the biomass without destroying the stands, we derived an equation to describe the relationship between plant biomass and v-value using plant height and species coverage within the stand. Estimated plant biomass in the ungrazed and grazed stands ranged between 108.0 g m-2 and 13.4 g m-2 and between 97.5 g m-2 and 14.1 g m-2 in late June 2005, respectively. Litter in the ungrazed and grazed stands ranged from 330.3 g m-2 to 78.4 g m-2 and from 188.0 g m-2 to 20.3 g m-2, similarly. Average carbon and nitrogen contents in plants and in litter were 43.0% and 1.9% and 33.7% and 1.4%, respectively. In study sites at Baganuur, the carbon and nitrogen content of plant materials (plant plus litter) was 118.4 g m-2 and 4.7 g m-2 on 30 June 2005.
Hayashi, Takahashi,Ajima, Kaori 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.2 No.e3
Chemical processing of $Nb_2O_5$coated $BaTiO_3$-composite particles was investigated with surface modification through hydrolysis of niobium ethoxide on the surface of $BaTiO_3$ particles. It was clarified from BET measurement, SEM&TEM observations and Zeta-potential that origineal $BaTiO_3$ particles were homogeneously coated or modified with niobium hydroxide particles. $Nb_2O_5(1wt%)$-coated $BaTiO_3$ bodies sintered at 1250-$1257^{\circ}C$ exhibited a rather flat temperature characteristic with dielectric constants of 2200-3000 and $tan{\delta}\; of\;{\leqq}1%$. The microstructure on $Nb_2O_5$-coated $BaTiO_3$ sintered bodies consisted of grains of several ${\mu}m which are much smaller than those of $BatiO_3$ sintered bodies, suggesting that the grain growth of $BaTiO_3$ was suppressed by Nb205 particles existing existing at the grain boundaries.
Recent Development of Science and Technology of Hard Materials in Japan
Hayashi, Koji The Korean Powder Metallurgy Institute 1998 한국분말재료학회지 (KPMI) Vol.5 No.4
Hard materials such as hardmetal, coated hardmetal, cermet, ceramics and diamond or c-BN sintered compact are a kind of grain-dispersed alloy with high volume of hard particles. These are used for cutting tools, wear-resistant tools, rock bits, high pressure apparatus, etc. The annual production in Japan is about 1.7 billion dollars (200 billion yen). This is greatly owed to the development in science and technology which has been accomplished by applying new concepts such as fine or uniform grain microstructure, orientation of crystal grains, functionally graded material, artificial lattice and coherent bonding in recent years. In this review, the development in recent years in Japan is briefly summarized.
Hayashi Nanako,Nagatsuka Haruna,Sato Mikako,Kazushige Goto 한국운동영양학회 2023 Physical Activity and Nutrition (Phys Act Nutr) Vol.27 No.2
[Purpose] Exercise-induced hemolysis, which is caused by metabolic and/or mechanical stress during exercise, is considered a potential factor for upregulating hepcidin. Intramuscular carnosine has multiple effects including antioxidant activity. Therefore, this study aimed to determine whether long-term carnosine/ anserine supplementation modulates exercise-induced hemolysis and subsequent hepcidin elevation. [Methods] Seventeen healthy male participants were allocated to two different groups: participants consuming 1,500 mg/day of carnosine/anserine supplements (n = 9, C+A group) and participants consuming placebo powder supplements (n = 8, PLA group). The participants consumed carnosine/anserine or placebo supplements daily for 30.7 ± 0.4 days. They performed an 80-running session at 70% V4 O pre-and 2peak post-supplementation. Iron regulation and inflammation in response to exercise were evaluated. [Results] Serum iron concentrations significantly increased after exercise (p < 0.01) and serum haptoglobin concentrations decreased after exercise in both groups (p < 0.01). No significant differences in these variables were observed between pre-and post-supplementation. Serum hepcidin concentration significantly increased 180 min after exercise in both groups (p < 0.01). The integrated area under the curve of hepcidin significantly decreased after supplementation (p = 0.011) but did not vary between the C+A and PLA groups. [Conclusion] Long-term carnosine/anserine supplementation does not affect iron metabolism after a single endurance exercise session.