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121.
Hisayuki Arakawa Ryo Okada Hisashi Okabe a Tsutomu Morinaga and Kazuya Taniguchi 《Fisheries Science》2000,66(3):473-480
122.
Yukio Sugimura Morihide Itano Christine D. Salud Kazuya Otsuji Hirofumi Yamaguchi 《Euphytica》1997,98(1-2):29-35
Botanical and agronomical traits were observed using 39 cultivars of coconut palms which mainly collected in the PhilipApines,
and statistically analyzed to clarify the variation between and within cultivar groups (typica, nana and javanica). Although
there were broad variations in all the traits except for several male flower characters, significant differences among three
cultivars were found in a dozen of traits. The variation within a cultivar group was higher in typica and javanica. Nana was
noted as an aggregate group, which was far distance from typica. Javanica was characterized as the intermediate group having
overlapping boundaries with other groups.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
123.
Satoshi Furukawa Yumiko Hoshikawa Kota Irie Yusuke Kuroda Kazuya Takeuchi 《Journal of toxicologic pathology》2021,34(2):157
A swim bladder tumor was detected in one scoliotic medaka aged 22 weeks. The tumor was located in the dorsal abdominal cavity, with maximum dimension of 1,850 × 1,500 µm. No swim bladder lumen was identified, and the region where the swim bladder lumen would have been located, was replaced with adipose tissues. The tumor was a non-invasive, expansile, and encapsulated solid mass with a few cysts, and comprised a homogenous population of well-differentiated, densely packed, gas glandular epithelium-like cells. The tumor mass was connected to a rete mirabile that showed a hyperplastic capillary plexus; however, the tumor cells did not invade the rete mirabile, thereby revealing that the tumor was an adenoma originating from the gas glandular epithelium of the swim bladder. Since proliferative lesions in the swim bladder have been reported in some teleosts with skeletal deformations, including medaka, the occurrence of a spontaneous swim bladder tumor in teleosts is considered to be closely associated with various types of skeletal deformation, and spinal curvature in particular. 相似文献
124.
125.
Sitka spruce (Picea sitchensis Carr.) was treated with water-soluble extractive components of pernambuco (Guilandina echinata Spreng. syn Caesalpinia echinata Lam.) by two methods: impregnation under evacuation using an aspirator and repetitive surface application using a brush. The influence of these treatments on the vibrational properties were examined. The loss tangent (tan ) of the impregnated specimen decreased, up to nearly a half of its original value, with increasing weight gain. It is suggested that the decrease in tan results from impregnation of the extractive components into the amorphous region of cell walls, forming secondary bonds between matrix substances. The surface application of the extractive components, on the other hand, hardly brought about the desirable change in vibrational properties.Part of this work was presented at the 47th annual meeting of the Japan Wood Research Society, Kochi, April 1997, and the 48th annual meeting of the Japan Wood Research Society, Shizuoka, April 1998 相似文献
126.
Anzai M Nishiwaki M Yanagi M Nakashima T Kaneko T Taguchi Y Tokoro M Shin SW Mitani T Kato H Matsumoto K Nakagata N Iritani A 《The Journal of reproduction and development》2006,52(5):601-606
Development of assisted reproductive technologies is necessary to obtain fertilized oocytes in a subfertile transgenic mouse strain. Here, we showed the application of laser-assisted drilling of the zona pellucida to in vitro fertilization of cryopreserved mouse oocytes with sperm from subfertile transgenic mice (C57BL/6N-Tg(UCP/FAD2)U8 strain). After cryopreservation by vitrification, the recovery and survival rates of the zona-drilled mouse oocytes were 97% (97/100) and 94% (91/97), respectively. In vitro fertilization of the cryopreserved zona-drilled mouse oocytes with sperm from the subfertile transgenic mice was greatly facilitated (60%, 55/91) compared to that of the cryopreserved zona-intact mouse oocytes (11%, 81/768). In vitro fertilized embryos that developed to the 2-cell stage were again cryopreserved by vitrification, and after warming they were transferred into recipient females. Subsequently, six viable offspring were delivered, and all were confirmed to be transgenic mice. These results indicate that laser-assisted zona drilling of oocytes combined with cryopreservation by vitrification may be a useful approach for large-scale production of in vitro fertilized embryos for managing transgenic mouse strains with reproductive disabilities such as subfertile sperm. 相似文献
127.
Yousuke Taoka Hiroto Maeda Jae-Yoon Jo Min-Jee Jeon Sungchul C. Bai Won-Jae Lee Kazuya Yuge Shunsuke Koshio 《Fisheries Science》2006,72(2):310-321
ABSTRACT: Effects of probiotics on growth, stress tolerance and non-specific immune response in Japanese flounder Paralichthys olivaceus were evaluated in a closed recirculating system. Survival and growth of flounder treated by supplying commercial probiotics either in the diet (the probiotic diet group), or into the rearing water (the water supply group), were higher compared to the untreated group (the control group). Water quality parameters, pH, NH4 -N, NO2 -N and PO4 -P showed lower concentration in the probiotic diet group compared with the control group and the supply group. Plasma lysozyme activity in the probiotic diet group and the water supply group was significantly higher ( P < 0.05) than that in the control group. In heat shock stress tests, flounder in the probiotics-treated groups showed greater heat tolerance (measured by 50% lethal time, LT50) than the control group. Pathogen challenge tests with Vibrio anguillarum (2 × 107 c.f.u./mL) resulted in significantly higher survival in the probiotics-treated groups than the control group. Results indicated that probiotics supplied in the rearing water and the diet of fish enhanced the stress tolerance and the non-specific immune system of Japanese flounder, providing them a higher resistance against stress conditions and pathogens. 相似文献
128.
Pernambuco (Guilandina echinata Spreng. syn Caesalpinia echinata Lam.), which has been used for a material of violin bows, was compared with substitutable wood species from the viewpoint of processing properties and durability. The properties required for bow material are discussed. The shearing strength of pernambuco was higher than that of the other wood species at the same specific gravity. High shearing strength seems to be effective for preventing damage to the head (top part) of the bow. The presence of extractives affects the thermal softening of wood material, but ease of handling and permanent retention of form are not particularly superior for pernambuco, although it does have a high extractives content. A peculiarly low loss tangent (tan S) of pernambuco can probably be attributed to the large amount of extractives, rather than the mean microfibril angle.Part of this report was presented at the 46th Annual Meeting of the Japan Wood Research Society in Kumamoto, April 1996. 相似文献
129.
Kamata K Yonehara K Sumida Y Yamaguchi K Hikichi S Mizuno N 《Science (New York, N.Y.)》2003,300(5621):964-966
Epoxides are an important class of industrial chemicals that have been used as chemical intermediates. Catalytic epoxidation of olefins affords an interesting production technology. We found a widely usable green route to the production of epoxides: A silicotungstate compound, [gamma-SiW10O34(H2O)2]4-, is synthesized by protonation of a divacant, lacunary, Keggin-type polyoxometalate of [gamma-SiW10O36]8- and exhibits high catalytic performance for the epoxidation of various olefins, including propylene, with a hydrogen peroxide (H2O2) oxidant at 305 kelvin. The effectiveness of this catalyst is evidenced by >/=99% selectivity to epoxide, >/=99% efficiency of H2O2 utilization, high stereospecificity, and easy recovery of the catalyst from the homogeneous reaction mixture. 相似文献