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排序方式: 共有2205条查询结果,搜索用时 84 毫秒
81.
Alkhateib Y. Gaafar Hirofumi Yamashita Indah Istiqomah Yasuhiko Kawato Kanae Ninomiya Abdelgayed Younes Toshihiro Nakai 《Microscopy research and technique》2020,83(8):979-987
The practical difficulty of parenteral application of fish vaccines against devastating fish diseases diverted the interest toward oral vaccination. Search for effective methods to enhance the oral uptake of viral and bacterial vaccines is continuing. The current research focus on a new role of mucosal fish vaccine adjuvants inducing the antigen uptake by enhancing vascularity or increasing intestinal permeability. Some inflammatory substances cause reversible pathology to the intestinal epithelium, which could be employed for the transepithelial passage of vaccine particles. The natural inflammatory substances used were capsaicin, piperine, and okadaic acid as 1 mg, 2 mg, and 1 μg/fish, respectively. Two inactivated vaccines were used as antigens to test the effect of these inflammatory substances in two different fish hosts. Tested vaccines were inactivated redspotted grouper nervous necrosis virus vaccine in sevenband grouper (Epinephelus septemfasciatus) and inactivated Edwardsiella tarda vaccine in red sea bream (Pagrus major) fish models. The inflammatory substances and each vaccine were anally intubated to fish. Capsaicin proved to be effectively aiding the transepithelial passage of vaccine particles more than piperine, while okadaic acid had no detectable effect. 相似文献
82.
Shinobu Mukasa Tsunehiro Maehara Shinfuku Nomura Hiromichi Toyota Ayato Kawashima Yoshiaki Hattori Yukio Hashimoto Hiroshi Yamashita 《International Journal of Heat and Mass Transfer》2010,53(15-16):3067-3074
Plasma was generated in water by irradiation at high frequency of 13.56 MHz, and the behavior of bubbles including the plasma was observed by a high-speed camera. The generation pattern of the bubbles was classified into four types according to liquid temperature and supplied power. Conducting the simulation, the maximum temperature in the bubble was found to be from 3500 K to 4300 K, and the decomposition of water molecule occurred. The gas in the bubble was found to become high ratio of hydrogen. The phenomenon can be regarded as a film boiling of exceptionally high heat flux. 相似文献
83.
Pybox–CaCl2 was found to be an efficient chiral catalyst for asymmetric 1,4-addition reactions of 1,3-dicarbonyl compounds with nitroalkenes, affording γ-nitro carbonyl compounds in high yields with high enantioselectivities. The reactions proceeded smoothly even in air, and were successfully applied to a continuous flow system. 相似文献
84.
Kiyoharu Nakagawa Hirokazu Oda Akira Yamashita Masahiro Okamoto Yoichi Sato Hidenori Gamo Mikka Nishitani-Gamo Kazuyuki Ogawa Toshihiro Ando 《Journal of Materials Science》2009,44(1):221-226
We developed a novel spherical carbon material. The spherical carbon is composed of a high density of carbon nanotubes or
nanofilaments, and includes an oxidized diamond particle as a core. Syntheses of this carbon in high volume with high selectivity
may be possible. It is expected that this carbon will be useful as a catalyst material for fuel cells, electric double-layer
capacitors, etc. 相似文献
85.
86.
Hemmi H Yamashita S Nakayama T Nishino T 《Journal of Bioscience and Bioengineering》2002,93(5):515-518
It is known that 1-deoxy-D-xylulose taken up by Escherichia coli is used as the precursor of the compounds synthesized via the non-mevalonate pathway, such as isoprenoids, probably after conversion into 1-deoxy-D-xylulose 5-phosphate. In this report, we show that a novel phospho(enol) pyruvate-dependent phosphotransferase system catalyzes the uptake and phosphorylation of 1-deoxy-D-xylulose. 相似文献
87.
A coterie is a set of subsets (called quorums) of the processes in a distributed system such that any two quorums intersect with each other and is mainly used to solve the mutual exclusion problem in a quorum-based algorithm. The choice of a coterie sensitively affects the performance of the algorithm and it is known that nondominated (ND) coteries achieve good performance in terms of criteria such as availability and load. On the other hand, grid coteries have some other attractive features: 1) a quorum size is small, which implies a low message complexity, and 2) a quorum is constructible on the fly, which benefits a low space complexity. However, they are not ND coteries unfortunately. To construct ND coteries having the favorite features of grid coteries, we introduce the transversal merge operation that transforms a dominated coterie into an ND coterie and apply it to grid coteries. We call the constructed ND coteries ND grid coteries. These ND grid coteries have availability higher than the original ones, inheriting the above desirable features from them. To demonstrate this fact, we then investigate their quorum size, load, and availability, and propose a dynamic quorum construction algorithm for an ND grid coterie. 相似文献
88.
Y. Ukai T. Ohyama L. Fennell Y. Kato M. Paukshto P. Smith O. Yamashita S. Nakanishi 《Journal of the Society for Information Display》2005,13(1):17-24
Abstract— A thin‐crystalline‐film (TCF) polarizer has been developed which can be used internally in liquid‐crystal‐display cells. Based on this material, a manufacturing process has been developed for the fabrication of monochrome LCDs with internal polarizers. A new TCF polarizer material and coating equipment, developed to realize a high‐performance color TFT‐LCD, are discussed. 相似文献
89.
We present a short overview of the critical temperature correlations with different parameters for low and high T c superconductors. The overview underlines the importance of crystalline structure in determining the critical temperature value. The structure of copper-based superconductors is studied in comparison with low-temperature superconductors and a new correlation of the transition temperature is found. Namely, the layered structure, more exactly a certain distribution of the mass of the ions along the c-axis is the key factor in determining the “intrinsic” critical temperature, parameter introduced by Kresin et al. [4]. 相似文献
90.
Nutritional state modulates the cell size of the fission yeast Schizosaccharomyces pombe, such that cells grown in rich medium are larger in size than those in poor medium. This signal is transduced partly through the cyclic AMP-dependent protein kinase cascade. However, little is known about how cyclic AMP interacts with the central cell cycle machinery, Cdc2, the cyclin-dependent kinase that induces mitosis. We show here that cyclic AMP regulates mitosis and cell size, in part, through regulation of protein stability of the Cdc2-activating phosphatase, Cdc25. However, our analysis demonstrates that cyclic AMP can negatively regulate mitosis independently of dephosphorylation of Cdc2 at Tyr(15). 相似文献