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排序方式: 共有325条查询结果,搜索用时 218 毫秒
81.
Jianzhong Huang Tsunehiro Aki Kazutaka Hachida Toshihiro Yokochi Seiji Kawamoto Seiko Shigeta Kazuhisa Ono Osamu Suzuki 《Journal of the American Oil Chemists' Society》2001,78(6):605-610
More than 300 strains of microorganisms producing polyunsaturated fatty acids (PUFA) were newly isolated from coastal seawater
in the Seto Inland Sea and around Iriomote Island, Japan, by the baiting method. The profiles of PUFA from docosahexaenoic
acid (DHA)-producing strains could be classified into four types. A strain, named KK17-3, was chosen for further study owing
to its high DHA content (52.1% of total fatty acid) and wide range of PUFA (76.1%) including arachidonic, eicosapentaenoic,
and docosapentaenoic acids as well as DHA. Glucose and tryptone were the optimal carbon and nitrogen sources, respectively,
in a medium with salinity at 75% that of seawater. The PUFA contents in polar lipids (22.1% of total lipid), in which the
DHA content was 39.3%, were higher than those in neutral lipids and glycolipids. Molecular phylogenetic analysis of 18S rRNA
gene sequences showed KK17-3 to be a thraustochytrid. It also was observed to possess a life cycle composed of vegetative
cells without successive bipartition, zoosporangium, and zoospore stage. Classification by the chemotaxonomic criterion based
on PUFA compositions also supported this assignment. 相似文献
82.
Tomonao Hosokai Masaki Kando Hideki Dewa Hideyuki Kotaki Syuji Kondo Syuhei Kanazawa Noboru Hasegawa Kazuhiko Horioka Kazuhisa Nakajima 《Electrical Engineering in Japan》2001,136(3):19-27
We have proposed the optical guiding of intense laser pulses by fast Z-pinch for channel-guided laser wakefield acceleration (LWFA). The method has been developed based on capillary discharge-pumped X-ray laser technique. A discharge through preionized helium gas driven by a current of 4.8 kA with a rise time of 15 ns proved able to produce a uniform guiding channel with good reproducibility, less than the time jitter of 1.8 ns. The observed guiding channel formation process was corroborated by 1D-MHD simulation. With this new guiding method, an intense Ti-sapphire laser pulse (λ = 790 nm, 2.2 TW, 90 fs, 1 × 1017 W/cm2) was transported through the channel over a distance of 2 cm, corresponding to 12.5 times the Rayleigh length. © 2001 Scripta Technica, Electr Eng Jpn, 136(3): 19–27, 2001 相似文献
83.
Aluminum has been reactively infiltrated into a molybdenum disilicide preform with relative densities of 40% and 85%. The resultant compact is found to contain Mo(Al,Si)2 particles surrounded by aluminum metal; 14 to 18 at.% of aluminum reacted with MoSi2 irrespective of the infiltration temperature and time. 相似文献
84.
Yuko Miyake Kazuhisa Yokomizo Narihide Matsuzaki 《Journal of the American Oil Chemists' Society》1998,75(9):1091-1094
High-resolution nuclear magnetic resonance (NMR) spectroscopy provides useful data for analyzing fatty acid compositions of
edible vegetable oils. Quantitation of each fatty acid was carried out by evaluation of particular peaks. According to the
1H NMR method, terminal methyl protons, divinyl protons, and allyl protons are useful to calculate linolenic acid, linoleic
acid, and oleic acid, respectively. The ω-2 carbon, divinyl carbon, and allylic carbons were used for calculation of these
acids by the 13C NMR method. Compositional results obtained by NMR coincided well with those of the conventional gas chromatography (GC)
method. Results from 13C NMR were in better agreement with those from GC than were the results obtained by the 1H NMR method. 相似文献
85.
86.
Kazuhisa Mitsuda Richard L. Kelley Kevin R. Boyce Gregory V. Brown Elisa Costantini Michael J. DiPirro Yuichiro Ezoe Ryuichi Fujimoto Keith C. Gendreau Jan-Willem den Herder Akio Hoshino Yoshitaka Ishisaki Caroline A. Kilbourne Shunji Kitamoto Dan McCammon Masahide Murakami Hiroshi Murakami Mina Ogawa Takaya Ohashi Atsushi Okamoto Stéphane Paltani Martin Pohl F. Scott Porter Yoichi Sato Keisuke Shinozaki Peter J. Shirron Gary A. Sneiderman Hiroyuki Sugita Andrew Szymkowiak Yoh Takei Toru Tamagawa Makoto Tashiro Yukikatsu Terada Masahiro Tsujimoto Cor de Vries Noriko Y. Yamasaki 《Journal of Low Temperature Physics》2012,167(5-6):795-802
The science and an overview of the Soft X-ray Spectrometer onboard the STRO-H mission are presented. The SXS consists of X-ray focusing mirrors and a microcalorimeter array and is developed by international collaboration lead by JAXA and NASA with European participation. The detector is a 6×6 format microcalorimeter array operated at a cryogenic temperature of 50 mK and covers a 3′×3′ field of view of the X-ray telescope of 5.6 m focal length. We expect an energy resolution better than 7 eV (FWHM, requirement) with a goal of 4 eV. The effective area of the instrument will be 225 cm2 at 7 keV; by a factor of about two larger than that of the X-ray microcalorimeter on board Suzaku. One of the main scientific objectives of the SXS is to investigate turbulent and/or macroscopic motions of hot gas in clusters of galaxies. 相似文献
87.
Curtin CM Cunniffe GM Lyons FG Bessho K Dickson GR Duffy GP O'Brien FJ 《Advanced materials (Deerfield Beach, Fla.)》2012,24(6):749-754
The ability of nano-hydroxyapatite (nHA) particles developed in-house to act as non-viral delivery vectors is assessed. These nHA particles are combined with collagen to yield bioactive, biodegradable collagen nano-hydroxyapatite (coll-nHA) scaffolds. Their ability to act as gene-activated matrices for BMP2 delivery is demonstrated with successful transfection of mesenchymal stem cells (MSCs) resulting in high calcium production. 相似文献
88.
Yamasaki T Aki T Shinozaki M Taguchi M Kawamoto S Ono K 《Journal of Bioscience and Bioengineering》2006,102(4):323-327
The industrial production of barley shochu, a distilled alcoholic beverage, results in distillery waste that is currently incinerated or disposed of in landfills, causing environmental pollution. The supernatant of distillery waste contains organic matter such as proteins ( approximately 2.5%) and amino acids ( approximately 0.2%). This study demonstrates that the utilization of distillery wastewater as a sole nitrogen source enables a marine thraustochytrid, Schizochytrium sp. strain KH105, to propagate and accumulate valuable lipids including docosahexaenoic acid (DHA) and astaxanthin. Under optimized culture conditions, the highest DHA and astaxanthin yields were obtained at 3.4 g/l and 7.7 mg/l, respectively, after 4 or 5 d of cultivation in a 3-l jar fermentor. The chemical oxygen demand of the wastewater was reduced by 35%. About 67% of crude protein content and 85% of total free amino acid content also decreased in the culture supernatant. The thraustochytrid therefore serves to upgrade the distillery by-product to one containing value-added lipids for functional foods as well as to regulate the environmental contamination. 相似文献
89.
For the replacement of old sequential controllers for plants by modern programmable controllers (PCs), we have developed the sequential control program automatic inductive regeneration (SPAIR) method and system from input–output signals and action specifications of a target controller. However, this method cannot regenerate the logic included in the interior coils. Therefore, we propose an efficient interior coil logic inference method for SPAIR using the Logic Parts Attaching Algorithm. In this method, the target logic of the interior coil is acquired by the selective attachment of logic parts. We confirmed its effectiveness through the application of the method to some original controllers including interior logic. © 2001 Scripta Technica, Electr Eng Jpn, 137(1): 42–47, 2001 相似文献
90.