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排序方式: 共有572条查询结果,搜索用时 15 毫秒
1.
We report 34 cases of tsutsugamushi disease seen from 1989 to 1993 at Yagi Clinic, northern Osumi, Kagoshima Prefecture. Nineteen patients (55.9%) showed the highest antibody titers against the Kawasaki strain Orientia tsutsugamushi (Ot) and 13 (38.2%) against the Kuroki strain Ot. It is suggested that two antigenic types (Kawasaki and Kuroki) of Ot were distributed in Kagoshima Prefecture, and the Kawasaki type Ot more or less dominates Kuroki type Ot. There was no difference in clinical features between the two groups of patients. 相似文献
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Nobuo Ishizawa Atsushi Saiki Takeshi Yagi Nobuyasu Mizutani Masanori Kato 《Journal of the American Ceramic Society》1986,69(2):18-C-
Crystals of yttria partially stabilized zirconia were grown by the arc-image floating-zone technique and studied by transmission electron microscopy. Crystals annealed at 1700°C consist of tetragonal precipitates and a cubic matrix. The platelike domains in a precipitate are twin-related tetragonal variants stacked alternately parallel to the (011) twin plane. The axial relations between the tetragonal precipitate and the cubic matrix are [100]tetragonal |[100]cubic , [011]tetragonal |[011]cubic . 相似文献
4.
Reaction rates in the Mg2Ni---H2 system are still unclear, although they are needed for the process/optimization of hydrogen storage reactors. In this article, the rates of hydrogen absorption and desorption of the magnesium nickel alloy were investigated at different pressures up to 2.0 MPa using a constant-temperature thermogravimetric method. The powder of the alloy was microencapsulated with copper to improve the alloy properties (such as cycling strength) as a pretreatment. In the experiments, weight changes of the smallest amount possible of samples were monitored with the help of an ultra-accurate thermobalance, in order to avoid changes of the sample temperature due to the heat of the reaction. The reaction curves obtained revealed unique dependence of temperature and pressure and influence of thermal hysterisis. It is also possible that hydrogen-absorption and-desorption rates of this hydrogen storage alloy are expressed by the rate equation of first-order reversible reaction. 相似文献
5.
Takeshi Yagi Kazuo Shinozaki Nobuo Ishizawa Nobuyasu Mizutani Masanori Kato Akihiko Tsuge 《Journal of the American Ceramic Society》1988,71(7):334-C
The thermal diffusivity of AlN ceramics was significantly decreased by the addition of SiO2 . The AlN ceramics with 4 wt% SiO2 could not be densified by pressureless sintering in the temperature range 1400° to 1800°C. The thermal diffusivity of these samples was very low because of their porous structure. The AlN ceramics containing 2, 4, and 8 wt% SiO2 were densified by hot-pressing and also had low thermal diffusivity. In these samples, the grains of the 27R polytype that resulted from the reaction between AlN and SiO2 were dispersed, obstructing the conduction of heat. The relation between the amount of 27R polytype and the thermal diffusivity of the AlN ceramics was determined. 相似文献
6.
Electrochemical Ni-Mo alloying of the surface of a nickel substrate was investigated using alternating pulsed electrolysis in an aqueous solution containing only molybdate ions (MoO42−) as a metal ion component. In this electrochemical process, the nickel substrate was slightly dissolved during the anodic pulses, providing nickel ions into the solution in the vicinity of the substrate, while Ni and Mo were both electrodeposited on the substrate surface during the subsequent cathodic pulses. Through the optimization of anodic and cathodic conditions independently based on a set of direct-current electrolysis data, amorphous Ni-Mo alloy layers were found to be formed at the surface of the nickel substrate by the alternating pulsed electrolysis using the MoO42− solution of pH 3.0-5.0. The conditions for Ni-Mo alloy formation were discussed in terms of the dissolving regime of ionic species in the electrolytes determined by an equilibrium calculation. 相似文献
7.
Residues important for the function of a multihelical DNA binding domain in the new transcription factor family of Cam and Tet repressors 总被引:5,自引:0,他引:5
Aramaki Hironori; Yagi Naoto; Suzuki Masashi 《Protein engineering, design & selection : PEDS》1995,8(12):1259-1266
We report that some prokaryotic repressors including CamR andTetR belong to the same family. CamR and TetR bind to DNA usinga multihelical DNA binding domain (DBD) at the N-termini ofthe proteins, while the C-termini are important for regulatingthe DNA binding in a manner dependent on their co-factors (camphorfor CamR, tetracycline for TetR). In all, 11 important aminoacid positions have been identified in the CamR DBD by the systematicsubstitution of residues by Ala. Of the 11 positions, 10 areeither buried in the core, and thus important for creating thehydrophobic environment, or exposed on the surface, and thusimportant for binding to DNA. The eleventh residue, Gly, seemsto be important for a loop structure. The DNA binding mode ofthis type of DBD and a general mechanism of regulating theirDNA binding are discussed in reference to the crystal structureof TetR [Hinrichs et al., (1994) Science, 264, 418420]. 相似文献
8.
Bassam?HammoEmail authorView authors OrcID profile Sane?Yagi Omaima?Ismail Mohammad?AbuShariah 《Language Resources and Evaluation》2016,50(4):839-861
This paper presents a historical Arabic corpus named HAC. At this early embryonic stage of the project, we report about the design, the architecture and some of the experiments which we have conducted on HAC. The corpus, and accordingly the search results, will be represented using a primary XML exchange format. This will serve as an intermediate exchange tool within the project and will allow the user to process the results offline using some external tools. HAC is made up of Classical Arabic texts that cover 1600 years of language use; the Quranic text, Modern Standard Arabic texts, as well as a variety of monolingual Arabic dictionaries. The development of this historical corpus assists linguists and Arabic language learners to effectively explore, understand, and discover interesting knowledge hidden in millions of instances of language use. We used techniques from the field of natural language processing to process the data and a graph-based representation for the corpus. We provided researchers with an export facility to render further linguistic analysis possible. 相似文献
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Yasushi Yagi Wataru Nishi Nels Benson Masahiko Yachida 《Machine Vision and Applications》2003,14(2):112-120
Described here is a method for estimating rolling and swaying motions of a mobile robot using optical flow. We have proposed
an image sensor with a hyperboloidal mirror for the vision-based navigation of a mobile robot. Its name is HyperOmni Vision.
The radial component of optical flow in HyperOmni Vision has a periodic characteristic. The circumferential component of optical
flow has a symmetric characteristic. The proposed method makes use of these characteristic to estimate robustly the rolling
and swaying motion of the mobile robot.
Correspondence to: Y. Yagi e-mail: y-yagi@sys.es.osaka-u.ac.jp 相似文献