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排序方式: 共有427条查询结果,搜索用时 0 毫秒
51.
Takashi MINAMI Shohei ARAI Naoki KENMOCHI Hiroaki YASHIRO Chihiro TAKAHASHI Shinji KOBAYASHI Tohru MIZUUCHI Shinsuke OHSHIMA Satoshi YAMAMOTO Hiroyuki OKADA Kazunobu NAGASAKI Yuji NAKAMURA Kiyoshi HANATANI Shigeru KONOSHIMA Fumimichi SANO 《等离子体科学和技术》2013,(3):240-243
A new high repetition rate Nd:YAG Thomson scattering system is developed for the Heliotron J helical device.A main purpose of installing the new system is the temporal evolution measurement of a plasma profile for improved confinement physics such as the edge transport barrier (H-mode) or the internal transport barrier of the helical plasma.The system has 25 spatial points with ~10mm resolution.Two high repetition Nd:YAG lasers (>550mJ@ 50Hz) realize the measurement of the time evolution of the plasma profile with ~10ms time intervals.Scattered light is collected by a large concave mirror (D=800 mm,f/2.25) with a solid angle of ~100 mstr and transferred to interference filter polychromators by optical fiber bundles in a staircase form.The signal is amplified by newly designed fast preamplifiers with DC and AC output,which reduces the low frequency background noise.The signals are digitized with a multi-event QDC,fast gated integrators.The data acquisition is performed by a VME-based system operated by the CINOS. 相似文献
52.
Determining whether there is evidence of underutilization of outpatient mental health care by Department of Defense (DoD) beneficiaries relative to the general population is the purpose of this study. It analyzes data from the 1994-1995 DoD Health Beneficiary Survey and compares the mental health status and usage rates of active duty members and their families with benchmark levels found in the general population. Although the mental health status for the DoD beneficiary population was found to be generally the same as that of the general U.S. population within gender categories, gender-specific usage rates of mental health services of DoD beneficiaries in the groups examined were well below rates recorded for the general population. The concept of psychological readiness is also introduced. Several recommendations for increasing access to mental health care are presented. 相似文献
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Natsuko Sakai Tatsuya Kawada Harumi Yokokawa Masayuki Dokiya Isao Kojima 《Journal of the American Ceramic Society》1993,76(3):609-616
Investigations have been made on the low-temperature sinterability of calcium-doped lanthanum chromites which are to be used as interconnectors in solid oxide fuel cells (SOFCs). Nominally chromium deficient lanthanum calcium chromites (La0.7 Ca0.3 Cr1 -y O3 , y = 0.02) were found to be sinterable to 94% theoretical density at 1573 K in air, whereas no densification was observed for samples with y = 0. The two-step shrinkage process suggests a liquid phase sintering mechanism with calcium oxychromates playing an important role as the liquid phase. After sintering at 1573 K, calcium-rich substances remained at grain boundaries. 相似文献
56.
KM Kim T Kawada K Ishihara K Inoue T Fushiki 《Canadian Metallurgical Quarterly》1998,62(12):2444-2445
We investigated the endurance swimming capacity of mice injected with CAP antagonist (capsazepine). The increase of endurance swimming capacity by the administration of CAP was significantly suppressed by the injection of capsazepine. At the same time, serum adrenaline secretion, which was induced by CAP, was depressed by capsazepine. These findings suggested that the increase in endurance swimming capacity by CAP was mediated by the CAP receptor. 相似文献
57.
G.E. Abdelrahman Shohei Kawabe Fumio Tatsuoka Yoshimichi Tsukamoto 《Soils and Foundations》2008,48(4):479-494
The rate-dependency of the stress-strain behavior of EPS (Expanded Polystyrene) geofoam with densities of 19.3 and 28.0 kg/m3 was investigated by performing unconventional unconfined compression tests. A set of monotonic loading (ML) tests were performed at different constant values of vertical (axial) strain rate, εv. The εv value was stepwise changed many times and several sustained loading (SL) tests were performed during otherwise ML at a constant εv in other tests. A number of SL tests were performed during global unload and reload cycles to infer the stress-strain relation when εv=0. The elastic properties were evaluated by applying minute unload/reload cycles during otherwise ML. The rate-dependent stress-strain behaviour observed in these tests was described by an elasto-viscoplastic model (i.e., a non-linear three-component model), for which the vertical (axial) stress, σv, consists of inviscid and viscous components, σvf and σvv, while εv consists of elastic and irreversible components, εve and εvir. It is shown that the viscous property of EPS geofoam is of Isotach type in that, under the loading conditions where εvir is always positive, the current σvv value is a unique function of instantaneous εvir and εvir, therefore the strength increases with εv. This viscous property was quantified based on the test results and incorporated into the model. The rate-dependent stress-strain behaviour, including the creep behaviour, observed in the experiment is simulated very well by the proposed model. In particular, the fact that the creep strain becomes significant when the sustained σv value becomes larger than the inviscid yield vertical stress is well simulated. 相似文献
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Although modified ultrafiltration after pediatric open heart operations is used by several clinical centers, the risk of complications is a matter of concern. This report describes a simple, reliable, and reproducible technique of speed-controlled venovenous modified ultrafiltration. 相似文献
60.
H Shin K Kawada R Yozu T Suzuki M Nagumo T Inoue 《Canadian Metallurgical Quarterly》1989,9(5):441-446
Between February, 1981, and April, 1989, 20 patients underwent surgical treatment of thoracoabdominal aortic aneurysms. Most of the patients were operated under temporary external bypass. For Group I and III aneurysms without reconstruction of renal arteries, a modified Crawford's graft inclusion technique was employed to shorten abdominal visceral ischemic time. This modification consists of (1) using adjuncts to perfuse the distal aorta during aortic clamp, (2) starting the first anasistomosis from the distal end of the graft, and (3) shifting the distal aortic clamp on the graft after completing the anastomosis in order to restore abdominal visceral circulation as soon as possible. For Group III and IV aneurysms with reconstruction of renal arteries as well as celiac and superior mesenteric arteries, a modified DeBakey's procedure was employed. This modification consists of (1) using the spiral opening method, (2) doing end-to-end anastomosis at the proximal aortic site, and (3) maintaining the circulation of abdominal organs and spinal cord by using adjuncts during the anastomosis of the proximal end. There were one operative death and two hospital deaths. Paraplegia developed in two cases, one of which was a ruptured case. Renal dysfunction was not found in any case. The survivors were followed from 5 to 103 months, and there was no late death. The results suggest that our modified procedures for thoracoabdominal aortic aneurysms are useful and reliable ones. 相似文献