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111.
V.P. Budaev S. Takamura Y. Kikuchi Y. Uesugi N. Ohno 《Czechoslovak Journal of Physics》2003,53(10):863-868
The spatial and temporal characteristics of the turbulence in the inboard and outboard scrape-off layer (SOL) of tokamak HYBTOK-II have been studied using poloidal probe array. Bursty behaviour with intermittent bursts was observed for both outboard and inboard SOL. In the inboard (high field side), high level of density fluctuations has been observed. The fluctuations in the high field side and low field side are identical in statistics that is non-Gaussian one. 相似文献
112.
Kei Zaitsu Izuru Miyawaki Kiyoko Bando Hiroshi Horie Noriaki Shima Munehiro Katagi Michiaki Tatsuno Takeshi Bamba Takako Sato Akira Ishii Hitoshi Tsuchihashi Koichi Suzuki Eiichiro Fukusaki 《Analytical and bioanalytical chemistry》2014,406(5):1339-1354
The metabolic profiles of urine and blood plasma in drug-addicted rat models based on morphine (MOR), methamphetamine (MA), and cocaine (COC)-induced conditioned place preference (CPP) were investigated. Rewarding effects induced by each drug were assessed by use of the CPP model. A mass spectrometry (MS)-based metabolomics approach was applied to urine and plasma of MOR, MA, and COC-addicted rats. In total, 57 metabolites in plasma and 70 metabolites in urine were identified by gas chromatography–MS. The metabolomics approach revealed that amounts of some metabolites, including tricarboxylic acid cycle intermediates, significantly changed in the urine of MOR-addicted rats. This result indicated that disruption of energy metabolism is deeply relevant to MOR addiction. In addition, 3-hydroxybutyric acid, l-tryptophan, cystine, and n-propylamine levels were significantly changed in the plasma of MOR-addicted rats. Lactose, spermidine, and stearic acid levels were significantly changed in the urine of MA-addicted rats. Threonine, cystine, and spermidine levels were significantly increased in the plasma of COC-addicted rats. In conclusion, differences in the metabolic profiles were suggestive of different biological states of MOR, MA, and COC addiction; these may be attributed to the different actions of the drugs on the brain reward circuitry and the resulting adaptation. In addition, the results showed possibility of predict the extent of MOR addiction by metabolic profiling. This is the first study to apply metabolomics to CPP models of drug addiction, and we demonstrated that metabolomics can be a multilateral approach to investigating the mechanism of drug addiction. 相似文献
113.
Nabetani Y Takamura H Hayasaka Y Shimada T Takagi S Tachibana H Masui D Tong Z Inoue H 《Journal of the American Chemical Society》2011,133(43):17130-17133
A novel photoactivated artificial muscle model unit is reported. Here we show that organic/inorganic hybrid nanosheets reversibly slide horizontally on a giant scale and the interlayer spaces in the layered hybrid structure shrink and expand vertically by photoirradiation. The sliding movement of the system on a giant scale is the first example of an artificial muscle model unit having much similarity with that in natural muscle fibrils. In particular, our layered hybrid molecular system exhibits a macroscopic morphological change on a giant scale (~1500 nm) relative to the molecular size of ~1 nm by means of a reversible sliding mechanism. 相似文献
114.
Measurements of electrical resistivity after low temperature fast neutron irradiation are made for amorphous Pd80Si20 and Pd80Ni2Sl18 and then Pd80Si20 annealed at 230°C and 360°C, and the isochronal annealing curves are obtained. The resistivity increase of Pd80Si20 annealed at 360°C is about 10 times larger than that of amorphous alloys and no defined annealing stage is observed in amorphous alloys and Pd80Si20 annealed at 360°C. For amorphous Pd80Si20, about 60% of the resistivity increase by irradiation remains after annealing up to room temperature and these are discussed by the structural relaxation. 相似文献
115.
Yukiko Makino Yasuteru Urano Kiyoko Kaneko 《Rapid communications in mass spectrometry : RCM》2019,33(11):995-1005
116.
117.
Hiroyoshi Takamura Yuichiro Kadonaga Chunguang Han Isao Kadota 《Tetrahedron letters》2009,50(8):863-7576
Symbiodinolide (1) is a polyol macrolide with a molecular weight of 2859 mu. As one of the degradation reactions, cross-metathesis of 2, which is a methyl ester of 1, with ethylene was performed to give the C33-C42 degraded fragment 4. The absolute configuration of 4 was estimated to be (36S,40S) by Mosher method. Stereoselective synthesis of 4 was achieved in 14 steps from l-aspartic acid. Synthetic bis-(S)- and (R)-MTPA esters exhibited the spectroscopic data identical with those of bis-(S)- and (R)-MTPA esters derived from the degraded fragment 4. Thus, the absolute stereochemistry of 4 was elucidated to be (36S,40S). 相似文献
118.
Takaaki Sakai Hiroshige Matsumoto Reiri Yamamoto Takao Kudo Sachio Okada Masato Watanabe Shin-ichi Hashimoto Hitoshi Takamura Tatsumi Ishihara 《Ionics》2009,15(6):665-670
An electrode design with no use of three-phase boundary was investigated using palladium electrode. The hydrogen evolution
rate of the palladium electrode cell using SrZr0.9Y0.1O3 − α
electrolyte followed Faraday’s law up to 180 mA cm−2, and the anode and cathode overpotentials were significantly lower than those of a platinum electrode cell, suggesting that
the palladium electrode is effective to improve the performance of the hydrogen-pumping cell using SrZrO3-based electrolyte. The rate-determining step (RDS) for electrode reaction was also investigated by changing the electrode
morphology and hydrogen partial pressure, and it was suggested that the RDS of the anode is a reaction at electrode/electrolyte
interface. 相似文献
119.
The effects of a finite-bandwidth pump on the parametric instabilities near the lower-hybrid frequency are investigated experimentally. The incoherency of the pump wave hardly changes the threshold, while it enhances the ion heating. 相似文献
120.