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排序方式: 共有518条查询结果,搜索用时 15 毫秒
41.
Max I. Kanovich Mitsuhiro Okada Andre Scedrov 《Electronic Notes in Theoretical Computer Science》1998,16(1):42-59
Abstract
Real-time finite-state systems may be specified in linear logic by means of linear implications between conjunctions of fixed finite length. In this setting, where time is treated as a dense linear ordering, safety properties may be expressed as certain provability problems. These provability problems are shown to be in pspace. They are solvable, with some guidance, by finite proof search in concurrent logic programming environments based on linear logic and acting as sort of model-checkers. One advantage of our approach is that either it provides unsafe runs or it actually establishes safety. 相似文献42.
Magnetic properties of metal layer deposited by reduction of metal ions contained in polymer with applying magnetic field 总被引:5,自引:0,他引:5
Mitsuhiro Shibata Hiroshi Beniya Ryutoku Yosomiya Takatoshi Yosomiya 《Journal of Polymer Research》2000,7(1):57-61
Metal layer was deposited by the reduction of NiCl2 and CoCl2 in polyacrylonitrile film after applying an external magnetic field in directions parallel and perpendicular to the surface of the film; the magnetic properties of the metal-deposited film were investigated. When the parallel magnetic field was applied, the values of coercivity (Hc), remanent flux density (Br) and maximum flux density (Bs) increased regardless of the composition of the metal ions, compared with the case without the application of the magnetic field. From the scanning electron micrographs and X-ray diffraction analyses, it was shown that the growth of crystalline orientation in the deposited metals was enhanced by applying a parallel magnetic field. 相似文献
43.
Dr. Daisuke Fujiwara Kousuke Mihara Ryo Takayama Yusuke Nakamura Prof. Mitsuhiro Ueda Prof. Takeshi Tsumuraya Prof. Ikuo Fujii 《Chembiochem : a European journal of chemical biology》2021,22(24):3406-3409
Conformationally constrained peptides hold promise as molecular tools in chemical biology and as a new modality in drug discovery. The construction and screening of a target-focused library could be a promising approach for the generation of de novo ligands or inhibitors against target proteins. Here, we have prepared a protein kinase-focused library by chemically modifying helix-loop-helix (HLH) peptides displayed on phage and subsequently tethered to adenosine. The library was screened against aurora kinase A (AurA). The selected HLH peptide Bip - 3 retained the α-helical structure and bound to AurA with a KD value of 13.7 μM. Bip - 3 and the adenosine-tethered peptide Bip - 3 - Adc provided IC50 values of 103 μM and 7.7 μM, respectively, suggesting that Bip - 3 - Adc bivalently inhibited AurA. In addition, the selectivity of Bip - 3 - Adc to several protein kinases was tested, and was highest against AurA. These results demonstrate that chemical modification can enable the construction of a kinase-focused library of phage-displayed HLH peptides. 相似文献
44.
Masatake Yamaguchi Ken-Ichi Ebihara Mitsuhiro Itakura Tomoko Kadoyoshi Tomoaki Suzudo Hideo Kaburaki 《Metallurgical and Materials Transactions A》2011,42(2):330-339
The microscopic mechanism of grain boundary (GB) embrittlement in metals by hydrogen segregation (trapping) has been not well
understood for many years. From first-principles calculations, we show here that the calculated cohesive energy of bcc Fe
Σ3(111) and fcc Al(Cu) Σ5(012) symmetrical tilt GBs can be significantly reduced if many hydrogen atoms segregate at the GBs.
This indicates that the reduction of the cohesive energy of the GB may cause the hydrogen-induced GB embrittlement in Fe,
Al, and Cu. Considering the “mobile” effect of hydrogen during fracture, especially for the Fe system, more hydrogen atoms
coming from solid solution state can segregate on the gradually formed two fracture surfaces and reduce further the cohesive
energy. We suggest a new idea about the upper and lower critical stresses observed in the constant-load test of hydrogen-induced
delayed fracture in high-strength steels; the upper critical stress is determined by the amount (density) of “immobile” hydrogen
atoms segregated at the GB before fracture, and the lower critical stress is determined by the total amount (density) of immobile
and mobile hydrogen atoms, the latter of which segregate on the two fracture surfaces during fracture. 相似文献
45.
The rates which particles from JIS Test Powders 1, Class 2 (silica sand), Class 3 (silica sand), Class 16 (calcium carbonate, heavy), and JIS Test Powder 2, Class GBM-20 (barium titanate glass) settled out of homogenous suspensions were determined using the principles of the buoyancy weighing-bar method as well as a sedimentation balance. Samples were standardized by Japanese Industrial Standard, and the dispersing agent was NaPP or NaHMP, while the viscosity improver was a starch syrup solution. Although constructing a handmade sedimentation balance is difficult, developing a handmade weighing tool capable of measuring particle size distribution is easy. Herein three weighing-bars, which were composed of aluminum, stainless steel, and copper, were used to measure the particle size distribution. However, an aluminum slit-cylinder occasionally replaced the weighing-bars. The weighing data obtained via an analytical balance were controlled by connecting the balance to a personal computer with an RS-232C interface, and the determined particle size agreed well with the data obtained by Andreasen analyses and the sedimentation balance. 相似文献
46.
Mitsuhiro Arika Masaki Saito Tetsuo Sawada Yoichi Fujii-e 《Journal of Fusion Energy》1997,16(1-2):195-203
General Methodology of Safety Analysis and Evaluation for Fusion Systems (GEMSAFE) was applied to the International Thermonuclear Experimental Reactor (ITER) design in the stage of Engineering Design Activities (EDA) to identify Design Basis Events (DBEs) and the related safety features, which were compared with those of the ITER design in the stage of Conceptual Design Activities (CDA). As a result, 18 DBEs for the EDA design were selected in comparison with 25 DBEs for the CDA design. DBEs related to the fuel area were categorized in higher event category than those of the CDA design due to the increase of the mobile tritium contained in some components. It was necessary to reduce the inventory of the tritium absorbed in the tokamak dust in the EDA design as well as in the CDA design. Some measures were recommended to reduce mobile tritium dissolved in the coolant in the single cooling loop due to the increase of this estimated inventory. 相似文献
47.
A new structure for a compact optical branching circuit is proposed. An asymmetric Y -branching circuit using total reflection is fabricated on an AlGaAs/GaAs wafer. Good branching operation is observed in a single-mode branching circuit with a branching angle of 45°. The exact origins of loss in the branching circuit are also clarified 相似文献
48.
49.
This paper investigates the effectiveness of multiple indium atomic planes in reducing the dislocation density in GaAs epitaxial
layers grown by metalorganic molecular beam epitaxy on GaAs-coated Si substrates prepared by metalorganic chemical vapor deposition.In situ reflection high-energy electron diffraction patterns show that, during the growth of multiple indium atomic-plane structures,
two-dimensional growth takes place. Cross-sectional transmission electron microscope observation shows that InAs sublayers
are commensurate; hence the critical thickness of the InAs layer in this structure is more than one-monolayer. Cathodoluminescence
examination indicates that the defect density decreases as the number (<60) of indium atomic planes increases. This new structure
is more effective in dislocation reduction than conventional In0.1Ga0.9As/GaAs strained-layer superlattices. 相似文献
50.
Sung-Sik Lee Mitsuhiro Nakamura Yasushi Takeuchi 《Korean Journal of Chemical Engineering》1989,6(2):81-87
Demulsification of stable oil-in-water emulsion was studied using powder adsorbent. Among various adsorbents tested, activated
carbon was found to be the most efficient regardless of the type of surfactants used. The more dose of activated carbon for
the demulsification was required, the higher concentration of the surfactant as well as the larger amount of oil and the bigger
size of the lipophilic and hydrophilic groups.
Empirical equations were obtained to correlate the dose of activated carbon to the residual concentration of oil as a function
of the initial concentration of surfactant. 相似文献