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71.
Tetsuji Kaneko Norihiko Tanaka Shinichi Ishioka Fujii Kazumi Yuichi Fukaya Katsuhiko Kumagai 《Journal of Nuclear Science and Technology》2019,56(9-10):873-880
ABSTRACTFukushima Daiichi nuclear power plants (1F) were damaged by unprecedented severe accident in the great east Japan earthquake, and seawater and freshwater had been injected as an emergency countermeasure for the core cooling. Although, the primary containment vessel (PCV) was not supposed to be exposed to diluted seawater, the PCV will be exposed to diluted seawater environment until fuel debris removal is completed. Therefore, it is necessary to establish a countermeasure of corrosion for the PCVs made of carbon steel. In this study, the effect of the addition of corrosion inhibitor, which is one of the corrosion countermeasures, was investigated by two types of corrosion tests. As a result of the immersion corrosion test, it was found that any of the three kinds of corrosion inhibitor could suppress corrosion of carbon steel. In addition, as a result of the inhibitor interim addition test, it was found that corrosion of carbon steel covered with corrosion products could be suppressed by optimizing the additive amount of corrosion inhibitor in the cooling water. 相似文献
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A technology incubator provides an important support for a technology transfer mechanism. A technology incubator bridges the incubatees to the technology provider. In our research, we propose a technology selection model for the incubatees. Incubator managers, as decision-makers, attempt to evaluate new technology for the incubatees by comparing its profit with that of the old or established technology. The technology is proposed by a technology provider, which in this case is a university. In the technology selection activity, the distance between the technology level of incubatees and transferred technology should be considered. Unfortunately, there has been no effort to formulate a technology selection model in the technology incubator that considers the technology distance and is linked to the incubatees’ profit as financial performance. We examine the impact of the technological-level and technology assimilation rate in the technology selection process in the technology incubator. We analyse the external factor of customer acceptance of new technology with a probabilistic value and technology obsolescence. Furthermore, we introduce a profit-sharing scheme to share the profit of the incubatees with the university as a technology provider. Utilising a profit-sharing scheme means sharing the risk between incubatees and the university. 相似文献
75.
Selective CO2 Capture and High Proton Conductivity of a Functional Star‐of‐David Catenane Metal–Organic Framework
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You‐Gui Huang Shu‐Qi Wu Wei‐Hua Deng Gang Xu Fa‐Lu Hu Jonathan P. Hill Wei Wei Sheng‐Qun Su Lok Kumar Shrestha Osamu Sato Ming‐Yan Wu Mao‐Chun Hong Katsuhiko Ariga 《Advanced materials (Deerfield Beach, Fla.)》2017,29(42)
Network structures based on Star‐of‐David catenanes with multiple superior functionalities have been so far elusive, although numerous topologically interesting networks are synthesized. Here, a metal–organic framework featuring fused Star‐of‐David catenanes is reported. Two triangular metallacycles with opposite handedness are triply intertwined forming a Star‐of‐David catenane. Each catenane fuses with its six neighbors to generate a porous twofold intercatenated gyroid framework. The compound possesses exceptional stability and exhibits multiple functionalities including highly selective CO2 capture, high proton conductivity, and coexistence of slow magnetic relaxation and long‐range ordering. 相似文献
76.
Xiaofang Jia Kosuke Minami Koichiro Uto Alice Chinghsuan Chang Jonathan P. Hill Jun Nakanishi Katsuhiko Ariga 《Advanced materials (Deerfield Beach, Fla.)》2020,32(4):1905942
There is a growing interest in the development of dynamic adaptive biomaterials for regulation of cellular functions. However, existing materials are limited to two-state switching of the presentation and removal of cell-adhesive bioactive motifs that cannot emulate the native extracellular matrix (ECM) in vivo with continuously adjustable characteristics. Here, tunable adaptive materials composed of a protein monolayer assembled at a liquid–liquid interface are demonstrated, which adapt dynamically to cell traction forces. An ultrastructure transition from protein monolayer to hierarchical fiber occurs through interfacial jamming. Elongated fibronectin fibers promote formation of elongated focal adhesion structures, increase focal adhesion kinase activation, and enhance neuronal differentiation of stem cells. Cell traction force results in spatial rearrangement of ECM proteins, which feeds back to alter stem cell fate. The reported biomimetic adaptive liquid interface enables dynamic control of stem cell behavior and has potential translational applications. 相似文献
77.
Pimolluck Jirakunkanok Katsuhiko Sano Satoshi Tojo 《Artificial Intelligence and Law》2018,26(3):201-249
This study realizes belief/reliability change of a judge in a legal judgment by dynamic epistemic logic (DEL). A key feature of DEL is that possibilities in an agent’s belief can be represented by a Kripke model. This study addresses two difficulties in applying DEL to a legal case. First, since there are several methods for constructing a Kripke model, our question is how we can construct the model from a legal case. Second, since this study employs several dynamic operators, our question is how we can decide which operators are to be applied for belief/reliability change of a judge. In order to solve these difficulties, we have implemented a computer system which provides two functions. First, the system can generate a Kripke model from a legal case. Second, the system provides an inconsistency solving algorithm which can automatically perform several operations in order to reduce the effort needed to decide which operators are to be applied. By our implementation, the above questions can be adequately solved. With our analysis method, six legal cases are analyzed to demonstrate our implementation. 相似文献
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79.
Adhesive and surface-chemical properties of poly(styrene macromer-butyl acrylate) copolymers, poly (styrene-butyl acrylate macromer) copolymers and poly (styrene-butyl acrylate) random copolymers were investigated. The results were as follows:
(1) The adhesive properties of the copolymers which were prepared by the macromer-technique were different from the random copolymers.
(2) It was found that there were differences in the surface and molecular structure between the copotymers which were prepared by the macromer technique and the random copolymers. These differences were evident from the results of measurements of the surface free energy of the copolymers and of the interfacial tension of water/toluene in the presence of the copolymers.
(3) The reason why there were differences in the surface and molecular structure seemed to be that the copolymers which were prepared by the macromer technique had graft chains and a different inner-structure from the random copolymers. Therefore, it was suggested that the graft copolymers which were prepared by the macromer technique had a phase-separated structure. 相似文献
(1) The adhesive properties of the copolymers which were prepared by the macromer-technique were different from the random copolymers.
(2) It was found that there were differences in the surface and molecular structure between the copotymers which were prepared by the macromer technique and the random copolymers. These differences were evident from the results of measurements of the surface free energy of the copolymers and of the interfacial tension of water/toluene in the presence of the copolymers.
(3) The reason why there were differences in the surface and molecular structure seemed to be that the copolymers which were prepared by the macromer technique had graft chains and a different inner-structure from the random copolymers. Therefore, it was suggested that the graft copolymers which were prepared by the macromer technique had a phase-separated structure. 相似文献
80.
Katsuhiko Saido Shigeyasu Motohashi Takeshi Kuroki Tadashi Ikemura Makoto Kirisawa 《应用聚合物科学杂志》1984,29(11):3261-3268
Bis(2,4-diphenylbutyl) phathalate, a plasticizer for poly(vinyl chloride) (PVC), was synthesized from 2,4-diphenyl-1-butene obtained by a thermal decomposition under reduced pressure of waster polystyrene. The heat stability of bis(2,4-diphenylbutyl) phthalate was determined by thermogravimetric analysis and compared with typical plasticizers. It was recognized that bis(2,4-diphenylbutyl) phthalate showed high heat resistant. A test sheet of plasticized PVC with bis(2,4-diphenylbutyl) phthalate and bis(2-ethylhexyl) phthalate was prepared. The test sheet was used for determination of the plasticizing performance of bis(2,4-diphenylbutyl) phthalate. Although the effect of bis(2,4-diphenylbutyl) phthalate imparting flexibility to PVC is poorer than that of bis(2-ethylehexyl) phthalate, the former phthalate is well compatible with PVC and exceedingly heat-resistant. 相似文献