排序方式: 共有17条查询结果,搜索用时 15 毫秒
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The review summarized organelle target strategies, structures, fluorescence behavior and biological applications of H2O2 fluorescent probes with mitochondria, nuclei and lysosomes-targetable ability. 相似文献
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P. Boillat G.G. Scherer A. Wokaun G. Frei E.H. Lehmann 《Electrochemistry communications》2008,10(9):1311-1314
High resolution neutron radiography was used to observe the time resolved distribution of 2H nuclei in the membrane of an operating polymer electrolyte fuel cell (PEFC) after changing the anode gas from 1H2 to 2H2. The rate of replacement and the distribution of 2H nuclei shortly after the change of the anode gas were found to be independent of the applied current density. This behavior can be explained by a high exchange current density of the hydrogen oxidation reaction (HOR), the uptake of 2H nuclei in the membrane being limited by diffusive transport. A simple calculation as well as qualitative analysis is given to support this explanation. 相似文献
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LI Yuan fang HUANG Cheng zhi ** Laboratory of Supramolecular Chemistry Biomedical Analysis College of Chemistry Chemical Engineering Southwest Normal University Chongqing P. R. China 《高等学校化学研究》2003,19(3):275-279
IntroductionIt is well known thata ring- like deposit can beformed when a droplet of coffee is splashed onto atable. The reason for this has recently been investi-gated and determined to be the solvent transporta-tion from the interior of the droplet in order tocompensate for the solvent evaporative loss at theperiphery of the droplet spot[1] . The solventtrans-portation thus forms a capillary flow that carriesthe solute to the periphery of the spot,where thesolute accumulates to form a ring- … 相似文献
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《中国化学快报》2019,30(10):1834-1842
Hydrogen peroxide(H_2 O_2), as important products of oxygen metabolism, plays an important role in many biological processes, such as immune responses and cellular signal transduction. However, abnormal production of H_2 O_2 can damage cellular biomolecules, which was closely associated with many diseases.Thus, it is urgent to monitor the level change of H_2 O_2 in living cells, particularly at subcellular levels.Toward this end, a wide variety of H_2 O_2 fluorescent probes have been designed, developed and applied for imaging of H_2 O_2 in subcellular levels. In this review, we highlight the representative cases of H_2 O_2 fluorescent probes with mitochondria, nuclei and lysosomes-targetable ability. The review contains organelle target strategies, structures, fluorescence behavior and biological applications of these probes. 相似文献
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The cost of cellulase is still a problem for bioethanol production. As the cellulase of Trichoderma reesei is applicable for producing ethanol from cellulosic materials, the cellulase productivity of this fungus should be increased.
Therefore, we attempted to develop a system to isolate the strain with higher degrading ability of a filter paper and superior
proliferation characteristics among the conidia treated with the mitotic arrester, colchicine. When green mature conidia of
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reesei RUT C-30 were swollen, autopolyploidized, and incubated in the double-layer selection medium containing Avicel, colonies
appeared on the surface earlier than the original strain. When such colonies and the original colony were incubated on the
Avicel plates, strain B5, one of the colonies derived from the colchicine-treated conidia, showed superior proliferation characteristics.
Moreover, when strain B5 and the original strain were compared in the filter paper degrading ability and the cellulose hydrolyzing
activity, strain B5 was also superior to the original strain. It was suspected that superior proliferation characteristics
of strain B5 reflects higher filter paper degrading ability. Thus, we concluded that the Trichoderma strain with higher degrading ability of a filter paper and superior proliferation characteristics can be isolated using Avicel
plates and the double-layer selection medium. 相似文献
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Temporal evolution and spatial distribution of acoustic cavitation structures in a thin liquid layer were investigated experimentally with high-speed photography. The inception and disappearance processes of cavitation bubble cloud revealed that the metastable cavitaton structures formed in the thin liquid layer caused a long-term “memory effect”. A factor which weakens the memory effect was identified. The distribution of cavitation nuclei was investigated by changing the temporal decay of the memory effect. 相似文献
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