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221 results on '"Liu, Jing‐Hui"'

61. optical parametric oscillators

Author

TIAN Jin-rong, 田金荣, primary, LIU Jing-hui, 刘京徽, additional, SONG Yan-rong, 宋晏蓉, additional, and ZHANG Xin-ping, 张新平, additional

Published
2014
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93. Cu-Catalyzed cross-coupling reactions of epoxides with organoboron compounds.

Author

Liu, Jing-Hui, Lou, Xin, Xiao, Bin, Zhang, Zheng-Qi, Lu, Xi, Fu, Yao, Lu, Xiao-Yu, and Yang, Chu-Ting

Subjects
*EPOXY compounds, *COPPER catalysts, *ORGANOBORON compounds, *CARBON-carbon bonds, *ORGANIC synthesis, *COUPLING reactions (Chemistry), *RING-opening reactions
Abstract

A copper-catalyzed cross-coupling reaction of epoxides with arylboronates is described. This reaction is not limited to aromatic epoxides, because aliphatic epoxides are also suitable substrates. In addition, N-sulfonyl aziridines can be successfully converted into the products. This reaction provides convenient access to β-phenethyl alcohols, which are valuable synthetic intermediates. [ABSTRACT FROM AUTHOR]

Published
2015
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94. Alterations of tau and VASP during microcystin-LR-induced cytoskeletal reorganization in a human liver cell line.

Author

Sun, Yu, Liu, Jing‐hui, Huang, Pu, Guo, Zong‐lou, and Xu, Li‐hong

Subjects
TAU leptons, LIVER cells, MICROCYSTINS, CYTOSKELETAL proteins, PHOSPHORYLATION, BIOMEDICAL engineering
Abstract

ABSTRACT Previously, we have reported alterations to HSP27 during Microcystin-LR (MC-LR)-induced cytoskeletal reorganization in the human liver cell line HL7702. To further elucidate the detailed mechanism of MC-LR-induced cytoskeletal assembly, we focused on two cytoskeletal-related proteins, Tau and VASP. These two proteins phosphorylated status influences their ability to bind and stabilize cytoskeleton. We found that MC-LR markedly increased the level of Tau phosphorylation with the dissociation of phosphorylated Tau from the cytoskeleton. Furthermore, the phosphorylation of Tau induced by MC-LR was suppressed by an activator of PP2A and by an inhibitor of p38 MAPK. VASP was also hyperphosphorylated upon MC-LR exposure; however, its phosphorylation appeared to regulate its cellular localization rather than cytoskeletal dynamics, and its phosphorylation was unaffected by the PP2A activator. These data suggest that phosphorylated Tau is regulated by p38 MAPK, possibly as a consequence of PP2A inhibition. Tau hyperphosphorylation is likely an important factor leading to the cytoskeletal destabilization triggered by MC-LR and the role of VASP alteration upon MC-LR exposure needs to be studied further. To our knowledge, the finding that Tau is implicated in cytoskeletal destabilization in MC-LR-treated hepatocytes and MC-LR-induced VASP's alteration has not been reported previously. © 2013 Wiley Periodicals, Inc. Environ Toxicol 30: 92-100, 2015. [ABSTRACT FROM AUTHOR]

Published
2015
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95. Retarded modes of lateral ferromagnetic/ferromagnetic superlattice

Author

Jia Cheng, Liu Yan-Fen, and Liu Jing-Hui

Subjects
Condensed Matter::Materials Science, symbols.namesake, Materials science, Maxwell's equations, Condensed matter physics, Ferromagnetism, Frequency band, Superlattice, symbols, General Physics and Astronomy, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Surface mode
Abstract

In this paper，we calculated the retarded modes of semi-infinite lateral ferromagnetic/ ferromagnetic superlattice with the effective-medium theory. We took the Co/Ni system surface modes and bulk modes as the examples for the superlattice and found some interesting properties different from that of the lateral ferromagnetic/nonmagnetic superlattice. Lateral magnetic/magnetic superlattice have some complex retarded modes which are very common in the systems. Changing the ratio of the thicknesses of the ferromagnetic layers, the two branches of surface mode frequency and bulk mode frequency band can be adjusted consequently. This tailoring effect is related to the two ferromagnetic layers' saturation magnetization values, and it is quite pronounced when the two saturation magnetization values are quite different from each other. If the difference between the tow values is large，the tailoring effect of f1 is more obvious. When the saturation magnetization value of the second ferromangtic medium approaches to zero，this system will become the magnetic/nonmagnetic superlattice. If in Maxwell equation ε=0，the retarded modes will transit to the ferromangtic/ferromangnetic superlattice magnetostatic modes.

Published
2008

96. Visible Light-Accelerated Palladium-Catalyzed Thiocarbonylation Using Oxalic Acid Monothioester with Aryl/Alkenyl Sulfonium Salts

Author

Hu, Guo-Qin, Zhang, Wen-Yan, Liu, Yong-Xin, Liu, Jing-Hui, and Zhao, Bin

Abstract

Herein, we present a decarboxylative thiocarbonylation of aryl and alkenyl sulfonium salts with oxalic acid monothioethers (OAMs), which can be achieved by visible light-accelerated palladium catalysis. Sulfonium salts are widely available, and OAM is an easily accessible and stored reagent; this mild reaction method can also be used for the synthesis of different types of thioester compounds. The reaction represents a new application of visible light-accelerated palladium catalysis in catalytic decarboxylative cross-couplings.

Published
2023
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98. Regulating Effect of Sowing Depth on Saline Land Oat Growth and K+ and Na+ Migration

Author

Wu, Jun Ying, Liu, Jing Hui, Li, Qian, Zhao, Bao Ping, and Li, Li Jun

Abstract

Biological utilization of Saline soil is an effective way to improve land utilization and ecological environment. Oat is a unique crop of Inner Mongolia and has strong resistance to salt. This study setting five sowing depth of 3 cm, 5 cm, 7 cm, 9 cm and 11 cm on the morphological and physiological characteristics of two oat cultivars. The K+ /Na+ and selective absorption and migration, yield and nutrient quality, and soil salt content were measured from a field experiment. The highest yield of oat on saline land was obtained at sowing depth of 7 cm. The dry matter of stem and leaf accumulated more rapidly at 7 cm, membrane damage was less, leaf chlorophyll content was higher and kept higher photosynthetic capacity, K+ /Na+ and SK+, Na+ (migration) of stem and leaf were higher. So it showed stronger salinity adaptability and higher yield, and the yield was between 43.1% and 64.1% higher than conventional seed planting’s and it occupied between 37.2% and 42.7% of loam soil, and the crude fat content was higher. Sowing depth of 5 cm was the second choice, but sowing depth of 9 and 11 centimeter was not suitable to plant salt-enduring cultivar. The decrease sequence of oat yield and quality under salt stress was: grain yield > fresh yield > hay yield > crude fat > crude fiber. The grain yield and crude fat of salt-enduring cultivar Nei nong da you 1 were favorable for improving oat’s salinity adaptability and increasing the desalination in soil. The study can provide a theoretical basis to improve saline land utilization and high-yield cultivation of oat.

Published
2012
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99. Pd-catalysed decarboxylative Suzuki reactions and orthogonal Cu-based O-arylation of aromatic carboxylic acidsElectronic supplementary information (ESI) available: Detailed procedures and compound characterization. See DOI: 10.1039/c0cc04104a.

Author

Dai, Jian-Jun, Liu, Jing-Hui, Luo, Dong-Fen, and Liu, Lei

Subjects
*PALLADIUM catalysts, *CARBOXYLIC acids, *CHEMICAL reactions, *ARYLATION, *COPPER, *ORGANIC synthesis, *ESTERS
Abstract

Pd-catalysed decarboxylative Suzuki reactions and orthogonal Cu-based O-arylation reactions of aromatic carboxylic acids are reported. The new reactions may provide alternative routes for the synthesis of some biaryls and aromatic carboxylic esters. [ABSTRACT FROM AUTHOR]

Published
2010

100. Research on support technology for roadway under strong dynamic pressure while mining in fully mechanised caving face and its application.

Author

Liu Jing-Hui, Mou Guo-Li., Zhao Zhi-He, Liu Jing-Hui, Mou Guo-Li., and Zhao Zhi-He

Abstract

Investigations were carried out into the characteristics of the rock surrounding the roadway to be driven along the gob during the mining of a fully mechanised caving face at the Fucun coal mine in China in order to design the optimum support method. A support system consisting of a combination of rock bolting and mesh ladder and rock bolting and rope girder was developed based on the pressure and deformation of the roadway. The method selected resulted in little deformation of the roadway and ensured safe production during stoping., Investigations were carried out into the characteristics of the rock surrounding the roadway to be driven along the gob during the mining of a fully mechanised caving face at the Fucun coal mine in China in order to design the optimum support method. A support system consisting of a combination of rock bolting and mesh ladder and rock bolting and rope girder was developed based on the pressure and deformation of the roadway. The method selected resulted in little deformation of the roadway and ensured safe production during stoping.

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