The Party organization in higher vocational colleges is the basis for the Party to carry out all the work in higher vocational colleges and the Partys combat effectiveness. Its construction is the inherent requirement...The Party organization in higher vocational colleges is the basis for the Party to carry out all the work in higher vocational colleges and the Partys combat effectiveness. Its construction is the inherent requirement to cultivate morality and cultivate people in higher vocational colleges, the inevitable choice to strengthen the Party organization construction in higher vocational colleges, and the objective need to practice people-centered thinking. Party organizations in higher vocational colleges should keep up with the pace of the new era and explore the path of construction. Firstly, they should focus on improving the leading power of party organizations based on learning;Secondly, we should take service as the goal and strive to improve the execution of the party organization;Thirdly, we should take innovation as the driving force and strive to enhance the combat effectiveness of the Party organization.展开更多
This article proposed the risk early-warning model of gas hazard based on Rough Set and neural network. The attribute quantity was reduced by Rough Set, the main characteristic attributes were withdrawn, the complexit...This article proposed the risk early-warning model of gas hazard based on Rough Set and neural network. The attribute quantity was reduced by Rough Set, the main characteristic attributes were withdrawn, the complexity of neural network system and the computing time was reduced, as well. Because of fault-tolerant ability, parallel processing ability, anti-jamming ability and processing non-linear problem ability of neural network system, the methods of Rough Set and neural network were combined. The examples research indicate： applying Rough Set and BP neural network to the gas hazard risk early-warning coal mines in coal mine, the BPNN structure is greatly simplified, the network computation quantity is reduced and the convergence rate is speed up.展开更多
Herein,a novel copper metal-organic framework(MOF),[Cu_(2)(CPTPTA)(H_(2)O)]·CH_(3)NH_(3)^(+)·4H_(2)O·7NMF(1)(H_(5)CPTPTA=5’-(4-carboxyphenyl)-[1,1’:3’,1’’-terphenyl]-3,3’’,5,5’’-tetracarboxylic...Herein,a novel copper metal-organic framework(MOF),[Cu_(2)(CPTPTA)(H_(2)O)]·CH_(3)NH_(3)^(+)·4H_(2)O·7NMF(1)(H_(5)CPTPTA=5’-(4-carboxyphenyl)-[1,1’:3’,1’’-terphenyl]-3,3’’,5,5’’-tetracarboxylic acid,NMF=N-methylformamide),has been successfully synthesized via solvothermal reaction.By applying a linker desymmetrization strategy,compound 1 was constructed by a reduced-symmetry ligand CPTPTA^(5-),leading to three types of channels with various functional sites.Meanwhile,the functional sites promoted the adsorption of CO_(2),the uptakes being 123.2(2)and 66.8(2)cm^(3) g^(-1) at 273 and 298 K,respectively.Furthermore,the smaller channel exists as two kinds of active sites:Lewis acid sites(LASs)and Bronsted acid sites(BASs);whereas the larger one only exists as LASs.The synergistic catalysis of LASs and BASs makes compound 1 exhibit excellent CO_(2) cycloaddition efficiency towards propylene oxide,and the yield can reach 97%.Overall,such a linker desymmetrization strategy can afford an effective approach to synthesize novel functional MOF materials.展开更多
文摘The Party organization in higher vocational colleges is the basis for the Party to carry out all the work in higher vocational colleges and the Partys combat effectiveness. Its construction is the inherent requirement to cultivate morality and cultivate people in higher vocational colleges, the inevitable choice to strengthen the Party organization construction in higher vocational colleges, and the objective need to practice people-centered thinking. Party organizations in higher vocational colleges should keep up with the pace of the new era and explore the path of construction. Firstly, they should focus on improving the leading power of party organizations based on learning;Secondly, we should take service as the goal and strive to improve the execution of the party organization;Thirdly, we should take innovation as the driving force and strive to enhance the combat effectiveness of the Party organization.
文摘This article proposed the risk early-warning model of gas hazard based on Rough Set and neural network. The attribute quantity was reduced by Rough Set, the main characteristic attributes were withdrawn, the complexity of neural network system and the computing time was reduced, as well. Because of fault-tolerant ability, parallel processing ability, anti-jamming ability and processing non-linear problem ability of neural network system, the methods of Rough Set and neural network were combined. The examples research indicate： applying Rough Set and BP neural network to the gas hazard risk early-warning coal mines in coal mine, the BPNN structure is greatly simplified, the network computation quantity is reduced and the convergence rate is speed up.
基金supported by the National Natural Science Foundation of China(no.21771078 and 21621001)the 111 Project(B17020).
文摘Herein,a novel copper metal-organic framework(MOF),[Cu_(2)(CPTPTA)(H_(2)O)]·CH_(3)NH_(3)^(+)·4H_(2)O·7NMF(1)(H_(5)CPTPTA=5’-(4-carboxyphenyl)-[1,1’:3’,1’’-terphenyl]-3,3’’,5,5’’-tetracarboxylic acid,NMF=N-methylformamide),has been successfully synthesized via solvothermal reaction.By applying a linker desymmetrization strategy,compound 1 was constructed by a reduced-symmetry ligand CPTPTA^(5-),leading to three types of channels with various functional sites.Meanwhile,the functional sites promoted the adsorption of CO_(2),the uptakes being 123.2(2)and 66.8(2)cm^(3) g^(-1) at 273 and 298 K,respectively.Furthermore,the smaller channel exists as two kinds of active sites:Lewis acid sites(LASs)and Bronsted acid sites(BASs);whereas the larger one only exists as LASs.The synergistic catalysis of LASs and BASs makes compound 1 exhibit excellent CO_(2) cycloaddition efficiency towards propylene oxide,and the yield can reach 97%.Overall,such a linker desymmetrization strategy can afford an effective approach to synthesize novel functional MOF materials.
