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Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells

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Chinese Journal of Polymer Science 2021年第5期39卷 525-536,I0004页

作者： Chao Wang Feng Liu Qiao-mei Chen Cheng-Yi xiao yong-Gang Wu Wei-Wei Li College of Chemistry and Environmental Science Hebei UniversityBaoding 071002China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

Benzothiadiazole(BT)is an electron-deficient unit with fused aromatic core,which can be used to construct conjugated polymers for application in organic solar cells(OSCs).In the past twenty years,huge numbers of conjugated polymers based on BT unit have been developed,focusing on the backbone engineering(such as by using different copolymerized building blocks),side chain engineering(such as by using linear or branch side units),using heteroatoms(such as F,O and S atoms,and CN group),*** modifications enable BT-polymers to exhibit distinct absorption spectra(with onset varied from 600 nm to 1000 nm),different frontier energy levels and *** a consequence,BT-polymers have gained much attention in recent years,and can be simultaneously used as electron donor and electron acceptor in OSCs,providing the power conversion efficiencies(PCEs)over 18%and 14%in non-fullerene and all-polymer *** this article,we provide an overview of BT-polymers for OSCs,from donor to acceptor,via selecting some typical BT-polymers in different *** hope that the summary in this article can invoke the interest to study the BT-polymers toward high performance OSCs,especially with thick active layers that can be potentially used in large-area devices.

关键词： Benzothiadiazole Conjugated polymer Organic solar cells Electron donor Electron acceptor

The morphology, kinematics and metallicity of blue-core galaxies

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Research in Astronomy and Astrophysics 2019年第6期19卷 51-62页

作者： yong-Yun Chen Yan-mei Chen Qiu-Sheng Gu yong Shi Long-Ji Bing xiao-Ling Yu School of Astronomy and Space Science Nanjing University Nanjing 210093 China Collaborative Innovation Center of Modern Astronomy and Space Exploration Nanjing 210093 China

We select 107 blue-core galaxies from the MaNGA survey, studying their morphology, kinematics as well as the gas-phase metallicity. Our results are as follows:(i) In our sample, 26% of blue-core galaxies have decoupled gas-star kinematics, indicating external gas accretion;15% have bar-like structure and 8% show post-merger features, such as tidal tails and irregular gas/star velocity field. All these processes/features, such as accreting external misaligned gas, interaction and bar, can trigger gas inflow. Thus the central star-forming activities lead to bluer colors in their centers(blue-core galaxies).(ii) By comparing with the SDSS DR7 star-forming galaxy sample, we find that the blue-core galaxies have higher central gas-phase metallicity than what is predicted by the local mass-metallicity relation. We explore the origin of the higher metallicity, finding that not only the blue-core galaxies, but also the flat-gradient and red-core galaxies all have higher metallicity. This can be explained by the combined effect of redshift and galaxy color.

关键词： galaxies abundances-galaxies formation-galaxies structure

NONLINEAR WATER WAVES IN LAGRANGIAN COORDINATES:SHALLOW FLUIDS

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Journal of Hydrodynamics 1996年第4期8卷 25-34页

作者： Tian, mei Zhu, yong Shanghai Univ Shanghai China

In this paper the KdV equation has been derived by using the Lagrangian coordinates and the head-on collision between solitary waves was studied without the assumption of irrotational motion condition. It is found tha... 详细信息

关键词： Computer simulation Flow of water Hydrodynamics Nonlinear equations Numerical analysis Water wave effects

A management information system for mine railway transportation equipment

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Journal of China University of Mining and Technology 2008年第3期18卷 373-376页

作者： LI mei-yu HAN Ke-qi ZHANG xiao-yong LI xiao-lin ZHAI yong-jun YU Wei-hu School of Mines China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Railway Operators and Manufacturers of Shanxi Luan Mining Group Company Changzhi Shanxi 046000 China

Good equipment management is essential for the day to day management of an enterprise. Targeted at production opera-tion of the railway transportation department of a mining group and aimed at mine railway equipment management, we have estab-lished a management information system for the equipment in the entire process of the life cycle of equipment. The project deals with basic data about equipment, initial management, maintenance, operation and even disposal, based on a C/S and B/S structure. We adopted an object-oriented approach, dealing with software engineering, information engineering, economic and organizational measures. Thus, effective monitoring and control of the operation of railway equipment and its status in the entire process has been achieved.

关键词： mine railway transportation equipment management information system

Regioselective enzymatic acylation of troxerutin in nonaqueous medium

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Chinese Chemical Letters 2010年第1期21卷 59-62页

作者： xiao, yong mei Mao, Pu Zhao, Zhen Yang, Liang Ru Lin, Xian Fu Henan Univ Technol Coll Chem & Chem Engn Zhengzhou 450001 Peoples R China Zhejiang Univ Dept Chem Hangzhou 310027 Peoples R China

A series of monosubstituted troxerutin esters have been synthesized by enzyme-catalyzed regioselective acylation of troxerutin in nonaqueous *** divinyl dicarboxylates(CH_2=CH-OOC-(CH_2)_n-COO-CH=CH_2,n = 2,3,4,7,8,11) featuring different chain length as acyl donors and alkaline protease from Bacillus subtilis as catalyst,troxerutin was regioselective acylated at B ethoxyl *** results indicated that the regioselectivity of the enzyme-catalyzed acylation was not affected by the chain length o...

关键词： Troxerutin Acylation Enzymatic synthesis Regioselectivity

Numerical simulation of the 3D flow field in a ring die pellet mill considering viscous heating

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International Journal of Modeling, Simulation, and Scientific Computing 2020年第3期11卷 135-153页

作者： yong-mei Wang xiao-Peng Huang Jin-Feng Wu Wan-Xia Yang College of Mechanical and Electrical Engineering Gansu Agricultural University Lanzhou 730070P.R.China

Viscous heating has a substantial influence on the extrusion forming process and product quality of powder *** study selected the MUZL420 ring die pellet mill as the research object,from which a 3D flow physical model was *** numerical simulation of 3D nonisothermal flow in the extrusion pelletizing process of granulated alfalfa was performed with *** distribution laws of pressure,velocity,shear rate,viscosity,viscous heating and temperature in the flow field were revealed to thoroughly investigate the pelletizing process and provide a reference for structural optimization and process *** results showed that two extrusion zones in the pelleting chamber were symmetrical with respect to the center,and the significant pressure gradient along the rotating direction of the ring die and the roller caused the material to flow back in the opposite *** were larger velocity gradients,shear rates and viscous heating levels in the deformation and compaction zone,the negative pressure zone behind the extrusion zone and the die *** distribution of viscosity was opposite to that of the shear *** temperature increase area caused by viscous heating gradually expanded from the material inlet to the bottom of the extrusion chamber along the Z-axis direction,and the temperature increased *** extrusion force and the forming temperature in the extrusion forming zone were captured in the numerical *** extrusion forming density was calculated with the regression prediction model established through the simulation experiment of pelletizing with a ring *** a comparison with the results of mean alfalfa pellet density from the ring die pellet mill experiment,the relative error was less than 5%,which indicated that the numerical simulation method was reliable.

关键词： Ring die pellet mill viscous heating 3D flow field numerical simulation

Characterizations of semihoops based on derivations

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Applied Mathematics(A Journal of Chinese Universities) 2024年第2期39卷 291-310页

作者： WANG mei ZHANG xiao-hong School of Electrical and Control Engineering Shaanxi University of Science and TechnologyXi'an 710021China School of Arts and Sciences Shaanxi University of Science and TechnologyXi'an 710021China School of Mathematics and Statistics Weinan Normal UniversityWeinan 714099China

In this paper,we discuss the related properties of some particular derivations in semihoops and give some characterizations of ***,we prove that every Heyting algebra is isomorphic to the algebra of all multiplicative derivations and show that every Boolean algebra is isomorphic to the algebra of all implicative ***,we show that the sets of multiplicative and implicative derivations on bounded regular idempotent semihoops are in oneto-one correspondence.

关键词： (prelinear)semihoop derivation Heyting algebra Galois connection

Plant enhanced degradation of phenanthrene in the contaminated soil

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Journal of Environmental Sciences 2006年第3期18卷 510-513页

作者： LIAO Min XIE xiao-mei School of Environmental and Resources Sciences Zhejiang University Hangzhou 310029 China

The degradative characteristics ofphenanthrene, microbial biomass carbon, plate counts ofheterotrophic bacteria and most probable number （MPN） of phenanthrene degraders in non-rhizosphere or rhizosphere soils with uninoculating or inoculating phenanthrene degraders were measured. At the initial concentration of 20 mg phenanthrene/kg soil, the half-lives of phenanthrene in uninoculated non-rhizosphere soil, uninoculated rhizosphere soil, inoculated non-rhizosphere soil, and inoculated rhizosphere soil were measured to be 81.5, 47.8, 15.1 and 6.4 d, respectively, and corresponding kinetic data fitted first-order kinetics. The highest degradation rate of phenanthrene was observed in inoculated rhizosphere soil. The degradative characteristics of phenanthrene were closely related to the effects of vegetation on soil microbial process. Vegetation could enhance the magnitude of rhizosphere microbial communities, microbial biomass content, and heterotrophic bacterial community, but barely influence those community components responsible for phenanthrene degradation. Results suggested that combination of vegetation and inoculation with degrading microorganisms of target organic contaminants was a better pathway to enhance degradation of the organic contaminants in soil.

关键词： phenanthrene bioremediation degradation

FPR1 Antagonist (BOC-MLF) Inhibits Amniotic Epithelial-mesenchymal Transition

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Current Medical Science 2024年第1期44卷 187-194页

作者： xiao-mei HUANG E LIAO Jun-qun LIAO Ya-ling LIU yong SHAO Department of Obstetrics and Gynecology The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China Department of Obstetrics Maternal and Child Health Hospital of Hubei ProvinceWuhan 430070China Medical Laboratory Science The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400042China Department of Obstetrics Yubei Maternity and Child Healthcare HospitalChongqing 400042China

Objective:Premature rupture of membranes(PROM)is a common pregnancy disorder that is closely associated with structural weakening of fetal *** have found that formyl peptide receptor 1(FPR1)activates inflammatory pathways and amniotic epithelial-mesenchymal transition(EMT),stimulates collagen degradation,and leads to membrane weakening and membrane *** purpose of this study was to investigate the anti-inflammatory and EMT inhibitory effects of FPR1 antagonist(BOC-MLF)to provide a basis for clinical prevention of ***:The relationship between PROM,FPR1,and EMT was analyzed in human fetal membrane tissue and plasma samples using Western blotting,PCR,Masson staining,and ELISA ***(LPS)was used to establish a fetal membrane inflammation model in pregnant rats,and BOC-MLF was used to treat the LPS rat *** detected interleukin(IL)-6 in blood from the rat hearts to determine whether the inflammatory model was successful and whether the anti-inflammatory treatment was *** used electron microscopy to analyze the structure and collagen expression of rat fetal ***:Western blotting,PCR and Masson staining indicated that the expression of FPR1 was significantly increased,the expression of collagen was decreased,and EMT appeared in *** rat model indicated that LPS caused the collapse of fetal membrane epithelial cells,increased intercellular gaps,and decreased ***-MLF promoted an increase in fetal membrane collagen,inhibited EMT,and reduced the weakening of fetal ***:The expression of FPR1 in the fetal membrane of PROM was significantly increased,and EMT of the amniotic membrane was ***-MLF can treat inflammation and inhibit amniotic EMT.

关键词： formyl peptide receptor 1 BOC-MLF epithelial-mesenchymal transition premature rupture of membranes