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Stable GeSe thin-film solar cells employing non-toxic SnO_(2)as buffer layer

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Rare Metals 2022年第9期41卷 2992-2997页

作者： Jian-Min Wu Yan-ping Lv Hao Wu Hui-Sheng Zhang Fang Wang Jun Zhang jin-zeng Wang Xiao-Hong Xu Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuan030000China

Germanium monoselenide(GeSe)has attracted significant attention recently for its excellent optoelectronic properties,nontoxicity,and high ***,the current best-performance GeSe solar cells usually take toxic CdS as the buffer layer that restricts their practical *** we select non-toxic SnO_(2)as the buffer layer and construct environment-friendly SnO_(2)/GeSe heterojunction solar cells.

关键词： stability. heterojunction optoelectronic

Effect of M-EMS on the solidification structure of a steel billet

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International Journal of Minerals,Metallurgy and Materials 2011年第2期18卷 159-164页

作者： Hua-jie Wu Ning Wei Yan-ping Bao Guo-xin Wang Chao-ping Xiao jin-jin Liu Engineering Research Institute University of Science and Technology Beijing Beijing 100083 China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing100083 China

Effects of mold electromagnetic stirring （M-EMS） on the solidification structure of 45# steel billet were investigated by examination of interdendritic corrosion. The results show that the primary and secondary dendrite arm spacings increase from the edge of the billet to the center and decrease obviously with increasing electromagnetic torque, which will be beneficial to refine the solidification structure and enlarge the equiaxed crystal zone. The ratio of equiaxed crystal increases by 15.9% with the electromagnetic torque increasing from 230 to 400 cN·cm. The increase of stirring intensity can improve the cooling rate and the impact of M-EMS on it reduces from the edge of the billet to the central area, where the cooling rates are similar at different torques. The closer to the central area, the less the influence of M-EMS on the cooling rate is. The ratio of the primary to secondary dendrite arm spacing is approximately 2.0, namely, λ1≈2λ2, and is constant irrespective of the stirring intensity and position of the billet. Original position analysis （OPA） results indicate that the center segregation of the billet is greatly improved, and the more uniform and compact solidification structure will be obtained with the increase of stirring intensity.

关键词： continuous casting electromagnetic stirring dendrite arm spacing cooling rate solidification

A spatially triggered dissipative resource distribution policy for SMT processors

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第8期9卷 1070-1082页

作者： Hong-zhou CHEN Xue-zeng PAN Ling-di ping Kui-jun LU Xiao-ping CHEN School of Computer Science and Technology Zhejiang University Hangzhou 310027 China

Programs take on changing behavior at nmtime in a simultaneous multithreading （SMT） environment. How reasonably common resources are distributed among the threads significantly determines the throughput and fairness performance in SMT processors. Existing resource distribution methods either mainly rely on the front-end fetch policy, or make distribution decisions according to the limited information from the pipeline. It is difficult for them to efficiently catch the various resource requirements of the threads. This work presents a spatially triggered dissipative resource distribution （SDRD） policy for SMT processors, its two parts, the self-organization mechanism that is driven by the real-time instructions per cycle （IPC） performance and the introduction of chaos that tries to control the diversity Of trial resource distributions, work together to supply sustaining resource distribution optimization for changing program behavior. Simulation results show that SDRD with fine-grained diversity controlling is more effective than that with a coarse-grained one. And SDRD benefits much from its two well-coordinated parts, providing potential fairness gains as well as good throughput gains. Meanings and settings of important SDRD parameters are also discussed.

关键词： Simultaneous multithreading (SMT) Resource distribution Dynamic optimization Dissipative structures

An Arabidopsis mutant atcsr-2 exhibits high cadmium stress sensitivity involved in the restriction of H_2S emission

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第12期13卷 1006-1014页

作者： Ya-wei LI Ze-hua GONG Yao MU Yi-xian ZHANG zeng-jie QIAO Li-ping ZHANG Zhu-ping jin Hua LI Yan-xi PEI School of Life Science Shanxi UniversityTaiyuan 030006China School of Chemical Engineering and Environment North University of ChinaTaiyuan 030051China School of Environmental Science and Resources Shanxi UniversityTaiyuan 030006China

The gene AtCSR encodes peptidyl-prolyl cis/trans isomerases (PPIases) that accelerate energetically unfavorable cis/trans isomerization of the peptide bond preceding proline *** our studies,we found that AtCSR was associated with cadmium (Cd)-sensitive response in *** results show that AtCSR expression was triggered by Cd-stress in wild type *** expression of some genes responsible for Cd2+ transportation into vacuoles was induced,and the expression of the iron-regulated transporter 1 (IRT1) related to Cd2+ absorption from the environment was not induced in wild type with Cd2+ *** expression of Cd-transportation related genes was not in response to Cd-stress,whereas IRT expression increased dramatically in atcsr-2 with Cd2+ *** expression of glutathione 1 (GSH1) was consistent with GSH being much lower in atcsr-2 in comparison with the wild type with Cd2+ ***,malondialdehyde (MDA),hydrogen peroxide,and Cd2+ contents,and activities of some antioxidative enzymes,differed between the wild type and *** sulfide (H2S) has been confirmed as the third gas-transmitter over recent *** findings revealed that the expression pattern of H2 S-releasing related genes and that of Cd-induced chelation and transportation genes matched well in the wild type and atcsr-2,and H2S could regulate the expression of the Cd-induced genes and alleviate Cd-triggered ***,one possible suggestion was given:down-regulation of atcsr-2,depending on H2S gas-transmitter not only weakened Cd2+ chelation,but also reduced Cd2+ transportation into vacuoles,as well as enhancing the Cd2+ assimilation,thus rendering atcsr-2 mutant sensitive to Cd-stress.

关键词： AtCSR H2S gas-transmitter Glutathione Cadmium stress sensitivity

Possibility of Quantum Teleportation and the Reduced Density Matrix

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Chinese Physics Letters 2001年第7期18卷 860-863页

作者： ZHU Hong-Bo zeng jin-Yan Department of Physics Peking UniversityBeijing 100871

It is shown that only the maximally entangled two-particle(spin 1/2)states whose one-particle reduced density matrix isρ(i)=(1/2)I2 can realize the teleportation of an arbitrary one-particle spin *** on this,to teleport an arbitrary k-particle spin state,one must prepare an N-particle entangled state whose k-particle(kk≥2)state,except for special states with only two components.

关键词： state matrix arbitrary

Modification of Bertrand’s Theorem and Extended Runge-Lenz Vector

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Chinese Physics Letters 1999年第11期16卷 781-783页

作者： WU Zuo-bing zeng jin-yan Department of Physics Peking UniversityBeijing 100871 Laboratory for Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100080

It is shown that for a particle with suitable angular momenta in the screened Coulomb potential or isotropic harmonic potential, there still exist closed orbits rather than ellipse, characterized by the conserved aphelion and perihelion vectors, i.e. extended Runge-Lenz vector, which implies a higher dynamical symmetry than the geometrical symmetry O_(3). The closeness of a planar orbit implies the radial and angular motional frequencies are commensurable.

关键词： Runge implies symmetry

Recent advance in single-atom catalysis

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Rare Metals 2021年第4期40卷 767-789页

作者： zeng-Xi Wei Ya-Ting Zhu jin-Yuan Liu Zhi-Cheng Zhang Wen-ping Hu Hui Xu Yue-Zhan Feng Jian-Min Ma School of Physics and Electronics Hunan UniversityChangsha 410082China Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University and Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China School of the Environment and Safety Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002China

Single-atom catalysts(SACS) have obtained a great deal of attention in many catalytic fields due to the high atom utilization efficiency and high catalytic ***,great achievements on S ACs have been made for thermocatalysis,electrocatalysis,and photocatalysis which play an important role in obtaining value-added ***,it remains a great challenge to fabricate S ACs with high metal loading and investigate their reaction ***,it is necessary to highlight the recent development of S ACs in these fields to guide future *** this review,we overviewed the thermocatalysis applications of SACs in CO oxidation,preferential oxidation of CO,water-gas shift reaction,methane conversion,methanol steam reforming,aqueous-phase reforming of methanol,hydrogenation of alkynes and dienes,hydrogenation of CO,and hydrogenation of substituted ***,the oxygen reduction reaction(ORR),hydrogen evolution reaction(HER),oxygen evolution reaction(OER),CO2 reduction reaction(CO2 RR),and N2 reduction reaction(N2 RR) for photocatalytic and electrocatalytic fields were also ***,the opportunities and challenges of SACs were pointed out.

关键词： Single-atom catalysts Thermocatalysis Electrocatalysis Photocatalysis Catalytic activity

Improvement in Toughness of Poly(ethylene 2,5-furandicarboxylate) by Melt Blending with Bio-based Polyamide11 in the Presence of a Reactive Compatibilizer

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Chinese Journal of Polymer Science 2020年第10期38卷 1099-1106页

作者： Yong Yang An-ping Tian Ya-jin Fang jing-Gang Wang jin Zhu Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Ningbo Institute of Materials Technology and EngineeringChinese Academy of Sciences Weihai Honglin Electronic Technology CO. LTD

The objective of this study was to improve the toughness of bio-based brittle poly(ethylene 2,5-furandicarboxylate)(PEF) by melt blending with bio-based polyamide11(PA11) in the presence of a reactive multifunctional epoxy compatibilizer(Joncryl ADR?-4368).The morphological,thermal,rheological,and mechanical properties of PEF/PA1 1 blends were *** with neat PEF,the toughness of PEF/PA11 blend was not improved in the absence of the reactive compatibilizer due to the poor compatibility between the two *** Joncryl was incorporated into PEF/PA1 1 blends,the interfacial tension between PEF and PA1 1 was obviously reduced,reflecting in the fine average particle size and narrow distribution of PA11 dispersed phase as observed by scanning electron microscopy(SEM).The complex viscosities of PEF/PA11 blends with Joncryl were much higher than that of PEF/PA11 blend,which could be ascribed to the formation of graft copolymers through the epoxy groups of Joncryl reacting with the end groups of PEF and PA11 molecular ***,the compatibility and interfacial adhesion between PEF and PA11 were greatly improved in the presence of *** compatibilized PEF/PA11 blend with 1.5 phr Joncryl exhibited significantly improved elongation at break and unnotch impact strength with values of 90.1% and 30.3 kJ/m2,respectively,compared with those of 3.6% and 3.8 kJ/m2for neat PEF,*** work provides an effective approach to improve the toughness of PEF which may expand its widespread application in packaging.

关键词： Poly(ethylene 2,5-furandicarboxylate) Polyamide11 Bio-based polymers Reactive compatibilization Toughening

The primitive matrices of sandwich semigroups of generalized circulant Boolean matrices

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Applied Mathematics(A Journal of Chinese Universities) 2013年第3期28卷 311-320页

作者： LIU Jian-ping CHEN jin-song College of Mathematics and Computer Science Fuzhou University College of Mathematics and Computer Science Hunan Normal University

Let Gn（C） be the sandwich semigroup of generalized circulant Boolean matrices with the sandwich matrix C and Gc（Jr~） the set of all primitive matrices in Gn（C）. In this paper, some necessary and sufficient conditions for A in the semigroup Gn（C） to be primitive are given. We also show that Gc（Jn） is a subsemigroup of Gn（C）.

关键词： generalized circulant Boolean matrix sandwich semigroup primitive matrix.