检索结果-南通市图书馆

Zhongxian lin： Founder of color psychology in China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Protein & Cell 2018年第7期9卷 593-595页

作者： hai-feng li Xiao-Mei li Bu-Xin Han Department of Psychology Fujian Normal University Fuzhou 350117 China Key Lab of Mental Health Insitute of Psychology Chinese Academy of Sciences Beijing 100101 China

Professor Zhongxian lin （林仲贤, 1931-2011 ） is the founder and the leader of color psychology in China. He made pioneering researches on the determination of the color vision and the Chinese skin color. He is a member of executive committee of the AFRO-ASIAN Psychological Association （AAPA）, the National Color Standardization Committee, the New York Academy of Sciences, and the American Association for the Advancement of Science （AAAS）（Fig. 1）.

关键词：

Synthesis of novel cyclohexanediol-derived chiral phosphite ligands and their application in the Cu-catalyzed conjugate addition of organozinc to cyclic enones

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2016年第2期27卷 271-276页

作者： Zeng-Bo Pang hai-feng li Lai-Lai Wang State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100039 China

A series of novel chiral diphosphite ligands have been synthesized from（1R,2R）-trans-1,2-cyclohexanediol,（1S,2S）-trans-1,2-cyclohexanediol, racemic trans-1,2-cyclohexanediol and chlorophosphoric acid diary ester, and were successfully employed in the Cu-catalyzed asymmetric 1,4-conjugate addition of diethylzinc to cyclohexenone with up to 99% ee. It was found that ligand 1,2-bis[（R）-1,10-binaphthyl-2,2＇-diyl]phosphitecyclohexanediol 6a derived from racemic diol skeleton can show similar catalytic performance compared with ligand（1R,2R）-bis[（R）-1,1＇-binaphthyl-2,2＇-diyl]phosphitecyclohexanediol 6a＇ derived from enantiopure starting material. A significant dependence of stereoselectivity on the type of enone and the ring size of the cyclic enone was observed. Moreover, the configuration of the products was mainly determined by the configuration of the binaphthyl moieties of diphosphite ligands in the 1,4-addition of cyclic enones.

关键词： Racemic and chiral cyclohexanedio Phosphite ligands Organozinc Cyclic enones Cu-catalyzed conjugate addition

Unparticle Effects on Top Quark Pair Production at Photon Collider

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2009年第4期51卷 707-712页

作者： li hai-feng li Hong-Lei SI Zong-Guo YANG Zhong-Juan Department of Physics Shandong University Jinan 250100 China

The unparticle effects on tt^- production at the future photon collider are investigated. Distributions of tt^- invariant mass and that for transverse momentum of top quark with respect to Standard Model and unparticle production are predicted. An odd valley with scalar unparticle contribution appears for some values of du, which is due to the big cancellation between the contribution from SM and that from unparticle. This character may be used to study the properties of scalar unparticle. Our investigations also show that scalar unparticle may play a significant role in tt^- production at the photon collider if it exists.

关键词： unparticle top quark linear collider

Variational Approach to Study PT-Symmetric Solitons in a Bose–Einstein Condensate with Non-locality of Interactions

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2019年第4期36卷 10-14页

作者： Wei Qi hai-feng li Zhao-Xin liang Department of Applied Physics School of Arts and Sciences Shaanxi University of Science and Technology School of Science Xi'an Technological University Department of Physics Zhejiang Normal University

Considering the non-locality of interactions in a Bose–Einstein condensate, the existence and stability of solitons subject to a PT-symmetric potential are discussed. In the framework of the variational approach, we investigate how the non-locality of interactions affects the self-localization and stability of a condensate with attractive two-body interactions. The results reveal that the non-locality of interactions dramatically influences the shape,width, and chemical potential of the condensate. Analytically variational computation also predicts that there exists a critical negative non-local interaction strength(p_c liton solution for p_0 lity interactions on the stability of the solitons using the Vakhitov–Kolokolov stability criterion. It is shown that for a positive non-local interaction(p_0 > 0), there always exist stable bright solitons in some appropriate parameter regimes.

关键词： interactions stability influences

High-performance magnesium/sodium hybrid ion battery based on sodium vanadate oxide for reversible storage of Na^(+)and Mg^(2+)

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第9期96卷 79-88页

作者： Xiaoke Wang Titi li Xixi Zhang Yaxin Wang Hongfei li hai-feng li Gang Zhao Cuiping Han Institute of Applied Physics and Materials Engineering University of MacaoAvenida da UniversidadeTaipaMacao 999078China School of Physics and Technology University of JinanJinan 250022ShandongChina Songshan Lake Materials Laboratory Dongguan 523808GuangdongChina Faculty of Materials Science and Energy Engineering Shenzhen University of Advanced TechnologyShenzhen 518055GuangdongChina Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina

Magnesium ion batteries(MIBs)are a potential field for the energy storage of the future but are restricted by insufficient rate capability and rapid capacity ***-sodium hybrid ion batteries(MSHBs)are an effective way to address these ***,we report a new type of MSHBs that use layered sodium vanadate((Na,Mn)V_(8)O_(20)·5H_(2)O,Mn-NVO)cathodes coupled with an organic 3,4,9,10-perylenetetracarboxylic diimide(PTCDI)anode in Mg^(2+)/Na^(+)hybrid *** electrochemical cycling,Mg^(2+)and Na^(+)co-participate in the cathode reactions,and the introduction of Na^(+)promotes the structural stability of the Mn-NVO cathode,as cleared by several ex-situ ***,the Mn-NVO cathode presents great specific capacity(249.9 mA h g^(−1)at 300 mA g^(−1))and cycling(1500 cycles at 1500 mA g^(−1))in the Mg^(2+)/Na^(+)hybrid ***,full battery displays long lifespan with 10,000 cycles at 1000 mA g^(−1).The rate performance and cycling stability of MSHBs have been improved by an economical and scalable method,and the mechanism for these improvements is discussed.

关键词： Aqueous battery Hybrid ion battery Mg^(2+)/Na^(+)co-intercalation High-rate performance Organic-water hybrid electrolyte

Prevention effect of medical self-crosslinking sodium hyaluronate gel on epidural scar adhesion after laminectomy

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2014年第6期7卷 501-504页

作者： Hua liu hai-feng li Jian-Yuan Wang Orthopaedic Department of PLA 474 Hospital Spinal Surgery Department of of First Affiliated Hospital of Xinjiang University

Objective:To analyze the effect and medical sclf-crosslinking sodium hyaluronate gel on epidural scar adhesion after ***:A total of 24 New Zealand L5 laminectomy rabbits were randomly divided into four groups,group A as the control group without any treatment:group B covered by sodium hyaluronate gel;group C and group D covered by 0.5 and1.0 mL medical self-crosslinking sodium hyaluronate *** rabbits were scored at various time points after 2.4,6,8,12 weeks,then the formation of scar was ***:In Groups B,C,D loose scar tissue occurred after 2 weeks of the operation,scar tissues were significantly less than that in group A,with mild inflammatory *** 8 weeks,the scar tissues of group B were significantly more than that of groups C,*** two weeks,group B,C were back to the preoperative level;After 4 weeks,group D was back to the preoperative level;After four weeks,the CSEP of group A was increased significantly,which was significantly higher than that in groups B,C,*** motor function score of group A,group B and group C were the same as preoperative,but that in group D it was decreased significantly,and then it gradually *** 4 weeks it kept a stable *** motor function score of group A was decreased gradually after the operation,which kept a stable level after 4 weeks,the motor function score was significantly lower man that in groups B,C,***:Determination of somatosensory evoked potentials is sensitive indicator of spinal cord injury;Application of medical selfcrosslinking sodium hyaluronate gel is effective on epidural scar adhesion after laminectomy.

关键词： Animal Hyaluronic acid Laminectomy Induced potentials Somatosensory

Numerical simulation analysis of covering rock strata as mining steep-inclined coal seam under fault movement

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2011年第S3期21卷 556-561页

作者： MA feng-hai, SUN li, li Dun College of Civil and Architectural Engineering, Dalian University, Dalian 116622, China College of Civil and Architectural Engineering Dalian University Dalian 116622 China

The fault is one important factor for the stability of overburden strata caused by steeply inclined coal seam. The stress and displacement change of overburden strata caused by steeply-inclined coal seam mining activity under faulting was simulated by FLAC2D finite differential program on the basis of Zhaogezhuang mining example belonging to Kailuan Mining Group. From the results, the stress and displacement clouding image after mining became complex because of the fault, that is, a kind of weak structural plane. The stress concentration region concentrated around the goaf, and also around the fault plane. As the mining depth increases, the stress and displacement within the fault zone change significantly. This movement and deformation characteristic of overburden strata can provide theoretical basis for the similar mining condition.

关键词： fault steep-inclined coal seam numerical simulation overburden distortion

Effects of Quantum Fluctuations on PT-Symmetric Solitons of a Trapped Bose Gas

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2019年第7期71卷 773-778页

作者： Wei Qi liang-Wei Dong hai-feng li School of Arts and Sciences Shaanxi University of Science and TechnologyXi'an 710021China School of Science Xi'an Technological UniversityXi'an 710032China

Considering the quantum fluctuation effects,the existence and stability of solitons in a Bose-Einstein condensate subjected in a PT-symmetric potential are *** the variational approach,we investigate how the quantum fluctuation affects the self-localization and stability of the condensate with attractive two-body *** results show that the quantum fluctuation dramatically influences the shape,width,and chemical potential of the *** variational computation also predicts there exists a positive critical quantum fluctuation strength qc with each fixed attractive two-body interaction g0,if the quantum fluctuation strength q0 is bigger than qc,there is no bright soliton solution *** also study the effects of the quantum fluctuations on the stability of solitons using the Vakhitov-Kolokolov(VK)stability criterion.A robust stable bright soliton will always exist when the quantum fluctuation strength q0 belongs to the parameter regimes qc≥q0>0.

关键词： Bose-Einstein condensate PT-symmetric solitons quantum fluctuations

Simulation of gas-solid flow in sinter vertical cooling furnace

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2023年第11期30卷 2133-2142页

作者： Teng-fei Qi hai-feng li Jun-jie Sun Guo-jun Chen Yong-jie Zhang School of Metallurgy Northeastern UniversityShenyang110819LiaoningChina Key Laboratory for Ecological Metallurgy of Multi-Metallic Mineral(Ministry of Education) Northeastern UniversityShenyang110819LiaoningChina Technology Center Shanghai Meishan Iron and Steel Co.Ltd.Nanjing210039JiangsuChina Central Research Institute Baosteel Co.Ltd.Shanghai201900China

The velocity distribution of sinter and gas in vertical cooling furnace(VCF)has an important influence on gas-solid heat *** on the slot model of single hopper in the VCF of Meishan Iron and Steel Co.,Ltd.,the velocity and particle size distribution of sinter and the velocity and pressure distribution of gas were studied using a computational fluid dynamics-discrete element method model to obtain the gas-solid flow rule in the *** results showed that the velocity of sinter near the wall and the edge of vent cowl was lower than that in the rest of the same ***,the rectangular section of the vertical cooling furnace can be divided into a quasi-static zone,a plug flow zone and a convergent flow zone according to the flow velocity of the *** average particle size and the void fraction of sinter bed were distributed in"W"and"V"shape along the width direction,*** distribution of gas velocity in the furnace cavity was uneven,and the high-velocity area gradually changed from the center to the edge of the furnace cavity with the rise of *** the ratio of edge to center gas flow from 2.7∶1 to 0.7∶1 could improve the gas velocity,but could not change the gas velocity *** gas velocity distribution was more affected by the average particle size distribution of the sinter *** was suggested that measures need be taken to adjust it to improve the gas velocity distribution in the VCF.

关键词： Sinter Vertical cooling furnace Average particle size Void fraction Velocity distribution Gas distribution mode