检索结果-南通市图书馆

Production and test of sPHENIX W/SciFiber electromagnetic calorimeter blocks in china

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第8期35卷 167-176页

作者： Xiao‑zhou Yu Xi‑Yang Wang Wei‑Hu Ma Shi‑Hong Fu Peng‑Fei Sun Jin‑Xing Song Wan‑Bing He Yang Shen Long Ma Jin‑Hui Chen Huan‑Zhong Huang Si‑guang Wang Jing zhou Xiao‑Mei Li Institute of Modern Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Physics and Ion‑Beam Application(MOE) Fudan UniversityShanghai 200433China Science and Technology on Nuclear Data Laboratory China Institute of Atomic EnergyBeijing 102413China Department of Physics and Astronomy University of CaliforniaLos AngelesCA 90095USA State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China

The sPHENIX experiment is a new generation of large acceptance detectors at the relativistic heavy ion collider at Brookhaven National Laboratory,with scientific goals focusing on probing the strongly interacting Quark–Gluon plasma with hard probes of jets,open heavy flavor particles,andγ*** EMCal detector,which covers the pseudo-rapidity region of|η|≤1.1,is an essential subsystem of *** this study,we focused on producing and testing EMCal blocks covering a pseudo-rapidity of|η|∈[0.8,1.1].These,in conjunction with the central pseudo-rapidity EMCal blocks,significantly enhance the sPHENIX physics capability of the jet andγparticle *** this paper,the detector module production and testing of sPHENIX W-powder/scintillating fiber(W/ScFi)electromagnetic calorimeter blocks are *** selection of the tungsten powder,mold fabrication,QA procedures,and cosmic ray test results are discussed.

关键词： sPHENIX Tungsten/scintillating fiber electromagnetic calorimeter Cosmic ray test

Enhanced activation of peroxymonosulfate on layered molybdenum disulfide loaded with Co-La bimetallic oxide for efficient degradation of chloramphenicol

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第9期43卷 4628-4635页

作者： Yu-Ning Fan Yun-Qiu Zhang San-Shuang Gao Zeng-Hui Bi Yin Wang Shu-Xing zhou Qian Liu Tian-Ping Lv guang-Zhi Hu Institute for Ecological Research and Pollution Control of Plateau Lakes School of Ecology and Environmental ScienceYunnan UniversityKunming 650504China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053China Institute for Advanced Study Chengdu UniversityChengdu 610106China

The use of transition metal-activated peroxymonosulfate(PMS)as an advanced oxidation technology has gained *** study developed a catalyst using cobaltDlanthanum bimetallic oxide supported on layered molybdenum disulfide(Mo S_(2.)as a *** CoDLa/Mo S_(2.catalyst was synthesised through coprecipitation,followed by calcination with an optimised metal ratio of Co:La=2.1 to activate PMS and degrade trace chloramphenicol(CAP)in *** chemical composition of the catalyst was confirmed using X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).At catalyst and PMS dosages of 0.1 and 0.5 g·L^(-1),respectively,the degradation rate of CAP was 95%with in 30 *** catalyst exhibitedstrong resistance to most interfering anions and maintained a high degradation rate at p H *** chromatographyDmass spectrometry analysis revealed the potential degradation pathways of CAP in the CoDLa/Mo S_(2.(2.1)/PMS *** other pollutants,such as oxytetracycline,complete degradation was achieved within 2. min,demonstrating the broad applicability of the CoDLa/Mo S_(2.(2.1)/PMS system for the degradation and removal of antibiotic organic contaminants.

关键词： catalyst molybdenum disulfide

Roles of Cu doping in YbZn_(2.Sb_(2. for thermoelectric performance enhancement

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第6期43卷 2869-2875页

作者： Xiong Zhang Hai-Hui Li Xiao-Liang Cao Bin Zhang Hong Wu Yu Zhang guang Han Guo-Yu Wang Hao-Shuang Gu Xiao-Yuan zhou College of Physics and Electronic Science Hubei Normal UniversityHuangshi 435002China Analytical and Testing Center Chongqing UniversityChongqing401331China School of Science Chongqing University of Posts and Telecommunications.Chongqing 400065 China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials-Hubei Key Laboratory of Ferro&Piezoelectric Materials and Devices Faculty of Physical and Electronic SciencesHubei UniversityWuhan 430062China College of Physics Chongqing UniversityChongqing 401331China

Recent research shows that increasing the carrier density after orbital alignment in AZn_(2.Sb_(2. (A=Ca,Yb,Eu,Sr,Mg)Zintl compounds yields remarkable results with regard to enhanced thermoelectric ***,research on carrier density increase via doping in these compounds is *** this study,we introduced Cu into the Zn sites in YbZn_(2.Sb_(2. and examined the thermoelectric properties.

关键词： properties doping performance

Global analysis on slope stability and its engineering application

在线全文

学校读者我要写书评

暂无评论

Science china(Technological Sciences) 2009年第2期52卷 507-512页

作者： ZHENG Hong1,2.& zhou ChuangBing3 1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan 430071, china 2.1} Three Gorges university, Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, Yi Chang 443002. china 3 School of Civil Engineering, Wuhan university, Wuhan 430072. china 1. State Key Laboratory of Geomechanics and Geotechnical Engineering Wuhan 430071 China 2. china Three Gorges university Key Laboratory of Geological Hazards on Three Gorges Reservoir Area Ministry of Education Yi Chang 443002 China 3. School of Civil Engineering Wuhan University Wuhan 430072 China

In hydraulic engineering, sometimes it is necessary to consider the stability of sliding bodies with lateral frictional boundaries. Neither the existing three dimensional limit equilibrium methods nor the commercial software products are able to treat such situations. The three dimensional factor of safety is accordingly underestimated; while the shearing strength based on the three dimensional back analysis is overestimated. In this study, the lateral boundaries are regarded as the part of the slip surface. Based on the expression of the normal pressure on the slip surface and the patch interpolation, a rigorous solution for the three dimensional limit equilibrium analysis is realized. Meanwhile, the proposed procedure is applied to the stability analysis of the slope with a cable platform on the right bank in Da Gang Shan hydraulic project under construction.

关键词： slope stability the limit equilibrium methods three dimensional problems

Evaluation of microRNA expression profiles in human sperm frozen using permeable cryoprotectant-free droplet vitrification and conventional methods

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2024年第4期26卷 366-376页

作者： Li-Xin Zhang Jing Mao Yan-Dong zhou guang-Yao Mao Run-Fa Guo Hong-Shan Ge Xia Chen Department of Histology and Embryology Medical SchoolNantong UniversityNantong 226001China Department of Reproductive Medicine The Affiliated Taizhou People’s Hospital of Nanjing Medical UniversityTaizhou School of Clinical MedicineNanjing Medical UniversityTaizhou 225300China.

For sperm cryopreservation,the conventional method,which requires glycerol,has been used for a long *** addition,the permeable cryoprotectant-free vitrification method has been continuously *** the differences of cryopreservation effects between the two methods have being studied,differences in microRNA(miRNA)profiles between them remain *** this study,we investigated the differences in miRNA expression profiles among conventional freezing sperm,droplet vitrification freezing sperm and fresh human *** also analyzed the differences between these methods in terms of differentially expressed miRNAs(DEmiRs)related to early embryonic development and paternal *** results showed no significant differences between the cryopreservation methods in terms of sperm motility ratio,plasma membrane integrity,DNA integrity,mitochondrial membrane potential,acrosome integrity,and ultrastructural ***,sperm miRNA-sequencing showed differences between the two methods in terms of the numbers of DEmiRs(2. and 19 with vitrification using a nonpermeable cryoprotectant and the conventional method,respectively)in postthaw and fresh sperm *** related to early embryonic development and paternal epigenetics mainly included common DEmiRs between the *** results showed that the differences between conventional freezing and droplet vitrification were minimal in terms of miRNA expression related to embryonic development and *** in sperm miRNA expression due to freezing are not always detrimental to embryonic *** study compared differences in miRNA expression profiles before and after cryopreservation between cryopreservation by conventional and vitrification *** offers a new perspective to evaluate various methods of sperm cryopreservation.

关键词： cryopreservation cryoprotectant-free vitrification early embryonic development paternal epigenetic inheritance sperm miRNAs sucrose

Progress of regional economic geography in china: a comparative study

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

Journal of Geographical Sciences 1999年第3期9卷 257-263页

作者： LIU Shu-guang CHEN Cai(Department of geography, Northeast {2. university, Changchun 13002., china)

Domestic and international literatures in economic geography in recent years showthat the disciplinary status of regional economic geography remains steay. Domesticliteratures prefer regional comprehensive development than that of international in theapplication fields. The process of establishing theoretical system with Chinese characteristocscontinues and has made some progress. The economic regions element theory, developmenttheory and management theory have been added to the already existed theory system. Theconstruction of comprehensive and integrated methodology system has initiated.

关键词： regional economic geography progress china

在线全文

学校读者我要写书评

暂无评论

原子激光传输的有效ABCD形式研究

物理学报 2004年第2期53卷 356-361页

作者：殷建玲刘承宜杨友源刘江范广涵华南师范大学激光运动医学实验室广州510631 香港教育学院科学系华南师范大学信息光电子科技学院广州510631

利用含适量子系统传播子的ABCD形式的理论 ,将品质因子守恒系统中的ABCD定律 ,推广到有效品质因子守恒的系统———原子激光的传输中 ,通过引入有效品质因子和有效参数qeff,利用Heisenberg图像得到传播子的有效ABCD形式 .由于原子激光... 详细信息

利用含适量子系统传播子的ABCD形式的理论 ,将品质因子守恒系统中的ABCD定律 ,推广到有效品质因子守恒的系统———原子激光的传输中 ,通过引入有效品质因子和有效参数qeff,利用Heisenberg图像得到传播子的有效ABCD形式 .由于原子激光内部原子间相互作用的存在 ,原有的品质因子不再守恒。

关键词：原子激光传输有效ABCD参数传播子品质因子守恒系统原子激光器量子力学薛定谔方程

Development and Physical Properties of Film of Wheat Gluten Cross-linked by Transglutaminase

在线全文

学校读者我要写书评

暂无评论

Journal of Wuhan university of Technology(Materials Science) 2005年第1期20卷 78-82页

作者：王金水 College of Food and Bioengineering South China University of TechnologyGuang zhou 510641China The Faculty of Food Engineering Henan University of TechnologyZhengzhou 450052China

Films were developed from the modified wheat glutens by microbial transglutamina se(MTGase, [E/S]=10u/g,15u/g and 2.u/g) in order to improve physical and barri er properties of the *** was used as a *** films prepared from the modified-glutens by MTGase show a lower elongation at break(E) and a water vapor permeability(WVP), and a higher tensile strength(TS) than the nati ve gluten *** the modified gluten films by different concentrations of MT Gase are immersed in water at 2.℃,their weight losses decreased significantly, and their water resistance increases obviously as expected, compared with the c ontrol gluten films. Moreover, an addition of glycerol as plasticizer greatly mo dified water vapor barrier and mechanical properties of the films.

关键词： wheat gluten microbial transglutaminase barrier properties tensile strengt h elongation at break

Two-dimensional metallic CoTe2.flakes for electrocatalytic hydrogen evolution

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第11期 5860-5867页

作者： Yu-Qing Zhao Qian Liu Bo-Jian zhou guang Yang Shao-Long Jiang School of Physics and Electronics Science Hunan University of Science and Technology College of Metallurgy and Energy North China University of Science and Technology Department of Physics Southern University of Science and Technology School of Integrated Circuit Science and Engineering Beihang University Quantum Science Center of guangdong-Hong Kong-Macao Greater Bay Area (guangdong)

Two-dimensional（2.） metallic 1T-CoTe2.as attracted considerable attention due to its fascinating physical properties and promising applications in electronics and ***,the production of highquality 2. 1T-CoTe2.till remains ***,we demonstrate a methodology to realize the facile synthesis of ultrathin,high-quality CoTe2.lakes with a thickness down to 2.3 nm on mica substrates by an ambient-pressure chemical vapor deposition（CVD） *** atomic arrangement is verified by scanning transmission electron *** theoretical calculations uncover the metallic characteristic of 1T-CoTe2.n the 2. ***,the CVD-derived 2. metallic CoTe2.lakes for the hydrogen evolution reaction（HER） catalyst exhibit admirable performance,such as an overpotential of186 mV at 10 mA·cm-2.a Tafel slope of 78 mV·dec-1,an exchange current density of 69 μA·cm-2.and negligible performance degradation after 1000 *** results establish novel approaches for the synthesis and HER application of 2. metallic 1T-CoTe2.

关键词：