检索结果-南通市图书馆

Rare Metals 2010年第1期29卷 86-91页

作者： chu ke, jia chengchang, liang xuebing, and chen hui school of materials science and engineering, university of science and technology beijing, beijing 100083, china school of materials science and engineering University of Science and Technology Beijing

Two powder mixing processes, mechanical mixing （MM） and mechanical alloying （MA）, were used to prepare mixed Al/diamond powders, which were subsequently consolidated using spark plasma sintering （SPS） to produce bulk Al/diamond composites. The effects of the powder mixing process on the morphologies of the mixed powders, the microstructure and the thermal conductivity of the composites were investigated. The results show that the powder mixing process can significantly affect the microstructure and the thermal conductivity of the composites. Agglomerations of the particles occurred in mixed powders using MM for 30 min, which led to high pore content and weak interfacial bonding in the composites and resulted in low relative density and low thermal conductivity for the composites. Mixed powders of homogeneous distribution of diamond particles could be obtained using MA for 10 min and MM for 2 h. The composite prepared through MA indicated a high relative density but low thermal conductivity due to its defects, such as damaged particles, Fe impurity, and local interfacial debonding, which were mainly introduced in the MA process. In contrast, the composite made by MM for 2 h demonstrated high relative density and an excellent thermal conductivity of 325 W.m^-1.K^-1, owing to its having few defects and strong inter-facial bonding.

关键词： metal matrix composites thermal properties sintering powder mixing

Effect of particle size on the microstructure and thermal conductivity of Al/diamond composites prepared by spark plasma sintering

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2009年第6期28卷 646-650页

作者： chu ke jia chengchang liang xuebing chen hui GAO Wenji school of Material science and engineering University of Science and Technology Beijing Beijing 100083 China

Spark plasma sintering （SPS） was used to fabricate Al/diamond composites. The influence of diamond particle size on the microstructure and thermal conductivity （TC） of composites was investigated by combining experimental results with model prediction. The results show that both composites with 40 pan particles and 70 μm particles exhibit high density and good TC, and the composite with 70 μm particles indicates an excellent TC of 325 W.m^-1.K^-1. Their TCs lay between the theoretical estimated bounds. In contrast, the composite with 100 lain particles demonstrates low density as well as poor TC due to its high porosity and weak interfacial bonding. Its TC is even considerably less than the lower bound of the predicted value. Using larger diamond particles can further enhance thermal conductive performance only based on the premise that highly dense composites of strong interfacial bonding can be obtained.

关键词： metal matrix composites thermal properties sintering particle size

Predicted interfacial thermal conductance and thermal conductivity of diamond/Al composites with various interfacial coatings

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2011年第5期30卷 544-549页

作者： liang xuebing jia chengchang chu ke chen hui school of materials science and engineering University of Science and Technology Beijing Beijing 100083 China General Research Institute for Nonferrous Metals （GRINM） Beijing 100083 China

The interfacial thermal conductance （ITC） and thermal conductivity （TC） of diamond/Al composites with various coatings were theoretically studied and discussed. A series of predictions and numerical analyses were performed to investigate the effect of thickness, sound velocity, and other parameters of coating layers on the ITC and TC. It is found that both the ITC and TC decline with increasing coating thickness, especially for the coatings with relatively low thermal conductivity. Nevertheless, if the coating thickness is close to zero, or quite a small value, the ITC and TC are mainly determined by the constants of the coating material. Under this condition, coatings such as Ni, TiC, Mo 2 C, SiC, and Si can significantly improve the ITC and TC of diamond/Al composites. By contrast, coatings like Ag will exert the negative effect. Taking the optimization of interfacial bonding into account, conductive carbides such as TiC or Mo 2 C with low thickness can be the most suitable coatings for diamond/Al composites.

关键词： metallic matrix composites coatings diamonds thermal conductivity interfacial thermal conductance

Effect of sintering temperature on the microstructure and thermal conductivity of Al/diamond composites prepared by spark plasma sintering

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and materials 2010年第2期17卷 234-240页

作者： ke chu cheng-chang jia Xue-bing liang hui chen school of materials science and engineering University of Science and Technology Beijing Beijing 100083 China

Spark plasma sintering was used to fabricate Al/diamond *** effect of sintering temperature on the microstructure and thermal conductivity（TC） of the composites was investigated with the combination of experimental results and theoretical *** composite sintered at 550℃shows high relative density and strong interfacial bonding,whereas the composites sintered at lower（520CC） and higher（580-600℃） temperatures indicate no interfacial bonding and poor interfacial bonding,*** relative density and strong interfacial bonding can maximize the thermal conductivity of Al/diamond composites,and taking both effects of particle shape and inhomogeneous interfacial thermal conductance into consideration can give a fairly good prediction of composites＇ thermal conduction properties.

关键词： metal matrix composites thermal properties spark plasma sintering interface

Andrographolide Attenuates Noise-Induced Hearing Loss by Ameliorating Cochlear Inflammation

在线全文

学校读者我要写书评

暂无评论

World Journal of Traditional Chinese Medicine 2024年第2期10卷 204-212页

作者： Meng-Hua Li Wan-Qi Wang Li-Ting Zheng Meng Bing chen Yang chu Miao Qiao Zuo-Li Zhang Konduru Naveena Yong Pan Yun-Shi Zhang He Sun Xiao-hui Ma Xi Shi Artificial Auditory Laboratory of jiangsu Province Xuzhou Medical UniversityXuzhouChina key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan UniversityHaikouChina Department of ENT Beijing Friendship HospitalCapital Medical UniversityBeijingChina National key Laboratory of Chinese Medicine Modernization Tasly AcademyTasly Pharmaceutical Group Co.Ltd.TianjinChina Endoscopy Center Ankang People's HospitalAnkangChina Department of Respiratory Medicine Xuzhou Infectious Diseases HospitalAffiliated Hospital of Xuzhou Medical UniversityXuzhouChina Department of ENT The People's Hospital of Rongchang DistrictChongqingChina

Objective:This study aimed to explore andrographolide's mechanism of action and its protective effect on noise-induced hearing loss(NIHL).materials and Methods:A mice animal model for NIHL was established through exposure to broadband noise at 120 d B sound pressure level for 4 *** analysis and pharmacodynamic experiments were carried ***:Andrographolide enters the inner ear and effectively prevents hearing damage following noise exposure in the mice model for permanent hearing ***,treatment with andrographolide inhibited the excessive activation of inflammatory factors in the cochleae of noise-exposed ***:Andrographolide might be a promising candidate for auditory protective drug investigation.

关键词： Andrographolide anti-inflammatory auditory protection noise-induced hearing loss traditional Chinese medicine compound

Multidisciplinary and multiscale nanoscience research roadmap based on large scientific facilities

在线全文

学校读者我要写书评

暂无评论

science china Chemistry 2024年第8期67卷 2497-2523页

作者： Yuan Zeng Shuhan Zhang Yuecong Guo Yalin Cong Xu Ding Peihua Li Yunxiang Lin Wenzhi Ren hui Su Weigang Sun Liuxin Xu Guikai Zhang Shihua chen Yu chen Weiren cheng Shengqi chu Yong Guan Jinru Han Jie Lin Hengjie Liu Zheyi Liu Pan Luo Fanchun Meng Sicong Qiao Zongyin Song Ying Wang Zhao Wu chenyu Yang Meng Yang Shirui Yang Zi Yin Zhibin Yin Pengjun Zhang Hongyu Zhang Pingping Zheng jia Zhou Wanlin Zhou Pengfei An He cheng chunhai Fan Xingjiu Huang Yong Lei Lina Li Mu Li Qinghua Liu Shuming Peng Li Song Zhihu Sun Yangchao Tian Fangjun Wang Lihua Wang Liming Wang Shiqiang Wei Aiguo Wu chunlei Xiao Xueming Yang Panchao Yin Jing Zhang Mingxin Zhang Yaling Wang chunying chen CAS key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety New Cornerstone Science LaboratoryNational Center for Nanoscience and TechnologyBeijing 100190China university of Chinese Academy of sciences Beijing 100049China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Institutes of Physical science and Information technology Anhui UniversityHefei 230601China Ningbo key Laboratory of Biomedical Imaging Probe materials and technology Zhejiang International Cooperation Base of Biomedical Materials Technology and ApplicationCAS Key Laboratory of Magnetic Materials and DevicesNingbo Cixi Institute of Biomedical EngineeringZhejiang Engineering Research Center for Biomedical MaterialsNingbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China Advanced Energy science and technology Guangdong Laboratory Huizhou 516000China College of Chemistry and Chemical engineering Hunan Normal UniversityChangsha 410081China State key Laboratory of Luminescent materials and Devices South China Advanced Institute for Soft Matter Science and TechnologySouth China University of TechnologyGuangzhou 510640China beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China CAS key Laboratory of Separation sciences for Analytical Chemistry Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Institute of Advanced science Facilities Shenzhen 518107China State key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China State key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Acade

With the advancement of modern science and technology, large scientific facilities are increasingly oriented toward demand and application, and can be used for basic research as well as serving multiple disciplines. Developing large scientific facilities and related analytical technologies enhances understanding of large scientific facilities and popularizes their application in research across multiple disciplines. The combination of light or neutron sources from large scientific facilities and advanced analytical technologies can be achieved for materials structure information, dynamics study of chemical reactions, high dissociation of biomolecules, 3D visualization of energy materials or biological samples, etc. We first introduce the progress of domestic large scientific facilities of synchrotron radiation(SR) and free electron lasers(FELs) with different wavelengths and neutron *** further discuss the comparison between Chinese and typical foreign facilities in X-ray radiation from X-ray tubes, synchrotrons, X-ray FELs, and neutron sources based on physical parameters of light and neutron sources. In addition, we focus on the technological progress and perspectives combined with advanced X-ray radiation and neutron sources of large scientific facilities in china, especially in the nanoscience fields of energy catalysis and biological science. We hope that this roadmap will provide references on technology and methods to experimental users, as well as prospects for future development of technologies based on large research infrastructure facilities. Comprehensive studies and guidelines for basic research to practical application in various disciplines can be made with the assistance of large scientific facilities.

关键词： large scientific facilities synchrotron radiation FEL light sources neutron sources spectroscopic analysis methods X-ray imaging techniques structural information chemical dynamics

Helium Bubble Growth in He^(+) Ions Implanted 304L Stainless Steel Processed by Laser Powder Bed Fusion During Post-Irradiation Annealing at 600℃

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2022年第9期35卷 1509-1518页

作者： hui Liu Shiling Min Menglei jiang Fuzhong chu Ying Li Zhuoer chen Kai Zhang Juan Hou Aijun Huang school of materials science and Chemistry University of Shanghai for Science and TechnologyShanghai200093China Department of Industrial and materials science Chalmers University of Technology41326GothenburgSweden Monash Centre for Additive Manufacturing(MCAM) Monash UniversityNotting HillVIC3168Australia State key Laboratory of Nuclear Power Safety Monitoring technology and Equipment China Nuclear Power Engineering Co.Ltd.Shenzhen518172China

The abundancy of defect sinks in the microstructure of laser powder bed fusion(LPBF) processed austenitic stainless steels was found to be beneficial for helium *** the current study,the influence of the novel microstructure in LPBF processed 304 L on the helium bubble growth behaviour was investigated using transmission electron microscopy in samples implanted with He^(+) ion and post-irradiation annealing treated at 600℃ for 1 *** variants of LPBF processed 304 L samples were used,one in as-built condition and the other *** comparison between the two samples indicated that the helium bubble growth was inhibited and remained stable in the as-built sample but coarsened significantly in the solution-annealed *** sub-grain boundaries and oxide nano-inclusions acted as defect sinks to trap helium atoms and inhibited the growth of helium bubble in the as-built sample under the post-irradiation annealing conditions used.

关键词： Laser powder bed fusion Stainless steel Helium bubble growth Irradiation tolerance Nano oxide inclusions

Multiscale nanowire-microfluidic hybrid strain sensors with high sensitivity and stretchability

在线全文

学校读者我要写书评

暂无评论

npj Flexible Electronics 2018年第1期2卷 127-136页

作者： Songjia Han chunrui Liu huihua Xu Dongyuan Yao Kanghong Yan Huanliang Zheng hui-Jiuan chen Xuchun Gui Sheng chu chuan Liu State key Laboratory of Optoelectronic materials and Technologies and the Guangdong Province key Laboratory of Display Material and technology School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275China State key Laboratory for Optoelectronics materials and technology School of Materials Science and Engineering Sun Yat-Sen UniversityGuangzhou 510275China

Nanomaterials with low-dimensional morphology have been explored for enhancing the performance of strain sensors,but it remains difficult to achieve high stretchability and sensitivity *** this work,a composite structure strain sensor based on nanomaterials and conductive liquid is designed,demonstrated,and *** nanowire-microfluidic hybrid(NMH)strain sensor responds to multiscale strains from 4%to over 400%,with a high sensitivity and durability under small *** nanowires and carbon nanotubes are used to fabricate the NMH strain sensors,which simultaneously exhibit record-high average gauge factors and stretchability,far better than the conventional nanowire *** modeling of the electrical characteristics reveals that the effective conductivity percolation through the hybrid structures is the key to achieving high gauge factors for multiscale *** sensors can operate at low voltages and are capable of responding to various mechanical *** fixed on human skin,the sensors can monitor large-scale deformations(skeleton motion)and small-scale deformations(facial expressions and pulses).The sensors are also employed in multichannel,interactive electronic system for wireless control of *** demonstrations indicate the potential of the sensors as wearable detectors for human motion or as bionic ligaments in soft robotics.

关键词： strain gauge fluid

CEPC Technical Design Report

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

Radiation Detection technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin chen Danping chen Fuqing chen Fusan chen Gang chen Guoming chen Hua-Xing chen huirun chen Jinhui chen Ji-Yuan chen Kai chen Mali chen Mingjun chen Mingshui chen Ning chen Shanhong chen Shanzhen chen Shao-Long chen Shaomin chen Shiqiang chen Tianlu chen Wei chen Xiang chen Xiaoyu chen Xin chen Xun chen Xurong chen Ye chen Ying chen Yukai chen Zelin chen Zilin chen Gang chen Boping chen chunhui chen Hok chuen cheng Huajie cheng Shan cheng Tongguang cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-chung chu Xiaotong chu Ziliang chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi Ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong jianin AGH university of science and technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing beijing Computational science Research Center Beijing beijing Conveyi LTD Beijing beijing Glass Research Institute Co. LtdBeijing beijing Institute of technology Beijing beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced science and technology Beijing china Institute of Atomic Energy Beijing china Jiliang university HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china university of Geosciences Beijing china university of Geosciences WuhanHubei china university of Mining and technology XuzhouJiangsu china West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong Cockcroft Institute Daresbury Cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East china university Of science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV Linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The Linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2015)and the Conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Self-assembly construction of NiCo LDH/ultrathin g-C_(3)N_(4) nanosheets photocatalyst for enhanced CO_(2) reduction and charge separation mechanism 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

Rare Metals 2022年第6期41卷 2118-2128页

作者： An-Qi Zhou Jin-Man Yang Xing-Wang Zhu Xiang-Lin Zhu Jin-Yuan Liu Kang Zhong Han-Xiang chen Jin-Yu chu Yan-Sheng Du Yan-Hua Song Jun-Chao Qian Hua-Ming Li hui Xu school of the Environment and Safety engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China school of Environmental and Chemical engineering Jiangsu University of Science and TechnologyZhenjiang 212003China school of Chemistry Biology and Materials EngineeringSuzhou University of Science and TechnologySuzhou 215009China

Graphite phase carbon nitride(g-C_(3)N_(4))is a promising catalyst for artificial photocatalytic carbon dioxide(CO_(2))***,the fast carrier recombination and the inadequacy of the CO_(2)reduction active site in g-C_(3)N_(4)block the escalation of the *** this work,NiCo layered double hydroxide(NiCo LDH)nanoflowers were self-assembled with ultrathin graphite phase carbon nitride(g-C_(3)N_(4))by an ultrasonic stirring strategy utilizing the Zeta potential *** formed NiCo LDH/ultrathin g-C_(3)N_(4)nanosheets(LDH-CN)photocatalysts own the merits of rich active sites and Z-scheme heterojunction,which lead to the enhanced CO_(2)reduction activity and *** highest yields of CO and CH_(4)were 114.24 and 26.48μmol·h^(-1)·g^(-1),which were much greater than those of g-C_(3)N_(4)and ***,the enhanced selectivity for CO confirmed the strong redox ability in the LDH-CN caused by the *** heterojunction-induced built-in electrical field can promote the separation and migration of photoinduced electrons and *** study provides a theoretical basis for designing high-performance photocatalysts.

关键词： g-C_(3)N_(4) Photocatalytic Layered double hydroxide CO_(2)photoreduction Z-scheme