维普中文期刊产品整合服务
20篇 您的检索式:作者名="Weixin Ma"
    题名 作者 年代 出处 被引量
1Enhancing both selectivity and coking-resistance of a single-atom Pd1/C3N4 catalyst for acetylene hydrogenation显示文摘选择加氢是在化学升级的一个重要工业催化过程,在因为他们的高加氢活动,基于 Pd 的催化剂广泛地被使用的地方。然而,因为重焦炭形成,差的选择和短催化剂一生是主要担心。在这个工作,原子地驱散 Pd 原子成功地在 graphitic 碳氮化物上被综合(g-C 3 用原子层免职的 N 4) 。没有 Pd nanoparticle (NP ) ,改正错误的高角度的环形的黑暗地的扫描传播电子显微镜学(HAADF 茎) 证实了孤立的 Pd 原子的主导的存在形成。在在过量乙烯的乙炔的选择加氢期间, g-C 3 N 4-supported Pd NP 催化剂比常规 Pd/Al 2 O 3 和 Pd/SiO 2 催化剂。在原处, X 光检查光致核裂变光谱学表明可观的费用从 Pd NP 转到 g-C 3 N 4 多半在催化表演改进起一个重要作用。更给人深刻印象地,单个原子的 Pd 1/C3 N 4 催化剂展出了两种更高的乙烯选择和更高的 coking 抵抗。我们的工作证明单个原子的 Pd 催化剂是在加氢反应改进选择和焦炭抵抗的一个有希望的候选人。Xiaohui Huang Yujia Xia Yuanjie Cao Xusheng Zheng Haibin Pan Junfa Zhu Chao Ma Hengwei Wang Junjie Li Rui You Shiqiang Wei Weixin Huang Junling Lu 2017Nano Research2017,10,4:16
2Solution-processed copper nanowire flexible transparent electrodes with PEDOT:PSS as binder, protector and oxide-layer scavenger for polymer solar cells显示文摘nanowire (NW ) 拍摄的 Cu 的容易的氧化和表面粗糙是为他们在透明传导性的电极(TCE ) 的用法的主要瓶颈。此处,我们开发了一条灵巧、可伸缩起来的答案线路准备 Cu 由把 Cu NW 嵌进的基于 NW 的 TCE pre 涂 poly 变光滑(3,4-ethylenedioxythiophene ): poly (styrenesulfonate )(PEDOT : PSS ) 电影在上 poly (乙烯 terephthalate )( 宠物) 底层。那么获得的 Cu NW-PEDOT : PSS/PET 电影有低表面粗糙(在高度的 70 nm ) ,向氧化的高稳定性和好灵活性。最佳的 TCE 显示出 15 猯'T? 的一个典型的表电阻 ??Jianyu Chen Weixin Zhou Jun Chen Yong Fan Ziqiang Zhang Zhendong Huang Xiaomiao Feng Baoxiu Mi Yaowen Ma Wei Huang 2015Nano Research2015,8,3:10
3Status and development of high-power laser facilities at the NLHPLP显示文摘In this paper, we review the status of the multifunctional experimental platform at the National Laboratory of High Power Laser and Physics(NLHPLP). The platform, including the SG-II laser facility, SG-II 9th beam, SG-II upgrade(SG-II UP) facility, and SG-II 5 PW facility, is operational and available for interested scientists studying inertial confinement fusion(ICF) and a broad range of high-energy-density physics. These facilities can provide important experimental capabilities by combining different pulse widths of nanosecond, picosecond, and femtosecond scales. In addition, the SG-II UP facility, consisting of a single petawatt system and an eight-beam nanosecond system, is introduced including several laser technologies that have been developed to ensure the performance of the facility. Recent developments of the SG-II 5 PW facility are also presented.Jianqiang Zhu Jian Zhu Xuechun Li Baoqiang Zhu Weixin Ma Xingqiang Lu Wei Fan Zhigang Liu Shenlei Zhou Guang Xu Guowen Zhang Xinglong Xie Lin Yang Jiangfeng Wang Xiaoping Ouyang Li Wang Dawei Li Pengqian Yang Quantang Fan Mingying Sun Chong Liu Dean Liu Yanli Zhang Hua Tao Meizhi Sun Ping Zhu Bingyan Wang Zhaoyang Jiao Lei Ren Daizhong Liu Xiang Jiao Hongbiao Huang Zunqi Lin 2018High Power Laser Science and Engineering2018,6,4:8
4A chemo-mechanical model coupled with thermal effect on the hollow core–shell electrodes in lithium-ion batteries显示文摘Electrode is a key component to remain durability and safety of lithium-ion(Li-ion) batteries. Li-ion insertion/removal and thermal expansion mismatch may induce high stress in electrode during charging and discharging processes. In this paper, we present a continuum model based on COMSOL Multiphysics software, which involves thermal, chemical and mechanical behaviors of electrodes. The results show that,because of diffusion-induced stress and thermal mismatch, the electrode geometry plays an important role in diffusion kinetics of Li-ions. A higher local compressive stress results in a lower Li-ion concentration and thus a lower capacity when a particle is embedded another, which is in agreement with experimental observations.Bin Hu Zengsheng Ma Weixin Lei Youlan Zou Chunsheng Lu 2017Theoretical & Applied Mechanics Letters2017,7,4:6
5Modeling and Experimental Validation of the Electron Beam Selective Melting Process显示文摘Wentao Yan Ya Qian Weixin Ma Bin Zhou Yongxing Shen Feng Lin 2017Engineering2017,3,5:5
6Modeling of void closure in diffusion bonding process based on dynamic conditions显示文摘The dynamic conditions for plastic deformation mechanism,surface source mechanism,interface source mechanism and creep mechanism in the diffusion bonding process are proposed.Based on these dynamic conditions,a model for void closure in the diffusion bonding process is derived.The effects of diffusion bonding parameters on the bonding mechanisms are analyzed.For the diffusion bonding process of TC4 alloy,at a low diffusion bonding temperature or pressure,or for a short time,the interface source mechanism plays a main role.But,the creep mechanism is the dominant mechanism and operates until the diffusion bonding is fulfilled.As the diffusion bonding time increases,the surface source and interface source mechanism enhance and then stop at a certain stage of diffusion bonding,while the creep mechanism enhances continuously.As the diffusion bonding temperature or pressure increases,the interface source mechanism weakens and the other mechanisms enhance.The maximum and average errors between the calculated and the experimental results in the diffusion bonding for TC4 alloy are 12.86% and 5.79%,respectively.MA RuiFang LI MiaoQuan LI Hong YU WeiXin 2012Science China(Technological Sciences)2012,55,9:5
7Cu2O-Au Nanocomposites with Novel Structures and Remarkable Chemisorption Capacity and Photocatalytic Activity显示文摘在水的答案的 CuH nanoparticles 的分解成功地为 Cu2O nanoparticles 的准备作为一个新奇方法被开发了。特别地,我们发现在水的答案的 CuH nanoparticles 的分解能被 Au 胶体催化,形成 Cu2O-Au nanocomposites。产生 Cu2O-Au nanocomposites 的作文和结构被诱导地联合的血浆详细描绘了原子排放光谱学,粉末 X 光检查衍射, N2 吸附解吸附作用等温线,红外线的光谱学, X 光检查光电子光谱学,扫描电子显微镜学和传播电子显微镜学。他们向各种各样的染料分子的 visible-light-driven photocatalytic 活动也被调查了。取决于 Au : Cu 比率, Cu2O-Au nanocomposites 展览包括由多晶的 Cu2O,非结晶的 Cu2O 和 Au 组成的美丽的象花的 nanostructure 的不同新奇 nanostructures 胶体。我们建议 H2 的快产生的水泡在催化分解反应的功课期间驱使同时形成的 Cu2O 形成非结晶的弄弯的薄陪衬并且当装配的一个模板弄弯非结晶的 Cu2O,多晶的 Cu2O 和 Au 胶体的薄陪衬进一致 nanostructures,可能也行动。有 Cu 的 Cu2O-Au nanocomposite : 40 的 Au 比率向甲基橘子和酸橘子展出显著化学吸着能力和 visible-light-driven photocatalytic 活动 7 并且是有希望的化学吸着光催化综合催化剂。金属氢化物的催化分解可能与新奇 nanostructures 和性质为另外的金属 / 金属氧化物 nanocomposites 的制造开创一条新途径。Qing Hua Fucheng Shi Kai Chen Sujie Chang Yunsheng Ma Zhiquan Jiang Guoqiang Pan Weixin Huang 2011Nano Research2011,4,10:3
8Research on Application of 显示文摘Zheng Yuhong Chen Weixin Ma Wei 2013TCM health education path in high quality nursing activities in the Chinese guide of Chinese medicine2013,33,12:1
9The effect of solid diffusion surface alloying on properties of ZM5 magnesium alloy 显示文摘Ma Youping Xu Kewei Wen Weixin 2005Surface & Coatings Technology2005,190,23:1
10Development of low-coherence high-power laser drivers for inertial confinement fusion显示文摘The use of low-coherence light is expected to be one of the effective ways to suppress or even eliminate the laser–plasma instabilities that arise in attempts to achieve inertial confinement fusion.In this paper,a review of low-coherence high-power laser drivers and related key techniques is first presented.Work at typical low-coherence laser facilities,including Gekko XII,PHEBUS,Pharos III,and Kanal-2 is described.The many key techniques that are used in the research and development of low-coherence laser drivers are described and analyzed,including low-coherence source generation,amplification,harmonic conversion,and beam smoothing of low-coherence light.Then,recent progress achieved by our group in research on a broadband low-coherence laser driver is presented.During the development of our low-coherence high-power laser facility,we have proposed and implemented many key techniques for working with low-coherence light,including source generation,efficient amplification and propagation,harmonic conversion,beam smoothing,and precise beam control.Based on a series of technological breakthroughs,a kilojoule low-coherence laser driver named Kunwu with a coherence time of only 300 fs has been built,and the first round of physical experiments has been completed.This high-power laser facility provides not only a demonstration and verification platform for key techniques and system integration of a low-coherence laser driver,but also a new type of experimental platform for research into,for example,high-energy-density physics and,in particular,laser–plasma interactions.Yanqi Gao Yong Cui Lailin Ji Daxing Rao Xiaohui Zhao Fujian Li Dong Liu Wei Feng Lan Xia Jiani Liu Haitao Shi Pengyuan Du Jia Liu Xiaoli Li Tao Wang Tianxiong Zhang Chong Shan Yilin Hua Weixin Ma Xun Sun Xianfeng Chen Xiuguang Huang Jian Zhu Wenbing Pei Zhan Sui Sizu Fu 2020Matter and Radiation at Extremes2020,5,6:1
11In-situ design and construction of lithium-ion battery electrodes on metal substrates with enhanced performances:A brief review显示文摘For the ever-growing demand of advanced lithium-ion batteries, it is highly desirable to grow self-supported micro-/nanostructured arrays on metal substrates as electrodes directly. The in-situ growth of electrode materials on the conducting substrates greatly simplifies the electrode fabrication process without using any binders or conductive additives. Moreover, the well-ordered arrays closely connected to the current collectors can provide direct electron transport pathways and enhanced accommodation of strains arisen from lithium ion lithiation/delithiation. This article summarizes our recent work on design and construction of lithium-ion battery electrodes on metal substrates. An aqueous solution-based process and a microemulsion-mediated process have been respectively presented to control the kinetic and thermodynamic processes for the micro-/nanostructured array growth on metal substrates, with particular attention to CuO nanorod arrays and microcog arrays successfully prepared on Cu foil substrates. They can be directly used as binder-free electrodes to build advanced lithium-ion batteries with high energy, high safety and high stability.Weixin Zhang Yingmeng Zhang Zeheng Yang Gongde Chen Guo Ma Qiang Wang 2016Chinese Journal of Chemical Engineering2016,24,1:1
12Expression of metallothionein of freshwater crab ( Sinopotamon henanense ) in Escherichia coli enhances tolerance and accumulation of zinc, copper and cadmium显示文摘Yongji He Wenli Ma Yingjun Li Jinping Liu Weixin Jing Lan Wang 2014Ecotoxicology2014,,1:1
13On some propertise of distance measure显示文摘Fan Jiulun Ma Yuanliang Xie Weixin 2001Fuzzy sets and Systems2001,117,:1
14A novel cleanliness control method for disk amplifiers显示文摘As the key part for energy amplification of high-power laser systems,disk amplifiers must work in an extremely clean environment.Different from the traditional cleanliness control scheme of active intake and passive exhaust(AIPE),a new method of active exhaust and passive intake(AEPI)is proposed in this paper.Combined with computational fluid dynamics(CFD)technology,through the optimization design of the sizes,shapes,and locations of different outlets and inlets,the turbulence that is unfavorable to cleanliness control is effectively avoided in the disk amplifier cavity during the process of AEPI.Finally,the cleanliness control of the cavity of the disk amplifier can be realized just by once exhaust.Meanwhile,the micro negative pressure environment in the amplifier cavity produced during the exhaust process reduces the requirement for sealing.This method is simple,time saving,gas saving,efficient,and safe.It is also suitable for the cleanliness control of similar amplifiers.Yangshuai Li Bingyan Wang Panzheng Zhang Yanli Zhang Yanfeng Zhang Shenlei Zhou Weixin Ma Jianqiang Zhu 2020High Power Laser Science and Engineering2020,8,4:1
15Fengycin produced by Bacillus subtilis NCD-2 plays a major role in biocontrol of cotton seedling damping-off disease显示文摘Qinggang Guo Weixin Dong Shezeng Li Xiuyun Lu Peipei Wang Xiaoyun Zhang Ye Wang Ping Ma 2013Microbiological Research2013,,:1
16Generating oxygen adatoms on Au(997) by thermal decomposition of NO_2显示文摘We report our investigation of the interaction of NO2 with the Au(997)vicinal surface by high-resolution photoelectron spectroscopy using synchrotron radiation as the excitation source.At 170 K,both core-level and valence-band photoemission results illustrate the decomposition of NO2 on the Au(997)surface at low NO2 exposures,forming coadsorbed NO(a)and O(a)species.After annealing at 300 K,NO(a)desorbs from Au(997)whereas O(a)remains on the surface.Upon annealing at 750 K,we observe no signal for adsorbed oxygen on Au(997).These results clearly demonstrate that thermal decomposition of NO2 is an effective method to generate oxygen adatoms on Au(997)under ultrahigh-vacuum conditions.ZHANG YuLin WU ZongFang CHEN BoHao XU LingShun PAN HaiBin MA YunSheng JIANG ZhiQuan ZHU JunFa HUANG WeiXin 2010Chinese Science Bulletin2010,55,34:0
17Status of transjugular intrahepatic portosystemic shunt for portal hypertension in China:A national survey analysis显示文摘Aim:The transjugular intrahepatic portosystemic shunt(TIPS)procedure has been performed in China for 30 years,but our understanding of the status and difficulties associated with the use of TIPS for portal hypertension is incomplete.This study aims to investigate the current situation of the use of TIPS for portal hypertension,which should aid the development of TIPS in China.Methods:This study involved a questionnaire survey,initiated by the China Portal Hypertension Alliance(CHESS)to investigate the use of TIPS for portal hypertension in China.Questionnaires were released on the Internet between August 16,2022 and September 16,2022.Detailed information was collected from 545 hospitals contracted by the CHESS in China,which performed TIPS surgery in 2021.Results:The 545 hospitals covers the majority of hospitals in China that conduct TIPS intervention.In the survey,a total of 13,527 TIPS interventions were carried out with 94.1%(498/545)of them had a system of routine follow‐up after TIPS.The majority(42.6%[232/545])believed that the main indication of TIPS was the control of acute bleeding.Overall,48.1%(262/545)carried out early or pre‐emptive TIPS,53.0%(289/545)carried out TIPS for cavernous transformation of the portal vein,and 81.0%(441/545)chose routine embolization of collateral circulation during operation.Most used coils(97.0%[475/490])and biological glue(72.0%[353/490])as embolic materials,and 78.5%(428/545)routinely performed intraoperative portal pressure gradient measurements.When selecting TIPS stents,57.1%(311/545)chose viator‐specific stents,and 57.2%(312/545)chose conventional anticoagulation after TIPS.Conventional anticoagulation after TIPS is over a time interval of 3–6 months(55.4%[173/312]).The limitation of TIPS surgery is mainly its cost(72.3%[394/545])and insufficient understanding of the procedure by doctors in other related departments(77.4%[422/545]).Most of the hospital teams accept the use of domestic instruments in TIPS surgery(92.7%[505/545]).Conclusions:This survey shows that TIPS is an essential part of the treatment of portal hypertension in China.TIPS is widely used in Chinese patients with portal hypertension,and this survey presents a more comprehensive picture of the options and difficulties encountered in the implementation of TIPS.In the future,it is necessary to promote TIPS technology and further standardize surgical indications,routine operations,and instrument application.Haibo Shao Xinwei Han Jianbo Zhao Junhui Sun Zhuting Fang Bin Xiong Xiaoli Zhu Weixin Ren Min Yuan Shiping Yu Meng Niu Weifu Lv Xueqiang Zhang Chunqing Zhang Lei Li Xuefeng Luo Yusheng Song Yilong Ma Tong Dang Hua Xiang Yun Jin Hui Xue Guiyun Jin Xiao Li Jiarui Li Shi Zhou Changlu Yu Song He Lei Yu Hongmei Zu Jun Ma Yanming Lei Ke Xu Xiaolong Qi 2023Portal Hypertension & Cirrhosis2023,2,1:0
18MULTISENSOR DISTRIBUTED EXTENDED KALMAN FILTERING ALGORITHM AND ITS APPLICATION TO RADAR/IR TARGET TRACKING显示文摘A multisensor distributed extended Kalman filtering algorithm is presented for nonlinear system, in which the dynamic equation of the system and the equations of sensor’s measurements are linearized in the global estimate and global prediction respectively and the suboptimal global estimate based on all available information can be reconstructed from the estimates computed by local sensors based solely on their own local information and transmitted to the data fusion center. An analysis of the properties of the algorithm presented here shows that the global estimate has higher precision than the local one and smaller linearization error than the existing method. Finally, an application of the algorithm to radar/IR tracking of a maneuvering target is illustrated. Simulation results show the effectiveness of the algorithm.Cui Ningzhou Xie Weixin Yu Xiongnan Ma Yuanliang(Marine Engineering College, Northwestern Polytechnical University, Xi’an 710072) (Electronic Engineering College, Xidian University, Xi’an 710071) 1998Journal of Electronics(China)1998,15,1:0
19Revisiting H/Pt(111) by a combined experimental study of the H-D exchange reaction and first-principles calculations显示文摘We report a detailed investigation of the behavior of chemisorbed hydrogen atoms (Ha) on Pt(111) by a combination of an ex-perimental study of the Ha + Da reaction and first-principles calculations. The coverage-dependent adsorption and desorption behavior of Ha and Da on Pt(111) have been systematically established and can be well interpreted in terms of repulsive inter-actions between adsorbates. Ha adsorbs exclusively on the face-centered cubic (fcc) sites of Pt(111) at coverages not exceeding 1 monolayer (ML). With increasing Ha coverage,repulsive interactions between Ha increase,leading to a reduction in both the adsorption energy and the desorption activation energy. It is proposed that the lateral interactions within a Ha layer are partly induced by the local repulsive interactions due to high mobility of Ha on Pt(111). For the Ha + Da exchange reaction on Pt(111),it is found that Ha has a higher selectivity for HD formation than Da. Considering that Ha diffuses much faster than Da on Pt(111),we propose that the difference in diffusion rates between Ha and Da may determine the selectivity of Ha and Da in forming HD in the Ha + Da reaction on Pt(111).XU LingShun MA YunSheng ZHANG YuLin TENG BoTao JIANG ZhiQuan HUANG WeiXin 2011Science China Chemistry2011,54,5:0
20Recent Progress in MXene‑Based Materials for Metal‑Sulfur and Metal‑Air Batteries:Potential High‑Performance Electrodes显示文摘Rechargeable batteries,which are used for renewable energy storage,have paved the way for reducing the enormous pressure of the energy crisis and environmental pollution.Recently,promising electrode materials with high energy and power density and favorable electrochemical performance for energy conversion and storage have been developed to meet the ever-growing demand for renewable power for electric vehicles or grid applications.MXenes,which constitute an impressive two-dimensional transition metal carbide/carbonitride family,exhibit great energy storage potential based on their ideal specific surface area,excellent electrical conductivity,and superior chemical durability in batteries.The recent advances in MXenes and their composites for metal-sulfur batteries(specifically lithium-sulfur and sodium-sulfur batteries)and metal-air batteries(specifically lithium-air and zinc-air batteries)are comprehensively and systematically summarized in this review.Furthermore,the performance management strategies,next-stage research prospects,and remaining practical challenges for MXene-based materials in battery applications are discussed in detail.This review may provide some guidance for the development and application of MXene-based electrode materials in renewable electrochemical energy storage.Anmin Liu Xingyou Liang Xuefeng Ren Weixin Guan Tingli Ma 2022Electrochemical Energy Reviews2022,5,1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费