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| 1 | Stability analysis of the temperature cracks in Xiaowan arch dam显示文摘In the Xiaowan arch dam there are massive temperature cracks nearly parallel to the dam axis. Obviously, whether the cracks may spread or not during the water storage process is one of the crucial factors for the safety of a dam. In this paper, a new type of crack element, in which the contact component is implicitly included into the concrete component, is proposed to simulate the effects of the existing cracks. The crack element is proved by numerical example to share the merits of both conventional contact elements and joint elements. With a finite element model of the cracked arch dam together with its rock foundation established, the transient displacement and stress fields of the dam are obtained. The complicated rock foundation, the construction process of the arch dam, the massive cracks, the transient temperature field, as well as the water storage process have been taken into consideration in the simulation. In addition to the global model, several sub-models for typical crack tips are also generated with finer elements placed around the tips. Thus, more accurate displacement and stress distribution are obtained by simultaneous sub-model simulation. Based on the calculation of stress intensity factor for crack tips by extension method, the temperature cracks in the Xiaowan arch dam are finally proved to be stable. | WANG WeiMing DING JianXin WANG GuoJin ZOU LiChun CHEN ShengHong | 2011 | Science China(Technological Sciences)2011，54，3： | 12 |
| 2 | Selective Oxidation of CO in Excess H_2 over Ru/Al_2O_3 Catalysts Modified with Metal Oxide显示文摘与金属氧化物(K2OandLa2O3 ) 修改的 Ru/Al2O3 催化剂从与硝酸盐在 Al2O3 支持上装载混合的 RuCl3 · n H2O 经由早期的湿受精方法被准备。催化剂的活动从改革气体生产的充满氢的煤气的溪流为公司(CO-PROX ) 的优先的氧化在模拟条件下面被评估,并且催化剂的表演被 XRD 和 TPR 调查。结果证明修改催化剂 Ru-K2O/Al2O3 和 Ru-La2O3/Al2O3 的活动温度被降低约 30 ° C 与纯 Ru/Al2O3,和活动温度范围相比被拓宽。Ru-K2O/Al2O3 和 Ru-La2O3/Al2O3 上的公司的变换在 140 160 ° C 超过 99% ,合适在充满氢的气体和 Ru-La2O3/Al2O3 的选择移开公司比在活跃温度范围的 Ru-K2O/Al2O3 的高。细微 methanation 反应在 220 ° C 并且在上面被检测。 | Xirong Chen Hanbo Zou Shengzhou Chen Xinfa Dong Weiming Lin | 2007 | Journal of Natural Gas Chemistry2007，16，4： | 4 |
| 3 | Effect of pretreatment methods on the performance of Cu-Zr-Ce-O catalyst for CO selective oxidation显示文摘用一起沉淀方法准备的 Cu-Zr-Ce-O 催化剂为公司选择氧化展出了更好催化的性能。有不同方法的 Cu-Zr-Ce-O 催化剂 pretreated 被 CO-TPR 和 XPS 技术学习。结果证明有氧的 Cu-Zr-Ce-O 催化剂 pretreated 展出了最好的催化表演并且有最宽的操作温度窗户,与从 160 ~ 200 ° C 的超过 99% 的公司变换。O 2 预告的处理在 Cu 活跃种类上引起了氧 storaged 的丰富并且支持了吸附的氧的变换进表面格子氧。它也改进了 Cu +/Cu2+ 的数量离子的对,然后为选择公司氧化在催化剂上便于 CuO 活跃种类的形成。 | Hanbo Zou Shengzhou Chen Weiming Lin | 2008 | Journal of Natural Gas Chemistry2008，17，2： | 3 |
| 4 | Optimal re-lay selection for physical-layer security in cooperativewireless networks显示文摘 | Zou Yulong Wang Xianbin Shen Weiming | 2013 | IEEE J Select Areas Commun2013，31，10： | 1 |
| 5 | Study on purification of culturally-eutrophicated water bodies by terrestrial higher plats planted on floating beds 显示文摘 | ZOU Guoyan SONG Xianfu WU Weiming | 1998 | Journal of Lake Sciences1998，10，： | 1 |
| 6 | URTK : Undiffer- enced Network RTK Positioning显示文摘 | Zou Xuan Ge Maorong Tang Weiming | 2012 | GPS Solution2012，，1： | 1 |
| 7 | Pay-it-forward gonorrhea and chlamydia testing among men who have sex with men in China:a study protocol for a three-arm cluster randomized controlled trial显示文摘Background:Gonorrhea and chlamydia testing rates are poor among Chinese men who have sex with men(MSM).A quasi-experimental study suggested that a pay-it-forward strategy increased dual gonorrhea/chlamydia testing among MSM.Pay-it-forward offers an individual a gift(e.g.,a free test)and then asks the same person if they would like to give a gift to another person.This article reports the protocol of a randomized controlled trial to evaluate dual gonorrhea/chlamydia test uptake and other outcomes among MSM in three arms-a pay-it-forward arm,a pay-what-you-want arm,and a standard of care arm.Methods:Three hundred MSM will be recruited at three HIV testing sites in Guangzhou and Beijing.Testing sites include two hospital-based MSM sexually transmitted diseases clinics and one MSM community-based organization.Eligible participants will be born biologically male,aged 16 years or older,reporting previous anal sex with another man,having never participated in the pay-it-forward program,without previous gonorrhea and chlamydia testing in the past 12 months,and residing in China.Following a cluster randomized design,every cluster of ten participants will be randomly allocated into one of three arms:(1)a pay-it-forward arm in which men are offered free gonorrhea and chlamydia testing and then asked whether they would like to donate('pay it forward')toward testing for future testers;(2)a pay-what-you-want arm in which men are offered free testing and told to decide how much to pay after receiving the test;(3)a standard of care arm in which men can pay the full price for dual gonorrhoea and chlamydia testing.The primary outcome is dual gonorrhoea/chlamydia testing as verified by administrative records.Secondary outcomes include incremental cost per test,incremental cost per diagnosis,community connectedness,and social cohesion.Primary outcome will be calculated for each arm using intention-to-treat and compared using one-sided 95%confidence intervals with a margin of 20%increase defined as superiority.Discussion:This study will examine the pay-it-forward strategy in comparison to the standard of care in improving test uptake for gonorrhea and chlamydia.We will leverage the cluster randomized controlled trial to provide scientific evidence on the potential effect of pay-it-forward.Findings from this study will shed light on novel intervention methods for increasing preventive health service utilization and innovate ways to finance it among communities.Trial registration:ClinicalTrials.gov,NCT03741725.Registered on 12 November 2018. | Tiange P.Zhang Fan Yang Weiming Tang Marcus Alexander Laura Forastiere Navin Kumar Katherine Li Fei Zou Ligang Yang Guodong Mi Yehua Wang Wenting Huang Amy Lee Weizan Zhu Peter Vickerman Dan Wu Bin Yang Nicholas A.Christakis Joseph D.Tucker | 2019 | Infectious Diseases of Poverty2019，8，4： | 1 |
| 8 | A Protective Mechanism for the Access Control System in the Virtual Domain显示文摘In traditional framework,mandatory access control(MAC) system and malicious software are run in kernel mode. Malicious software can stop MAC systems to be started and make it do invalid. This problem cannot be solved under the traditional framework if the operating system(OS) is comprised since malwares are running in ring 0 level. In this paper,we propose a novel way to use hypervisors to protect kernel integrity and the access control system in commodity operating systems. We separate the access control system into three parts: policy management(PM),security server(SS) and policy enforcement(PE). Policy management and the security server reside in the security domain to protect them against malware and the isolation feather of the hypervisor can protect them from attacks. We add an access vector cache(AVC) between SS and PE in the guest OS,in order to speed up communication between the guest OS and the security domain. The policy enforcement module is retained in the guest OS for performance. The security of AVC and PE can be ensured by using a memory protection mechanism. The goal of protecting the OS kernel is to ensure the security of the execution path. We implementthe system by a modified Xen hypervisor. The result shows that we can secure the security of the access control system in the guest OS with no overhead compared with modules in the latter. Our system offers a centralized security policy for virtual domains in virtual machine environments.Keywords: hypervisor; virtualization; memo- | Jinan Shen Deqing Zou Hai Jin Kai Yang Bin Yuan Weiming Li | 2016 | China Communications2016，13，11： | 1 |
| 9 | URTK: Undifferenced Network RTK Positioning 显示文摘 | ZOU Xuan GE Maorong TANG Weiming | 2013 | GPS Solutions2013，17，3： | 1 |
| 10 | Optimal relay selection for physical-layer security in cooperative wireless networks显示文摘 | Zou Yulong Wang Xianbin Shen Weiming | 2013 | IEEE Journal on Selected Areas in Communications2013，31，10： | 1 |
| 11 | Optimal Relay Selection for Physical-layer Security in Cooperative Wireless Networks显示文摘 | Zou Yulong Wang Xianbin Shen Weiming | 2013 | IEEE Journal on Selected Areas in Communications2013，31，10： | 1 |
| 12 | Research on the discrimination methods of algae based on the fluorescence excitation spectra显示文摘The excitation spectra of chlorophyll (Chl) fluorescence can be used to differentiate phytoplankton populations at phylum level in vivo and in situ within a few minutes.The investigated phytoplankton divisions (Dinophyta,Bacillariophyta,Chrysophyta,Cyanophyta,Cryptophyta,Chlorophyta) are each characterized by a specific composition of photosynthetic antenna pigments and,consequently,by a specific excitation spectrum of the Chl fluorescence.Norm excitation spectra (emission of 680 nm and excitation of 400–600 nm) of every division were obtained from several species per division by a F4500 fluorescence spectrophotometer.Fisher’s linear discriminant analysis of the norm spectra shows that the divisions could be discriminated.The discrimination method,established by multivariate linear regression and weighted least squares,was used to differentiate the phytoplankton samples cultured in the laboratory and samples collected from the Jiaozhao Bay at division level.The correctly discriminated samples were more than 94% for single algal species ones,more than 84% for simulatively mixed ones,more than 83% for real mixed ones and 100% for samples collected from the Jiaozhou Bay for the dominant species.The method for phytoplankton differentiation described here can be applied to routine checking by fluorescence spectrophotometer,and benefit the monitoring and supervision tasks related to phytoplankton populations in the marine environments. | HU Xupeng SU Rongguo ZOU Weiming REN Shijun WANG Hongtao CHAI Xiaoping WANG Yiming | 2010 | Acta Oceanologica Sinica2010，29，4： | 1 |
| 13 | A general method for numerical Green's function in arbitrarily layered soils显示文摘A straightforward approach is developed to calculate Green's function of a point current source in horizontal multi-layer soils. The sampling value of the coefficient of Green's function is obtained in an iterative way in terms of the equation group satisfying the pertinent boundary value problem. Further, the closed-form expression of multilayered soil Green's function can be given by the vector matrix pencil technology. The numerical results are in agreement with those by using other softwares. The approach proposed here is applicable to grounding problems with the structure of arbitrarily layered soil without needing the analytical expression of Green's function. | ZOU Jim , HE Jinliang, ZENG Rong, SUN Weiming and YU Gang(Department of Electrical Engineering, Tsinghua University, Beijing 100084, China) | 2003 | Progress in Natural Science:Materials International2003，13，8： | 1 |
| 14 | Promoting Effect of ZnO on the Catalytic Performance of CoZSM-5 for CO_(2)-Assisted Dehydrogenation of Ethane显示文摘Aseries of ZnO-modified cobaltous ion exchanged ZSM-5 catalysts is prepared using incipient wetness impregnation and characterized by X-ray diffraction(XRD),N2 adsorption,transmission electron microscopy(TEM),UV-Vis diffuse reflectance spectroscopy(DR UV-Vis),X-ray photoelectron spectroscopy(XPS),pyridine-adsorbed Fourier transform infrared(Py-IR)and Raman.Their catalytic performance towards CO_(2)-assisted dehydrogenation of ethane to ethylene has been evaluated.The addition of ZnO onto CoZSM-5 obviously improved the yield of ethylene as well as the conversion of CO_(2).The promoting effect is attributed to the good activity of ZnO for the reverse water gas shift(RWGS)reaction,which enhances the coupling between RWGS and ethane dehydrogenation. | HE Huan ZOU Zhengxi HUA Weiming YUE Yinghong GAO Zi | 2023 | Chemical Research in Chinese Universities2023，39，6： | 0 |
| 15 | Gene and protein expression of proteinase-activated receptor-1, 2 in a murine model of acute graft vs host disease显示文摘Proteinase-activated receptors(PARs)are a novel subclass of seven transmembrane-spanning,G protein-coupled receptors.PAR-1 and PAR-2 are widely expressed in a variety of cells and are found to be involved in many physiological and pathological processes includ-ing inflammation and immune response.However,little is known about the function of PAR-1,2 in acute graft vs host disease(GVHD).In the present study,wefirst detected the expression of PAR-1,2 protein and mRNA in a murine model of acute GVHD using the methods of immunohis-tochemistry,Western blot and quantitative real-time polymerase chain reaction(PCR).Syngeneic hematopoie-tic stem cell transplantation(HSCT)mice served as controls.The relative gene expression level of PAR-1 was significantly increased in the skin,liver,small intestine of allogeneic HSCT mice(in skin:0.039�0.013 vs 0.008�0.002 of controls,P=0.009;in liver:0.165�0.006 vs 0.017�0.006 of controls,P=0.004;in small intestine:0.215�0.009 vs 0.016�0.002 of con-trols,P=0.003),but not in the stomach,lung and kidney of allogeneic HSCT mice(P>0.05).PAR-2 mRNA expression in the liver and small intestine of allogeneic HSCT mice(in liver:0.010�0.002 vs 0.003�0.001 of controls,P=0.008;in small intestine:0.006�0.001 vs 0.003�0.001 of controls,P=0.024)was increased significantly,but PAR-2 mRNA expression in the other organs(P>0.05)was not found to be significantly elevated.PAR-1,2 protein expression was in accordance with the mRNA expression,as shown by Western blot.Using immunohistochemistry the present study demon-strated that there was strong PAR-1,2 immunoreactivity in the epithelial cell and vascular endothelial cell of target organs of acute GVHD.Ourfindings of markedly increased expression of PAR-1,2 in target organs of acute GVHD suggest that PAR-1 and PAR-2 may play an important role in the pathogenesis of acute GVHD. | Quan LI Jian ZHANG Weiming LI Ping ZOU | 2009 | Frontiers of Medicine2009，3，3： | 0 |
| 16 | Direct growth of globally aligned graphene nanoribbons on reconstructed sapphire substrate using PECVD显示文摘Graphene nanoribbons(GNRs)are regarded as an ideal candidate for beyond-silicon electronics.However,synthesis of aligned GNR arrays on insulating substrates with high efficiency is challenging.In this work,we develop a facile strategy,involving KOH pre-treatment and high-temperature annealing,to construct parallel steps on the two-fold symmetry a-plane sapphire substrate.Horizontal GNRs as narrow as 15.1 nm with global alignment across a region of 20 mm^(2)are then grown on the step edgeenriched substrate through plasma enhanced chemical vapor deposition(PECVD)method.GNRs align well along the atomic steps on sapphire([■]direction)with their widths and densities swiftly adjustable by step morphology modification on substrate surface.A step-edge confined growth mechanism is proposed,attributing the constraint on the nanoribbon broadening to a relatively low growth temperature in PECVD,which restrains the activation energy to suppress GNRs across step edges on sapphire and prevents detrimental nanoribbon widening.The results provide a new perspective for scalable synthesizing well aligned nanoribbons of other two-dimensional materials. | Mingzhi Zou Weiming Liu Yue Yu Shanshan Wang Bo Xu Liu Qian Tianze Tong Jin Zhang | 2023 | Nano Research2023，16，1： | 0 |
| 17 | Rice cultivation on floating-beds in different natural waters显示文摘Following the success in rice cultivation on floating-beds in natural water in 1990, the ecological adaptability of growing rice on floatingbeds was studied during the period of 1991-1993. Experiments were conducted in five different types of natural waters in Zhejiang Province from 28°35′ to 30°58′N and from 119°05′ to 121°11′E. | SONG Xiangfu WU Weiming JING Qianyu YING Huodong ZHU Ming ZOU Guoyan CNRRI,Hangzhou 310006,China | 1997 | Chinese Rice Research Newsletter1997，5，2： | 0 |
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