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1Aerodynamic design for China new high-speed trains显示文摘High-speed trains have very complex running environments,which contain single-train running in open air,two-trains passing by in open air,single-train running in tunnel and two-trains passing by in tunnel.When the environment wind appears,crosswind effects must be considered.Aerodynamic design of high-speed trains mainly aims at the drag,lift,moment,impulse pressure waves,aerodynamic noise,etc.at typical running conditions.In the paper,the aerodynamic design processes of CRH380A and 380B are introduced and the aerodynamic performances of different designs are analyzed and compared.Wind tunnel experiments and running tests indicate that the new generation of high-speed trains have excellent aerodynamic performances.YANG GuoWei GUO DiLong YAO ShuanBao LIU ChengHui 2012Science China(Technological Sciences)2012,55,7:18
2An overview of design for CSNS/RCS and beam transport显示文摘The China Spallation Neutron Source (CSNS) is the first accelerator-based pulsed neutron source in China. Its accelerators are made up of an 80 MeV H- linac, a Rapid Cycling Synchrotron (RCS) and two beam transport lines. RCS accumulates and accelerates protons to the design energy of 1.6 GeV, and extracts high energy beam to strike the target. The overview of RCS is presented, and the key problems of the physics design are discussed. The two beam transport lines, from linac to RCS and from RCS to the target, are also introduced.WANG Sheng AN YuWen FANG ShouXian HUANG Nan LIU WeiBin LIU YuDong QIN Qing QIU Jing WANG Na XU Gang XU ShouYan YU ChengHui 2011Science China(Physics,Mechanics & Astronomy)2011,54,S2:11
3Influence of CaCO_3 Whisker Content on Mechanical and Tribological Properties of Polyetheretherketone Composites显示文摘机械并且 polyetheretherketone 的 tribological 性质(偷看) 在 0-45%(wt %) 的各种各样的内容充满 CaCO_3 络腮胡子的 composites 被调查。合成标本被塑造的压缩准备。composites 测试在的 Tribological 干燥对碳钢戒指穿模式在一台 MM200 block-on-ring 仪器上被执行。数据在上整洁偷看也为比较被包括。CaCO_3 络腮胡子的包括影响了最机械的性质和磨擦,这被观察并且以一个有益的方法穿。随 CaCO_3 络腮胡子内容的增加,磨擦系数连续地减少了但是趋势在穿改变的性能。特定穿率作为 1.28 X 10 ~ 显示出最小(为 15percent CaCO_3 络腮胡子包括的 -6) mm^3/Nm 为进一步的 CaCO_3 络腮胡子增加由慢增加列在后面。磨擦应用的 Interms 当 tribological 和机械性质被联合时, CaCO_3 络腮胡子在的最佳的内容充满偷看应该被推荐为 15% 到 20percent。相当好的关联在磨擦系数对弯曲模量被观察并且穿率对弯曲强度,证实弯曲性质证明是控制在现在的工作的参数的最重要的摩擦学。Youxi LIN Chenghui GAO Ning LI 2006Journal of Materials Science & Technology2006,22,5:8
4Developing a bacteriophage cocktail for biocontrol of potato bacterial wilt显示文摘Bacterial wilt is a devastating disease of potato and can cause an 80% production loss. To control wilt using bacteriophage therapy, we isolated and characterized twelve lytic bacteriophages from different water sources in Kenya and China. Based on the lytic curves of the phages with the pathogen Ralstonia solanacearum, one optimal bacteriophage cocktail, P1, containing six phage isolations was formulated and used for studying wilt prevention and treatment efficiency in potato plants growing in pots. The preliminary tests showed that the phage cocktail was very effective in preventing potato bacterial wilt by injection of the phages into the plants or decontamination of sterilized soil spiked with R. solanacearum. Eighty percent of potato plants could be protected from the bacterial wilt(caused by R. solanacearum reference strain GIM1.74 and field isolates), and the P1 cocktail could kill 98% of live bacteria spiked in the sterilized soil at one week after spraying.However, the treatment efficiencies of P1 depended on the timing of application of the phages, the susceptibility of the plants to the bacterial wilt, as well as the virulence of the bacteria infected,suggesting that it is important to apply the phage therapy as soon as possible once there are early signs of the bacterial wilt. These results provide the basis for the development of bacteriophagebased biocontrol of potato bacterial wilt as an alternative to the use of antibiotics.Cuihua Wei Junli Liu Alice Nyarnbura Maina Francis B Mwaura Junping Yu Chenghui Yan Ruofang Zhang Hongping Wei 2017Virologica Sinica2017,32,6:8
5A Preliminary Review of Metallogenic Regularity of Molybdenum Deposits in China显示文摘Molybdenum is one of the dominant minerals in China because of its rich reserves.In recent years,outstanding breakthroughs have been made in molybdenum prospecting in China,and the distribution of molybdenum deposits in China is found to have a 'planar pattern'.In general,the molybdenum deposits are concentrated in eastern China,including the largest molybdenum reserves of Henan Province.In terms of the scale of molybdenum deposits,the identified resources of the superlarge deposits are the most important,which account for about 53% of the whole country,and those of the large deposits account for about 30%,those of the medium-sized deposits account for about 14%,those of the small-sized deposits,mine spots and mineralization account for about 3%.The molybdenum deposits are mainly classified as porphyry type,skarn type,hydrothermal(vein) type and sedimentary(metamorphic) type in genesis,and the identified resources of these types account for 85.75%,8.83%,2.79%and 2.63% of the total resources respectively.Based on the statistics of precise chronology data of molybdenites Re-Os,Mo-mineralization can be divided into 6 periods in Chinese geological history,which are Precambrian(>800 Ma),Cambrian-Silurian(540-415 Ma,Caledonian),Devonian-Permian(400-290 Ma,Hecynian),Triassic(260-200 Ma,Indosinian),Jurassic-Cretaceous(195-70 Ma,Yanshanian) and Paleogene-Neogene(65-10 Ma,Himalayan).Mo mineralization during the Yanshanian period is the strongest one,in which about 76.69% of the Chinese total identified resources was formed.The second is the Himalayan period.According to spatial-temporal distribution characteristics of molybdenum deposits,the metallogenic regularity of molybdenum deposits was preliminarily summarized,and 41 level-Ⅲ molybdenum-forming belts,13 level-Ⅱ molybdenum-forming provinces and 4 level-Ⅰ molybdenum-forming domains were ascertained in the mainland of China.There are 39 metallogenic series of and 60 sub-series of molybdenum deposits with molybdenum as the dominant metal and corresponding representative molybdenum deposits proposed.Metallogenic lineages of molybdenum deposits were also established.Spatial-temporal evolution of different types of molybdenum deposits,and the relationship between Mo-mineralization and tectonic evolution have been discussed in this paper.On this basis,the authors think that element Mo is an effective tracer for recording the crustal evolution history of China.At present,there are some problems in the exploration of Mo deposits in China,such as uneven exploration degrees in eastern and western China,shallow exploration depth,low and uneven grade,complex associated components,difficulty of mineral development and utilization,increasing costs of prospecting,and so on.According to successful experience of superficial and deep prospecting and considering also the discussion above,some suggestions are proposed for the prospecting of molybdenum deposits in the future.HUANG Fan LIU Xinxing WANG Denghong WANG Chenghui 2015Acta Geologica Sinica(English Edition)2015,89,3:7
6Leader-follower Consensus of Upper-triangular Nonlinear Multi-agent Systems显示文摘This paper is concerned with the leader-follower consensus problem by using both state and output feedback for a class of nonlinear multi-agent systems. The agents considered here are all identical upper-triangular nonlinear systems which satisfy the Lipschitz growth condition. First, it is shown that the leader-follower consensus problem is equivalent to the control design problem of a high-dimensional multi-variable system.Second, by introducing an appropriate state transformation, the control design problem can be converted into the problem of finding a constant parameter, which can be obtained by solving the Lyapunov equation and estimating the nonlinear terms of the given system. At last, an example is given to verify effectiveness of the proposed consensus algorithms.Chenghui Zhang Le Chang Xianfu Zhang 2014IEEE/CAA Journal of Automatica Sinica2014,1,2:7
7Robust stability and H-infinity control for uncertain discrete-time Markovian jump singular systems显示文摘The robust stability and stabilization, and H-infinity control problems for discrete-time Markovian jump singular systems with parameter uncertainties are discussed. Based on the restricted system equivalent (r.s.e.) transformation and by introducing new state vectors, the singular system is transformed into a discrete-time Markovian jump standard linear system, and the linear matrix inequality (LMI) conditions for the discrete-time Markovian jump singular systems to be regular, causal, stochastically stable, and stochastically stable with γ-disturbance attenuation are obtained, respectively. With these conditions, the robust state feedback stochastic stabilization problem and H-infinity control problem are solved, and the LMI conditions are obtained. A numerical example illustrates the effectiveness of the method given in the paper.Shuping MA Chenghui ZHANG Xinzhi LIU 2008控制理论与应用(英文版)2008,6,2:6
8Surface modification of hydrophobic NaYF_4:Yb,Er upconversion nanophosphors and their applications for immunoassay显示文摘β-NaYF4:Yb,Er upconversion nanophosphor (UCNP) is known as one of the most efficient NIR-to-visible upconversion materials, which shows great potential in bioanalytical chemistry and bioimaging. However, its applications are greatly limited due to its low water dispersibility and thus poor biocompatibility. In this paper, poly(acrylic acid) (PAA)-based ligand exchange strategies are carried out to modify oleic acid-capped hydrophobic β-NaYF4:Yb,Er UCNPs into hydrophilic ones. After efficient surface modification, the presence of free carboxylic acid groups on the surfaces of UCNPs results in high solubility in water, and also allows further conjugation with NH2-containing biomolecules. Facilitated by the covalent linkage between the-COOH groups on UCNPs surfaces and -NH2 groups in antigen/antibody, a sensitive immunosensor is constructed by using PAA-functionalized β-NaYF4:Yb,Er UCNPs as biolabels. Through monitoring the upconversion fluorescence intensity or fluorescent imaging of the final immunocomplexes, high sensitivity is achieved for the proposed immunoassay and as low as 0.1 ng/mL goat anti-human immunoglobulin G (IgG) can be detected, which suggests that PAA-modified UCNPs may serve as an ideal candidate for use as bioanalysis and bioimaging probes.LIU ChengHui, WANG Zhe, WANG XiaoKe & LI ZhengPing Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China 2011Science China Chemistry2011,54,8:6
9A Preliminary Review of Metallogenic Regularity of Silver Deposits in China显示文摘China has widely distributed silver deposits,and is rich in silver resources.Although silver deposits are mainly associated with Pb-Zn deposits,a number of independent silver deposits have also been discovered in recent years.Silver deposits include different types,such as submarine volcanism and continental volcanism related type,intrusion related type,and sedimentary related type.This study summarized the metallogenic regularity of China's silver deposits systematically based mainly on the data from 490 silver deposits.It is shown that submarine volcanic sedimentary type,continental volcanic or sub-volcanic type,skarn type,hydrothermal type(including vein type and stratabound type),sedimentary metamorphic type,sedimentary type and regolith type should be regarded as the most important prediction types of silver deposit.A total of 32 silver mineralization belts and 111 silver concentration areas have been delineated.The map of 'Spatial distribution of silver mineralization belts in China' and other series of maps finished in this study may provide a theoretical basis for the evaluation and prognosis of silver resources potential in China.JIANG Biao ZHANG Daquan WANG Denghong WANG Chenghui CHEN Yuchuan BAI Ge 2015Acta Geologica Sinica(English Edition)2015,89,3:5
10Nitriding of Hard Fe Electrodepositionand Its Effects on Wear Resistance显示文摘Nitriding is employed for the hard Fe electrodeposition to produce a hard-facing and antiwear coating. It only takes 1 h for the hard Fe coating, which is much shorter than nitriding the Fe and steel. The results showed that the nitriding can increase the microhardness, wear resistance of the coating, as well as the bonding strength of the coating with the substrate. Additionally it can eliminate the brittleness, turn the internal stress of the coating from tension to compression. The wear resistance of the nitrided Fe coating is 4.6 times as high as that of Cr coating. It is simple and economic to combine hard be electroplating and nitriding, which is a good technology of the tribological surface modification.Chenghui GAO, Dajian CHEN and Baiyang ZHOU Department of Mechanical Engineering, Fuzhou University, Fujian, Fuzhou 350002, China 2001Journal of Materials Science & Technology2001,17,2:5
11New Zircon U-Pb Age of the Super-Large Lijiagou Spodumene Deposit in Songpan Garze Fold Belt, Eastern Tibet: Implications for Early Jurassic Rare-Metal Polymetallic Event显示文摘The Songpan-Garze Fold Belt (SGFB), located in theeastern part of the Tibet Plateau and west of the SichuanBasin, is an important pegmatite province in China. Somefamous pegmatite type deposits occur in the SGFB,including the Xuebaoding, Jiajika, Keeryin rare metaldeposits and Danba muscovite deposit (Li Jiankang et al.,2015).FEI Guangchun TIAN Jingjing YANG Jiyi GAO Jianguo TANG Wenchun LI Jian GU Chenghui 2018Acta Geologica Sinica(English Edition)2018,92,3:5
12A Preliminary Review of Metallogenic Regularity of Copper Deposits in China显示文摘Copper resources in China are rich, but imported copper products are still required. Researches on metallogenic regularity of major types of copper deposits by geologists have involved in worldwide classification, significant copper belts, representative copper deposits, etc. Studies on metallogenic regularity of copper deposits in China also have made achievements with a long-term work. Combined with latest exploration advances obtained in recent ten years, this review aims to conclude the achievements of researches on copper metallogenic regularity in China. Based on data of 814 copper deposits and other ore(mineralized) occurrences, ten prediction types of copper deposits have been suggested. Porphyry and skarn copper ores are taken as the key targets. Porphyry copper deposits are the most important one which concentrate in Gangdese, Changdu-Sanjiang, Dexing and East Tianshan. The Cenozoic and Mesozoic are the major metallogenic epochs. Four main metallogenic epochs are been studied based on the copper ore geochronological data including Precambrian Era(Archean and Proterozoic), Paleozoic Era, Mesozoic Era and Cenozoic Era. Based on the study of metallogenic series of ore deposits in China, twenty-seven metallogenic series of copper deposits are proposed. This is suggested to deepen the study of metallogenic regularity of copper ore and provide the theory guide for copper resources prediction in China.YING Lijuan CHEN Yuchuan WANG Denghong TANG Juxing CHEN Zhenghui WANG Chenghui 2015Acta Geologica Sinica(English Edition)2015,89,1:5
13Observer design and output feedback stabilization for linear singular time-delay systems with unknown inputs显示文摘The design of a functional observer and reduced-order observer with internal delay for linear singular time-delay systems with unknown inputs is discussed. The sufficient conditions of the existence of observers, which are normal linear time-delay systems, and the corresponding design steps are presented via linear matrix inequality(LMI). Moreover, the observer-based feedback stabilizing controller is obtained. Three examples are given to show the effectiveness of the proposed methods.Peng CUI Chenghui ZHANG 2008控制理论与应用(英文版)2008,6,2:4
14Re-Os Isotopic Dating of a W-Be Polymetallic Deposit in the Southern Qinling Region, China显示文摘Objective In recent years,a series of tungsten prospecting breakthroughs have been made in the southern Qinling Mountains.Especially,a new deposit type with a scheelite-beryl-molybdenite assemblage in the Zhen’an area of Shaanxi Province was firstly discovered.This deposit is currently in a detailed investigation stage,and noDAI Hongzhang WANG Denghong WANG Chenghui HUANG Fan 2018Acta Geologica Sinica(English Edition)2018,92,1:4
15A Preliminary Review of Metallogenic Regularity of Gold Deposits in China显示文摘Gold is one of the most important mineral resources in China with its rich mineral resources. In recent years,significant progress has been made on the process of gold resource exploration. Some large and giant gold deposits were newly found and some important expansions in the main mining regions were also been completed. Studies on metallogenic regularity of gold deposits in China also have made achievements with a long–term work. This review aims to conclude the achievements of research on gold metallogenic regularity in China. Based on the data of about 2000 gold deposits and other ore(mineralized) occurrences,gold deposits in China were classified into five prediction types: gold deposits genetically related to granite–greenstone formation,gold deposits related to sedimentary formation(including the Carlin type and the metamorphosed clastic rock related vein gold deposit),gold deposits genetically related to volcanic rocks(including the continental and marine types),gold deposits genetically related to intrusions(including the porphyry type and the inner intrusion and contact zone related gold deposit),gold deposits of supergenesis(including fracture zone–altered rock gold deposit,placer gold deposit,gossan type gold deposit and soil type gold deposit). Statistics on precise chronology data of gold deposits indicate that there occurred 5 main periods of gold–mineralization in geological history of China. They were Neoarchean to Paleoproterozoic,Meso–Neoproterozoic,Paleozoic,Mesozoic,and Cenozoic. Gold deposits in China mainly formed in the Mesozoic and the Cenozoic. On the studies of the spatial–temporal distribution characteristics of gold deposits,53 gold–forming belts were delineated in China. The metallogenic regularity of gold deposits was preliminarily summarized and 71 gold metallogenic series were proposed in China. This suggests that it is necceary to deepen the study on metallogenic regularity of gold deposits and to provide the theory guide for the ore–prospecting for gold resources in China.WANG Chenghui WANG Denghong XU Jue YING Lijuan LIU Lijun LIU Shanbao 2015Acta Geologica Sinica(English Edition)2015,89,2:4
16Effects of the Composition of Electrodeposited Fe-Ni-P Alloy on the Thermostability and Magnetic Properties显示文摘The magnetic properties, structure defects of electrodeposited Fe-Ni-P alloys with various compositions and the thermostability at amorphous state have been studied by DSC, positron annihilation and electronic integrating instrument methods. The results show that the thermostability of amorphous Fe-Ni-P alloys increases with Fe content. Emergence and recrystallization of stable phases defer as the P content of the coating increases. The minimum Hc, Br and Ph occur at 9.4 P (wt pct) content. Maximum Hc, Br and Ph occur at the weight ratio of Fe to Ni equaling to 1/9.Chenghui GAO Baiyang ZHOU (Institute for Materials Research, Fuzhou University, Fuzhou 350002, China)(Manuscript received February 22, 1996, in revised form June 3, 1996) 1997Journal of Materials Science & Technology1997,13,2:4
17Initiative Optimization Operation Strategy and Multi-objective Energy Management Method for Combined Cooling Heating and Power显示文摘This paper proposed an initiative optimization operation strategy and multi-objective energy management method for combined cooling heating and power(CCHP) with storage systems.Initially,the initiative optimization operation strategy of CCHP system in the cooling season,the heating season and the transition season was formulated.The energy management of CCHP system was optimized by the multi-objective optimization model with maximum daily energy efficiency,minimum daily carbon emissions and minimum daily operation cost based on the proposed initiative optimization operation strategy.Furthermore,the pareto optimal solution set was solved by using the niche particle swarm multi-objective optimization algorithm.Ultimately,the most satisfactory energy management scheme was obtained by using the technique for order preference by similarity to ideal solution(TOPSIS) method.A case study of CCHP system used in a hospital in the north of China validated the effectiveness of this method.The results showed that the satisfactory energy management scheme of CCHP system was obtained based on this initiative optimization operation strategy and multi-objective energy management method.The CCHP system has achieved better energy efficiency,environmental protection and economic benefits.Feng Zhao Chenghui Zhang Bo Sun 2016IEEE/CAA Journal of Automatica Sinica2016,3,4:4
18High-precision U-series dating of Holocene corals from South China Sea by thermal ionization mass spectrometry(TIMS)显示文摘Using the isotopic diluting and thermal ionization mass spectrometric (TIMS) technique, the U-series dating procedure was established on the basis of measurement of national standard GBW04412. With this highly precise technique the Holocene corals from the South China Sea were dated. Comparison between this method and α-spectrometry was made. The results show that a thriving period of corals in the South China Sea appeared at 6 800—5 800 a BP, during which the paleosea level was the higher than at present in the Holecene.Zhibang Ma Ming Xia Chenghui Zhang Zicheng Pen Zhaorong Wang Weidong Sun Zhisheng An 1999Chinese Science Bulletin1999,44,10:4
19Synthesis,structure and physical properties of the one-dimensional chain complex of tetrathiafulvalene carboxylate显示文摘A new Co(Ⅱ) coordination polymer bearing TTF carboxylate group, [{Co2(trioTTF)2(H2O)6}·5H2O]n (1) (trioTTF=2-(5,6,8,9,11,12,14,15-octahydro-[1,3]dithiolo[4,5-h][1,4,13,7,10]trioxadithiacyclopentadecin-2-ylidene)-1,3-dithiole-4,5-dicarboxylate), has been prepared and characterized. In the structure of 1, shorter intermolecular S····S contacts (3.565 △) are found between the trioTTF groups from neighboring chains. The electric conductivity of 1 is poor due to the bulky crown-ether group, but it exhibits ferromagnetic interaction at low temperature.CHEN Ya LI ChengHui WANG CaiFeng WU Di ZUO JingLin YOU XiaoZeng 2009Science China Chemistry2009,52,10:4
20Platelet-mediated adhesion facilitates leukocyte sequestration in hypoxia-reoxygenated microvessels显示文摘Leukocyte transendothelial migration and sequestration are two distinct outcomes following leukocyte adhesion to endothelium during ischemia-reperfusion injury, in which platelets may play a pivotal role. In the present study, we established an in vitro hypoxia-reoxygenation model to mimic ischemia-reperfusion injury and found platelet pre-incubation significantly increased leukocyte adhesion to endothelial cells after hyoxia-reoxygenation(over 67%). Blockade of endothelial-cell-expressed adhesion molecules inhibited leukocyte direct adhesion to endothelial cells, while platelet-mediated leukocyte adhesion was suppressed by blockade of platelet-expressed adhesion molecules. Further experiments revealed platelets acted as a bridge to mediate leukocyte adhesion, and platelet-mediated adhesion was the predominant pattern in the presence of platelets. However, platelet pre-incubation significantly suppressed leukocyte transendothelial migration after hypoxia-reoxygenation(over 31%), which could be aggravated by blockade of endothelial-cell-expressed adhesion molecules, but alleviated by blockade of platelet-expressed adhesion molecules. This would indicate that platelet-mediated adhesion disrupted leukocyte transendothelial migration. An in vivo mesenteric ischemia-reperfusion model demonstrated leukocyte transfusion alone caused mild leukocyte adhesion to reperfused vessels and subsequent leukocyte infiltration, while simultaneous leukocyte and platelet transfusion led to massive leukocyte adhesion and sequestration within reperfused microvessels. Our studies revealed platelets enhanced leukocyte adhesion to endothelial cells, but suppressed leukocyte transendothelial migration. Overall, this leads to leukocyte sequestration in hypoxia-reoxygenated microvessels.Senfeng Zheng Yanting Cao Wenjian Zhang Honglin Liu Jia You Yiqing Yin Jinning Lou Chenghui Li 2016Science China(Life Sciences)2016,59,3:3
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