|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Zero-sequence Circulating Current Reduction for Three-phase Three-level Modular Photovoltaic Grid-connected Systems显示文摘针对共享正、负母线和交流母线的三相三电平模块化光伏并网系统的零序环流问题,建立三电平模块化系统零序环流的等效模型,并根据激励源的不同将零序环流分成3类,提出一种共享正、负母线和中线的并联方案来抑制I类零序环流,及一种基于改进型LCL滤波器的并联方案来抑制II、III类零序环流的高频分量,和采用零序环流控制器来抑制II、III类零序环流的低频分量。最后,通过10 kW的三相三电平模块化光伏并网系统的仿真和实验,证明了零序环流模型分析和抑制方法的正确性。 | ZHANG Xing SHAO Zhangping WANG Fusheng LIU Ping REN Kangle | 2013 | 中国电机工程学报2013，33，9： | 16 |
| 2 | Flight safety measurements of UAVs in congested airspace显示文摘Describing spatial safety status is crucial for high-density air traffic involving multiple unmanned aerial vehicles(UAVs) in a complex environment. A probabilistic approach is proposed to measure safety situation in congested airspace. The occupancy distribution of the airspace is represented with conflict probability between spatial positions and UAV. The concept of a safety envelope related to flight performance and response time is presented first instead of the conventional fixed-size protected zones around aircraft. Consequently, the conflict probability is performance-dependent, and effects of various UAVs on safety can be distinguished. The uncertainty of a UAV future position is explicitly accounted for as Brownian motion. An analytic approximate algorithm for the conflict probability is developed to decrease the computational consumption. The relationship between safety and flight performance are discussed for different response times and prediction intervals. To illustrate the applications of the approach, an experiment of three UAVs in formation flight is performed. In addition, an example of trajectory planning is simulated for one UAV flying over airspace where five UAVs exist. The validation of the approach shows its potential in guaranteeing flight safety in highly dynamic environment. | Xiang Jinwu Liu Yang Luo Zhangping | 2016 | Chinese Journal of Aeronautics2016，29，5： | 14 |
| 3 | 不同方式刺激与运动训练的成骨作用机理研究显示文摘对低频振动,牵张应力,剪切应力,超声波,光、电刺激,药物刺激的成骨作用及其生物学机制和运动促进的成骨作用研究进展进行文献梳理。结果表明,低频振动,牵张应力,剪切应力,超声波,光、电刺激,药物刺激均可刺激成骨作用的发生和发展。其生物学机制主要通过骨组织感受力学刺激——应力敏感通道和整合素-细胞骨架结构完成。机械负荷可以激活细胞膜上Ca2+通道引起胞外Ca2+内流,并可促进胞内Ca2+释放,从而促进骨的合成代谢作用。力学信号的转导过程包括力学偶联、生化偶联、信号转导和受体细胞应答等4个阶段。细胞因子和激素含量变化对胞内信号转导有重要影响,如OPG、TGF-β、IGF、甲状旁腺素(PTH)、雌激素、PGE2等。运动可促进骨生长发育,但不同运动方式及其运动强度对骨促进作用是不同的;运动对老年骨质疏松症,特别是女性绝经期后因雌激素分泌减少导致骨丢失的防治起重要作用。 | 田振军 马德媛 ZhangPing HirokiYokota | 2009 | 中国体育科技2009，45，1： | 12 |
| 4 | Factors Affecting Agrobacterium-Mediated Transformation Efficiency in Rice显示文摘Several important factors affecting the efficiency of Agrobacterium-mediated rice transformation were studied with several predominant commercial indica and japonica rice cultivars. As far as indica rice callus was concerned, CC medium was the best and the quality of callus was improved with the addition of 1.0 to 2.0 mg/L ABA. It decreased the percentage of browning calli and improved the callus growing state by addition of a certain amount of sorbitol to the subculture medium. NB medium was the best for callus initiation of japonica rice, but the improvement in the quality of callus of japonica subspecies was not obvious by adding ABA. During the period of subculture, to a certain degree, increasing the sucrose concentration could improve the proportion of hygromycin resistant calli. Furthermore, the transformation efficiency would be higher by applying selection pressure in the selection stage, removing selection pressure during the plantlet differentiation period and applying selection pressure again during seedling hardening period. Besides, suitable combination of plant hormones was beneficial for callus differentiation. An efficient Agrobacterium-mediated rice transformation system had been established for several rice cultivars and a lot of transgenic rice plants had been obtained. | CHENEn-hui ZHANGPing ZUOShi-min LIAi-hong ZHANGYa-fang CHENZong-xiang PANXue-biao | 2004 | Rice science2004，11，4： | 7 |
| 5 | Generation of mouse anti-human urate anion exchanger antibody by genetic immunization and its identification显示文摘Background Human urate anion exchanger (hURAT1) as a major urate transporter expressed on renal tubular epithelial cells regulates blood urate level by reabsorbing uric acid. Antibody is an important tool to study hURAT1. This study aimed, by genetic immunization, to produce mouse anti-hURAT1 polyclonal antibody with high throughput and high specificity and to detect the location of hURAT1 in human kidney.Methods Human renal total RNA was isolated and the entire cDNA of hURAT1 was amplified by RT-PCR. The sequence of intracellular high antigenicity fragment (A280 to R349) was chosen by prediction software of protein antigenicity, and its cDNA was amplified from cDNA of hURAT1, and then cloned into pBQAP-TT vector to construct recombinant plasmid pBQAP-TT-hURAT1-210 for genetic immunization. Mice were inoculated with this recombinant plasmid and two other adjuvant plasmids, pCMVi-GMCSF and pCMVi-Flt3L, which helped to enhance the antibody’s generation. After four weeks, the mice were sacrificed to obtain the anti-hURAT1 antibody from serum. The antibody was identified by western blot analysis and immunohistochemistry. At the same time, rabbit anti-hURAT1 antibody was produced by protein immunization. The specificity and efficiency between the rabbit and mouse anti-hURAT1 antibody were compared by western blot analysis and immunohistochemistry. Results The entire cDNA of hURAT1 and cDNA of its intracellular high immunogenic fragment were amplified successfully. Recombinant plasmid pBQAP-TT-hURAT1-210 for genetic immunization was confirmed by restriction digestion and sequencing. Both!the mouse anti-hURAT1 antibody and rabbit anti-hURAT1 antibody recognized 58kD hURAT1 and 64kD glycosylated hURAT1 protein bands in western blot. Immunohistochemically, hURAT1 was located at the brush border membrane of renal proximal tubular cells. In addition, the throughput and specificity of the mouse anti-hURAT1 antibody were higher than those of the rabbit anti-hURAT1 antibody.Conclusion Genetic immunization can generate anti-hURAT1 polyclonal antibody of high throughput and specificity. | XUGuo-shuang WUDi CHENXiang-mei SHISuo-zhu HONGQuan ZHANGPing LUYang | 2005 | Chinese Medical Journal2005，，8： | 7 |
| 6 | Mapping knowledge domains analysis of research topics of doctoral dissertations on Library Science in Europe and the United States显示文摘Europe and the United States are considered to be the leaders in the field of Library Science research.Their doctoral dissertations have an irreplaceable role for studying and tracking the development of Library Science.In this study,3 973 doctoral dissertations in the database of PQDD from year1925 to 2013 are used as the research object.Keywords co-occurrence analysis and | Guoli YANG Jing LIU Manrong WANG Zhangping LU | 2015 | Journal of Library Science in China2015，，1： | 4 |
| 7 | Belief-Propagation-Approximated Decoding of Low-Density Parity-Check Codes显示文摘In this paper, we propose a new reduced-complexity decoding algorithm of Low-Density Parity-Check (LDPC) codes, called Belief-Propagation-Approximated (BPA) algorithm, which utilizes the idea of normalization and translates approximately the intricate nonlinear operation in the check nodes of the original BP algorithm to only one operation of looking up the table. The normalization factors can be obtained by simulation, or theoretically. Simulation results demonstrate that BPA algorithm exhibits fairly satisfactory bit error performance on the Additive White Gaussian Noise (AWGN) channel. | SONGHui-shi ZHANGPing | 2004 | The Journal of China Universities of Posts and Telecommunications2004，11，1： | 4 |
| 8 | SARS-CoV-2 ORF10 suppresses the antiviral innate immune response by degrading MAVS through mitophagy显示文摘The global coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)has caused severe morbidity and mortality in humans.It is urgent to understand the function of viral genes.However,the function of open reading frame 10(ORF10),which is uniquely expressed by SARS-CoV-2,remains unclear.In this study,we showed that overexpression of ORF10 markedly suppressed the expression of type I interferon(IFN-I)genes and IFN-stimulated genes.Then,mitochondrial antiviral signaling protein(MAVS)was identified as the target via which ORF10 suppresses the IFN-I signaling pathway,and MAVS was found to be degraded through the ORF10-induced autophagy pathway.Furthermore,overexpression of ORF10 promoted the accumulation of LC3 in mitochondria and induced mitophagy.Mechanistically,ORF10 was translocated to mitochondria by interacting with the mitophagy receptor Nip3-like protein X(NIX)and induced mitophagy through its interaction with both NIX and LC3B.Moreover,knockdown of NIX expression blocked mitophagy activation,MAVS degradation,and IFN-I signaling pathway inhibition by ORF10.Consistent with our observations,in the context of SARS-CoV-2 infection,ORF10 inhibited MAVS expression and facilitated viral replication.In brief,our results reveal a novel mechanism by which SARS-CoV-2 inhibits the innate immune response;that is,ORF10 induces mitophagy-mediated MAVS degradation by binding to NIX. | Xingyu Li Peili Hou Wenqing Ma Xuefeng Wang Hongmei Wang Zhangping Yu Huasong Chang Tiecheng Wang Song Jin Xue Wang Wenqi Wang Yudong Zhao Yong Zhao Chunqing Xu Xiaomei Ma Yuwei Gao Hongbin He | 2022 | Cellular & Molecular Immunology2022，19，1： | 4 |
| 9 | Emerging Variants of B.1.617 Lineage Identified Among Returning Chinese Employees Working in India—Chongqing Municipality,China,April 2021显示文摘On April 22 and 23,2021,3 confirmed COVID-19 cases in passengers on an arriving airplane from Nepal were reported by Chongqing Public Health Medical Center.Preliminary epidemiological investigation revealed these 3 patients,males aged 20-30 years,were coworkers of a cellphone company that has a manufacturing base in Noida,India,where they worked with their Indian colleagues since late 2019. | Sheng Ye Yongjun Zhang Xiang Zhao Zhen Yu Yang Song Zhangping Tan Yun Tang Shuang Chen Mingyue Wang Hua Ling | 2021 | China CDC weekly2021，3，19： | 4 |
| 10 | 显示文摘 | LIUHong-wei ZHANGPing HUHan-xiang(刘宏伟 张萍 胡汉祥) | 2014 | 分析化学2014，42，6： | 2 |
| 11 | Microstructure evolution and interface structure of Al-40 wt% Si composites produced by high-energy ball milling显示文摘High silicon content Al-Si composites with a composition of Al-40 wt% Si were fabricated via a highenergy ball milling method. The microstructure evolution of Al-40 wt% Si milled powders and sintered composites has been thoroughly studied by scanning electron microscopy, X-ray diffraction, energydispersive spectrometry and high-resolution transmission electron microscopy. The mechanism of ball milling Al-40 wt% Si powders has been disclosed in detail: fracture mechanism dominating in the early stages, followed by the agglomeration mechanism, finally reaching the balance between the fragments and the agglomerates. It has been found that the average particle sizes of mixed Al-Si powders can be refined to the nanoscale, and the crystallite sizes of Al and Si have been reduced to 10nm and 62nm upon milling for 2h–50h, respectively. The finally formed Al-Si interfaces after ball milling for 50h are wellcohesive. A dense and homogenous Al-40 wt% Si composite have been achieved by solid-state sintering at550?C. The results thus provide an effective support for producing bulk nanostructured Al-Si composites. | Yuanyuan Chen Zhangping Hu Yifei Xu Jiangyong Wang Peter Schützendübe Yuan Huang Yongchang Liu Zumin Wang | 2019 | Journal of Materials Science & Technology2019，35，4： | 2 |
| 12 | SINGULAR PERTURBATION OF THREE-POINT BOUNDARY VALUE PROBLEM FOR THIRD ORDER DIFFERENTIAL EQUATIONS显示文摘In this paper, by the theory of differential inequalities, we study the existence and uniqueness of the solution to the three-point boundary value problem for third order differential equations. Furthermore we study the singular perturbation of three-point boundary value problem to third order quasilinear differential equations, construct the higher order asymptotic solution and get the error estimate of asymptotic solution and perturbed solution. | Xu Guoan Yu Zhangping Zhou Zheyan | 2005 | Annals of Differential Equations2005，21，3： | 2 |
| 13 | Taurine supplementation reduces oxidative stress and protects the liverin an iron-overload murine model显示文摘 | Zeyu Zhang Dan Liu Bo Yi Zhangping Liao Lei Tang Dong Yin Ming He | 2014 | Molecular Medicine Reports2014，，5： | 2 |
| 14 | A novel trajectory planning strategy for aircraft emergency landing using Gauss pseudospectral method显示文摘To improve the survivability during an emergency situation, an algorithm for aircraft forced landing trajectory planning is proposed. The method integrates damaged aircraft modelling and trajectory planning into an optimal control framework. In order to deal with the complex aircraft flight dynamics, a solving strategy based on Gauss pseudospetral method(GPM) is presented.A 3-DOF nonlinear mass-point model taking into account the wind is developed to approximate the aircraft flight dynamics after loss of thrust. The solution minimizes the forced landing duration, with respect to the constraints that translate the changed dynamics, flight envelope limitation and operational safety requirements. The GPM is used to convert the trajectory planning problem to a nonlinear programming problem(NLP), which is solved by sequential quadratic programming algorithm. Simulation results show that the proposed algorithm can generate the minimum-time forced landing trajectory in event of engine-out with high efficiency and precision. | Shaohua MENG Jinwu XIANG Zhangping LUO Yiru REN Nanjian ZHUANG | 2014 | Control Theory and Technology2014，12，4： | 2 |
| 15 | Effects of Hypobaric Storage on Physiological and Biochemical Changes in Postharvest Dong Jujube Fruit During Cold Storage显示文摘Effects of hypobaric storage on physiological and biochemical changes in Dong jujube fruit were investigated.Hypobaric storage significantly delayed the decrease in firmness and maintained content of ascorbic acid,reduced accumulation of ethanol and acetaldehyde in pulp and respiration,inhibited activities of ascorbic acid oxidase and alcohol dehydrogenase and slowed down the rate of ethylene production,but had little effect on flesh browning of the fruit. | XUEMeng-lin ZHANGPing ZHANGJi-shu WANGLi | 2003 | Agricultural Sciences in China2003，2，4： | 2 |
| 16 | 快速弧放疗交付系统的测试与质量保证[J]显示文摘 | LingCC ZhangP ArchambauhY BocanekJ TangG LosassoT | | 国际放射肿瘤生物物理学杂志0，，： | 2 |
| 17 | IS THE ELECTRONIC DICTIONARY YOUR FAITHFUL FRIEND?显示文摘With the development of electronics,dictionaries are changing their traditional images. The handy electronic dictionary is so convenient that it is popular among different kinds of dictionary users who rely on it more than on paper dictionaries. This paper intends to show evidence of the detrimental effects electronic dictionaries have left and suggest it is more advisable for students to trust a carefully-chosen paper dictionary for their vocabulary learning instead. Furthermore, the findings pose teachers with a serious issue to reconsider our teaching methods and to improve the way vocabulary is tested. | ZhangPing | 2004 | 中国英语教学:英文版2004，27，2： | 2 |
| 18 | Implementing the Whole Language Approach in 'Selected Readings of English and American Literature' Course显示文摘This article explores the ways and activities designed on the Whole Language Approach to foster learners' integrated language skills and their ability to understand and appreciate great English literary works. Based on the major principles of Whole Language instruction, the course syllabus requires that learners read and write on massive amount of English | ZhangPing | 2004 | 中国英语教学:英文版2004，27，3： | 2 |
| 19 | The analysis of genetic diversity and differentiation of six Chinese cattle populations using microsatellite markers显示文摘A total of 321 individuals from six cattle populations of four species in a bovine subfamily in China were studied using 12 pairs of mi- crosatellite markers. The genetic diversities within and between populations were calculated. The phylogenetic trees were constructed by (δμ) 2 and DA distances, and the divergence times between populations were estimated by (δμ) 2. Altogether, 144 microsatellite alleles were detected including 24 private alleles and nine shared alleles. Chinese Holstein had the largest number of private alleles (10), whereas, Bohai black and Buffalo had the smallest number of private alleles (2). Chinese Holstein showed the highest genetic variability. Its ob- served number of alleles (Na), mean effective number of alleles (MNA), and mean heterozygosity (He) were 7.7500, 4.9722, and 0.7719, respectively, whereas, the Buffalo and Yak showed low genetic variability. In the phylogenetic trees, Luxi and Holstein grouped first, followed by Bohai and Minnan. Yak branched next and buffalo emerged as the most divergent population from other cattle populations. Luxi and Bohai were estimated to have diverged 0.039-0.105 million years ago (MYA), however, buffalo and Holstein diverged 0.501-1.337 MYA. The divergence time of Yak versus Minnan, Holstein and buffalo was 0.136-0.363, 0.273-0.729, and 0.326-0.600 MYA, respectively. | Yongjiang Mao Hong Chang Zhangping Yang Liu Zhang Ming Xu Guobin Chang Wei Sun Guangming Song Dejun Ji | 2008 | Journal of Genetics and Genomics2008，35，1： | 2 |
| 20 | Joint Transmit Beamforming and Power Control for CDMA System显示文摘Downlink transmit beamforming is a promising technique to reduce interference, and power control is a technique to adjust transmission power to satisfy the link quality. Joint transmission power control and beamforming are proposed to minimize total transmission power. The joint optimization problem is solved by receiver beamforming and power control in virtual uplink. SIR based power control is performed to adjust the power allocation, and transmit beamforming weight vectors are determined by Minimum Variance Distortionless Response (MVDR) criterion. The multipath combining weight vectors are determined by maximum ratio combining criterion. Simulation results show the joint optimization scheme decreases the transmission power, and system performance is enhanced. | LIJi-long CHENYu LIChun-yua ZHANGPing | 2005 | The Journal of China Universities of Posts and Telecommunications2005，12，1： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员