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| 1 | A seven-gene-deleted African swine fever virus is safe and effective as a live attenuated vaccine in pigs显示文摘African swine fever(ASF)is a devastating infectious disease in swine that is severely threatening the global pig industry.An efficacious vaccine is urgently required.Here,we used the Chinese ASFV HLJ/18 as a backbone and generated a series of genedeleted viruses.The virulence,immunogenicity,safety,and protective efficacy evaluation in specific-pathogen-free pigs,commercial pigs,and pregnant sows indicated that one virus,namely HLJ/18-7GD,which has seven genes deleted,is fully attenuated in pigs,cannot convert to the virulent strain,and provides complete protection of pigs against lethal ASFV challenge.Our study shows that HLJ/-18-7GD is a safe and effective vaccine against ASFV,and as such is expected to play an important role in controlling the spread of ASFV. | Weiye Chen Dongming Zhao Xijun He Renqiang Liu Zilong Wang Xianfeng Zhang Fang Li Dan Shan Hefeng Chen Jiwen Zhang Lulu Wang Zhiyuan Wen Xijun Wang Yuntao Guan Jinxiong Liu Zhigao Bu | 2020 | Science China(Life Sciences)2020，63，5： | 72 |
| 2 | Emergence and prevalence of naturally occurring lower virulent African swine fever viruses in domestic pigs in China in 2020显示文摘African swine fever virus(ASFV)has been circulating in China for more than two years,and it is not clear whether the biological properties of the virus have changed.Here,we report on our surveillance of ASFVs in seven provinces of China,from June to December,2020.A total of 22 viruses were isolated and characterized as genotype II ASFVs,with mutations,deletions,insertions,or short-fragment replacement occurring in all isolates compared with Pig/HLJ/2018(HLJ/18),the earliest isolate in China.Eleven isolates had four different types of natural mutations or deletion in the EP402R gene and displayed a nonhemadsorbing(non-HAD)phenotype.Four isolates were tested for virulence in pigs;two were found to be as highly lethal as HLJ/18.However,two non-HAD isolates showed lower virulence but were highly transmissible;infection with 106 TCID50 dose was partially lethal and caused acute or sub-acute disease,whereas 103 TCID50 dose caused non-lethal,sub-acute or chronic disease,and persistent infection.The emergence of lower virulent natural mutants brings greater difficulty to the early diagnosis of ASF and creates new challenges for ASFV control. | Encheng Sun Zhenjiang Zhang Zilong Wang Xijun He Xianfeng Zhang Lulu Wang Wenqing Wang Lianyu Huang Fei Xi Haoyue Huangfu Ghebremedhin Tsegay Hong Huo Jianhong Sun Zhijun Tian Wei Xia Xuewu Yu Fang Li Renqiang Liu Yuntao Guan Dongming Zhao Zhigao Bu | 2021 | Science China(Life Sciences)2021，64，5： | 46 |
| 3 | 南京葫芦洞石笋δ^(13)C对冰期气候的复杂响应与诊断显示文摘文中重建了南京葫芦洞内距今75~10ka期间7支石笋δ13C的时间变化序列,δ13C曲线在重叠时段均具有一致性波动形式.在最后一个冰期/间冰期旋回,δ13C值变化幅度达6‰,反映了C3/C4植被类型变化对δ13C的主控作用.然而,在末次冰期格陵兰冰心记录的DO暖事件时(千年尺度),δ13C与指示降水变化的δ18O呈反相关,主要反映了快速渗水条件下洞穴岩溶水对土壤CO2溶解量的降低.据同期生长石笋δ13C和δ18O对比分析,石笋碳同位素动力分馏程度与生长速率有关.进一步研究发现,本区末次冰消期植被类型变化滞后于降水变化约700年. | 孔兴功 汪永进 吴江滢 Cheng Hai L R Edwards Wang Xianfeng | 2005 | 中国科学(D辑)2005，35，11： | 24 |
| 4 | Source Separation of Diesel Engine Vibration Based on the Empirical Mode Decomposition and Independent Component Analysis显示文摘Vibration signals from diesel engine contain many different components mainly caused by combustion and mechanism operations,several blind source separation techniques are available for decomposing the signal into its components in the case of multichannel measurements,such as independent component analysis(ICA).However,the source separation of vibration signal from single-channel is impossible.In order to study the source separation from single-channel signal for the purpose of source extraction,the combination method of empirical mode decomposition(EMD) and ICA is proposed in diesel engine signal processing.The performance of the described methods of EMD-wavelet and EMD-ICA in vibration signal application is compared,and the results show that EMD-ICA method outperforms the other,and overcomes the drawback of ICA in the case of single-channel measurement.The independent source signal components can be separated and identified effectively from one-channel measurement by EMD-ICA.Hence,EMD-ICA improves the extraction and identification abilities of source signals from diesel engine vibration measurements. | DU Xianfeng LI Zhijun BI Fengrong ZHANG Junhong WANG Xia SHAO Kang | 2012 | Chinese Journal of Mechanical Engineering2012，25，3： | 21 |
| 5 | Multi-scale HPC system for multi-scale discrete simulation—Development and application of a supercomputer with 1 Petaflops peak performance in single precision显示文摘A supercomputer with 1.0 Petaflops peak performance in single precision,designed and established by Institute of Process Engineering,Chinese Academy of Sciences,is introduced in this brief communication.A designing philosophy utilizing the similarity between hardware,software and the problems to be solved is embodied,based on the multi-scale method and discrete simulation approaches developed at Institute of Process Engineering(IPE)and implemented in a graphic processing unit(GPU)-based hybrid computing mode.The preliminary applications of this machine in areas of multi-phase flow,molecular dynamics and so on are reported,demonstrating the supercomputer as a paradigm of green computation in new architecture. | Feiguo Chen Wei Ge Li Guo Xianfeng He Bo Li Jinghai Li Xipeng Li Xiaowei Wang Xiaolong Yuan | 2009 | Particuology2009，7，4： | 19 |
| 6 | Quasi-real-time simulation of rotating drum using discrete element method with parallel GPU computing显示文摘Real-time simulation of industrial equipment is a huge challenge nowadays. The high performance and fine-grained parallel computing provided by graphics processing units (GPUs) bring us closer to our goals. In this article, an industrial-scale rotating drum is simulated using simplified discrete element method (DEM) without consideration of the tangential components of contact force and particle rotation. A single GPU is used first to simulate a small model system with about 8000 particles in realtime, and the simulation is then scaled up to industrial scale using more than 200 GPUs in a 1D domain-decomposition parallelization mode. The overall speed is about 1/11 of the real-time. Optimization of the communication part of the parallel GPU codes can speed up the simulation further, indicating that such real-time simulations have not only methodological but also industrial implications in the near future. | Ji Xu Huabiao Oi Xiaojian Fang Liqiang Lu Wei Ge Xiaowei Wang Ming xu Feiguo Chen xianfeng He Jinghai Li | 2011 | Particuology2011，9，4： | 16 |
| 7 | Detecting soil salinity with arid fraction integrated index and salinity index in feature space using Landsat TM imagery显示文摘Modeling soil salinity in an arid salt-affected ecosystem is a difficult task when using remote sensing data because of the complicated soil context(vegetation cover,moisture,surface roughness,and organic matter)and the weak spectral features of salinized soil.Therefore,an index such as the salinity index(SI)that only uses soil spectra may not detect soil salinity effectively and quantitatively.The use of vegetation reflectance as an indirect indicator can avoid limitations associated with the direct use of soil reflectance.The normalized difference vegetation index(NDVI),as the most common vegetation index,was found to be responsive to salinity but may not be available for retrieving sparse vegetation due to its sensitivity to background soil in arid areas.Therefore,the arid fraction integrated index(AFII)was created as supported by the spectral mixture analysis(SMA),which is more appropriate for analyzing variations in vegetation cover(particularly halophytes)than NDVI in the study area.Using soil and vegetation separately for detecting salinity perhaps is not feasible.Then,we developed a new and operational model,the soil salinity detecting model(SDM)that combines AFII and SI to quantitatively estimate the salt content in the surface soil.SDMs,including SDM1 and SDM2,were constructed through analyzing the spatial characteristics of soils with different salinization degree by integrating AFII and SI using a scatterplot.The SDMs were then compared to the combined spectral response index(COSRI)from field measurements with respect to the soil salt content.The results indicate that the SDM values are highly correlated with soil salinity,in contrast to the performance of COSRI.Strong exponential relationships were observed between soil salinity and SDMs(R2>0.86,RMSE<6.86)compared to COSRI(R2=0.71,RMSE=16.21).These results suggest that the feature space related to biophysical properties combined with AFII and SI can effectively provide information on soil salinity. | Fei WANG Xi CHEN GePing LUO JianLi DING XianFeng CHEN | 2013 | Journal of Arid Land2013，5，3： | 14 |
| 8 | Bioptical microcycles of laminated speleothems from China and their chronological significance显示文摘Interfaces of microlayers, in most stalagmites from China, consist of opaque and organic materials. Observed with microscope, the interfaces seem dark under transmitted light and luminiferous under reflected fluorescent light. Stalagmites in which the two optical characters are unified spatially would be most suitable for cross-dating use, and can play an important role in the study on speleochronology and speleoclimatology. | Ming Tan Xiaoguang Qin Linmei Shen Xianfeng Wang Yongjin Wang Tieying Li Linhua Song Laihong Wang Dongsheng Liu | 1999 | Chinese Science Bulletin1999，44，17： | 14 |
| 9 | Characterization and fine mapping of the rice blast resistance gene Pia显示文摘Blast,caused by Magnaporthe oryzae,is one of the most widespread and destructive diseases of rice.Breeding durable resistant cultivars(cvs) can be achieved by pyramiding of various resistance(R) genes.Pia,carried by cv.Aichi Asahi,was evaluated against 612 isolates of M.oryzae collected from 10 Chinese provinces.The Pia gene expresses weak resistance in all the provinces except for Jiangsu.Genomic position-ready marker-based linkage analysis was carried out in a mapping population consisting of 800 F2 plants derived from a cross of Aichi Asahi×Kasalath.The locus was defined in an interval of approximately 90 kb,flanked by markers A16 and A21.Four candidate genes(Pia-1,Pia-2,Pia-3,and Pia-4) ,all having the R gene conserved structure,were predicted in the interval using the cv.Nipponbare genomic sequence.Four candidate resistance gene(CRG) markers(A17,A25,A26,and A27) ,derived from the four candidates,were subjected to genotyping with the recombinants detected at the flanking markers.The first three markers completely co-segregated with the Pia locus,and the fourth was absent in the Aichi Asahi genome and disordered with the Pia locus and its flanking markers,indicating that the fourth candidate gene,Pia-4,could be excluded.Co-segregation marker-based genotyping of the three sets of differentials with known R gene genotypes revealed that the genotype of A26(Pia-3) perfectly matched the R gene genotype of Pia,indicating that Pia-3 is the strongest candidate gene for Pia. | ZENG XiaoShan YANG XianFeng ZHAO ZhengHong LIN Fei WANG Ling PAN QingHua | 2011 | Science China(Life Sciences)2011，54，4： | 13 |
| 10 | Review of Hydrogen Embrittlement in Metals: Hydrogen Diffusion, Hydrogen Characterization, Hydrogen Embrittlement Mechanism and Prevention显示文摘Hydrogen dissolved in metals as a result of internal and external hydrogen can affect the mechanical properties of the metals, principally through the interactions between hydrogen and material defects. Multiple phenomena such as hydrogen dissolution, hydrogen diffusion, hydrogen redistribution and hydrogen interactions with vacancies, dislocations, grain boundaries and other phase interfaces are involved in this process. Consequently, several hydrogen embrittlement(HE) mechanisms have been successively proposed to explain the HE phenomena, with the hydrogen-enhanced decohesion mechanism, hydrogenenhanced localized plasticity mechanism and hydrogen-enhanced strain-induced vacancies being some of the most important. Additionally, to reduce the risk of HE for engineering structural materials in service, surface treatments and microstructural optimization of the alloys have been suggested. In this review, we report on the progress of the studies on HE in metals, with a particular focus on steels. It focuses on four aspects:(1) hydrogen diffusion behavior;(2) hydrogen characterization methods;(3) HE mechanisms;and(4) the prevention of HE. The strengths and weaknesses of the current HE mechanisms and HE prevention methods are discussed, and specific research directions for further investigation of fundamental HE mechanisms and methods for preventing HE failure are identified. | Xinfeng Li Xianfeng Ma Jin Zhang Eiji Akiyama Yanfei Wang Xiaolong Song | 2020 | Acta Metallurgica Sinica(English Letters)2020，33，6： | 13 |
| 11 | The WRKY transcription factor PlWRKY65 enhances the resistance of Paeonia lactiflora(herbaceous peony)to Alternaria tenuissima显示文摘In this study,the disease resistance gene PlWRKY65 was isolated from the leaves of Paeonia lactiflora and analyzed by bioinformatics methods,and the localization of the encoded protein was explored.Quantitative real-time PCR(qRTPCR)was also used to explore the response of this gene to Alternaria tenuissima.The results showed that the gene sequence contained multiple cis-acting elements involved in the response to hormone signaling molecules belonging to the IIe subgroup of the WRKY family,and the encoded proteins were located in the nucleus.The PlWRKY65 gene has a positive regulatory effect on A.tenuissima infection.After silencing the PlWRKY65 gene via virus-induced gene silencing(VIGS),it was found that the gene-silenced plants were more sensitive to A.tenuissima infection than the wild plants,exhibiting more severe infection symptoms and different degrees of changes in the expression of the pathogenesis-related(PR)genes.In addition,we showed that the endogenous jasmonic acid(JA)content of P.lactiflora was increased in response to A.tenuissima infection,whereas the salicylic acid(SA)content decreased.After PlWRKY65 gene silencing,the levels of the two hormones changed accordingly,indicating that PlWRKY65,acting as a disease resistance-related transcriptional activator,exerts a regulatory effect on JA and SA signals.This study lays the foundation for functional research on WRKY genes in P.lactiflora and for the discovery of candidate disease resistance genes. | Xue Wang Junjie Li Jing Guo Qian Qiao Xianfeng Guo Yan Ma | 2020 | Horticulture Research2020，7，1： | 10 |
| 12 | Development of Hydro-Informatic Modelling System and its application显示文摘The understanding of hydrological cycle is the core of hydrology and the scientific base of water resources management. Meanwhile, simulation of hydrological cycle has long been regarded as an important tool for the assessment, utilization and protection of water resources. In this paper, a new tool named Hydro-Informatic Modelling System (HIMS) has been developed and introduced with case studies in the Yellow River Basin in China and 331 catchments in Australia. The case studies showed that HIMS can be employed as an integrated platform for hydrological simulation in different regions. HIMS is a modular based framework of hydrological model designed for different utilization such as flood forecasting, water resources planning and evaluating hydrological impacts of climate change and human activities. The unique of HIMS is its flexibility in providing alternative modules in the simulation of hydrological cycle, which successfully overcome the difficulties in the availability of input data, the uncertainty of parameters, and the difference of rainfall-runoff processes. The modular based structure of HIMS makes it possible for developing new hydrological models by the users. | LIU ChangMing WANG ZhongGen ZHENG HongXing ZHANG Lu WU XianFeng | 2008 | Science China(Technological Sciences)2008，51，4： | 9 |
| 13 | Simple synthesis of a porous Sb/Sb2O3 nanocomposite for a high-capacity anode material in Na-ion batteries显示文摘高能力的阳极材料为钠离子电池是高度合乎需要的。这里,多孔的 Sb/Sb 2 O 3 nanocomposite 被 Sb nanocrystals 的温和氧化成功地在空中综合。在里面合成, Sb 贡献好电导率和 Sb 2 O 3 改进骑车的稳定性,特别地在 0.02-1.5 V 的电压窗户以内。它在 540 mAh 的一个可逆能力留下 ??? ′ | Jun Pan Nana Wang Yanli Zhou Xianfeng Yang Wenyao Zhou Yitai Qian Jian Yang | 2017 | Nano Research2017，10，5： | 9 |
| 14 | Analysis of genetic architecture and favorable allele usage of agronomic traits in a large collection of Chinese rice accessions显示文摘Genotyping and phenotyping large natural populations provide opportunities for population genomic analysis and genome-wide association studies(GWAS). Several rice populations have been re-sequenced in the past decade;however, many major Chinese rice cultivars were not included in these studies. Here, we report large-scale genomic and phenotypic datasets for a collection mainly comprised of 1,275 rice accessions of widely planted cultivars and parental hybrid rice lines from China. The population was divided into three indica/Xian and three japonica/Geng phylogenetic subgroups that correlate strongly with their geographic or breeding origins. We acquired a total of 146 phenotypic datasets for 29 agronomic traits under multi-environments for different subpopulations. With GWAS, we identified a total of 143 significant association loci, including three newly identified candidate genes or alleles that control heading date or amylose content. Our genotypic analysis of agronomically important genes in the population revealed that many favorable alleles are underused in elite accessions, suggesting they may be used to provide improvements in future breeding efforts. Our study provides useful resources for rice genetics research and breeding. | Xiuxiu Li Zhuo Chen Guomin Zhang Hongwei Lu Peng Qin Ming Qi Ying Yu Bingke Jiao Xianfeng Zhao Qiang Gao Hao Wang Yunyu Wu Juntao Ma Liyan Zhang Yongli Wang Lingwei Deng Shanguo Yao Zhukuang Cheng Diqiu Yu Lihuang Zhu Yongbiao Xue Chengcai Chu Aihong Li Shigui Li Chengzhi Liang | 2020 | Science China(Life Sciences)2020，63，11： | 8 |
| 15 | Flame propagation characteristics and flame structures of zirconium particle cloud in a small-scale chamber显示文摘Flame propagating through zirconium particle cloud in a small-scale vertical rectangle chamber was investigated experimentally.In the experiments,the zirconium quoted 99% purity was used and the diameter of particles was distributed 1-22 μm.The zirconium dust was dispersed into the chamber by air flow and ignited by an electrode spark.A high-speed video camera was used to record the images of the propagating flame.Micro-thermocouples,schlieren optical system and microscopic lens were used to obtain temperature profiles and flame structure,respectively.Based on the experimental results,flame propagation characteristics and flame structure of zirconium particle cloud were analyzed.The propagation velocity of the flame is quite slow in the initial 14 ms and then accelerates to maximum value.Subsequently,the propagation velocity of the flame almost keeps constant.The combustion zone width of zirconium particle cloud is 5-6 mm.Smaller particles burn mainly at the leading edge of combustion zone in the width of 1.4 mm followed by larger particles burning 1.4-6 mm behind the leading edge of the combustion zone.Gas phase flame is not seen in zirconium particle cloud and the combustion time of single zirconium particle is 1-5 ms,which depends on its original size.The preheated zone is 7-8 mm thickness ahead of the combustion zone and intensive chemical reaction takes place at 490 K.The maximum flame temperature increases at lower concentrations,reaches the maximum value,and then decreases slightly at higher concentrations. | DING YiBin SUN JinHua HE XueChao WANG QiuHong YIN Yi XU Yao Chen XianFeng | 2010 | Chinese Science Bulletin2010，55，34： | 8 |
| 16 | Trend and Development of Semi-Solid Metal Processing显示文摘This paper reviewed the trend and development of semi-solid metal technique. The processes and mechanisms for producing slurry of SSM and its industrial applications have been summarized and discussed. Discussions on the basic rheological theory are presented for more applications. Further consideration of the development and application of SSM technique is also proposed. | Xianfeng PAN, Haifeng ZHANG, Aimin WANG, Bingzhe DING, Keqiang QIU and Zhuangqi HU (State Key Laboratory of Rapidly Solidified Nonequilibrium Alloys, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China) | 2000 | Journal of Materials Science & Technology2000，16，5： | 7 |
| 17 | Efficient parallel implementation of the lattice Boltzmann method on large clusters of graphic processing units显示文摘Many-core processors, such as graphic processing units (GPUs), are promising platforms for intrinsic parallel algorithms such as the lattice Boltzmann method (LBM). Although tremendous speedup has been obtained on a single GPU compared with mainstream CPUs, the performance of the LBM for multiple GPUs has not been studied extensively and systematically. In this article, we carry out LBM simulation on a GPU cluster with many nodes, each having multiple Fermi GPUs. Asynchronous execution with CUDA stream functions, OpenMP and non-blocking MPI communication are incorporated to improve efficiency. The algorithm is tested for two-dimensional Couette flow and the results are in good agreement with the analytical solution. For both the oneand two-dimensional decomposition of space, the algorithm performs well as most of the communication time is hidden. Direct numerical simulation of a two-dimensional gas-solid suspension containing more than one million solid particles and one billion gas lattice cells demonstrates the potential of this algorithm in large-scale engineering applications. The algorithm can be directly extended to the three-dimensional decomposition of space and other modeling methods including explicit grid-based methods. | XIONG QinGang LI Bo XU Ji FANG XiaoJian WANG XiaoWei WANG LiMin HE XianFeng GE Wei | 2012 | Chinese Science Bulletin2012，57，7： | 6 |
| 18 | Novel constant-cladding tapered-core ytterbium-doped fiber for high-power fiber laser oscillator显示文摘Power scaling based on traditional ytterbium-doped fibers(YDFs)is limited by optical nonlinear effects and transverse mode instability(TMI)in high-power fiber lasers.Here,we propose a novel long tapered fiber with a constant cladding and tapered core(CCTC)along its axis direction.The tapered-core region of the fiber is designed to enhance the stimulated Raman scattering(SRS)threshold and suppress higher-order mode resonance in the laser cavity.The CCTC YDF was fabricated successfully with a modified chemical vapor deposition(MCVD)method combined with solution doping technology,which has a cladding diameter of 400µm and a varying core with a diameter of~24μm at both ends and~31μm in the middle.To test the performance of the CCTC fiber during high-power operation,an all-fiber laser oscillator based on a CCTC YDF was investigated experimentally.As a result,a maximum output power of 3.42 kW was achieved with an optical-to-optical efficiency of 55.2%,although the TMI effect was observed at an output power of~3.12 kW.The measured beam quality(M^(2)factor)was~1.7,and no sign of the Raman component was observed in the spectrum.We believe that CCTC YDF has great potential to simultaneously mitigate the SRS and TMI effects,and further power scaling is promising by optimizing the structure of the YDF. | Yun Ye Xianfeng Lin Xiaoming Xi Chen Shi Baolai Yang Hanwei Zhang Xiaolin Wang Jinyan Li Xiaojun Xu | 2021 | High Power Laser Science and Engineering2021，9，2： | 5 |
| 19 | Abnormal Shape Mould Winding显示文摘合成材料补丁弯屈的一个理论被建议与一个协调数据模型一起决定弯屈的轨道。二个不同条件在这研究被考虑。一个人是凹面表面上的桥状况,其它是在补丁弯屈的过程滑动线状况。这份报纸由使用微分几何学理论和空格几何学理论论述判断原则和相应解决方案。验证弯屈方法的补丁的可行性,弯屈的控制代码被规划。而且,一个飞机入口的弯屈的实验和翼被执行。从实验,它证明弯屈理论的补丁有灵活性,容易的设计和申请的优点。 | Fu Hongya Wang Xianfeng Han Zhenyu Fu Yunzhong | 2007 | Chinese Journal of Aeronautics2007，20，6： | 5 |
| 20 | Trade-offs and Synergies of Ecosystem Services in the Taihu Lake Ba- sin of China显示文摘Understanding the spatial interactions among multiple ecosystem services is crucial for ecosystem services management. Ecosystem services, including crop production, freshwater supply, aquatic production, net primary production, soil conservation, water conservation, flood regulation, forest recreation, were measured at 1-km grid scale covering the Taihu Lake Basin(TLB) of China. Our objective is to get a comprehensive understanding of the spatial distributions, trade-offs, synergies of multiple ecosystem services across the TLB. Our results found that: 1) majority of ecosystem services were clustered in space and had a similar spatial distribution pattern with the geographical resource endowment. Most of the landscape contributed a high supply of no services, one or two, and a low supply of three to seven services. 2) There were high correlation between forest recreation and freshwater supply and regulating services. Aquatic production had low correlation with other services. 3) The changes of provisioning services led to trade-offs between regulating services and cultural services in the TLB, while synergies mainly occurred among the provisioning service. 4) The spatial relationships of multiple services are consistent at 1-km spatial scale, counties and provinces. This research could help integrate multiple ecosystem services across scales and serve as a reference for decision making. | QIAO Xuning GU Yangyang ZOU Changxin WANG Lei LUO Juhua HUANG Xianfeng | 2018 | Chinese Geographical Science2018，28，1： | 5 |
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