维普中文期刊产品整合服务
17篇 您的检索式:作者名="LI Yingshan"
    题名 作者 年代 出处 被引量
1Orthogonal arrays obtained by generalized difference matrices with g levels显示文摘Nowadays orthogonal arrays play important roles in statistics, computer science, coding theory and cryptography. The usual difference matrices are essential for the construction for many mixed orthogonal arrays. But there are also orthogonal arrays which cannot be obtained by the usual difference matrices, such as mixed orthogonal arrays of run size 60. In order to construct these mixed orthogonal arrays, a class of special so-called generalized difference matrices were discovered by Zhang (1989,1990,1993,2006) from the orthogonal decompositions of projection matrices. In this article, an interesting equivalent relationship between orthogonal arrays and the generalized difference matrices is presented and proved. As an application, a lot of new orthogonal arrays of run size 60 have been constructed.ZHANG YingShan LI WeiGuo MAO ShiSong ZHENG ZhongGuo 2011Science China Mathematics2011,54,1:11
2A SIMPLE METHOD FOR CONSTRUCTING ORTHOGONAL ARRAYS BY THE KRONECKER SUM显示文摘在这篇文章,我们建议一条新一般途径到构造不均匀的直角的数组,也就是 Kronecker 和。自从很多 newmixed 水平,直角的数组能被这个方法获得,有趣。Yingshan ZHANG Weiguo LI Shisong MAO Zhongguo ZHENG 2006Journal of Systems Science & Complexity2006,19,2:8
3Complementation of Wild-Type and Drug-Resistant Hepatitis B Virus Genomes to Maintain Viral Replication and Rescue Virion Production under Nucleos(t)ide Analogs显示文摘As the open reading frames of hepatitis B virus(HBV)genomes are overlapping,resistance mutations(MTs)in HBV polymerase may result in stop codon MTs in hepatitis B surface proteins,which are usually detected as a mixed population with wild-type(WT)HBV.The question was raised how the coexistence of nucleos(t)ide analogs(NAs)resistance MTs and WT sequences affects HBV replication.In the present study,HBV genomes with frequently detected reverse transcriptase(RT)/surface truncation MTs,rtA181T/sW172^*,rtV191I/sW182^*and rtM204I/sW196^*,were phenotypically characterized alone or together with their WT counterparts in different ratios by transient transfection in the absence or presence of Nas.In the absence of Nas,RT/surface truncation MTs impaired the expression and secretion of HBV surface proteins,and had a dose-dependent negative effect on WT HBV virion secretion.However,in the presence of Nas,coexistence of MTs with WT maintained viral replication,and the presence of WT was able to rescue the production of MT HBV virions.Our findings reveal that complementation of WT and MT HBV genomes is highly effective under drug treatment.Chunchen Wu Baolin Li Xiaoyong Zhang Kaitao Zhao Yingshan Chen Yifei Yuan Yan Liu Rongjuan Chen Dongping Xu Xinwen Chen Mengji Lu 2019Virologica Sinica2019,34,4:4
4A density-dependent matrix model and its applications in optimizing harvest schemes显示文摘Based on temporal data collected from 36 re-measured plots, transition probabilities of trees from a diameter class to a higher class were analyzed for the broadleaved-Korean pine forest in the Changbai Mountains. It was found that the transition probabilities were related not only to diameter size but also to the total basal area of trees with the diameter class. This paper demonstrates the development of a density-dependent matrix model, DM2, and a series of simulations with it for forest stands with different conditions under different harvest schemes. After validations with independent field data, this model proved a suitable tool for optimization analysis of harvest schemes on computers. The optimum harvest scheme(s) can be determined by referring to stand growth, total timbers harvested, and size diversity changes over time. Three user-friendly interfaces were built with a forest management decision support system FORESTAR(R) for easy operations of DM2 by forest managers. This paper also summarizes the advantages and disadvantages of DM2.Guofan Shao, WANG Fei, DAI Limin, BAI Jianwei & LI Yingshan Department of Forestry and Natural Resources, Purdue University, West Lafayette, IN 47907, USA Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China Inner Mongolia Agriculture University, Hohhot 010019, China Academy of Forest Inventory and Planning, State Forestry Administration, Beijing 100714, China 2006Science China(Technological Sciences)2006,49,z1:4
5A sensor deployment approach using glowworm swarm optimiza- tion algorithm in wireless sensor networks 显示文摘Liao Wenhua Kao Yucheng Li Yingshan 2011Expert Systems with Applications2011,38,12:1
6A new SLM method with feedback searching for OFDM system 显示文摘LI Yingshan DUAN Yanhui WANG Meng 2014Journal of Chongqing University of Posts and Telecom- munications :Natural Science Edition2014,26,1:1
7A sensor deploy- ment approach using glowworm swarm optimization algorithm in wireless sensor networks显示文摘LIAO W H KAO Yucheng LI Yingshan 2011Expert Systems with Applica- tions2011,38,12:1
8Effects of Frequency Instability Caused by Phase Noise on the Performance of the Fast FH Communication System 显示文摘Heung-Gyoon Ryu Yingshan Li Jin-Soo Park 2004IEEE Transactions on Vehicular Technology (S0018-9545)2004,53,5:1
9Grafting Propagation Techniques of Red Sandalwood(Pterocarpus santalinus),a Precious Hongmu Tree Species显示文摘[Objectives] This article aimed to study the grafting propagation techniques of red sandalwood ( Pterocarpus santalinus ), so as to provide technical support for the effective propagation of seedlings of this precious Hongmu species.[Methods] Based on the analysis and comparison of the growth performance of the Hongmu tree species introduced to China, taking 1 to 2-year-old Pterocarpus indicus seedlings as rootstocks and single-bud stems of P. santalinus as scions, grafting was carried out from January to April using three grafting propagation methods, cut grafting propagation, skin grafting propagation and oblique grafting propagation.[Results] The results of several years of experiments show that in early spring, P. santalinus could be propagated well using the grafting propagation methods of skin grafting propagation and oblique grafting propagation, with survival rate over 80%. For rootstocks with young age or thin stems, the joint unions of the oblique grafting propagation healed well, without apparent protrusions, unlike those of skin grafting propagation. The survival rate of oblique grafting propagation that is fast and reliable was higher than that of cut grafting propagation.[Conclusions] It is feasible to use the grafting propagation methods to propagate P. santalinus seedlings. This is a traditional and innovative technology path in the propagation of high-quality seedlings of precious Hongmu trees, and can be promoted and applied in industrial practice.Xiaonan HUANG Yanming LI Yiqing LI Tingting LIU Siting CHEN Chengxiang XU Yingshan QIU Yesheng LIANG 2019Asian Agricultural Research2019,11,7:1
10A sensor deployment approach using glowworm swarm optimiza- tion algorithm in wireless sensor networks 显示文摘Liao Wenhwa Kao Yucheng Li Yingshan 2011Expert Systems with Applications2011,38,12:1
11An Improved ICI Reduction Method in OFDM Communication System显示文摘Heung-Gyoon Ryu Yingshan Li Jin-Soo Park 2005IEEE Transactions on broadcasting2005,51,3:1
12An improved ICI reduction method in OFDM communication system显示文摘RYU H G LI Yingshan PARK J S 2005IEEE Transactions on Broadcasting2005,51,3:1
13A sensor de- ployment approach using glowworm swarm optimization algo- rithm in wireless sensor networks 显示文摘LIAO Wenhua KAO Yucheng LI Yingshan Expert Systems with Applications0,38,12:1
14Immunization of mice with vaccinia virus Tiantan strain yields antibodies cross-reactive with protective antigens of monkeypox virus显示文摘Dear Editor,Since the global eradication of smallpox in the 1980s,monkeypox has become the most severe infectious disease caused by pathogenic orthopoxvirus(OPXV)infection.Monkeypox virus(MPXV)is the causative pathogen of monkeypox and was classified as a category of human infectious pathogen by theMinistry of Health of the People's Republic ofChina in 2006.Monkeypox has traditionally been endemic in West and Central Africa since it was discovered nearly 70 years ago(Breman et al.,1980).However,beginning in early May 2022,a sudden outbreak of monkeypox has taken place and remains ongoing in more than 100 nonendemic countries and territories located at Europe,Americas,and Asia(http://gffzze7614427ec544b09skooq5knc9f9565xu.ffgz.tsg.suse.edu.cn/mpx_global/).Lei Yang Yingshan Chen Sha Li Yuan Zhou Yongli Zhang Rongjuan Pei Xinwen Chen Yun Wang 2023Virologica Sinica2023,38,1:0
15Obesity-induced inflammatory miR-133a mediates apoptosis of granulosa cells and causes abnormal folliculogenesis显示文摘Obesity has been reported to promote disordered folliculogenesis,but the exact molecular mechanisms are still not fully understood.In this study,we find that miR-133a is involved in obesity-induced follicular development disorder.After feeding with a high-fat diet(HFD)and fructose water for nine weeks,the mouse body weight is significantly increased,accompanied by an inflammatory state and increased expression of miR-133a in the adipose tissues and ovaries as well as accelerated follicle depletion.Although miR-133a is increased in the fat and ovaries of HFD mice,the increased miR-133a in the HFD ovaries is not derived from exosome transferred from obese adipose tissues but is synthesized by ovarian follicular cells in response to HFD-induced inflammation.In vivo experiments show that intrabursal injection of miR-133a agomir induces a decrease in primordial follicles and an increase in antral follicles and atretic follicles,which is similar to HFD-induced abnormal folliculogenesis.Overexpression of miR-133a modestly promotes granulosa cell apoptosis by balancing the expression of anti-apoptotic proteins such as C1QL1 and XIAP and pro-apoptotic proteins such as PTEN.Overall,this study reveals the function of miR-133a in obesityinduced ovarian folliculogenesis dysfunction and sheds light on the etiology of female reproductive disorders.Ruizhi Chen Xueqing Wu Han Qiu Baiming Yang Yao Chen Xiang Chen Yingshan Li Shaochun Yuan Dan Liu Luanjuan Xiao Yanhong Yu 2023Acta Biochimica et Biophysica Sinica2023,55,8:0
16Enhancement and recovery of photoluminescence and stability by multifunctional etching ligands treatment for perovskite nanocrystals显示文摘Perovskite nanocrystals(PNCs)have recently become promising optoelectronic materials due to their excellent photophysical properties.However,the highly dynamic binding state between ligands and the surface of PNCs has severely restricted their luminescent properties and stabilities.In this work,1,3-bisbenzyl-2-oxoimidazolidine-4,5-dicarboxylic acid(cycle acid,CA)is introduced as both an etchant and a ligand upon post-synthetic surface treatment of PNCs.By removing the imperfect octahedrons[Pb X_(6)]^(4-)and passivating the surface defects synergistically,this treatment improves photoluminescence quantum yields from 76%to 95%and enhances the stability of PNCs against polar solvent,moisture,heat,and illumination.Meanwhile,CA can effectively and instantly recover the luminescence emission for aged PNCs.As a result,the CA-Cs Pb Br_(3)PNCs and CA-Cs Pb IxBr_(3-x)PNCs are applied as color-converting layers on a blue LED chip for warm white light-emitting diodes(WLEDs)with a color coordinate of(0.41,0.40).Importantly,the CA-based WLED device exhibits superior stability in operational conditions.Yang Zhao Haipeng Zeng Xueqing Cai Yingshan Zhou Yangming Jiang Xin Zheng Lin Li Shujing Zhang Long Luo Weixi Li Xiaoru Zhang Ranran Liu Wenxi Liang Rui Guo Xiong Li 2023Journal of Energy Chemistry2023,,1:0
17Comparison of viral propagation and drug response among SARS-CoV-2 VOCs using replicons capable of recapitulating virion assembly and release显示文摘Several variants of concern(VOCs)have emerged since the WIV04 strain of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)was first isolated in January 2020.Due to mutations in the spike(S)protein,these VOCs have evolved to enhance viral infectivity and immune evasion.However,whether mutations of the other viral proteins lead to altered viral propagation and drug resistance remains obscure.The replicon is a noninfectious viral surrogate capable of recapitulating certain steps of the viral life cycle.Although several SARS-CoV-2 replicons have been developed,none of them were derived from emerging VOCs and could only recapitulate viral genome replication and subgenomic RNA(sgRNA)transcription.In this study,SARS-CoV-2 replicons derived from the WIV04 strain and two VOCs(the Beta and Delta variants)were prepared by removing the S gene from their genomes,while other structural genes remained untouched.These replicons not only recapitulate viral genome replication and sgRNA transcription but also support the assembly and release of viral-like particles,as manifested by electron microscopic assays.Thus,the S-deletion replicon could recapitulate virtually all the post-entry steps of the viral life cycle and provides a versatile tool for measuring viral intracellular propagation and screening novel antiviral drugs,including inhibitors of virion assembly and release.Through the quantification of replicon RNA released into the supernatant,we demonstrate that viral intracellular propagation and drug response to remdesivir have not yet substantially changed during the evolution of SARS-CoV-2 from the WIV04 strain to the Beta and Delta VOCs.Lingqian Tian Qiuhong Liu Rongjuan Pei Yingshan Chen Chonghui Xu Jielin Tang Hao Sun Kunpeng Liu Qi Yang Lei Yang Leshan Li Yongli Zhang Yuan Zhou Chao Shan Xue Hu Xinwen Chen Yun Wang 2022Virologica Sinica2022,37,5:0
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