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Search Results: 1 - 10 of 151736 matches for " Xue-li ZHENG "
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Innate immune response to dengue virus
Xue-li ZHENG
Medical Journal of Chinese People's Liberation Army , 2012,
Abstract: Dengue fever/dengue hemorrhagic fever (DF/DHF) has emerged as the most important mosquito-borne viral diseases in tropical areas. DF/DHF is one of the problems which severely threaten public-health world-wide. To understand innate immune response of the body to pathogens is of significant significance in controlling dengue virus infection. The invasion of the virus to the host cell is the first and critical stage in the infectious process and the mechanism and identity of cellular proteins involved in this process remain largely unknown. Interstitial dendritic cells (DCs) are target cells for DF and also believed to constitute the first line of the innate host defense against invasion of dengue viruses. There are two innate immune pathways that activate the host innate immunity against viral infection. One of the pathways utilizes members of the Toll-like receptor (TLR) family to detect viruses that enter the endosome through endocytosis and induce production of interferon (IFN) by signal protein, and finally activates translation factors such as NF-κB, interferon regulatory factor (IRF) 7 and IRF5. The other antiviral pathway involves the RNA helicase RIG-I as the receptor for intracellular viral double-stranded RNA (dsRNA). The closely related microRNA (miRNA) and RNAi pathways have emerged as important regulators of virus–host cell interactions.
Global Uniqueness and Solvability for Tensor Complementarity Problems
Xue-Li Bai,Zheng-Hai Huang,Yong Wang
Mathematics , 2015,
Abstract: Recently, the tensor complementarity problem (TCP for short) has been investigated in the literature. An important question involving the property of global uniqueness and solvability (GUS-property) for a class of TCPs was proposed by Song and Qi in their paper "Properties of Some Classes of Structured Tensors". In the present paper, we give an answer to this question by constructing two counter-examples. We also show that the solution set of this class of TCPs is nonempty and compact. In particular, we introduce a class of related structured tensors, and show that the corresponding TCP has the GUS-property.
Exceptionally Regular Tensors and Tensor Complementarity Problems
Yong Wang,Zheng-Hai Huang,Xue-Li Bai
Mathematics , 2015,
Abstract: Recently, many structured tensors are defined and their properties are discussed in the literature. In this paper, we introduce a new class of structured tensors, called exceptionally regular tensor, which is relevant to the tensor complementarity problem. We show that this class of tensors is a wide class of tensors which includes many important structured tensors as its special cases. By constructing two examples, we demonstrate that an exceptionally regular tensor can be, but not always, an $R$-tensor. We also show that within the class of the semi-positive tensors, the class of exceptionally regular tensors coincides with the class of $R$-tensors. In addition, we consider the tensor complementarity problem with an exceptionally regular tensor or an $R$-tensor or a $P_0+R_0$-tensor, and show that the solution sets of these classes of tensor complementarity problems are nonempty and compact.
A New Species of the Genus Hedinia Ostenf.(Cruciferae) from Xizang
藏荠属一新种

He Xue-li,An Zheng-xi,
贺学礼
,安争夕

中国科学院研究生院学报 , 1996,
Abstract:
Trapezium-based Non-symmetry Anti-packing Representation Method for Binary Images
梯形子模式非对称逆布局二值图像表示方法

HUANG Wei,CHEN Chuan-bo,ZHENG Yun-ping,WU Xue-li,
黄巍
,陈传波,郑运平,吴雪丽

计算机科学 , 2008,
Abstract: Although the hierarchical structures have many merits in image representation and processing,their compactness is impaired because of excessive emphases upon the symmetry of divisions and the symmetry of nodes.Inspirited by the concept of the famous Packing Problem,based on non-symmetry anti-packing pattern representation model,a trapezium-based non-symmetry anti-packing representation method for binary images is presented.After giving encoding and decoding algorithms,this paper analyses the time-and space-...
Overlapping Rectangle Multi-valued Image Representation and its Application in Geometric Moments Generation
可重叠矩形多值图像表示及其上的几何矩生成

HUANG Wei,CHEN Chuan-bo,ZHENG Yun-ping,WU Xue-li,
黄巍
,陈传波,郑运平,吴雪丽

计算机科学 , 2008,
Abstract: A lossless multi-valued image representation,referred as to Overlapping Rectangle Multi-valued Image Representation(ORMIR)was presented in this paper for the fast generation of geometric moments of multi-valued images.ORMIR divides a multi-valued image into some overlapping rectangles with some basic colors and settles these rectangles in a child-sibling tree.By impairing the constraint in Image Block Representation where all the pixels covered with a distinct rectangle must have the same color,ORMIR has re...
中药大黄对正畸固定矫治中龈炎的治疗研究
Effect of Rhubarb on the Treatment of Gingivitis in Orthodontic Fixed Treatment

杜建东,郑雪莉,杨兰,张颖杰,韩保迪
DU Jian-dong
, ZHENG Xue-li, YANG Lan, ZHANG Ying-jie, HAN Bao-di

- , 2016, DOI: 10.13701/j.cnki.kqyxyj.2016.08.014
Abstract: 摘要 目的:评价中药大黄对正畸固定矫治中龈炎治疗的临床疗效。方法:选择牙周健康者20例(尚未矫治)和矫治6个月临床诊断为牙龈炎的患者60例为研究对象,牙周健康患者20例设为牙周健康组,60例牙龈炎患者随机分为3组:大黄组、明胶海绵组和对照组。分别于治疗前采集4组研究对象的牙周临床指数和龈沟液标本,使用ELISA法测量龈沟液中白介素-1β的含量,比较组间各项指标间的差异。对牙龈炎3组患者,其中大黄组用大黄明胶海绵药条,明胶海绵组用灭菌蒸馏水明胶海绵条,分别置于龈袋内,每周上药1次,共4次,对照组患者龈袋内不放任何药物。于4周后重新采样比较牙周治疗前后上述指标间的差异。结果:牙龈炎组治疗前牙周临床指数、龈沟液IL -1β浓度均显著高于牙周健康组(P<0.05),大黄组、明胶海绵组与对照组比较无显著性差异。治疗后明胶海绵组上述指标与对照组比较无显著性差异,且明显高于牙周健康组(P<0.05)。治疗后明胶海绵组和对照组分别与治疗前比较均无显著性差异。治疗后大黄组上述指标相比治疗前及对照组均明显降低(P<0.05),与牙周健康组比较,龈沟出血指数(SBI)接近正常。结论:中药大黄对正畸固定矫治中龈炎具有明显的治疗效果
Effects of AM fungi on the growth and protective enzymes of cotton under NaCl stress
NaCl胁迫下AM真菌对棉花生长和叶片保护酶系统的影响

HE Xue-Li,
贺学礼

生态学报 , 2005,
Abstract: The effects of AM fungi on the growth and protective enzymes in cotton plants inoculated Glomus mosseae and Glomus caledonium under salt-caused stress conditions was studied at the levels of 0,0.1%,0.2%,0.3% NaCl added to the soil for the potted plant. The results showed that application amount of NaCl significantly influenced the growth of cotton plants and inoculation effect of AM fungi. After inoculation mycorrhizal infection rate was promoted, and total dry weights and output of cotton were increased, w...
Scale effects of landscape research in Kerqin Sandy Land
科尔沁沙地景观研究中的尺度效应

CHANG Xue-Li,
常学礼

生态学报 , 2003,
Abstract: There is highest heterogeneous on sandy land landscape due to the faci le changing of topography and land cover in Kerqin Sandy Land. The main causes, which induce the landscape changing, include unsuitable human economic activity, precipitation fluctuation, and wind erosion under huge Quaternary sand sediment condition in this area. Therefore, what are relation between the landscape char acters and research scales in different levels is a principal threshold for the landscape study. According to studie...
Diversity analysis of the largest subunit of the multi-component phenol hydroxylase (LmPH) gene from the phenol degrading microbial communities of an aeration tank of a coking wastewater treatment plant
焦化废水处理厂接触氧化池中降酚菌群的苯酚羟化酶大亚基基因多样性

ZHANG Xue-Li,
张学礼

生态学报 , 2005,
Abstract: The diversity of the largest subunit of the multi-component phenol hydroxylase (LmPH) gene in four compartments of the aeration tank (O1-O4) of a coking wastewater treatment plant in Shanghai was analyzed via PCR-TGGE (temperature gradient gel electrophoresis) analysis. TGGE fingerprints were identical in all four compartments, suggesting that the phenol-degrading microbial populations in the different compartments of the aeration tank were highly similar. A LmPH gene clone library from the fourth compartment (O4) was constructed and the nucleotide sequences of 49 randomly selected clones were determined. The 49 clones were classified into 16 groups (amino acid sequences with 100% similarity were defined as one group) based on the deduced amino acid sequences. Five predominant LmPH groups were identified, each of which had more than four clones. Each of the other 11 groups were represented by one clone. Seven LmPH groups had more than 90% similarity with their nearest LmPHs in the GenBank, while 2 groups had less than 80%. Phylogenetic analysis of the partial amino acid sequences of the LmPHs indicated that most of the clones in the library (92%) were affiliated with low-Ks (affinity constants) LmPH, while only one clone (L-SJ32) was affiliated with high-Ks LmPH. These results suggest that LmPH genes were very diverse in the coking wastewater and that the low-Ks LmPHs were the predominant type involved in phenol degradation. Since most of the previously isolated phenol-degrading bacteria had high-Ks LmPHs, this indicates that traditional enrichment culture methods may not have identified the key functional bacteria from this environment.
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