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Chinese Journal of Structural Chemistry 2005年第12期24卷 1462-1467页

作者： li Feng li tao-hai CAO Rong State Key Laboratory of Structural Chemistr3 Fujian Institute of Research on the Structure of Matter The Chinese Academy of Sciences Fujian Fuzhou 350002 China

Two coordination polymers have been synthesized from cpg/4,4＇-bipy/metal ions reaction system, [Zn（cpg）（4,4＇-bipy）0.5（H2O）]·H2O 1 and [Cd（cpg）（4,4＇-bipy）0.5（H2O）2]·H2O 2. X- ray analyses show that different coordination geometries of zinc and cadmium ions lead to similar ladder structures （tetra-for zinc ion and hexa- for cadmium ion）, in which all the flexible cpg molecules exist as single conformations of anti-form.

关键词： hydrothermal synthesis flexible ligand prediction

Relative position determination between Chang'E-3lander and rover using in-beam phase referencing

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Science China(Information Sciences) 2015年第9期58卷 161-170页

作者： ZHOU Huan li hai tao DONG Guangliang Beijing Institute of Tracking and Telecommunications Technology

Chang'E-3 is China's first lunar surface exploration mission, as a part of the second phase of China's Lunar Exploration Program(CLEP). It landed successfully in the northwest of Mare Imbrium on December 14,2013, incorporating two probes, a lander and a rover named Yutu. The execution of the cooperative science tasks required an accurate determination of the relative position between the lander and the rover. In-beam phase referencing experiments have been conducted with the Chinese VLBI Network(CVN) to accurately image the rover in reference to the stationary lander in order to obtain their offsets in Right Ascension and Declination,which were then transformed into the lunar local coordinate system to acquire their relative position on the lunar surface. The observations and the data processing procedures are described in this paper. Images of the rover in six epochs between December 15 and 21, 2013 were made, resulting in accurate positions of the rover that are consistent with the visual localization approach. Through measurement of the locations of the rover's omnidirectional antenna with respect to the lander's directional antenna before their separation, and the recognition of the rover's turning actions during its exploratory moves, we demonstrate that the accuracy of relative position determined in this way could reach the meter level and the resolution is better than 1 m.

关键词： Chang’E-3 relative position determination in-beam phase referencing Chinese VLBI Network lunar exploration

Synthesis and Characteristics of Electrodeposited CoxZn1-x Nanorods

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Chinese Physics Letters 2010年第6期27卷 203-205页

作者： liU li-Hu GU Jian-Jun li hai-tao CAI Ning SUN Hui-Yuan College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016 Key Laboratory of Advanced Films of Hebei Province Shijiazhuang 050016 Department of Physics Hebei Chengde Teachers College Chengde 067000

CoxZn1-x nanorod arrays were fabricated by electrodeposition in porous anodic aluminum oxide templates at different electric potentials. X-ray diffraction and transmission electron microscopy indicate that highly-ordered and uniform nanorods have been fabricated. The amounts of Co and Zn contents are investigated using energy dispersive spectroscopy, which demonstrates that the atom ratio of the alloy nanorods changes with the deposition potential. In addition, magnetic measurements show that the magnetic isotropy Co-rich CoZn nanorods will change to magnetic anisotropy nanorods with the easy axis parallel to the rod long axis with decreasing Co content.

关键词： ELECTROFORMING MICROFABRICATION COBALT compounds POROUS materials ALUMINUM oxide X-ray diffraction MAGNETIC measurements ANISOTROPY

A new perspective of ecosystem health

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Journal of Forestry Research 2011年第1期22卷 127-132页

作者： li hai-tao GU Chen-jie liANG tao JOHN Ranjeet XU Jian-ye Institute of Geographic Sciences and Natural Resources Research CAS11 Datun Road Beijing 100101 China. Department of Environment Science University of Toledo 43606OhioUS.

Ecosystem health has attracted considerable attention from different disciplines in recent years. However, it still remains a disputed issue whether to focus on its general concept or on operational practice. As a result, these disputations have caused confusion and limited further research in the field of ecosystem health. In this paper, we attempt to introduce a new perspective to the concept of ecosystem health. With the aid of modern statistical methodology, such as factor analysis and normal distribution theory, we provide a conceptual approach to the quantitative assessment of ecosystem health and our method could be applied to various categories of ecosystems.

关键词： ecosystem health majority factor analysis normal distribution theory

Synthesis of super high molecular weight copolymer of AM/NaA/AMPS by oxidation–reduction and controlled radical polymerization

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Petroleum Science 2020年第1期17卷 242-254页

作者： Ji Yan-feng Cao Xu-long Zhu Yang-wen Xu Hui Sun Xiu-zhi li hai-tao Exploration and Development Research Institute Shengli OilfieldDongying 257000Shandong ProvincePeople’s Republic of China

Super high molecular weight copolymers of AM/NaA/AMPS were prepared by oxidation–reduction[OR-P(AM/NaA/AMPS)]and controlled radical polymerization[CR-P(AM/NaA/AMPS)].The resulting copolymers were fully characterized,and the reaction conditions for their preparation were ***-P(AM/NaA/AMPS),CR-P(AM/NaA/AMPS),and conventional partially hydrolyzed polyacrylamide(HPAM)in brine solution were comprehensively characterized by thermogravimetric analysis,scanning electron microscopy,atomic force microscopy,and dynamic light ***(AM/NaA/AMPS)and CR-P(AM/NaA/AMPS)containing AMPS monomer showed better salt resistance,temperature tolerance,and viscosification property than the conventional HPAM polymer,making them more promising for enhanced oil *** comprehensive comparison and analysis,it was found that OR-P(AM/NaA/AMPS)was more conducive for high-temperature condition due to the existence of xanthone in OR-P(AM/NaA/AMPS).On the other hand,CR-P(AM/NaA/AMPS)was more suitable for high-mineral atmosphere,which could be attributed to its higher intrinsic viscosity.

关键词： Oxidation–reduction polymerization Controlled radical polymerization Elemental composition Thermogravimetry Microcosmic aggregation morphology

Identification of medicinal plants within the Apocynaceae family using ITS2 and psbA-trnH barcodes

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Chinese Journal of Natural Medicines 2020年第8期18卷 594-605页

作者： LV Ya-Na YANG Chun-Yong SHI lin-Chun ZHANG Zhong-lian XU An-Shun ZHANG li-Xia li Xue-Lan li hai-tao Yunnan Branch Institute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeJinghong 666100China Key Laborartory of Dai and Southern Medicine of Xishuangbanna Dai Autonomous Prefecture Jinghong 666100China Key Lab of Chinese Medicine Resources Conservation State Administration of Traditional Chinese Medicine of the People’s Republic of ChinaInstitute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100193China Engineering Research Center of Tradition Chinese Medicine Resource Ministry of EducationInstitute of Medicinal Plant DevelopmentChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100193China

To ensure the safety of medications,it is vital to accurately authenticate species of the Apocynaceae family,which is rich in poisonous medicinal *** identified Apocynaceae species by using nuclear internal transcribed spacer 2(ITS2)and psb Atrn H based on experimental *** identification ability of ITS2 and psb A-trn H was assessed using specific genetic divergence,BLAST1,and neighbor-joining *** DNA barcoding,ITS2 and psb A-trn H regions of 122 plant samples of 31 species from 19 genera in the Apocynaceae family were *** PCR amplification for ITS2 and psb A-trn H sequences was 100%.The sequencing success rates for ITS2 and psb A-trn H sequences were 81%and 61%,*** data involved 53 sequences of the ITS2 region and 38 sequences of the psb A-trn H region were downloaded from Gen ***,the analysis showed that the interspecific divergence of Apocynaceae species was greater than its intra-specific *** results indicated that,using the BLAST1 method,ITS2 showed a high identification efficiency of 97%and 100%of the samples at the species and genus levels,respectively,via BLAST1,and psb A-trn H successfully identified 95%and 100%of the samples at the species and genus levels,*** barcode combination of ITS2/psb A-trn H successfully identified 98%and 100%of samples at the species and genus levels,***,the neighbor joining tree method also showed that barcode ITS2 and psb A-trn H could distinguish among the species within the Apocynaceae ***2 is a core barcode and psb A-trn H is a supplementary barcode for identifying species in the Apocynaceae *** results will help to improve DNA barcoding reference databases for herbal drugs and other herbal raw materials.

关键词： Apocynaceae DNA barcoding ITS2 psbA-trnH Species identification

ZnO掺杂对Ca_(0.25)(li_(0.43)Sm_(0.57))_(0.75)TiO_3陶瓷烧结性能和微波介电性能的影响

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无机材料学报 2015年第4期30卷 369-373页

作者：李海涛李谦闫焉服许荣辉河南科技大学材料科学与工程学院洛阳471003

采用溶胶-凝胶法制备Ca0.25(li0.43Sm0.57)0.75Ti O3(CLST)微波介质陶瓷纳米粉体,研究了Zn O掺杂量和烧结温度对CLST+xmol%Zn O陶瓷烧结性能和微波介电性能的影响。XRD分析结果表明:随着Zn O掺杂量x的增加,陶瓷的晶体结构从正交相变为... 详细信息

采用溶胶-凝胶法制备Ca0.25(li0.43Sm0.57)0.75Ti O3(CLST)微波介质陶瓷纳米粉体,研究了Zn O掺杂量和烧结温度对CLST+xmol%Zn O陶瓷烧结性能和微波介电性能的影响。XRD分析结果表明:随着Zn O掺杂量x的增加,陶瓷的晶体结构从正交相变为伪立方相,并在x≥1.5的样品中出现了杂相。CLST+xmol%Zn O陶瓷的致密化烧结温度随x的增加而降低,x=1.0的样品的致密化烧结温度比x=0的降低了200℃。介电常数εr和频率品质因数Qf随x增加和烧结温度的升高具有最优值,频率温度系数则单调降低。x=1.0的样品在1100℃烧结时具有优异的综合性能:ρ=4.85 g/cm3,εr=102.8,Qf=5424 GHz,τf=-8.2×10-6/℃。表明Zn O掺杂的CLST陶瓷是一种很有发展潜力的微波介质陶瓷。

关键词：溶胶-凝胶 CLST 微波介质陶瓷致密化烧结

Characterization of Porcine Matrix Metalloproteinase 23 (pMMP-23) Gene and Its Association with litter Size Traits

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Journal of Integrative Agriculture 2013年第1期12卷 103-109页

作者： NIU Bu-yue LAN Xiao-ming YAN Xiao-hong DI Sheng-wei WANG Yang li hai-tao XIONG Yuan- zhu WANG Xi-biao College of Animal Science and Technology Northeast Agricultural University Key Laboratory of Swine Genetics and Breeding Ministry of Agriculture/Key Laboratory of Agricultural Animal Genetics Breeding and Reproduction Ministry of Education/Huazhong Agricultural University

The matrix metalloproteinase 23 （MMP-23）, which might play a role in ovulation in mammals, was one of the promising candidate genes for litter size traits in pigs. In the present research, partial sequence of porcine MMP-23 （pMMP-23） gene, including exons 2-8 （GenBank： EU360790）, was obtained. Real-time PCR analysis revealed that pMMP-23 gene was highly expressed in ovary. PCR-Sau3A I-RFLP and PCR-Acc II-RFLP assay were established to detect a C/T mutation in exon 3 （EU360790： g. 269C〉T） and an A/G mutation in exon 4 （EU360790： g. 505A〉G）, respectively. Association study for these two SNPs with litter size was assessed in three independent populations （Minzhu, Landrace I and Landrace II）. Statistical analysis demonstrated that for second and subsequent litters, TT sows produced more TNB than CC pigs in Landrace breed （P〈0.05） at g. 269C〉T locus, and the additive effect was significant （P〈0.05）; GG sows produced more TNB and NBA than AA pigs in Minzhu （P〈0.01） and Landrace breeds （P〈0.05） at g. 505A〉G locus, and the additive effect was significant （P〈0.01 or P〈0.05）. Our study suggested that the pMMP-23 gene might be a novel candidate gene for litter size traits, and g. 505A〉G locus might be a useful molecular marker for marker assisted selection （MAS）.

关键词： pig MMP-23 molecular cloning expression litter size

基于贪婪搜索的IEEE 802.16j带宽分配算法研究

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电子科技大学学报 2014年第5期43卷 653-657页

作者：黎海涛李艳北京工业大学电子信息与控制工程北京朝阳区100124

为满足IEEE 802.16j网络中不同类型业务的带宽需求,同时达到可接入用户数最多的目的,提出了一种基于贪婪搜索的基站、中继站联合带宽分配算法。其中,固定带宽的主动授权业务由中继站分配带宽;基站分配其他类型业务所需的最少带宽。该算... 详细信息

为满足IEEE 802.16j网络中不同类型业务的带宽需求,同时达到可接入用户数最多的目的,提出了一种基于贪婪搜索的基站、中继站联合带宽分配算法。其中,固定带宽的主动授权业务由中继站分配带宽;基站分配其他类型业务所需的最少带宽。该算法利用贪婪搜索寻求最优用户组,并将剩余带宽分配给该组的用户。仿真结果表明,该贪婪搜索带宽分配算法能保证网络接入的用户数最多,且复杂度低于一般的穷举搜索带宽分配算法。

关键词：带宽分配穷举搜索贪婪搜索最优用户组

基于室内地图环境信息的多楼层WiFi定位技术研究

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电子科技大学学报 2017年第1期46卷 32-37页

作者：黎海涛齐双北京工业大学电子信息与控制工程北京朝阳区100124

针对多楼层环境的室内定位需求,提出了一种基于地图环境先验信息的WiFi指纹定位方法。首先在离线阶段建立地图环境信息模型并对指纹进行仿射传播聚类,然后在线阶段采用RSSI阈值的楼层判别算法确定楼层,并结合地图信息模型和最大后验估... 详细信息

针对多楼层环境的室内定位需求,提出了一种基于地图环境先验信息的WiFi指纹定位方法。首先在离线阶段建立地图环境信息模型并对指纹进行仿射传播聚类,然后在线阶段采用RSSI阈值的楼层判别算法确定楼层,并结合地图信息模型和最大后验估计方法计算出终端位置。实验结果表明,相比于传统的指纹定位方法,室内定位技术不仅能提高定位精度,并且降低了在线阶段指纹匹配计算的复杂度。

关键词：仿射传播聚类指纹楼层判别室内定位:地图信息