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Analysis and research of long-term stability about the gob site in Northern Shaanxi Province

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Journal of Coal Science & Engineering(China) 2011年第1期17卷 16-21页

作者： zhang zhi-pei peng Hui College of Geology ＆ Environment Xi＇an University of Sincere and Teleology Xi＇an 710054 China

Based on the analysis of the basic characteristics for the gob site in Northern Shaanxi Province and the room and pillar mining way about coal mine, the variety rule of the coal beds below the site was studied by the using of FEM during the process of coal mining. The statuses of the stresses and strains and the varieties of the plastic area were simulated in the whole rock and coal pillars. The characters of stresses and deformation of the gob area of the coalmine were analyzed and evaluated after the site built in weathering. Moreover, the long-term stability of the gob area was predicted. As a result, the deformation of the gob area under the site is not been finished, and there is the danger that the gob site will collapsing as a whole; therefore, relative measures must be taken.

关键词： Northem Shaanxi the gob site room and pillar mining analysis and research of long-term stability numericalsimulation

First-Principles Electronic Structure of Cu^(+) Luminescence Centers in Cu-Doped ZnS

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Chinese Physics Letters 1998年第8期15卷 591-593页

作者： zhang zhi-peng SHEN Yao-wen HUANG Mei-chun Department of Physics Xiamen UniversityXiamen 361005

The electronic structures of various Cu^(+) luminescence centers in wurtzite ZnS are studied by using first-principles linear muffin-tin-orbital method combining atomic sphere *** results for ZnS:Cu:Cl and ZnS:Cu:Al show that Cu acceptor states are anomalously deep(beyond 2.7eV above the top of valence band)and located near the bottom of conduction band in these two *** the other hand,the results for ZnS:Cu with sulfur vacancies manifest that the Cu+center is an associated center,whose Cu d-like states are situated above the top of valence band.

关键词： band. ZnS:Cu conduction

Electronic Structure of Equilibrium-State TiN_(x) Films

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Chinese Physics Letters 1997年第7期14卷 542-545页

作者： zhang zhi-peng SHEN Yao-wen XU Wei HUANG Mei-chun Department of Physics Xiamen UniversityXiamen 361005

By using LMTO-ASA method and supercell approach,the self-consistent band structures forα-Ti,ε-Ti_(2)N,andδ-TiN have been ***,α-Ti,ε-Ti_(2)N,andδ-TiN were taken as three samples corresponding to TiNx films for x=0,0.5,***,according to the phase diagram of Ti-N and statistical supercell method,we have,for the first time to our knowledge,calculated the electronic structures of equilibrium-state TiN_(x) films for all compositions of x<1.0.

关键词： (x) method equilibrium

Electronic and Optical Properties of (GaN)_(n)/(AlN)_(n) (001) Superlattices

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Chinese Physics Letters 1999年第6期16卷 437-439页

作者： LI Kai-hang HUANG Mei-chun ZHU Zi-zhong zhang zhi-peng Department of Physics Xiamen UniversityXiamen 361005

The band structure of the short period zinc-blende(GaN)_(n)/(AlN)_(n)(001)superlattices has been calculated by means of semi-empirical tight-bin ding sp^(3)s^(*) *** superlattices energy gap dependence on layer number n is given *** the basis of the calculated eigenfunctions and eigenvalues of the superlattices(SL),the imaginary Parts of the dielectric function ε2(ω) of(GaN)_(n)/(AlN)_(n)(001)superlattices were *** order to compare with the optical properties of bulk zinc-blende GaN and AlN,we also calculated ε2(ω) of the two *** is shown that there are some discernible effects due to confinement and superlattice periodicity.

关键词： imaginary dielectric

Effect of SDBS on interfacial electron transfer at the liquid/liquid interface by thin layer method

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Chinese Chemical Letters 2009年第9期20卷 1115-1118页

作者： Xiu Hui Liu Cun Wu Dong Kai zhang Fu peng zhi Zhen Ding Xiao Quan Lu College of Chemistry & Chemical Engineering Northwest Normal University Lanzhou 730070 China

The effect of an adsorbed anionic surfactant sodium dodecyl benzene sulfonate （SDBS） on electron transfer （ET） reaction between ferricyanide aqueous solution and decamethylferrocene （DMFc） located on the adjacent organic phase was investigated for the first time by thin layer method. The adsorption of SDBS at the interface resulted in a decay in the cathodic plateau current of bimolecular reaction with increasing concentrations of SDBS in aqueous phase. However, the rate constant of electron transfer （ket） increased monotonically as the SDBS concentrations increased from 0 to 200 p, moFL. The experimental results showed that SDBS formed patches on the interface and influenced the structure of electrical double layer. 2009 Xiao Quan Lu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Anionic surfactant Liquid/liquid interface Electron transfer Thin layer method

Crystal Structures and Antibacterial Activities of 1,3-Phenylenebis(oxy)diacetic Acid Dihydrate and 4,4'-Bipyridine Cocrystal

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Chinese Journal of Structural Chemistry 2015年第5期34卷 650-658页

作者： YIN Hong-Shan YANG Gao-Shan LIU Chong-Bo HE An-Wang ZHOU Yu-Bing zhang zhi-peng LI Huai-Meng College of Environment and Chemical Engineering Nanchang Hangkong University

Single crystals of two 1,3-phenylenebis（oxy）diacetic acid（C10H10O8） compounds 1 and 2 were obtained via slow *** compounds were characterized by elemental analysis,IR and single-crystal X-ray *** 1（C10H14O8） crystallizes in the triclinic system,space group P1 with a = 6.3751（6）,b = 8.5311（8）,c = 11.4510（11）A,α = 93.3650（10）,β = 105.3190（10）,γ = 97.2140（10）°,V = 593.15（10） A^3,Z = 2,Mr = 262.21,Dc = 1.468 g/cm^3,F（000） = 276,GOOF = 1.005,° = 0.129 mm^-1,the final R = 0.0361 and w R = 0.0802 for 1854 observed reflections with I 〉 2σ（I）.Compound 2（C30H28N2O12） crystallizes in the triclinic system,space group P1 with a = 9.7416（13）,b = 11.839（2）,c = 12.9828（13） A,α = 74.191（4）,β = 77.953（2）,γ = 74.726（3）°,V = 1374.5（3） A^3,Z = 2,Mr = 608.54,Dc = 1.470 g/cm^3,F（000） = 636,GOOF = 1.061,° = 0.115 mm^-1,the final R = 0.0500 and w R = 0.1221 for 3966 observed reflections with I 〉 2σ（I）.Both compounds 1 and 2 exhibit 3D supramolecular structures under hydrogen bonding *** results of preliminary antibacterial activity show that the title compounds display moderate antibacterial activities against the tested gram positive bacteria（***,*** and ***） and gram negative bacteria（*** and ***）.

关键词： 1 3-phenylenebis(oxy)diacetic acid cocrystal dihydrate crystal structure antibacterial activity

Genome-wide association and linkage mapping strategies reveal the genetic loci and candidate genes of important agronomic traits in Sichuan wheat

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Journal of Integrative Agriculture 2023年第11期22卷 3380-3393页

作者： zhang zhi-peng LI Zhen HE Fang Lü Ji-juan XIE Bin YI Xiao-yu LI Jia-min LI Jing SONG Jing-han PU zhi-en MA Jian peng Yuan-ying CHEN Guo-yue WEI Yu-ming ZHENG You-liang LI Wei State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Sichuan Agricultural UniversityChengdu 611130P.R.China College of Agronomy Sichuan Agricultural UniversityChengdu 611130P.R.China Triticeae Research Institute Sichuan Agricultural UniversityChengdu 611130P.R.China Sichuan Provincial Seed Station Chengdu 610044P.R.China Huaiyin Institute of Agricultural Sciences of Xuhuai Area in Jiangsu Huai'an 223001P.R.China Beijing Foreign Studies University Beijing 100081P.R.China

Increasing wheat yield is a long-term goal for wheat breeders around the *** elite genetic resources and dissecting the genetic basis of important agronomic traits in wheat are the necessary methods for high-yield wheat *** study evaluated nine crucial agronomic traits found in a natural population of 156 wheat varieties and77 landraces from Sichuan,China in seven environments over two *** results of this investigation of agronomic traits showed that the landraces had more tillers and higher kernel numbers per spike (KNS),while the breeding varieties had higher thousand-kernel weight (TKW) and kernel weight per spike (KWS).The generalized heritability (H2) values of the nine agronomic traits varied from 0.74 to *** analysis suggested that the natural population could be divided into three groups using 43 198 single nucleotide polymorphism (SNP) markers from the wheat 55K SNP chip.A total of 67 quantitative trait loci (QTLs) were identified by the genome-wide association study (GWAS) analysis based on the Q+K method of a mixed linear *** important QTLs were analyzed in this *** haplotypes of ***-7BL.1 for fertile tillers number (FTN),three haplotypes of ***-1AL.2 for KNS,and four haplotypes of ***-3BS.1 for TKW were ***-Hap2,KNS-Hap1,and TKW-Hap2 were excellent haplotypes for each QTL based on the yield performance of 42 varieties in regional trials from 2002 to *** varieties with all three haplotypes showed the highest yield compared to those with either two haplotypes or one *** addition,the KASP-AX-108866053 marker of QTL ***-1AL.2 was successfully distinguished between three haplotypes(or alleles) in 63 varieties based on the number of kernels per spike in regional trials between 2018 and *** genetic loci and reliable makers can be applied in marker-assisted selection or map-based gene cloning for the genetic improvement of wheat yield.

关键词： Sichuan wheat GWAS yield traits haplotype analysis KASP

Electrodeposition and Characterization of Polyaniline Film

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Chemical Research in Chinese Universities 2012年第1期28卷 133-136页

作者： WANG Hong-zhi, zhang peng, zhang Wei-guo and YAO Su-wei Shanshan Research Office of Surface Technology, College of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China Tianjin Univ Shanshan Res Off Surface Technol Coll Chem Engn Tianjin 300072 Peoples R China

Abstract Polyaniline film was prepared by electrochemical method in an acidic solution of aniline. The micromor- phology of the polyaniline film was transformed to three-dimensional network structure instead of little particles while the deposition time was extended. The peak wavelength of the photoluminescence spectrum was 491 nm. The luminous intensity increased with the extension of deposition time, and so did the electrochemical activity.

关键词： Polyaniline Electrodeposition Photoluminescence Electrochemical activity

Analysis of hydrogeolgical characteristics and water environmental impact pathway of typical shale gas exploration and development zones in Sichuan Basin, China

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Journal of Groundwater Science and Engineering 2019年第3期7卷 195-213页

作者： SUN Dong LIU Xin-ze YANG Hai-jun CAO Nan zhang zhi-peng CHEN Yin-song LI Da-meng Chengdu Hydrogeology and Engineering Geology Center Sichuan Bureau of Geology and Mineral Exploration and DevelopmentChengdu 610081China Sichuan Environmental Protection Engineering and Technology Center for Groundwater Pollution Prevention and Control Chengdu 610081China Sichuan Huadi New Energy and Environmental Protection Technology Co. Ltd.Chengdu 610081China

Studying the influence of shale gas exploration and development on groundwater environment is the basis of guiding water environment protection in the process of shale gas exploration and *** environmental pollution is concealed,complex and *** it is difficult to control the pollution,the current commercial shale gas development zones in Sichuan Basin that are mostly located in karst areas and highly sensitive to groundwater will be vulnerable to the impact of shale gas exploration and *** on the hydrogeological conditions of shale gas exploration and development area and combined with engineering analysis of exploration and development,various risk pathways that may affect the groundwater environment during process of shale gas exploration,mining well construction,mining operations and other stages were identified in this *** existing risk pathways were proved by verification of typical areas and should not be *** on the actual situation of typical areas,the countermeasures of groundwater environmental protection in the process of shale gas exploration and development in karst areas were *** is believed that the groundwater environment can be better protected by strengthening administration,research and application of new technologies,precise design,hydrogeological conditions,and research and feedback of groundwater environmental protection.

关键词： Groundwater environment Shale gas Impact pathway analysis