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Chinese Journal of Structural Chemistry 2020年第8期39卷 1503-1508,1361页

作者： LAI Heng-Dong LIN qi-pu State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China

Under solvothermal conditions,two ribbon-shaped chalcogenidometalate coordination compounds(butyl-Sn)4S8M2(TEPA)2(M=Mn(1),Ni(2),TEPA=tetraethylenepentamine),have been synthesized and characterized by elemental analysis,energy dispersive X-ray,infrared/ultraviolet-visible spectroscopy,thermogravimetric analysis,single-crystal and powder X-ray *** 1 and 2 crystallize in the triclinic space group P1 with a=13.999(3),b=14.658(4),c=16.150(4)A,a=68.78(3)°,β=69.12(3)°,γ=72.07(3)°,V=2825.0(14)A3,Z=2,Mr=1448.28,μ=2.503 mm-1,F(000)=1444,GOOF=1.001,R=0.0629 and wR=0.1286 for 12855 observed reflections with I>2σ(I)for 1;and a=11.029(3),b=11.858(2),c=11.888(3)A,a=87.27(2)°,β=69.10(2)°,γ=83.63(2)°,V=1443.6(6)A^3,Z=1,Mr=1455.78,μ=2.660 mm^-1,F(000)=728,GOOF=1.017,R=0.0464 and wR=0.1185 for 9267 observed reflections with I>2σ(I)for 2,*** 1 and 2 are composed of linear hexamer{Sn4M2}(M=Mn for 1,and Ni for 2)with 8μ2-S2-bridges and 2 TEPA terminal *** the quite large inter-paramagnetic-cation spacing(dMn-S-Sn-S-Sn-S-Sn-S-Sn-S-Mn=13.485 A,dNi-S-Sn-S-Sn-S-Sn-S-Sn-S-Ni=14.078 A),two samples exhibit distinct ferromagnetic-like behaviors with the intradimer coupling constant(J)and Weiss(θ)values up to 6.8 cm^-1 and 8.5 K for 1 and 17.2 cm-1 and 21.1 K for 2 calculated from the temperature dependence of the magnetic susceptibility.

关键词： chalcogenidometalates organotin-sulfides linear complexes magnetic properties

Shear sliding of rough-walled fracture surfaces under unloading normal stress

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第10期15卷 2658-2675页

作者： qian Yin Chun Zhu Jiangyu Wu Hai pu qi wang Yuanchao Zhang Hongwen Jing Tianci Deng State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and TechnologyXuzhou221116China School of Earth Sciences and Engineering Hohai UniversityNanjing210098China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu610059China State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing100083China College of Civil Engineering Fuzhou UniversityFuzhou350108China

Through high-precision engraving,self-affine sandstone joint surfaces with various joint roughness coefficients(JRC=3.21e12.16)were replicated and the shear sliding tests under unloading normal stress were conducted regarding various initial normal stresses(1e7 MPa)and numbers of shearing cycles(1 e5).The peak shear stress of fractures decreased with shear cycles due to progressively smooth surface morphologies,while increased with both JRC and initial normal stress and could be verified using the nonlinear Barton-Bandis failure *** joint friction angle of fractures exponentially increased by 62.22%e64.87%with JRC while decreased by 22.1%e24.85%with shearing *** unloading normal stress,the sliding initiation time of fractures increased with both JRC and initial normal stress due to more tortuous fracture morphologies and enhanced shearing resistance *** surface resistance index(SRI)of fractures decreased by 4.35%e32.02%with increasing shearing cycles due to a more significant reduction of sliding initiation shear stress than that for sliding initiation normal stress,but increased by a factor of 0.41e1.64 with *** sliding initiation,the shear displacement of fractures showed an increase in power *** defining a sliding rate threshold of 5105 m/s,transition from“quasi-static”to“dynamic”sliding of fractures was identified,and the increase of sliding acceleration steepened with JRC while slowed down with shearing *** normal displacement experienced a slight increase before shear sliding due to deformation recovery as the unloading stress was unloaded,and then enhanced shear dilation after sliding initiation due to climbing effects of surface *** was positively related to the shear sliding velocity of *** characteristics of the fracture surfaces after shearing failure were evaluated using binary calculation,indicating an increasing shear area ratio by 45.24%e91.02%with normal stress.

关键词： Unloading normal stress Rough fracture surface Shear sliding Normal displacement Shear wear characteristics

基于水动力数值计算的小流域设计洪水模拟研究

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水电与抽水蓄能 2024年第4期10卷 14-19页

作者：王盼程龙蒲博文郭上渲歧雅菲中国电建集团西北勘测设计研究院有限公司陕西省西安市710065

基于水动力数值模拟方法,选择广州市花都区新街河流域作为研究区域,设计洪水计算分为天然和城市两类下垫面来考虑。采用MIKE11构建一维河道水动力模型,MIKE Urban构建管网水流模型,MIKE FLOOD耦合一维水动力模型与管网水流模型,推求新... 详细信息

基于水动力数值模拟方法,选择广州市花都区新街河流域作为研究区域,设计洪水计算分为天然和城市两类下垫面来考虑。采用MIKE11构建一维河道水动力模型,MIKE Urban构建管网水流模型,MIKE FLOOD耦合一维水动力模型与管网水流模型,推求新街河流域不同河道断面处的典型频率设计洪水。将耦合模型计算的设计洪水成果与传统水文分析方法计算的设计洪水成果进行对比,分析考虑了城市管网后流域洪水计算发生的变化;根据研究结果,对比综合单位线法和城市洪水耦合模型两种方法的计算结果,整体来说耦合模型计算的设计洪水成果偏大,符合一般地区城市化后洪水过程洪峰增大的变化规律;部分河涌耦合模型的设计洪水成果偏小,与径流在复杂的城市管网中的流动滞时、管径过流能力不足等原因有关。

关键词：水动力数值计算 MIKE 耦合模型城市设计洪水

泰兴市非饱和带与饱和带间固液界面传质模型的推导

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环境保护科学 2024年第2期50卷 154-160页

作者：高琪王海芳吕溥李金惠李鑫中北大学环境与安全工程学院太原030051 清华大学环境学院北京100084 清华大学巴塞尔公约亚太区域中心北京100084

非饱和带与饱和带紧密相联,建立两者交界处的固液界面传质模型,可以为非饱和带耦合饱和带模型提供一定理论基础,对更好地预测地下水污染趋势也非常有意义。文章以江苏省泰兴市为研究对象,将吸附与解吸、颗粒薄膜扩散、分配作用、稀释作... 详细信息

非饱和带与饱和带紧密相联,建立两者交界处的固液界面传质模型,可以为非饱和带耦合饱和带模型提供一定理论基础,对更好地预测地下水污染趋势也非常有意义。文章以江苏省泰兴市为研究对象,将吸附与解吸、颗粒薄膜扩散、分配作用、稀释作用4种固液界面反应和非饱和带、饱和带的特性结合,推导出将非饱和带与饱和带联系在一起的固液界面传质模型。使用Matlab模拟模型参数改变时,地下水中污染物浓度的变化。结果表明,该模型是可行的,但是污染场地、污染物种类可能会对模型模拟结果造成影响。

关键词：固液界面传质模型非饱和带饱和带模型参数

艾条灸护理对输尿管结石术后留置双J管并发症的影响

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现代养生 2024年第11期24卷 827-829页

作者：卜兴霞刘永君王君如陈琪安徽中医药大学附属滁州中西医结合医院泌尿外科

目的探讨艾条灸护理对输尿管结石术后留置双J管并发症的影响。方法选取2023年2月-2024年2月医院收治的输尿管结石患者60例作为研究对象，根据组间基线资料均衡可比原则分为对照组和观察组，每组各30例。两组均行经尿道输尿管结石钬激... 详细信息

目的探讨艾条灸护理对输尿管结石术后留置双J管并发症的影响。方法选取2023年2月-2024年2月医院收治的输尿管结石患者60例作为研究对象，根据组间基线资料均衡可比原则分为对照组和观察组，每组各30例。两组均行经尿道输尿管结石钬激光碎石取石术，对照组给予常规护理，观察组在对照组基础上加用艾条灸护理，比较两组患者护理干预前及术后第1、3、5天患者的VAS评分，中医证候积分。结果护理干预前，两组患者视觉模拟疼痛评分（VAS）差异无统计学意义（P>0.05）；护理干预后，两组患者VAS评分均下降，但观察组患者术后第1天评分高于对照组，差异无统计学意义（P>0.05），而术后第3、5天的VAS评分均低于对照组，差异均有统计学意义（P0.05）；干预后，两组患者中医证候积分均下降，但观察组患者术后1、3、5天的中医证候积分均低于对照组，差异均有统计学意义（P<0.05）。结论艾条灸护理可以改善输尿管结石术后患者的并发症，降低中医证候积分，减轻患者术后疼痛程度。

关键词：输尿管结石术后艾条灸护理

牛冠状病毒TaqMan荧光定量PCR检测方法的建立及应用

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动物医学进展 2024年第2期45卷 7-10页

作者：蒲鹏李晨露张琪吴发兴许信刚西北农林科技大学动物医学院陕西杨凌712100 中国动物卫生与流行病学中心山东青岛266032

为建立牛冠状病毒TaqMan荧光定量PCR检测方法,根据GenBank收录的牛冠状病毒AKS-01株N基因序列(KU886219)保守区设计特异性引物和探针,构建重组质粒并进行反应条件优化、特异性试验、重复性试验以及敏感性试验,建立一种检测BCoV的TaqMan... 详细信息

为建立牛冠状病毒TaqMan荧光定量PCR检测方法,根据GenBank收录的牛冠状病毒AKS-01株N基因序列(KU886219)保守区设计特异性引物和探针,构建重组质粒并进行反应条件优化、特异性试验、重复性试验以及敏感性试验,建立一种检测BCoV的TaqMan荧光定量PCR方法。结果显示,建立的牛冠状病毒TaqMan荧光定量PCR检测方法特异性、敏感性和重复性均良好。该方法BCoV重组质粒标准品在5.75×10^(7)~5.75×10^(3)copies/μL时与Ct值呈现良好线性关系,该方法对牛轮状病毒、牛传染性鼻气管炎病毒、牛病毒性腹泻病毒、牛副流感病毒3型均无交叉反应,特异性良好;该方法对BCoV重组质粒标准品最低检测限为5.75×10^(1)copies/μL;批内和批间重复性试验结果稳定,变异系数均小于2%。利用所建立的TaqMan荧光定量PCR方法对收集的132份样品进行检测,与常规PCR相比,两者符合率为96.21%,可为BCoV的临床检测和流行病学调查提供技术支持。

关键词：牛冠状病毒 TaqMan荧光定量PCR 检测方法

A Preliminary Study on Silver Isotopic Composition in Polymetallic Ore Deposits in Eastern China

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Journal of Earth Science 2022年第1期33卷 100-108页

作者： Ge Dong Hai-Zhen Wei Yuanfeng Zhu Xi Liu qi Guo Wei pu Yibo Lin Junlin wang State Key Laboratory for Mineral Deposits Research Department of Earth Sciences and EngineeringNanjing University CAS Center for Excellence in Comparative Planetology

A preliminary survey of silver isotopic composition in four polymetallic ores in eastern China shows a larger variation inδ^(109)Ag from-0.014‰to+0.983‰,which is within the total ranges for the entire respective ore deposit types *** diversity of silver isotopic compositions in oredeposits reported here and previous studies seemed to preclude simple isotopic links to particular sources,but reflected the silver isotope fractionation in transport-and deposit-related processes ***δ^(109)Ag values in supergene samples from the qixiashan Pb-Zn-Ag polymetallic deposit are more positive,in consistent with the statistical δ^(109)Ag distribution from-0.4‰to+2.2‰in 36 pieces of supergene ore samples around the World,which reflects the diverse controls on silver isotope fractionation from the first-order thermodynamic effect,reduction-mediated reaction,remobilization of silver with surficial low-temperature weathering *** hypogene samples in Dazhuangzi orogenic Au-Ag ore deposit,have δ^(109)Ag values close to 0,which implies that equilibrium partitioning associated with metal sources at the high-temperature does not result in a resolvable difference in silver isotopic *** contrast,the hypogene samples which are dominated by pyrite without visible silver minerals (i.e.,skarn iron ore deposit in Edongnan) have shown the largest variation range of δ^(109)Ag,followed by that from the porphyry copper ore in *** could be concluded that the surface adsorption and/or lattice substitution are important factors to control Ag isotope fractionation in oreforming processes,especially for skarn deposits with only *** perspective of silver isotope shows great potentials to understand the processes that lead to the concentrations of metals to economic levels and to constrain the physicochemical conditions during ore-mineralization in metallic ore-deposits.

关键词： silver isotopic composition hypogene ore deposits supergene ore deposits metal transport ore deposits

黄土高原退牧还草工程实施成效认知评价——以甘肃省环县为例

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草原与草坪 2024年第4期44卷 226-234页

作者：蒲强胜孙小妹蒲小鹏侯齐琪刘倩倩苏军虎甘肃农业大学草业学院草业生态系统教育部重点实验室甘肃省草业工程实验室中-美草地畜牧业可持续发展研究中心甘肃兰州730070 甘肃农业大学‒新西兰梅西大学草地生物多样性研究中心甘肃兰州730070 甘肃省祁连山草原生态系统野外科学观测研究站甘肃天祝733200 甘肃农业大学资源与环境学院甘肃兰州730070

【目的】全面评估退牧还草工程实施以来黄土高原区域所取成效与面临问题,优化后续工程的实施。【方法】以黄土高原区的甘肃省环县为例,开展退牧还草工程实施成效认知评价。通过实地考察、入户调查和访问座谈,结合管理部门、实施对象的... 详细信息

【目的】全面评估退牧还草工程实施以来黄土高原区域所取成效与面临问题,优化后续工程的实施。【方法】以黄土高原区的甘肃省环县为例,开展退牧还草工程实施成效认知评价。通过实地考察、入户调查和访问座谈,结合管理部门、实施对象的意见和建议,从退牧还草工程特点出发,构建基于层次分析(AHP)-模糊综合评价法的评估模型,对实施成效认知进行了评估。【结果】黄土高原区退牧还草项目农牧民认可度高,实施成效综合得分75.94,处于中等偏上水平,在生态修复方面取得了较好成就,对当地经济建设起到了促进作用。【结论】建议后期工程实施中加大对实施必要性的宣传,让生态保护观念更深入人心,结合社会变迁的情况,辅以科技支撑、产业结构调整、政策导向等方式,促进新时期黄土高原类似地区的生态建设与高质量发展。

关键词：退牧还草政策评估 AHP-模糊综合评价法黄土高原

Developing a new model system for potato genetics by androgenesis

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Journal of Integrative Plant Biology 2021年第4期63卷 628-633页

作者： Miru Du Ting wang Qun Lian Xiaojie Zhang Guohui Xin Yuanyuan pu Glenn JBryan Jianjian qi Inner Mongolia Potato Engineering and Technology Research Center Inner Mongolia UniversityHohhot 010021China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China Cell and Molecular Sciences The James Hutton InstituteInvergowrieDundee DD25DAUK

High heterozygosity and tetrasomic inheritance complicate studies of asexually propagated polyploids,such as *** genetics approaches,especially mutant library construction,can be an ideal choice if a proper mutagenesis genotype is ***,we aimed to generate a model system for potato research using anther cultures of Solanum verrucosum,a self-compatible diploid potato with strong late blight *** of the 23 regenerants obtained(SVA4,SVA7,SVA22,SVA23,SVA32,and SVA33)were diploids,and their homozygosity was estimated to be>99.99%with 22 polymorphic In Del *** lines-SVA4 and SVA32-had reduced stature(plant height≤80 cm),high seed yield(>1,000 seeds/plant),and good tuber set(>30 tubers/plant).We further confirmed the full homozygosity of SVA4 and SVA32 using wholegenome *** two regenerants possess all the characteristics of a model plant:diploidy,100%homozygosity,self-compatibility,and amenability to ***,we have successfully generated two lines,SVA4 and SVA32,which can potentially be used for mutagenesis and as model plants to rejuvenate current methods of conducting potato research.

关键词： diploid potato homozygous model system self-compatible Solanum verrucosum

NDUFA8 potentially rescues Wolbachia-induced cytoplasmic incompatibility in Laodelphax striatellus

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Insect Science 2023年第6期30卷 1689-1700页

作者： Jie Chen Meng-Ke wang qi-Xian Xie Xiao-Li Bing Tong-pu Li Xiao-Yue Hong Department of Entomology Nanjing Agricultural UniversityNanjingChina

The endosymbiont Wolbachia manipulates host reproduction by several strategies, one of the most important of which is cytoplasmic incompatibility (CI). CI can be rescued when Wolbachia-infected males mate with females infected with the same Wolbachia strain. However, the potential rescue mechanism of CI in the small brown planthopper Laodelphax striatellus is unclear. In this study, comparative transcriptome analysis was applied to explore the effect of Wolbachia on L. striatellus eggs. A total of 1387 differentially expressed genes were identified. RNA interference of 7 Wolbachia-upregulated key planthopper genes reduced egg reproduction, suggesting that Wolbachia might improve fecundity in L. striatellus by affecting these 7 genes. Suppressing the expression of another upregulated gene, NDUFA8 (encoding NADH dehydrogenase [ubiquinone] 1 α subcomplex subunit 8-like) by RNA interference significantly increased the mortality of early embryos without affecting the number of deposited eggs. Wolbachia infection upregulated the mRNA level of NDUFA8, and dsNDUFA8 treatment of Wolbachia-infected females recreated CI-like symptoms, suggesting that NDUFA8 is associated with the rescue phenotype. Because all L. striatellus populations worldwide are infected with Wolbachia, NDUFA8 is a potential pest control target.

关键词： cytoplasmic incompatibility Laodelphax striatellus NDUFA8 reproduc-tion rescue Wolbachia