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鄂尔多斯盆地马家沟组中-下组合岩相古地理演化及储层分布规律

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地质科学 2024年第3期59卷 625-636页

作者：牛小兵吴东旭刘新社任军峰李程善周进高于洲李维岭王龙中国石油长庆油田公司西安710018 低渗透油气田勘探开发国家工程实验室西安710018 中国石油杭州地质研究院杭州310023 国家能源碳酸盐岩油气重点实验室杭州310023 中国石油集团碳酸盐岩储层重点实验室杭州310023

岩相古地理研究是储层刻画和油气勘探的基础。前期对鄂尔多斯盆地碳酸盐岩岩相古地理的认识成果,有效指导了奥陶系马家沟组顶部的风化壳储层勘探,已探明近万亿方储量规模。然而,限于资料和认识程度,原来的储层分布图无法满足日益深入的... 详细信息

岩相古地理研究是储层刻画和油气勘探的基础。前期对鄂尔多斯盆地碳酸盐岩岩相古地理的认识成果,有效指导了奥陶系马家沟组顶部的风化壳储层勘探,已探明近万亿方储量规模。然而,限于资料和认识程度,原来的储层分布图无法满足日益深入的天然气勘探工作需求。因此,笔者基于最新的地质基础资料,综合运用岩相古地理分析和储层预测技术,通过编制马家沟组中-下组合重点层段的沉积相图和储层分布图,明确了中-下组合有利储层发育的主控因素和分布规律。研究表明:1)马家沟组中-下组合主要发育蒸发台地、局限台地和台地边缘3大相类型,以及8种亚相和16种微相;其中台内颗粒滩、微生物丘、台缘颗粒滩、含膏云坪是储层发育的有利微相。2)中-下组合白云岩储层微观储集空间主要有粒间孔、晶间孔、溶蚀孔、微裂缝等,主要受控于丘滩和膏云坪沉积、准同生溶蚀作用和后期充填作用3种因素。3)马二段、马四段、马五9亚段、马五7亚段以丘滩相的粒间孔和晶间孔储层为主,马三段、马五6亚段以膏云坪的溶蚀孔储层为主。结论认为,中-下组合储层类型多样、层系多、厚度大,是下一步天然气勘探的重点层系。

关键词：储层分布沉积微相岩相古地理中-下组合马家沟组鄂尔多斯盆地

克拉通盆地不同级次构造—岩相古地理编图思路与实践:以鄂尔多斯盆地早古生代为例

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地质科学 2024年第3期59卷 603-611页

作者：牛小兵李程善范立勇肖庆付斯一任军锋张成弓苏中堂低渗透油气田勘探开发国家工程实验室西安710018 中国石油长庆油田公司勘探开发研究院西安710018 成都理工大学油气藏地质及开发工程国家重点实验室成都610059 成都理工大学沉积地质研究院成都610059

构造—沉积分异思想在地球内部构造地质作用与地球表面沉积响应间建立起了有机联系,可划分为不同序次系统,体现了地球系统思维。以该思想为指导编制了鄂尔多斯盆地早古生代构造—岩相古地理图。盆—山系统级次编图主要体现了不同构造—... 详细信息

构造—沉积分异思想在地球内部构造地质作用与地球表面沉积响应间建立起了有机联系,可划分为不同序次系统,体现了地球系统思维。以该思想为指导编制了鄂尔多斯盆地早古生代构造—岩相古地理图。盆—山系统级次编图主要体现了不同构造—沉积分异作用对古地理面貌的控制,揭示了古地理演化的动力学机制,反映了不同时期地球深部活动在地表系统的响应;隆—坳系统级次编图揭示出海平面波动过程中不同构造单元沉积环境及充填沉积物的差异;凸—凹系统级次编图清晰展现出东部坳陷内古地貌差异引起的沉积环境分异及生、储、盖物质的分布规律与组合关系。不同级次的构造—岩相古地理图更好地解释了古地理面貌“所以然”的原因,更清晰地揭示了油气成藏物质空间分布规律及其控制因素,从而能更有效指导油气勘探实践。

关键词：构造—沉积分异作用微相同沉积断裂怀远运动马家沟组

Online identification and extraction method of regional large-scale adjustable load-aggregation characteristics

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Global Energy Interconnection 2024年第3期7卷 313-323页

作者： Siwei li liang Yue Xiangyu Kong chengshan Wang Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin 300072P.R.China Beijing Fibrlink Communications Co. Ltd.Beijing 100071P.R.China

This article introduces the concept of load aggregation,which involves a comprehensive analysis of loads to acquire their external characteristics for the purpose of modeling and analyzing power *** online identification method is a computer-involved approach for data collection,processing,and system identification,commonly used for adaptive control and *** paper proposes a method for dynamically aggregating large-scale adjustable loads to support high proportions of new energy integration,aiming to study the aggregation characteristics of regional large-scale adjustable loads using online identification techniques and feature extraction *** experiment selected 300 central air conditioners as the research subject and analyzed their regulation characteristics,economic efficiency,and *** experimental results show that as the adjustment time of the air conditioner increases from 5 minutes to 35 minutes,the stable adjustment quantity during the adjustment period decreases from 28.46 to 3.57,indicating that air conditioning loads can be controlled over a long period and have better adjustment effects in the short ***,the experimental results of this paper demonstrate that analyzing the aggregation characteristics of regional large-scale adjustable loads using online identification techniques and feature extraction algorithms is effective.

关键词： Load aggregation Regional large-scale Online recognition Feature extraction method

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洛阳市豫西脂尾羊种质资源现状及保护建议

中国畜禽种业 2024年第7期20卷 26-31页

作者：智利红吴靖章周芬娜李成山江燕洛阳市农业技术推广服务中心河南洛阳471000 嵩县动物疫病预防控制中心河南洛阳471000

豫西脂尾羊是河南省优良的地方品种,具有适应性强、耐粗饲、抗病力强等优点,2020年被录入国家畜禽遗传资源品种名录,洛阳市是其核心产区之一。该文对豫西脂尾羊的种质特性及资源现状进行了介绍,分析了当前资源保护中存在的缺乏保种意识... 详细信息

豫西脂尾羊是河南省优良的地方品种,具有适应性强、耐粗饲、抗病力强等优点,2020年被录入国家畜禽遗传资源品种名录,洛阳市是其核心产区之一。该文对豫西脂尾羊的种质特性及资源现状进行了介绍,分析了当前资源保护中存在的缺乏保种意识、饲养管理粗放、疫病防控不到位、资源保护体系不健全等问题,提出了增强保护意识、规范饲养管理水平、加大种质资源保护力度、健全资源保护体系等相关建议,以期为豫西脂尾羊种质资源的保护和利用提供思路。

关键词：豫西脂尾羊种质资源保护洛阳市

Phase evolution mechanism study and fabrication of PbMo_(6)S_(8) superconducting materials with two-step sintering process

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Superconductivity 2023年第1期5卷 40-45页

作者： Botao Shao lingfeng ling Shengnan Zhang Jixing liu Lei Zhi Jianqing Feng chengshan li Jianfeng li Pingxiang Zhang Superconducting Materials Research Center Northwest Institute for Nonferrous Metal ResearchXi’an 710016China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

PbMo6S 8 superconducting materials are considered to have great potential for practical applications at low temperatures and high fields due to their high upper critical field,low anisotropy,and low preparation *** this work,PbMo_(6)S_(8) bulks were prepared through a solid‐state sintering process using PbS,Mo,and MoS_(2) as raw *** phase evolution mechanism during the sintering of PbMo_(6)S_(8) was studied in *** was found that during sintering at 750℃ for 24 h,both the S and Pb atoms diffuse into the Mo and MoS_(2) particles,leading to the formation of the PbMo_(6)S_(8) *** sintering at 950℃ for 72 h,a high superconducting phase content was obtained in the bulk;however,numerous pores ***,in order to obtain a higher density for the bulk,a two‐step sintering process was *** on this technique,PbMo_(6)S_(8) bulks with a higher bulk density and a higher superconducting phase content were *** study provides an effective method for the fabrication of high‐quality precursor powders,which can be the foundation for the future fabrication of PbMo_(6)S_(8) superconducting long wires or tapes for practical applications.

关键词： PbMo_(6)S_(8) Superconductors Phase evolution Solid‐state sintering

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糖尿病与泌尿系结石关系的临床真实世界研究

右江医学 2024年第5期52卷 417-422页

作者：李堂潘正故刘敏万光阳凌龙陆长泽陈世伟韦志伟李成山右江民族医学院附属西南医院暨百色市人民医院泌尿外科广西百色533000

目的分析真实世界中糖尿病与泌尿系结石的关系,为泌尿系结石的预防及治疗提供依据。方法收集2015年1月1日至2019年12月31日诊断有糖尿病、泌尿系结石及同期在体检中心常规体检人员的临床资料,分别设为糖尿病组、结石组、对照组(非糖尿... 详细信息

目的分析真实世界中糖尿病与泌尿系结石的关系,为泌尿系结石的预防及治疗提供依据。方法收集2015年1月1日至2019年12月31日诊断有糖尿病、泌尿系结石及同期在体检中心常规体检人员的临床资料,分别设为糖尿病组、结石组、对照组(非糖尿病健康对照组和非结石健康对照组),记录各组的性别、年龄、是否有糖尿病、是否有血脂异常、是否有肾功能异常、是否有泌尿系结石等指标,倾向性评分匹配法匹配基线水平后,比较糖尿病组与非糖尿病健康对照组的结石发生率,结石组与非结石健康对照组的糖尿病发生率,探究临床真实世界中糖尿病与泌尿系结石的关系。结果经过校正组间性别、年龄、血脂水平、肾功能水平的差异后,糖尿病组患者的泌尿系结石发生率高于非糖尿病健康对照组(11.63%VS 5.42%),差异有统计学意义(χ^(2)=163.561,P<0.001);结石组患者的糖尿病发生率高于非结石健康对照组(15.70%VS 11.71%),差异有统计学意义(χ^(2)=40.171,P<0.001)。结论临床真实世界中糖尿病与泌尿系结石发病存在密切的关系,对糖尿病患者的早期有效干预可能有利于泌尿系结石的预防。

关键词：糖尿病泌尿系结石倾向性评分匹配真实世界研究

Effect of cooling rate on evolution of superconducting phases during decomposition and recrystallization of (Bi,Pb)-2223 core in Ag-sheathed tape

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Rare Metals 2006年第Z1期25卷 400-404页

作者： li Jingyong li Jianguo ZHENG Huiling li chengshan LU Yafeng ZHOU lian Advanced Welding Technology Provincial Key Laboratory Jiangsu University of Science and Technology Zhenjiang 212003 China Northwest Institute for Nonferrous Metal Research Xi''an 710016 China Advanced Welding Technology Provincial Key Laboratory Jiangsu University of Science and Technology Zhenjiang 212003 China Northwest Institute for Nonferrous Metal Research Xi''an 710016 China Northwest Institute for Nonferrous Metal Research Xi''an 710016 China Northwest Institute for Nonferrous Metal Research Xi''an 710016 China Northwest Institute for Nonferrous Metal Research Xi''an 710016 China

The reformation of (Bi,Pb)-2223 from the liquid or melt is very important for a melting process of (Bi,Pb)-2223 tape. By combination of quenching experiment with X-ray diffraction (XRD) analysis, the effect of cooling rate on the evolution of three superconducting phases in the (Bi,Pb)-2223 core of Ag-sheathed tape was investigated. The results show that (Bi,Pb)-2223 reformation from the melt seems to experience different routes during slowly cooling at different rates. One is that (Bi,Pb)-2223 phase reformed directly from the melt, and no Bi-2212 participate in this process. The other is that (Bi,Pb)-2223 is converted from the intermediate product, Bi-2212, which formed from the melt during the first cooling stage. Due to the inherent sluggish formation kinetics of (Bi,Pb)-2223 from Bi-2212, only partial (Bi,Pb)-2223 can finally be reformed with the second route.

关键词： (Bi,Pb)-2223/Ag tape cooling rate decomposition and reformation

Construction of neuron specific vector of human antisense noggin gene expression

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Neural Regeneration Research 2010年第15期5卷 1171-1174页

作者： Shengnian Zhou chengshan li Xiansen Wei liqing liu Zhengda Zhang Department of Neurology Qilu Hospital of Shandong University Jinan 250012 Shandong Province China Department of Cadre Medicine China-Japan Friendship Hospital Beijing 100029 China Department of Basic Medicine Shandong University of Traditional Chinese Medicine Jinan 250355 Shandong Province China

Thenoggin gene is present in the central nervous system in embryonic and postnatal mammals, and plays an important role in maintaining nervous system development and physiological function A 0.76-kb sequence of human noggin gene was cloned by polymerase chain reaction with the digestion site of Hind Ill and Xba I on the 5＇ end. The cloned fragment was reversely inserted into pCS2＋[Tal]-GFP plasmid, an neural cell-specific antisense eukaryotic expression vector. The plasmid expresses antisense for human noggin specifically in neurons, which may facilitate understanding of the physiological function of noggin.

关键词： noggin alphal-tubulin expression vector antisense nucleic acids nerve cells neural regeneration

Phase Evolution Study and Optimization of the Heat Treatment Process for High Current Capacity Bi-2223 Tapes

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Journal of Wuhan University of Technology(Materials Science) 2017年第4期32卷 862-865页

作者：白利锋张胜楠 li chengshan HAO Qingbin liU Guoqing ZHANG Pingxiang The state Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi 'an 710072 China Superconducting Materials' Research Center Northwest Institute for Nonferrous Metal Research Xi 'an 710016 China

Powder in tube process（PIT） was adopted for the fabrication of single filament Bi-2223 tapes, and a heat treatment process including the first heat treatment（HT1）, intermediate rolling（IR）, and second heat treatment（HT2） was performed. The phase evolution mechanism and microstructure changes during these heat treatment processes were systematically discussed. The influences of HT1 parameters on the phase evolution process of Bi-2223 tapes were discussed. With the optimized HT1 process, a proper Bi-2223 content of about 90% was achieved. HT2 process was also optimized by adding a post annealing process. An obvious increase of current capacity was obtained due to the enhancement of intergrain connections. Single filament Bi-2223 tapes with the critical current of Ic-90 A were fabricated with the optimized sintering process.

关键词： high temperature superconductor Bi-2223 phase evolution spray drying critical current density