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Theory and practice of unconventional gas exploration in carrier beds: Insight from the breakthrough of new type of shale gas and tight gas in Sichuan Basin, SW China

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Petroleum Exploration and Development 2023年第1期50卷 27-42页

作者： GUO Tonglou XIONG Liang YE Sujuan DONG Xiaoxia wei limin YANG Yingtao Sinopec Southwest Oil&Gas Company Chengdu 610041China

Unconventional gas in the Sichuan Basin mainly includes shale gas and tight *** development of shale gas is mainly concentrated in the Ordovician Wufeng Formation-Silurian Longmaxi Formation,but has not made any significant breakthrough in the Cambrian Qiongzhusi Formation marine shale regardless of exploration efforts for *** commercial development of tight sandstone gas is mainly concentrated in the Jurassic Shaximiao Formation,but has not been realized in the widespread and thick Triassic Xujiahe *** on the geological characteristics of the Qiongzhusi Formation and Xujiahe Formation,the feedback of old wells was ***,combining with the accumulation mechanisms of con-ventional gas and shale gas,as well as the oil/gas shows during drilling,changes in production and pressure during develop-ment,and other characteristics,it was proposed to change the exploration and development strategy from source and reservoir exploration to carrier beds *** the combination of effective source rock,effective carrier beds and effective sand-stone or shale as the exploration target,a model of unconventional gas accumulation and enrichment in carrier beds was *** the guidance of this study,two significant results have been achieved in ***,great breakthrough was made in exploration of the silty shale with low organic matter abundance in the Qiongzhusi Formation,which breaks the traditional approach to prospect shale gas only in organic-rich black shales and realizes a breakthrough in new areas,new layers and new types of shale gas and a transformation of exploration and development of shale gas from single-layer system,Longmaxi For-mation,to multi-layer system in the Sichuan ***,exploration breakthrough and high-efficient development were re-alized for difficult-to-produce tight sandstone gas reserves in the Xujiahe Formation,which helps address the challenges of low production and unstable production of fractu

关键词： Sichuan Basin carrier bed tight gas shale gas silty shale Cambrian Qiongzhusi Formation Triassic Xujiahe Formation

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甘油三酯葡萄糖指数联合肥胖指标与糖尿病视网膜病变的相关性

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临床荟萃 2024年第7期39卷 612-619页

作者：延天美吴亚楠刘月影魏立民河北北方学院研究生学院河北张家口075000 河北医科大学研究生学院河北石家庄050000 河北省人民医院内分泌科河北石家庄050000

目的本研究旨在探讨甘油三酯葡萄糖指数(triglycerides-glucose index,TyG)及TyG联合肥胖指标与2型糖尿病(type 2 diabetes mellitus,T2DM)患者视网膜病变(diabetic retinopathy,DR)的相关性。分析TyG指数及TyG联合肥胖指标对DR的预测价值。方法本研究为回顾性研究,依据纳入标准以及排除标准,共收集了2018年9月至2021年5月于河北省人民医院内分泌科住院治疗的373名T2DM患者资料,依据是否合并DR,将其分为T2DM未合并DR组及合并DR组。收集患者临床资料,计算指标TyG、甘油三酯葡萄糖-腰围指数(triglyceride-glucose-waist circumference index,TyG-WC)、甘油三酯葡萄糖-体重指数(triglyceride-glucose-body mass index,TyG-BMI)、甘油三酯葡萄糖-腰臀比指数(tyG-waist-to-hip ratio,TyG-WHR)、甘油三酯葡萄糖-腰围身高比指数(tyG-waist-to-height ratio,TyG-WHtR)。采用二元Logistic回归分析其危险因素,绘制ROC曲线来评估TyG、TyG-WC、TyG-BMI、TyG-WHR、TyG-WHtR对DR的预测价值。结果①T2DM合并DR组的年龄、糖尿病病程、腰围、WHR、WHtR、甘油三酯、肌酐、尿素氮、空腹血糖、糖化血红蛋白、TyG、TyG-WC、TyG-BMI、TyG-WHR、TyG-WHtR均高于未合并DR组,肾小球滤过率低于未合并DR组。②DR与年龄、糖尿病病程、腰围、WHR、WHtR、甘油三酯、肌酐、尿素氮、空腹血糖、糖化血红蛋白、TyG、TyG-WC、TyG-BMI、TyG-WHR、TyG-WHtR呈正相关,与肾小球滤过率呈负相关。③TyG、TyG-WC、TyG-BMI、TyG-WHR、TyG-WHtR均是DR的独立危险因素。④ROC分析显示,TyG、TyG-WC、TyG-BMI、TyG-WHR、TyG-WHtR均对DR有预测价值,且TyG-WHR的AUC(0.623)最大。结论TyG-WHR与DR密切相关,有望成为早期识别DR风险的一种新的临床有效标志物。

关键词：糖尿病,2型糖尿病视网膜病变甘油三酯葡萄糖乘积腰臀比肥胖指标

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Ferric ion-triggered surface oxidation of galena for efficient chalcopyrite-galena separation

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 261-267页

作者： Qiancheng Zhang limin Zhang Feng Jiang Honghu Tang Li Wang wei Sun School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Changsha 410083China School of Resource and Environment Hunan University of Technology and BusinessChangsha 410083China

The efficient separation of chalcopyrite(CuFeS2)and galena(PbS)is essential for optimal resource ***,find-ing a selective depressant that is environmentally friendly and cost effective remains a *** various techniques,such as mi-croflotation tests,Fourier transform infrared spectroscopy,scanning electron microscopy(SEM)observation,X-ray photoelectron spec-troscopy(XPS),and Raman spectroscopy measurements,this study explored the use of ferric ions(Fe^(3+))as a selective depressant for *** results of flotation tests revealed the impressive selective inhibition capabilities of Fe^(3+)when used *** analysis showed that Fe^(3+)significantly reduced the adsorption of isopropyl ethyl thionocarbamate(IPETC)on the galena surface while having a minimal impact on *** analysis using SEM,XPS,and Raman spectra revealed that Fe^(3+)can oxidize lead sulfide to form compact lead sulfate nanoparticles on the galena surface,effectively depressing IPETC adsorption and increasing surface *** findings provide a promising solution for the efficient and environmentally responsible separation of chalcopyrite and galena.

关键词： galena chalcopyrite ferric ions flotation separation surface oxidation

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Atomistic mechanism of high ionic conductivity in lithium ytterbium-based halide solid electrolytes:A first-principles study

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Journal of Rare Earths 2024年第1期42卷 155-162,I0006页

作者： limin Wang wei Xiao Lu Sun Rong Yang Jinqiu Yu Ligen Wang State Key Laboratory of Nonferrous Metals and Processes China GRINM Group Co.Ltd.Beijing100088China GRIMAT Engineering Institute Co. Ltd.Beijing101407China General Research Institute for Nonferrous Metals Beijing100088China China Automotive Battery Research Institute Co. Ltd.Beijing101407China Rare Earth Functional Materials(Xiong'an)Innovation Center Co. Ltd.Xiong'an071700China

As the next generation of commercial automotive power batteries begins replacing liquid lithium batteries,many look towards all-solid-state batteries to pioneer the ***-so lid-state batteries have attracted the attention of countless researchers around the world because of their high safety and high energy *** recent times,halide solid-state electrolytes have become a research hotspot within solid-state electrolytes because of their potentially superior *** this paper,in the framework of DFT,we investigated the atomic mechanisms of improving the ionic conductivity and stability of Li_(3)YbCl_(6).Our calculations show that both trigonal and orthorhombic Li_(3)YbCl_(6) exhibit wide electrochemical windows and metastable properties(100 meV/atom>Ehull>0 meV/atom).However,the orthorhombic Li_(3)YbCl_(6) can be stabilized at high temperatures by taking the vibrational entropy into account,which is supported by the experimental ***,it is expected that because of the Yb/Li synergistic interactions that,due to their strong mutual coulomb repulsion,influence the Li^(+)transport behavior,the orthorhombic Li_(3)YbCl_(6) might have superior ionic conductivities with appropriate Li+migration paths determined by the Yb^(3+) ***,higher ionic conductivities can be obtained by regulating the random distribution of Li^(+) *** Li^(+)-deficiency can also largely increase the ionic conductivity by invoking *** study helps gain a deeper understanding of the laws that govern ionic conductivities and stabilities and provides a certain theoretical reference for the experimental development and design of halide solid-state electrolytes.

关键词： Halide solid-state electrolytes Phase stability Ionic conductivity First-principles calculations Rare earths

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巴戟天多糖对文昌鸡生长性能、血清免疫和抗氧化指标及免疫器官发育的影响

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中国畜牧兽医 2024年第9期51卷 3847-3856页

作者：吴蔚孙瑞萍刘杰刘圈炜刘宇航张艳欧阳坤赵桂苹张旭丽王秀萍魏立民张浩洁广西大学动物科学技术学院南宁530004 海南省农业科学院三亚研究院(海南省实验动物研究中心) 三亚572025 海南省农业科学院畜牧兽医研究所海南省热带动物繁育与疫病研究重点实验室海口571100 海南(潭牛)文昌鸡股份有限公司农业农村部文昌鸡育种与养殖重点实验室571133 广东生态工程职业学院广州510000

【目的】本试验通过研究饲粮中添加巴戟天多糖(Morinda officinalis polysaccharide,MOP)对文昌鸡生长性能、血清免疫和抗氧化指标及免疫器官发育的影响,旨在为MOP在肉鸡生产中得到深入应用提供参考依据。【方法】选取6日龄体重相近、... 详细信息

【目的】本试验通过研究饲粮中添加巴戟天多糖(Morinda officinalis polysaccharide,MOP)对文昌鸡生长性能、血清免疫和抗氧化指标及免疫器官发育的影响,旨在为MOP在肉鸡生产中得到深入应用提供参考依据。【方法】选取6日龄体重相近、健康的雌性文昌鸡600只,随机分为5组,每组8个重复,每个重复15只鸡,对照组鸡饲喂基础饲粮,试验组鸡分别在基础饲粮中添加250、500、1000和2000 mg/kg的MOP,试验期40 d。在试验第1、40天分别称重,试验期间以重复为单位记录采食量和剩料量,计算平均日增重(ADG)、平均日采食量(ADFI)和料重比(F/G);在试验第40天每重复选取1只试验鸡采血,屠宰后采集胸腺、脾脏、法氏囊并称重,测定血清生化指标、抗氧化指标和免疫指标,并测定免疫器官指数。【结果】与对照组相比,①饲粮中添加不同水平的MOP对文昌鸡的终末体重、ADG和ADFI无显著影响(P>0.05),但250 mg/kg MOP组的F/G显著提高(P0.05)。②250 mg/kg MOP组文昌鸡血清免疫球蛋白G(IgG)含量、500 mg/kg MOP组血清IgM含量均显著提高(P<0.05);500和1000 mg/kg MOP组血清丙二醛(MDA)含量显著降低(P<0.05);2000 mg/kg MOP组血清谷胱甘肽过氧化物酶(GSH-Px)活性显著提高(P<0.05)。③500、1000和2000 mg/kg MOP组文昌鸡法氏囊指数均显著提高(P<0.05)。【结论】饲粮中添加250及500 mg/kg MOP可提高文昌鸡血清免疫球蛋白含量,添加500、1000和2000 mg/kg MOP可改善文昌鸡血清抗氧化指标,促进免疫器官法氏囊的生长发育。本试验中,MOP添加量以500 mg/kg为宜。

关键词：巴戟天多糖文昌鸡生长性能免疫抗氧化

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Clinical Study on Simultaneous Modulated Accelerated Radiotherapy and Concurrent Chemotherapy for Locally Advanced Nasopharyngeal Carcinoma

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Clinical oncology and cancer researeh 2009年第5期6卷 354-358页

作者： Haiqun Lin Baosheng Li Zicheng Zhang Yumei wei limin Zhai Department of Radiotherapy Shandong Cancer Hospital Jinan 250117 Shandong Province. China.

OBJECTIVE To evaluate the clinical efficacy and toxicities of simultaneous modulated accelerated radiotherapy （SMART） and concurrent chemotherapy for locally advanced nasopharyngeal carcinoma. METHODS Eightyseven patients with nasopharyngeal carcinoma received SMART from April 2002 to September 2006. According to the UICC staging system, 30 patients were diagnosed as stage IIb, 42 patients stage III, 13 patients stage IVa and 2 patients stage IVb. The intensitymodulated radiotherapy was delivered with the ＂step and shoot＂ SMART technique with the prescribed dose of 66-76 Gy （2.2-2.4 Gy/day） to the gross tumor volume （GTV） and positive neck lymph nodes （GTVLN）, with 60 Gy （2.0 Gy/day） to the highrisk clinical target volume （CTV1）, encompassing the area around the nasopharynx and the upper neck, and with 54 Gy （1.8 Gy/day） to the lowrisk clinical target volume （CTV2）, including the lower neck and supraclavicular area. Among all the patients, 31 received 2 cycles of SMART concurrently with 5 fluorouracil （5-Fu） and cisplatin （the FP group） and 56 received 2 cycles of concurrent cisplatin. All the patients received 3 to 4 cycles of adjuvant combination chemotherapy of cisplatin and 5fluorouracil starting from the 1st month after completion of SMART. RESULTS With a median follow up of 59 months （ranging from 19 to 85 months）, the 1, 2 and 3year overall survival rates were 100%, 94.6% and 91.3% respectively. Acute mucositis and pharyngitis were more frequently observed in the FP group than in the cisplatin group. CONCLUSION SMART technique provides an excellent opportunity to spare normal tissue and is probably more biologically effective. Combination of single cisplatin was more tolerable.

关键词： simultaneous modulated accelerated radiotherapy (SMART) intensitymodulated radiotherapy nasopharyngeal carcinoma concurrent chemoradiotherapy.

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生物友好矿粉基免烧陶粒制备及性能研究

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非金属矿 2024年第1期47卷 10-13页

作者：秦文彬王琴俞佳成韦丽敏李志涛张宇峰南京工业大学环境科学与工程学院江苏南京211800 江苏省宜裕环保科技有限公司江苏无锡214200

为提高生物亲和性矿粉在陶粒制备过程中的多元化应用,为水处理技术和过滤介质的改进提供参考和指导,本研究采用石英砂、沸石粉和火山石制备免烧陶粒,通过单因素分析确定初始原材料配比。结果表明,3种陶粒性能相近,但石英砂陶粒成本更低... 详细信息

为提高生物亲和性矿粉在陶粒制备过程中的多元化应用,为水处理技术和过滤介质的改进提供参考和指导,本研究采用石英砂、沸石粉和火山石制备免烧陶粒,通过单因素分析确定初始原材料配比。结果表明,3种陶粒性能相近,但石英砂陶粒成本更低。采用响应面法分析得出,当石英砂、低碱水泥、硅灰粉和木质纤维质量比为64∶36∶21∶6时,石英砂陶粒性能最优,含泥量为0.62%,空隙率为41.32%,磨损率为0.16%,筒压强度为3.52 MPa,比表面积为12.01 m^(2)/g。

关键词：人工陶粒滤料含泥量磨损率空隙率生物友好性

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软土参数反分析方法及其在沉降预测中的应用

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中国铁道科学 2007年第4期28卷 1-6页

作者：魏丽敏何群王永和中南大学土木建筑学院湖南长沙410075

沉降预测与控制是当前客运专线设计、施工组织的关键技术,为保证沉降预测的准确程度,必须合理选取计算参数。采用黏弹塑(西原)模型模拟土骨架,并结合软土变形的大位移、大应变及渗透固结的特点,建立模拟施工过程的软土路基双重非线性固... 详细信息

沉降预测与控制是当前客运专线设计、施工组织的关键技术,为保证沉降预测的准确程度,必须合理选取计算参数。采用黏弹塑(西原)模型模拟土骨架,并结合软土变形的大位移、大应变及渗透固结的特点,建立模拟施工过程的软土路基双重非线性固结分析有限元模型。以实测信息与计算信息的相对残差平方和最小为目标,引入考虑测点观测精度的加权值,建立根据多种测试信息进行参数反分析的目标函数,并采用Monte-Carlo法和可变容差法相结合的优化技术,对目标函数进行约束优化,较好地解决了可变容差法易于陷入局部最优解的难题。通过参数分组、初步试算、综合调整等步骤,建立了分阶段多层次动态施工反分析方法,从而使反分析所得计算参数具有明确的物理意义。实际工程应用表明,参数反分析方法本构关系清楚、物理意义明确,所得计算参数能较好地反映现场的实际情况,可准确预测沉降。

关键词：软土路基参数分析反分析方法黏弹塑模型可变容差法沉降预测

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联络线安全控制策略表的构思与实现

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电网技术 1999年第8期23卷 74-75页

作者：魏立民肖利民王勇河北电力调度通信局

结合网间联络线房高线（房山—高碑店）安全控制系统的研制，简要介绍该系统的设计思想和构成，阐述了安全控制策略表的构思与实现，指出了本方案与常规策略表的不同及其优点。

关键词：电网联络线安全控制策略表过负荷调度

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Effect of Pelleted Total Mixed Ration on Production Performance and Serum Biochemical Index of Growing Hainan Black Goats

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Animal Husbandry and Feed Science 2019年第1期11卷 19-22,31页

作者： Liu Quanwei Wang Feng wei limin Huang Lili Sun Ruiping Xing Manping Zheng Xinli Institute of Animal Science and Veterinary Medicine Hainan Academy of Agricultural Sciences Haikou 571100 China Hainan Key Lab of Tropical Animal Reproduction Breeding and Epidemic Disease Research Haikou 571100 China

[Objective] The paper was to investigate effects of pelleted total mixed ration on production performance and serum biochemical index of growing Hainan black goats.[Method] Twenty-four growing Hainan black goats with the same genetic backgrounds and similar initial weight of(10.05±0.049) kg were randomly assigned into two treatments, and supplied with Juncao + concentrate(control group), pelleted total mixed ration(experimental group), respectively. The trial lasted 50 d.[Result] The final weight, daily gain and feed intake of experimental group were significantly higher than those of control group(P<0.05), but the feed/gain ratio of experimental group was markedly lower than that of control group(P<0.05). Compared with the control group, the gross profit of experimental group significantly increased( P <0.05).[Conclusion] Pelleted total mixed ration led to better production performance of growing Hainan black goat.

关键词： Growing Hainan black goat Pelleted total mixed ration Production performance Serum biochemical parameters

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