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Application of fuzzy comprehensive evaluation method to assess effect of conformance control treatments on water-injection wells

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Petroleum 2024年第1期10卷 165-174页

作者： Hu Jia Pengwu Li wei Lv Jianke Ren Chen Cheng Rui Zhang Zhengjun Zhou yanbin Liang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengduChina Oil and Gas Technology Research Institute PetroChina Changqing Oilfield CompanyXi'anChina Oil Production Technology Institute of PetroChina Dagang Oilfield Company TianjinChina

As an effective method to prolong the life of mature field,conformance control in water-injection well has been used ***,effect evaluation of conformance control has attracted great attention because it is an important guideline for the design of later enhanced oil recovery(EOR)***,production responses such as excessive water reduction and oil production increment are widely used as the ***,production responses may be unreliable due to the difficulty in determining an effective injection well which is caused by a large number of treated water-injection wells in a well ***,with the application of fuzzy comprehension evaluation(FCE),five evaluation indexes(injection pressure,injectivity index,slope of hall curve,variation coefficient and homogenization coefficient of injection profile)describe injection responses were selected to establish a new evaluation method in this *** on fuzzy mathematics,FCE reflects the difference of evaluation ***,weights of evaluation indexes were obtained by analytic hierarchy process(AHP),which made the results more *** Bai 239 oilfield as an example,the five injection responses indexes were used to assess treatment effect on five water-injection wells by single index evaluation and *** results showed that among the five evaluation indexes mentioned above,the slope of hall curve was the most important factor affected evaluation *** single index evaluation,opposite results may be produced easily on account of the one-sidedness of single index or human ***,we found that effective treatment was a relative concept *** result of FCE was consistent with single index evaluation but FCE was more *** study suggests that FCE could be applied to another field such as water flooding,acidizing and hydraulic fracturing.

关键词： Enhanced oil recovery Injection responses Fuzzy mathematics Analytic hierarchy process Effect evaluation

Stable Lithium-Carbon Composite Enabled by Dual-Salt Additives

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Nano-Micro Letters 2021年第7期13卷 127-137页

作者： Lei Zheng Feng Guo Tuo Kang Yingzhu Fan wei Gu Yayun Mao Ya Liu Rong Huang Zhiyun Li yanbin Shen wei Lu Liwei Chen School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026People’s Republic of China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of ScienceSuzhou 215123People’s Republic of China Vacuum Interconnected Nanotech Workstation(Nano-X) Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Science(CAS)Suzhou 215123People’s Republic of China in-Situ Center for Physical Science School of Chemistry and Chemical EngineeringShanghai Jiaotong UniversityShanghai 200240People’s Republic of China

Lithium metal is regarded as the ultimate negative electrode material for secondary batteries due to its high energy ***,it suffers from poor cycling stability because of its high reactivity with liquid ***,continuous efforts have been put into improving the cycling Coulombic efficiency(CE)to extend the lifespan of the lithium metal negative ***,we report that using dual-salt additives of LiPF_(6) and LiNO_(3) in an ether solvent-based electrolyte can significantly improve the cycling stability and rate capability of a Li-carbon(Li-CNT)*** a result,an average cycling CE as high as 99.30% was obtained for the Li-CNT at a current density of 2.5 mA cm^(-2) and an negative electrode to positive electrode capacity(N/P)ratio of *** cycling stability and rate capability enhancement of the Li-CNT negative electrode could be attributed to the formation of a better solid electrolyte interphase layer that contains both inorganic components and organic *** former component mainly originates from the decomposition of the LiNO_(3) additive,while the latter comes from the LiPF_(6)-induced ring-opening polymerization of the ether *** novel surface chemistry significantly improves the CE of Li negative electrode,revealing its importance for the practical application of lithium metal batteries.

关键词： Lithium metal battery Coulombic efficiency Dual-salt additives Li-CNT Solid electrolyte interphase

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煤裂解制取化学品的研究进展

化工时刊 2008年第1期22卷 58-60页

作者：丁明洁陈新华宗营周磊郑宇宣黄跃国位艳宾宗志敏魏贤勇中国矿业大学化学化工学院江苏徐州221008 漯河职业技术学院轻工系河南漯河462002

煤裂解制取高附加值化学品是煤炭利用的一个新课题。围绕着如何提高总挥发性馏分和某些特定组分产率的核心,从煤的裂解技术、预处理煤的裂解、煤与其它物质的共裂解以及裂解反应器等方面综述了煤裂解技术的研究新进展,讨论了存在的问题... 详细信息

煤裂解制取高附加值化学品是煤炭利用的一个新课题。围绕着如何提高总挥发性馏分和某些特定组分产率的核心,从煤的裂解技术、预处理煤的裂解、煤与其它物质的共裂解以及裂解反应器等方面综述了煤裂解技术的研究新进展,讨论了存在的问题和今后的研究方向。

关键词：煤裂解技术高附加值化学品煤炭利用裂解技术

疟疾患者血浆IgG N-糖基化水平异常修饰的病例对照研究

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中国病原生物学杂志 2023年第11期18卷 1291-1295页

作者：李曰进许艳卢新霞刘建成魏艳彬申艳梅王龙江闫歌张本光孔祥礼纪龙王用斌山东第一医科大学(山东省医学科学院) 山东省寄生虫病防治研究所山东济宁272033 山东第一医科大学(山东省医学科学院) 公共卫生与健康管理学院临沂市疾病预防控制中心检验科山东第一医科大学附属消化病医院

目的探索疟疾患者与健康人群血浆中免疫球蛋白G(IgG)N-聚糖表达水平的差异性。方法选择山东省2022年10月-2023年6月确诊的输入性疟疾(排除合并细菌感染)患者27例,健康对照组采用倾向性评分1∶1匹配,最终纳入55例。抽取受检者静脉血,... 详细信息

目的探索疟疾患者与健康人群血浆中免疫球蛋白G(IgG)N-聚糖表达水平的差异性。方法选择山东省2022年10月-2023年6月确诊的输入性疟疾(排除合并细菌感染)患者27例,健康对照组采用倾向性评分1∶1匹配,最终纳入55例。抽取受检者静脉血,肝素抗凝,分离血浆,提取IgG,采用超高液相色谱法检测IgG N-糖基组。组间糖基结构比较采用两独立样本t检验或Mann-Whitney U秩和检验,P<0.05为差异有统计学意义。结果 55例受检者的年龄范围为27(56岁),平均年龄(41.64±8.64)岁。疟疾病例组患者血浆GP4、GP6、GP14、GP17和GP19的聚糖水平均显著高于对照组(P<0.05或P<0.01);GP5、GP8、GP9、GP11、GP13-GP18、GP20、GP21、GP23和GP14的聚糖水平均显著低于对照组(P<0.05或P<0.01)。IgG无半乳糖基化(G0)水平疟疾病例组为(28.42±7.07),健康对照组为22.34±5.54;IgG单半乳糖基化(G1)水平疟疾病例组为25.61±4.08,健康对照组,32.85±2.71,差异有统计学意义(P<0.05);IgG双半乳糖基化(G2)水平疟疾病例组为23.35±4.45,健康对照组为19.93±3.01,差异有统计学意义(P<0.05)。双唾液酸指标S2疟疾病例组为(3.73±0.92),健康对照组为5.72±2.23,差异有统计学意义(P<0.01)。结论疟疾患者血浆IgG单半乳糖基化和唾液酸化明显减少,提示可能与疟疾发病有关。

关键词：血浆 IgG N-聚糖疟疾糖基化

Effectiveness of Liu-zi-jue exercise on coronavirus disease 2019 in the patients: a randomized controlled trial

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Journal of Traditional Chinese Medicine 2022年第6期42卷 997-1005页

作者： ZHU Qingguang ZHANG Shuaipan LI Jingxian SUN Wuquan CHENG wei ZHAN Chao CHENG yanbin FANG Lei FANG Min Department of Tuina Yue yang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China School of Human Kinetics University of OttawaOttawa K1V7P8Canada Department of Tuina Huangshi Hospital of Traditional Chinese MedicineHuangshi cityHubei 435000China School of Acupuncture-Moxibustion and Tuina Shanghai University of Traditional Chinese MedicineShanghai 201203China School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghai 201203China

OBJECTIVE: The aim of this study was to examine the effect of Liu-zi-jue exercise on the respiratory symptoms, quality of life, and mental health of patients with mild coronavirus disease 2019(COVID-19). METHODS: A single-center randomized controlled trial was conducted with 104 patients with mild COVID-19. The patients were randomly assigned to the Liu-zi-jue plus conventional therapy group and conventional therapy group. The outcome measures included Modified Borg Dyspnea Scale(MBDS) score, Patient Health Questionnaire-9(PHQ-9) score, Fatigue Scale-14(FS-14), respiratory symptoms, and vital signs. Data were collected on the first and sixth days of hospitalization and on the discharge day. RESULTS: Repeated-measures ANOVA revealed that the whole scales all showed a downward trend in the two groups(all P < 0.05). The results of single-group effect suggested that the whole scale score in the intervention group was significantly lower than that in the control group at the sixth day of hospitalization. Compared with the control group, only the MBDS, expectoration, and FS-14 scores showed significantly lower scores at the discharge day(P < 0.001, P = 0.011, P = 0.002). Comparison within the group showed that all the variables were significantly different at the three time points with a decreasing trend(P < 0.05), except for the PHQ-9 and expectoration scores(P = 0.331, 0.052). All patients’ vital signs remained within a stable normal range throughout the hospital stay. CONCLUSION: The results suggested that Liu-zi-jue exercise as a complementary and alternative therapy showed beneficial effects on improving the symptoms(shortness of breath, fatigue, and cough), quality of life, and mental health of patients with mild COVID-19.

关键词： COVID-19 Liu-zi-jue exercise respiratory symptom physical and mental health randomized controlled trial

Effects of trace calcium and strontium on microstructure and properties of Cu-Cr alloys

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Journal of Materials Science & Technology 2022年第17期112卷 11-23页

作者： Muzhi Ma Zhu Xiao Xiangpeng Meng Zhou Li Shen Gong Jie Dai Hongyun Jiang yanbin Jiang Qian Lei Haigen wei School of Materials Science and Engineering Central South UniversityChangsha 410083China Key Laboratory of Non-ferrous Metal Materials Science and Engineering Ministry of EducationChangsha 410083China Ningbo Boway Alloy Material Co. Ltd.Ningbo 315135China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Zhejiang Tianning Alloy Material Co. Ltd.Jinhua 321002China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China

Cu-0.57Cr-0.01Ca and Cu-0.58Cr-0.01Sr(wt.%)alloys were fabricated and processed by thermo-mechanical *** mechanical and electrical properties and microstructure were investigated in detail and compared with those of a Cu-0.57Cr(wt.%)*** results showed that the softening resistance of the Cu-Cr alloy was significantly improved by the additions of Ca and Sr *** with the Cu-Cr alloy,the deformation microstructure of the Cu-Cr-Ca and Cu-Cr-Sr alloys was more difficult to recrystallize at elevated temperatures,and the Cr precipitates in the Cu-Cr-Ca and Cu-Cr-Sr alloys were smaller in size and had an FCC structure at any given aging *** high strengths of the Cu-Cr-Ca and Cu-Cr-Sr alloys were mainly attributed to the dislocation strengthening provided by high-density dislocations and the precipitate strengthening provided by fine Cr ***-principles calculation showed that the segregations of Ca and Sr atoms at interface between Cr precipitates and copper matrix were favorable in *** segregation effectively hindered the growth of Cr precipitates and significantly enhanced the pinning effect on the motion of dislocations and subgrain boundaries,eventually leading to the improvement in the softening resistance of the Cu-Cr alloy.

关键词： Cu-Cr alloy Softening resistance Microstructure Strengthening Segregation

套式聚合酶链式反应诊断三日疟原虫感染的临床应用

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中华诊断学电子杂志 2014年第4期2卷 270-274页

作者：李瑾徐超魏庆宽肖婷孔祥礼王用斌张本光魏艳彬赵长磊黄炳成山东省医学科学院山东省寄生虫病防治研究所山东省疟疾诊断参比实验室济宁272033

目的应用套式聚合酶链式反应(PCR)扩增小亚单位核糖体核糖核酸(SSUrRNA)基因诊断三日疟原虫感染,以减少三日疟的漏诊和误诊。方法分别提取可疑三日疟患者抗凝血DNA和对照间日疟、恶性疟患者抗凝血DNA,以此为模板,用疟原虫属特异性引物... 详细信息

目的应用套式聚合酶链式反应(PCR)扩增小亚单位核糖体核糖核酸(SSUrRNA)基因诊断三日疟原虫感染,以减少三日疟的漏诊和误诊。方法分别提取可疑三日疟患者抗凝血DNA和对照间日疟、恶性疟患者抗凝血DNA,以此为模板,用疟原虫属特异性引物进行第一轮扩增;然后以第一轮扩增产物为模板,用4种疟疾的种特异性引物进行第二轮扩增,比较扩增出的18 SSU rRNA基因片段的大小,并对目的片段进行测序鉴定。结果经属特异性引物PCR扩增后,3个样本均出现大小约为1 200bp的条带。经种特异性引物PCR扩增后,间日疟及恶性疟确诊样本均扩增出相应的120bp和205bp特异性条带;可疑患者样本仅在用三日疟原虫种特异性作引物时扩增出144bp特异条带,与理论值相符,与Genbank标准序列对比显示,扩增片段大小及测序结果均完全正确。证实患者感染三日疟原虫。结论利用小亚单位核糖体核糖核酸基因片段三日疟种特异引物进行扩增可以用于诊断三日疟原虫感染。

关键词：疟原虫,三日核糖体亚单位 RNA,核糖体聚合酶链式反应,套式诊断

Hierarchical Porous Carbon Nanotube Spheres for High-performance K-O2 Batteries

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Chemical Research in Chinese Universities 2021年第2期37卷 254-258页

作者： DOU Yaying ZHANG Yantao GUO Feng SHEN yanbin CHEN Gang wei Yingjin XIE Zhaojun ZHOU Zhen School of Materials Science and Engineering Institute of New Energy Material ChemistryKey Laboratory of Advanced Energy Materials ChemistryMinistry of EducationRenewable Energy Conversion and Storage Center(ReCast)Nankai UniversityTianjin300350P.R.China Key Laboratory of Physics and Technology for Advanced Batteries Ministry of EducationCollege of PhysicsJilin UniversityChangchun130012P.R.China College of Chemistry and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang050018P.R.China Zhejiang Chint Electrics Co. Ltd.Shanghai201614P.R.China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123P.R.China

In view of the ever-growing pressure for green gas emissionreduction,there is an urgent need for renewable *** metal-oxygen batteries,especially lithium-oxygen(Li-o2)batteries,are deemed themost promising energy stora... 详细信息

关键词： Potassium-oxygen battery Potassium superoxide Carbon nanotube

Antioxidant induced bulk passivation for efficient and stable hole transport layer-free carbon electrode perovskite solar cells

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Chinese Chemical Letters 2023年第6期34卷 219-224页

作者： Yetai Cheng Qingbo wei Nannan Wang Zhangwen Ye yanbin Zhao Qiongyao Wang Depeng Chu Lingxing Zan Feng Fu Yucheng Liu Key Laboratory of Chemical Reaction Engineering of Shaanxi Province College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000China Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710062China

Defect passivation is one of the important strategies to improve the efficiency and stability of perovskite solar *** this work,2,6-di-tert-butyl-4-methylphenol(BHT)as antioxidant was introduced into the perovskite precursor solution to improve the quality of the prepared perovskite films,so that these films performed a larger and uniform grain ***,the-OH functional group in BHT interacts with I-,thus reducing the density of defect states and inhibiting the non-radiative *** presence of hydrophobic groups in BHT protects the film from moisture erosion and improves the long-term stability of PSCs *** maximum photoelectric conversion efficiency of the constructed ITO/SnO_(2)/BHTMAPbI_(3)/Carbon device is 16.88%,and the unpackaged cell maintains the initial efficiency of 99.3%after698 h of storage under the environmental condition of 30%*** work provides an efficient approach to improve the performance of printable hole transport layer-free carbon electrode perovskite solar cells.

关键词： Perovskite solar cells Additive engineering Defect passivation Long-term stability Carbon electrode