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Comparison between double caliper,imaging logs,and array sonic log for determining the in-situ stress direction:A case study from the ultra-deep fractured tight sandstone reservoirs,the Cretaceous Bashijiqike Formation in Keshen8 region of Kuqa depress

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Petroleum Science 2022年第6期19卷 2601-2617页

作者： song Wang Gui-Wen Wang Dong Li Xing-Neng Wu Xu Chen Qi-Qi Wang jun-Tao Cao Yi-Lin Zhang State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum BeijingBeijing102249China College of Geosciences China University of Petroleum BeijingBeijing102249China Research Institute of Petroleum Exploration and Development Tarim Oilfield CompanyCNPCKorla841000XinjiangChina Department of Geological Sciences University of Texas at Austin2275 Speedway Stop C9000AustinTX78712USA

The tight sandstone in the Tarim Basin has the characteristics of large burial depth and development of nature fractures due to concentrated in-situ stress. Identifying the present-day in-situ stress orientation is important in hydrocarbon exploration and development, but also a key scientific question in understanding naturally fractured reservoirs. This paper presents a case study where we integrate various methods using wireline and image-log data, to identify present-day in-situ stress direction of ultra-deep fractured tight sandstone reservoirs, in the Kuqa depression. We discuss the formation mechanism of the elliptical borehole, compares the advantages and applicable conditions of the double caliper method,resistivity image logs and array sonic logs method. The well borehole diameter is measured orthogonally,then the ellipse is fitted, and the in-situ stress orientation is identified by the azimuth of the short-axis borehole, but it fails in the borehole expansion section, the fracture development section and the borehole collapse section. The micro-resistivity image logs method reveals the borehole breakouts azimuth, and also the strike of induced fractures, which are used to determine the orientation of in-situ stress. However, under water-based mud conditions, it’s hard to distinguish natural fractures from induced fractures by image logs. Under oil-based mud conditions, the induced fractures are difficult to identify due to the compromised image quality. As for the sonic log, shear waves will split when passing through an anisotropic formation, shear waves will split during propagation, and the azimuth of fast shear waves is consistent with the orientation of in-situ stress. However, it is usually affected by the anisotropy caused by the excessively fast rotation of the well log tools, so that the azimuth of fast shear wave cannot effectively reflect the orientation of the in-situ stress. Based on comprehensive assessment and comparison, in this paper we

关键词： Fractured tight sandstone In-situ stress Orientation Well logs

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食品类专业在线开放课程资源建设实践策略

食品工业 2024年第3期45卷 195-197页

作者：崔瑞国张丽梁建兰孟军宋丽军河北科技师范学院食品科技学院秦皇岛066600

食品安全问题是当前社会普遍关心的问题,也是我国高校食品专业教育改革的一个重要课题,要想提高教学质量,必须从教学方法和内容等方面加以革新,尤其是高校要做好对在线开放课程资源的利用。但是,就目前的课程情况而言,在线公开课程的开... 详细信息

食品安全问题是当前社会普遍关心的问题,也是我国高校食品专业教育改革的一个重要课题,要想提高教学质量,必须从教学方法和内容等方面加以革新,尤其是高校要做好对在线开放课程资源的利用。但是,就目前的课程情况而言,在线公开课程的开放性不够、课程资源的缺乏、对师资的支持和培养条件不完善等问题,对学生的基本知识能力培养十分不利,而且教师线上课堂教育往往不能取得理想的教学成效,因此文章对食品类专业课程在线开放课程资源的建设问题展开研究,并对其进行了探讨,以期提供经验借鉴。

关键词：食品类专业在线课程资源建设实践策略

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同孔重复射孔数值模拟

采油工程

采油工程 2024年第1期 73-76,84页

作者：王晓巍姜彦东刘敬伟盛军宋欣大庆油田有限责任公司装备制造集团大庆油田有限责任公司试油试采分公司

同孔重复射孔是指射孔弹对某一位置进行连续侵彻,从而达到增加孔深的目的。为提高同孔重复射孔弹性能,开展同孔重复射孔数值模拟研究。基于ANSYS/LS-DYNA的完全重启动功能,研究实现了数值模拟同孔重复射孔侵彻过程,并建立了一套同孔重... 详细信息

同孔重复射孔是指射孔弹对某一位置进行连续侵彻,从而达到增加孔深的目的。为提高同孔重复射孔弹性能,开展同孔重复射孔数值模拟研究。基于ANSYS/LS-DYNA的完全重启动功能,研究实现了数值模拟同孔重复射孔侵彻过程,并建立了一套同孔重复射孔数值模拟计算方法。与试验结果对比,模拟穿深结果与试验结果符合率达到85%以上,为同孔重复射孔的方案筛选及优化设计提供了理论指导。

关键词：射孔弹同孔重复射孔数值仿真完全重启动优化设计

The Mechanism of Carotenoid Degradation in Flue-Cured Tobacco and Changes in the Related Enzyme Activities at the Leaf-Drying Stage During the Bulk Curing Process

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Agricultural Sciences in China 2010年第9期9卷 1381-1388页

作者： song Zhao-peng LI Tong-shuai ZHANG yong-gang CAO Hui-jing GONG Chang-rong ZHANG Wei-jian College of Agronomy Nanjing Agricultural University Nanjing 210095 P.R. China College of Tobacco Science Henan Agricultural University Zhengzhou 450002 P.R. China

The mechanism of carotenoid degradation and the changes in the activities of related enzymes in flue-cured tobacco at the leaf-drying stage during the bulk-curing process were studied in order to provide theoretical basis for optimization of curing technology. The effect of different rising speeds of temperature on the carotenoid degradation and the related enzymes activities at the color-fixing stage during the bulk curing process was studied by using the electric-heated fluecuring barn designed by Henan Agricultural University, China, based on curing technology with yellowing at low temperature and moderate humidity and leaf drying at moderate humidity. The results showed that the carotenoid degradation components （β-carotene, lutein, neoxanthin, and violaxthin） decreased gradually at the color-fixing stage during the bulk curing process. The carotenoid degradation components viz.,β-carotene, lutein, neoxanthin, and violaxthin at the slow heating curing （T1） were relatively higher than the rapid heating curing （T2） accounting for 10, 2, 32 and 32% respectively, but there were no differences among treatments （P〉 0.05）. The effect of different conditions of curing on the activities of enzymes related to carotenoids degradation were significant. The lipoxygenase, phenylalanine ammonialyase, peroxidase, and polyphenol oxidase enzymes had a bidirectional effect on the quality of tobacco leaves and it was beneficial to form more premise matter of aroma based on the higher enzyme activities at the early leaf-drying stage. The slow heating could regulate the change in various enzymes＇ activities reasonably, making cell redox reaction to reach the dynamic balance and make the degradation of carotenoids adequately. Meanwhile, it could avoid the occurrence of browning reaction and provide foundation for improving the quality of tobacco and optimization of technology for bulk curing and further enhancing aroma.

关键词： bulk curing leaf-drying stage carotenoids mechanism of degradation enzyme

Remotely Sharing a Single-Qubit Operation with a Five-Qubit Genuine State

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Chinese Physics Letters 2013年第2期30卷 16-19页

作者： YE Biao-Liang LIU Yi-Min LIU Xian-song ZHANG Zhan-jun School of Physics&Material Science Anhui UniversityHefei 230039 Department of Physics Shaoguan UniversityShaoguan 512005

A three-party scheme for remotely sharing a single-qubit operation with Brown state and local operation and classical communication is *** discussions are made to show its important features,including determinacy,symm... 详细信息

关键词： operation discussions symmetry

The Dynamics of Dopamine D_(2) Receptor-Expressing Striatal Neurons and the Downstream Circuit Underlying L-Dopa-Induced Dyskinesia in Rats

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Neuroscience Bulletin 2023年第9期39卷 1411-1425页

作者： Kuncheng Liu Miaomiao song Shasha Gao Lu Yao Li Zhang Jie Feng Ling Wang Rui Gao yong Wang Department of Physiology and Pathophysiology and Institute of Neuroscience School of Basic Medical SciencesXi’an Jiao Tong University Health Science CenterXi’an710061China Department of Clinical Medicine Xi’an Jiao Tong University Health Science CenterXi’an710061China Department of Rehabilitation Medicine The Second Affiliated Hospital of Xi’an Jiao Tong UniversityXi’an710004China Department of Medical Imaging and Nuclear Medicine The First Affiliated Hospital of Xi’an Jiao Tong UniversityXi’an710061China

L-dopa(l-3,4-dihydroxyphenylalanine)-induced dyskinesia(LID)is a debilitating complication of dopamine replacement therapy for Parkinson’s *** potential contribution of striatal D_(2) receptor(D2R)-positive neurons and downstream circuits in the pathophysiology of LID remains *** this study,we investigated the role of striatal D_(2)R+neurons and downstream globus pallidus externa(GPe)neurons in a rat model of *** administration of raclopride,a D_(2)R antagonist,significantly inhibited dyskinetic behavior,while intrastriatal administration of pramipexole,a D_(2)-like receptor agonist,yielded aggravation of dyskinesia in LID *** photometry revealed the overinhibition of striatal D_(2)R+neurons and hyperactivity of downstream GPe neurons during the dyskinetic phase of LID *** contrast,the striatal D2R+neurons showed intermittent synchronized overactivity in the decay phase of *** with the above findings,optogenetic activation of striatal D_(2)R+neurons or their projections in the GPe was adequate to suppress most of the dyskinetic behaviors of LID *** data demonstrate that the aberrant activity of striatal D_(2)R+neurons and downstream GPe neurons is a decisive mechanism mediating dyskinetic symptoms in LID rats.

关键词： Levodopa Dyskinesia Parkinson's disease D_(2) receptor Fiber photometry Optogenetics

Highly redispersible CNT dough for better processiblity

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Journal of Materials Science & Technology 2023年第21期152卷 65-74页

作者： Meng Lan Xiaohua Jia Rui Tian Jin Yang Dan Shao Sizhe Wang yong Li Lei Feng Jiayin Yuan Miao Zhang Haojie song School of Materials Science&Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021China Department of Materials&Environmental Chemistry Stockholm UniversitySvante Arrheniusvag 16CStockholm 10691Sweden

Carbon nanotubes(CNTs)have received considerable attention for their excellent thermal and electrical conductivity as well as scalable ***,CNT dispersions are prone to settling and have a short shelf time,especially under high concentration,which significantly hinders their further processing and increases transportation ***,we report a highly concentrated CNT dough enabled by ionic liquid crystal(ILC)as *** from the temperature-controlled physical transformation of the ILC,the CNTs of the powder state are successfully transferred to highly processable dough with excellent electrical conductivity,flame retardancy,and outstanding redispersibility even after 180 days of *** particular,the CNT dough exhibits excellent self-healing properties and good reshapable *** bulk form CNT derived from the ILC armored CNT dough are realized by facile processing *** nanocomposite papers with ANF nanofiber exhibited excellent photothermal conversion and Joule heating *** redispersible CNT doughs presented here promise to revolutionize traditional CNT powder and dispersions as the primary raw material for building CNT-based architectures and facilitate the large-scale application of CNTs.

关键词： Processable doughs Carbon nanotubes Ionic liquid crystals Composite papers Photothermal conversion

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火电厂粉煤灰智能运营平台研究与开发

锅炉制造 2024年第1期 59-61页

作者：李广伟刘国辉饶光华彭俊王松国家电投江西电力有限公司江西南昌330096

以火力发电厂粉煤灰销售过程为背景,将云平台大数据技术、移动APP技术、微信小程序、二维码技术等应用于火力发电厂粉煤灰智能运营平台。该系统围绕合同、缴费、称重、排队、装车、质检、结算、大屏显示、视频监控、放灰设备自动控制、... 详细信息

以火力发电厂粉煤灰销售过程为背景,将云平台大数据技术、移动APP技术、微信小程序、二维码技术等应用于火力发电厂粉煤灰智能运营平台。该系统围绕合同、缴费、称重、排队、装车、质检、结算、大屏显示、视频监控、放灰设备自动控制、客户关系管理等运转流程,注重系统的实用性和先进性,可实现用户自助操作、车辆远程排队、报警智能提醒、灰库无人值守、辅助决策分析等功能。

关键词：云平台粉煤灰智能运营

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小细胞外囊泡与三阴性乳腺癌的关系

中国现代普通外科进展 2024年第4期27卷 319-322页

作者：尹俊倩邹腾跃宋昱颖毕铁强潍坊医学院临床医学院山东潍坊261053 山东大学附属威海市立医院甲状腺乳腺外科山东威海264200

三阴性乳腺癌(triple negative breast cancer,TNBC)是一种不表达雌激素受体(ER)、孕激素受体(PR)和人表皮生长因子受体2(HER-2)的特殊乳腺癌亚型,组织分型属浸润性乳腺癌[1]。TNBC的临床特征包括高侵袭性、高转移潜力、易复发和预后不... 详细信息

三阴性乳腺癌(triple negative breast cancer,TNBC)是一种不表达雌激素受体(ER)、孕激素受体(PR)和人表皮生长因子受体2(HER-2)的特殊乳腺癌亚型,组织分型属浸润性乳腺癌[1]。TNBC的临床特征包括高侵袭性、高转移潜力、易复发和预后不良,属难治型疾病,目前仍缺乏标准化治疗方案[2]。TNBC治疗主要有手术治疗、放射及化学治疗、内分泌治疗、靶向治疗[3-4]。目前主流治疗方式主要基于宏观手术和微观基因水平上,在细胞学方向仅以靶向和免疫为主。而小细胞外囊泡(small extracellular vesicles,sEV)广泛参与多种肿瘤的演变过程。本文就sEV的功能特性及其与TNBC相关情况进行综述。

关键词：三阴性乳腺癌小细胞外囊泡