检索结果-南通市图书馆

Discovery of lacustrine shale deposits in the Yanshan Orogenic Belt,China: Implications for hydrocarbon exploration

Geoscience Frontiers 2021年第6期12卷 326-353页

作者： Yuanfu Zhang Xiaodong Yuan Min Wang Pengcheng Ge yancui huo Jie Xu Jianguo Zhang Jian Cheng Zaixing Jiang School of Energy Resources China University of GeosciencesBeijing 100083China Institute of Earth Sciences China University of GeosciencesBeijing 100083China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China School of Ocean Sciences China University of GeosciencesBeijing 100083China Wuxi Branch of SINOPEC Petroleum Exploration&Production Research Institute WuxiJiangsu 214126China

The mechanism of formation of lacustrine deposits within stable orogenic belts and their potential for shale oil and gas exploration are frontier themes of challenge in the fields of sedimentology and petroleum exploration. Orogenic belts witness strong tectonic activities and normally cannot host stable lacustrine basins and deep shale formations. Therefore, basins in orogenic belts are considered to have no potential to form shale hydrocarbon reservoirs. Here we investigate the Luanping Basin located in the Yanshan orogenic belt where previous studies regarded rivers and fan deltas as the major main Mesozoic deposits. Based on detailed field exploration and scientific drilling, we report the finding of a large number of lacustrine shale continental deep-water deposits in the Mesozoic strata. Our finding of the occurrence of active shale oil and gas also in this basin also subvert the previous *** report SHRIMP zircon U-Pb age that define the bottom boundary of the target interval as 127.6 ± 1.7 Ma belonging to the early Cretaceous strata. Tectonics and climate are considered to be the main factors that controlled the deep-water sedimentation during this period. The drill cores revealed evidence of shale gas and the TOC of shale is 0.33%–3.60%, with an average value of 1.39% and Ro is 0.84%–1.21%, with an average value of 1.002%. The brittleness index of shale is between 52.7% and 100%. After vertical well fracturing, the daily gas production is more than 1000 m^(3). Our findings show that the basin has considerable potential for shale oil and gas. The geological resources of the shale gas in the Xiguayuan Fm. are estimated as 1110.12 × 10^(8) m^(3), with shale oil geological resources of 3340.152 × 10^(4) t. Our findings indicate that the Yanshan orogenic belt has potential exploration prospect. This work not only redefines the Luanping Basin as a rift deep-water Mesozoic Lake Basin, but also rules out the previous notion that the basin is dominated by

关键词： Luanping Basin Deep-water sedimentation Drill core data Lacustrine deposits Petroleum exploration

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

深源物质对滦平盆地白垩系西瓜园组古环境及油气成藏的影响

引用

古地理学报 2023年第6期25卷 1394-1406页

作者：赵健龙张元福袁晓冬霍艳翠葛鹏程蔡曦曜中国地质大学(北京)能源学院北京100083

火山活动或热液活动提供的深源物质可以保存在沉积岩中。在滦平盆地西瓜园组下段存在以玄武岩、泥晶碳酸盐岩纹层为代表的深源物质,可用通过薄片观察和地球化学分析手段,针对深源物质对其环境及油气成藏的影响进行分析。结果表明,西瓜... 详细信息

火山活动或热液活动提供的深源物质可以保存在沉积岩中。在滦平盆地西瓜园组下段存在以玄武岩、泥晶碳酸盐岩纹层为代表的深源物质,可用通过薄片观察和地球化学分析手段,针对深源物质对其环境及油气成藏的影响进行分析。结果表明,西瓜园组下段的深源物质主要是通过水下火山喷发和热液喷流活动进入沉积岩中的。通过环境指标(Th/U、V/Cr、V/(V+Ni)、CIW、Sr/Cu等)的变化规律,发现热液喷流活动对环境是频繁、剧烈的短暂影响,而水下火山喷发对环境是间或、较弱的长期影响。通过富有机质层与热液强度指标((Fe+Mn)/Ti、Al/(Al+Fe+Mn))的对比发现,富有机质层具有高(Fe+Mn)/Ti值、低Al/(Al+Fe+Mn)值的特点。根据以上研究表明,深源物质的参与极大地提高了古生产力,其喷发、喷流机制使得水体缺氧、分层,为有机质提供了良好的保存条件。

关键词：滦平盆地白垩系深源物质热液喷流水下火山油气成藏

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Apple leaf disease identification using genetic algorithm and correlation based feature selection method

引用

International Journal of Agricultural and Biological Engineering 2017年第2期10卷 74-83页

作者： Zhang Chuanlei Zhang Shanwen Yang Jucheng Shi yancui Chen Jia College of Computer Science and Information Engineering Tianjin University of Science and TechnologyTianjin 300222China Xijing University Xi’an710123China

Apple leaf disease is one of the main factors to constrain the apple production and *** takes a long time to detect the diseases by using the traditional diagnostic approach,thus farmers often miss the best time to prevent and treat the *** leaf disease recognition based on leaf image is an essential research topic in the field of computer vision,where the key task is to find an effective way to represent the diseased leaf *** this research,based on image processing techniques and pattern recognition methods,an apple leaf disease recognition method was proposed.A color transformation structure for the input RGB(Red,Green and Blue)image was designed firstly and then RGB model was converted to HSI(Hue,Saturation and Intensity),YUV and gray *** background was removed based on a specific threshold value,and then the disease spot image was segmented with region growing algorithm(RGA).Thirty-eight classifying features of color,texture and shape were extracted from each spot *** reduce the dimensionality of the feature space and improve the accuracy of the apple leaf disease identification,the most valuable features were selected by combining genetic algorithm(GA)and correlation based feature selection(CFS).Finally,the diseases were recognized by SVM *** the proposed method,the selected feature subset was globally *** experimental results of more than 90%correct identification rate on the apple diseased leaf image database which contains 90 disease images for there kinds of apple leaf diseases,powdery mildew,mosaic and rust,demonstrate that the proposed method is feasible and effective.

关键词： apple leaf disease diseased leaf recognition region growing algorithm(RGA) genetic algorithm and correlation based feature selection(GA-CFS)

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Apigenin, a natural flavonoid, promotes autophagy and ferroptosis in human endometrial carcinoma Ishikawa cells in vitro and in vivo

引用

Food Science and Human Wellness 2023年第6期12卷 2242-2251页

作者： yancui Liang Qian Zhong Runhui Ma Zhijing Ni Kiran Thakur Jianguo Zhang Zhaojun Wei School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China School of Biological Science and Engineering Collaborative Innovation Center for Food Production and SafetyNorth Minzu UniversityYinchuan 750021China

Apigenin,a natural flavonoid has been reported against a variety of cancer ***,it is unclear whether apigenin can promote autophagy and ferroptosis in Ishikawa *** are few reports on the mechanism of apigenin on autophagy and ferroptosis of endometrial cancer Ishikawa *** found that iron accumulation,lipid peroxidation,glutathione consumption,p62,HMOX1,and ferritin were increased,while,solute carrier family 7 member 11 and glutathione peroxidase 4 were ***-1,an iron-death inhibitor could reverse the effects of apigenin in Ishikawa *** the other hand,apigenin could promote autophagy via up-regulating Beclin 1,ULK1,ATG5,ATG13,and LC3B and down-regulating AMPK,mTOR,P70S6K,and ***,apigenin could inhibit tumor tissue proliferation and restrict tumor growth via ferroptosis in vivo.

关键词： Flavonoid Apigenin Autophagy Ferroptosis Ishikawa cells Tumor growth Endometrial carcinoma

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of a Potential Autochthonous Probiotic Bacillus subtilis 2-1 on the Growth and Intestinal Microbiota of Juvenile Sea Cucumber,Apostichopus japonicus Selenka

引用

Journal of Ocean University of China 2018年第2期17卷 363-370页

作者： ZHAO yancui YUAN Lei WAN Junli SUN Hushan WANG Yiyan ZHANG Qin School of Life Science Ludong University Department of Food Engineering Shandong Business Institute Key Laboratory of Marine Biotechnology Guangxi Institute of Oceanology

The effects of Bacillus subtilis 2-1 from the intestine of healthy sea cucumber on the growth, digestive enzyme activities and intestinal microbiota of juvenile sea cucumber(Apostichopus japonicus) were determined in the present study. Sea cucumber was fed with Sargassum thunbergii powder supplemented with B. subtilis 2-1 at different concentrations varying among 0(control), 10~5, 10~7, and 10~9 CFU g^(-1) for 8 weeks. Results showed that the growth performance and intestinal amylase and trypsin activities were significantly increased by dietary B. subtilis 2-1 at 10~9 CFU g^(-1)(P 0.05). The polymerase chain reaction denaturing gradient gel electrophoresis and 16S rRNA gene sequencing analysis indicated that dietary B. subtilis 2-1 at 105 and 107 CFU g^(-1) inhibited most of the Proteobacteria including those in genus Vibrio. Dietary B. subtilis 2-1 at 10~9 CFU g^(-1) not only decreased the abundance and species of genus Vibrio, but also increased the intensity of genera Psychrobacter and Bacillus. A specific dosage of dietary B. subtilis 2-1 could increase the growth and modulate the intestinal microbiota of sea cucumber; thus it might be a novel probiotic for keeping the health of sea cucumber.

关键词： Apostichopus japonicus probiotic Bacillus growth digestive enzyme intestinal microbiota

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multi-chambered,carbon-coated Ni_(0.4)Fe_(2.6)O_(4) nanoparticle superlattice microspheres for boosting water oxidation reaction

Aggregate

引用

Aggregate 2021年第2期2卷 145-153页

作者： Mingzhong Li Yuwei Deng Guanhong Wu Shuqing Xue yancui Yan Zihan Liu Jinxiang Zou Dong Yang Angang Dong Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of ChemistryFudan UniversityShanghaiChina State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science Fudan UniversityShanghaiChina

Developing active and robust non-noble-metal-based electrocatalysts for the oxygen evolution reaction(OER)is of vital practical significance for accelerating the kinetics of water ***,a novel double emulsion template method is proposed to design and prepare hierarchically multichambered,carbon-coated Ni_(0.4)Fe_(2.6)O_(4) nanoparticle superlattice microspheres(M-NFO@C-NSMs)for the highly efficient oxygen *** high-temperature calcination under inert gas enables an improved electrochemical property by rationally transforming the long-chain organic capping ligands into partially graphitized uniform carbon *** importantly,benefiting from the unique hierarchical superstructure with macro-/meso-/microporosities and three-dimensional continuous conductive carbon frameworks,M-NFO@C-NSMs exhibit comprehensively enhanced OER activity in a dilute alkaline electrolyte as compared to their solid counterparts and most spinelbased electrocatalysts reported to ***,the collective property of supraparticles endowed M-NFO@C-NSMs with superior long-term cyclic *** work sheds light on the sophisticated design of functionalized supraparticles for efficient water splitting.

关键词： carbon coating OER porous electrocatalyst self-assembly supraparticle

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Influence of Dietary Probiotic Bacillus TC22 and Prebiotic Fructooligosaccharide on Growth,Immune Responses and Disease Resistance against Vibrio splendidus Infection in Sea Cucumber Apostichopus japonicus

引用

Journal of Ocean University of China 2011年第3期10卷 293-300页

作者： ZHAO yancui MAI Kangsen XU Wei ZHANG Wenbing AI Qinghui ZHANG Yanjiao WANG Xiaojie LIUFU Zhiguo The Key Laboratory of Mariculture Ministry of Education Ocean University of China Qingdao 266003 P. R. China

The effects of probiotic Bacillus TC22 (isolated from intestine of infected sea cucumber) and prebiotic fructooligosaccharide (FOS) on growth, immunity and disease resistance in sea cucumber Apostichopus japonicus were studied. Six experimental diets were formulated with combinations of three levels of TC22 (0, 107 and 109 CFU g-1 diet) and two levels of FOS (0 and 0.5%) in a 3 × 2 factorial experiment. At the end of the 8-week feeding trial,animals were challenged by injecting Vibrio splendidus. The results revealed that the specific growth rates (SGR) of sea cucumbers were not affected by TC22 and FOS, or the interaction between TC22 and FOS (P > 0.05). However,there were significant interactions between TC22 and FOS for immune response and disease resistance in sea cucumbers (P 0.05). Therefore, further studies should examine the effects of combinations of other levels of FOS(> 0.5% or < 0.5%) and TC22 on the immunity and disease resistance of sea cucumbers.

关键词： Apostichopus japonicus probiotics prebiotics immunity Vibrio splendidus

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Novel Thermal Polymerization Synergistic Behavior of Phthalonitrile-Phenylethynyl Resins

Novel Thermal Polymerization Synergistic Behavior of Phthalo...

引用

2014年全国高分子材料科学与工程研讨会

作者： YUAN Ping LIU yancui HU Jianghuai ZENG Ke YANG Gang State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan University

Phthalonitrile resins,as a type of high performance thermosetting materials,have been widely studied in the past decades,due to the outstanding combination of properties such as thermal and oxidative-thermal stability,low water uptake and flame-retardance.1 However,the polymerization of the neat resin is extremely sluggish,thus limiting their application.2 On the other hand,phenylethynyl end-capped thermosetting resins have also received much attention.3 The derived polymers exhibit unique thermal and dimensional stability,excellent chemical resistance and mechanical properties,which offer promise for advanced composites ***,the intensively curing exothermic effect of the phenylethynyl-based resins was an unbeneficial characteristic for fabrication of thick composite *** this study,the model compound with both phthalonitrile and phenylethynyl groups 3PN3PEODPA,the phthalonitrile or phenylethynyl end-capped imide compounds（3PNOPDA or 3PEODPA）were synthesized from 4,4’-oxydiphthalic anhydride（ODPA）with 4-（3-aminophenoxy）phthalonitrile or 3-phenylethynyl aniline by imidization of chemical dehydration（SCHEME 1）,with an aim to combine their own curing characteristics,which may offer a new type of resin systems with adjustable processability and tailored *** rheological behavior of the imide compounds was studied by dynamic oscillation employing a TA Instruments AR-2000ex rheometer in conjunction with an environmental testing chamber for temperature *** FIGURE 1,storage modulus is shown as a function of time at 330℃for the three imide *** of the samples exhibited a melt viscosity of less than 0.1 Pa.s at 330℃.When held at 330℃for a period of time,the melt viscosity of the compound 3PN3PEODPA with both phenylethynyl and phthalonitrile groups increased,while that of3PNODPA is very low,and maintained at about 0.1 Pa.s for a relatively long ***,through a comparative study of the rheological behavior of 3PEODPA

关键词： phthalonitrile phenylethynyl thermal polymerization synergistic effect imide curing

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

磁控溅射法制备T型柔性薄膜热电偶

引用

中国表面工程 2022年第1期35卷 231-236页

作者：熊智淳张哲娟凌彦萃上海市计量测试技术研究院在线检测与通用计量技术研究所上海201203 华东师范大学纳光电集成与先进装备教育部工程中心上海200062

为解决测温元器件薄而不柔的问题,适应柔性测温技术需求,采用真空卷绕磁控溅射技术制备T型柔性薄膜热电偶。通过对制备过程中溅射功率和时间的研究,系统分析制备条件对柔性薄膜热电偶的薄膜厚度及表面电阻的影响,将T型柔性薄膜热电偶进... 详细信息

为解决测温元器件薄而不柔的问题,适应柔性测温技术需求,采用真空卷绕磁控溅射技术制备T型柔性薄膜热电偶。通过对制备过程中溅射功率和时间的研究,系统分析制备条件对柔性薄膜热电偶的薄膜厚度及表面电阻的影响,将T型柔性薄膜热电偶进行校准测试后,确定最佳制备条件。结果表明,80 W直流溅射40 min制得阳极铜膜;150 W直流溅射40 min制得阴极铜镍合金(康铜)膜,组合而成的柔性热电偶测温性能最佳。磁控溅射工艺制备厚度为0.05mm、长度为130mm以上的T型柔性薄膜热电偶,其温度测量范围可达-50.0~150.0℃,温度最大偏差仅为±0.3℃,具有良好的灵敏度及测温能力。T型柔性薄膜热电偶的可控制备,实现T型热电偶既柔又薄,减少传统测量方式引起的误差,为其大规模生产应用奠定了基础。

关键词：磁控溅射柔性薄膜热电偶卷对卷

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

高温对转基因地被菊的影响

引用

东北林业大学学报 2014年第3期42卷 45-47页

作者：熊毅郭彦萃张志齐齐哈尔大学齐齐哈尔161006

以已转DREB1A基因地被菊的4个株系为研究对象,以野生型植株为对照,分析了其在高温胁迫条件下形态及生理指标变化规律。结果表明:经48 h高温胁迫后有3个转基因株系的叶片相对含水量显著高于野生型植株,电导率及MDA(丙二醛)质量摩尔浓度... 详细信息

以已转DREB1A基因地被菊的4个株系为研究对象,以野生型植株为对照,分析了其在高温胁迫条件下形态及生理指标变化规律。结果表明:经48 h高温胁迫后有3个转基因株系的叶片相对含水量显著高于野生型植株,电导率及MDA(丙二醛)质量摩尔浓度均以野生型最高;当胁迫时间大于24 h时,转基因株系的SOD(超氧化物歧化酶)活性均高于野生型;在各胁迫时间点内野生型植株POD(过氧化物酶)活性均低于转基因株系;形态指标方面,QY2、QY3的株高、冠幅胁迫指数均显著高于野生型。从而得出转基因株系与野生型植株相比具有一定的高温胁迫耐性。

关键词：地被菊高温胁迫抗旱基因

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：