检索结果-南通市图书馆

Hydrocarbon Generation Potential and Organic Matter Enrichment Mechanism of the Cambrian Marine Shale in the Tadong Low Uplift, Tarim Basin

引用

ACTA GEOLOGICA SINICA-ENGLISH EDITION 2024年第5期98卷 1301-1321页

作者： Miao, Huan Wang, Yanbin Jiang, Zhenxue Zhao, Shihu Shang, Peng Gong, Xun tao, chuanqi Zhang, Yu China Univ Petr Natl Key Lab Petr Resources & Engn Beijing 102249 Peoples R China China Univ Petr Unconvent Oil & Gas Sci & Technol Res Inst Beijing 102249 Peoples R China China Univ Min & Technol Coll Geosci & Surveying Engn Beijing 100083 Peoples R China SINOPEC Petr Explorat & Prod Res Inst Beijing 102206 Peoples R China PetroChina Changqing Oilfield Co Gas Prod Plant 2 Yulin 719000 Shaanxi Peoples R China Peking Univ Sch Earth & Space Sci Beijing 100871 Peoples R China Liaoning Petrochem Univ Sch Civil Engn Fushun 113001 Liaoning Peoples R China

Cambrian shales in China and elsewhere contain abundant oil and gas resources. However, due to its deep burial and limited outcrop, there has been relatively little research conducted on it. The Cambrian shale of the Tadong low uplift in the Tarim Basin of western China, specifically the Xidashan-Xishanbulake Formation (Fm.) and overlying Moheershan Fm. provide a case study through the use of organic petrology, mineralogy, organic and elemental geochemistry, with the aim of analyzing and exploring the hydrocarbon generation potential (PG) and organic matter (OM) enrichment mechanisms within these shale formations. The results indicate that: (1) the Cambrian shale of the Tadong low uplift exhibits relatively dispersed OM that consists of vitrinite-like macerals and solid bitumen. These formations have a higher content of quartz and are primarily composed of silica-based lithology; (2) shale samples from the Xidashan-Xishanbulake and Moheershan formations demonstrate high total organic carbon (TOC) and low S-2 content. The OM is predominantly type I and type II kerogens, indicating a high level of maturation in the wet gas period. These shales have undergone extensive hydrocarbon generation, showing characteristics of relatively poor PG; (3) the sedimentary environments of the Xidashan-Xishanbulake and Moheershan formations in the Tadong low uplift are similar. They were deposited in warm and humid climatic conditions, in oxygen-deficient environments, with stable terrigenous inputs, high paleoproductivity, high paleosalinity, weak water-holding capacity, and no significant hydrothermal activity; and (4) the relationship between TOC and the paleoproductivity parameter (P/Ti) is most significant in the Lower Cambrian Xidashan-Xishanbulake Fm., whereas correlation with other indicators is not evident. This suggests a productivity-driven OM enrichment model, where input of land-derived material was relatively small during the Middle Cambrian, and the ancient water exhibi

关键词： Conventional resources hydrocarbon generation potential geochemistry sedimentary environment enrichment mechanism organic matter Cambrian Tadong low uplift SOUTH CHINA CONSTRAINTS SOURCE-ROCK EVALUATION TURPAN-HAMI BASIN GEOCHEMICAL CHARACTERISTICS BLACK SHALES RARE-EARTH NW CHINA LOWER ORDOVICIAN SILICEOUS ROCKS TRACE-ELEMENTS

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

Hydrocarbon Generation Potential and Organic Matter Enrichment Mechanism of the Cambrian Marine Shale in the Tadong Low Uplift, Tarim Basin

引用

Acta Geologica Sinica(English Edition) 2024年第5期 1301-1321页

作者： MIAO Huan WANG Yanbin JIANG Zhenxue ZHAO Shihu SHANG Peng GONG Xun tao chuanqi ZHANG Yu State Key Laboratory of petroleum Resources and Engineering China University of Petroleum Unconventional Unconventional Petroleum Research Institute Research Institute China University of Petroleum College of Geoscience and Surveying Engineering China University of Mining and Technology Petroleum Exploration and Production Research Institute SINOPEC Second Gas Production Plant PetroChina Changqing Oilfield Company School of Earth and Space Sciences Peking University School of Civil Engineering Liaoning Petrochemical University

Cambrian shales in China and elsewhere contain abundant oil and gas resources. However, due to its deep burial and limited outcrop, there has been relatively little research conducted on it. The Cambrian shale of the Tadong low uplift in the Tarim Basin of western China, specifically the Xidashan–Xishanbulake Formation（Fm.） and overlying Moheershan Fm. provide a case study through the use of organic petrology, mineralogy, organic and elemental geochemistry, with the aim of analyzing and exploring the hydrocarbon generation potential（PG） and organic matter（OM） enrichment mechanisms within these shale formations. The results indicate that:（1） the Cambrian shale of the Tadong low uplift exhibits relatively dispersed OM that consists of vitrinite-like macerals and solid bitumen. These formations have a higher content of quartz and are primarily composed of silica-based lithology;（2） shale samples from the Xidashan–Xishanbulake and Moheershan formations demonstrate high total organic carbon（TOC） and low pyrolytic hydrocarbon content（S2） content. The OM is predominantly type Ⅰ and type Ⅱ kerogens, indicating a high level of maturation in the wet gas period. These shales have undergone extensive hydrocarbon generation, showing characteristics of relatively poor PG;（3） the sedimentary environments of the Xidashan–Xishanbulake and Moheershan formations in the Tadong low uplift are similar. They were deposited in warm and humid climatic conditions, in oxygen-deficient environments, with stable terrigenous inputs, high paleoproductivity, high paleosalinity, weak water-holding capacity, and no significant hydrothermal activity; and（4） the relationship between TOC and the paleoproductivity parameter（P/Ti） is most significant in the Lower Cambrian Xidashan–Xishanbulake Fm., whereas correlation with other indicators is not evident. This suggests a productivity-driven OM enrichment model, where input of landderived material was relatively small during the Middle Cambrian, and the a

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

意外充分性引导的深度神经网络测试样本生成

引用

计算机研究与发展 2024年第4期61卷 1003-1017页

作者：郭虹静陶传奇黄志球南京航空航天大学计算机科学与技术学院南京210016 高安全系统的软件开发与验证技术工信部重点实验室(南京航空航天大学) 南京210016 计算机软件新技术国家重点实验室(南京大学) 南京210023

由于深度神经网络(deep neural network,DNN)模型的复杂性和不确定性等属性,对模型的一般行为和边界行为进行充分的测试是保障模型质量的重要手段.当前的研究主要基于制定的覆盖准则,结合模糊测试技术生成衍生测试样本,从而提升测试充分... 详细信息

由于深度神经网络(deep neural network,DNN)模型的复杂性和不确定性等属性,对模型的一般行为和边界行为进行充分的测试是保障模型质量的重要手段.当前的研究主要基于制定的覆盖准则,结合模糊测试技术生成衍生测试样本,从而提升测试充分性,但较少综合考虑测试样本的多样性及个体揭错能力.意外充分性指标量化测试样本与训练集在神经元输出方面的差异,是测试充分性评估的重要指标,目前缺乏基于此指标的测试样本生成方法.因此,提出了一种意外充分性引导的深度神经网络测试样本生成方法,首先,筛选对于决策结果贡献较大的重要神经元,以其输出值为特征,改进意外充分性指标;其次,基于测试样本的意外充分性度量筛选具有揭错能力的种子样本;最后,利用覆盖引导的模糊测试思想,将测试样本的意外充分性值和DNN模型预测的类别概率差异作为联合优化目标,利用梯度上升算法计算扰动,迭代生成测试样本.为了验证所提方法的有效性,选取5个DNN模型作为被测对象,涵盖4种不同的图像数据集,实验结果表明,改进的意外充分性指标能够有效捕捉异常的测试样本,同时减少计算时间开销.在测试样本生成方面,与方法DeepGini和RobOT相比,基于所提的种子样本选择策略生成的衍生测试集的意外覆盖率最高提升了5.9个百分比和15.9个百分比.相比于方法DLFuzz和DeepXplore,所提方法的意外覆盖率最高提升了26.5个百分比和33.7个百分比.

关键词：软件测试测试样本生成测试覆盖深度神经网络意外充分性

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

基于DNN模型输出差异的测试输入优先级方法

引用

计算机科学 2024年第S1期51卷 818-825页

作者：朱进陶传奇郭虹静南京航空航天大学计算机科学与技术学院南京210016 高安全系统的软件开发与验证技术工信部重点实验室南京210016 计算机软件新技术国家重点实验室南京210023 软件新技术与产业化协同创新中心南京210016

深度神经网络测试需要大量的测试数据来保证DNN的质量,但大多数测试输入缺乏标注信息,而且对测试输入进行标注会带来高昂的人工代价。为了解决标注成本的问题,研究人员提出了测试输入优先级方法,筛选高优先级的测试输入进行标注。然而,... 详细信息

深度神经网络测试需要大量的测试数据来保证DNN的质量,但大多数测试输入缺乏标注信息,而且对测试输入进行标注会带来高昂的人工代价。为了解决标注成本的问题,研究人员提出了测试输入优先级方法,筛选高优先级的测试输入进行标注。然而,大多数优先级方法都受到有限情景的影响,例如难以筛选出高置信度的误分类输入。为了应对上述挑战,文中将差分测试技术应用于测试输入优先级,并提出了基于DNN模型输出差异的测试输入优先级方法(DeepDiff)。DeepDiff首先构建一个与原始模型具有相同功能的差分模型,然后计算测试输入在原始模型与差分模型之间的输出差异,最后为输出差异较大的测试输入分配更高的优先级。在实验验证中,我们对4个广泛使用的数据集和相应的8个DNN模型进行了研究。实验结果表明,在原始测试集上,DeepDiff的有效性比基线方法平均高出13.06%,在混合测试集上高出39.69%。

关键词：深度神经网络测试测试输入优先级差分测试模型输出差异

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

垂直裂隙对黄土边坡降雨入渗特征控制

引用

兰州工业学院学报 2024年第1期31卷 95-99页

作者：赵兴辰陶传奇辽宁石油化工大学土木工程学院辽宁抚顺113001

为研究降雨条件下坡面垂直裂隙入渗对黄土边坡影响,依据西北地区地质资料,采用有限元软件Geosdtudio中Seep/W模块建立有垂直裂隙的黄土边坡模型,针对降雨条件下黄土边坡坡面含垂直裂隙进行数值分析。结果表明:裂隙对黄土坡体渗流场、位... 详细信息

为研究降雨条件下坡面垂直裂隙入渗对黄土边坡影响,依据西北地区地质资料,采用有限元软件Geosdtudio中Seep/W模块建立有垂直裂隙的黄土边坡模型,针对降雨条件下黄土边坡坡面含垂直裂隙进行数值分析。结果表明:裂隙对黄土坡体渗流场、位移场影响较大,裂隙是雨水入渗的优势通道,雨水通过裂隙底部和侧壁迅速渗透到周围土壤,并向四周扩散;垂直裂隙的位置会导致土体的体积含水率在不同位置上产生差异,距裂隙1 m处裂隙左侧的土体体积含水率比右侧多2%,而裂隙上部的土体体积含水率比下部多1%;由于土体重力及裂隙角度,裂隙在y方向上的影响更为显著,裂缝的存在会导致土体内部的应力重新分布,导致黄土边坡的滑坡变形。

关键词：黄土滑坡垂直裂隙数值模拟

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

Code line generation based on deep context-awareness of onsite programming

引用

Science China(Information Sciences) 2020年第9期63卷 64-66页

作者： chuanqi tao Panpan BAO Zhiqiu HUANG College of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Ministry Key Laboratory for Safety-Critical Software Development and Verification Nanjing University of Aeronautics and Astronautics National Key Laboratory for Novel Software Technology Nanjing University

Dear editor,Intelligent code generation has become an essential research task to accelerate modern software development. To facilitate effective code generation for programming languages, numerous approaches have been... 详细信息

关键词： Onsite Programming code line deep context-awareness quality assurance re-ranking

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Adsorption Mechanism and Kinetic Characterization of Bituminous Coal under High Temperatures and Pressures in the Linxing-Shenfu Area

引用

Acta Geologica Sinica(English Edition) 2020年第2期94卷 399-408页

作者： tao chuanqi WANG Yanbin LI Yong NI Xiaoming GAO Xiangdong School of Mining Engineering Liaoning Shihua UniversityFushun 113001LiaoningChina Liaoning Key Lab of Petro-chemical Special Building Materials College of Geoscience and Surveying Engineering China University of Mining and TechnologyBeijing 100083China School of Energy Science and Engineering Henan Polytechnic UniversityJiaozuo 454000ShangdongChina School of Earth Science.East China University of Technology NanchangJiangxi 30013.China

The majority of coalbed methane(CBM) in coal reservoirs is in adsorption states in coal matrix pores. To reveal the adsorption behavior of bituminous coal under high-temperature and high-pressure conditions and to discuss the microscopic control mechanism affecting the adsorption characteristics, isothermal adsorption experiments under hightemperature and high-pressure conditions, low-temperature liquid nitrogen adsorption-desorption experiments and CO2 adsorption experiments were performed on coal samples. Results show that the adsorption capacity of coal is comprehensively controlled by the maximum vitrinite reflectance(Ro, max), as well as temperature and pressure conditions. As the vitrinite reflectance increases, the adsorption capacity of coal increases. At low pressures, the pressure has a significant effect on the positive effect of adsorption, but the effect of temperature is relatively weak. As the pressure increases, the effect of temperature on the negative effect of adsorption gradually becomes apparent, and the influence of pressure gradually decreases. Considering pore volumes of pores with diameters of 1.7-100 nm, the peak volume of pores with diameters 10-100 nm is higher than that from pores with diameters 1.7-10 nm, especially for pores with diameters of 40-60 nm, indicating that pores with diameters of 10-100 nm are the main contributors to the pore volume. The pore specific surface area shows multiple peaks, and the peak value appears for pore diameters of 2-3 nm, indicating that this pore diameter is the main contributor to the specific surface area. For pore diameters of 0.489-1.083 nm, the pore size distribution is bimodal, with peak values at 0.56-0.62 nm and 0.82-0.88 nm. The adsorption capability of the coal reservoir depends on the development degree of the supermicroporous specific surface area, because the supermicroporous pores are the main contributors to the specific pore area. Additionally, the adsorption space increases as the adso

关键词： coalbed methane pressure and temperature energy nanoporosity Ordos Basin

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

页岩气运移证据及其动态富集模式——以四川盆地南部深层页岩气为例

引用

天然气工业 2024年第5期44卷 29-44页

作者：缪欢姜振学吴建发伍秋姿石学文邓泽唐相路吴伟陶传奇郑洪扬油气资源与工程全国重点实验室•中国石油大学(北京) 中国石油大学(北京)非常规油气科学技术研究院中国石油西南油田公司页岩气研究院中国石油勘探开发研究院中国石油集团非常规油气重点实验室辽宁石油化工大学土木工程学院

页岩气存在运移现象,但页岩气运移现象对页岩气富集的影响尚不明确。为了查明深层页岩气运移证据及其富集模式,以四川盆地南部下志留统龙马溪组深层页岩气藏为例,基于页岩气藏天然气地球化学特征、赋存于顺层低角度裂缝中方解石脉包裹... 详细信息

页岩气存在运移现象,但页岩气运移现象对页岩气富集的影响尚不明确。为了查明深层页岩气运移证据及其富集模式,以四川盆地南部下志留统龙马溪组深层页岩气藏为例,基于页岩气藏天然气地球化学特征、赋存于顺层低角度裂缝中方解石脉包裹体特征、储层孔隙结构,查明了页岩气运移通道及运移能力,并结合典型气藏解剖,划分了龙马溪组页岩气动态富集模式。研究结果表明:①页岩气藏流体势场指示运移方向与气体组分指示方向一致,表明页岩气存在运移现象,且赋存于顺层裂缝中的流体包裹体揭示了研究区龙马溪组页岩气存在2期运移,分别发生在生烃高峰和后期抬升阶段;②现今研究区龙马溪组页岩储层存在满足页岩气运移的孔隙,且龙马溪组页岩孔隙以满足菲克扩散的孔隙为主,其次为满足滑脱渗流的孔隙和满足达西渗流的孔隙;③页岩气运移对页岩气富集具有重要的影响,研究区可划分出高抬升过渡带富集型、断裂散失背斜过渡带富集型、断裂散失向斜核部富集型、高部位富集型、弱运移能力断裂散失型5种页岩气动态富集模式。结论认为,在地质历史时期,页岩气存在运移现象,多期次的运移现象决定了现今的页岩气富集程度与富集区的优选。

关键词：四川盆地南部下志留统龙马溪组深层页岩气页岩气运移动态富集模式

来源：

维普期刊数据库博看期刊

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

Palladium(Ⅱ)-Catalyzed Markovnikov Hydroalkynylation of Unactivated Terminal Alkenes

引用

Chinese Journal of Chemistry 2024年第1期42卷 29-34页

作者： chuanqi Hou Pinhong Chen Guosheng Liu Sstate Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical SynthesisCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China Chang-Kung Chuang Institute East China Normal UniversityShanghai 200062China

Alkynes are versatile synthons in organic synthesis,as well as important structural moieties in bioactive ***,transition metal-catalyzed hydroalkynylation of alkenes has been developed with reactive alkenes and alkenes bearing directing ***,the regioselective hydroalkynylation of simple alkenes is still ***,we have developed a palladium-catalyzed Markovnikov hydroalkynylation of unactivated terminal alkenes,which provides an efficient approach for the synthesis of branched alkynyl compounds under mild *** reaction features excellent functional group tolerance,good reaction yields and excellent ***,the asymmetric hydroalkynylation reaction has also been achieved with moderate enantioselectivity by introducing a sterically bulky chiral Pyox ligand.

关键词： Palladium catalysis Alkynylpalladation Unactivated terminal alkenes Markovnikov hydroalkynylation

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

A Novel Tracking-by-Detection Method with Local Binary Pattern and Kalman Filter

引用

Journal of Harbin Institute of Technology(New Series) 2018年第3期25卷 74-87页

作者： Zhongli Wang Chunxiao Jia Baigen Cai Litong Fan chuanqi tao Zhiyi Zhang Yinling Wang Min Zhang Guoyan Lyu School of Electronics and Information Engineering Beijing Jiaotong University CSR Qindao Sifang Co. Ltd.

Tracking-Learning-Detection( TLD) is an adaptive tracking algorithm,which tracks by learning the appearance of the object as the video progresses and shows a good performance in long-term tracking *** our experiments show that under some scenarios,such as non-uniform illumination changing,serious occlusion,or motion-blurred,it may fails to track the object. In this paper,to surmount some of these shortages,especially for the non-uniform illumination changing,and give full play to the performance of the tracking-learning-detection framework, we integrate the local binary pattern( LBP) with the cascade classifiers,and define a new classifier named ULBP( Uniform Local Binary Pattern) classifiers. When the object appearance has rich texture features,the ULBP classifier will work instead of the nearest neighbor classifier in TLD algorithm,and a recognition module is designed to choose the suitable classifier between the original nearest neighbor( NN) classifier and the ULBP classifier. To further decrease the computing load of the proposed tracking approach,Kalman filter is applied to predict the searching range of the tracking object.A comprehensive study has been conducted to confirm the effectiveness of the proposed algorithm (TLD _ULBP),and different multi-property datasets were used. The quantitative evaluations show a significant improvement over the original TLD,especially in various lighting case.

关键词： Tracking-Learning-Detection (TLD) local binary pattern (LBP) Kalman filter

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：