检索结果-南通市图书馆

Exhumation and Preservation of the Yangchuling Porphyry W-Mo Deposit in the Jiangnan Tungsten Ore Belt,South China:Insights from(U-Th)/He and Fission Track Dating

引用

Journal of Earth Science 2025年第1期36卷 46-56页

作者： Yue Sun Ying Wang Jianzhang Pang Samuel C.Boone Minting Wu Chongjian shao Wei Liu Jiangxi Provincial Key Laboratory of Genesis and Prospect for Strategic Minerals School of Earth ScienceEast China University of TechnologyNanchang330013China Institute of Geology China Earthquake Administration Beijing100029China School of Geography Earth and Atmospheric Sciences The University of MelbourneMelbourneVIC3010Australia Department of Earth Sciences The University of AdelaideAdelaideSA5005Australia Jiangxi DuChang Jinding Tungsten CO. Ltd.Jiujiang332611China

The Yangchuling porphyry W-Mo deposit(YPWD),located in the Jiangnan porphyryskarn tungsten ore belt,is one of the most important and large-scale porphyry W-Mo deposits in South *** previous zircon U-Pb and molybdenite Re-Os data suggest that Yangchuling WMo ore bodies formed almost simultaneously with granodiorite and monzogranitic porphyry at~150–144 ma,their post emplacement history remains poorly understood,making their preservation status at depth *** this paper,new zircon and apatite(U-Th)/He and apatite fission track(ZHe,AHe and AFT,respectively)data of one hornfels and five intrusive rocks from a 1000-meter borehole are ***,together with new inverse thermal history models and previous geochronological data,help elucidate the post-diagenetic exhumation history and preservation status of the Yangchuling porphyry W-Mo *** general,ZHe and AHe ages decrease gradually from the near surface downwards and have relatively little intra-sample variation,ranging from 133 to 73ma and 67 to 25 ma,*** four granodiorites yield similar AFT ages that range from 63 to 55 ma with mean track lengths varying from 12.2±0.7 to 12.6±0.5μ*** history modelling indicates that the Yangchuling ore district experienced slow,monotonic cooling since the ***-depth relationships are interpreted as recording~3.7±0.8 km of Cretaceous-recent exhumation in response to regional extension throughout South China thought to have been driven by subduction retreat of the Paleo-Pacific *** of estimated net exhumation and previous metallogenic depth of~4–5 km suggests that W-Mo ore bodies could still exist at depths of up to~1.3±0.8 km relative to Earth surface in the YPWD *** of the YPWD is attributed to the limited amount of regional denudation during the Late Cretaceous and Cenozoic.

关键词： (U-Th)/He fission track ore preservation thermochronology Yangchuling porphyry W-Mo deposit

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

Guidelines for standard operation of imaging modalities in orbital diseases (2024)

引用

International Journal of Ophthalmology(English edition) 2025年第1期18卷 51-66页

作者： Yi shao Jian-Min ma Xiao-Ming Huang Expert Workgroup of Guidelines for the useof imaging equipment in orbital diseases(2024) Ophthalmic Imaging and IntelligentMedicine Branch Chinese Medicine Education Association Ocular Oncology Committee of theOphthalmology Branch of the Chinese Medical Doctor Association Ophthalmology Committee ofInternational Association of Translational Medicine Chinese Ophthalmic Imaging Study Groups Department of Ophthalmology Shanghai General HospitalShanghai Jiao Tong University School of MedicineNational Clinical Research Center for Eye DiseasesShanghai 200080China Beijing Tongren Hospital Affiliated to Capital Medical University Beijing 100005China Sichuan Eye Hospital Chendu 610047Sichuan ProvinceChina 不详

Orbital disorders include conditions originating from the orbital bones,surrounding tissues,and post-orbital *** also include systemic ailments affecting the *** clinical symptoms make up the complex range of orbital *** these disorders mostly impact the orbital area instead of the intraocular compartment,there is little diagnostic usefulness for typical ophthalmic visual *** such,the vital instruments for diagnosing and evaluating orbital illnesses have become ophthalmic imaging modalities,including ocular ultrasonography(B-scan),computed tomography(CT),and magnetic resonance imaging(MRI).One way to improve the precision and promptness of diagnosing orbital diseases is to standardize the functioning of widely used imaging equipment and define the radiological features of orbital *** programs are crucial for the care of patients with orbital disorders since they considerably reduce the number of misdiagnoses and missed diagnoses in these *** underlying concepts,operational techniques,and normal and pathological imaging findings associated with common diagnostic tools for orbital illnesses are all thoroughly reviewed in this *** objective is to improve primary healthcare settings’diagnostic competence in the field of orbital pathology and to standardize procedures for diagnosing orbital disorders.

关键词： orbital disease ultrasonography computed tomography magnetic resonance imaging standardized operation

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

直接反射在线可视铁谱暗场显微成像特性分析

引用

西安交通大学学报 2025年第2期59卷 189-200页

作者：李博袁勋尹智吴伟邵军马富银西安石油大学机械工程学院西安710065 西安交通大学机械工程学院西安710049

为评估直接反射在线可视铁谱(OLVF)暗场显微成像特性,提出了一种磨粒暗场显微成像模型。基于朗伯余弦和光后向散射理论建立了直接反射OLVF显微成像系统的反射光辐照度叠加模型,以实现磨粒暗场显微成像质量的定量评价;仿真计算互补金属... 详细信息

为评估直接反射在线可视铁谱(OLVF)暗场显微成像特性,提出了一种磨粒暗场显微成像模型。基于朗伯余弦和光后向散射理论建立了直接反射OLVF显微成像系统的反射光辐照度叠加模型,以实现磨粒暗场显微成像质量的定量评价;仿真计算互补金属氧化物半导体(CMOS)像面的反差透视比,分析了光学倍率、油液衰减系数和后向散射角变化对磨粒暗场显微成像清晰度的影响规律,确定了磨粒暗场显微成像的最优光学倍率为2.2和油液衰减系数大于2.0;明确CMOS像面的反差透视比在0.210~0.846范围内变化,直接反射OLVF可通过暗场显微成像获得较高清晰度的磨粒图像,其磨粒探测精度约为10μm。磨粒图像采集实验测试结果表明:直接反射OLVF暗场显微成像不仅能够从油液衰减系数大于2.28的原油、柴油机油中可靠捕获磨粒视觉信息,而且可从油液衰减系数小于2.0的液压油、齿轮油中获取磨粒谱片图像,解决了不同油液中金属磨粒探测问题,为在线监测采油装备磨损提供了可能性。

关键词：直接反射在线可视铁谱暗场显微成像反差透视比原油磨粒

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

Longitudinal landscape of immune reconstitution after acute SARS-CoV-2 infection at single-cell resolution

引用

Science Bulletin 2025年第3期70卷 323-327页

作者： Lili Ren Yiwei Liu Yeming Wang Chao Wu Li Guo Lan Chen Xinming Wang Yan Xiao Lixue Huang Jingchuan Zhong Jiacheng Yao Lu Liu Hui Li Ying Wang Yongchao ma Yichunzi Zhang Lin di Tao Dong Julian Knight Jianbin Wang Yanyi Huang Bin Cao Xianwen Ren Jianwei Wang National Health Commission Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory National Institute of Pathogen BiologyChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 102629China Key Laboratory of Respiratory disease Pathogenomics Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China State Key Laboratory of Respiratory Health and Multimorbidity Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100029China Department of Pulmonary and Critical Care Medicine Institute of Respiratory Medicine of Chinese Academy of Medical ScienceNational Center for Respiratory MedicineCenter of Respiratory MedicineNational Clinical Research Center for Respiratory DiseasesChina-Japan Friendship HospitalBeijing 100029China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China Biomedical Pioneering Innovation Center(BIOPIC) Beijing Advanced Innovation Center for Genomics(ICG)College of Chemistryand Peking-Tsinghua Center for Life SciencesPeking UniversityBeijing 100871China MRC Human Immunology Unit MRC Weatherall Institute of Molecular MedicineRadcliffe Department of MedicineThe University of OxfordOxford OX39DSUK Chinese Academy of Medical Science(CAMS)Oxford Institute(COI) University of OxfordOxford OX39DSUK Wellcome Centre for Human Genetics University of OxfordOxford OX39DSUK School of Life Sciences Tsinghua-Peking Center for Life SciencesTsinghua UniversityBeijing 100084China Beijing Advanced Innovation Center for Structural Biology(ICSB) Tsinghua UniversityBeijing 100084China Chinese Institute for Brain Research(CIBR) Beijing 102206China Institute for Cell Analysis Shenzhen Bay LaboratoryShenzhen 518107China Tsinghua University-Peking University Joint Center for Life Sciences Beijing 100084China Biomedical Pioneering Innovation Center(BIOPIC) Peking UniversityBeijing 100871China Changping Laboratory Beijing 102206China

The long-term consequences of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection,known as the post-acute sequelae of COVID-19(PASC),have been a growing concern.A significant proportion of COVID-19 patients experience persistent health issues even six to twelve months after recovering from acute infection[1],[2],[3],[4].Therefore,understanding the immune reconstitution process and identifying the molecular and cellular mechanisms underlying PASC is crucial.

关键词： landscape consequences acute

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 study of sequence stratigraphy of the Early Cretaceous coal-bearing series in the southeastern Songliao Basin, NE China

引用

International Journal of Coal Science & Technology 2020年第2期7卷 263-272页

作者： Kai shao Longyi shao Dongmin ma Dongdong Wang Shuai Wang di Gao College of Resources and Environments Xi’an University of Science and TechnologyXi’an710054ShaanxiChina State Key Laboratory of Coal Resources and Safe Mining and College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing10008China Shannxi Coalbed Methane Development Company Limited Xi’an710119ShaanxiChina College of Geological Science and Engineering Shandong University of Science and TechnologyQingdao266590ShandongChina College of Resources and Environments Henan Polytechnic UniversityJiaozuo454000HenanChina

The Early Cretaceous is an important coal accumulation period in *** coal resources were formed in the southeastern margin of Songliao *** stratigraphy and coal accumulation of the Early Cretaceous in the southeastern margin of Songliao Basin have been studied on the basis of extensive outcrop and borehole *** on regional unconformity,basal erosional surfaces of incised valley fills,and abrupt depositional facies-reversal surface,six sequence boundaries have been identified,which subdivide the Early Cretaceous coal-bearing series into 5 third-order *** I corresponds to Huoshiling Formation,sequences II and III correspond to member I and member II of Shahezi *** IV and V correspond to member I and member II of Yingcheng *** I developed at the initial subsiding stage,sequence II and III developed during the stable subsiding stage,while sequence IV and V developed during the basin shrinkage *** major coal seams were developed in the sequence II and III,which ensured the relative balance between the increase rate of the accommodation space and the rate of peat accumulation for a longer period,thus forming a thick coal seam.

关键词： Songliao Basin Sequence stratigraphy Depositional system Coal accumulation

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

高等教育重点建设中的学校分层困局及其改革

引用

华东师范大学学报(教育科学版) 2025年第3期43卷 1-11页

作者：朱军文马银琦邵玲芝华东师范大学教育学部上海200062 浙江师范大学高质量教育发展研究院浙江金华321004

分类推进高校改革,实现从分层发展向分类发展转变,是进一步全面深化改革,加快建设教育强国的重要任务。如何优化我国高等教育重点建设政策对高校分层现象的伴生影响,破解其可能存在的消极效应,是亟待研究的问题。研究通过系统梳理高等... 详细信息

分类推进高校改革,实现从分层发展向分类发展转变,是进一步全面深化改革,加快建设教育强国的重要任务。如何优化我国高等教育重点建设政策对高校分层现象的伴生影响,破解其可能存在的消极效应,是亟待研究的问题。研究通过系统梳理高等教育重点建设的发展历程,结合资源支持、重点学科集聚、入学机会贡献等维度,刻画了重点建设政策对高校分层现象的影响,并据此分析了深层次的原因,提出了针对性建议。我国高等教育重点建设在集中力量支持一部分大学、一部分学科迈向世界一流目标的过程中,高等教育系统内学校之间分层现象有所加剧,学校层次结构从梯型演化为金字塔型;高水平学科的学校分布趋于集中;高等教育重点建设政策的身份固化现象可能设定了未入选学校发展的“天花板”,资源流动中的“马太效应”,高校评价中存在的以层次表征水平、以规模表征实力、以排名表征进步等现象是造成学校分层困局的多方面因素。建议推动“重点建设”向“共同发展”转变,大幅度增加高等教育重点建设学校范围、取消以学科为对象的重点建设支持方式,完善以学校类型为基础、以质量和贡献为标准的分类评价体系,是破解高等教育重点建设过程中学校分层困局的可选举措。

关键词：高等教育重点建设分层分类发展

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

热效应作用下P波入射非饱和土自由场地地震响应研究

引用

岩土工程学报 2025年第3期47卷 569-579页

作者：马强杨奕琪周凤玺邵生俊青海大学土木工程学院青海西宁810016 西安理工大学岩土工程研究所陕西西安710048 兰州理工大学土木工程学院甘肃兰州730050

基于单相热弹性介质和非饱和多孔热弹性介质中波的传播理论,建立了平面P波入射下非饱和土自由场地模型,采用亥姆霍兹矢量分解原理,对热效应作用下非饱和土自由场地中的波场进行分析,获得了热效应作用下平面P波入射非饱和土自由场地地震... 详细信息

基于单相热弹性介质和非饱和多孔热弹性介质中波的传播理论,建立了平面P波入射下非饱和土自由场地模型,采用亥姆霍兹矢量分解原理,对热效应作用下非饱和土自由场地中的波场进行分析,获得了热效应作用下平面P波入射非饱和土自由场地地震响应的解析解答。通过数值计算,分析了热传导系数、介质温度、热膨胀系数等热物性参数对非饱和土自由场地地震响应所产生的影响规律。研究结果表明:考虑热效应和不考虑热效应两种理论模型下所得到的地表位移放大系数有着明显差异;水平位移放大系数随着热传导系数的增大而逐渐增大,但竖向位移放大系数几乎不发生变化;随着热膨胀系数的增大,水平位移放大系数逐渐增大,竖向位移放大系数逐渐减小;随着介质温度的增大,水平位移放大系数逐渐减小,竖向位移放大系数逐渐增大;此外,随着饱和度的增大,水平位移放大系数逐渐减小,竖向位移放大系数逐渐增大,说明土体中气相的存在对地表位移放大系数有着显著的影响。

关键词：非饱和多孔热弹性介质自由场地地震响应热物性参数平面P波

来源：

维普期刊数据库

同方期刊数据库

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

DoTI：面向数据业务的TEE融合技术研究

引用

通信学报 2025年第02期46卷 18-28页

作者：马承彦卢笛马鑫迪习宁王锦锦马建峰西安电子科技大学网络与信息安全学院西安电子科技大学计算机科学与技术学院伯明翰大学计算机科学学院

协同平台面临系统和数据安全的挑战，可信执行环境（TEE）通过硬件隔离技术实现基于明文的机密计算，确保代码和数据的机密性与完整性。然而，异构的TEE技术使得同一份代码或程序无法直接在不同TEE架构中直接运行并相互提供可信的数据... 详细信息

协同平台面临系统和数据安全的挑战，可信执行环境（TEE）通过硬件隔离技术实现基于明文的机密计算，确保代码和数据的机密性与完整性。然而，异构的TEE技术使得同一份代码或程序无法直接在不同TEE架构中直接运行并相互提供可信的数据操作接口，导致跨TEE场景下任务协同执行的安全问题。为了解决上述问题，提出一种基于数据操纵语言的TEE融合技术DoTI，从数据处理的业务层解决跨TEE的数据安全交互问题，并结合基于属性加密的密码学方法保持多TEE协同的隔离性。实验结果表明，在DoTI环境下迁移至TEE的数据库性能约为原始数据库的119.15%，且网络通信能力优于现有方案，能够满足协同平台数据共享的可用性和安全性要求。

关键词：协同平台可信执行环境数据操纵语言基于属性的加密

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

Ensemble deep transfer learning driven by multisensor signals for the fault diagnosis of bevel-gear cross-operation conditions

引用

Science China(Technological Sciences) 2021年第3期64卷 481-492页

作者： di ZiYang shao HaiDong XIANG JiaWei State Key Laboratory of Advanced Design and manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China College of Mechanical and Electrical Engineering Wenzhou UniversityWenzhou 325035China

The existing intelligent fault diagnosis techniques of bevel gear focus on single-sensor signal analysis under the steady operation *** this study,a new method is proposed based on ensemble deep transfer learning and multisensor signals to enhance the fault diagnosis adaptability and reliability of bevel gear under various operation ***,a novel stacked autoencoder(NSAE)is constructed using a denoising autoencoder,batch normalization,and the Swish activation ***,a series of source-domain NSAEs with multisensor vibration signals is ***,the good model parameters provided by the source-domain NSAEs are transferred to initialize the corresponding target-domain ***,a modified voting fusion strategy is designed to obtain a comprehensive *** multisensor signals collected under the different operation conditions of bevel gear are used to verify the proposed *** comparison results show that the proposed method can diagnose different faults in an accurate and stable manner using only one target-domain sample,thereby outperforming the existing methods.

关键词： ensemble deep transfer learning bevel-gear fault diagnosis novel stacked autoencoder multisensor signals modified voting fusion strategy

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

Dual-radiation-chamber coordinated overall energy efficiency scheduling solution for ethylene cracking process regarding multi-parameter setting and multi-flow allocation

引用

Chinese Journal of Chemical Engineering 2021年第6期34卷 180-197页

作者： di Meng Cheng shao Li Zhu Institute of Advanced Control Technology Dalian University of TechnologyDalian 116024China

Ethylene cracking process is the core production process in ethylene industry,and is paid more attention to reduce high energy *** of the interdependent relationships between multi-flow allocation and multi-parameter setting in cracking process,it is difficult to find the overall energy efficiency scheduling for the purpose of saving *** traditional scheduling solutions with optimal economic benefit are not applicable for energy efficiency scheduling issue due to the neglecting of recycle and lost energy,as well as critical operation parameters as coil outlet pressure(COP)and dilution *** addition,the scheduling solutions mostly regard each cracking furnace as an elementary unit,regardless of the coordinated operation of internal dual radiation chambers(DRC).Therefore,to improve energy utilization and production operation,a novel energy efficiency scheduling solution for ethylene cracking process is proposed in this ***,steam heat recycle and exhaust heat loss are considered in cracking process based on 6 types of extreme learning machine(ELM)based cracking models incorporating DRC operation and three operation parameters as coil outlet temperature(COT),COP,and dilution ratio according to semi-mechanism *** to provide long-term decision-making basis for energy efficiency scheduling,overall energy efficiency indexes,including overall output per unit net energy input(OONE),output-input ratio per unit net energy input(ORNE),exhaust gas heat loss ratio(EGHL),are designed based on input-output analysis in terms of material and energy ***,a multiobjective evolutionary algorithm based on decomposition(MOEA/D)is employed to solve the formulated multi-objective mixed-integer nonlinear programming(MOMINLP)*** validities of the proposed scheduling solution are illustrated through a case *** scheduling results demonstrate that an optimal balance between multi-flow allocation,multi-parameter setting,and D

关键词： Ethylene cracking process Energy efficiency scheduling Overall energy efficiency indexes Dual radiation chamber Multiple operation parameters Multiple energy flows

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：