检索结果-南通市图书馆

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

岩心矿物成分智能识别技术探索

中阿科技论坛（中英文） 2024年第7期 75-79页

作者：姚皓骞黄瑞田榆杰中国地质大学(北京)地球科学与资源学院北京100083 清华四川能源互联网研究院四川成都610200

随着科学技术的不断发展,岩石学研究的方法和手段也不断丰富和更新。岩心矿物组分鉴定是岩石骨架、孔隙组合、填隙物类型等微观储层研究的主要依据,但由于岩心分析工作量大,传统分析方法面临效率低、精准度低、专家依赖度高、人才紧缺... 详细信息

随着科学技术的不断发展,岩石学研究的方法和手段也不断丰富和更新。岩心矿物组分鉴定是岩石骨架、孔隙组合、填隙物类型等微观储层研究的主要依据,但由于岩心分析工作量大,传统分析方法面临效率低、精准度低、专家依赖度高、人才紧缺等挑战。文章在总结分析岩心矿物成分识别相关技术的基础上,利用语义分割网络模型,探索验证了一种基于岩心薄片图像的矿物成分特征识别技术,结合实例实现了矿物成分自动识别和组分占比统计。

关键词：岩石薄片矿物成分语义分割卷积神经网络智能识别

综合物探方法在张家口地区矽卡岩型铁矿的找矿应用

在线全文

学校读者我要写书评

暂无评论

地质装备 2024年第3期25卷 26-31页

作者：田玉杰贾晓鹏王文文河北省地质矿产勘查开发局第九地质大队河北邢台054000

矽卡岩型铁矿是一种重要的矿产资源,具有较高的开采价值。随着找矿理论和找矿方法的不断进步,张家口地区具有巨大的找矿的潜力。本次在以往工作的基础上,利用最新的1∶25 000航磁图圈定成矿的有利位置,开展地面高精度磁测和数据处理解... 详细信息

矽卡岩型铁矿是一种重要的矿产资源,具有较高的开采价值。随着找矿理论和找矿方法的不断进步,张家口地区具有巨大的找矿的潜力。本次在以往工作的基础上,利用最新的1∶25 000航磁图圈定成矿的有利位置,开展地面高精度磁测和数据处理解译工作,对磁异常进行了详细解剖,确定了钻孔位置,并利用井中磁测寻找井旁、井底盲矿体,指导钻机钻进。通过“航–地–井”结合的综合物探方法,借鉴邯邢式铁矿床的找矿经验进行地球物理模型的建立和反演处理,更加准确地确定矿体的位置、形状和规模,为地质找矿提供重要的技术支持。同时,钻探结果也证明了综合物探方法的有效性。本次工作资源量增加1800余万吨,发现的矽卡岩型矿床是张家口地区,甚至是河北省内矽卡岩型接触交代式铁矿的一个新类型。

关键词：综合物探矽卡岩型铁矿航磁

维普期刊数据库博看期刊

Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2019年第1期27卷 54-62页

作者： Nouman Ahmad yujie tian Bona Lu Kun Hong Haifeng Wang Wei Wang State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of Sciences University of Chinese Academy of Sciences Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry Huaiyin Institute of Technology

The EMMS/bubbling model originally proposed for fluidization of monodisperse particles is extended to fluidization of binary particle mixture in this *** dense and dilute phases are considered to comprise of two types of particles differing in size and/or *** equations and the stability condition are then formulated and solved by using an optimization numerical *** effects of bubble diameter are first investigated and a suitable bubble diameter correlation is *** validation for steady state behavior shows the extended model can fairly capture the overall hydrodynamic behaviors in terms of volume fraction of bubbles and average bed voidage for both monodisperse and binary particle *** encourages us to integrate this model with CFD for more validations in the future.

关键词： EMMS Binary mixture Fluidization Mesoscale structure

Identification of a novel cDC2-committed progenitor within mouse common dendritic cell progenitor population

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2022年第4期13卷 302-307页

作者： yujie tian Xueheng Guo Tao Wu Kuangyu Fei Li Wu Institute for Immunology Tsinghua-Peking Center for Life SciencesSchool of MedicineTsinghua UniversityBeijing 100084China Joint Graduate Program of Peking-Tsinghua-National Institute of Biological Sciences School of Life SciencesTsinghua UniversityBeijing 100084China Beijing Key Laboratory for Immunological Research on Chronic Diseases Beijing 100084China National Education Examinations Authority Beijing 100084China

Dear Editor,Dendritic cells(DCs)are the most efficient professional antigen presenting cells that act as sentinels of the immune system and conduct vital functions in the initiation and regulation of innate and adaptive immunities(Wculek et al.,2020).In addition to being critical cellular components in pathogen clearance,DCs are promising targets for improved tumor immunotherapy,vaccine design,and intervention of autoimmune diseases(Nutt and Chopin,2020).DCs can be classified as plasmacytoid DCs(pDCs)and conventional DCs(cDCs)in both mouse and human(Anderson et al.,2018;Nutt and Chopin,2020).

关键词： progenitor committed professional

Resource-saving scheduling scheme for centralized target tracking in multiple radar system under automatic blanket jamming

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第5期37卷 349-362页

作者： Zhengjie LI yujie WEI Junwei XIE Haowei ZHANG Yu tian Air and Missile Defense College Air Force Engineering UniversityXi’an 710051China Air Force Xi’an Flying College Xi’an 710300China Air and Missile Defense Institute Air Force Research InstituteBeijing 100085China School of Economics and Management Beihang UniversityBeijing 100191China

This paper investigates the problem of Joint Radar Node Selection and Power Allocation(JRNSPA)in the Multiple Radar System(MRS)in the blanket jamming *** radar node independently tracks moving target and subsequently transmits the raw observation data to the fusion center,which formulates a centralized tracking network *** order to establish a practical blanket jamming environment,we suppose that each target carries the self-defense jammer which automatically implements blanket jamming to the radar nodes that exceed the preset interception ***,the Predicted Conditional Cramer-Rao Lower Bound(PC-CRLB)is derived and utilized as the tracking accuracy *** at ensuring both the tracking performance and the Low Probability of Intercept(LPI)performance,the resource-saving scheduling model is formulated to minimize the transmit power consumption while meeting the requirements of tracking ***,the Modified Zoutendijk Method Of Feasible Directions(MZMFD)-based two-stage solution technique is adopted to solve the formulated non-convex optimization *** results show the effectiveness of the proposed JRNSPA scheme.

关键词： Multiple Radar System(MRS) Centralized target tracking Resource scheduling Blanket jamming Low Probability of Intercept(LPI)

个案管理模式在前列腺癌根治术患者中的应用效果及对自我护理能力的影响

在线全文

学校读者我要写书评

暂无评论

临床医学研究与实践 2024年第6期9卷 132-135页

作者：蔡杨萍任宝明李建龙李焕田玉杰田溪白婕白静西北大学附属医院·西安市第三医院陕西西安710021 西安医学院第二附属医院陕西西安710038

目的探讨个案管理模式在前列腺癌根治术患者中的应用效果及对自我护理能力的影响。方法选取2020年1月至2021年12月接受前列腺癌根治术治疗的90例患者为研究对象,按随机数字表法将其分为对照组和观察组,每组45例。对照组实施常规护理干预... 详细信息

目的探讨个案管理模式在前列腺癌根治术患者中的应用效果及对自我护理能力的影响。方法选取2020年1月至2021年12月接受前列腺癌根治术治疗的90例患者为研究对象,按随机数字表法将其分为对照组和观察组,每组45例。对照组实施常规护理干预,观察组实施个案管理模式干预。比较两组的干预效果。结果观察组的术后肠功能恢复时间短于对照组,术后最大尿流率(Qmax)高于对照组,术后残余尿量(PVR)、术后前列腺特异性抗原水平低于对照组(P<0.05)。术后3、6个月,观察组的尿控总有效率高于对照组(P<0.05)。随访6个月,观察组的自我护理能力量表(ESCA)各维度评分及总分高于对照组(P<0.05)。结论个案管理模式可提高前列腺癌根治术患者的尿控能力,有效降低尿失禁风险,还可提高自我护理能力,促进术后恢复。

关键词：前列腺癌根治术个案管理模式自我护理能力

黑水虻虫沙与菌糠混合土对甘薯生长发育及土壤性状的影响

在线全文

学校读者我要写书评

暂无评论

现代农业科技 2024年第7期 28-32页

作者：周明明吉志新毕经鑫蔡爱军田玉杰河北科技师范学院农学与生物科技学院河北秦皇岛066004 秦皇岛市经济昆虫开发利用工程技术研究中心河北秦皇岛066004 河北科技师范学院海洋资源与环境学院河北秦皇岛066004

以烟薯25甘薯为试验材料,设置盆栽试验,研究了添加不同配比的黑水虻虫沙和菌糠混合土对甘薯产量与品质产生的影响以及对栽植甘薯土壤性状及营养含量的影响。结果表明,60%土壤+20%黑水虻虫沙+20%菌糠处理甘薯的结薯数、单薯重、分枝数、... 详细信息

以烟薯25甘薯为试验材料,设置盆栽试验,研究了添加不同配比的黑水虻虫沙和菌糠混合土对甘薯产量与品质产生的影响以及对栽植甘薯土壤性状及营养含量的影响。结果表明,60%土壤+20%黑水虻虫沙+20%菌糠处理甘薯的结薯数、单薯重、分枝数、叶绿素含量等都有明显的增长,土壤孔隙度、有效磷、速效钾和有机质含量均有显著的提高,因而黑水虻虫沙可以作为有机肥使用,并且会对作物生长发育产生积极的影响。根据各项指标综合考虑,以60%土壤+20%黑水虻虫沙+20%菌糠处理效果最佳,在各方面都优于其他处理。

关键词：甘薯黑水虻虫沙菌糠生长发育土壤性状

Bioinspired sensing-memory-computing integrated vision systems: biomimetic mechanisms, design principles, and applications

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第5期67卷 5-27页

作者： yujie HUANG Yinlong TAN Yan KANG Yabo CHEN Yuhua TANG tian JIANG Institute for Quantum Information and State Key Laboratory of High Performance Computing College of Computer National University of Defense Technology College of Advanced Interdisciplinary Studies National University of Defense Technology Institute for Quantum Science and Technology College of ScienceNational University of Defense Technology

With the explosion of sensory data in the Internet of Things(Io T) era, conventional machine vision systems are becoming increasingly difficult to meet the requirements of high efficiency, low energy consumption, and low latency due to their inherent shortcomings of separate sensing, memory, and computing units. Inspired by the retina and neuromorphic computing, the sensing-memory-computing integrated vision system(SMCVS) that features low power consumption, low latency, and high parallelism has been considered a promising technology to surpass the von Neumann architecture and realize strong artificial ***, novel materials like two-dimensional semiconductors and quantum dots with novel optoelectronic performance provide hardware carriers for implementing integrated sensing-memory-computing architectures,attracting considerable attention. This paper reviews the recent research progress in bioinspired vision systems in terms of biomimetic mechanisms, design principles, computational architectures, and ***, the biomimetic mechanisms are illustrated to guide the design of high-performance artificial visual perception systems. Then the research progress of optoelectronic-synapse-based bioinspired vision systems in the device principles and applications including image filtering, color recognition, visual adaptation, and motion detection are summarized. Finally, the challenges and future developing directions of the SMCVS are provided regarding bionic application, architecture design, and device fabrication.

关键词： sensing-memory-computing architecture neuromorphic computing retinomorphic device image recognition visual system

Morphological design and tunable mechanical properties of 3D spinodal membrane structures:adaptive coarse-grained modelling

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2024年第8期40卷 166-178页

作者： yujie Xiang Jie tian Keke Tang Xianqiao Wang Zheng Zhong School of Aerospace Engineering and Applied Mechanics Tongji UniversityShanghai200092China Key Laboratory of AI-aided Airworthiness of Civil Aircraft Structures Civil Aviation Administration of ChinaTongji UniversityShanghai200092China School of School of Environmental CivilAgricultural and Mechanical EngineeringUniversity of GeorgiaAthensGA30602USA School of Science Harbin Institute of TechnologyShenzhen518055China

The spinodal decomposition method emerges as a promising methodology,showcasing its potential in exploring the design space for metamaterial ***,spinodal structures design is still largely limited to regular structures,due to their relatively easy parameterization and *** predicting the mechanical properties of 3D spinodal membrane structure remains a challenge,given that the features of the membrane necessitate adaptive mesh through the modelling *** paper proposes an integrated approach for morphological design with customized mechanical properties,incorporating the spinodal decomposition method and adaptive coarse-grained modeling,which can produce various morphologies such as lamellar,columnar,and cubic ***-periodic parameterβand orientational parameterΘ(θ_(1),θ_(2),θ_(3))are identified to achieve the optimal goal of anisotropic mechanical *** analysis is conducted to reveal the correlation between the customized spinodal structure and mechanical *** work provides an integrated approach for morphological variation and tuning mechanical properties,paving the way for the design and development of customized functional materials similar to 3D spinodal membrane structures.

关键词： Morphological design Spinodal decomposition Adaptive coarse-grained modeling Mechanical properties Parametric design