检索结果-南通市图书馆

Characteristics of the Density and Magnetic Susceptibility of Rocks in Northern Borneo and their Constraints on the Lithologic Identification of the Mesozoic Rocks in the Southern South China Sea

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

Acta Geologica Sinica(English Edition) 2021年第1期95卷 280-293页

作者： TANG Huafeng ZHAO Zhigang TIAN Zhiwen LU Baoliang TANG Wu he kailun ZHU Chenxi WANG Pujun Key Laboratory of Mineral Resources Evaluation of Northeast Asia Ministry of Natural ResourcesChangchun 130061China CNOOC Research Institute Co. Ltd.Beijing 100028China College of Earth Sciences Jilin UniversityChangchun 130061China College of Geological Engineering and Geomatics Chang'an UniversityXi'an 710054China

Based on the volume magnetic susceptibility and specific gravity measurements and mineral and lithologic identification results for 540 samples,the rock type,density,and magnetic susceptibility of rocks from northern Borneo were analyzed,and the applicability of gravity and magnetic data to the lithologic identification of the Mesozoic strata in the southern South China Sea was assessed *** results show that there are 3 types and 25 subtypes of rocks in northern Borneo,mainly intermediate-mafic igneous rocks and exogenous clastic sedimentary rocks,with small amounts of endogenous sedimentary rocks,felsic igneous rocks,and metamorphic *** rocks that are very strongly-strongly magnetic and have high-medium densities are mostly igneous rocks,tuffaceous sandstones,and their metamorphic *** rocks that are weakly magnetic-non-magnetic and have medium-very low densities are mostly conglomerates,sandstones,siltstones,mudstones,and *** rocks that are weakly magnetic-diamagnetic and have highmedium densities are mostly limestones and siliceous *** Cenozoic rocks are characterized by low densities and medium susceptibilities;the Mesozoic rocks are characterized by medium densities and medium-high susceptibilities;and the pre-Mesozoic rocks are characterized by high densities and low *** on these results and the distribution characteristics of the various rock types,it was found that the pre-Mesozoic rocks produce weak regional gravity anomalies;the Mesozoic sedimentary rocks produce negative regional gravity anomalies;whereas the Mesozoic igneous rocks produce positive regional gravity anomalies;and the Cenozoic igneous rocks produce positive regional gravity *** regional high magnetic anomalies in the southern part of the South China Sea originate from the Mesozoic mafic igneous rocks and their metamorphic equivalents;and the regional medium magnetic anomalies may be produced by the felsic igneous rocks and their

关键词： density magnetic susceptibility Mesozoic Borneo South China Sea

重庆工业园区废弃物物流发展问题及政策措施建议

在线全文

学校读者我要写书评

暂无评论

物流技术 2014年第4期33卷 62-65页

作者：何开伦邓小翠重庆理工大学管理学院重庆400050

从理论上分析了工业园区废弃物物流系统结构,以典型工业园区为例阐述了重庆工业园区废弃物物流发展现状,分析了固废总量大、产业链培育程度低、再生资源业落后、废弃物处理企业积极性差等发展问题。最后提出推进园区废弃物物流联盟建设... 详细信息

从理论上分析了工业园区废弃物物流系统结构,以典型工业园区为例阐述了重庆工业园区废弃物物流发展现状,分析了固废总量大、产业链培育程度低、再生资源业落后、废弃物处理企业积极性差等发展问题。最后提出推进园区废弃物物流联盟建设、提高园区绿色供应链管理水平、建设园区废弃物耦合系统、加深产业链培育、推进企业固废综合利用、加快再生资源工业园建设等政策措施建议,供园区和企业管理者参考。

关键词：工业园区重庆工业固废废弃物物流绿色供应链

在线全文

学校读者我要写书评

暂无评论

工业园区废弃物物流系统发展激励机制研究

管理评论 2016年第1期28卷 169-178页

作者：何开伦李伟刘志学重庆理工大学管理学院重庆400054 华中科技大学管理学院武汉430074 重庆理工大学机械工程学院重庆400054

本文分析了工业园区废弃物物流系统的结构和特点,指出该系统具有显著的环境效益,政府应积极协调该系统建立工业固废物流联盟并强化企业间合作机制,对该系统产生的环境效益给予财政补贴;将园区废弃物物流系统简化为盟主企业,根据激励要... 详细信息

本文分析了工业园区废弃物物流系统的结构和特点,指出该系统具有显著的环境效益,政府应积极协调该系统建立工业固废物流联盟并强化企业间合作机制,对该系统产生的环境效益给予财政补贴;将园区废弃物物流系统简化为盟主企业,根据激励要求和条件构建政府-企业的委托代理激励模型,利用该模型分析园区废弃物物流系统发展激励机制并提出实施策略;以某工业园区废油处理为例,运用理论模型分析了该园区废油物流系统发展激励机制。本研究表明,完全信息条件下政府仅支付给园区废弃物物流系统固定补贴,当其经济能力足够强时,政府可取消固定补贴;不完全信息条件下政府可利用激励强度系数来调动园区废弃物物流系统的努力程度,使其承担一定的风险。

关键词：工业园区废弃物物流激励机制

基于表面肌电信号和动作捕捉的上肢运动疲劳分析

在线全文

学校读者我要写书评

暂无评论

生物医学工程学杂志 2022年第1期39卷 92-102页

作者：徐兆吕健潘伟杰何恺伦贵州大学现代制造技术教育部重点实验室贵阳550025

目前,上肢运动的疲劳状态监测,一般单纯依赖表面肌电信号(sEMG)对疲劳进行识别和分类,导致结果不稳定,存在一定局限。为此,本文将sEMG信号识别与动作捕捉技术引入到疲劳状态监测过程中,提出了一种融合改进的肌电疲劳阈值算法与生物力学... 详细信息

目前,上肢运动的疲劳状态监测,一般单纯依赖表面肌电信号(sEMG)对疲劳进行识别和分类,导致结果不稳定,存在一定局限。为此,本文将sEMG信号识别与动作捕捉技术引入到疲劳状态监测过程中,提出了一种融合改进的肌电疲劳阈值算法与生物力学分析的疲劳分析方法。本研究通过右上肢负载屈肘试验,同步采集肱二头肌sEMG信号与上肢动作捕捉数据,并同时运用柏格(Borg)疲劳度主观自觉量表记录受试者疲劳感受。然后,将融合改进的肌电疲劳阈值算法和生物力学分析的疲劳分析方法与平均功率频率(MPF)、谱矩比(SMR)、模糊近似熵(fApEn)、Lempel-Ziv复杂度(LZC)四种单一评价指标疲劳评价方法的试验结果进行对比。试验结果表明,本文方法对总体疲劳状态识别率结果达到98.6%,对轻松、过渡、疲劳三种状态的识别率分别达到97%、100%、99%,较其他方法更有优势。本文研究结果证明,本文方法在上肢运动过程中能够有效预防过度训练引起的二次损伤,对于疲劳监护具有重要意义。

关键词：肌电疲劳阈值动作捕捉生物力学上肢疲劳分析

在线全文

学校读者我要写书评

暂无评论

10种常见中药饮片微生物污染相关因素研究

中国现代应用药学 2022年第10期39卷 1317-1321页

作者：沈泓孙晗何凯伦李珏浙江省食品药品检验研究院杭州310052

目的探究中药饮片的品种、药用部位和炮制方法与微生物污染之间的关系。方法依照中国药典方法进行需氧菌总数计数、霉菌和酵母菌总数计数,采用SNK检验进行数据分析。采用生化分析及ABI3500基因测序对中药饮片中的嗜热菌进行鉴定分析... 详细信息

目的探究中药饮片的品种、药用部位和炮制方法与微生物污染之间的关系。方法依照中国药典方法进行需氧菌总数计数、霉菌和酵母菌总数计数,采用SNK检验进行数据分析。采用生化分析及ABI3500基因测序对中药饮片中的嗜热菌进行鉴定分析。结果需氧菌总数、霉菌和酵母菌总数的lg值分析显示,中药饮片的不同品种、不同药用部位和不同炮制方法之间存在显著性差异,分别以芫花、合欢皮品种,花类药用部位,净制的炮制方法染菌程度最大。中药饮片100℃水浴30 min后基本能够去除耐热菌微生物,但麦冬与芫花中仍能鉴定出嗜热菌。结论中药饮片的品种、药用部位和炮制方法的差异与微生物污染紧密相关。麦冬与芫花经过煎煮,依然不能完全杀灭嗜热菌。

关键词：中药饮片需氧菌总数计数霉菌和酵母菌总数计数 SNK检验耐热菌

新形势下我国疫苗批签发抽样模式现状分析及对策研究

在线全文

学校读者我要写书评

暂无评论

中国医药工业杂志 2022年第5期53卷 747-753页

作者：朱价徐涛王承何凯伦陶巧凤浙江省食品药品检验研究院浙江杭州310052 浙江省药品稽查局浙江杭州310012

疫苗批签发制度是一项对上市疫苗质量管理的重要制度,其中抽样活动介于批签发申请和批签发检验之间,抽样流程的科学性和抽样活动的专业性使之在疫苗批签发过程中发挥着重要作用。随着《中华人民共和国药品管理法》《中华人民共和国疫苗... 详细信息

疫苗批签发制度是一项对上市疫苗质量管理的重要制度,其中抽样活动介于批签发申请和批签发检验之间,抽样流程的科学性和抽样活动的专业性使之在疫苗批签发过程中发挥着重要作用。随着《中华人民共和国药品管理法》《中华人民共和国疫苗管理法》《生物制品批签发管理办法》的相继出台和实施,文章将现行法律法规对疫苗批签发抽样的最新要求进行梳理,从国内疫苗和出口疫苗2个角度,对疫苗批签发抽样现行模式进行阐释,探讨疫苗批签发抽样模型的现状与问题。最后提出相应对策,以期为批签发制度中抽样环节的监督管理提供参考。

关键词：疫苗批签发抽样疫苗责任强制保险

Reconstructing forest and grassland cover changes in China over the past millennium

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2025年第1期68卷 94-110页

作者： Fanneng he Fan YANG Yafei WANG Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Key Research Institute of Yellow River Civilization and Sustainable Development Henan University University of Chinese Academy of Sciences

Historical forest and grassland cover changes not only are critical indicators for quantifying ecological and environmental change processes but also serve as fundamental data for long-term climate change simulations and terrestrial ecosystem carbon emission assessments. However, because of limitations in historical data, quantitative estimations and spatially gridded reconstructions of these changes remain challenging, necessitating further methodological exploration. This study focused on China's present-day land area over the past millennium, objectively capturing the characteristics and drivers of forest and grassland cover changes. On this basis, using the forest transition theory and the space-for-time substitution method, we depicted the historical deforestation process as an inverted “S” curve and developed a model to reconstruct historical forest area changes based on the functional relationship between the forest area and population size dynamics. Subsequently, a gridded forest allocation model was established on the basis of deforestation tendencies. For the grassland cover, we implemented regionspecific methods, such as the cropland area deduction method and the habitat constraint method, to quantitatively reconstruct historical changes. Consequently, we obtained provincial forest and grassland area changes over the past millennium and mapped 10-km-resolution gridded data of forest and grassland cover. The results indicated the following.(1) The methods developed using population data as a proxy objectively reproduced the spatiotemporal evolution of forest and grassland cover in China over the past millennium. These feasible methods offer a novel pathway for the quantitative reconstruction of historical forest and grassland cover changes.(2) The data indicated that China's forest area generally decreased over the past millennium, characterized by a “decrease-then-increase” pattern. The forest area experienced three distinct phases: a slow decline(AD 1000

关键词： Land use and land cover change Forest Grassland Quantitative reconstruction Gridded reconstruction China historical period

Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di Zhang Pengfei Lv Wei Qin Xin he Yuanhua he Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

Breaking new ground in photocatalysis: lutetium texaphyrin as a trigger for pyroptosis through biomolecular photoredox reactions

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第1期68卷 1-2页

作者： Qihang Ding Mengrong he Meijia Gu Department of Chemistry Korea University Department of Ultrasound Medicine Union Hospital Tongji Medical College Huazhong University of Science and Technology Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (MOE) School of Pharmaceutical Sciences Wuhan University

Malignant neoplasms consistently pose a significant threat to global public health [1,2]. In recent years, immunotherapy has demonstrated remarkable clinical success; however, its efficacy is limited by the scarcity of immune cell infiltration within tumor microenvironments. Cell pyroptosis, a gasdermin-mediated process characterized by cellular swelling,rupture, and the release of intracellular contents such as IL-1β, IL-18, ATP, HMGB1, plays a crucial role in this context[3,4].

关键词：