检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

小微企业融资渠道分析

现代工业经济和信息化 2016年第19期6卷 3-6页

作者：李奥兵山西农业大学信息学院山西太谷030800

中国致力于帮助小微企业的发展,并为此制定了一系列政策,但是并没有从本质上解决问题,想要改善小微企业融资困难这一困境,首先需要面对的就是融资渠道这个难题。针对小微企业融资难的现状提出了新的融资渠道,使其能够得到改善,带动中国... 详细信息

中国致力于帮助小微企业的发展,并为此制定了一系列政策,但是并没有从本质上解决问题,想要改善小微企业融资困难这一困境,首先需要面对的就是融资渠道这个难题。针对小微企业融资难的现状提出了新的融资渠道,使其能够得到改善,带动中国经济发展。

关键词：小微企业融资渠道互联网金融

在线全文

学校读者我要写书评

暂无评论

大别造山带双庙关金矿床成矿时代与成矿背景

西北地质 2024年第1期57卷 207-218页

作者：秦志军汪兴韦周豹刘嘉杜文洋曾小华李奥冰张维康湖北省地质调查院湖北武汉430034 湖北省地质勘查工程技术研究中心湖北武汉430034 中国地质大学(武汉)资源学院湖北武汉430074

湖北省麻城市双庙关金矿床隶属于秦岭-大别成矿带,近年来找矿进展显著,但成矿时代和成矿背景尚不清楚。矿区广泛发育新元古代片麻状二长花岗岩和变辉长岩,沿NE-NNE向和NW向断裂产出11条金矿(化)体。基于详细野外调查发现,矿区北部钾长... 详细信息

湖北省麻城市双庙关金矿床隶属于秦岭-大别成矿带,近年来找矿进展显著,但成矿时代和成矿背景尚不清楚。矿区广泛发育新元古代片麻状二长花岗岩和变辉长岩,沿NE-NNE向和NW向断裂产出11条金矿(化)体。基于详细野外调查发现,矿区北部钾长花岗岩体、花岗斑岩体均被NE向含矿断裂穿切,为成矿前岩浆活动产物,矿区中部的闪长岩脉则穿切矿体,晚于成矿事件。钾长花岗岩体、花岗斑岩体和闪长岩脉的锆石U-Pb加权平均年龄分别为(133.6±1.1)Ma、(127.9±1.6)Ma和(126.6±1.3)Ma。因此,双庙关金矿床应形成于128~126 Ma,与小秦岭、熊耳山、桐柏等矿集区金爆发式成矿的时间一致,与中国东部岩石圈破坏导致的构造-岩浆事件密切相关。

关键词：双庙关金矿床大别造山带成矿时代岩石圈破坏

基于地球化学数据的斑岩型矿床蚀变矿物提取与综合成矿预测

在线全文

学校读者我要写书评

暂无评论

地质科技通报 2024年第5期43卷 105-116页

作者：张维康张青张成高征西许立权曹磊李奥冰姜春伟湖北省地质调查院武汉430034 中国地质大学(武汉)资源学院武汉430074 内蒙古自治区岩浆活动成矿与找矿重点实验室呼和浩特010020

传统的勘查地球化学工作侧重于成矿元素异常的提取、解释和评价,忽略了与成矿作用相关的其他主、微量元素可能提供的找矿信息,无法有针对性地从地球化学数据中开展蚀变矿物提取并指导找矿。本研究以矿物学的角度从地球化学数据中提取蚀... 详细信息

传统的勘查地球化学工作侧重于成矿元素异常的提取、解释和评价,忽略了与成矿作用相关的其他主、微量元素可能提供的找矿信息,无法有针对性地从地球化学数据中开展蚀变矿物提取并指导找矿。本研究以矿物学的角度从地球化学数据中提取蚀变矿物并对研究区进行了成矿预测,介绍了以地球化学数据为基础、以矿物化学式中不同元素间化学计量数比值为理论基础的蚀变矿物提取新方法——一般元素比分析法。基于北山造山带高石山地区1∶2.5万岩屑地球化学测量获得的地球化学数据研究表明,从SiO_(2)、Al_(2)O_(3)、Na_(2)O、K_(2)O等数据中可有效识别出与斑岩型矿床密切相关的绢云母、钾长石等蚀变矿物,其中绢云母沿岩体边缘分布,钾长石多集中分布于岩体的中心部位。综合提取出的蚀变矿物和岩浆岩、构造、传统化探异常等控矿因素和找矿信息,进一步对研究区开展了证据权重法成矿预测,共圈定靶区5处。本研究提取的蚀变信息在野外调查工作中得到了验证,表明一般元素比分析法提取蚀变矿物是可行的,可在传统成矿预测方法的基础上进一步提供关键找矿信息。

关键词：一般元素比分析蚀变矿物成矿预测斑岩型矿床北山造山带地球化学

Insights into interfacial speciation and deposition morphology evolution at Mg-electrolyte interfaces under practical conditions

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第9期29卷 299-307,I0009页

作者： Zihao Song Zhonghua Zhang aobing Du Shamu Dong Guicun li Guanglei Cui College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina

Rechargeable magnesium(Mg)battery technologies show the promise of low cost,less safety concerns and relatively higher energy *** the critical issues on the Mg stripping/plating performance as well as the Mg metal anode-electrolyte interfacial chemistry is one great importance under the practical areal capacity and rate *** this work,we systematically investigate the electrochemistry of Mg stripping/plating processes within four distinctive Mg-ion electrolytes and the Mg anodeelectrolyte interfacial chemistry under practical *** results show that the cycle life of Mg//Cu asymmetric cells using these above electrolytes is significantly shortened(less than 10 cycles)when tested at a practical areal capacity of 10 mAh cm^-*** optical and electron microscopic analyses reveal that the gradual growth of the Mg deposits is susceptible to detachment from the copper substrate,where the initial nucleation process might *** spite of showing an interconnected particle-like morphology,the Mg deposits could easily penetrate the porous separator,leading to cell *** co-deposition of metallic Al is revealed from surface region to bulk,while the Cl-containing species exist in the near surface of Mg *** work not only highlights the critical impacts of areal capacity on the performances of Mg stripping/plating process,but calls for further efforts to eliminating the safety concerns of Mg anode under practical conditions.

关键词： Magnesium battery Interfacial chemistry Magnesium stripping/plating Aluminum co-deposition

High area-capacity Mg batteries enabled by sulfur/copper integrated cathode design

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第9期31卷 370-378,I0011页

作者： Zhenfang Zhou aobing Du Weijie Kong Zhuang Chen Zhonghua Zhang Bingbing Chen Yitao He Shanmu Dong Zhenjiang li Guicun li Guanglei Cui College of Materials Science and Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina Department of Energy Science and Engineering Nanjing Tech UniversityNanjing 211816JiangsuChina Department of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina

Rechargeable Mg batteries potentially display lower cost and competitive energy density compared with their li-ion ***,the practical implementation of high area-capacity cathodes still remains a formidably challenging *** work presents the sulfur/copper integrated cathodes fabricated by the conventional blade-coating process and slurry-dipping *** sulfur/copper foil integrated cathodes deliver a high area-capacity of 2.6 mAh cm^(-2)after 40 cycles,while the sulfur/copperfoam integrated cathode exhibits an ultrahigh area-capacity of 35.4 mAh cm^(-2),corresponding to 743.1 Wh L^(-1)at the electrode level(1.5 times higher than the liCoO_(2)-graphite system).The in-situ formed copper sulfide intermediates with sufficient cation defects can act as functional intermediates to regulate the sulfur electrochemistry during the first discharge *** subsequent cycles are operated by the reversible displacement reaction between Mg-ions and copper sulfide active *** particular,the copper ions prefer to extrude along the[001]direction in copper sulfides lattice and simultaneously the rock-salt MgS crystals are ***,the nonuniform surface topography of the cycled Mgmetal anode,caused by the spatial inhomogeneity in current distribution,is demonstrated to lead to the battery performance degradation for high area-capacity Mg batteries.

关键词： Magnesium batteries Sulfur cathode Displacement reaction Copper sulfides

BMAL1 regulates mitochondrial fission and mitophagy through mitochondrial protein BNIP3 and is critical in the development of dilated cardiomyopathy

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2020年第9期11卷 661-679页

作者： Ermin li Xiuya li Jie Huang Chen Xu Qianqian liang Kehan Ren aobing Bai Chao Lu Ruizhe Qian Ning Sun Department of Physiology and Pathophysiology State Key Laboratory of Medical NeurobiologySchool of Basic Medical SciencesFudan UniversityShanghai 200032China Department of Pathology School of Basic Medical SciencesFudan UniversityShanghai 200032China Shanghai Key Lab of Birth Defect Children's Hospital of Fudan UniversityShanghai 201102China Shanghai Key Laboratory of Clinical Geriatric Medicine Fudan UniversityShanghai 200032China Research Center on Aging and Medicine Fudan UniversityShanghai 200032China

Dysregulation of circadian rhythms associates with cardiovascular *** is known that deletion of the core circadian gene Bma/1 in mice causes dilated ***,the biological rhythm regulation system in mouse is very different from that of *** BMAL1 plays a role in regulating human heart function remains *** we generated a BMAL1 knockout human embryonic stem cell(hESC)model and further derived human BMAL1 deficient *** show that BMAL1 deficient hESC-derived cardiomyocytes exhibited typical phenotypes of dilated cardiomyopathy including attenuated contractility,cal-cium dysregulation,and disorganized *** addition,mitochondrial fission and mitophagy were suppressed in BMAL1 deficient hESC-cardiomyocytes,which resulted in significantly attenuated mitochondrial oxidative phosphorylation and compromised cardiomy-ocyte *** also found that BMAL1 binds to the E-box element in the promoter region of BNIP3 gene and specifically controls BNIP3 protein ***1 knockout directly reduced BNIP3 protein level,causing compromised mitophagy and mitochondria dysfunction and thereby leading to compromised cardiomyocyte *** data indicated that the core circadian gene S/VMLf is critical for normal mitochondria activities and cardiac *** rhythm disruption may directly link to compromised heart function and dilated cardiomyopathy in humans.

关键词： circadian gene BMAL1 human embryonic stem cells cell differentiation cardiomyocytes dilated cardiomyopathy mitochondria

Recent progress on electrolyte functional additives for protection of nickel-rich layered oxide cathode materials

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第2期31卷 280-292页

作者： Longshan li Dingming Wang Gaojie Xu Qian Zhou Jun Ma Jianjun Zhang aobing Du Zili Cui Xinhong Zhou Guanglei Cui College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyNo.53 Zhengzhou RoadQingdao 266042ShandongChina Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesNo.189 Songling RoadQingdao 266101ShandongChina

In advantages of their high capacity and high operating voltage,the nickel(Ni)-rich layered transition metal oxide cathode materials(liNi_(x)Co_(y)Mn_(z)O_(2)(NCMxyz,x+y+z=1,x≥0.5)and liNi_(0.8)Co_(0.15)Al_(0.05)O_(2)(NCA))have been arousing great interests to improve the energy density of ***,these Nirich cathodes always suffer from rapid capacity degradation induced by unstable cathode-electrolyte interphase(CEI)layer and destruction of bulk crystal ***,varied electrode/electrolyte interface engineering strategies(such as electrolyte formulation,material coating or doping)have been developed for Ni-rich cathodes *** them,developing electrolyte functional additives has been proven to be a simple,effective,and economic method to improve the cycling stability of Nirich *** is achieved by removing unfavorable species(such as HF,H_(2)O)or constructing a stable and protective CEI layer against unfavorable reactive species(such as HF,H_(2)O).Herein,this review mainly introduces the varied classes of electrolyte functional additives and their working mechanism for interfacial engineering of Ni-rich ***,key favorable species for stabilizing CEI layer are *** importantly,we put forward perspectives for screening and customizing ideal functional additives for high performance Ni-rich cathodes based liBs.

关键词： Nickel-rich layered oxide cathode Electrolyte additive Functional group Working mechanism Cathode-electrolyte interphase(CEI)

Roadmap for rechargeable batteries:present and beyond

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第1期67卷 13-42页

作者： Sen Xin Xu Zhang lin Wang Haijun Yu Xin Chang Yu-Ming Zhao Qinghai Meng Pan Xu Chen-Zi Zhao Jiahang Chen Huichao Lu Xirui Kong Jiulin Wang Kai Chen Gang Huang Xinbo Zhang Yu Su Yao Xiao Shu-Lei Chou Shilin Zhang Zaiping Guo aobing Du Guanglei Cui Gaojing Yang Qing Zhao liubing Dong Dong Zhou Feiyu Kang Hu Hong Chunyi Zhi Zhizhang Yuan Xianfeng li Yifei Mo Yizhou Zhu Dongfang Yu Xincheng Lei Jianxiong Zhao Jiayi Wang Dong Su Yu-Guo Guo Qiang Zhang Jun Chen li-Jun Wan CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China University of Chinese Academy of Sciences.Beijing 100049 China Institute of Advanced Battery Materials and Devices Faculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Advanced Functional Materials Ministry of EducationBeijing University of TechnologyBeijing 100124China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830046China Department of Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChangchun 130022China Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide 5000Australia Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Frontiers Science Center for New Organic Matter Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education)College of ChemistryNankai UniversityTianjin 300071China College of Chemistry and Materials Science Jinan UniversityGuangzhou 511443China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Division of Energy Storage Dalian National Laboratory for Clean Energy(DNL)Dalian Institute of Chem

Rechargeable batteries currently hold the largest share of the electrochemical energy storage market,and they play a major role in the sustainable energy transition and industrial decarbonization to respond to global climate *** to the increased popularity of consumer electronics and electric vehicles,lithium-ion batteries have quickly become the most successful rechargeable batteries in the past three decades,yet growing demands in diversified application scenarios call for new types of rechargeable *** efforts are made to developing the next-generation post-li-ion rechargeable batteries,which include,but are not limited to solid-state batteries,lithium–sulfur batteries,sodium-/potassium-ion batteries,organic batteries,magnesium-/zinc-ion batteries,aqueous batteries and flow *** the great achievements,challenges persist in precise understandings about the electrochemical reaction and charge transfer process,and optimal design of key materials and interfaces in a *** roadmap tends to provide an overview about the current research progress,key challenges and future prospects of various types of rechargeable *** computational methods for materials development,and characterization techniques will also be discussed as they play an important role in battery research.

关键词： energy storage rechargeable batteries battery materials electrochemistry

在线全文

学校读者我要写书评

暂无评论

社区共享空间与人类福祉关系研究的概念框架

家具与室内装饰 2022年第6期29卷 105-109页

作者：王荣李佳莹袁傲冰安华征中南林业科技大学家具与艺术设计学院湖南长沙410004

现阶段以提升城市共享性为重要价值诉求的城市发展更新理念逐渐进入人们视野,并引发了学术界对共享城市的探索和实践的热潮。城市公共空间作为城市的重要资产,也是“城市人”活动的主要场所。营造以人为本的城市公共共享空间不仅能有效... 详细信息

现阶段以提升城市共享性为重要价值诉求的城市发展更新理念逐渐进入人们视野,并引发了学术界对共享城市的探索和实践的热潮。城市公共空间作为城市的重要资产,也是“城市人”活动的主要场所。营造以人为本的城市公共共享空间不仅能有效地利用各类资源,对于“城市人”也有着多方面的益处。借鉴级联框架和连接多层次人类福祉的生态系统服务分析框架来构建社区共享空间与人类福祉的关系分析框架,以级联方式系统梳理从人居环境到人类收益的形成过程,从而建立起从城市系统到社区共享空间,最后到人类福祉的关联,从而得出城市共享空间与人类福祉的影响及分析框架。

关键词：城市共享空间人类福祉城市系统正负反馈