检索结果-南通市图书馆

Template-free hydrothermal synthesis and gas-sensitivity of hollow-structured Cu_(0.3)Co_(2.7)O_(4) microspheres

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2021年第7期28卷 1946-1954页

作者： TIAN Li LIU Qiang wu jie-ling YI Yi-tao School of Materials Science and Engineering Hunan University of Science and TechnologyXiangtan 411201China Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers Hunan University of Science and TechnologyXiangtan 411201China Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and TechnologyXiangtan 411201China Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology Hunan University of Science and TechnologyXiangtan 411201China School of Chemistry and Chemical Engineering Hainan Normal UniversityHaikou 571158China

Hollow-structured Cu_(0.3)Co_(2.7)O_(4) microspheres have been synthesized by a simple one-pot template-free hydrothermal method with copper sulfate,cobalt acetate and ammonia as raw *** products were characterized by powder X-ray diffraction,energy dispersive X-ray analysis,selected area electron diffraction,high-resolution transmission electron microscopy,scanning electron microscopy and BET *** research results show that the hollow Cu_(0.3)Co_(2.7)O_(4) microspheres consist of single-crystalline nanocubes with the diameter of about 20 *** formation mechanism of hollow Cu_(0.3)Co_(2.7)O_(4) microspheres is suggested as Ostwald ripening in a solid-solution-solid process,and Cu_(0.3)Co_(2.7)O_(4) microspheres are mesoporous containing two pore sizes of 3.3 and 5.9 *** as-prepared Cu_(0.3)Co_(2.7)O_(4) sensors have optimal gas responses to 50×10^(−6) mg/m^(3) C_(2)H_(5)OH at 190℃.

关键词： Cu_(0.3)Co_(2.7)O_(4)oxides microsphere inorganic compounds nanostructures template-free hydrothermal method

在线全文

学校读者我要写书评

暂无评论

穿斗式木结构抗侧力性能试验研究

建筑结构学报 2018年第10期39卷 122-129页

作者：熊海贝王洁吴玲陈琳同济大学土木工程学院

为研究穿斗式木结构的抗侧力性能,采用传统工艺和国产杉木,依据徽派建筑中木构架的制式,设计并制作了足尺穿斗式木结构模型。通过单调加载试验,研究了模型的水平承载能力、变形性能、抗侧刚度、榫卯节点和柱脚节点等抗侧力性能。结果表... 详细信息

为研究穿斗式木结构的抗侧力性能,采用传统工艺和国产杉木,依据徽派建筑中木构架的制式,设计并制作了足尺穿斗式木结构模型。通过单调加载试验,研究了模型的水平承载能力、变形性能、抗侧刚度、榫卯节点和柱脚节点等抗侧力性能。结果表明：木构架最大层间位移角可达1/16,整体变形性良好;榫卯节点的受力过程经历了弹性阶段和塑性发展阶段,具有较好的转动能力;但木构架各柱的水平受力并不均匀,结构失效模式表现为个别柱脚滑移超过础石导致局部破坏。同时,榫卯连接传递弯矩能力较弱,多道穿枋、斗枋和地脚枋可有效加强结构的整体性。

关键词：穿斗式木结构足尺模型试验抗侧力性能失效模式

Remaining Life Prediction Method for Photovoltaic Modules Based on Two-Stage Wiener Process

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2025年第1期122卷 331-347页

作者： jie Lin Hongchi Shen Tingting Pei Yan wu School of Electrical Engineering and Information Engineering Lanzhou University of TechnologyLanzhou730050China

Photovoltaic (PV) modules, as essential components of solar power generation systems, significantly influence unitpower generation *** service life of these modules directly affects these costs. Over time, the performanceof PV modules gradually declines due to internal degradation and external environmental *** cumulativedegradation impacts the overall reliability of photovoltaic power generation. This study addresses the complexdegradation process of PV modules by developing a two-stage Wiener process model. This approach accountsfor the distinct phases of degradation resulting from module aging and environmental influences. A powerdegradation model based on the two-stage Wiener process is constructed to describe individual differences inmodule degradation processes. To estimate the model parameters, a combination of the Expectation-Maximization(EM) algorithm and the Bayesian method is employed. Furthermore, the Schwarz Information Criterion (SIC) isutilized to identify critical change points in PV module degradation trajectories. To validate the universality andeffectiveness of the proposed method, a comparative analysis is conducted against other established life predictiontechniques for PV modules.

关键词： Photovoltaic modules degradation stochastic processes lifetime prediction

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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

Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu Xiao-Li Li Xiao-Ting Sun Li-Ting Wang Xia wu ling-jie Zhu Xiao-Jia Yang Qian-Ru He Fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

在线全文

学校读者我要写书评

暂无评论

厘礼正俗:晚唐李涪《刊误》考

图书馆理论与实践 2020年第3期 99-104页

作者：吴凌杰浙江工贸职业技术学院区域文化研究中心上海师范大学古籍所

晚唐李涪深谙礼制并拥有"周礼库"之美誉,《刊误》便是其针对当时礼制沦丧所著之书。文章对李涪生平事迹与《刊误》一书版本进行考释,分析其史料价值,认为此书不仅史源近真、反映现实,又能补史之阙,是如今学界研究唐代礼制及社会习俗不... 详细信息

晚唐李涪深谙礼制并拥有"周礼库"之美誉,《刊误》便是其针对当时礼制沦丧所著之书。文章对李涪生平事迹与《刊误》一书版本进行考释,分析其史料价值,认为此书不仅史源近真、反映现实,又能补史之阙,是如今学界研究唐代礼制及社会习俗不可多得的史料来源。

关键词：晚唐李涪《刊误》笔记小说

在线全文

学校读者我要写书评

暂无评论

家国分野:唐代“国忌行香”问题再探

唐都学刊 2021年第5期37卷 24-34页

作者：吴凌杰中山大学历史学系广州510275

唐代的“国忌行香”分为帝王丧葬流程中的“国忌行香”与追祭性质的“国忌行香”两类。前者反映了中古丧葬礼制在时代变革之中,遭到了宗教因素的渗透,也反映了皇帝对礼制的遵循具有“公、私”两者不同的场域,“公场域”下的皇帝多依照... 详细信息

唐代的“国忌行香”分为帝王丧葬流程中的“国忌行香”与追祭性质的“国忌行香”两类。前者反映了中古丧葬礼制在时代变革之中,遭到了宗教因素的渗透,也反映了皇帝对礼制的遵循具有“公、私”两者不同的场域,“公场域”下的皇帝多依照儒家礼制而行,“私场域”下的皇帝行为具有独立性。后者反映了皇帝(节度使)对死者的孝思,体现了君臣父子之间人伦关系,也表达了地方对唐中央的服从。

关键词：唐代丧葬礼制 “国忌行香”

在线全文

学校读者我要写书评

暂无评论

宁夏发展县域经济的问题与对策

宁夏社会科学 2006年第6期 76-78页

作者：杨巧红吴灵捷宁夏社会科学院宁夏银川750021 宁夏回族自治区党委政策研究室宁夏银川750021

宁夏县域经济发展受频繁的自然灾害、较低的产业层次、突出的区域差距等因素的制约。文章主要探讨了宁夏县域经济发展中存在的问题,提出了加快县域经济发展的几点建议,如在政策导向上要分类发展,要发展县域工业以增加工业反哺农业的积累... 详细信息

宁夏县域经济发展受频繁的自然灾害、较低的产业层次、突出的区域差距等因素的制约。文章主要探讨了宁夏县域经济发展中存在的问题,提出了加快县域经济发展的几点建议,如在政策导向上要分类发展,要发展县域工业以增加工业反哺农业的积累,要防止城镇化成为“城建化”,转移剩余劳动力,等等。

关键词：宁夏县域经济困难与问题

Homologous CoS2 interface with directed electron transfer and strong chloridion repulsion for efficient seawater oxidation

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Yuan Tian Jiang-Bo Chen jie Ying Ge Tian Yu-Xuan Xiao Yi Lu Si-Ming wu Wei Geng ling Shen Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and School of Materials Science and Engineering and Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology School of Chemical Engineering and Technology Sun Yat-Sen University National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu Laboratory

Seawater electrolysis is a highly promising method to produce high energy density hydrogen,especially in dry areas that have scarce freshwater ***,application of seawater electrolysis is confronted by two major problems associated with catalysts employed for the anodic oxygen evolution reaction （OER） including the competitive hypochlorite evolution reaction（HCER） and strong chloridion （Cl–） triggered *** studies aimed at overcoming these problems,a facile method has been developed to synthesize a homologous CoS2heterojunction as an OER *** to a difference in work functions at the interface and increased electron density,this material has directed electron transfer and strong chloridion repulsion properties,*** have shown that CoS2achieves low overpotentials of 289 and 322 mV at 10 mA cm-2current density in respective alkaline （1 M KOH） and alkaline simulated seawater ***,the outstanding stability of CoS2is reflected in a negligible decline in activity during promotion of the OER for 100 *** of density functional theory calculations reveal that the homologous CoS2heterojunction promotes directed electron transport for optimizing adsorption/desorption of reactive species and heightens the Cl-adsorption energy for strongly repulsing Cl-,phenomena that enhance OER performance in alkaline simulated seawater.

关键词：

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

宁夏设施农业市场问题研究

宁夏社会科学 2008年第6期 62-66页

作者：郭正礼张耀武吴灵捷宁夏社会科学院宁夏银川750021 宁夏回族自治区党委政策研究室宁夏银川750021

加快宁夏设施农业发展,是推进宁夏农业和农村经济跨越式发展的一项重大战略举措。为了降低设施农业的市场风险,提高经济效益,需要对设施农业的市场营销问题进行实证分析,提出对策,以推动设施农业健康发展。本文通过对宁夏设施农业发展... 详细信息

加快宁夏设施农业发展,是推进宁夏农业和农村经济跨越式发展的一项重大战略举措。为了降低设施农业的市场风险,提高经济效益,需要对设施农业的市场营销问题进行实证分析,提出对策,以推动设施农业健康发展。本文通过对宁夏设施农业发展现状、存在问题和设施农产品市场供求关系的分析,阐述了宁夏设施农业发展的思路和市场定位,提出了加快宁夏设施农业市场发展的对策建议。

关键词：宁夏设施农业市场研究