检索结果-南通市图书馆

Recent Advances in Fibrous Materials for Hydroelectricity Generation

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo Xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao yong Du Zhe Sun Weilin Xu Jian fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

在线全文

学校读者我要写书评

暂无评论

添加无烟煤对焦炭微晶和气孔结构的影响

钢铁 2006年第10期41卷 16-18,22页

作者：房永征曹银平金鸣林杨俊和钱湛芬上海应用技术学院材料工程系上海200235 宝山钢铁股份有限公司炼铁厂上海200941 安徽工业大学化工学院安徽马鞍山243002

根据焦炭的XRD谱图及SCHERRER’S公式研究了添加无烟煤炼焦后焦炭的微晶结构参数的变化。试验结果表明:添加无烟煤可以促进焦炭中微晶的发展,使焦炭微晶结构参数La、Lc和石墨化度增大。利用氮气吸附方法分析了焦炭气孔结构的变化,结果发... 详细信息

根据焦炭的XRD谱图及SCHERRER’S公式研究了添加无烟煤炼焦后焦炭的微晶结构参数的变化。试验结果表明:添加无烟煤可以促进焦炭中微晶的发展,使焦炭微晶结构参数La、Lc和石墨化度增大。利用氮气吸附方法分析了焦炭气孔结构的变化,结果发现:添加无烟煤炼焦后焦炭的微孔体积、比表面积和平均孔径都有显著的降低。根据FHH模型计算了焦炭的分形维数。结果表明:在焦炭中存在分形结构,添加无烟煤炼焦后焦炭的分形维数降低,焦炭表面变光滑。

关键词：无烟煤焦炭微晶气孔结构分形维数

Urotensin Ⅱ accelerates cardiac fibrosis and hypertrophy of rats induced by isoproterenol

在线全文

学校读者我要写书评

暂无评论

Acta Pharmacologica Sinica 2007年第1期28卷 36-43页

作者： yong-gang ZHANG~(2,5) Yu-guang LI~2 Bao-guo LIU~3 Rui-hong WEI~2 Dong-ming WANG~2 Xue-rui TAN~2 Ding-fang BU~4 yong-zheng PANG~4 Chao-shu TANG~42 Department of Cardiovascular Diseases,First Affiliated Hospital,Shantou University Medical College,Shantou 515041,China 3 The Affiliated Hospital,Medical School of Hebei University of Engineering,Hebei 056029,China,4 Institute of Cardiovascular Research,Peking University First Hospital,Beijing 100034,China Department of Cardiovascular Diseases First Affiliated Hospital Shantou University Medical College Shantou China The Affiliated Hospital Medical School of Hebei University of Engineering Hebei China Institute of Cardiovascular Research Peking University First Hospital Beijing China

Aim:To study whether urotensin II（UII）,a potent vasoconstrictive peptide,isinvolved in the development of cardiac hypertrophy and fibrogenesis of ratsinduced by isoproterenol（ISO）.Methods:Thirty male Wistar rats were randomlydivided into 3 *** 1 was the healthy control group,group 2 was the ISOgroup,and group 3 was the ISO+UII *** groups 2 and 3,ISO(5 mg-kg-1.d-1)wasgiven（sc）once daily for 7 *** 3 was also given UII in the first day [3 nmol/kg（5μg/kg）,iv],followed by sc（1.5 μg/kg）twice *** 1 received 0.9% *** receptor（UT）mRNA expression was determined by *** contents ofUII and angiotensin II（Ang II）were determined by *** vitro,the effects of UII on DNA/collagen synthesis of cardiac fibroblasts were deter-mined by [3H]thymidine/[3H]proline ***:The ratio of heartweight/body weight,plasma lactate dehydrogenase activity,myocardialmalondialdehyde and hydroxyproline concentration increased significantly in theISO group,as well as UT mRNA expression,plasma and cardiac UII and ventricu-lar Ang II,compared with the control group（P<0.01）.ISO induced significantmyocardial ***,UII+ISO co-treatment significantly increasedthe changes of biochemical markers of injury and the degree of cardiac hypertro-phy and *** vitro,5×10～9-5×10-7mol/L UII stimulated[3H]thymidine/[3H]proline incorporation into cardiac fibroblasts in a dose-dependent manner（P<0.01）.Conclusion:These results suggest that UII was involved in the development ofcardiac fibrosis and hypertrophy by synergistic effects with ISO.

关键词： cardiac remodeling cardiac fibrosis GPR14 receptor urotensin II collagen

碲镉汞量子点的离子交换能带调控及其近红外自吸收性质

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

红外与毫米波学报 2022年第2期41卷 377-383页

作者：房诗玉刘振宇金佳杰史继超房永征孙常鸿叶振华刘玉峰上海应用技术大学材料科学与工程学院上海201418 中国科学院上海技术物理研究所红外成像材料与器件重点实验室上海200083

通过软化学方法制备单分散的CdTe量子点,调节Hg^(2+)的浓度离子交换实现从可见到近红外光谱准连续可调的碲镉汞(Hg_(x)Cd_(1-x)Te)量子点制备。深入分析了近红外Hg_(0.33)Cd_(0.67)Te量子点的变温光致发光及其自吸收特性,研究结果表明:... 详细信息

通过软化学方法制备单分散的CdTe量子点,调节Hg^(2+)的浓度离子交换实现从可见到近红外光谱准连续可调的碲镉汞(Hg_(x)Cd_(1-x)Te)量子点制备。深入分析了近红外Hg_(0.33)Cd_(0.67)Te量子点的变温光致发光及其自吸收特性,研究结果表明:碲镉汞量子点的荧光强度随着温度的升高(0∼100℃)呈线性降低趋势,谱线展宽,峰位发生红移(12 nm);量子点的吸收和发射光谱部分重叠导致自吸收效应随着量子点的浓度增加而增强,导致量子点荧光强度的降低。

关键词：碲镉汞量子点离子交换近红外自吸收

Small modifications of endo-functionalized cavities lead to large changes in molecular interaction in water

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 369-376页

作者： Song-Meng Wang Hao Nian Yan-fang Wang Li-Shuo zheng Yu-Tao zheng Yi-Wei Dong Liping Huang Xiaoping Wang Wei Jiang Liu-Pan Yang Department of Chemistry Southern University of Science and Technology School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesGuangxi Normal University School of Pharmaceutical Science Hengyang Medical School University of South China

Studying molecular recognition in aqueous environments is crucial for understanding biological processes. Herein, we present a series of N-doped endo-functionalized anthracene-based cavities by introducing inward-directed pyridine units. The subtle modifications can significantly affect the binding properties of these receptors, which is similar to the mutations in biological systems. Combining theoretical calculations and molecular recognition experiments demonstrated that these “mutations” have an impact on the hydrophobicity and charge distribution of the hosts, consequently significantly influencing molecular *** is crucial for understanding the intricate mechanisms of molecular-level interactions in biological receptors.

关键词：

同方期刊数据库

The low-latitude sodium layer:comparative data from lidar observations at Hainan,China and São Paulo,Brazil

在线全文

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2025年第1期9卷 39-53页

作者： fang Wu Jing Jiao GuoTao Yang Lifang Du zhengKuan Liu HaoRan zheng JiXin Guo ShaoHua Gong YaJun Zhu State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Hainan National Field Science Observation and Research Observatory for Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China China-Brazil Joint Laboratory for Space Weather NSSC/INPESão Josédos Campos 12227-010Brazil School of Physics and Electronics Engineering Hainan Normal UniversityHaikou 571158China

Physical and chemical processes observed in the mesosphere and thermosphere above the Earth’s low latitudes are complex and highly interrelated to activity in the low-latitude *** sodium detected by lidar can yield clues to dynamic and chemical processes in these spatial layers above the Earth’s *** paper is based on sodium layer data collected at two low-latitude stations,one in the northern hemisphere and one in the *** low-latitude sodium layer exhibits conspicuous seasonal variations in shape,density,and altitude;these variations are similar between Earth’s hemispheres:sodium layer density at both stations reaches its seasonal maximum in autumn and minimum in ***,maximal Na density over Brazil is greater than that over *** variations of Na density above the two low-latitude stations are also similar;at both,maxima are observed before *** variations of the Na layer over Brazil that differ from those observed in the northern hemisphere may be related to the South Atlantic Magnetic Anomaly(SAMA)or fountain *** suggest that low-latitude Na layer data may provide useful additional evidence that could significantly improve the low-latitude part of the WACCM-Na model.

关键词： metallic sodium layer seasonal variation nocturnal variation lidar

钙钛矿量子点复合光子晶体薄膜的快速制备及结构显色、荧光性能

在线全文

学校读者我要写书评

暂无评论

发光学报 2022年第6期43卷 807-816页

作者：李金铎刘志福任瑛琪侯京山刘玉峰房永征上海应用技术大学材料科学与工程学院上海201418

光子晶体(PC)是一种在介观尺度下具有周期性自组装结构的材料,其最显著的特征是具有光子禁带(PBG)。波长位于光子禁带内的光不能透过光子晶体而被反射回来,因而光子晶体具有优异的光调控能力。对量子点材料发光强度和寿命的调控是该领... 详细信息

光子晶体(PC)是一种在介观尺度下具有周期性自组装结构的材料,其最显著的特征是具有光子禁带(PBG)。波长位于光子禁带内的光不能透过光子晶体而被反射回来,因而光子晶体具有优异的光调控能力。对量子点材料发光强度和寿命的调控是该领域的研究热点之一。本文以二氧化硅(SiO_(2))胶体球作为光子晶体组装单元,通过电泳沉积的方式制备了厚度可控的光子晶体薄膜。采用热注入方法制备了钙钛矿量子点(CsPbX_(3),X=Cl,Br,I)。光子晶体薄膜经表面疏水改性后,将钙钛矿量子点嵌入在光子晶体周期性结构中,该结构具有结构显色和荧光的双重性能。本工作发现光子晶体结构对蓝、红、绿三色钙钛矿量子点可获得4.5倍、19倍、11倍的荧光增强,在显示、防伪、光电探测器、发光二极管等领域具有潜在的应用价值。

关键词：光子晶体钙钛矿量子点荧光增强电泳沉积

维普期刊数据库博看期刊

Trinuclear gold-catalyzed site-selective alkylation of peptides

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 249-256页

作者： Qing-Yun fang Chengyihan Gu Yinghan Chen Wencheng Yan yong Liang Weipeng Li Chengjian Zhu Jie Han Jin Xie State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Chemistry and Biomedicine Innovation Center (Chem BIC) School of Chemistry and Chemical Engineering Nanjing University Green Catalysis Center College of Chemistry Zhengzhou University State Key Laboratory of Natural Medicines China Pharmaceutical University

Selective modification of peptides has always been a challenging issue. The selective alkylation of peptides can alter the biological activity and physical properties of molecules, and it has gained significant research interest. We herein disclose an intriguing gold-catalyzed alkylation of peptides using bench-stable unactivated alkyl bromides under photoredox catalysis. A wide range of structurally diverse primary, secondary and tertiary alkyl bromides serve as effective coupling partners to precisely connect with the α-C(sp3)–H in glycine residue of peptides. This protocol demonstrates an exceptionally broad scope for alkyl halides and excellent tolerance for a wide range of useful functional groups. A series of relay transformations to construct cyclic peptides, to proceed click reaction and to realize peptide fluorescence labeling further enhance its synthetic practicality. In addition, mechanistic studies and density functional theory(DFT) calculations reveal an inner-sphere and subsequent outersphere single electron transfer(SET) mechanism.

关键词：

同方期刊数据库

基于Mn-MOF的多孔碳/MnO复合材料的制备及催化性能研究

在线全文

学校读者我要写书评

暂无评论

化学试剂 2017年第7期39卷 684-688页

作者：田小兵丁艳花张小磊房永征张娜武汉理工大学资源与环境工程学院湖北武汉430070 上海风享环保科技有限公司上海200436 上海应用技术大学材料科学与工程学院上海201418

首先通过溶剂法制备甲酸锰(Mn-MOF)晶体,接着以Mn-MOF为前驱体,在惰性条件下制备了结构、形貌可控的多孔碳/MnO复合物。采用XRD、BET和SEM表征Mn-MOF前驱体和多孔碳/MnO复合物的结构、形貌等。结果表明,600℃下获得的多孔碳/MnO复合物... 详细信息

首先通过溶剂法制备甲酸锰(Mn-MOF)晶体,接着以Mn-MOF为前驱体,在惰性条件下制备了结构、形貌可控的多孔碳/MnO复合物。采用XRD、BET和SEM表征Mn-MOF前驱体和多孔碳/MnO复合物的结构、形貌等。结果表明,600℃下获得的多孔碳/MnO复合物含有立方相MnO和无定型多孔碳。将多孔碳/MnO复合物用于催化臭氧分解,催化效率可达92.3%,重复利用性好。

关键词： Mn-MOF 多孔碳/MnO 臭氧催化率