检索结果-南通市图书馆

档案与建设 2011年第5期 10-12页

作者：李灵风上海大学图书情报档案系上海200444

探讨档案馆人文精神的内涵,追溯其起源和发展,分析其意义,并从服务原则确立、建筑语言表达、管理模式创新、服务方式拓展等方面研究其实践路径。

关键词：档案馆人文精神

Overexpression of tonoplast Ca^(2+)-ATPase in guard cells synergistically enhances stomatal opening and drought tolerance

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第8期66卷 1587-1602页

作者： Jinghan Su Bingqing He Peiyuan li Baiyang Yu Qiwen Cen lingfeng Xia Yi Jing Feibo Wu Rucha Karnik Dawei Xue Michael R.Blatt Yizhou Wang Institute of Crop Science Zhejiang UniversityHangzhou 310058China Laboratory of Plant Physiology and Biophysics University of GlasgowGlasgow G128QQUK BGI Research Sanya 572025China College of life and Environmental Sciences Hangzhou Normal UniversityHangzhou 311121China Zhejiang Provincial Key Laboratory of Crop Germplasm Zhejiang UniversityHangzhou 310058China

Stomata play a crucial role in plants by controlling water status and responding to drought ***,simultaneously improving stomatal opening and drought tolerance has proven to be a significant *** address this issue,we employed the OnGuard quantitative model,which accurately represents the mechanics and coordination of ion transporters in guard *** the guidance of OnGuard,we successfully engineered plants that overexpressed the main tonoplast Ca^(2+)-ATPase gene,ACA11,which promotes stomatal opening and enhances plant ***,these transgenic plants also exhibited improved drought tolerance due to reduced water loss through their ***,OnGuard assisted us in understanding the mechanism behind the unexpected stomatal behaviors observed in the ACA11 overexpressing *** study revealed that the overexpression of ACA11 facilitated the accumulation of Ca^(2+)in the vacuole,thereby influencing Ca^(2+)storage and leading to an enhanced Ca^(2+)elevation in response to abscisic *** regulatory cascade finely tunes stomatal responses,ultimately leading to enhanced drought *** findings underscore the importance of tonoplast Ca^(2+)-ATPase in manipulating stomatal behavior and improving drought ***,these results highlight the diverse functions of tonoplast-localized ACA11 in response to different conditions,emphasizing its potential for future applications in plant enhancement.

关键词： ACA11 drought guard cells modeling stomata

钨粉经高压扭转后韧性及热稳定性观察（英文）

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2016年第12期45卷 3089-3094页

作者：梁辰李萍田野李凌风薛克敏赵蒙合肥工业大学安徽合肥230009

采用高压扭转法,在440℃对纯钨进行大塑性变形(HPT)。硬度测试表明试样表面纯钨经高压扭转后硬度HV高达11 500 MPa。差热分析(DSC)结果表明等效应变较小的试样再结晶温度较高(高于1450℃),等效应变较大的试样再结晶温度较低(约800℃)。... 详细信息

采用高压扭转法,在440℃对纯钨进行大塑性变形(HPT)。硬度测试表明试样表面纯钨经高压扭转后硬度HV高达11 500 MPa。差热分析(DSC)结果表明等效应变较小的试样再结晶温度较高(高于1450℃),等效应变较大的试样再结晶温度较低(约800℃)。XRD分析结果表明试样晶格应变达0.35%,晶格常数达0.3177 nm,位错密度达2.4×10^(15) m^(-2)。高压扭转可以使纯钨在低温下实现固结并具有高强度,一定的韧性和热稳定性。

关键词：大塑性变形固结韧性热稳定性位错

在线全文

学校读者我要写书评

暂无评论

螺杆加工塑料时熔体流动的数值模拟

机械工程学报 2011年第24期47卷 50-56页

作者：李凌丰刘际轩茅旭飞浙江大学机械工程学系杭州310027

为了解螺杆加工塑料时多因素交变作用下熔融塑料在螺槽中的流动状况,结合塑化时熔融塑料在螺槽中的受力、运动情况建立物理模型,推导基于时间过程的控制熔融塑料流动的偏微分方程,包括连续性方程、动量方程、本构方程。利用有限差分法... 详细信息

为了解螺杆加工塑料时多因素交变作用下熔融塑料在螺槽中的流动状况,结合塑化时熔融塑料在螺槽中的受力、运动情况建立物理模型,推导基于时间过程的控制熔融塑料流动的偏微分方程,包括连续性方程、动量方程、本构方程。利用有限差分法离散偏微分方程得到代数方程组,通过数值计算方法,求解得到加工低密度聚乙烯(Low density polyethylene,LDPE)时熔融塑料在螺槽中流动的速度分布、切应力分布、压力分布。以工程中实际应用的螺杆参数为例计算,分析计算结果发现以下规律:在螺槽左下角和右下角部位熔融塑料流动速度和切应力基本为0;熔融塑料在螺槽中作螺旋形的总体运动,并受不同方向的交变切应力、压力作用。这些规律为改善设备性能和提高塑料加工质量提供指导作用。

关键词：螺槽熔融塑料流动控制方程速度场应力场

UHMWPE纤维混凝土动态压缩力学性能研究

在线全文

学校读者我要写书评

暂无评论

振动与冲击 2017年第8期36卷 92-96页

作者：张玉武晏麓晖李凌锋国防科技大学指挥军官基础教育学院长沙410072 诺丁汉大学工程学院

试验研究了一种捻制超高分子量聚乙烯(UHMWPE)纤维增强的新型纤维混凝土动态压缩力学性能。研制了4种纤维体积掺量(0.3%、0.5%、0.7%、1.0%)的C70等级纤维混凝土,采用Φ100 mm分离式霍普金森压杆进行冲击压缩试验,研究了纤维混凝土在140... 详细信息

试验研究了一种捻制超高分子量聚乙烯(UHMWPE)纤维增强的新型纤维混凝土动态压缩力学性能。研制了4种纤维体积掺量(0.3%、0.5%、0.7%、1.0%)的C70等级纤维混凝土,采用Φ100 mm分离式霍普金森压杆进行冲击压缩试验,研究了纤维混凝土在140~255 s^(-1)应变率下的动态压缩力学性能。试验结果表明:UHMWPE纤维混凝土抗压强度、峰值应变和弹性模量具有明显的应变率敏感性;纤维混凝土抗压强度应变率敏感性弱于素混凝土,但其弹性模量应变率敏感性强于素混凝土;动态强度增长因子与应变率对数呈线性关系,具体关系与纤维掺量相关。

关键词： UHMWPE 纤维混凝土动态压缩性能动态强度试验

基于Metaball的曲面约束变形模型及应用

在线全文

学校读者我要写书评

暂无评论

计算机研究与发展 2006年第4期43卷 688-694页

作者：李凌丰谭建荣陈远朋浙江大学CAD&CG国家重点实验室杭州310027

结合曲面变形技术和Metaball原理,提出了基于Metaball的曲面约束变形模型,将Metaball的势函数表达曲面变形的约束,用它去作用于待变形曲面,通过调整Metaball势函数的约束中心、作用半径、偏移等参数控制曲面的预期变形效果,利用骨架卷... 详细信息

结合曲面变形技术和Metaball原理,提出了基于Metaball的曲面约束变形模型,将Metaball的势函数表达曲面变形的约束,用它去作用于待变形曲面,通过调整Metaball势函数的约束中心、作用半径、偏移等参数控制曲面的预期变形效果,利用骨架卷积获得平坦光滑的曲面.讨论了约束关系、单个约束的影响、控制约束的相互影响等问题,并举例说明了这个模型的机理和应用.

关键词：曲面变形 Metaball(元球) 势函数骨架卷积

Additives strategies to improving cycling stability of li metal batteries by modifying electrode electrolyte interphases

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2024年第2期34卷 338-344页

作者： Yuan li Pengfei Huang Chunyu Cui Xiaoyuan Ma li Chen Zekun li linhai li Yuhong Tian School of Biological and Chemical Engineering Guangxi University of Science and Technology School of College of Chemistry and Chemical Engineering Hunan University Isky Future Energy Institute

li metal batteries（LMBs） have attracted much attention due to the ultra-high theoretical capacity of the li metal anode（LMA）.However,the uncontrollable dendrites growth and low coulombic efficiency hinder their practical ***,we explore 3,5-difluoropyridine（2F-BD） as a novel electrolyte additive to enable highperformance *** 2F-BD additive participates in and modifies the solvation structure of li ions by reducing the coordinated number of PF6-at the electrode surface,leading to the formation of a liF and li3N-rich solid electrolyte interphase（SEI）.The liF component increases the robustness of SEI and suppresses the formation of li dendrites,while the li3N component facilitates the transportation and reaction kinetics of li *** a result,the li‖li symmetric cell presents a stable cycling performance of up to 500 h at a current density of 1 mA *** coupling with liFePO4cathode,the obtained full cell achieves high specific capacities of 106.06 mA h g-1and 84.98 mA h g-1at 2.55 mA cm-2and 5.10 mA cm-2,respectively,and maintains a high capacity retention of84.0% after 1000 cycles at 0.13 mA cm-2,with an average cycling CE of 99.58%.

关键词： Electrolyte additive li dendrites li metal batteries liF and li3N-Rich electrode-electrolyte interphase liFePO4 cathode

台湾青年世代政治参与研究:2008-2018

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

世界经济与政治论坛 2019年第6期 118-133页

作者：张文雅李凌风中国社会科学院马克思主义研究院 100732 台湾政治大学国家发展研究所

青年作为社会发展的未来,其对政治关心与参与程度将影响社会发展的走向。台湾青年一代的发展关乎着两岸关系的未来。近十年来台湾青年世代从政热度不断增长,直接影响了两岸经贸与文化层面的交流,以及未来政治对话的社会基础,更成为两岸... 详细信息

青年作为社会发展的未来,其对政治关心与参与程度将影响社会发展的走向。台湾青年一代的发展关乎着两岸关系的未来。近十年来台湾青年世代从政热度不断增长,直接影响了两岸经贸与文化层面的交流,以及未来政治对话的社会基础,更成为两岸关系的新变数。结合台湾当代社会发展现状,以近十年台湾"中央选举委员会"数据库数据为基础,整理分析2008-2018年以来所有大型选举中青年世代参选与当选的现状与缘由,展望台湾青年世代政治参与的未来与趋势,以期为认识台湾政治生态和两岸关系走向提供参考。

关键词：台湾青年世代政治参与

Long-term in-situ monitoring of anchoring system and preliminary analysis of monitoring data

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2024年

作者： Luobin Zheng Huiming Tang liangqing Wang Changdong li Chengren Xiong Zongxing Zou Chenlu Wang lingfeng Zhu Yifan Zhang Faculty of Engineering， China University of Geosciences Badong National Observation and Research Station of Geohazards，China University of Geosciences

The geological environment in which the reservoir slope is situated is intricate， influenced by factors such as precipitation and fluctuations in reservoir water levels. Furthermore， the anchoring structure embedded within the rock mass of the slope undergoes corrosion and deterioration due to these factors， resulting in a highly complex interaction process between the slope rock mass and the anchoring structure. The long-term safety of rock-anchored structure systems is closely tied to the construction and safe operation of reservoirs， as both internal and external factors play a role in ensuring their stability. The present study aims to investigate this intricate issue by designing and establishing an on-site comprehensive multi-field information monitoring platform. The multi-site information monitoring platform comprises three components， namely the landslide monitoring system， anchor structure monitoring system， and data management system. The landslide monitoring system encompasses the surveillance of surface deformation， subsurface deformation， and environmental factors. The monitoring system for anchor structures includes the monitoring of prestress， anchor cable strain， and corrosion status of steel bars. The establishment of a preliminary system for data transmission and management has been accomplished. The current monitoring results indicate that the health condition of the tested anchor cables is satisfactory， and the strain and corrosion status are influenced by the design of the anchor cable structure. The platform is currently undergoing enhancements with the incorporation of cutting-edge anchoring structure design and monitoring equipment.

关键词：

Peroxidase-like nanozyme based microenvironment-responsive injectable hydrogel for bacteria-infected wound healing

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2024年第10期67卷 3247-3260页

作者： ZHOU Wei li XiaNan TANG MengCheng PAN lingfeng WANG BeiBei ZHANG Hao ZHANG Han WANG ShiBo KONG XiangDong Institute of Smart Biomaterial Materials School of Materials Science and EngineeringZhejiang University of Science & Technology Zhejiang-Mauritius Joint Research Center for Biomaterials and Tissue Engineering Zhejiang University of Science & Technology

Hydrogel stands out as one of the most attractive wound dressings due to its excellent moisturizing properties and capacity to absorb wound exudates. However, conventional hydrogel dressings often lack responsiveness to the microenvironment, merely acting as protective barriers for the wound. Consequently, they exhibit limited effectiveness in preventing infection and facilitating wound repair. To address these problems, we have developed a multifunctional injectable hydrogel, CF/MS@HG, based on peroxidase-like nanozymes, aiming at rapidly healing bacterial-infected wounds. The hydrogel is mainly composed of oxidized sodium alginate, aminated gelatin, and polylysine, encapsulating MIL-101(CuFe) NPs(CF) and manganese selenide nanoparticles(MnSe2NPs, or MS NPs). After injection, the complex rapidly gelatinizes at the infected wound site through a Schiff base reaction. In vitro experiments have demonstrated the hydrogel's strong adhesion and self-healing ***, CF exhibiting peroxidase(POD)-like activity, catalyzes in situ hydrogen peroxide(H2O2) to generate highly toxic hydroxyl radicals(·OH) within the wound microenvironment, inducing oxidative damage to bacteria. Meanwhile, MS decomposes into H2Se in the slightly acidic wound microenvironment, disrupting bacterial metabolism and inhibiting *** addition of polylysine further enhances the hydrogel's antibacterial properties. In vivo experiments have shown that the hydrogel exhibits excellent biological safety and significantly promotes wound healing. This multifunctional smart hydrogel holds great promise for the treatment of bacterial-infected wounds.

关键词： peroxidase-like nanozyme manganese selenide injectable hydrogel bacterial infection wound healing

同方期刊数据库