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基于GIS的重庆市干旱灾害风险评估与区划

中国农业气象 2007年第1期28卷 100-104页

作者：罗培西华师范大学国土资源学院四川南充637002

以重庆地区的干旱灾害为研究对象,在分析重庆地区干旱灾害气候背景和经济环境的基础上,从干旱灾害发生的成灾环境、灾害发生的可能性、以及承灾体的易损性三个方面选取了地貌、灾害频率、人口、社会经济等评价因子;应用模糊评价法建立... 详细信息

以重庆地区的干旱灾害为研究对象,在分析重庆地区干旱灾害气候背景和经济环境的基础上,从干旱灾害发生的成灾环境、灾害发生的可能性、以及承灾体的易损性三个方面选取了地貌、灾害频率、人口、社会经济等评价因子;应用模糊评价法建立了干旱灾害孕灾背景、灾害危险性、承灾体易损性等数学模型;运用MapInfo Professional软件,通过对属性数据库和图形数据库的操作得到干旱灾害的孕灾背景、灾害危险性、承灾体易损性评价图层,经过图层叠加、斑块合并以及等级划分后得到干旱灾害的风险评估及其区划。

关键词： GIS 重庆市干旱灾害风险评估区划

Synaptotagmins family affect glucose transport in retinal pigment epithelial cells through their ubiquitination-mediated degradation and glucose transporter-1 regulation

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World Journal of Diabetes 2024年第5期15卷 958-976页

作者： Hong Xu Li-Bo Zhang Yi-Yi luo Ling Wang Ye-Pin Zhang pei-Qi Chen Xue-Ying Ba Jian Han Heng luo Department of Ophthalmology The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina Precision Medicine Center of Chuxiong Yi Autonomous Prefecture The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina Department of Endocrinology The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina Department of Pathology The People’s Hospital of Chuxiong Yi Autonomous Prefecture&The Fourth Affiliated Hospital of Dali UniversityChuxiong Yi Autonomous Prefecture 675000Yunnan ProvinceChina

BACKGROUND Synaptotagmins(SYTs)are a family of 17 membrane transporters that function as calcium ion sensors during the release of Ca2+-dependent neurotransmitters and ***,few studies have reported whether members of the SYT family play a role in glucose uptake in diabetic retinopathy(DR)through Ca2+/glucose transporter-1(GLUT1)and the possible regulatory mechanism of *** To elucidate the role of the SYT family in the regulation of glucose transport in retinal pigment epithelial cells and explore its potential as a therapeutic target for the clinical management of *** DR was induced by streptozotocin in C57BL/6J mice and by high glucose medium in human retinal pigment epithelial cells(ARPE-19).Bioinformatics analysis,reverse transcriptase-polymerase chain reaction,Western blot,flow cytometry,ELISA,HE staining,and TUNEL staining were used for *** Six differentially expressed proteins(SYT2,SYT3,SYT4,SYT7,SYT11,and SYT13)were found between the DR and control groups,and SYT4 was highly *** induces SYT4 overexpression,manipulates Ca2+influx to induce GLUT1 fusion with the plasma membrane,promotes abnormal expression of the glucose transporter GLUT1 and excessive glucose uptake,induces ARPE-19 cell apoptosis,and promotes DR *** deficiency inhibits the proteasomal degradation of SYT4 in DR,resulting in SYT4 accumulation and enhanced GLUT1 fusion with the plasma membrane,and these effects were blocked by oe-Parkin ***,dysregulation of the myelin transcription factor 1(Myt1)-induced transcription of SYT4 in DR further activated the SYT4-mediated stimulus-secretion coupling process,and this process was inhibited in the oe-MYT1-treated *** Our study reveals the key role of SYT4 in regulating glucose transport in retinal pigment epithelial cells during the pathogenesis of DR and the underlying mechanism and suggests potential therapeutic targets for clinical DR.

关键词： Diabetic retinopathy Glucose transporter-1 Synaptotagmin 4 Parkin Myelin transcription factor 1

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基于改进的GAC模型图像分割算法

光学技术 2016年第2期42卷 185-192页

作者：杨松罗培罗浩元杨欣湘潭大学信息工程学院湖南湘潭411100

针对图像分割中经典GAC模型无法准确分割拓扑结构变化的凹陷目标、容易穿越深度凹陷的弱边缘轮廓和无法准确分割含噪声目标的问题,通过利用图像灰色关联度、类间方差和经典GAC模型构造新能量函数,提出了一种改进的GAC模型,该模型可增强... 详细信息

针对图像分割中经典GAC模型无法准确分割拓扑结构变化的凹陷目标、容易穿越深度凹陷的弱边缘轮廓和无法准确分割含噪声目标的问题,通过利用图像灰色关联度、类间方差和经典GAC模型构造新能量函数,提出了一种改进的GAC模型,该模型可增强经典GAC模型的边界检测能力,减少分割时间。仿真实验验证了改进的GAC模型的正确性和有效性。

关键词：深度凹陷轮廓弱边界图像噪声 Ostu算法 GAC模型

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航天器综合电子系统通用测试系统设计

哈尔滨工业大学学报 2014年第9期46卷 92-99页

作者：李姗骆培安军社中国科学院大学北京100049 中国科学院空间科学与应用研究中心北京100190 波士顿大学电子与计算机工程系波士顿美国02215

提出了一种接口丰富、可重构扩展的模块化通用测试系统方案.引入开放式柔性测试系统设计方法,基础测试模块使用FPGA作为控制核心,以保证系统硬件柔性化;系统软件采用分层模块化方法设计,通过转换层统一操作系统的接口,以保证系统软件柔... 详细信息

提出了一种接口丰富、可重构扩展的模块化通用测试系统方案.引入开放式柔性测试系统设计方法,基础测试模块使用FPGA作为控制核心,以保证系统硬件柔性化;系统软件采用分层模块化方法设计,通过转换层统一操作系统的接口,以保证系统软件柔性化.并应用PC/104 PLUS与以太网两种总线技术,将测试模块灵活组合成3种本地测试节点模型.本地测试设备以节点的形式通过光纤网络接入测试系统,实现分布式测试系统网络,增强系统兼容性与应用范围,同时保证数据传输安全.真空罐测试和多设备联合测试实验表明该系统有能力适应不同型号任务、不同阶段、不同测试场景的综合电子系统测试工作.

关键词：通用测试系统开放式柔性测试系统分布式系统可重构

Evolutionary mechanism and frequency response of graphite electrode at extreme temperatures

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Nano Research 2024年第8期17卷 7283-7289页

作者： Shanpeng pei Zhiyong Zhang Xiuli Zhang Yan Liu Xiang Han Linshan luo Pengfei Su Chaofei Lan Wei Huang Ziqi Zhang Ming-Sheng Wang Songyan Chen Department of Physics Xiamen UniversityXiamen 361005China Shandong Electric Power Engineering Consulting Institute Corporation Jinan 250031China State Key Lab of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China School of Semiconductor Science and Technology South China Normal UniversityFoshan 528225China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China National Key Laboratory of Integrated Circuits and Microsystems Chongqing 400000China

The battery management system is employed to monitor the external temperature of the lithium-ion battery in order to detect any potential ***,this outside–in detection method often suffers from a lag and is therefore unable to accurately predict the battery’s real-time ***,an inside–out frequency response approach is used to accurately monitor the battery’s state at various temperatures in real-time and correlate it with the solid electrolyte interphase(SEI)evolution of the graphite *** SEI evolution at temperatures of−15,25,60,and 90℃exhibits certain regular characteristics with temperature *** a temperature of−15℃,the Li^(+)-solvent interaction of lithium-ion slowed down,resulting in a significant reduction in *** 25℃,a LiF-rich inorganic SEI was identified as forming,which facilitated lithium-ion ***,high temperatures would induce decomposition of lithium hexafluorophosphate(LiPF_(6))and lithium-ion *** the extreme temperature of 90℃,the SEI would be organic-rich,and Li_(x)P_(y)F_(z),a decomposition product of lithium salts,was further oxidized to Li_(x)PO_(y)F_(z),which led to a surge in the charge-transfer resistance at SEI(R_(sei))and a reduction in Coulombic efficiency(CE).This changing relationship can be recorded in real time from the inside out by electrochemical impedance spectroscopy(EIS)*** provides a new theoretical basis for the structural evolution of lithium-ion batteries and the regular characterization of EIS.

关键词： graphite electrode solid electrolyte interphase(SEI)film extreme temperatures frequency response evolutionary mechanism

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深潜器耐压壳极限强度的模量算法

上海交通大学学报 2014年第4期48卷 498-501,507页

作者：熊志鑫罗培林上海海事大学海洋科学与工程学院上海201306 哈尔滨工程大学船舶工程学院哈尔滨150001

通过引入承压球壳变形的对称性假设,将承受均匀外压球壳的理论表达简化为筒形板及弹性基础梁的数学模型.引入参数,将切线模量理论等多种模量理论统一表达,在材料应力应变曲线的基础上,得到模量因子曲线和相应的解析表达式.以切线模量理... 详细信息

通过引入承压球壳变形的对称性假设,将承受均匀外压球壳的理论表达简化为筒形板及弹性基础梁的数学模型.引入参数,将切线模量理论等多种模量理论统一表达,在材料应力应变曲线的基础上,得到模量因子曲线和相应的解析表达式.以切线模量理论和双模量理论为例,将2种模量理论应用于钛合金球壳的承载力计算,并将计算值与实验结果进行比较,得出模量理论在耐压壳极限强度计算问题上的有效性和适用范围,为深潜器的初步设计提供参考.

关键词：深潜器模量方法极限强度球壳

近代广东侨乡家产分配新形态初探--以两家博物馆馆藏文书为主的分析

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华侨华人历史研究 2021年第4期 72-81页

作者：罗佩玲中国华侨历史博物馆北京100007

论文对中国华侨历史博物馆、江门市博物馆馆藏侨乡契约进行了整理分析,认为这些契约文书是学术界未曾开展研究的新史料,是诠释近代广东农民通过分家析产及多样化的土地交易筹措出洋费用,最终实现出国求财之梦的实证资料,具有重要的学术... 详细信息

论文对中国华侨历史博物馆、江门市博物馆馆藏侨乡契约进行了整理分析,认为这些契约文书是学术界未曾开展研究的新史料,是诠释近代广东农民通过分家析产及多样化的土地交易筹措出洋费用,最终实现出国求财之梦的实证资料,具有重要的学术价值。近代广东侨乡家庭的财产分配发生了转变,出现了与传统家庭分家析产不同的新形态之变迁。人口流动、出国移民不仅引起了侨乡家庭结构的变化,还影响和动摇了族田不能买卖的传统原则,加剧了侨乡的土地流转。多样化的土地交易,帮助侨乡家庭以土地为中介实现资金融通。

关键词：广东契约文书出国移民分家析产土地流转

四川邻水华蓥山大峡谷地质公园地质遗迹资源体系及地学意义

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地球学报 2013年第6期34卷 738-748页

作者：罗培秦子晗孙传敏成都理工大学地球科学学院四川成都610059 西华师范大学国土资源学院四川南充637002

华蓥山大峡谷地质公园是以峡谷、构造和岩溶地貌为代表的风景地貌类地质公园。本文以华蓥山大峡谷地质公园地质遗迹景观资源为基础,以川东褶皱带构造单元、川东平行岭谷地貌单元和上扬子地层分区的部分地层区域为研究视角,构建华蓥山大... 详细信息

华蓥山大峡谷地质公园是以峡谷、构造和岩溶地貌为代表的风景地貌类地质公园。本文以华蓥山大峡谷地质公园地质遗迹景观资源为基础,以川东褶皱带构造单元、川东平行岭谷地貌单元和上扬子地层分区的部分地层区域为研究视角,构建华蓥山大峡谷地质公园地质遗迹资源体系——包括地质(体、层)剖面、古生物活动遗迹、地貌景观、水体景观以及环境地质遗迹5个大类、15个类共100多处地质遗迹景点;通过对各类地质遗迹的特征进行分析,对前人研究进行总结,探讨了地质公园地质遗迹重要的地学意义。研究表明,华蓥山大峡谷地质遗迹在地质构造、地层、岩溶学、水文地质学以及地貌学等领域具有重要的科学价值。

关键词：华蓥山大峡谷地质公园地质遗迹及资源体系地学意义

Cu nanowire array with designed interphases enabling high performance Si anode toward flexible lithium-ion battery

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Nano Research 2024年第3期17卷 1516-1524页

作者： Pengfei Su Ziqi Zhang Linshan luo Zhiyong Zhang Chaofei Lan Yahui Li Shaowen Xu Shanpeng pei Guangyang Lin Cheng Li Xiang Han Wei Huang Songyan Chen Fujian Provincial Key Laboratory of Semiconductors and Applications Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient DevicesDepartment of PhysicsXiamen UniversityXiamen 361005China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China Science and Technology on Analog Integrated Circuit Laboratory Chongqing 400060China Shandong Electric Power Engineering Consulting Institute Co. Ltd.Jinan 250013China

To meet the growing demand for wearable smart electronic devices,the development of flexible lithium-ion batteries(LIBs)is *** is an ideal candidate for the anode material of flexible lithium-ion batteries due to its high specific capacity,low working potential,and earth *** largest challenge in developing a flexible silicon anode is how to maintain structural integrity and ensure stable electrochemical reactions during external *** this work,we propose a novel design for fabricating core–shell electrodes based on a copper nanowire(CuNW)array core and magnetron sputtered Si/C *** nanowire array structure has characteristics of bending under longitudinal stress and twisting under transverse stress,which helps to maintain the mechanical stability of the structure during electrode bending and *** low-temperature annealing generates a small amount of Cu3Si alloy,which enhances the connection strength between Si and the conductive network and solves the poor conductivity problem of Si,which is known as a semiconductor *** unique configuration design of CuNW@Si@C-400℃ leads to stable long cycle performance of 1109 mAh∙g^(-1) after 1000 cycles and excellent rate performance of 500 mAh∙g^(-1) at a current density of 10 A∙g^(-1).Furthermore,the CuNW@Si@C-400℃||LiFePO_(4)(LFP)full battery demonstrates excellent flexibility,with a capacity retention of more than 96%after 100 *** study provides a promising strategy for the development of flexible lithium-ion batteries.

关键词： flexible lithium-ion battery silicon anode magnetron sputtering core–shell electrode Cu nanowire array