云南高校图书馆联盟文献共享服务平台- GEM

GEM: 作品数：635被引量：1486H指数：17; 导出分析报告; 相关领域：经济管理医药卫生更多>>; 相关作者：陈元柏周健荣李玉兰周意李澄更多>>; 相关机构：中国科学院清华大学中国科学院大学兰州大学更多>>; 相关期刊：更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划国家社会科学基金国家高技术研究发展计划更多>>

乡村振兴与新生代农民工返乡创业:耦合关系、影响因素与实现路径: 《北华大学学报(社会科学版)》2025年第2期56-66,153,共12页张秀娥滕欣宇; 国家社会科学基金项目“乡村振兴战略下农业企业绿色创业导向的测量、驱动机制及对绩效的影响研究”(20BGL059)的阶段性研究成果。; 2024年中央一号文件指出:“推进中国式现代化,必须坚持不懈夯实农业基础,推进乡村全面振兴。”新生代农民工是发展乡村新质生产力的主力军,新生代农民工返乡创业不仅为助力农村经济发展提供新引擎,更为推进乡村全面振兴注入新动能。因而...; 关键词：乡村振兴新生代农民工返乡创业 GEM概念框架农业农村现代化新质生产力

Photoredox-catalyzed synthesis of α,α-difluoromethyl-β-alkoxysulfones from sulfur dioxide: 《Chinese Chemical Letters》2025年第3期248-252,共5页Minjun Yin Yuhui Lin Manli Zhuang Wei Xiao Jie Wu; Financial support from National Natural Science Foundation of China(Nos.22201202,22171206 and 22371201);Natural Science Foundation of Zhejiang Province(No.LZ23B020001);Open Foundation of Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers(No.E22307);Open Research Fund of School of Chemistry and Chemical Engineering,Henan Normal University(No.2020ZD04);Open Research Fund of Key Laboratory of the Ministry of Education for Advanced Catalysis Materials and Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces,Zhejiang Normal University。; A photoredox-catalyzed synthesis ofα,α-difluoromethyl sulfones from sulfur dioxide with readily available gem–difluoroalkenes is reported.This protocol features mild reaction conditions,broad substrate scope and go...; 关键词：Sulfur dioxide gem-Difuloroalkenes Photoredox catalysis α α-Difluoromethyl-β-alkoxysulfones Arylsulfonyl radical

Enabling Access to 3-gem-Difluorovinyl Lactams via Zn-Mediated Sequential Single Electron Reductive Hydrodehalogenation: 《Chinese Journal of Chemistry》2025年第3期255-260,共6页Jia Zheng Xuran Liu Jiawen Yin Shuaikang Li Juanjuan Zhang Weigao Hu; the Guangdong Basic and Applied Basic Research Foundation(2023A1515012657,2024A1515012128);Scientific Research Project of General Universities in Guangdong Province(2022KTSCX046);Zhanjiang Ocean Young Talent Innovation Project(2023E0002,2022E05008);the Fifth-level Research Fund of Guangdong Medical University(4RS23002a,4SG24248G);the Third-level Research Fund of Guangdong Medical University(4RS23002d,4SG22247G);Songshan Lake Medical and Engineering Integration Innovation Project of Guangdong Medical University(4SG22308P)for support.; Herein,we describe a direct route for the synthesis of 3-gem-difluorovinyl lactams through Zn-mediated reductive hydrodehalogenation.Importantly,by using inexpensive deuterium oxide(D_(2)O),the high value-added vicina...; 关键词：3-gem-Difluorovinyl lactams Dideuterium compounds Zn-mediated Single electron reduction HYDRODEHALOGENATION Radicals Lewis acidity Zinc cation

Guangzhou:Gem of Lingnan: 《China Pictorial》2025年第2期42-43,共2页Zheng Meichen; Guangzhou,the historic capital of Lingnan and a trading hub for over a millennium,seamlessly intertwines its rich heritage with the vibrancy of contemporary life.It is a place to get immersed in the rich flavors of lo...; 关键词：TRADING offering GUANGZHOU

Xiamen in Focus Film and TV industry flourishes in southeast China’s coastal gem: 《Beijing Review》2025年第1期42-43,共2页Li Qing; In December 1905,a silent film was screened on Kulangsu Island in Xiamen,Fujian Province,which is the city's first recorded encounter with film,and the beginning of the connection between the city and the film industr...; 关键词：XIAMEN SOUTHEAST COASTAL

Transition metal-free Csp^(3)-Csp^(3) bond-forming reactions of N-tosylaziridines and gem-diborylalkanes: 《Green Synthesis and Catalysis》2024年第4期329-333,共5页Pu-Zhang Zi Quan-Hong Zhao Zhan-Cai Ma Xiao-Lin Ren Xing-Bang Liu Yi-Wei Qiao Lin-Wen Wei Song Liu Yuan Huang; financial support provided by the National Natural Science Foundation of China(No.22001203).; The incorporation of additional Csp^(3) atoms into candidate drugs may enhance their pharmacological properties.Nevertheless,it remains challenging to construct desired Csp^(3)-Csp^(3) bonds efficiently and practicall...; 关键词：Csp^(3)-Csp^(3)bond formation Transition metal-free N-tosylaziridines gem-diborylalkanes Ring-opening reactions

岩溶碳汇对气候和土地利用变化的响应研究--以湖北省恩施州为例: 《湖北民族大学学报（自然科学版）》2024年第3期419-425,434,共8页李万阳宋鄂平潘炳臣梁小龙李陈王钰鑫; 湖北民族大学校内科研项目(XN2320)。; 为研究气候和土地利用变化情况下岩溶碳汇通量的演变趋势及响应,基于CO_(2)通量全球侵蚀模型(global erosion model for CO_(2)fluxes,GEM-CO_(2))计算2000—2020年恩施州岩溶碳汇通量的时空动态变化,并分析气候和土地利用变化对岩溶碳...; 关键词：岩溶作用碳汇 GEM-CO 2 土地利用碳酸盐岩时空演变恩施州

Photocatalytic C(sp^(3))-H gem-Difluoroallylation and Alkylation with Alkenes via a Base-Assisted Formal 1,2-Hydrogen Atom Transfer of Amidyl Radicals: 《Chinese Journal of Chemistry》2024年第18期2203-2210,共8页Meifang Tang Bingbing Feng Yanyang Bao Zhongtian Xu Chao Huang Hanliang Zheng Gangguo Zhu Yanan Wang Zheliang Yuan; We thank the National Natural Science Foundation of China(22001233);Zhejiang Provincial Ten Thousand Talent Program(2020R52021)and Zhejiang Normal University for financial support.; Compared to well-established 1,5-HAT of N-centered radicals,the synthetic applications of 1,2-HAT process were scarce due to the high barrier and constrained three-membered transition state.Here,we have developed a no...; 关键词：1 2-Hydrogen atom transfer Amidyl radicals gem-Difluoroallylation ALKENES Photocatalysis Defluoroalkylation

岩石风化碳汇遥感估算及其时空变化分析: 《中国岩溶》2024年第4期727-741,共15页张宇罗为群刘美玲李梦琦张莉陈芳芳张扬岑陈蕊; 国家重点研发课题(2022YFF1300702);中国地质调查局项目(DD20221820);广西岩溶动力学重大科技创新基地开放课题(KBL202103)。; 岩石风化过程吸收的CO_(2)是全球碳循环“遗漏汇”中的一部分,岩石风化碳汇估算对掌握区域与全球碳汇效应及与全球气候变化的关系具有重要意义。文章选取贵州省作为实验区域,以20年作为时间跨度,收集了气象、岩性等数据,首先借助动态时...; 关键词：岩溶碳汇 DTW GEM-CO_(2)模型 Mann-Kendall趋势检验

用于GEM-TPC探测器读出芯片的10 bit20 MSPS SAR ADC设计: 《电子科技大学学报》2024年第4期481-486,共6页孙志坤千奕杨鸣宇佘乾顺赵红赟蒲天磊陆伟建刘政强张家瑞; 国家自然科学基金(11975293)。; 随着大面积气体电子倍增器——时间投影室探测器的不断发展,其对读出电子学的密度和集成度要求越来越高。基于180 nm的CMOS工艺设计完成了一款10 bit、20 MSPS的逐次逼近寄存器型模数转换器原型芯片。利用该芯片结合模拟前端模块和数字...; 关键词：GEM-TPC ASIC SAR ADC 自举开关动态比较器异步SAR逻辑

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