检索结果-南通市图书馆

Metal complex catalysts broaden bioorthogonal reactions

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第2期67卷 428-449页

作者： Hanjie Zhang Xiaoyu Qin junping Wang Li ma Tianfeng Chen Department of Chemistry Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and ApplicationsJinan UniversityGuangzhou510632China

Bioorthogonal reactions involving transition metals have diversified applications in imaging,drug development,chemical catalysis and other *** metals used to catalyze the bioorthogonal reaction mainly include ruthenium,palladium,copper,and ***,the great potential for translational applications of bioorthogonal reaction needs to be further expanded and their reaction efficiency should be ***,it is an urgent need for the development of this field to find more suitable catalysts to efficiently catalyze existing biological orthogonal reactions and expand the types of biological orthogonal ***,this review not only summarizes those transition metal complexes-based catalysts participating in bioorthogonal reaction and some bioorthogonal reactions involving transition metals inside the cells,but also sheds light into the discovery of new transition metal complexes and their future development in applications.

关键词： transition metal complexes bioorthogonal reactions biological applications

The structural,magnetic,and optical properties of ZnO (0001) wafers implanted with Co ions

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2010年第10期53卷 1819-1822页

作者： LI TianJing LI GongPing CHEN JingSheng GAO XingXin PAN XiaoDong ma junping WANG YunBo School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China Department of material Science and Engineering National University of SingaporeSingapore 119260

The ion implantation technique was employed to study the structural,magnetic,and optical properties of Co-doped crystalline *** photoluminescence measurements indicated that the center of green emission of implanted samples shifts gradually from 510 nm to 531 nm with an increase of Co *** implanted samples are ferromagnetic at room temperature with a saturation magnetization from 6.89×10-5 to 2.31×10-4 *** possible mechanisms on the observed ferromagnetism were discussed.

关键词： Co ZnO ion implantation ferromagnetism

The maDS-box gene RhAGL6 plays a master role in regulating the receptacle malformation in rose at low temperature

在线全文

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2024年第5期10卷 1214-1229页

作者： Weikun Jing Shuai Zhang Qingcui Zhao Yang Liu Liangjun Zhao junping Gao Nan ma Xiaofeng Zhou Yonghong Li School of Food and Drug Shenzhen PolytechnicShenzhen 518055China Department of Ornamental Horticulture College of HorticultureChina Agricultural UniversityBeijing 100193China Postdoctoral Innovation Practice Base Shenzhen PolytechnicShenzhen 518055China Flower Research Institute of Yunnan Academy of Agricultural Sciences KunmingYunnan 650205China

Low temperature usually results in the developmental deformity of flower organs,immensely affecting the quality of rose ***,it's largely unknown about the regulatory mechanisms activated by low ***,we used a low temperature-sensitive Rosa hybrida cv.‘Peach Avalanche’to screen a maDS-box gene RhAGL6 via conjoint analysis between RNA sequencing(RNA-seq)and whole-genome bisulfite sequencing(WGBS).Furthermore,we found that low temperature induced the hypermethylation and elevated histone 3 lys-27 trimethylation(H3K27me3)level on the RhAGL6 promoter,leading to decreased RhAGL6 *** addition,RhAGL6 silencing resulted in the formation of abnormal *** also found that the levels of gibberellins(GA3)and abscisic acid(ABA)in the receptacle under low temperature were lower and higher,respectively,than under normal *** activity analysis revealed that GA3 significantly activated RhAGL6 promoter activity,whereas ABA inhibited ***,we propose that RhAGL6 regulates rose receptacle development by integrating epigenetic regulation and phytohormones signaling at low temperature.

关键词： Rosa hybrida Low temperature RhAGL6 Receptacle development DNA methylation H3K27me3 Phytohormone

Green-Synthetic Multifunctional Polymer Micelles with Shell Embedded magnetic Nanoparticles for Theranostic Applications

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

Green-Synthetic Multifunctional Polymer Micelles with Shell ...

2013年全国高分子学术论文报告会

作者： Li Yongyong ma junping Dong Haiqing The Institute for Biomedical Engineering and Nano Science Tongji University

＜正＞The objective of this study is to design and develop a green-synthetic,multifunctional hybrid micelles with shell embedded magnetic nanoparticles for theranostic applications.

关键词： green synthesis multifunction hybrid micelles MRI imaging theranostics

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

全面依法治国的现实基础与可行路径探析

学术前沿 2018年第5期 72-75页

作者：马俊平西北民族大学

全面依法治国是一项长期而系统的攻坚工程,它来源于实践,也适应了现实需要。本文从政治、经济、社会三个层面分析了全面依法治国的现实基础,并在此基础上对全面依法治国的可行性路径进行了探析,以期能够贡献决策建议,从而有力推动法治... 详细信息

全面依法治国是一项长期而系统的攻坚工程,它来源于实践,也适应了现实需要。本文从政治、经济、社会三个层面分析了全面依法治国的现实基础,并在此基础上对全面依法治国的可行性路径进行了探析,以期能够贡献决策建议,从而有力推动法治情感、法治精神以及法治实践逐步成为法治中国的新常态。

关键词：全面依法治国法治中国新常态

转向限制网络中基于预知时间的快递车辆在线揽件路径选择研究

在线全文

学校读者我要写书评

暂无评论

系统工程理论与实践 2017年第9期37卷 2394-2402页

作者：马军平徐寅峰吴腾宇西安工业大学经济管理学院西安710021 西安交通大学管理学院西安710049 重庆邮电大学经济管理学院重庆400065

针对现实快递服务网络结构上的转向限制及待服务需求出现后不能立即接受服务的特征,将预知时间引入到在线旅行商问题中,提出以服务总时间最小为目标的转向限制网络中基于预知时间的快递车辆在线揽件路径选择问题.在半路径上提出了WBR-d... 详细信息

针对现实快递服务网络结构上的转向限制及待服务需求出现后不能立即接受服务的特征,将预知时间引入到在线旅行商问题中,提出以服务总时间最小为目标的转向限制网络中基于预知时间的快递车辆在线揽件路径选择问题.在半路径上提出了WBR-dd策略,在路径上提出了REPdd略,在一般网络上提出了PAH-dd策略,证明了上述在线策略的竞争比,分析了该问题竞争比的下界.结果表明预知信息越多,在线算法将获得更优的竞争性能.

关键词：在线旅行商问题预知信息转向限制网络在线算法竞争比

在线全文

学校读者我要写书评

暂无评论

开槽式预拌混凝土楼板裂缝的防控研究

混凝土 2018年第6期 127-131页

作者：马军平国网陕西省电力公司经济技术研究院陕西西安710065

以开槽式的预拌混凝土为基础,对于施工建筑期间内楼板的裂缝进行研究分析,深入的探究导致裂缝产生的因素以及防止裂缝产生的方法。楼板裂缝试验表明,在施工过程和楼房完工后的维护工作以及外加剂的掺杂使用对于预拌混凝土楼板的质量具... 详细信息

以开槽式的预拌混凝土为基础,对于施工建筑期间内楼板的裂缝进行研究分析,深入的探究导致裂缝产生的因素以及防止裂缝产生的方法。楼板裂缝试验表明,在施工过程和楼房完工后的维护工作以及外加剂的掺杂使用对于预拌混凝土楼板的质量具有极大的影响作用;当我们进行模拟楼板的加载试验,结果显示,当楼板所承受的开裂荷载相同的时候,当我们把模拟楼板进行浇筑步骤之后,即使用塑料布膜对模拟楼板进行遮掩覆盖,使其可以充分的保持水分,观察该模拟楼板的裂缝宽度和长度,可以清晰地发现裂缝减小的现象;当楼板制造时养护方式不到位和使用外加剂掺量过多时,亦会造成楼板的裂缝增多。在混凝土配筋率、强度等级、养护条件等因素不变时,混凝土自身收缩可在一定范围内进行控制,当外加剂的掺量不达标时,会造成混凝土塑性收缩而出现裂缝。建议在混凝土初凝前后,进行二次抹浆或二次振捣,这一个二次步骤会将楼板内部的毛细管结构彻底破坏,从而很大程度上增加了混凝土表面的密度和实度,当密度实度提高时,也会减缓混凝土楼板内部的水分流失,从而使楼板的裂缝出现频率降低。

关键词：裂缝模拟混凝土养护

Genetic and biological properties of H9N2 avian influenza viruses isolated in central China from2020 to 2022

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第8期23卷 2778-2791页

作者： Libin Liang Yaning Bai Wenyan Huang Pengfei Ren Xing Li Dou Wang Yuhan Yang Zhen Gao Jiao Tang Xingchen Wu Shimin Gao Yanna Guo Mingming Hu Zhiwei Wang Zhongbing Wang Haili ma junping Li College of Veterinary Medicine Shanxi Agricultural UniversityJinzhong 030801China Shanxi Provincial Animal Disease Prevention and Control Center Taiyuan 030000China

The H9N2 subtype of avian influenza virus(AIV)is widely prevalent in poultry and wild birds globally,and has become the predominant subtype circulating in poultry in *** H9N2 AIV can directly or indirectly(by serving as a"donor virus")infect humans,posing a significant threat to public ***,there is a lack of in-depth research on the prevalence of H9N2 viruses in Shanxi Province,central *** this study,we isolated 14 H9N2 AIVs from October 2020 to April 2022 in Shanxi Province,and genetic analysis revealed that these viruses belonged to 7 different *** study on animals revealed that the H9N2 strains we identified displayed high transmission efficiency among chicken populations,and exhibited diverse replication abilities within these *** viruses could replicate efficiently in the lungs of mice,with one strain also demonstrating the capacity to reproduce in organs like the brain and *** the cellular level,the replication ability of different H9N2 strains was evaluated using plaque formation assays and multi-step growth curve assays,revealing significant differences in the replication and proliferation efficiency of the various H9N2 viruses at the cellular *** antigenicity analysis suggested that these isolates could be classified into 2 separate antigenic *** research provides crucial data to help understand the prevalence and biological characteristics of H9N2 AIVs in central *** also highlights the necessity of enhancing the surveillance of H9N2 AIVs.

关键词： avian influenza virus H9N2 central China pathogenicity antigenicity

Genetic and pathogenic characterization of new infectious bronchitis virus strains in the GVI-1 and GI-19 lineages isolated in central China

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第7期23卷 2407-2420页

作者： Yuhan Yang Dou Wang Yaning Bai Wenyan Huang Shimin Gao Xingchen Wu Ying Wang Jianle Ren Jinxin He Lin Jin Mingming Hu Zhiwei Wang Zhongbing Wang Haili ma junping Li Libin Liang College of Veterinary Medicine Shanxi Agricultural UniversityJinzhong 030801China Shanxi Provincial Animal Disease Prevention and Control Center Taiyuan 030000China

Avian infectious bronchitis(IB)is a highly contagious infectious disease caused by infectious bronchitis virus(IBV),which is prevalent in many countries worldwide and causes serious harm to the poultry *** present,many commercial IBV vaccines have been used for the prevention and control of IB;however,IB outbreaks occur *** this study,two new strains of IBV,SX/2106 and SX/2204,were isolated from two flocks which were immunized with IBV H120 vaccine in central *** and recombination analysis indicated that SX/2106,which was clustered into the GI-19 lineage,may be derived from recombination events of the GI-19 and GI-7 strains and the LDT3-A *** analysis showed that SX/2204 belongs to the GVI-1 lineage,which may have originated from the recombination of the GI-13 and GVI-1 strains and the H120 *** virus cross-neutralization test showed that the antigenicity of SX/2106 and SX/2204 was different from *** experiments found that both SX/2106 and SX/2204 could replicate effectively in the lungs and kidneys of chickens and cause disease and death,and H120 immunization could not provide effective protection against the two IBV *** is noteworthy that the pathogenicity of SX/2204 has significantly increased compared to the GVI-1 strains isolated previously,with a mortality rate up to 60%.Considering the continuous mutation and recombination of the IBV genome to produce new variant strains,it is important to continuously monitor epidemic strains and develop new vaccines for the prevention and control of IBV epidemics.

关键词： infectious bronchitis virus GI-19 lineage GVI-1 lineage complete genome recombination pathogenicity