近年来我国对新污染物治理的关注度持续上升,新烟碱类农药作为众多新污染物中的一个小分支,因其在全球范围内的广泛应用及其独特的毒性特征,已在环境介质中普遍存在,且对生态系统乃至人类健康构成了潜在的威胁,因此了解该领域的研究进...近年来我国对新污染物治理的关注度持续上升,新烟碱类农药作为众多新污染物中的一个小分支,因其在全球范围内的广泛应用及其独特的毒性特征,已在环境介质中普遍存在,且对生态系统乃至人类健康构成了潜在的威胁,因此了解该领域的研究进展和热点演变至关重要。本文旨在运用文献计量学手段,对2000-2023年Web of Science(WoS)数据库收录的新烟碱类农药毒性相关文献进行全面分析,利用VOSviewer和CiteSpace等可视化软件绘制知识图谱。结果表明:2000-2023年新烟碱类农药毒性研究的发文量总体趋势相对稳定,且呈增长趋势,文献被引次数也逐年攀升。研究成果多发表在Science of the Total Environment,环境科学与生态学是发文量最多的学科领域,GOULSOND是最高产作者,中国和中国农业科学研究院分别是最高产的国家和机构。进一步的研究揭示,当前研究的热点主要围绕新烟碱类农药及其代谢产物在环境中的暴露情况、对昆虫等非目标生物的毒性作用以及深入到分子层面的毒性机制等方面展开,但关于新烟碱类农药在不同环境介质中的迁移、转化过程及长期累积所带来的毒性效应,以及它们对非靶标生物可能产生的联合毒性、慢性毒性,乃至通过食物链引发的累积毒性等复杂问题,尚且不足,亟需在未来的研究中加以填补和深化。展开更多
Objective Viral encephalitis is an infectious disease severely affecting human health.It is caused by a wide variety of viral pathogens,including herpes viruses,flaviviruses,enteroviruses,and other viruses.The laborat...Objective Viral encephalitis is an infectious disease severely affecting human health.It is caused by a wide variety of viral pathogens,including herpes viruses,flaviviruses,enteroviruses,and other viruses.The laboratory diagnosis of viral encephalitis is a worldwide challenge.Recently,high-throughput sequencing technology has provided new tools for diagnosing central nervous system infections.Thus,In this study,we established a multipathogen detection platform for viral encephalitis based on amplicon sequencing.Methods We designed nine pairs of specific polymerase chain reaction(PCR)primers for the 12 viruses by reviewing the relevant literature.The detection ability of the primers was verified by software simulation and the detection of known positive samples.Amplicon sequencing was used to validate the samples,and consistency was compared with Sanger sequencing.Results The results showed that the target sequences of various pathogens were obtained at a coverage depth level greater than 20×,and the sequence lengths were consistent with the sizes of the predicted amplicons.The sequences were verified using the National Center for Biotechnology Information BLAST,and all results were consistent with the results of Sanger sequencing.Conclusion Amplicon-based high-throughput sequencing technology is feasible as a supplementary method for the pathogenic detection of viral encephalitis.It is also a useful tool for the high-volume screening of clinical samples.展开更多
With the rapid development of the aviation industry,the development of intelligent manufacturing equipment represented by composite robots has been paid close attention by the aviation industry.Based on the analysis o...With the rapid development of the aviation industry,the development of intelligent manufacturing equipment represented by composite robots has been paid close attention by the aviation industry.Based on the analysis of the background and main structure function of composite robots,this paper focuses on the analysis of key technologies such as composite robot hardware design,visual sensing and planning system,integrated control of‘hands,feet,and eyes',multi-robot collaborative operation,and safety.The typical applications of composite robots in aviation intelligent manufacturing such as automatic drilling and connection of aircraft,aircraft surface spraying and finishing,parts handling,aircraft measurement,and inspection are presented.The development trends such as standardization of composite robots,integration of‘5G+cloud computing+AI',and fusion of intelligent sensors are proposed.展开更多
文摘近年来我国对新污染物治理的关注度持续上升,新烟碱类农药作为众多新污染物中的一个小分支,因其在全球范围内的广泛应用及其独特的毒性特征,已在环境介质中普遍存在,且对生态系统乃至人类健康构成了潜在的威胁,因此了解该领域的研究进展和热点演变至关重要。本文旨在运用文献计量学手段,对2000-2023年Web of Science(WoS)数据库收录的新烟碱类农药毒性相关文献进行全面分析,利用VOSviewer和CiteSpace等可视化软件绘制知识图谱。结果表明:2000-2023年新烟碱类农药毒性研究的发文量总体趋势相对稳定,且呈增长趋势,文献被引次数也逐年攀升。研究成果多发表在Science of the Total Environment,环境科学与生态学是发文量最多的学科领域,GOULSOND是最高产作者,中国和中国农业科学研究院分别是最高产的国家和机构。进一步的研究揭示,当前研究的热点主要围绕新烟碱类农药及其代谢产物在环境中的暴露情况、对昆虫等非目标生物的毒性作用以及深入到分子层面的毒性机制等方面展开,但关于新烟碱类农药在不同环境介质中的迁移、转化过程及长期累积所带来的毒性效应,以及它们对非靶标生物可能产生的联合毒性、慢性毒性,乃至通过食物链引发的累积毒性等复杂问题,尚且不足,亟需在未来的研究中加以填补和深化。
基金supported by the National Key Research and Development Program(grant number:2022YFC2305304).
文摘Objective Viral encephalitis is an infectious disease severely affecting human health.It is caused by a wide variety of viral pathogens,including herpes viruses,flaviviruses,enteroviruses,and other viruses.The laboratory diagnosis of viral encephalitis is a worldwide challenge.Recently,high-throughput sequencing technology has provided new tools for diagnosing central nervous system infections.Thus,In this study,we established a multipathogen detection platform for viral encephalitis based on amplicon sequencing.Methods We designed nine pairs of specific polymerase chain reaction(PCR)primers for the 12 viruses by reviewing the relevant literature.The detection ability of the primers was verified by software simulation and the detection of known positive samples.Amplicon sequencing was used to validate the samples,and consistency was compared with Sanger sequencing.Results The results showed that the target sequences of various pathogens were obtained at a coverage depth level greater than 20×,and the sequence lengths were consistent with the sizes of the predicted amplicons.The sequences were verified using the National Center for Biotechnology Information BLAST,and all results were consistent with the results of Sanger sequencing.Conclusion Amplicon-based high-throughput sequencing technology is feasible as a supplementary method for the pathogenic detection of viral encephalitis.It is also a useful tool for the high-volume screening of clinical samples.
基金the National Key Research and Development Program of China(No.2022YFB4700400)。
文摘With the rapid development of the aviation industry,the development of intelligent manufacturing equipment represented by composite robots has been paid close attention by the aviation industry.Based on the analysis of the background and main structure function of composite robots,this paper focuses on the analysis of key technologies such as composite robot hardware design,visual sensing and planning system,integrated control of‘hands,feet,and eyes',multi-robot collaborative operation,and safety.The typical applications of composite robots in aviation intelligent manufacturing such as automatic drilling and connection of aircraft,aircraft surface spraying and finishing,parts handling,aircraft measurement,and inspection are presented.The development trends such as standardization of composite robots,integration of‘5G+cloud computing+AI',and fusion of intelligent sensors are proposed.
