Simulation of the temperature field of copier paper in copier fusing is very important for improving the fusing property of reprography. The temperature field of copier paper varies with a high gradient when the copie...Simulation of the temperature field of copier paper in copier fusing is very important for improving the fusing property of reprography. The temperature field of copier paper varies with a high gradient when the copier paper is moving through the fusing rollers. By means of conventional shaft elements, the high gradient temperature variety causes the oscillation of the numerical solution. Based on the Daubechies scaling functions, a kind of wavelet based element is constructed for the above problem. The temperature field of the copier paper moving through the fusing rollers is simulated using the two methods. Comparison of the results shows the advantages of the wavelet finite element method, which provides a new method for improving the copier properties.展开更多
Objective:To determine the efficacy of WHO impregnated paper and CDC coated bottle based on number of storage days and number of limes of consecutive use,in the assessment of insecticide vector susceptibility tests in...Objective:To determine the efficacy of WHO impregnated paper and CDC coated bottle based on number of storage days and number of limes of consecutive use,in the assessment of insecticide vector susceptibility tests in laboratory and field conditions.Methods:Larvae and pupae of Anopheles gambiae s.l.mosquitoes were collected from the breeding sites in Seme-Kpodji and Cotonou districts in Southern Benin in April 2013 during the first rainy season.Anopheles gambiae s.l.mosquitoes were also collected from the breeding sites in Parakou district in Northern Benin in May 2013 at the beginning of the rainy season.Susceptibility tests were done using impregnated paper with bendiocarb(0.1%)following WHO protocol and stock solutions of permethrin(21.5 ug per bottle)and deltamethrin(12.5 ug per bottle)following CDC protocol on unfed female mosquitoes aged 2-5 days old.These bioassays were repeated a certain number of times.The temperature and relative humidity were monitored and recorded during the susceptibility tests.Results:This study showed that a WHO impregnated paper with bendiocarb could be used four times during four consecutive days in field conditions.Regarding a Wheaton coated bottle with permethrin or deltamethrin,they could be used at least three limes during four consecutive days in laboratory conditions.Conclusions:The day storage and the number of times that a WHO impregnated paper and a CDC coated bottle maintained their efficacy are useful in the assessment of insecticide vectors susceptibility tests.展开更多
为探讨安全与应急领域高质量论文研究主题、研究热点和研究趋势等,基于Web of Science、Socpus和CNKI数据库,采用CiteSpace对《中国安全生产科学技术》、《Safety Science》、《Journal of Safety Research》等7本期刊在2013年1月1日—2...为探讨安全与应急领域高质量论文研究主题、研究热点和研究趋势等,基于Web of Science、Socpus和CNKI数据库,采用CiteSpace对《中国安全生产科学技术》、《Safety Science》、《Journal of Safety Research》等7本期刊在2013年1月1日—2023年6月30日已发表文献进行科学计量可视化分析。研究结果表明:安全与应急领域发文量趋于稳定,安全与应急领域整体保持平稳发展。风险分析和数值模拟、矿山安全、应急管理及公共安全是中文期刊研究中重要的3个主题,《Safety Science》主要关注韧性城市、风险感知与安全氛围的研究;应急疏散是近年的研究热点,安全与应急领域的研究呈现多视角多学科联合的特征。研究结果可为安全与应急领域科研工作者及该领域相关期刊提供参考与借鉴。展开更多
This review hopes to clearly explain the following viewpoints： （1） Neuronal synchronization underlies brain functioning, and it seems possible that blocking excessive synchronization in an epileptic neural network ...This review hopes to clearly explain the following viewpoints： （1） Neuronal synchronization underlies brain functioning, and it seems possible that blocking excessive synchronization in an epileptic neural network could reduce or even control seizures. （2） Local field potential coupling is a very common phenomenon during synchronization in networks. Removal of neurons or neuronal networks that are coupled can significantly alter the extracellular field potential. Interventions of coupling mediated by local field potentials could result in desynchronization of epileptic seizures. （3） The synchronized electrical activity generated by neurons is sensitive to changes in the size of the extracellular space, which affects the efficiency of field potential transmission and the threshold of cell excitability. （4） Manipulations of the field potential fluctuations could help block synchronization at seizure onset.展开更多
[目的/意义]科学知识图谱以可视化的方式呈现出学科知识的发展进程与结构关系,揭示学科知识及其活动规律。[方法/过程]基于ESI学科结合Web of Science分类之间相对应的引用关系,构建ESI学科覆盖图,并以中国高被引论文为分析对象,分别从...[目的/意义]科学知识图谱以可视化的方式呈现出学科知识的发展进程与结构关系,揭示学科知识及其活动规律。[方法/过程]基于ESI学科结合Web of Science分类之间相对应的引用关系,构建ESI学科覆盖图,并以中国高被引论文为分析对象,分别从国家层面和机构层面对高被引论文进行可视化的呈现与分析。[结果/结论]研究表明:中国学者独立撰写的高被引论文与中国高被引论文的ESI学科领域分布较为相似,主要集中在化学、材料科学、物理学和工程科学等学科,分布较不均衡;国际合作推动了中国相关学科和领域的发展,在空间科学学科上尤为明显;C9联盟和E9联盟等国内一流大学联盟的学科领域分布与中国高被引论文学科总体分布基本相似,联盟内部合作比例很低,高水平论文合作撰写亟待加强。展开更多
文摘Simulation of the temperature field of copier paper in copier fusing is very important for improving the fusing property of reprography. The temperature field of copier paper varies with a high gradient when the copier paper is moving through the fusing rollers. By means of conventional shaft elements, the high gradient temperature variety causes the oscillation of the numerical solution. Based on the Daubechies scaling functions, a kind of wavelet based element is constructed for the above problem. The temperature field of the copier paper moving through the fusing rollers is simulated using the two methods. Comparison of the results shows the advantages of the wavelet finite element method, which provides a new method for improving the copier properties.
基金Funded by the Ministere de I'Enseignement Superieur et de la Recherche Scientifique(MESRS),Benin and the President's Malaria Initiative of the U.S. Government through USAID
文摘Objective:To determine the efficacy of WHO impregnated paper and CDC coated bottle based on number of storage days and number of limes of consecutive use,in the assessment of insecticide vector susceptibility tests in laboratory and field conditions.Methods:Larvae and pupae of Anopheles gambiae s.l.mosquitoes were collected from the breeding sites in Seme-Kpodji and Cotonou districts in Southern Benin in April 2013 during the first rainy season.Anopheles gambiae s.l.mosquitoes were also collected from the breeding sites in Parakou district in Northern Benin in May 2013 at the beginning of the rainy season.Susceptibility tests were done using impregnated paper with bendiocarb(0.1%)following WHO protocol and stock solutions of permethrin(21.5 ug per bottle)and deltamethrin(12.5 ug per bottle)following CDC protocol on unfed female mosquitoes aged 2-5 days old.These bioassays were repeated a certain number of times.The temperature and relative humidity were monitored and recorded during the susceptibility tests.Results:This study showed that a WHO impregnated paper with bendiocarb could be used four times during four consecutive days in field conditions.Regarding a Wheaton coated bottle with permethrin or deltamethrin,they could be used at least three limes during four consecutive days in laboratory conditions.Conclusions:The day storage and the number of times that a WHO impregnated paper and a CDC coated bottle maintained their efficacy are useful in the assessment of insecticide vectors susceptibility tests.
文摘为探讨安全与应急领域高质量论文研究主题、研究热点和研究趋势等,基于Web of Science、Socpus和CNKI数据库,采用CiteSpace对《中国安全生产科学技术》、《Safety Science》、《Journal of Safety Research》等7本期刊在2013年1月1日—2023年6月30日已发表文献进行科学计量可视化分析。研究结果表明:安全与应急领域发文量趋于稳定,安全与应急领域整体保持平稳发展。风险分析和数值模拟、矿山安全、应急管理及公共安全是中文期刊研究中重要的3个主题,《Safety Science》主要关注韧性城市、风险感知与安全氛围的研究;应急疏散是近年的研究热点,安全与应急领域的研究呈现多视角多学科联合的特征。研究结果可为安全与应急领域科研工作者及该领域相关期刊提供参考与借鉴。
基金supported by grants from the National Natural Science Foundation of China,No. 30971534125 Project of the Third Xiangya Hospital of Central South University,China
文摘This review hopes to clearly explain the following viewpoints： （1） Neuronal synchronization underlies brain functioning, and it seems possible that blocking excessive synchronization in an epileptic neural network could reduce or even control seizures. （2） Local field potential coupling is a very common phenomenon during synchronization in networks. Removal of neurons or neuronal networks that are coupled can significantly alter the extracellular field potential. Interventions of coupling mediated by local field potentials could result in desynchronization of epileptic seizures. （3） The synchronized electrical activity generated by neurons is sensitive to changes in the size of the extracellular space, which affects the efficiency of field potential transmission and the threshold of cell excitability. （4） Manipulations of the field potential fluctuations could help block synchronization at seizure onset.
文摘[目的/意义]科学知识图谱以可视化的方式呈现出学科知识的发展进程与结构关系,揭示学科知识及其活动规律。[方法/过程]基于ESI学科结合Web of Science分类之间相对应的引用关系,构建ESI学科覆盖图,并以中国高被引论文为分析对象,分别从国家层面和机构层面对高被引论文进行可视化的呈现与分析。[结果/结论]研究表明:中国学者独立撰写的高被引论文与中国高被引论文的ESI学科领域分布较为相似,主要集中在化学、材料科学、物理学和工程科学等学科,分布较不均衡;国际合作推动了中国相关学科和领域的发展,在空间科学学科上尤为明显;C9联盟和E9联盟等国内一流大学联盟的学科领域分布与中国高被引论文学科总体分布基本相似,联盟内部合作比例很低,高水平论文合作撰写亟待加强。
