When designing a solar power plant, it is much more important to avoid the shadow on the PV Panels. As the shadow falls on the PV Panels;it significantly reduces the generation of required power as planned and designe...When designing a solar power plant, it is much more important to avoid the shadow on the PV Panels. As the shadow falls on the PV Panels;it significantly reduces the generation of required power as planned and designed. This research paper and case study will help a lot to avoid shadow, especially when selecting inter-row spacing between the strings of solar power plants.展开更多
目的应用成簇规律间隔短回文重复序列(clustered regularly inter-spaced short palindromic repeats,CRISPR)基因分型方法,对乌兰县分离鼠疫菌株进行CRISPR基因分型分析,以了解该地区鼠疫菌CRISPR类群和基因型。方法复苏培养乌兰县1966...目的应用成簇规律间隔短回文重复序列(clustered regularly inter-spaced short palindromic repeats,CRISPR)基因分型方法,对乌兰县分离鼠疫菌株进行CRISPR基因分型分析,以了解该地区鼠疫菌CRISPR类群和基因型。方法复苏培养乌兰县1966—2010年取自鼠疫患者、媒介昆虫和喜马拉雅旱獭的63株原始鼠疫菌株,提取其DNA,设计CRISPR的YPa、YPb、YPc 3个位点引物,利用PCR技术,对以上位点进行扩增,测定其扩增产物核酸序列并进行综合分析,将测得的CRISPR序列与文献最新报道的CRISPR Dictionary和美国国立生物技术信息中心(National Center for Biotechnology Information,NCBI)数据库进行比对,探索是否存在之前未出现的CRISPR间隔(spacer)类群和基因型别,分析菌株间可能的进化关系,最终确定乌兰县喜马拉雅旱獭鼠疫自然疫源地鼠疫菌菌株的CRISPR基因库。结果63株鼠疫菌在3个CRISPR位点上共有16种spacer,其中YPa位点9种、YPb位点4种、YPc位点3种。63株鼠疫菌可被分为6个基因型,分别为G26-a1′、G26-a1′a4^(-)、G22-a4^(-)、G22、G22-a1′a4^(-)、G7,归为4大CRISPR类群,分别为Ca35′、Ca7、Ca7′、Cb4。Ca35′是该地区主要流行类群;Ca7和Ca7′分布在乌兰县东部的铜普镇和茶卡镇;Cb4仅存在于赛什克地区。结论青海省乌兰县鼠疫菌种群结构相对稳定,以Ca35′为主要种群,G26-a1′型为主要基因型,呈现显著的地区聚集特征,今后可以利用CRISPR基因分型技术加强该地区鼠疫溯源检测和防控工作。展开更多
In this article, we establish some atomic decomposition theorems for martin- gale Hardy-Lorentz spaces. As applications, with the help of weak atomic decompositions, some interpolation theorems for martingale Hardy-Lo...In this article, we establish some atomic decomposition theorems for martin- gale Hardy-Lorentz spaces. As applications, with the help of weak atomic decompositions, some interpolation theorems for martingale Hardy-Lorentz spaces are proved.展开更多
Ongoing research is described that is focused upon modelling the space base information network and simulating its behaviours： simulation of spaced based communications and networking project. Its objective is to dem...Ongoing research is described that is focused upon modelling the space base information network and simulating its behaviours： simulation of spaced based communications and networking project. Its objective is to demonstrate the feasibility of producing a tool that can provide a performance evaluation of various eonstellation access techniques and routing policies. The architecture and design of the simulation system are explored. The algorithm of data routing and instrument scheduling in this project is described. Besides these, the key methodologies of simulating the inter-satellite link features in the data transmissions are also discussed. The performance of both instrument scheduling algorithm and routing schemes is evaluated and analyzed through extensive simulations under a typical scenario.展开更多
Two kinds of space applications of THz band are proposed. A novel method for the THz band signal propagation in the satellite-earth link is studied in order to overcome the huge loss in the atmosphere. The THz signal ...Two kinds of space applications of THz band are proposed. A novel method for the THz band signal propagation in the satellite-earth link is studied in order to overcome the huge loss in the atmosphere. The THz signal should be transformed to Ka band by data processor on satellite, and then be transmitted to the earth station in order to avoid the THz loss in the atmosphere. The design can realize at least 10 Gbps space communication or data relay. Furthermore, three aspects of challenges in THz band are analyzed.展开更多
文摘When designing a solar power plant, it is much more important to avoid the shadow on the PV Panels. As the shadow falls on the PV Panels;it significantly reduces the generation of required power as planned and designed. This research paper and case study will help a lot to avoid shadow, especially when selecting inter-row spacing between the strings of solar power plants.
文摘目的应用成簇规律间隔短回文重复序列(clustered regularly inter-spaced short palindromic repeats,CRISPR)基因分型方法,对乌兰县分离鼠疫菌株进行CRISPR基因分型分析,以了解该地区鼠疫菌CRISPR类群和基因型。方法复苏培养乌兰县1966—2010年取自鼠疫患者、媒介昆虫和喜马拉雅旱獭的63株原始鼠疫菌株,提取其DNA,设计CRISPR的YPa、YPb、YPc 3个位点引物,利用PCR技术,对以上位点进行扩增,测定其扩增产物核酸序列并进行综合分析,将测得的CRISPR序列与文献最新报道的CRISPR Dictionary和美国国立生物技术信息中心(National Center for Biotechnology Information,NCBI)数据库进行比对,探索是否存在之前未出现的CRISPR间隔(spacer)类群和基因型别,分析菌株间可能的进化关系,最终确定乌兰县喜马拉雅旱獭鼠疫自然疫源地鼠疫菌菌株的CRISPR基因库。结果63株鼠疫菌在3个CRISPR位点上共有16种spacer,其中YPa位点9种、YPb位点4种、YPc位点3种。63株鼠疫菌可被分为6个基因型,分别为G26-a1′、G26-a1′a4^(-)、G22-a4^(-)、G22、G22-a1′a4^(-)、G7,归为4大CRISPR类群,分别为Ca35′、Ca7、Ca7′、Cb4。Ca35′是该地区主要流行类群;Ca7和Ca7′分布在乌兰县东部的铜普镇和茶卡镇;Cb4仅存在于赛什克地区。结论青海省乌兰县鼠疫菌种群结构相对稳定,以Ca35′为主要种群,G26-a1′型为主要基因型,呈现显著的地区聚集特征,今后可以利用CRISPR基因分型技术加强该地区鼠疫溯源检测和防控工作。
基金supported by the National Natural Science Foundation of China(10871016)
文摘In this article, we establish some atomic decomposition theorems for martin- gale Hardy-Lorentz spaces. As applications, with the help of weak atomic decompositions, some interpolation theorems for martingale Hardy-Lorentz spaces are proved.
基金This project was supported by the National "863" High-Tech Research and Development Program of China(2002AA7170)
文摘Ongoing research is described that is focused upon modelling the space base information network and simulating its behaviours： simulation of spaced based communications and networking project. Its objective is to demonstrate the feasibility of producing a tool that can provide a performance evaluation of various eonstellation access techniques and routing policies. The architecture and design of the simulation system are explored. The algorithm of data routing and instrument scheduling in this project is described. Besides these, the key methodologies of simulating the inter-satellite link features in the data transmissions are also discussed. The performance of both instrument scheduling algorithm and routing schemes is evaluated and analyzed through extensive simulations under a typical scenario.
文摘Two kinds of space applications of THz band are proposed. A novel method for the THz band signal propagation in the satellite-earth link is studied in order to overcome the huge loss in the atmosphere. The THz signal should be transformed to Ka band by data processor on satellite, and then be transmitted to the earth station in order to avoid the THz loss in the atmosphere. The design can realize at least 10 Gbps space communication or data relay. Furthermore, three aspects of challenges in THz band are analyzed.
