Since environmental pollution caused by chemical and energy industries has increased for several decades, there is a social expectation that scientists and engineers try to design sustainable chemical processes, to ge...Since environmental pollution caused by chemical and energy industries has increased for several decades, there is a social expectation that scientists and engineers try to design sustainable chemical processes, to generate less hazardous materials and more environmentally friendly sources of energy production. In this review the roles of Ionic Liquids (ILs) and IL based solvent systems as proposed alternative for conventional organic solvents are described. Since there are already many reviews on benefits of ILs, after a very brief review of ILs we focus mostly on aspects that are not covered in other reviews, in particular the known limits of these solvents. In addition, different methods to measure the physicochemical properties relevant to their use in energy storage applications such as fuel cells and batteries are introduced. The physicochemical properties that are reviewed are thermal properties, conductivity and chemical reactivity. The focus of the review is on the literature after 2008, with the exception of some important historic articles on ILs.展开更多
Diversity of practices and methods in all fields is the basis of emerging standards in different areas. World Wide Web Consortium (W3C) has standardized eXtensible Markup Language (XML) as a very convenient tool to st...Diversity of practices and methods in all fields is the basis of emerging standards in different areas. World Wide Web Consortium (W3C) has standardized eXtensible Markup Language (XML) as a very convenient tool to structure data for numerous purposes. OGC standardized Geography Markup Language (GML), which is an XML-based language, to store and transport geospatial data. Despite the fact that it is a medium to separate georeferenced data from presentation, GML by itself is not intended to visualize geo-referenced data. One of the solutions to visualize GML is to use eXtensible Style sheet Language Transformation (XSLT) as transformer to a visualization language such as Scalable Vector Graphic (SVG). Unlike the usual procedure, the major advantage of the proposed approach is that the transformation process is shifted to the client-side. XSLT as a median language is a general-purpose transformation tool. As it is not specialized for map cartography, map making process is very complicated using this primitive language. To facilitate transformation process, in this research, XSLT is extended to meet cartography requirements. Furthermore, a graphical user interface (XCartoT) is designed to set all the map properties interactively. XCartoT provides a user-friendly interface for cartographers to automatically generate necessary XSL files for their intended maps. The goal of this research is to develop a major step towards the geospatial Web.展开更多
This paper investigates the effects of the renminbi(RMB)exchange rate on trade prices and volumes in selected Belt and Road Initiative(BRI)countries in comparison with the effects of the US dollar.The stylized facts s...This paper investigates the effects of the renminbi(RMB)exchange rate on trade prices and volumes in selected Belt and Road Initiative(BRI)countries in comparison with the effects of the US dollar.The stylized facts show that the RMB is underused in bilateral trade with selected BRI countries where intermediate goods dominate.By estimating the level of exchange rate pass-through and trade volume elasticity,we find that the RMB is significantly correlated with the volume of imports in the sample countries,predicted by the producer currency pricing(PCP)paradigm.We also regroup intermediate and final goods between China and the BRI countries.The evidence shows that dollar fluctuation affects export volumes,reflecting the role of the US as a final goods destination,whereas the RMB exerts a significant impact on the volume of intermediate goods imported from China to the sample countries due to China s important position in global value chains.展开更多
文摘Since environmental pollution caused by chemical and energy industries has increased for several decades, there is a social expectation that scientists and engineers try to design sustainable chemical processes, to generate less hazardous materials and more environmentally friendly sources of energy production. In this review the roles of Ionic Liquids (ILs) and IL based solvent systems as proposed alternative for conventional organic solvents are described. Since there are already many reviews on benefits of ILs, after a very brief review of ILs we focus mostly on aspects that are not covered in other reviews, in particular the known limits of these solvents. In addition, different methods to measure the physicochemical properties relevant to their use in energy storage applications such as fuel cells and batteries are introduced. The physicochemical properties that are reviewed are thermal properties, conductivity and chemical reactivity. The focus of the review is on the literature after 2008, with the exception of some important historic articles on ILs.
文摘Diversity of practices and methods in all fields is the basis of emerging standards in different areas. World Wide Web Consortium (W3C) has standardized eXtensible Markup Language (XML) as a very convenient tool to structure data for numerous purposes. OGC standardized Geography Markup Language (GML), which is an XML-based language, to store and transport geospatial data. Despite the fact that it is a medium to separate georeferenced data from presentation, GML by itself is not intended to visualize geo-referenced data. One of the solutions to visualize GML is to use eXtensible Style sheet Language Transformation (XSLT) as transformer to a visualization language such as Scalable Vector Graphic (SVG). Unlike the usual procedure, the major advantage of the proposed approach is that the transformation process is shifted to the client-side. XSLT as a median language is a general-purpose transformation tool. As it is not specialized for map cartography, map making process is very complicated using this primitive language. To facilitate transformation process, in this research, XSLT is extended to meet cartography requirements. Furthermore, a graphical user interface (XCartoT) is designed to set all the map properties interactively. XCartoT provides a user-friendly interface for cartographers to automatically generate necessary XSL files for their intended maps. The goal of this research is to develop a major step towards the geospatial Web.
文摘This paper investigates the effects of the renminbi(RMB)exchange rate on trade prices and volumes in selected Belt and Road Initiative(BRI)countries in comparison with the effects of the US dollar.The stylized facts show that the RMB is underused in bilateral trade with selected BRI countries where intermediate goods dominate.By estimating the level of exchange rate pass-through and trade volume elasticity,we find that the RMB is significantly correlated with the volume of imports in the sample countries,predicted by the producer currency pricing(PCP)paradigm.We also regroup intermediate and final goods between China and the BRI countries.The evidence shows that dollar fluctuation affects export volumes,reflecting the role of the US as a final goods destination,whereas the RMB exerts a significant impact on the volume of intermediate goods imported from China to the sample countries due to China s important position in global value chains.
