In 2007,the U.S.Geological Survey,the Geological Survey of Canada,and the Mexican Geological Survey initiated a low-density(1 site per 1600 km2,13323 sites) geochemical and mineralogical survey of North American soils...In 2007,the U.S.Geological Survey,the Geological Survey of Canada,and the Mexican Geological Survey initiated a low-density(1 site per 1600 km2,13323 sites) geochemical and mineralogical survey of North American soils(North American Soil Geochemical Landscapes Project).Sampling and analytical protocols were developed at a series of workshops in 2003-2004 and pilot studies were conducted from 2004-2007.The ideal sampling protocol at each site includes a sample from 0-5 cm depth,a composite of the soil A horizon,and a sample from the soil C horizon.The <2-mm fraction of each sample is analyzed for Al,Ca,Fe,K,Mg,Na,S,Ti,Ag,Ba,Be,Bi,Cd,Ce,Co,Cr,Cs,Cu,Ga,In,La,Li,Mn,Mo,Nb,Ni,P,Pb,Rb,Sb,Sc,Sn,Sr,Te,Th,Tl,U,V,W,Y,and Zn by inductively coupled plasma-mass spectrometry and inductively coupled plasma-atomic emission spectrometry following a near-total digestion in a mixture of HCl,HNO3,HClO4,and HF.Separate methods are used for As,Hg,Se,and total C on this same size fraction.The major mineralogical components are determined by a quantitative X-ray diffraction method.Sampling in the conterminous U.S.was completed in 2010(c.4800 sites) with chemical and mineralogical analysis currently underway.In Mexico,approximately 66% of the sampling(871 sites) had been done by the end of 2010 with completion expected in 2012.After completing sampling in the Maritime provinces and portions of other provinces(472 sites,7.6% of the total),Canada withdrew from the project in 2010.Preliminary results for a swath from the central U.S.to Florida clearly show the effects of soil parent material and climate on the chemical and mineralogical composition of soils.A sample archive will be established and made available for future investigations.展开更多
This thesis reviews the motorization of America in 20th century and studies the public governance dealing with negative impacts of motorization. The study respectively examines auto air pollution and the Clean Air Act...This thesis reviews the motorization of America in 20th century and studies the public governance dealing with negative impacts of motorization. The study respectively examines auto air pollution and the Clean Air Act in America,energy consumption and CAF regulations,road safety and FMVSS,traffic congestion and the traffic congestion mitigation. The fundamental objective of the thesis is to serve as a wake- up call and policy suggestions for Chinese government to mitigate the negative impacts of motorization.展开更多
2020年9月16日,美国智库NEW AMERICA发布报告《The Digital Government Mapping Project》.该报告就数字政府的建设问题进行了分析研究,针对后疫情时代政府数字化转型提出了"数字政府堆栈"的概念框架;同时对数字政府建设的成...2020年9月16日,美国智库NEW AMERICA发布报告《The Digital Government Mapping Project》.该报告就数字政府的建设问题进行了分析研究,针对后疫情时代政府数字化转型提出了"数字政府堆栈"的概念框架;同时对数字政府建设的成功案例进行了整合,并且为政府和相关的利益者就如何加快政府数字化转型提出了建议.着力报告解析,为中国数字政府的建设工作提供有益的参考和借鉴.展开更多
This article starts with concept and description of image,and then analyzes imagism in poetry of China and America based on presentation methods and subjective expression.
The Market Revolution took place in America during the first half of the 19th century,and the new trend of development promoted the transition from a traditional rural society to a market society.The influences brough...The Market Revolution took place in America during the first half of the 19th century,and the new trend of development promoted the transition from a traditional rural society to a market society.The influences brought by the Market Revolution are as follows:the status of the rural women has been improved;the ideas of market and the sense of competition have been strengthened;American economy developed rapidly,and both the domestic and international markets have been broadened.The experiences of the transition from rural society to market society include:government supported the development of commercial agriculture;all sectors of society paid attention to agriculture;the quality of agriculture products was guaranteed;however,the development of agriculture damaged the environment.展开更多
This essay deals with the fast growing Sino-Latin American relations,touching upon the issues of the importance of Latin America to China;pros and cons of the bilateral relations;the U.S.factor;the opportunities that ...This essay deals with the fast growing Sino-Latin American relations,touching upon the issues of the importance of Latin America to China;pros and cons of the bilateral relations;the U.S.factor;the opportunities that might be emerged from the financial crisis for the bilateral relations;China's first policy paper towards the region;the overseas Chinese contribution to the bilateral relations;Taiwan problem;the so-called neo-colonialism and the role of Europe.展开更多
Nowadays,multilateral consultative mechanism is gradually becoming a mainstream approach in the contemporary international system.As one of the most important international collective player,the European Union(EU) has...Nowadays,multilateral consultative mechanism is gradually becoming a mainstream approach in the contemporary international system.As one of the most important international collective player,the European Union(EU) has been engaging in multilateral cooperation and consultation since its inception.It has also been promoting a plural world through advocacy and action.The EU and the Latin America/Caribbean(LAC) Countries summits are considered a stability mechanism for promoting bi-regional dialogues.Nevertheless,after 10 years of bi-regional strategic partnership construction,the EU and LAC relations are currently experiencing a difficult phase,suggesting it is time to reform.The purpose of this paper is to analyze the advantages as well as the challenges to EU-LAC relations from the perspective of bi-regional summits,and to assess the short-term trend of their relations in the near展开更多
文摘In 2007,the U.S.Geological Survey,the Geological Survey of Canada,and the Mexican Geological Survey initiated a low-density(1 site per 1600 km2,13323 sites) geochemical and mineralogical survey of North American soils(North American Soil Geochemical Landscapes Project).Sampling and analytical protocols were developed at a series of workshops in 2003-2004 and pilot studies were conducted from 2004-2007.The ideal sampling protocol at each site includes a sample from 0-5 cm depth,a composite of the soil A horizon,and a sample from the soil C horizon.The <2-mm fraction of each sample is analyzed for Al,Ca,Fe,K,Mg,Na,S,Ti,Ag,Ba,Be,Bi,Cd,Ce,Co,Cr,Cs,Cu,Ga,In,La,Li,Mn,Mo,Nb,Ni,P,Pb,Rb,Sb,Sc,Sn,Sr,Te,Th,Tl,U,V,W,Y,and Zn by inductively coupled plasma-mass spectrometry and inductively coupled plasma-atomic emission spectrometry following a near-total digestion in a mixture of HCl,HNO3,HClO4,and HF.Separate methods are used for As,Hg,Se,and total C on this same size fraction.The major mineralogical components are determined by a quantitative X-ray diffraction method.Sampling in the conterminous U.S.was completed in 2010(c.4800 sites) with chemical and mineralogical analysis currently underway.In Mexico,approximately 66% of the sampling(871 sites) had been done by the end of 2010 with completion expected in 2012.After completing sampling in the Maritime provinces and portions of other provinces(472 sites,7.6% of the total),Canada withdrew from the project in 2010.Preliminary results for a swath from the central U.S.to Florida clearly show the effects of soil parent material and climate on the chemical and mineralogical composition of soils.A sample archive will be established and made available for future investigations.
基金the staged achievements of Guangzhou humanities and social science research base “Guangzhou National Central City Research Base” research project
文摘This thesis reviews the motorization of America in 20th century and studies the public governance dealing with negative impacts of motorization. The study respectively examines auto air pollution and the Clean Air Act in America,energy consumption and CAF regulations,road safety and FMVSS,traffic congestion and the traffic congestion mitigation. The fundamental objective of the thesis is to serve as a wake- up call and policy suggestions for Chinese government to mitigate the negative impacts of motorization.
文摘2020年9月16日,美国智库NEW AMERICA发布报告《The Digital Government Mapping Project》.该报告就数字政府的建设问题进行了分析研究,针对后疫情时代政府数字化转型提出了"数字政府堆栈"的概念框架;同时对数字政府建设的成功案例进行了整合,并且为政府和相关的利益者就如何加快政府数字化转型提出了建议.着力报告解析,为中国数字政府的建设工作提供有益的参考和借鉴.
文摘This article starts with concept and description of image,and then analyzes imagism in poetry of China and America based on presentation methods and subjective expression.
基金This paper is a phase achievement of the PhD startup scientific research project of Guizhou Normal University
文摘The Market Revolution took place in America during the first half of the 19th century,and the new trend of development promoted the transition from a traditional rural society to a market society.The influences brought by the Market Revolution are as follows:the status of the rural women has been improved;the ideas of market and the sense of competition have been strengthened;American economy developed rapidly,and both the domestic and international markets have been broadened.The experiences of the transition from rural society to market society include:government supported the development of commercial agriculture;all sectors of society paid attention to agriculture;the quality of agriculture products was guaranteed;however,the development of agriculture damaged the environment.
文摘This essay deals with the fast growing Sino-Latin American relations,touching upon the issues of the importance of Latin America to China;pros and cons of the bilateral relations;the U.S.factor;the opportunities that might be emerged from the financial crisis for the bilateral relations;China's first policy paper towards the region;the overseas Chinese contribution to the bilateral relations;Taiwan problem;the so-called neo-colonialism and the role of Europe.
文摘Nowadays,multilateral consultative mechanism is gradually becoming a mainstream approach in the contemporary international system.As one of the most important international collective player,the European Union(EU) has been engaging in multilateral cooperation and consultation since its inception.It has also been promoting a plural world through advocacy and action.The EU and the Latin America/Caribbean(LAC) Countries summits are considered a stability mechanism for promoting bi-regional dialogues.Nevertheless,after 10 years of bi-regional strategic partnership construction,the EU and LAC relations are currently experiencing a difficult phase,suggesting it is time to reform.The purpose of this paper is to analyze the advantages as well as the challenges to EU-LAC relations from the perspective of bi-regional summits,and to assess the short-term trend of their relations in the near
