A series of hydrogen storage Co-free AB3-type alloys were directly synthesized with vacuum mid-frequency melting method,within which Ni of La0.7Mg0.3Ni3 alloy was substituted by Fe,B and(FeB) alloy,respectively.Alloys...A series of hydrogen storage Co-free AB3-type alloys were directly synthesized with vacuum mid-frequency melting method,within which Ni of La0.7Mg0.3Ni3 alloy was substituted by Fe,B and(FeB) alloy,respectively.Alloys were characterized by XRD,EDS and SEM to investigate the effects of B and Fe substitution for Ni on material structure.The content of LaMg2Ni9 phase within La0.7Mg0.3Ni3 alloy reaches 37.9% and that of La0.7Mg0.3Ni2.9(FeB)0.1 alloys reduces to 23.58%.Among all samples,ground particles with different shapes correspond to different phases.The major substitution occurs in LaMg2Ni9 phase.Electrochemical tests indicate that substituted alloys have different electrochemical performance,which is affected by phase structures of alloy.The discharge capacity of La0.7Mg0.3Ni3 alloy reaches 337.3 mA·h/g,but La0.7Mg0.3Ni2.9(FeB)0.1 alloy gets better high rate discharge(HRD) performance at the discharge rate of 500 mA/g with a high HRD value of 73.19%.展开更多
This paper aims to investigate the effects of labor allocation distortions and various levels of distortion-free labor allocation on social output in China's primary,secondary and tertiary industries.Theoretical m...This paper aims to investigate the effects of labor allocation distortions and various levels of distortion-free labor allocation on social output in China's primary,secondary and tertiary industries.Theoretical model creation and empirical study have led us to the following findings:the quantity of workforce in China's primary industry exceeds the quantity of workforce under the scenario of distortion-free labor allocation and the same is generally true for China's tertiary industry.However,the quantity of labor allocation in secondary industry is significantly below the level of distortion-free allocation but the share of allocation distortion overall tends to decline.Labor allocation distortions for various sectors are mainly caused by intra-sectoral allocation distortions and sectoral wage differences,of which the effect of internal distortion factor is the most obvious.In terms of total output,the eliminations of total distortion,wage difference distortion and internal allocation distortion will all cause total social output to exceed original output,and labor reallocation accompanying capital change will not only bring about a further increase of output but may offset the defects of limited potentials of labor resources reallocation.Growth rates with the eliminations of wage difference distortion,internal allocation distortion and superimposed factor can basically explain for the growth rates with the elimination of all distortions.Given this background,it is necessary to take effective measures at an early date to reduce China s labor allocation distortions and improve overall economic efficiency.展开更多
基金Project(2007AA11A104) supported by the High-tech Research and Development Program of ChinaProject(2009CB220100) supported by the National Basic Research Program of China
文摘A series of hydrogen storage Co-free AB3-type alloys were directly synthesized with vacuum mid-frequency melting method,within which Ni of La0.7Mg0.3Ni3 alloy was substituted by Fe,B and(FeB) alloy,respectively.Alloys were characterized by XRD,EDS and SEM to investigate the effects of B and Fe substitution for Ni on material structure.The content of LaMg2Ni9 phase within La0.7Mg0.3Ni3 alloy reaches 37.9% and that of La0.7Mg0.3Ni2.9(FeB)0.1 alloys reduces to 23.58%.Among all samples,ground particles with different shapes correspond to different phases.The major substitution occurs in LaMg2Ni9 phase.Electrochemical tests indicate that substituted alloys have different electrochemical performance,which is affected by phase structures of alloy.The discharge capacity of La0.7Mg0.3Ni3 alloy reaches 337.3 mA·h/g,but La0.7Mg0.3Ni2.9(FeB)0.1 alloy gets better high rate discharge(HRD) performance at the discharge rate of 500 mA/g with a high HRD value of 73.19%.
基金funded by National Social Sciences Foundation Program:Empirical Analysis and Countermeasures of Income Distribution Imbalances for Corporate Average Employees Based on Quality and Efficiency(Approval No.13BJY037)
文摘This paper aims to investigate the effects of labor allocation distortions and various levels of distortion-free labor allocation on social output in China's primary,secondary and tertiary industries.Theoretical model creation and empirical study have led us to the following findings:the quantity of workforce in China's primary industry exceeds the quantity of workforce under the scenario of distortion-free labor allocation and the same is generally true for China's tertiary industry.However,the quantity of labor allocation in secondary industry is significantly below the level of distortion-free allocation but the share of allocation distortion overall tends to decline.Labor allocation distortions for various sectors are mainly caused by intra-sectoral allocation distortions and sectoral wage differences,of which the effect of internal distortion factor is the most obvious.In terms of total output,the eliminations of total distortion,wage difference distortion and internal allocation distortion will all cause total social output to exceed original output,and labor reallocation accompanying capital change will not only bring about a further increase of output but may offset the defects of limited potentials of labor resources reallocation.Growth rates with the eliminations of wage difference distortion,internal allocation distortion and superimposed factor can basically explain for the growth rates with the elimination of all distortions.Given this background,it is necessary to take effective measures at an early date to reduce China s labor allocation distortions and improve overall economic efficiency.
