Extraction equilibrium features of succinic acid, malic acid,maleic acid and fumaric acid were investi- gated systematically withtrioctylamine (TOA) in chloroform, 4-methyl-2-pentanone (MIBK) and1-octanol. Fourier tra...Extraction equilibrium features of succinic acid, malic acid,maleic acid and fumaric acid were investi- gated systematically withtrioctylamine (TOA) in chloroform, 4-methyl-2-pentanone (MIBK) and1-octanol. Fourier transform-infrared (FTIR) spectroscopic analysisof organic samples loaded with the acid shows that amine forms 1:1complex of ion-pair association with succinic acid, malic acid andmaleic acid, and 1:1, 2:1 complex of ion-pair association withfumaric acid. It is proposed that the complex forms depend on thesecond dissociation constant of the dibasic acid, pK_a2.展开更多
Primitive accumulation refers to during industrialization. This article argues that the early phase of development this Marxist concept implicates a deeper notion of injustice, which contains logic of linearity that c...Primitive accumulation refers to during industrialization. This article argues that the early phase of development this Marxist concept implicates a deeper notion of injustice, which contains logic of linearity that can be further dissected into a trichotomous part worthy of our discussion, namely, temporal ordering, harsh treatment, and inhumane consequences. This ＂linearity＂ as assumed in this concept, nevertheless, was not unchallenged in history. As a matter of fact, in Mao＇s era, China deliberately sought an alternative path to the capitalist mode by attending to social welfare, physical well-being and rights protection for workers. This part of history is well worth re-investigation and re-interpretation.展开更多
基金Supported by the National Natural Science Foundation of China (No. 29836130).
文摘Extraction equilibrium features of succinic acid, malic acid,maleic acid and fumaric acid were investi- gated systematically withtrioctylamine (TOA) in chloroform, 4-methyl-2-pentanone (MIBK) and1-octanol. Fourier transform-infrared (FTIR) spectroscopic analysisof organic samples loaded with the acid shows that amine forms 1:1complex of ion-pair association with succinic acid, malic acid andmaleic acid, and 1:1, 2:1 complex of ion-pair association withfumaric acid. It is proposed that the complex forms depend on thesecond dissociation constant of the dibasic acid, pK_a2.
文摘Primitive accumulation refers to during industrialization. This article argues that the early phase of development this Marxist concept implicates a deeper notion of injustice, which contains logic of linearity that can be further dissected into a trichotomous part worthy of our discussion, namely, temporal ordering, harsh treatment, and inhumane consequences. This ＂linearity＂ as assumed in this concept, nevertheless, was not unchallenged in history. As a matter of fact, in Mao＇s era, China deliberately sought an alternative path to the capitalist mode by attending to social welfare, physical well-being and rights protection for workers. This part of history is well worth re-investigation and re-interpretation.
