HW-02 is a new organophosphates herbicide which is discovered and developed in China. The kinetics and mechanism of HW-02 photodegradation in the organic solvents were studied at 25°C under the irradiation of ult...HW-02 is a new organophosphates herbicide which is discovered and developed in China. The kinetics and mechanism of HW-02 photodegradation in the organic solvents were studied at 25°C under the irradiation of ultraviolet light. The results showed that photochemical reaction of HW-02 in organic solvents such as n-hexane, methanol, dimethyl benzene and acetone under UV light could be well described by the first kinetic equation, and the photodegradation efficiency decreased with a order of n-hexane methanol xylene acetone. The photodegradation efficiency constant of HW-02 in n-hexane, methanol, xylene and acetone were 4.951 × 10^-2 , 3.253 × 10^-2 , 2.377 × 10^-2 and 1.628 × 10^-2 min 1 , and the corresponding half-lives were 13.99, 21.20, 29.15 and 42.56 min, respectively. By separation and identification of photoproducts using GC-MS, it could be concluded that HW-02 was photolyzed through ester cleavage, photo-dechlorination and photoisomerization of the molecule itself.展开更多
The practice of international human rights has led to the development of the political notion of human rights in contemporary times and triggered the theoretical reflection on"what are human rights"The natur...The practice of international human rights has led to the development of the political notion of human rights in contemporary times and triggered the theoretical reflection on"what are human rights"The natural rights view,which is based on human nature,regards human rights as universal moral rights owned by everyone against all others.holding a different perspective from the natural rights view,Raz,the representative of the political notion of human rights,bases his view on the political function of human rights in restricting national sovereignty in international practice and defines human rights as the legal rights enjoyed by everyone against the country since the end of the World War ii,which should be enforced by fair and reliable international institutions.Unavoidably,Raz’s concept of human rights has been subject to questioning and criticism by natural right theorists.The controversy around Raz’s concept of human rights shows that:on one hand,the Western academic circle has not readied a basic consensus on the understanding of human rights based on international human rights practice;on the other hand,it deeply reveals the theoretical need for the international community to reach a basic consensus on international human rights practice in the historical context of the changing international legal order.展开更多
基金supported by the Pesticide Residue Foundation of Chinese Ministry of Agriculture
文摘HW-02 is a new organophosphates herbicide which is discovered and developed in China. The kinetics and mechanism of HW-02 photodegradation in the organic solvents were studied at 25°C under the irradiation of ultraviolet light. The results showed that photochemical reaction of HW-02 in organic solvents such as n-hexane, methanol, dimethyl benzene and acetone under UV light could be well described by the first kinetic equation, and the photodegradation efficiency decreased with a order of n-hexane methanol xylene acetone. The photodegradation efficiency constant of HW-02 in n-hexane, methanol, xylene and acetone were 4.951 × 10^-2 , 3.253 × 10^-2 , 2.377 × 10^-2 and 1.628 × 10^-2 min 1 , and the corresponding half-lives were 13.99, 21.20, 29.15 and 42.56 min, respectively. By separation and identification of photoproducts using GC-MS, it could be concluded that HW-02 was photolyzed through ester cleavage, photo-dechlorination and photoisomerization of the molecule itself.
基金a phased result project of the China Society for Human Rights Studies(CSHRS)’s Studies on Political Human Rights Theory in the Contemporary West(Project No.CSHRS2020-03ZD)National Social Science Fund of China’s Research on the Judicial Interpretation of Human Rights in Contemporary China(Project No.:16BFX023)
文摘The practice of international human rights has led to the development of the political notion of human rights in contemporary times and triggered the theoretical reflection on"what are human rights"The natural rights view,which is based on human nature,regards human rights as universal moral rights owned by everyone against all others.holding a different perspective from the natural rights view,Raz,the representative of the political notion of human rights,bases his view on the political function of human rights in restricting national sovereignty in international practice and defines human rights as the legal rights enjoyed by everyone against the country since the end of the World War ii,which should be enforced by fair and reliable international institutions.Unavoidably,Raz’s concept of human rights has been subject to questioning and criticism by natural right theorists.The controversy around Raz’s concept of human rights shows that:on one hand,the Western academic circle has not readied a basic consensus on the understanding of human rights based on international human rights practice;on the other hand,it deeply reveals the theoretical need for the international community to reach a basic consensus on international human rights practice in the historical context of the changing international legal order.
