为了保证管理变革过程中信息系统平滑、持续的演进,江苏省电力公司以SG186信息化工程为基础,通过TOGAF(The Open Group Architecture Framework)元模型方法,构建了比较完善的公司级企业架构,涵盖业务架构、数据架构、应用架构和技术架构...为了保证管理变革过程中信息系统平滑、持续的演进,江苏省电力公司以SG186信息化工程为基础,通过TOGAF(The Open Group Architecture Framework)元模型方法,构建了比较完善的公司级企业架构,涵盖业务架构、数据架构、应用架构和技术架构,并在SG-ERP项目中通过模板和架构管控,以企业架构设计引领ERP实施,完成了SAP与原有信息化资产的整合,实现企业级集成服务设计。通过实践论证了基于企业架构开展信息化建设的必要性和先进性。展开更多
We report the investigation on the low-temperature oxidation of cyclohexane in a jet-stirred reactor over 500-742 K. Synchrotron vacuum ultraviolet photoionization mass spectrometry （SVUV-PIMS） was used for identify...We report the investigation on the low-temperature oxidation of cyclohexane in a jet-stirred reactor over 500-742 K. Synchrotron vacuum ultraviolet photoionization mass spectrometry （SVUV-PIMS） was used for identifying and quantifying the oxidation species. Major products, cyclic olefins, and oxygenated products including reactive hydroperoxides and high oxygen compounds were detected. Compared with n-alkanes, a narrow low-temperature window （-80 K） was observed in the low-temperature oxidation of cyclohexane. Besides, a kinetic model for cyclohexane oxidation was developed based on the CNRS model [Combust. Flame 160, 2319 （2013）], which can better capture the experimental results than previous models. Based on the modeling analysis, the 1,5-H shift dominates the crucial isomerization steps of the first and second O2 addition products in the low-temperature chain branching process of cyclohexane. The negative temperature coefficient behavior of cyclohexane oxidation results from the reduced chain branching due to the competition from chain inhibition and propagation reactions, i.e. the reaction between cyclohexyl radical and O2 and the de- composition of cyclohexylperoxy radical, both producing cyclohexene and HO2 radical, as well as the decomposition of cyclohexylhydroperoxy radical producing hex-5-en-l-al and OH radical.展开更多
文摘为了保证管理变革过程中信息系统平滑、持续的演进,江苏省电力公司以SG186信息化工程为基础,通过TOGAF(The Open Group Architecture Framework)元模型方法,构建了比较完善的公司级企业架构,涵盖业务架构、数据架构、应用架构和技术架构,并在SG-ERP项目中通过模板和架构管控,以企业架构设计引领ERP实施,完成了SAP与原有信息化资产的整合,实现企业级集成服务设计。通过实践论证了基于企业架构开展信息化建设的必要性和先进性。
基金supported by the National Natural Science Foundation of China(No.91641205,No.51622605,No.91541201)the Shanghai Science and Technology Committee(No.17XD1402000)
文摘We report the investigation on the low-temperature oxidation of cyclohexane in a jet-stirred reactor over 500-742 K. Synchrotron vacuum ultraviolet photoionization mass spectrometry （SVUV-PIMS） was used for identifying and quantifying the oxidation species. Major products, cyclic olefins, and oxygenated products including reactive hydroperoxides and high oxygen compounds were detected. Compared with n-alkanes, a narrow low-temperature window （-80 K） was observed in the low-temperature oxidation of cyclohexane. Besides, a kinetic model for cyclohexane oxidation was developed based on the CNRS model [Combust. Flame 160, 2319 （2013）], which can better capture the experimental results than previous models. Based on the modeling analysis, the 1,5-H shift dominates the crucial isomerization steps of the first and second O2 addition products in the low-temperature chain branching process of cyclohexane. The negative temperature coefficient behavior of cyclohexane oxidation results from the reduced chain branching due to the competition from chain inhibition and propagation reactions, i.e. the reaction between cyclohexyl radical and O2 and the de- composition of cyclohexylperoxy radical, both producing cyclohexene and HO2 radical, as well as the decomposition of cyclohexylhydroperoxy radical producing hex-5-en-l-al and OH radical.
