逆P-集合是把动态特性引入到有限普通集合X内(Cantor set X),改进有限普通集合X被提出的。逆P-集合是由内逆P-集合X珔F与外逆P-集合X珔F珔构成的集合对;或者,(X珔F,X珔F珔)是逆P-集合。逆P-集合具有动态特性。逆P-推理是逆P-集合生成的...逆P-集合是把动态特性引入到有限普通集合X内(Cantor set X),改进有限普通集合X被提出的。逆P-集合是由内逆P-集合X珔F与外逆P-集合X珔F珔构成的集合对;或者,(X珔F,X珔F珔)是逆P-集合。逆P-集合具有动态特性。逆P-推理是逆P-集合生成的一个动态推理,它是由内逆P-推理与外逆P-推理共同构成的。利用逆P-集合和逆P-推理,给出逆P-等价类、内逆P-等价类和外逆P-等价类概念,逆P-等价类与普通等价类的关系,逆P-等价类的逆P-推理分离-还原与分离-还原定理。在静态-动态条件下,普通等价类是逆P-等价类的特例,逆P-等价类是普通等价类的一般形式。展开更多
The present work establishes a systematic approach based on the application of in-situ Fourier transform infrared spectroscopy （FTIR） for the investigation of the crystal structure, thermal stability, redox behavior...The present work establishes a systematic approach based on the application of in-situ Fourier transform infrared spectroscopy （FTIR） for the investigation of the crystal structure, thermal stability, redox behavior （temperature-programmed reduction/temperatureprogrammed re-oxidation） as well as the catalytic properties of Co3O4 thin films. The syntheses of Co3O4 were achieved by chemical vapor deposition in the temperature range of 400-500℃. The structure analysis of the as-prepared material revealed the presence of two prominent IR bands peaking at 544 cm-1 （υ1） and 650 cm-1 （υ2） respectively, which originate from the stretching vibrations of the Co-O bond, characteristic of the Co3O4 spinel. The lattice stability limit of Co3O4 was estimated to be above 650℃. The redox properties of the spinel structure were determined by integrating the area under the emission bands υ1 and υ2 as a function of the temperature. Moreover, Co3O4 has been successfully tested as a catalyst towards complete oxidation of dimethyl ether below 340 ℃. The exhaust gas analysis during the catalytic process by in situ absorption FTIR revealed that only CO2 and H2O were detected as the final products in the catalytic reaction. The redox behavior suggests that the oxidation of dimethyl ether over Co3O4 follows a Mars-van Krevelen type mechanism. The comprehensive application of in situ FTIR provides a novel diagnostic tool in characterization and performance test of catalysts.展开更多
利用逆P-集合,提出函数逆P-集合。函数逆P-集合是把函数概念引入到逆P-集合内,改进逆P-集合得到的。函数逆P-集合具有动态特征和规律(函数)特征。函数逆P-集合是由函数内逆P-集合S珔F与函数外逆P-集合S珔F珔构成的函数集合对;或者,(S珔F...利用逆P-集合,提出函数逆P-集合。函数逆P-集合是把函数概念引入到逆P-集合内,改进逆P-集合得到的。函数逆P-集合具有动态特征和规律(函数)特征。函数逆P-集合是由函数内逆P-集合S珔F与函数外逆P-集合S珔F珔构成的函数集合对;或者,(S珔F,珔SF珔)是函数逆P-集合。在一定条件下,函数逆P-集合(S珔F,S珔F珔)被还原成有限普通函数集合S。逆P-集合是把动态特征引入到有限普通集合X内(Cantor set X),改进有限普通集合X被提出的。函数逆P-集合具有与函数P-集合相反的动态特征、规律(函数)特征。本文给出函数逆P-集合的结构、还原和它的函数等价类特征。利用数据拆分-合成原理,给出逆P-信息规律融合与它的生成;给出逆P-信息规律融合的属性特征与属性定理。利用这些结果,给出逆P-信息规律融合生成的隐形信息图像与它的应用。函数逆P-集合与函数P-集合是两个独立的、特征不同的新模型。展开更多
文摘逆P-集合是把动态特性引入到有限普通集合X内(Cantor set X),改进有限普通集合X被提出的。逆P-集合是由内逆P-集合X珔F与外逆P-集合X珔F珔构成的集合对;或者,(X珔F,X珔F珔)是逆P-集合。逆P-集合具有动态特性。逆P-推理是逆P-集合生成的一个动态推理,它是由内逆P-推理与外逆P-推理共同构成的。利用逆P-集合和逆P-推理,给出逆P-等价类、内逆P-等价类和外逆P-等价类概念,逆P-等价类与普通等价类的关系,逆P-等价类的逆P-推理分离-还原与分离-还原定理。在静态-动态条件下,普通等价类是逆P-等价类的特例,逆P-等价类是普通等价类的一般形式。
文摘The present work establishes a systematic approach based on the application of in-situ Fourier transform infrared spectroscopy （FTIR） for the investigation of the crystal structure, thermal stability, redox behavior （temperature-programmed reduction/temperatureprogrammed re-oxidation） as well as the catalytic properties of Co3O4 thin films. The syntheses of Co3O4 were achieved by chemical vapor deposition in the temperature range of 400-500℃. The structure analysis of the as-prepared material revealed the presence of two prominent IR bands peaking at 544 cm-1 （υ1） and 650 cm-1 （υ2） respectively, which originate from the stretching vibrations of the Co-O bond, characteristic of the Co3O4 spinel. The lattice stability limit of Co3O4 was estimated to be above 650℃. The redox properties of the spinel structure were determined by integrating the area under the emission bands υ1 and υ2 as a function of the temperature. Moreover, Co3O4 has been successfully tested as a catalyst towards complete oxidation of dimethyl ether below 340 ℃. The exhaust gas analysis during the catalytic process by in situ absorption FTIR revealed that only CO2 and H2O were detected as the final products in the catalytic reaction. The redox behavior suggests that the oxidation of dimethyl ether over Co3O4 follows a Mars-van Krevelen type mechanism. The comprehensive application of in situ FTIR provides a novel diagnostic tool in characterization and performance test of catalysts.
文摘利用逆P-集合,提出函数逆P-集合。函数逆P-集合是把函数概念引入到逆P-集合内,改进逆P-集合得到的。函数逆P-集合具有动态特征和规律(函数)特征。函数逆P-集合是由函数内逆P-集合S珔F与函数外逆P-集合S珔F珔构成的函数集合对;或者,(S珔F,珔SF珔)是函数逆P-集合。在一定条件下,函数逆P-集合(S珔F,S珔F珔)被还原成有限普通函数集合S。逆P-集合是把动态特征引入到有限普通集合X内(Cantor set X),改进有限普通集合X被提出的。函数逆P-集合具有与函数P-集合相反的动态特征、规律(函数)特征。本文给出函数逆P-集合的结构、还原和它的函数等价类特征。利用数据拆分-合成原理,给出逆P-信息规律融合与它的生成;给出逆P-信息规律融合的属性特征与属性定理。利用这些结果,给出逆P-信息规律融合生成的隐形信息图像与它的应用。函数逆P-集合与函数P-集合是两个独立的、特征不同的新模型。
