Crystal of rare earth perchlorate complex compound with proline was synthesized. By using TG, DTA and chemical analytic method, and comparing with relative literatures, its structure was characterized as [Gd2(Pro)6(H2...Crystal of rare earth perchlorate complex compound with proline was synthesized. By using TG, DTA and chemical analytic method, and comparing with relative literatures, its structure was characterized as [Gd2(Pro)6(H2O)4](ClO4)6, and it has a purification of 99.0% . A thermochemical cycle was designed at 298.15K, measurements of solution calorimetry of the reactants [2GdCl3· 6H2O+ 6Pro+ 6NaClO4· H2O] and the products {[Gd2(Pro)6(H2O)4](ClO4)6+ 6NaCl} were carried out in an isoperibel reaction calorimeter, respectively. The calorimetric solvent used was 2mol· L- 1 HCl. The chemical reaction and standard enthalpy of formation were calculated as:<IMG SRC="IMAGE/12180047.JPG" HEIGHT=11 WIDTH=24> =- 46.829kJ· mol- 1,<IMG SRC="IMAGE/12180048.JPG" HEIGHT=11 WIDTH=24> ([Gd2(Pro)6(H2O)4](ClO4)6,s,298.15K)=- 6532.745kJ· mol- 1.展开更多
Premiere Pro CS6是Adobe公司开发的影视后期编辑与制作软件,其广泛应用于影视作品剪辑、广告短片、形象宣传片及电子相册制作中,其中的画中画效果常被应用于视频作品中。它可以通过视频特效(Video Effects)、运动(Motion)下的位置(Posi...Premiere Pro CS6是Adobe公司开发的影视后期编辑与制作软件,其广泛应用于影视作品剪辑、广告短片、形象宣传片及电子相册制作中,其中的画中画效果常被应用于视频作品中。它可以通过视频特效(Video Effects)、运动(Motion)下的位置(Position)、缩放(Scale)、旋转(Rotation)等属性来实现多个相同画面同时播放或在背景画面上放置一幅或多幅小尺寸画面同时播放的效果,以提高视频作品的生动性和观赏性。展开更多
Pr0.6-x NdxCa0.4 FeO3-δ （ x = 0.0, 0.2, 0.3, 0.4, 0.5, 0.6） were synthesized using Pechini method. A number of studies were conducted concerning composition, specific area, crystalline structure and microstructure ...Pr0.6-x NdxCa0.4 FeO3-δ （ x = 0.0, 0.2, 0.3, 0.4, 0.5, 0.6） were synthesized using Pechini method. A number of studies were conducted concerning composition, specific area, crystalline structure and microstructure of the samples by means of FT-IR, BET, XRD TG-DTA and SEM. The results show that all the samples with different doping amounts of Pr^3＋ and Nd^3＋ on A-site are fine dispersed, and mean particle size less than 100 nm. The powders have good sinterability, and the relative density is 95% after sintered at 1200 ℃ for 2 h. It is found that all specimens are entirely single phase solid solutions with orthorhombic perovskite structure, the stable perovskitetype phase is formed completely after calcination at 900 ℃.展开更多
文摘Crystal of rare earth perchlorate complex compound with proline was synthesized. By using TG, DTA and chemical analytic method, and comparing with relative literatures, its structure was characterized as [Gd2(Pro)6(H2O)4](ClO4)6, and it has a purification of 99.0% . A thermochemical cycle was designed at 298.15K, measurements of solution calorimetry of the reactants [2GdCl3· 6H2O+ 6Pro+ 6NaClO4· H2O] and the products {[Gd2(Pro)6(H2O)4](ClO4)6+ 6NaCl} were carried out in an isoperibel reaction calorimeter, respectively. The calorimetric solvent used was 2mol· L- 1 HCl. The chemical reaction and standard enthalpy of formation were calculated as:<IMG SRC="IMAGE/12180047.JPG" HEIGHT=11 WIDTH=24> =- 46.829kJ· mol- 1,<IMG SRC="IMAGE/12180048.JPG" HEIGHT=11 WIDTH=24> ([Gd2(Pro)6(H2O)4](ClO4)6,s,298.15K)=- 6532.745kJ· mol- 1.
文摘Premiere Pro CS6是Adobe公司开发的影视后期编辑与制作软件,其广泛应用于影视作品剪辑、广告短片、形象宣传片及电子相册制作中,其中的画中画效果常被应用于视频作品中。它可以通过视频特效(Video Effects)、运动(Motion)下的位置(Position)、缩放(Scale)、旋转(Rotation)等属性来实现多个相同画面同时播放或在背景画面上放置一幅或多幅小尺寸画面同时播放的效果,以提高视频作品的生动性和观赏性。
文摘Pr0.6-x NdxCa0.4 FeO3-δ （ x = 0.0, 0.2, 0.3, 0.4, 0.5, 0.6） were synthesized using Pechini method. A number of studies were conducted concerning composition, specific area, crystalline structure and microstructure of the samples by means of FT-IR, BET, XRD TG-DTA and SEM. The results show that all the samples with different doping amounts of Pr^3＋ and Nd^3＋ on A-site are fine dispersed, and mean particle size less than 100 nm. The powders have good sinterability, and the relative density is 95% after sintered at 1200 ℃ for 2 h. It is found that all specimens are entirely single phase solid solutions with orthorhombic perovskite structure, the stable perovskitetype phase is formed completely after calcination at 900 ℃.
