Uniform rice-like CdS particles were synthesized in cyclohexane/Triton X-100/n-pentanol/water quaternary microemulsions. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscop...Uniform rice-like CdS particles were synthesized in cyclohexane/Triton X-100/n-pentanol/water quaternary microemulsions. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscopy, and electron diffraction. The results indicate that the size and the shape of the rice-like CdS particles can be influenced by the molar ratio of water to the surfactant（w value） and the reactant concentrations.展开更多
类受体蛋白激酶(receptor-like protein kinase,RLK)在植物生长发育等多种信号的响应中发挥重要作用。以水稻基因组为模板,通过PCR方法,扩增到一条全长2.2 kb左右的目的片段,序列分析结合RT-PCR表明,该片段由一个完整的开放阅读框组成,...类受体蛋白激酶(receptor-like protein kinase,RLK)在植物生长发育等多种信号的响应中发挥重要作用。以水稻基因组为模板,通过PCR方法,扩增到一条全长2.2 kb左右的目的片段,序列分析结合RT-PCR表明,该片段由一个完整的开放阅读框组成,无内含子,命名为OsESG1(GenBank登录号:HE 584611),其编码蛋白产物包含749个氨基酸残基。结构分析显示,该蛋白产物包含1个跨膜区、胞外S位点糖蛋白(SLG)、PAN_AP结构域和S_TKc结构域,属于S-结构域型类受体蛋白激酶,推测其在植物生殖发育过程中起作用。展开更多
In this study, several ZnO catalysts were prepared using different zinc sources as precursors. The different catalyst mor- phologies obtained were used to degrade photocatalytically a methyl orange (MO) dye solution, ...In this study, several ZnO catalysts were prepared using different zinc sources as precursors. The different catalyst mor- phologies obtained were used to degrade photocatalytically a methyl orange (MO) dye solution, which was used to model wastewater pollution. The precursors, Zn(CH3COO)2, ZnCl2 and Zn(NO3)2, were individually added to a solution containing cetyltrimethylammonium bromide (CTAB) and sodium hydroxide (NaOH) for the hydrothermal synthesis of ZnO. After the hydrothermal reaction, the samples of ZnO were filtered, washed, dried at 110?C and calcined at 550?C, resulting in the formation of the rod-like (designated ZnO(I)), the rice-like (designated ZnO(II)) and the granular-like (designated ZnO(III)) catalysts. The catalysts were characterized by X-ray diffraction (XRD), field-emission scanning electron microscope (FE-SEM) and their UV-visible diffuse reflectance spectra (UV-Vis DRS). The results indicate that the photocatalytic degradation of the MO solution, after 60 min of UV irradiation, can reach percentages of 40%, 96% and 99% using the catalysts ZnO(I), ZnO(II) and ZnO(III), respectively. The morphology of the ZnO catalyst had an ap- parent effect on the rate of the photocatalytic degradation of MO. The ZnO(II) and ZnO(III) catalysts have higher S/V ratios and a greater content of oxygen vacancies, resulting in different absorbances of ultraviolet light, which leads to different rates of photocatalytic degradation of MO.展开更多
文摘Uniform rice-like CdS particles were synthesized in cyclohexane/Triton X-100/n-pentanol/water quaternary microemulsions. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscopy, and electron diffraction. The results indicate that the size and the shape of the rice-like CdS particles can be influenced by the molar ratio of water to the surfactant（w value） and the reactant concentrations.
文摘类受体蛋白激酶(receptor-like protein kinase,RLK)在植物生长发育等多种信号的响应中发挥重要作用。以水稻基因组为模板,通过PCR方法,扩增到一条全长2.2 kb左右的目的片段,序列分析结合RT-PCR表明,该片段由一个完整的开放阅读框组成,无内含子,命名为OsESG1(GenBank登录号:HE 584611),其编码蛋白产物包含749个氨基酸残基。结构分析显示,该蛋白产物包含1个跨膜区、胞外S位点糖蛋白(SLG)、PAN_AP结构域和S_TKc结构域,属于S-结构域型类受体蛋白激酶,推测其在植物生殖发育过程中起作用。
文摘In this study, several ZnO catalysts were prepared using different zinc sources as precursors. The different catalyst mor- phologies obtained were used to degrade photocatalytically a methyl orange (MO) dye solution, which was used to model wastewater pollution. The precursors, Zn(CH3COO)2, ZnCl2 and Zn(NO3)2, were individually added to a solution containing cetyltrimethylammonium bromide (CTAB) and sodium hydroxide (NaOH) for the hydrothermal synthesis of ZnO. After the hydrothermal reaction, the samples of ZnO were filtered, washed, dried at 110?C and calcined at 550?C, resulting in the formation of the rod-like (designated ZnO(I)), the rice-like (designated ZnO(II)) and the granular-like (designated ZnO(III)) catalysts. The catalysts were characterized by X-ray diffraction (XRD), field-emission scanning electron microscope (FE-SEM) and their UV-visible diffuse reflectance spectra (UV-Vis DRS). The results indicate that the photocatalytic degradation of the MO solution, after 60 min of UV irradiation, can reach percentages of 40%, 96% and 99% using the catalysts ZnO(I), ZnO(II) and ZnO(III), respectively. The morphology of the ZnO catalyst had an ap- parent effect on the rate of the photocatalytic degradation of MO. The ZnO(II) and ZnO(III) catalysts have higher S/V ratios and a greater content of oxygen vacancies, resulting in different absorbances of ultraviolet light, which leads to different rates of photocatalytic degradation of MO.
