Monolayer of octadecylamine（ODA） and salmon sperm DNA or salmon sperm DNA-Cd complex were studied on air-water interface by π-A isotherm. After being co-transferred onto substrates by Langmuir-Blodgett technique, a...Monolayer of octadecylamine（ODA） and salmon sperm DNA or salmon sperm DNA-Cd complex were studied on air-water interface by π-A isotherm. After being co-transferred onto substrates by Langmuir-Blodgett technique, atomic force microscope（AFM） measurements show the DNA molecules are packed into lines in the film, due to the interactions between the ODA and DNA molecules. By exposing the ODA and DNA-Cd complex LB film to H2S, needle-like CdS nanoparticles were formed along the DNA lines as characterized by transmission electron microscope（TEM）. Electron diffraction（ED） image indicates that the so prepared needle-like CdS is a new kind of nanostructured materials.展开更多
本研究以绵羊睾丸组织为材料,利用RT-PCR技术获得绵羊硫氧还蛋白类蛋白2(Thioredoxin like protein 2,Txl-2)基因的CDS区序列,并对其进行生物信息学分析。结果表明,克隆得到的绵羊Txl-2基因CDS区为795 bp,编码264个氨基酸。生物信息学...本研究以绵羊睾丸组织为材料,利用RT-PCR技术获得绵羊硫氧还蛋白类蛋白2(Thioredoxin like protein 2,Txl-2)基因的CDS区序列,并对其进行生物信息学分析。结果表明,克隆得到的绵羊Txl-2基因CDS区为795 bp,编码264个氨基酸。生物信息学分析结果表明,Txl-2编码的蛋白无跨膜区、信号肽和N-糖基化位点,存在多个磷酸化位点;预测出了Txl-2蛋白的二级结构和三级结构;Clustel W方法对比绵羊Txl-2与绵羊、山羊预测序列同源性最高。展开更多
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
A novel zeolite-like metal-organic framework, [Cd12（trz）12＇F10＇（SiF6）3]·（H3O）4 （Htrz = 1,2,4-triazole）, has been synthesized under solvothermal conditions using 1H-l,2,4-triazole-3- carboxylic acid and ...A novel zeolite-like metal-organic framework, [Cd12（trz）12＇F10＇（SiF6）3]·（H3O）4 （Htrz = 1,2,4-triazole）, has been synthesized under solvothermal conditions using 1H-l,2,4-triazole-3- carboxylic acid and CdF2 as the starting materials. The complex has been characterized by elemental analysis, IR, SEM-EDS, gas adsorption, powder and single-crystal X-ray diffraction analyses. The title complex crystallizes in the cubic 1-43m space group, with a = 14.6436（8）, V= 3140.1（3）A3, Z = 2, Mr = 2857.96, D,.= 3.023 g/cm3 and F（000） = 2668. The final R = 0.0653 and wR = 0.1880 for 586 observed reflections with 1 〉 2σ（I）. In the title complex, three adjacent Cd（ll） centers are connected by three p3-bridging triazole ligands to form triagonal secondary building units （SBUs）, which are further interconnected to form a three-dimensional skeleton with tetrahedral cages.展开更多
文摘Monolayer of octadecylamine（ODA） and salmon sperm DNA or salmon sperm DNA-Cd complex were studied on air-water interface by π-A isotherm. After being co-transferred onto substrates by Langmuir-Blodgett technique, atomic force microscope（AFM） measurements show the DNA molecules are packed into lines in the film, due to the interactions between the ODA and DNA molecules. By exposing the ODA and DNA-Cd complex LB film to H2S, needle-like CdS nanoparticles were formed along the DNA lines as characterized by transmission electron microscope（TEM）. Electron diffraction（ED） image indicates that the so prepared needle-like CdS is a new kind of nanostructured materials.
文摘本研究以绵羊睾丸组织为材料,利用RT-PCR技术获得绵羊硫氧还蛋白类蛋白2(Thioredoxin like protein 2,Txl-2)基因的CDS区序列,并对其进行生物信息学分析。结果表明,克隆得到的绵羊Txl-2基因CDS区为795 bp,编码264个氨基酸。生物信息学分析结果表明,Txl-2编码的蛋白无跨膜区、信号肽和N-糖基化位点,存在多个磷酸化位点;预测出了Txl-2蛋白的二级结构和三级结构;Clustel W方法对比绵羊Txl-2与绵羊、山羊预测序列同源性最高。
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.
基金National Natural Science Foundation of China(21101090)Natural Science Foundation of Jiangxi Province(20114BAB213001)Education Department of Jiangxi Province(GJJ12041)
文摘A novel zeolite-like metal-organic framework, [Cd12（trz）12＇F10＇（SiF6）3]·（H3O）4 （Htrz = 1,2,4-triazole）, has been synthesized under solvothermal conditions using 1H-l,2,4-triazole-3- carboxylic acid and CdF2 as the starting materials. The complex has been characterized by elemental analysis, IR, SEM-EDS, gas adsorption, powder and single-crystal X-ray diffraction analyses. The title complex crystallizes in the cubic 1-43m space group, with a = 14.6436（8）, V= 3140.1（3）A3, Z = 2, Mr = 2857.96, D,.= 3.023 g/cm3 and F（000） = 2668. The final R = 0.0653 and wR = 0.1880 for 586 observed reflections with 1 〉 2σ（I）. In the title complex, three adjacent Cd（ll） centers are connected by three p3-bridging triazole ligands to form triagonal secondary building units （SBUs）, which are further interconnected to form a three-dimensional skeleton with tetrahedral cages.
