心脑血管疾病患者的护理干预探讨

目的分析心脑血管疾病患者生存质量(QOL)的影响因子,探讨其护理干预措施。方法参照心脑血管疾病病人的生存质量测评标准(QOL),在2007年6月至2009年12月,我院将216例住院或门诊病例,随机分为试验组和对照组,试验组除常规护理外,给予积极的护理干预措施,对照组只给予常规护理。结果 2组患者的QOL总分有显著性差异(P<0.05)。结论综合性护理干预措施可改善病人的心理状态,提高病人的生活生存质量。     

TiO2薄膜的低温制备及其光催化活性研究

利用所制备的锐钛矿型TiO2水溶胶提拉法成膜,用Raman和TEM分析了TiO2薄膜的晶型和基团结构.可知TiO2颗粒为锐钛矿晶型,晶粒在10 nm左右,并以多个单晶的形式粘结成膜.气体光催化和甲基橙降解实验表明,所制得的TiO2薄膜具有良好的光催化活性.     

Preparation, characterization and photocatalytic property of Ag-loaded TiO2 powders using photodeposition method

The Ag particles were photodeposited on TiO₂ powder surface. The X-ray diffraction (XRD), Raman spectroscopy, transmittance electron microscopy (TEM), UV-vis diffused reflection spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and photoluminescence (PL) spectrophotoscopy were used to investigate the structure and morphologies of the samples. It is found that the loaded Ag particles have no effect on the XRD patterns, and the Raman scattering becomes much stronger due to the surface Raman enhancing effect. The TEM images show that the TiO₂ grains are in the shape of short sticks, and the spherical Ag particles with hexagonal structure are adhered to the TiO₂ grain surface tightly. XPS result shows that the loaded Ag particles can not affect the chemical states of Ti and O, and they are mainly in the form of metal Ag. A wide plasmon absorption appears on the UV-vis spectra after Ag photodeposition. The loaded Ag further greatly decreases the PL intensity, which partly indicates the electron transfer from TiO₂ to Ag. The photocatalytic activities firstly increase with the content of loaded Ag, and then sharply decrease. Finally, the photocatalytic mechanism related to Ag-loaded TiO₂ powders was discussed in detail. Funded by the National Natural Science Foundation of China (No. 50702041), and the Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT, IRT0547), Ministry of Education, China