TiO2-Al2O3复合光催化剂的制备及其对甲基橙的降解

以Ti（SO4）2和Al2（SO4）3.18H2O为反应物,用乙醇助溶剂水热法制备了TiO2-Al2O3复合光催化剂,考察了铝/钛摩尔比、水热反应温度、乙醇体积分数及pH值对复合材料光催化效率的影响。X射线衍射测试显示复合材料中的TiO2为锐钛矿和金红石相的混晶结构,紫外-可见漫反射光谱分析表明其吸收光谱发生蓝移,BET测试表明该复合材料具有较大的比表面积。     

新时期高校机关党建育人功能初探

在"三全育人"过程中,高校机关部门要从管理和服务角度发挥其育人功能。阐述了发挥高校机关党建工作育人功能的必要性和可行性。认为高校机关党建工作应该加强发挥机关育人功能的机制建设,从而保证机关在育人方面发挥积极作用。     

含有机氮的钙辟复合稳定剂在PVC电缆料中的应用

研究了有机氮热稳定剂的制备、常用品种及其对PVC的稳定机理,刚果红试验及热老化试验结果均表明,添加有机氮稳定剂的钙/锌皂复合热稳定剂对PVC电缆料的稳定效果优于未加有机氮稳定剂的钙/锌皂复合热稳定剂。     

含有机氮的钙/锌复合稳定剂在PVC电缆料中的应用

研究了有机氮热稳定剂的制备、常用品种及其对PVC的稳定机理,刚果红试验及热老化试验结果均表明,添加有机氮稳定剂的钙/锌皂复合热稳定剂对PVC电缆料的稳定效果优于未加有机氮稳定剂的钙/锌皂复合热稳定剂.     

Coloration of stainless steel at room temperature by triangular current scan method

Interference films with gold, red, blue or green color have been successfully produced on stainless steel at room temperature by applying the triangular current scan method. The anodic current scan over the transpassive region led to the forced dissolution of the steel, and the cathodic current on the reverse scan attributed to the reduction of chromate (VI) to Cr³⁺. The metal ions generated by both reactions were hydrolyzed to form an interference film. The thickness (coloration) of the interference film depended linearly on the electrolysis time and the logarithm of the space between the two triangular waves.     

不同季度渗滤液性质研究

用不同孔径的系列膜对不同季度渗滤液进行梯度分离。对分离前后渗滤液的COD、TOC、pH、TP、氨氮、正磷酸盐、色度、浊度和电导率等参数进行了测定，并建立了各参数与不同孔径膜的关系。结果表明：老港填埋场3月份渗滤液比6月份渗滤液污染性强，渗滤液的C：N：P的比分别为1168：232：1和1003：377：1，对于生物处理工艺来说，其C：N：P比例明显失调。同时发现：渗滤液的绝大部分污染物质集中于可溶性部分，而渗滤液中的P主要与大分子的悬浮物和粗胶体结合。在浊度与色度这两指标中，悬浮物和粗胶粒大约贡献一半左右。     

体验式特色生鲜农产品营销模式——“山水食客”

体验式营销提供的不只是让顾客感受产品和服务,更是给顾客一种感觉,一种情绪上、体力上、智力上甚至精神上的体验。每个人都有圈子,既是产品的受用者,又是传播者,这就是社会化传播——口碑营销。将农产品引入到这个圈子里,利用电商这一手段来扩大市场,可以将生鲜农产品市场的雪球越滚越大。     

均温型(JW)低压甲醇合成塔内件设计及使用

阐述了低压均温甲醇合成塔内件开发设计的基本情况，利用计算机模拟软件程序进行计算，并对合成塔性能，生产指标和经济效益进行比较。     

低温过程多流股换热器网络综合

多流股换热器主要应用在低温过程领域.本文针对低温过程换热器网络的特点,基于流股虚拟温度的T-H图提出了利用遗传/模拟退火算法进行低温过程换热网络综合的方法.低温过程传热温差较小,在流股温差贡献值的选取上充分考虑了流股热力学平均温度的影响,使其取值更加合理;冷公用工程的利用不同于常温换热网络,温度越低其相应的费用越高,通过采用分批-逐次利用的原理分配冷公用工程,得到冷公用工程的温位及相应的匹配位置,能够有效地利用过程系统的传热温差,降低换热网络的操作费用;该方法利用虚拟T-H图法产生初始解,具有决策变量少,产生初始解均为可行的特点,能显著提高遗传模拟退火算法的计算效率,并适用于不同材质、不同传热膜系数网络的设计和优化;以国内某乙烯装置脱甲烷塔预冷系统综合为实例进行了分析.     

Preparation of monodisperse water-in-oil-in-water emulsions using microfluidization and straight-through microchannel emulsification

Water-in-soybean oil-in-water (W/O/W) emulsions with an internal water phase content of 10–30% (vol/vol) were prepared by a two-step emulsification method using microfluidization and straight-through microchannel (MC) emulsification. A straight-through MC is a silicon array of micrometer-sized through-holes running through the plate. Microfluidization produced water-in-oil (W/O) emulsions with submicron water droplets of 0.15–0.26 μm in average diameter (d _av,w/o) and 42–53% in CV (CV_w/o) using tetraglycerin monolaurate condensed ricinoleic acid esters (TGCR) and polyglycerin polycondensed ricinoleic acid esters (PGPR) as surfactants dissolved in the oil phase. The d _av,w/o and viscosity of the W/O emulsions increased with an increase in internal water phase content. Straight-through MC emulsification was performed using the W/O emulsions as the to-be-dispersed phase and polyoxyethylene (20) sorbitan monooleate (Tween^® 80) as a surfactant dissolved in the external water phase. Monodisperse W/O/W emulsions with d _av,w/o/w of 39.0–41.0 μm and CV_w/o/w below 5% were successfully formed from a straight-through MC with an oblong section (42.8×13.3 μm), using the TGCR-containing systems. The d _av,w/o/w of the monodisperse W/O/W emulsions decreased as the internal water phase content increased because of the increase in viscosity of the to-be-dispersed phase. Little leakage of the internal water droplets and no droplet coalescence or droplet break-down were observed during straight-through MC emulsification.