单宁酸与大豆分离蛋白相互作用研究

利用荧光光谱、紫外光谱和圆二色谱,从分子水平研究单宁酸与大豆分离蛋白的相互作用。结果表明:单宁酸对大豆分离蛋白有较强的荧光猝灭作用,当单宁酸浓度小于6×10~(-6)mol/L(相对于大豆分离蛋白质量分数5. 1%)时,猝灭类型为静态猝灭,当单宁酸浓度大于6×10~(-6)mol/L时,同时存在静态猝灭和动态猝灭;单宁酸通过疏水作用与大豆分离蛋白结合,导致大豆分离蛋白的色氨酸和酪氨酸残基微环境亲水性增强,但对大豆分离蛋白的二级结构没有显著影响。     

废油再生装置冷却设备涡旋压缩机结构参数优化

涡旋压缩机结构参数直接影响到润滑油分子蒸馏再生装备的效率。以基于泛函通用涡旋型线构成的变壁厚涡旋盘为研究对象,建立了以能效比为目标函数的结构参数优化模型。分析了涡旋压缩机压缩过程中由排气容积变化引起的热能变化及能效比变化。以能效比为目标函数,以涡旋盘结构参数及型线方程为变量,利用遗传算法得到能效比最优化时的变量。给出具体算例,并与等壁厚的涡旋型线构成的压缩机进行性能比较,得知前者更优。基于泛函的通用涡旋型线为涡旋压缩机型线设计拓展了思路。     

A study on integrated design conjugation profiles application analysis of scroll profiles for automobile air conditioning

The research on scroll profiles theory at present mainly is aiming at the single profile and its amelioration or parameter optimization,not aiming at the natural characteristic of the profiles equation of scroll profiles itself.Thus,the intrinsic differential equation bearing on arc-length and tangent direction angle was studied.Using the inherent differential equation and general functional theory,the conversion ideas between the expression of intrinsic differential equation and the expression in Cartesian...     

Nuclear generation: Costly,interminable delays continue for nuclear spent-fuel storage

For Nuclear Waste Strategy Coalition (NWSC) members and others following nuclear waste policy developments, 2012 opened with more promise than usual.     

MSWIFA制CSA水泥基材料的抗压强度和耐久性

以垃圾焚烧飞灰(MSWIFA）为主要原料,在实验室成功烧制了硫铝酸钙(calcium sulphoaluminate, CSA)水泥熟料,试验研究了CSA水泥基材料的抗压强度和耐久性.结果表明：CSA水泥试样各龄期抗压强度与试验用对照水泥Ⅰ的抗压强度发展规律相近,早期强度发展较快,7d后强度增长趋缓;CSA水泥基材料有较好的防收缩、抗碳化、抗渗性及抗硫酸盐侵蚀能力;垃圾灰引入的大部分氯离子是以固定氯的形式存在于水泥熟料矿物和水化产物中的,而且随着水化程度深入进行,部分游离氯也能被固化在新生成的水化产物中.     

气浮净水技术在处理石油污染水中的应用

齐鲁石化公司供排水厂利用气浮净化技术处理石油污染地下水 ,由于油的密度较小 ,且憎水性能好 ,因此用溶气气浮法除油取得了良好的效果 ,油的去除率可达 90 % ,而且具有操作方便和省电等优点     

提高我国建筑工程质量的途径

本文分析了我国建筑工程的质量状况和工程质量差的原因,在此基础上提出了改善建筑工程质量的途径和建议,影响建筑工程质量的因素很多,必须采取措施提高工程质量,主要措施包括加强管理和法制,规范建筑市场,参与建设项目的各方提高质量管理水平。     

Dechlorination of Chlorinated Aliphatic Compounds by Micro-scale Al-Zn-Mg/Fe Powders as Advanced Zero-valent Iron

Micro-scale Al-Zn-Mg/Fe composite powders (MAF) with high reactivity and good storage properties were prepared by reducing iron onto the surface of Al-Zn-Mg alloy powders. Experimental results show that MAF as advanced zero-valent iron are highly effective for degradation of chlorinated organic compounds. The efficiency of degradation for carbon tetrachloride and perchloroethylene is higher than 99% within a period of 2 h. The efficiency of degradation for trichloroethylene by MAF after storing for one month is equivalent to that by freshly prepared nano-size zero-valent iron particles.