鸡油氧化制备热反应鸡肉味香精的工业条件研究

以豆粕和鸡肉为原料,利用Mailard反应技术和脂肪控制氧化技术制备鸡肉味香精,系统研究了鸡肉蛋白及大豆蛋白水解反应、鸡油控制氧化反应以及Mailard反应的实验室最佳反应条件,并在工业生产中验证.实验所得鸡油氧化较佳反应条件为:温度130℃,时间2 h,空气流速为每100 g油0.15 m3/h;美拉德反应条件为:温度90℃,pH 8.0,时间120 min.     

GABA引起正常和病理性疼痛大鼠DRG神经元去极化反应的比较

为探究GABA在痛觉信息传递中的作用,观察分析了γ-氨基丁酸(GABA)在神经病理性疼痛中的作用。制备神经病理性疼痛大鼠模型,取其L4-L5背根神经节(dorsal root ganglion,DRG),运用细胞内微电极记录技术观察在灌流GABA及其受体阻断剂的情况下,引起DRG神经元膜电位的变化。结果表明,病理性疼痛模型组大鼠的DRG神经元对不同浓度GABA引起的去极化反应均明显小于正常对照组大鼠(P0.05),这说明神经病理性疼痛可通过减弱GABA介导的突触前抑制易化痛觉信息的传递。     

New secondary batteries and their key materials based on the concept of multi-electron reaction

Facing the significant applications in energy field, this paper introduces how to construct new high specific energy secondary batteries based on the concept multi-electron reaction and by designing multi-electron electrode materials. Recent progress on those new secondary batteries and their key materials based on the theory of multi-electron reaction are overviewed. Representative multi-electronic electrode materials, such as metal borides, metal fluorides, sulfur composite electrode materials and ferrates are briefly introduced, as well as the new secondary battery systems constructed with these materials. Thus gives the significance of the development based on multi- electron reaction mechanism of secondary batteries and their key materials for new chemical battery systems and related energy materials.     

Growth mechanism of liquid Hg/solid β-HgS metal-semiconductor heterostructures

Density functional theory （DFT） was utilized to simulate the reactions occurred in the mixture solution of cysteine and Hg（II） ions with the ratio 〈 2. Simulation result shows that Hg ions will coordinate to cysteine by the thiol groups with the form of S-Hg2 and S-Hg3; and moreover, the content of free Hg ions can only be reduced by these two forms. OH- plays an important role in the growth of β-HgS, because its nucleophilic substitution reaction supplies plenty of Hg-S-Hg radicals, which will be adsorbed onto the surface of liquid mercury ball and form the precursor of 13-HgS（111） plane. Three valent bonds adsorption of Hg-S-Hg radicals onto the surface of Hg ball has more adsorption energy （-32.768 kcal mol-1） than that of two valent bond adsorption （-20.882 kcal - mol-1）. Hg balls will stop growing after completely covered with Hg-S-Hg radicals and their size will be limited. The growth direction of β-HgS is parallel to the ＂repel- ling＂ force, that is [111] direction in β-HgS lattice. The calculated results are in good agreement with the experimental observations, demonstrating that the DFT method can be taken as a very useful tool to interpret the solution reactions that cannot be solved by conventional methods.     

离子反应复习三部曲

一、知识概括 （一）离子反应 1．概念：在溶液中发生的有离子参加的反应。2．类型：复分解反应，在溶液中的置换反应，溶液中的氧化还原反应，碱性氧化物和酸的反应，酸性氧化物与碱的反应，水解反应，电极反应，电解反应。3．实质：离子反应总是向着使溶液中某些离子浓度减小的方向移动。     

一个带有Holling Ⅳ功能反应的半比率依赖捕食-食饵系统周期解的存在性

应用重合度延拓定理,讨论一个带有Holling Ⅳ功能反应的半比率依赖捕食-食饵系统周期解的存在性.     

循环流化床锅炉在环境保护方面的探讨

1.氧化硫的排放 在燃烧过程中产生的氧化硫与伴随煤一道进入的添加物发生有利反应,其中添加物的碳酸钙（石灰石）为主要组成成份。石灰石在预定条件下在炉内参与化学反应。从而生成大量的活性吸收剂.即单纯的石灰。其反应过程为CaO与燃料中的硫在反应中生成的SO2发生进一步反应,进而生成硫酸钙。化学反应过程为：     

对几道有机化学反应式写法的辨析

依据化学反应历程对几种不同教科书中的烯烃与卤素加成、氢化铝锂或硼氢化钠还原醛酮、卤仿反应的相关习题进行科学的辨析，对如何得出准确、规范和严谨的答案进行探讨。     

生物法转化丙烯腈制取丙烯酰胺的研究

本文研究了一株腈水合酶产生菌ｉｃｒｏｃｏｃｃｕｓ ｓｐ．Ｓ１１５生长，产酶的条件及其所产酶的反应条件。Ｓ１１５在选定的培养基中，于３０℃摇床培养７２ｈ，其生长较好，酶活也较高。在所研究所几种诱导物中，丙腈对产酶的诱导作用最好。本文还研究了培养过程中补腈对产酶的影响以及底物浓度，反应液ｐＨ对腈水合酶反应的影响。