Effect of Transesterification Conditions on Unsaturation Degree of Micro-biodiesel 酯交换条件对微生物柴油的不饱和度的影响
The essay probes into the relation between the unsaturation and the functional group as well as the influence of the functional group on the organic compound. 前言:本文探讨了不饱和度与官能团关系以及官能团对有机化合物合成的影响。
Effects of Increase of Unsaturation of Fatty Acids on Salt and Cold Tolerance in Transgenic Arabidopsis Thaliana 脂肪酸不饱和度的增加对转基因拟南芥植株生理及抗盐抗低温的影响
I am weak. I am weak, very weak. Because of their high degree of unsaturation, they are less resistant to oxidation than other animal or vegetable oils. 因为它们的高度不饱和性,它们比其它动植物油抗氧化性弱。
To produce micro-biodiesel from microbial oil, transesterification conditions were studied using oil from Rhodotorula glutinis as raw material using unsaturation index of fatty acid ( UIFA) as index. 为了开发微生物油脂生产微生物柴油,以胶红酵母油脂为材料,以脂肪酸不饱和指数(UIFA)为指标,探讨了微生物油脂生成脂肪酸甲酯工艺的影响因素。
The Effect of Polymerization Process on Properties of Polyether of Low Unsaturation Degree and High Molecular Weight 聚合工艺对低不饱和度高相对分子质量聚醚性能的影响
Determination of Unsaturation Distribution for Hydroxyl-Terminated Polybutadiene by Means of Near-Infrared Spectroscopy 近红外光谱法测定端羟基聚丁二烯不饱和度分布
From the molecular formula alone, we can deduce the "degrees of unsaturation" in the molecule. 仅从分子式,我们就能推断分子中的不饱和度。
The concept and calculation of degrees of unsaturation in organic chemistry are discussed in detail in this paper. 阐述了有机化学中不饱和度的概念,并对其计算作了详尽的介绍。
Method of Judging the Hybridization Form of Central Atomic Orbital by Unsaturation 由分子的不饱和度判断中心原子的杂化类型
Our results showed that silicon promoted the growth of wheat, alleviated peroxidation of membrane lipid, and increased unsaturation of fatty acid in the leaves. 结果显示,施硅促进了小麦的生长;降低了膜脂过氧化程度,提高了叶片类脂脂肪酸的不饱和度。
Using of degrees of unsaturation from the molecula formula, valuable structural information can be obtained and this can help greatly in solving organic structural problems. 利用从分子式计算的不饱和度值,可以获得很有价值的结构信息,从而快速、准确地推测出有机化合物的结构。
The diffusion limiting current densities are directly proportional to the △ m_ ( I2, max), which is defined as unsaturated extent of iodine, and it is different in the definition and the value from the usual degree of unsaturation of iodine in the electrolyte solution. 其极限扩散电流密度与本文中定义的碘的未饱和度△m(I2),max成正比,后者是一个与通常所指的碘的不饱和度在意义和数值上都不相同的物理量。
The results showed that the oxidative stability of fats and oils were effected by the temperature, unsaturation of fatty acid, antioxidant and enhancer. 结果表明,温度的高低,脂肪酸不饱和度,抗氧化剂和增效剂的使用,均与油脂氧化稳定性有着密切的关系。
The polyether polyols which has higher molecular weight, narrower molecular weight distribution and lower unsaturation can be prepared by using double metal cyanide ( DMC) complex catalysts. 用双金属氰化物(DMC)络合催化剂可制得相对分子质量高、相对分子质量分布窄和不饱和度低的聚醚多元醇。
Unsaturation in the fatty acid chain is the most significant factor causing lower cetane number. 脂肪酸链中的不饱和键是导致CN下降的最重要因素。
The article builds individual thinking model, resource model, development models of the science in unsaturation and saturation condition and so on from the angle of the resources. 本文从资源的角度建立了个人思维模型、资源模型、未饱和与饱和状态下的科学发展等几个数学模型。
The problems in production of low unsaturation polyether with DMC catalyst were introduced. 介绍了使用DMC催化剂生产低不饱和度聚醚时存在的问题。
Basic equation of saturated-unsaturated seepage is built based on seepage continuity and motion Equations, which take saturation zone and unsaturation zone into account together and avoid difficult problems of traditional numerical solution, such as solution of free surface of seepage etc. 从渗流连续性方程和渗流运动方程出发,阐述了饱和&非饱和流统一的渗流基本方程,将饱和区和非饱和区统一来考虑就避免了求解渗流自由面等传统的数值求解的棘手问题。
The contents of unsaturated fatty acids of thylakoid membrane lipids decreased and the saturated fatty acids increased with stressing time, resulting in a reduction in the index of unsaturation of fatty acid ( IUFA). 类囊体膜脂不饱和脂肪酸含量降低,饱和脂肪酸含量增加,导致膜脂不饱和指数(IUFA)逐渐降低;
The polyether has very low unsaturation and high equivalent weight. 它具有极低的不饱和度和很高的相对分子质量。
Arrhenius analysis showed that VDE was sensitive to both chilling and unsaturation level of thylakoid membrane lipids. Arrhenius分析证明,VDE对低温和膜脂不饱和度都敏感。
The index of unsaturation fatty acid and palmitoleic acid/ linoleic acid in mitochondrial membrane lipids can be used as biochemical index of chilling-resistance in some plants. 线粒体膜脂脂肪酸不饱和指数和亚油酸/棕榈酸也可作为玉米芽期抗冷性指标。
A Study on Application of Low Unsaturation Polyether Polyol in PU-RIM Products with Low Modulus 低单聚醚多元醇在低模量PU-RIM中的应用研究
The sulfonating reaction was found on the unsaturation bonds of polybutadiene basing on the research of dynamics of the sulfonating action and FTIR analysis of reacted products. 通过研究磺化反应的动力学和对磺化产物的分析测试,提出磺化发生在聚丁二烯的双键上新观点。
It can distinguish the fried oil by acid value ( AV), iodine value, distribution of the fatty acids and relative unsaturation value, varieties and contents hydrocarbons. 利用测定油脂的酸价、氧化值、碘值、脂肪酸分布和相对不饱和度值以及烃类化合物种类和含量,来鉴别煎炸老油。
Preparation Processes for the Catalysts and Low-unsaturation Polyether Polyols 低不饱和度聚醚多元醇及其催化剂的制备工艺
Increase of Content of Primary Hydroxyl Groups of Polyether Polyols with Low Unsaturation 低不饱和度聚醚多元醇伯羟基含量的提高
Based on the energy state of soil moisture content, soil hydrodynamics studies water flow, solute and heat transport in unsaturation soil. 土壤水动力学是以土壤中水分的能态为基础研究非饱和土壤中水分、溶质和热量运移问题的学科。
The tolerance of plants to chilling stress was closely connected with the fatty acid unsaturation of plant membrane lipids. 植物的抗冷性与膜脂中脂肪酸的不饱和程度密切相关。