最优化

The effects of reaction time, temperature, alkalic degree and the feed ratio on the hydrolysis reaction were investigated by means of the orthogonal design method. And the optimum operating conditions were got. Polyacrylate sodium was prepared under the optimum conditions.

利用正交设计，讨论了反应时间、温度、碱浓度、投料比等因素对水解反应的影响，获得了优化的水解反应条件，并在最优化的条件下制得聚丙烯酸钠。

Using colchicine for the induction of polyploidy plants is one of the ways of artificial induction. Colchicine, root length and light were selected as the influencing factors to induce polyploidy Amorpha optimal with the root tip smeared, to explore the optimal induction conditions for polyploidy Amorpha optimal.

用秋水仙素对植物进行多倍体诱导是人工诱导的方法之一，为了探究诱导紫穗槐多倍体的最优化条件，选取秋水仙碱，根长以及光照情况3个影响因素，对紫穗槐根尖进行涂抹处理诱导多倍体。

In order to meet the needs of optimization selection for antiradiation material and improve the quanlity of radiation protections observation is carried out,which is used to check GF-3 type radiation protection coating's shielding function in building technology X-ray examination room.

为了适应对抗辐射材料的最优化选择，提高辐射防护的质量，对GF-3型辐射防护涂料在工业X射线探伤室建造中的射线屏蔽的性能进行观测与研究。结果表明，通过两个单位探伤室的实际测试辐射剂量率降低达到90％以上。

To eliminate the limit, a hybrid objective function weighted by antitangent function is constructed, which behaves like an objective function of norm for small data points and like an objective function of norm for large data points, restraining the influence of false data points on inversion procedure.

为了解决这一问题，利用反正切函数作为加权因子构造了反正切混合目标函数，并利用模型试验进行了验证。简要阐述了最优化目标函数的构造方法；给出了利用反正切函数构造混合目标函数的基本原理，并对目标函数的微分特征和概率特征进行了分析；利用模型论述了反正切混合目标函数中控制参数μ和σ的意义，μ控制反正切函数变化的速度，σ控制数据误差项被处理或加权的方式。

Optimization of location of resource in whole society, externality of radiation detriment, limited reason and asocial Implementation of external control needs institution.

这里讨论的外部约束限定为不同决策者之间的约束，在全社会范围内资源的最优化配置、辐射危害的外部性以及决策者的有限理性和投机性构成了外部约束的充要条件。

The best operational parameters were that the reaction temperature was 105℃, the reaction time was 3 hours, the mixture ratio of n: n=1:2.79, using N,N-dimethyl benzylamine as catalyst, and 2,6-Di-tert-buthyl-p-cresol as inhibitor.

结果表明，合成TGICA的最优化条件为：n/n=l：2.79；催化剂为N，N－二甲基苯胺；阻聚剂为2，6－二叔丁基对甲酚；反应温度(105±2)℃；反应时间3h。丙烯酸的转化率可达到99.7%。

In this thesis betulin was purified by recrystallization with chloroform and methanol mixture, and orthogonal design had been taken to optimize the conditions of recrystallization including the volume and ratio of chloroform and methanol mixtures.

在白桦酯醇的纯化方面目前比较成熟的方法是氯仿+甲醇混合溶剂重结晶来纯化白桦酯醇，本文通过正交设计，得到最优化的溶剂比例和用量。

In bioreaction engineering teaching,we put emphasis on theoretical treatment,stressing the creation and cultivation of scientific mode of thinking.The study enthusiasm and desire to participate of students were improved by using interactive teaching.Some numerical methods were supplemented to eliminate the fear of students to some complicated mathematical problems.

生化反应工程是生物工程专业的主干课，是以生化反应动力学为基础，综合运用传递过程原理、设备工程学、过程动态学及最优化原理等化学工程学的方法，进行生化反应过程的工程分析与开发，以及生化反应器设计、放大、操作和控制的一门学科[。1]因此，生化反应工程是化学反应工程的一个分支，是当前反应工程研究的前沿领域。

Optimization methods/hot water boiler ; heat exchanger system ; shower calorifier system ; steam jet system

最优化方法/热水锅炉；换热器系统；喷淋加热系统；蒸汽喷射系统

This paper deals with how to use optimum method to make economical comparisons of the following heating systems: the hot water boiler, heat exchanger system, steam jet system and shower calorifier system, which are widely used in industrial boiler house.On condition that the nature of the untreated waters, rate of condensation recovery, fuel costs, heating days, and temperature drop of flow and return water are different, a lot of analysis and comparisons have been made in this paper and optimal designs for...

本文论述了对工业企业锅炉房内几种常用热水制备系统(热水锅炉、换热器系统、蒸汽喷射系统和喷淋加热系统)如何应用最优化方法进行经济比较的问题；并且对其在不同给水水质、燃料价格、采暖天数、凝结水回收率以及不同的送、回水温差等条件下，作了大量分析和比较，从而为计算者推荐出不同条件下的最优方案。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。