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The pulse heating coulombic titration was applied to the determination of oxygen in titanium diboride,the titrimetry was studied to determine amounts of oxygen in titanium diboride,the determine method was established.

采用脉冲加热库仑滴定法测定二硼化钛中的氧,研究了二硼化钛中氧量的测定条件,建立了分析方法,能准确、快速地测定二硼化钛中的氧含量,并能推广应用于金属陶瓷材料中氧含量的测定。

The variation of gas parameters in the real compression process of the compressor is worked out in the computer simulation, and effects of some parameters on the performance of the system are studied.

本文建立了这种压缩机的热力模型、泄漏模型、传热模型、和吸气加热损失模型等构成的综合数学模型,进行了计算机仿真研究,给出实际工作过程中气体参数的变化规律和对性能的影响。

Glucose has obvious protection from the hot stability of the deer placenta polypeptide, The denaturation rate of the deer placenta polypeptide reduces 40.11%, the antioxygenic property enhances 34.19% when it is heated under 60℃ for 30min with glucose's joining.

葡萄糖对鹿胎盘多肽的热稳定性有明显的保护作用,它使鹿胎盘多肽在60℃的条件下加热30min 后的变性率降低了40.11%,抗氧化性提高了34.19%。

To exploit the resources of shikimic acid, the content of shikimic acid in Masson pine leaf, Oriental arborvitae leaf and Star anise, the extraction and recovery experiments were studied by HPLC.

为了开发莽草酸资源,以高效液相色谱法分析了马尾松、侧柏以及八角茴香中的莽草酸含量,并研究了马尾松中莽草酸的超声提取、加热回流两种提取方法和不同加标水平的回收试验。

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。

When the ratio of starch to sodium chloroacetate is 1:1, the optimal reaction conditions were: microwave radiation time 30 min, addition of 12 mL 96% isopropyl alcohol, CMS with DS 0.7 and solution viscosity of 10000~20000 mPa.s was produced, and better appearance was presented compared with that by dry method.

使用微波辐射作为反应的加热方式,考察了微波辐射时间、碱、溶剂等条件对微波法制备羧甲基淀粉产品取代度和黏度的影响,并最终确定了在微波照射时间为30min,加入96%异丙醇条件下制备出取代度达0.7,黏度在10000~20000mPa.s的产品。

Attributed to the lubricant-effect of flexible LCPB,cold crystallization was observed in stereoblock PB.Bd-Ip block copolymersHTPB-b-PI,C-(PI-b-HTPBn,C-n,and PI-b-HTPB -b-PI and Bd-St block copolymersHTPB-b-PS,C-(PS-b-HTPBn,C-n, and PS-b-HTPB-b-PS containing crystallizable HTPB were well synthesized,the microstructures and properties of the copolymers were investigated in detail.

加热器通过与异戊二烯或者苯乙烯共聚,合成了含高反式聚丁二烯的丁二烯-异戊二烯嵌段共聚物包括HTPB-b-PI,C-(PI-b-HTPBn,C-n和PI-b-HTPB-b-PI和丁二烯-苯乙烯嵌段共聚物包括HTPB-b-PS,C-(PS-b-HTPBn,C-n和PS-b-HTPB-b-PS,对嵌段共聚物的结构和性能进行了系统的研究。

By combining k-ε models with the wall function calculation method and using the SIMPLE method for programming,the flow field in exhaust facility ,which has a low pressure heater and pressure reducer and desuperheater in it,has been treated with three-dimensional numerical simulation and the velocity distribution of the flow field in exhaust facility is herewith obtained.

采用k-ε模型并结合壁面函数法,利用SIMPLE算法编程,对某具有内置式低压加热器和减温减压器的直接空冷汽轮机排汽装置的内部流场进行了三维数值模拟,得到了整个排汽装置内部流场的速度分布情况。

The electromagnetic field in the detacher and the temperature field in the workpiece during the induction heating process were simulated by computer and the distributions of the magnetic density and the temperature as well as the temperature field history were obtained.

对感应加热过程中拆卸器内的电磁场和工件内的温度场进行了计算机仿真,得出了磁场强度和温度的分布规律及温度对时间历程的变化规律。

In order to cutting down the cost, flocculation of recombined Erwinia carotovora-Eccl3B cell from broth, influence of temperature, pH and oxidants on the separation of PHB were studied; and the method which measure the molecular weight of PHB by intrinsic viscosity was also studied; furthermore, a phenomenon was found that insolubility of PHB in chloroform can be changed by pretreated at over 120℃ for the fist time, and the mechanism of this phenomenon was explored.

为了降低成本,提高生产效率,本文针对发酵法生产PHB过程中存在的,发酵液难以分离沉淀,非有机溶剂提取PHB时分子量严重降低等问题,进行了发酵液的絮凝,及温度、pH、氧化剂对提取PHB影响的研究。并对粘度法测定PHB分子量的方法进行了研究,同时,对于研究过程中发现的,加热后PHB在三氯甲烷中的溶解性变化及其原因进行了探索。

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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。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。