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The determination of Avogadro Constant many ways, using oil-drop experiment, electrolysis, X-ray diffraction of different options, the measured values are different, 602 × F1023 mole -1 is only an approximation.

实验测得其数值约为602×F1023。阿佛伽德罗常数的测定方法很多,采用油滴实验、电解法、X射线衍射等不同方案,测得的数值不尽相同,602×F1023摩尔-1只是近似值。

It was found that the experiment result was consistent with the outcome from the axiomatic design method in terms of the correctness rate of icon identification and the time spent for judgment.

实验发现在考虑图像辨认正确与答题时间下,实验结果与以公设计方法所得到的结果一致。

The oxidationresistant experiments were studied by refined flavones, such as reducing power, antioxidation actions to axunge, scavenging action to superoxide anion, scavenging action to hydroxyl free radical.

利用精制后的沙棘总黄酮进行了还原能力的测定、抗猪油氧化、清除超氧阴离子自由基和清除羟基自由基实验实验结果表明沙棘黄酮有良好的抗氧化能力。

The oxidationresistant experiments were studied by refined flavones, such as reducing power, antioxidation actions to axunge, scavenging action to superoxide anion, scavenging action to hydroxyl free radical. And the results showed total flavones of Hippophae had well oxidationresistant ability.

利用精制后的沙棘总黄酮进行了还原能力的测定、抗猪油氧化、清除超氧阴离子自由基和清除羟基自由基实验实验结果表明沙棘黄酮有良好的抗氧化能力。

The results showed that azeotrope didn′t appear and the thermodynamic consistency of the experimental data was examined by the Herrington area method.

分别采用Wilson方程和NRTL方程对实验数据进行了关联,计算结果与实验数据均较为吻合,其中NRTL模型的关联结果较好,乙酸异丙烯酯汽相摩尔分数的最大偏差为0.0036,平均偏差为0.0010。

Wastewater containing titanium pigment was treated by microfiltration membrane, Nanometer titanium can be purified and concentrated by use of microfiltration. Operational conditions were optimized and the model was built. Finally, the amount of wash water was reduced. Based on the above research, the whole set equipment was designed, which can meet the needs in a titanium industry with a capability of 500 ton per year. Backflush and automatic control were used in the equipment, which has been steadily run two years, has been widely adopted in titanium industry. The technology has been widely adopted in titanium industry.In the recent years, whole set equipment of ceramic membrane was increasingly used in the recovery of desired production from fermentation broth in China. A new membrane process integrated with pretreatment of flocculation or coagulation was exploited to recover Inosine. ZrO2 ceramic membrane was used in the work, and the average permeation flux could reach 150L/m2.h under pH value of 3, transmembrane pressure 0.1MPa, CFV 3m/s, and temperature higher than 70C. The recovery ratio of inosine is higher than traditional recovery method, although inosine degraded under acidic and high temperature condition.

实验表明,ZrO_2膜处理肌苷发酵液的合适条件为pH=3、操作压力为0.1MPa、膜面流速3m/s、温度大于70度,此时可以获得平均渗透通量150L/m~2h,但由于酸性条件、高温下肌苷降解,导致肌苷收率有所降低,但仍高于传统肌苷提取方法得到的收率;为进一步提高肌苷得率,缩短提取工序,实验研究了絮凝剂预处理发酵液,解决碱性条件下由于蛋白析出导致膜污染加重的问题,研究表明采用CaCl_2絮凝并调节pH=11,可以获得平均渗透通量为180L/m~2h,肌苷得率大于95%;比较了三种肌苷提取工艺得到的产品质量,采用预处理与陶瓷南京工业大学博士学位论文膜分离结合的除杂工艺得到的粗昔质量与陶瓷膜分离、离子交换及活性炭吸附工艺生产的粗普质量相当,均优于传统的提取工艺;设计了每小时处理12一巧吨肌普发酵液的陶瓷膜成套装置,采用部分内循环的方式降低设备的能耗,简化了肌昔提取方式,提高了产品的收率和得率,由于减少离子交换和活性炭吸附,使得工厂废水排放量降低30一40%,降低酸、碱用量,有利于环境保护。

Many influential factors of this method were analyzed. The experimental results indicated: the mole ratio of urea, sodium hypochiorite and sodium hydroxide was controlled within the range of (1.10~1.12):1:(2.30~2.42), the temperature of low temperature reaction must be controlled under 20℃, the high temperature should intensify fast to backset current temperature while reacting and the time for raising temperature only within 5min, and the yield of hydrazine hydrate can be reach about 75.1%.

实验分析了尿素法生产水合肼的各种影响因素,实验表明,尿素、次氯酸钠与氢氧化钠的摩尔比为(1.10~1.12):1:(2.30~2.42),低温反应温度控制在20℃以下,高温反应阶段快速升温至回流后反应5min左右时,水合肼收率可达75.1%左右。

This paper discusses the structure,principle and conditions of applying ballistic galvanometer and analyzes the errors.

采用新旧冲击电流计测定直螺线管的原理,对实验电路和实验方法的改

In this paper, the dynamic compressing experiments for the matrix material of the tungsten alloys which have been three different deforming(0%、 32.6%、 44.6%) processed have been performed by the experimental technology of separated Hopkinson pressure bar and many accurate datum have been obtained. Also the three materials have been compared with each other and analyzed. The results show that the optimized values are in a certain range to optimize the materials by changing their deforming technology. The parameters of constitutive model of Johnson-Cook have been fitted based on the datum. Then proceed to the next step, adiabatic shear band of these three matrix materials has been analyzed with finite element method. The result shows that the relations between stress and strain are different because of the differences of technical process of the three materials, but they are in great commonness in the material experiment and in great coherence in the distribution of time and space, which can been seen from the space distributing figures of plastic strain.

利用分离式Hopkinson压杆实验技术对三种不同变形量(0%、32.6%、44.6%)钨合金基体材料进行动态压缩实验,取得大量精确的数据,对比分析三种材料,结果表明通过改变变形量对材料进行优化,其变形量的优化值是有一定范围的;本论文拟合、确定了钨合金基体材料Johnson-Cook本构模型参数并对三种基体材料绝热剪切带进行有限元分析,结果表明三种材料由于工艺流程的不同,应力应变关系也不尽相同,但从塑性应变的空间分布图上体现了材料很大的共性和时间以及空间分布的一致性。

This thesis consists of two parts. The first one was that boundary value problem was discrete with five point difference method. Three kinds of memory formats were studied, which were full matrix, half band width and row compress sparse. Full matrix memory format and half band width memory format first was contrasted. The results show that half band width has efficiency in space. Then the algebraic system of finite element method was solved by Gauss-Seidel iteration method to popular row compress sparse memory format.

本论文由两部分组成,第1部分针对边值问题,用5点差分格式进行离散,并对离散矩阵这类大型稀疏矩阵,研究了系数矩阵的3种存储格式的优劣,即:满矩阵存储格式、半带宽存储格式和按行压缩稀疏存储格式,首先我们将满矩阵存储方式和半带宽存储格式进行了对比,迭代法的数值实验表明:利用半带宽存储的矩阵在空间运算方面具有高效性;然后针对目前数值实验中流行的按行压缩稀疏存储格式,实现了有限元离散代数系统的迭代法的求解。

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