成核

The developmental focuses and commercial achievments in Chinese plastics industry in 2004 were introduced,including nano-composites,sun cell , UHMW polyethylene,nucleator,plasma treatment,polyvinyl alcohol reinforced thermoplast et al.

介绍了2004年中国塑料产业的研发热点及产业化成果，包括纳米复合材料、太阳能电池、超高分子量聚乙烯、成核剂、等离子处理、聚乙烯醇膜等。

In small batch bulk PP/ nucleator/CaCO3 system, when the blend ratio of the small batch bulk PP/ nucleator/CaCO3 composite is 1000/3/40, the two particles have the best comprehensive mechanical modification effect, the impact strength increases 3 times.

二者的协同作用使其韧性有明显的提高。总之，采用两类改性方法相结合，当p成核剂含量为0.3%、纳米CaCO。含量为4%时体系具有较好的韧性，其冲击强度相比纯小本体即提高3倍。

The model of programmed crystallization of SPM was proposed based on the moment transformation of the population considering the agglomeration. The optimal temperature-time curves in a batch crystallizer which maximized the terminal mean size and mean weight size can be determined from the application of the Pontryagin Maximum Principle. The calculated crystallization results heating under optimal temperature were compared with ones under linear or natural heating temperature.

根据第四章所得到的螺旋霉素晶体二次成核和晶体生长和布朗扩散引起的聚集动力学，利用第六章所描述的晶体尺寸分布的各阶矩对时间的一阶导数所构成的自封闭的一阶常微分方程组，采用庞得里亚金极大值原理，以温度为控制变量，在满足某些约束条件下，以最大平均尺寸和最大晶体重量平均尺寸为性能指标，计算出了螺旋霉素间歇结晶的最优温度—时间曲线，并同线性加热和自然方式进行了比较。

The effects of these properties on boiling inception of propanol/water and SDS/water mixtures were studied in this work.

由於固体面上的沸腾起始乃是不均相的成核现象，因此固/液/气三相界面性质的影响至钜。

In this study, the glasses were prepared from reagent-gade chemicals Mg2, CaCO3, BaCO3 ,Al2O3, and 9wt% ZrO2 which acts as nucleating agent, by quenching method. The glass-ceramics, which are transmitting in the middle IR region and have improved mechanical strength, were made from the parent glass via suitable crystallization heat-treatment.

本研究是以Mg2、CaCO3、 BaCO3 及Al2O3，为主要的成分，再添加9wt ﹪ZrO2作为成核剂，用高温淬冷的方式制备出玻璃，再施以结晶热处理，希望制出结晶化且具有透中红外光的玻璃陶瓷，以提高机械强度。

The grain shape of Co change to equaxial fine grain and refined by adding of Al2O3 powder.

SEM的表面型态中，未添加Al2O3皆发现等轴状细晶，在添加Al2O3后，成核点数目变多，晶粒会随著添加量增加而减小。

The main contents of the thesis are summarized as followed:(1) The nucleation and growth mechanism of 3-D flowerlike ZnO crystals in ZnCl2-NaOH system was investigated through monitoring the crystal structure, morphology, and Zn concentration in reaction solution and at regular intervals.

本论文的主要内容包括：(1)三维花状ZnO微晶的生长机理研究以ZnCl2-NaOH为体系，通过跟踪反应过程中不同时间溶液中Zn浓度以及产物的物相和形貌，揭示了3-D花状ZnO晶体在液相反应中的成核、生长机理。

The simulation results showed that the neural network model given in this paper is capable of forecasting the behavior of nucleation rate exactly and rapidly, and the maximum relative error does not exceed 5.9% as compared with measured values.

仿真结果表明，利用文中所提出的神经网络模型能够较准确、快速地预测结晶成核速率的变化，预测值与测量值的最大相对误差不超过5.9%，表明该网络预测模型有很大的实用性。

Through the investigation for the effect of the experimental parameters, such as the electrodeposition time, the voltage and the concentration of sodium dodecyl sulfate, on the shapes of dendrite-like copper crystals, the formation process was studied and it went through the nucleation, growth and revegetation process

通过研究各实验参数，如电沉积时间、电位和十二烷基硫酸钠的浓度对枝状晶体形貌的影响，发现枝晶铜的生长过程经历了成核－生长－再生长的过程。

The isothermal DSC analysis showed that the Ruleless Coring Mechanism, Diffusion Mechanism and Phase Interface Mechanism would control the reaction of isocyanate and cellulose with different MC. The key effects of complicated mechanism rest with water transference and fast reaction of isocyanate and water.

等温DSC 研究揭示含水纤维素与异氰酸酯反应时，存在无规成核机理、扩散机理和相界面机理等多种情形，水分迁移作用和异氰酸酯与水反应速率较快是致使异氰酸酯与含水纤维素的反应机理复杂的关键。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。