1.dispersion of activation time (ATd)? dispersion of repolarization t ime(RTd)and dispersion of APD50(APDd1)and APD90(APDd2).
激动时间(activationtime,AT)、复极时间(repolarizationtime,RT)和AT、APD50、APD90、复极时间(RT)的离散度(dispersion),即ATd、APDd1、APDd2、RTd。
2.SAS process includes different processes. In this paper, precipitation by acompressed antisolvent (PCA) process and solution enhanced dispersion bysupercritical fluids (SEDS) are studied. In four models with different nozzle structure,the influences of solvent flux, density of carbon dioxide, size of nozzle and thelength-to-diameter ratio on the hydrodynamics properties of SAS process are studiedby means of the turbulent intensity and volume faction distribution of solvent.
SAS方法的实施有多种不同的过程安排和装置,本文对抗溶剂压缩沉淀过程(Precipitation by a Compressed Antisolvent, PCA)和超临界流体提高溶液分散过程(Solution Enhanced Dispersion by Supercritical Fluids, SEDS)进行了研究,并根据喷嘴结构的不同建立了四个不同的模型,通过湍流强度和溶剂分布研究了溶液流量、二氧化碳密度、喷嘴内径尺寸和微粒化设备长径比对SAS过程流体力学特性的影响。
3.Analyses of the Properties of Tunable Faraday Anomalous Dispersion Optical Filter at 589nm
Analyses of the Properties of Tunable Faraday Anomalous Dispersion Optical Filter at 589nm
4.Abstract: A continuity wave model is put forward for the dispersion processof liquid-liquid two-phase system,by coupling mass and momentum conservation equations of two-fluid model.The conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model.The phenomena of catastrophic inversion and transitional inversion are explained.The effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model.According to the theory herein,emulsion inversion is the regime transition of liquid-liquid system due to the instablity of a dispersion process.The effect of drop size distribution on the maximum volume concentration of a liquid-liquid emulsion only occurs in a certain range of Weber numbers.
文摘:以双流体模型为基础，通过质量守恒方程和动量守恒方程的耦合，提出了液-液两相系中弥散传质的连续波模型.由该模型得到弥散传质过程阻塞和弥散传质过程弱不稳定性产生的条件，计算了液滴尺寸及其分布对乳化液极大堆砌分数的影响，解释了剧变型乳化逆变和渐变型乳化逆变现象.研究结果表明，乳化逆变是由于弥散传质过程的不稳定性而引起的悬浮体型态的改变，随液滴尺寸多分散性的增大，极大堆砌分数增大；随液滴平均尺寸的增大，多分散性对极大堆砌分数的影响减弱；当韦伯数足够大时，液滴尺寸及其分布对乳化液极大堆砌分数无影响.
5.Abstract: Analyzes the performance of unipolar OCDMA system using optical orthogonal code (OOC) considering the dispersion and nonlinearity effect of the transmission medium.Theoretical analysis demonstrates that dispersion and nonlinearity effect deteriorate the system performance.The performance of OCDMA system assuming dispersion-shifted fiber as transmission medium is very close to the case neglecting the dispersion and nonlinearity effect.Assuming RZ initial pulse and optical hard limiter are also possible solutions.
文摘:分析了基于光正交码(OOC)的光码分多址系统的性能.数值结果表明：与以前忽略光纤信道对系统性能的情况相比，在考虑了光纤的色散和非线性效应以后，系统性能有了明显的下降.给出了一些建议方案来遏制由色散和非线性效应引起的系统性能恶化.
6.The dispersion of modified CeO_2 nanoparticles in cyclohexane was measured in order to evaluate the dispersion of them in PP melt. The dispersion of CeO_2 nanoparticles in composites was observed with SEM.
选择每种偶联剂处理过的氧化铈在环己烷体系中分散效果最好的样品与聚丙烯切片共混,通过扫描电镜观察共混物断面纳米CeO_2的分散情况。
7.The mean particle diameter of toner produced by means of dispersion polymerization is smaller than that of the toner produced by means of suspension polymerization. However, toner produced by means of dispersion polymerization has a wide distribution of particle diameter, and is mingled with resin micro-balls which may restrict the application of dispersion polymerization to produce the toner.
分散聚合法制得的墨粉比用悬浮聚合法制得的墨粉平均粒径更小，但墨粉的粒径分布较宽且存在树脂微球，这限制了分散聚合法制备墨粉的应用；
8.Abstract: The hot wire anemometer and the ensemble average method are used to measure and study the dispersion turbulent transient feature in a closed cylindrical explosion bomb.The comparison of the dispersion turbulent parameters from different shapes of closed explosion bombs is presented.The relation between errors and numbers in dispersion turbulent measurement with the ensemble average metod is discussed.
文摘:采用热线风速仪和系综平均法测定和研究了封闭圆柱形粉尘爆炸罐内扬尘湍流的瞬态特性，并与球形爆炸容器内已测定的扬尘湍流瞬态特性进行了比较，对系综平均法用于扬尘湍流的测量误差与测量次数的关系进行了探讨。
9.Large gap exists between Biot’s theoretical dispersion and total disp ersion when the hydrostatic pressure is low, Biot’s theoretical dispersion can not explain the real dispersion in experiments very well.
在低压情况下 ,实验总频散与Biot理论频散差异较大 ,Biot理论频散不足以解释实际频散结果 ;
10.The analytical solutions of the gain,dispersion and population difference in the steady state of an open ladder lasing without inversion(LWI) system are at first given when the phase fluctuation of the driving field is considered.Then the effects of the driving field phase fluctuation on the gain,dispersion and population difference are analyzed by the numerical results from the analytical solutions.Our research shows that the phase fluctuation of the driving field will results in a finite line width;with the line width increasing,the gain decreases monotonously,however,variation of the dispersion isn?t monotonous,it has a maximum value when the line width takes some value;the line width varying can?t lead to change lasing from without to with population inversion.
给出了有驱动场位相涨落的开放的梯型无粒子数反转激光(LWI)系统增益、色散和布居数差的定态解析解,进而用得到的数值计算结果分析了驱动场位相涨落对增益、色散和布居数差的影响.研究结果表明,驱动场位相涨落将导致有限线宽;随着线宽的增加,系统增益单调地减小,但系统色散的变化并不是单调的,当线宽取某个值时,色散有极大值;线宽的变化不能导致无反转激光向反转激光的转变.
