稳定性

In thepresent thesis we concentrate on some special properties of C-regularizedsemigroups,such as stability,contractivity,almost periodicity,asymptotic almostperiodicity,ergodicity and norm continuity.

本文对C-正则半群的一些特殊的定性性质如稳定性，压缩性，概周期性，渐近概周期性，遍历性和范数连续性等做了深入的研究。

Heating promoted a remarkable decrease in aloin and protein contents depending on temperature and time, higher temperature and longer heating time, more loss.

两种芦荟汁中芦荟苷和蛋白质对热都不稳定，温度越高，稳定性越差。

Among them Aloe vera and Aloe arborescens, more appropriate for industrial production, were selected for further investiment on the contents of active components in relation to leaf position and leaf part, isolation and purification of gel and skin polysaccharides, thermal stabilities of active components including polysaccharides, aloin and protein.

在此基础上，对库拉索芦荟和木立芦荟中的活性成份与叶片生长位置的关系，芦荟皮多糖和凝胶多糖的分离提纯，芦荟活性成份的热稳定性等方面进行了深入的比较研究。

There are 8.6%~10.91% foreign matter in the sphenes, in which radioactive elements of strontium, cesium and uranium range from 4.26% to 4.58%. The change of structural cell parameters of sphenes is still very little,Δa=-0.0009 nm~0.0041 nm,Δb=0.0018 nm~0.0004 nm,Δc=0.0002 nm~0.0048 nm,Δβ=-0.10°~0.09° with high crystallinity of 99.27%~96.46%. Though, the age of sphene from the Fenghuang Mountain is about 1000 Ma, and experienced 775 Ma~1758 Ma geological evolvement and alpha decay, its crystallinity only decreased 3%, and its crystal shape and structure are still fine, indicating that sphene is of good ability to solidify radioactive elements. Therefore, sphenes are ideal minerals for solidifying nucleus waste.

通过对北祁连牛心山变质杂岩体中榍石(775Ma)和山西凤凰山花岗岩中榍石(1758Ma)的XRD及EDS等测试与研究，结果表明：两地榍石的杂质元素质量分数高达8.6%~10.91%，放射性核素锶、铯和铀的质量分数达4.26%~4.58%；晶胞参数的变化极小，△a=-0.0009nm~0.0041nm、△b=0.0018nm~0.0004nm、△c=0.0002nm~-0.0048nm、△β=-0.10°~0.09°，结晶度仍高达99.27%~96.46%，榍石经过10×10^8a的地质作用，结晶度仅减少了3%，显示榍石固化放射性系列核素的能力较强，虽经历了约775Ma~1758Ma的复杂地质演化及其所含放射性核素的衰变作用，其晶体结构完好，稳定性极高，是值得期待的理想核废物固化矿物。

It constructs system around dealing with " course" of function , and the change of user s needs is for the function mostly. So the software use this technological development is poor in stability, alterability and getting reusable.

它是围绕实现处理功能的"过程"来构造系统，而用户需求的变化大部分是针对功能的，因此，用这种技术开发出来的软件，其稳定性、可修改性和可重用性都比较差。

Numerical model, which using the Alternating Direction Implicit method, is applied to simulate the current field and temperature field in this area.

DI数学模型是一种半隐半显的计算格式，它既具有显式格式易求解的优点，也具有隐式格式良好的稳定性。

Based on the second- and fourth-order compact difference formulas for second-order derivatives and the idea of weighted average, two classes of the alternating direction implicit method are proposed for solving two-dimensional wave equation. The methods are of accuracy O (T^2+h^4) and O (T^4+h^4) respectively. Stability conditions are obtained by Fourier analysis method.

基于二阶微商的四阶紧致差商逼近公式及加权平均思想，提出了数值求解二维波动方程的2种精度分别为O(т^2+h^4)和O(т^4+h^4)的交替方向隐式格式，以及与其相匹配的第一个时间层的同阶离散格式，并且通过Foulier方法分析了格式的稳定性。

An extended hyperbolic mild-slope equation, which can take such terms as wind input, bottom friction and nonlinearity of wave into account, here has been deduced into a parabolic one in the form of a series of governing equations described with complex amplitude. It became a complete wave model when integrated with corresponding physical and imaginary boundaries, and can be solved through the improved Crank-Nicholson or the well known Alternating Direction Implicit difference method, both of which can accelerate the convergent speed , expand limitation of the mathematical method and improve the quality of the solution.

本文基于综合考虑底摩阻、风能输入及非线性影响的推广双曲型缓坡方程，将其进行转换，产生一个演变方程，其复振幅控制方程为抛物线性，并采用ADI差分格式、改进的Crank-Nicholson格式及相应的物理和虚拟边界条件进行求解，以提高数值模拟的适用性、数值计算的稳定性、收敛速度及精度。

Objective To study and compare photic stabilities among extracted black rice, amaranth and grape pigment from natural products.

摘要目的从天然产物中提取黑米、苋菜红、葡萄红这三种花青素类色素，并比较它们的光稳定性。

It has been shown that penicillin amidase was very susceptible to the change of temperature, extremely apt to deactivate in the buffer; while the thermostability of enzyme could be improved by an average of 2～4 times in the reversed micelles.

结果表明，青霉素酰化酶对温度非常敏感，在水溶液中极易失活，而经反胶团包埋后，其热稳定性有很大程度的提高，热失活明显减少。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。