查询词典 asymptotic stability

First introduction whole wave commutate electric circuit ofwork principle, immediately after introduction the electriccapacity filter the function characteristics of an electriccircuit, and in the electric circuit adoption exaltation stability,exaltation temperature stability and limit flow a type over flowprotection electric circuit of concrete measure with insure anelectric circuit safety stability of work.

首先介绍了全波整流电路的工作原理，接着介绍了电容滤波电路的性能特点，然后引入了具有放大环节和辅助电源的串联可调式稳压电源，并在电路中采用了提高稳定度，提高温度稳定性及限流型过流保护电路的具体措施，以确保电路安全稳定的工作。

The author suppose, the anisotropically undrained shear strength is applied for the first time in the analysis of resistant heave stability for deep braced excavations in the world, the safety factors of two kinds of stability failure are gained, the first kind of factor is stability against sliding, the second is losing the ultimate bearing capacity.

在国内外首次将各向异性不排水剪强度应用到深基坑抗隆起稳定分析中，推导抗滑稳定破坏（包括浅桩支护及刚性支护）和丧失极限承载力破坏两种情况下的稳定安全系数公式，对典型上海软土的模型参数进行计算分析，并对各参数对安全系数的影响进行讨论，最后以三个工程实例加以验证。

According to the basic principles of neural networks and in combination with 35 examples of actual landslide projects, this paper establishes RBF and BP neural network models respectively. The comparative results of the two models show that RBF neural network model has higher accuracy and fewer errors and is more suitable for the stability evaluation of landslide. Therefore, this model is used to calculate the stability coefficients of Yellow Caoba ancient landslide and predict the stability of the landslide.

根据神经网络的基本原理，结合35个实际滑坡工程实例，分别采用RBF神经网络和BP神经网络建立滑坡稳定性评价模型，利用MATLAB编程求解，并对比了两种模型的计算结果，表明采用RBF网络模型计算出的结果精度高、误差小，更适合于对滑坡的稳定性评价；同时，运用RBF网络模型计算了黄草坝古滑坡的稳定性系数，对其稳定性进行了预测，以验证该方法的有效性。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

The extraction and stability of the pigments in Tussilago farfara L. were studied. The experimental results showed that the pigments could be solved in acetone. The stability of the pigments is good when pH is within 3~9; the oxidizing agents, reducing agents and common food additives have little influence on its stability; it is react too much with Fe(superscript 3+) ion, and Na(superscript +) ion showed a certain increment effect on the color; the heat performance of the pigments is good when under 60℃.

研究了款冬花色素的热稳定性、氧化还原稳定性和pH值稳定性，并对常用的几种食品添加剂对款冬花色素的稳定性进行了探讨，结果表明：款冬花色素易溶于丙酮，属于脂溶性色素；在pH＝3～9时，款冬花色素的稳定性较好；氧化还原剂及食品添加剂对其稳定性影响不大，Fe(上标 3+)金属离子对其影响显著，Na有增色作用；水浴温度在60℃以下色素的热稳定性较好。

The pigment of Berberis heteropoda Schrenk is a type of anchocyanin and it is strong in resistance against light and to some extent, good in enduring heat and low consistence oxide. But it is poor in resistance against reductant and preservative. It can be applied to the condition of PH. It is also found that sucrose and most of metal ions do not exert negative effects on the stability of the pigment, except Fe3+, Fe2+and low consistence Pb2+, which have some extent effects. Adding stability matter can improve its stability. The harm trace elements contains are within requirement of the National Standard on food safety, As the lexicological study indicates that the pigment does not have any toxicity and mutagenesis, it can be used as edible pigment.

结果表明：大孔树脂吸附-解吸附法纯化黑果小檗色素实验室工艺简单易行，色素回收率高；黑果小檗色素属于花色苷类色素；耐光性好；对热有一定耐受性；对低浓度氧化剂有一定耐受性；耐还原性差；对防腐剂耐性差；适用PH＜6条件下使用；蔗糖和大多数金属离子对色素无不良影响，但Fe~(3+)、Fe~(2+)、Sn~(2+)和低浓度pb~(2+)对色素有影响，加入稳定剂后，可提高色素的耐热性、耐氧化性、耐防腐剂能力；经对有害微量元素进行检测和毒理试验表明，该色素安全无毒，可以作为天然食用色素使用。

At last, ILIF in segment L3-4 and L4-5 is feasible. 2. There are enough operation space for ILIF in L3-4 and L4-5 with the root being retracted gently. And it is feasible to insert a couple transpedicle screws homolaterally. The intertransverse area was too narrow to perform ILIF on L5-S1.3. ILIF provide greater biomechanical stability than TLIF. while there was no significantly different stability between ILIF with homolateral or bilateral pedicle screw fixation. Adequate postoperative stability can be achieved by intertransverse lumbar interbody fusion with homolateral pedicle screw fixation.4. ILIF with transpedicle screws fixation homolaterally was a safe, convenient and effective operation, and less intraspinal complications were occurred of ILIF than TLIF.5. The fusion condition was satisfaction in ILIF group, which was better than TLIF group.

横突间入路腰椎椎体间融合术在L3-4、L4-5节段具有可行性。2、在L3-4、L4-5节段可提供足够的空间行ILIF手术，并可通过同一切口附加椎弓根钉固定，操作安全、简便。L5-S1节段横突间区域较小，操作困难，不适合行ILIF手术。3、ILIF手术术后生物力学稳定性有所下降但优于TLIF手术；ILIF附加同侧椎弓根钉固定与附加双侧椎弓根钉固定生物力学稳定性相当，使用ILIF术式附加侧同椎弓根螺钉固定，可提供较好的即刻稳定性。4、ILIF手术及附加同侧椎弓根钉固定是一种安全、简便、有效的手术方式，在减少椎管内并发症方面具有优势。5、ILIF手术可获得较好的融合率，其融合情况从组织学观察稍好于TLIF手术。

The results indicated that the thermo-stability of the polymers derived from BOEMA was not as good as those derived from TBMA, and the more content of MAA in the compolymers resulted in lower stability. Terpolymer from BOEMA, MAA and St had higher thermo-stability than those from BOEMA, MAA and isobornyl methacrylate or methyl methacrylate.

当树脂中MAA含量较低时，BOEMA与St的共聚物和BOEMA与IBOMA或MMA的共聚树脂相比，表现出更好的热稳定性，分解温度有明显差异(相差30度以上)；另外，湿度对BOEMA的聚合物的稳定性也有很大影响，湿度越高，树脂分解越快。

The problems of robust stability and robust stabilization for interval systems were discussed. A necessary and sufficient condition for the robust stability of a line segment polynomial was proposed. The tested results of robust stability of a polynomial polytope and robust stabilization of an interval system were obtained in terms of the condition.

讨论了区间系统的鲁棒稳定性和鲁棒镇定性的有限检验问题，给出了线段多项式鲁棒稳定性的充分必要条件，利用该条件对多项式多面体鲁棒稳定性和区间系统鲁棒镇定性进行了有限检验，并给出了相应的检验结果。

On the basis of the past research, the aims of this study include:(1) To establish the module of emotion induced by cognitive task;(2) To set up the assessment system of criterion of emotional stability;(3) To study on the effect of emotional stability to cognitive task performance;(4) To investigate the influence of situational variable on psychophysiological research of emotion;(5) To discuss the physiological differences between different emotional stability individuals under different situations.

在以往研究的基础上，本工作的主要目的如下：（1）建立情绪诱导认知作业模式；（2）建立情绪稳定性效标评价体系；（3）探讨情绪稳定性对认知作业绩效的影响；（4）研究情境变量对情绪生理心理学研究的影响；（5）探讨不同情绪稳定性个体在不同情境下的生理反应差异。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。