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On condition that the nonlinear uncertain function is bounded, based on state observer and controller, we derive a sufficient condition for robust stability independent of delay by the Lyapunov functional theory.

在非线性不确定性满足有界条件下,通过构造增广系统,利用Lyapunov稳定性理论,给出了该不确定性系统基于观测器的鲁棒镇定的充分条件,并给出了相应的状态观测器和鲁棒控制器。

Although the application was developed in a field where conditions justified a bullhead squeeze down the existing completion tubing, well conditions in other fields may warrant the use of concentric or coil tubing to circulate the slurry to the perforations and then to squeeze the slurry into the zone.

虽然应用开发的一个领域条件有道理缘挤压下来完成现有油管,条件好,在其他领域可能需要使用同心圆线圈或油管分发泥浆向齿孔,然后挤压成浆区。

Under 20℃, content of soluble protein and soluble sugar in Cabbage first rises then falls; the content of soluble protein in Cardamine violifolia rises with Selenium, and enhanced the content of soluble sugar. The result indicaded that effect of seleuinm on metabolism varied with different kinds and conditions.

在20℃的条件下,低质量分数的硒使白菜体内的可溶性蛋白、可溶性糖的含量表现出先升后降的趋势;使堇叶碎米荠体内可溶性蛋白的含量随硒的质量分数的不断升高而增加,对可溶性糖含量有促进作用,结果表明硒对植株的代谢影响因种类、条件的不同而不同。

A conclusion can be drawn that tryptopanase expressed only by constructed plasmid during "catabolite repression".

在葡萄糖存在的条件下由于分解代谢产物阻遏,基因组上的色氨酸酶基因不表达,加入IPTG只表达质粒上的基因,如果在合适条件下测得色氨酸酶活性,则可以证明质粒上的基因能表达出有活性的色氨酸酶。

A sensitive spectrophotometric method for the determination of trace amounts of chlorine dioxide based on the fading reaction of chlorophenol red by chlorine dioxide has been developed in the alkaline solution.

在弱碱性条件下,二氧化氯(ClO2 )氧化氯酚红使其褪色,于 5 75nm波长处测定剩余氯酚红的吸光度,当用试剂空白参比时,吸光度的降低值与ClO2 的浓度呈直线关系,其它氧化剂在测定条件下无干扰,方法有较高的灵敏度和很好的选择性。

We have studied a model of a non-Newtonian viscous compressible fluid in 3D bounded domains, in which the viscous part of the stress tensor satisfies the coerciveness condition and the values of the growth condition ., are positive constants. Here is the tensor of the velocity gradient, is the strain tensor and ,which depends on the tensor of the velocity gradient, is the hefts of .

对满足强制性条件,以及增长性条件的非牛顿粘性可压缩流体在三维有界区域中的流动进行了研究,其中和为正常数,为速度梯度张量,是偏应力张量,为的分量,它依赖于速度梯度张量。

We establish some connections between geometric properties, properties in analysis and analytic properties of the inducing map ψ and operatortheoretic properties of composition operator C〓: f〓fοψ on various analytic function spaces mentioned above, include the boundedness, compactness, weak compactness, collective compactness and the Schatten class operator ideal, etc. Our results extend some previous results, for instance, the Shapiro's Nevanlinna counting function condition and the MacCluer's Carleson measure condition for the compactness of C〓 on Hardy space.

本文建立了D上解析自映射φ:D→D的几何性质、分析性质和解析性质与复合算子C〓:f→foφ在上述各种解析函数空间上的限制的算子性质之间的联系,涉及到复合算子C〓的有界性、紧性、弱紧性、总体紧性及Schatten类算子理想等算子特征,推广了前人的一系列结果,如Shapiro关于C〓的紧性的Nevanlinna计数函数条件,MacCluer关于C〓的紧性的Carleson测度条件等。

The results showed that the best substrate of weight ratio of bran was that grain pieces∶ cornmeal was 2∶1∶1.Most quantities of sporulation and antifungal compound on spore germination of Verticillium dahliae were analyzed.Accumulation of antifungal compound was in direct proportion to the quantities of sporulation in the solid fermentation conditions.The solid ferment...

结果初筛出最佳固体发酵基质配方为麸皮:豆粕:玉米粉比为2:1:1;发酵温度、料水比、pH值、接种量等对菌株产芽孢及其抗菌物质的分泌有明显影响;在固体发酵条件下,芽孢的产生数量与抑菌物质的积累呈正比,以温度为35℃,料水比为1:1.4,pH值为7.0,接种量为10%为菌株最佳发酵条件。

In recent years China economy fast growth, but various local development situation is different. Because the geographical environment and the humanities condition differently creates the city and countryside disparity. Various local growth speedy is different. This empirical study, using the regional data of 204 cities in China between 1996 and 2001, discusses whether exists conditional convergence in China.

摘要 近年来中国大陆在经济上的成就是有目共赌,但境内各地区发展情况却不一致,因地理环境、人文条件不同造成城乡差距,各地区的成长速度不同,本研究以1996年~2001年中国大陆204个地级城市的经济成长率及影响经济成长率之变数资料为基础,探讨中国大陆各城市间是否存在条件收敛。

But, because of the complexity of the dye molecule, there has been short of detailed comprehension in its photocatalytic degradation process. The key problem is difficult to detect the intermediates clearly. In this paper, the photocatalytic degradation of azo dye Congo red in water solution was investigated on UV irradiating TiO2 in the homemade reactor. The optimization conditions were determined and then the rate of decolorization, COD decrease, yield of CO2 and varies pH of aqueous solution during illumination were detected; The varies of the possible intermediates during degradation process were monitored with UV-VIS spectrum and HPLC. The possible mechanism of Congo red photocatalytic degradation is discussed combined with the data of MS.

本文选择有代表性的常见偶氮染料—刚果红作为研究对象,以自制TiO2为催化剂和小功率紫外灯为光源,在自制光反应器上确定了光催化降解的优化条件,并在这个优化条件下测定了降解过程中的脱色率、COD去除率和CO2生成量;利用数显酸度计、紫外可见分光光度计和高效液相色谱仪跟踪测定了降解过程中的可能产物,并结合质谱的数据初步探讨了刚果红的可能降解机制。

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The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为:以确有疗效的中药复方为研究对象,以现代科学技术和传统中医药理论为技术支持,以该复方所治病证的药效响应为评价标准,以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。

I don't… don't know. He's unconscious.

我不……我不知道他休克了。