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用气相色谱的分析方法研究了理想非线性单组分不同温度下的流出曲线,用"特征点"法回归出了各组分的物理常数G和b,代入理论模型公式,并与实验结果进行子比较。 相似文献
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A scanning electron microscope observation is carried out on Glycine soja L., which grows around the estuary of the Yellow River, in Kenli County, Shandong Province. It is first discovered that there are salt glands, in the shape of balls, on the surface of the stems and leaves of G. soja L., and distributed at the intercellular layer. With a handle at the base, the salt glands are not equal in size, and show a layer-upon-layer structure. They have a diameter of 21.6 μm, a handle length of 1.2 μm, their secretory pore's diameter is 5.6 μm. There are two ways to secrete salt ions: younger glands secrete salt ions through the secretory pore, and mature glands by breaking themselves. 相似文献
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通过加入适当的填加剂,采用Chiralcel-OJ柱拆分了福莫特罗并结合手性固定相(CSP)的特点,分析和讨论了流动相的组成对拆分度的影响 相似文献
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Intersection computation of convex sets is a typical problem in distributed optimization. In this paper, the algorithm implementation is investigated for distributed convex intersection computation problems. In a multi-agent network, each agent is associated with a convex set. The objective is for all the agents to achieve an agreement within the intersection of the associated convex sets. A distributed"projected consensus algorithm" is employed, and the computation of the projection term is converted to a constrained optimization problem. The solution of the optimization problem is determined by Karush-Kuhn-Tucker(KKT) conditions. Some implementable algorithms based on the simplex method are introduced to solve the optimization problem. Two numerical examples are given to illustrate the effectiveness of the algorithms. 相似文献
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This paper studies the stabilizing problem of networked sampled-data linear systems with independent and identically distribution(i.i.d.) packet dropouts. First of all, for the sampled-data system without packet losses, the necessary and sufficient conditions for the critical sampling intervals are given to ensure the mean square stability where zero order holder and generalized holder are adopted, respectively. Secondly, for the sampled-data system with i.i.d. packet losses, necessary and suffi... 相似文献
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用X-射线小角散射方法测得了色谱填料的分形特征。讨论了使用普通衍射仪进行小角散射的可能性。 相似文献
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本文研究了1-苯基-3-甲基-4-(α-呋喃甲酰基)-5-吡唑酮(HA)单独萃取Y(Ⅲ)及其与二苯亚砜(DPSO),磷酸三丁酯(TBP)或三辛基氧膦(TOPO)协同萃取Y(Ⅲ)的行为。确定了萃合物的组成分别为YA_3,YA_3·DPSO,YA_3·TBP和YA_2(NO_3)·2TOPO.算得萃取平衡常数分别为:logK_(A(HA))=-6.86,1ogK_(AB(HA+DPSO))=-3.89,logK_(AB(HA+TBP))=-2.53和logK_(AB(HA+TOPO))=5.13. 相似文献
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通过实验,分析和讨论了东北红豆杉树叶中紫杉醇的提取过程,采用无毒、无污染的乙醇作为提取溶剂,在高分子树脂柱和Zorbax-SW柱上进行了逐级提纯,得到了较高纯度的产品,测定了洗脱过程中紫杉烷类化合物的浓度分布情况,为进行规模化生产提供了合理的工艺路线 相似文献