非线性混合似变分不等式的扰动近似点-投影算法

In this paper we introduce a new perturbed proximal-projection algorithm for finding the common element of the set of fixed points of non-expansive mappings and the set of solutions of nonlinear mixed variational-like inequalities. The convergence criteria of the iterative sequences generated by the new iterative algorithm is also given. Our approach and results generalize many known results in this field.     

Inverse Coefficient Problems for Elliptic Hemivariational Inequalities

This paper is devoted to a class of inverse coefficient problems for nonlinear elliptic hemivariational inequalities. The unknown coefficient of elliptic hemivariational inequalities depends on the gradient of the solution and belongs to a set of admissible coefficients. It is shown that the nonlinear elliptic hemivariational inequalities are uniquely solvable for the given class of coefficients. The result of existence of quasisolutions of the inverse problems is obtained.     

SOLUTIONS FOR THE QUASILINEAR ELLIPTIC PROBLEMS INVOLVING CRITICAL HARDY-SOBOLEV EXPONENTS

In this article, we study the quasilinear elliptic problem involving critical Hardy Sobolev exponents and Hardy terms. By variational methods and analytic techniques, we obtain the existence of sign-changing solutions to the problem.     

HOMOCLINIC ORBITS FOR A CLASS OF THE SECOND ORDER HAMILTONIAN SYSTEMS

The existence of homoclinic orbits is obtained by the variational approach for a class of second order Hamiltonian systems q(t)+▽V(t,q(t))=0,where V(t,x)=-K(t,x)+W(t,x),K(t,x) is neither a quadratic form in x nor periodic in t and W(t,x) is superquadratic in x.     

二阶椭圆问题新的混合元格式

本文基于二阶椭圆问题一种新的混合变分形式,给出同时满足强椭圆性和B-B条件的任意次的求解格式.理论分析表明这些单元论证简单而且用了较少的自由度达到最优误差估计.同时我们还给出了它们在各向异性网格下的误差估计.     

棘胸蛙不同发育阶段肌肉差异蛋白的质谱分析

利用串联质谱对棘胸蛙的不同发育阶段个显著差异的肌肉蛋白质进行分析,根据质谱数据搜索蛋白数据库成功获得蛋白信息.构建了适应于质谱鉴定的棘胸蛙肌肉蛋白样处理方法,为进一步深入研究影响棘胸蛙发育的蛋白质奠定了基础.     

RP-HPLC法测定西洛多辛固体分散体中的西洛多辛

建立RP-HPLC法测定西洛多辛固体分散体含量。采用Inertsil ODS-3 C18(4.6mm×250mm,5μm)色谱柱,流动相为乙腈:磷酸盐缓冲液(调pH值为7.0)=50∶50(V/V),检测波长220nm,流速1.0mL/min,柱温30℃。结果表明在25—250μg/mL范围内,西洛多辛线性良好(n=6,r=0.9997),平均回收率104.46%,RSD为2.97%。本方法灵敏,快捷,结果准确,可用于西洛多辛固体分散体的含量测定。     

紫外分光光度法测定姜黄素固体分散体的含量

建立姜黄素固体分散体中姜黄素含量测定的方法.选取姜黄素特征吸收峰426nm波长处测定其含量.姜黄素浓度在1.02-5.10μg ·mL-1范围内线性关系良好,回归方程为A-0.1314C+0.0278,r=0.9998(n=3);平均回收率为99.48％,RSD=0.75％ (n=9).本方法准确、快速、简便,并具有很高的稳定性和良好的重现性,可为制备姜黄素固体分散体提供质量控制手段.     

风速测量实验的设计与探究

基于电磁理论和空气动力学的相关知识,利用磁铁、金属棒和DISLAB传感器等器件设计并制作了风速测量系统,可准确地测量2-11级范围内的风速值.该装置还可作为演示电磁感应现象的设计型实验内容,实验过程中可加深学生对电磁感应现象的理解,并提高学生对matlab软件的应用能力.     

梯度计算的集合变分方案及其在大气Ekman层湍流系数反演中的应用

大气Ekman层湍流系数的准确计算对数值天气预报和污染物扩散计算有着重要的意义. 将集合计算和变分法结合起来, 提出了目标泛函梯度计算的集合变分方案, 并根据正演模式的线性化情况提出了两种计算流程. 利用这种集合变分梯度算法及两种流程对Ekman层湍流系数进行了反演试验, 结果表明这种算法实施简单、方便, 根据观测资料能够比较准确地反演湍流系数值. 关键词： 梯度计算 集合变分 湍流系数 反演