(2+1)维耦合MKP型方程的分解及其显式解

利用(2+1)维耦合MKP型方程与它分解后的(1+1)维DNLS方程之间的关系,用达布变换的方法求出(1+1)维DNLS方程的显式解,进而得到(2+1)维耦合MKP型方程的显式解.     

聚丙烯酸与核酸相互作用的共振光散射光谱研究及其分析应用

研究了聚丙烯酸(PAA)与脱氧核糖核酸(DNA)相互作用的共振光散射(RLS)光谱.实验结果表明,在pH=2.0的B-R缓冲溶液中,PAA与DNA自身的共振光散射峰均较弱,但当二者发生静电作用形成复合物后,体系的共振光散射峰增强,散射增强程度则各不相同,其相对散射强度的顺序是fsDNA＞ctDNA＞yRNA.在一定范围...     

A novel hierarchy of differential integral equations and their generalized bi-Hamiltonian structures

With the aid of the zero-curvature equation, a novel integrable hierarchy of nonlinear evolution equations associated with a 3 x 3 matrix spectral problem is proposed. By using the trace identity, the bi-Hamiltonian structures of the hierarchy are established with two skew-symmetric operators. Based on two linear spectral problems, we obtain the infinite many conservation laws of the first member in the hierarchy.     

蔬菜中甲胺磷等5种有机磷农药残留量的分散液-液微萃取/气质联用技术检测

建立了分散液-液微萃取/气相色谱质谱(DLLME/GC-MS)联用技术分析蔬菜样品中甲胺磷、甲拌磷、甲基对硫磷、毒死蜱和乐果5种有机磷农药残留的新方法。优化后的萃取条件:10μL氯苯为萃取剂,1.0 mL丙酮为分散剂,萃取时间为3 m in。5种有机磷农药均具有良好的线性关系,相关系数不低于0.995,加标回收率为60%~95%,相对标准偏差为2.8%~9.1%,检出限为0.001~0.140 mg/kg。应用于蔬菜中有机磷农药残留的检测,结果满意。     

槲皮素键合纳米硅胶对牛血清蛋白吸附的研究

具有生理活性的蛋白质、核酸、酶等生物大分子在维持现代人类健康方面已必不可少,在医疗和食品等领域已逐渐得到更广泛的应用,这也对蛋白质、核酸、酶等生物大分子的分离纯化、分析测定的提出了新的要求.     

An extension of integrable equations related to AKNS and WKI spectral problems and their reductions

A novel hierarchy of integrable nonlinear evolution equations related to the combined Ablowitz–Kaup–Newell–Segur(AKNS) and Wadati–Konno–Ichikawa(WKI) spectral problems is proposed,from which the Lax pair for a corresponding negative flow and its infinite many conservation laws are obtained.Furthermore,a reduction of this hierarchy is discussed,by which a generalized sinh-Gordon equation is derived on the basis of its negative flow.