Rare Decay Process K→πvv^- in Three-Site Higgsless Model]

Rare decay processes K→πvv^- and KL→π^0vv^- are considered in the framework of three-site Higgsless model. The contributions of this new physics model to these two decay processes come from the new heavy gauge bosons and the correction terms for the couplings of the ordinary gauge bosons with fermions. Our numerical results show that the branching ratios of these two decay processes can be enhanced by 40% and 50% relative to those predicted by the standard model.     

烟花中绽放北京奥运理念——绿色化学诠释新北京新奥运

介绍了中国烟花发生和发展的历史梗概,以及烟花中的化学知识和化学反应原理,阐述了北京奥运会和残奥会上烟花所体现出来的“科技奥运”、“绿色奥运”和“人文奥运”,诠释并展现了绿色化学的新视野。     

高中化学新课程的校本化实施

高中化学新课程的校本化实施是指在遵照高中化学课程标准前提下,学校根据自身性质、特点和条件,将国家层面上规划的高中化学课程转变为适合本校学生学习需要的实践过程。高中化学新课程的校本化实施的外部条件有:国家要完善高中化学课程标准的修订;地方政府和师范院校要加大对高中化学新课程校本化实施的扶持。其内部运作可以从教学目标的校本化、教学内容的校本化、教学方式的校本化、教学评价的校本化等方面入手。     

The lagrange-newton method for infinite-dimensional optimization problems

This paper investigates local convergence properties of the Lagrange-Newton method for optimization problems in reflexive Banach spaces. Sufficient conditions for quadratic convergence of optimal solutions and Lagrange multipliers are given. The results are applied to optimal control problems.     

Approximations of the nonlinear Volterra's population model by an efficient numerical method

In this paper, we apply the new homotopy perturbation method to solve the Volterra's model for population growth of a species in a closed system. This technique is extended to give solution for nonlinear integro‐differential equation in which the integral term represents the total metabolism accumulated fromtime zero. The approximate analytical procedure only depends on two components. The newhomotopy perturbationmethodwas applied to nonlinear integro‐differential equations directly and by converting the problem into nonlinear ordinary differential equation. We also compare this method with some other numerical results and show that the present approach is less computational and is applicable for solving nonlinear integro‐differential equations and ordinary differential equations as well. Copyright © 2011 John Wiley & Sons, Ltd.     

The number of simple modules of the Hecke algebras of type G(r,1,n)

This paper classifies the simple modules of the cyclotomic Hecke algebras of type G(r,1,n) and the affine Hecke algebras of type A in arbitrary characteristic. We do this by first showing that the simple modules of the cyclotomic Hecke algebras are indexed by the set of “Kleshchev multipartitions”. Received July 24, 1998; in final form February 8, 1999     

New flavanones from Scutellaria phyllostachya roots

The new natural flavanones (+)-5,2′-dihydroxy-6,6′,7-trimethoxyflavanone and (+)-5,2′-dihydroxy-6,6′,7,8-tetramethoxyflavanone in addition to the known flavones chrysin, norwogonin, and wogonin were isolated from Scutellaria phyllostachya roots. The structures of the isolated compounds were established using IR, UV and PMR spectra. __________ Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 24–25, January–February, 2008.     

光热偏转光谱技术研究薄层试样浓度的光热衰减特性

本文报道了以品红和结晶紫样品,研究了光热偏转信号随激发光束照射时间变化的规律,同时探讨了这一方法新应用的可能性。     

Lepton Flavor Violating Z→lIlJ in SO(3) Gauge Extension of SM

The SO(3) gauge extension of SM, which is proposed to present a successfulexplanation for the observed small masses of neutrino and the nearly tri-bimaximal neutrino mixing, predicted the vector-like SO(3) triplet Majorana neutrinos and SU_L(2) double Higgs bosons. In this work we calculate branching ratios of the charged lepton flavor violating decays l_Il_JV (V=γ,Z) induced by these Majorana neutrinos and Higgs bosons. We find that under the model parameters constrained by experimental bounds on the decays Z→l_Il_J, the branching ratio of decays l_I→l_Jγ can be up to 10^-10, which may be accessible at the future experiments.     

Controlled calibration method for laser induced breakdown spectroscopy

Laser induced breakdown spectroscopy (LIBS) is a potential technique for rapid analysis of samples present in solids, gases and liquids. In the last two decades it was an object of extensive studies. Controlled calibration method used to analysis the LIBS spectra is investigated. Compared with the inner calibration and calibration-free (CF) methods, this new method overcomes "matrix effect", and demonstrates a better ability to cope with the spectra. It is used to analyze natural soil, and errors of the concentration are decreased about 5%. The result shows that the new method is feasible and accurate.