示波极谱法测定保健药品中的褪黑激素

褪黑激素与HNO3在室温下发生硝基化反应生成褪黑激素的硝基化合物,加NH3·H2O终止反应并用甲酸 甲酸钠缓冲液控制反应液pH3,在原点电位-0.20V(vs.SCE),测量-0.50V处的二阶导数峰高。方法检出限为1μg/L,线性范围为1μg/L～200μg/L,相对标准偏差为2.6%～8.0%,加标回收率为92 0%～110 0%,测定结果与高效液相色谱法进行比较,无显著性差异。     

浅谈高中物理单元结构“自学—质疑—讨论—小结”式教学

介绍以物理单元结构“自学—质疑—讨论—小结”式的教学模式的实施过程,并对其优越性及缺点都予以分析并提出改进方案。     

三基色计算全息图

介绍了三基色计算全息图的设计与制作，用白光光源照明该全息图，可以演示光的叠加，再现彩色图像并给出了理论分析和相应的实验结果。     

关于江西省宜春市第三小学始创“三算结合”教学法的调查报告

“三算结合”教学法，即口算、笔算、珠算三结合教学法，自上世纪五、六十年代创始以来，就以其独特的魅力，在小学数学教育上发挥了巨大作用，也为珠算教育增添了光辉，更为后来珠心算的诞生奠定了一定基础。据有关资料记载，“三算结合”教学法始创于江西省宜春市第三小学的教改实验。为了解其初创始末，去年11月上旬，我们在会长王世福同志的带领下，     

HI-13串列加速器上核结构在束γ谱学研究：现状及展望

主要介绍HI-13串列加速器的现状, 升级工程BRIF以及计划中的BRIFF-Ⅱ, 在束γ谱学研究的现状与将来核结构研究的展望.     

Single Qubit and Its Universal Logic Gate Made of a Heisenberg Spin Cluster with Five Particles

We investigate an anisotropic Heisenberg spin cluster with five particles controlled by a time-dependent magnetic field. With the algebraic dynamical method, we obtain the exact analytical solution to the time dependent Schr6dinger equation. Based on the analytical solution, it is shown that the system can be used as a universal single qubit logic gate controlled by the strength and frequency of the magnetic field, and the six special single qubit logic gates can be realized physically. We also discuss the anti-decoherence property of the qubit and its logic gates resulted from particle coupling effect and collectivity of the cluster.     

A New View on Fuzzy Hypermodules

We describe the relationship between the fuzzy sets and the algebraic hyperstructures. In fact, this paper is a continuation of the ideas presented by Davvaz in （Fuzzy Sets Syst., 117： 477- 484, 2001） and Bhakat and Das in （Fuzzy Sets Syst., 80： 359-368, 1996）. The concept of the quasicoincidence of a fuzzy interval value with an interval-valued fuzzy set is introduced and this is a natural generalization of the quasi-coincidence of a fuzzy point in fuzzy sets. By using this new idea, the concept of interval-valued （α,β）-fuzzy sub-hypermodules of a hypermodule is defined. This newly defined interval-valued （α,β）-fuzzy sub-hypermodule is a We shall study such fuzzy sub-hypermodules and sub-hypermodules of a hypermodule. generalization of the usual fuzzy sub-hypermodule. consider the implication-based interval-valued fuzzy