用力敏传感器测液体表面张力系数的误差分析

分析了采用力敏传感器测量液体表面张力系数实验误差的主要来源，给出了计算公式和测量结果，并提出了改进建议．     

高能重离子碰撞中的末态分布与夸克物质信号

本文结合液体动力学模型与状态方程,分析讨论了高能重离子碰撞过程中是否发生相变以及相变的级次对末态分布的影响.由于集体效应随入射能量和核质量的增加而加强,预计对于RHIC(每对核子能量S=100+100GeV)上进行的¹⁹⁷Au-¹⁹⁷Au碰撞,快度分布有可能作为夸克物质形成的信号.     

一种壳体理论的建议及其杂交元解

扩充一种以壳体中面的平动和转动为位移变量的壳体理论~[1]为一般形式,以及给出一种杂交元解,用算例证明这里给出的理论和数值解法的正确性。     

SU(10)手征亚夸克大统一模型

本文在一些条件的限制下,讨论了SU(N)手征亚夸克大统一模型,结果要求10≤N≤19。并具体地构造了一个最小的SU(10)手征亚夸克大统一模型,预言了五代夸克和轻子的存在。 关键词：     

满足Complementarity的SU(9)亚夸克大统一模型

本文建立了一个满足在黑格斯相和禁闭相之间的Complementarity原理的SU(9)亚夸克大统一模型,预言了四代夸克和轻子的存在,并且得到了合适的超色标度.     

牛顿第二定律演示实验 牛顿第二定律演示实验的改进

在进行牛顿第二定律的教学时,我们做了一个简单直观的演示,收到较好的效果,现介绍于下。实验器材包括铁架台(附夹子与铁棍)两个;有槽木板两个(长约1.2米);钢球三个,其中两个的质量相等,设为m,另一个质量为2m。实验装置如图1所示.使AB=2A_1B_1,AC=A_1C,E为A_1C的中点。C处放一长方木块,好让小球与它撞击而发声。     

Influence of the net gain on characteristic of stochastic resonance in a single-mode laser system

The phenomenon of stochastic resonance (SR) is found in a single-mode laser system driven by the colored pump noise with signal modulation and the quantum noise with cross-correlation between the real and imaginary parts. When the net gain a0 changes, it is found that, 1) the shape of the curve of the signal-tonoise ratio (SNR) versus the pump noise self-correlation time T exhibits a changing process of multiform SR, from single-peak SR to simultaneous existence of resonances and suppressions; 2) the curve of SNR versus signal frequency Ω experiences a complicated changing process from the monotonous descending to the simultaneous appearances of a maximum and a minimum, and finally to monotonous descending; 3)the curve of SNR versus cross-correlation coefficient between the real and imaginary parts of the quantum noise λq appears an acute single-peak SR. Therefore, the net gain a0 greatly influences the characteristic of SR of laser system.