The article deduces emf from varying magnetic field and motional emf in a general case further researches induced electric field and presents two important formulae of induced electric field.

Monte Carlo simulation with the energetics described by the embedded atom method has been employed to calculate dependence of the grain boundary cohesion on the Zr bulk atom concentration, for the Ni_3Al-x % Zr (100%Ni\\100%Ni)\/Σ5(210)/36.87° symmetric tilt grain boundary, at the equilibrium. Calculations show that when x (the Zr bulk atom concentration) increases from 0.1 to 0.5, the Zr enrichment increases, both the Ni enrichment and the Al depletion maximizes at x=0.3. The calculations also show the best cohesion of the grain boundary at (x=0.3).

对有限核的相对论哈特利近似(Hartree近似)作了进一步的发展,把相对论Hartree近似拉氏函数中的耦合常数构造成密度相关的,利用了核物质的相对论BHF结果 ,计算了16O和40Ca的结合能和均方根半径,与实验符合得很好.同时,也计算了来自于电子散射的电荷密度,进而讨论了与核物质性能有关的核子-核子相互作用的依赖性.

Researches the energy of nuclear matter by adopting RBHF(Relativistic Brueckner Hartree Fock) theory,and compares HF approximation.The important results have been obtained.The correlation corrections make major modifications in the energy of nuclear matter and self-energy quantity ∑~(+ +)_0 (p).

Discusses multimedia softwares' characters and puts forward several viewpoints on applying multimedia softwares to college physics teaching. Futhermore,it points out that at the present time multimedia softwares can not completely replace traditional teaching methods.

The binding energy and r.m.s. radii of ~(16)O and ~(40)Ca closed nuclei are calculated with the Dirac-Hartree model,in the framework of relativistic self-consistent field.The obtained results are in agreement with the experimental observations.

研究了颜料体积浓度和填料类型,以及用量对建筑涂料光泽的影响.

在相对论D-B近似的框架内,构造了两个单玻色子交换OBE(One Boson Exchange)势,一个只包含核子,另一个还包含Δ自由度,在完备的动量-自旋空间中计算了(N,N)和(N,Δ)系统的所有t矩阵和自能,得出了较好的结果.

纳米技术是20世纪80年代末迅速发展起来的一门交叉性很强的综合学科,是在0.1-100纳米尺度上研究和利用原子与分子的结构,特性及其相互作用的高新技术.著名的诺贝尔奖获得者费恩曼在60年代就预言:如果对物体微小规模上的排列加以某种控制的话,物体就能得到大量的异乎寻常的特性.他所说的物体就是现在的纳米材料.纳米材料研究是目前材料科学研究的一个热点,纳米技术被公认为是21世纪最具有前途的科研领域.

纳米材料这一名称出现在20世纪80年代,它特指粒径为1至100nm(1 nm=10-9m)的颗粒[1],纳米材料是由纳米颗粒组成的.纳米颗粒中的电子被局限在一个十分微小的纳米空间里,电子运输受到限制,电子的平均自由程短,使电子的局域性和相干性增强.与宏观物体相比,纳米颗粒所包含的原子数大大减少,因此宏观固定的准连续能带消失,能级分裂,呈现量子化.这些实质性变化,使得纳米材料在光、电、热、磁等物理性质方面和宏观材料有很大的不同,并展现出十分广泛的应用前景.

应用铁电体极化反转的Orihara-Ishibashi理论,讨论了圆形铁电薄膜和球形铁电体的开关电流以及开关时间对系统尺寸的依赖性.数值计算表明,不论是二维还是三维铁电系统,其铁电畴反转过程中产生的开关电流都随系统尺寸减少而下降,开关时间随系统尺寸减少而缩短.