Einsteins field equations with G and Λ both varying with time are considered in the presence of a perfect fluid for five-dimensional cosmological model in a wa
A new combination Monte Carlo (MC) technique of the classical Metropolis algorithm and the Swendsen-Wang cluster algorithm is proposed.
我国育成的杂交粳稻,多引用Chinsurah BoroⅡ细胞质(简称BT型细胞质)培育的不育系。该细胞质自1972年引进后,经相互转育已育成了一大批粳稻不育系。如东北、华北的黎明A、秀岭A、秋光A等;长江流域的六千辛A、当选晚2号A、农虎26A、76-27A等。BT型不育系一般在三核期败育,此时花粉粒已积累较多的淀粉,可以用I-KI溶液染色,所以这类不育系在分类上又称染败型不育系。近年来,在生产和
Europium-doped yttrium-silicon-oxide-nitride phosphors are synthesized by carbothermal reduction and nitridation method. The crystal structure of the phosphors
A scanning multi-axis differential optical absorption spectroscopy (DOAS) system is developed for monitoring tropospheric NO2 abundance. Measurements at differe
在1龄胶树行间间作了两种生态型坚尼草(坚尼A和B),试验进行了1年半。试验结果表明,坚尼A的干物质产量高于坚尼B的,但两者的产量都较低。每年施氮肥从90公斤/公顷增至360公斤/
A three-dimensional finite element models for phase change random access memory (PCRAM) is established to simulate thermal and electrical behaviours during RESE
With time-of-flight and electric field ionization detection technique, we investigate the motional Stark effect for highly excited Rydberg barium in high magnet
We study the influence of viscosity on DNA dynamics. By employing the nonlinear Peyrard-Bishop-Dauxois (PBD) model, it is shown that the DNA dynamics can be exp
The threshold energies of radial Bow in reactions of 40Ca + 40Ca and 48Ca + 48Ca in central collisions are investigated within an isospin dependent quantum mole