干货| SCI投稿如何选择合适的期刊？六款实用选刊工具，总有一款适合你 - 简书

Let T be a complex torus, and X the surface CP^1 x T. If T is embedded in CP^{n-1} then X may be embedded in CP^{2n-1}. Let X_Gal be its Galois cover with respect to a generic projection to CP^2. In this paper we compute the fundamental group of X_Gal, using the degeneration and regeneration techniques, the Moishezon-Teicher braid monodromy algorithm and group calculations. We show that pi_1(X_Gal) = Z^{4n-2}.

We propose a solid state maser based on Cu2O, where ensemble of highly excited Rydberg exciton states serves as a gain medium. We show that the system is highly tunable with external electric field, allowing for a wide range of emission frequencies. Numerical simulations of system dynamics are performed to optimize the conditions for efficient masing and estimate the emission power.

随着我国高校人数的增加以及高校的不断发展,在高校之中,学生干部占有越来越重要的地位,学生干部是高校之中的受教育者,但也是协助教育者进行学生管理的协助者。所以在高校中,辅导员要重视对学生干部队伍的建设,加强学生干部的培养。本文主要对学生干部队伍现状和如何利用学生干部完善学团工作体系进行了分析与探究。

The significance of the Wess--Zumino term in spin tunneling is explored, and a formula is established for the splitting of energy levels of a particle with large fermionic spin as an applied magnetic field is switched on.