Research progress in preparation of quasi one-dimensional nanosized materials by wet chemical methods;
湿化学法制备准一维纳米材料的研究进展
Thermodynamic cycle efficiency of hypersonic airbreathing engine is analyzed using thermal engine closed cycle analysis, a quasi one-dimensional performance calculation model of hypersonic airbreathing engines is developed by one-dimensional flow approaches using the entire set of control volume conse.
用热力循环的方法对超燃冲压发动机的性能作了初步的分析,建立了超燃冲压发动机准一维性能计算分析模型,并分析了一些影响参数对发动机效率的影响。
On the basis of the possibility degree for ranking interval numbers,a new concept—the quasi-consistency is proposed.
基于区间数比较的可能度公式,提出了准一致性概念。
In this thesis, using ED (exact-diagonalization) and DMRG (density matrix renormalization group) methods,we study the effect of magnetic frustrations from next-nearest-neighbor bonds in a quasi-one-dimensional (QOD) antiferromagnetic Heisenberg (AFH) c.
本论文研究的是一种含阻挫的S =1/2准一维反铁磁自旋链但却具有亚铁磁性的海森堡模型,即在S =1/2一维海森堡反铁磁链的上方每间隔一个格点周期性地掺入一个自旋为1/2的侧自旋,并且考虑侧自旋与链上次近邻格点间的交换作用(即阻挫αJ)。
In this thesis, a kind of quasi-one-dimensional (QOD) Antiferromagnetic Heisenberg (AFII) system is studied by using the density matrix renormalization group (DMRG).
本文利用密度矩阵重整化群(DMRG)方法研究了一种准一维反铁磁海森堡自旋系统,即在一维S=1/2反铁磁海森堡链的旁边每隔一个格点周期性地掺杂一个S=1/2自旋(称为侧自旋),其中侧自旋与链上最近邻格点间的交换积分为J_2,链上最近邻格点间的交换积分为J_1(J_2,J_2>0),为了方便,取η=J_2/J_1。
Research on the Integration and Quasi-integration Decision-making of Production System;
生产系统一体化与准一体化集成决策问题研究
Quasi- integration is the agricultural industrialized development direction, and collaboration is the important approach to develop quasi-integration in agriculture.
农业产业准一体化经营是目前最为有效的组织形式,是农业产业化的发展方向,而合作制是又快又好地发展农业产业一体化经营的主要途径。
Synthesis and characterization of hyperbranched polyesters by pseude-one-step preparations;
“准一步法”合成超支化聚酯及表征