The behavior and strength of composite columns of rectangular cross - section with doubly symmetric structural steel have been widely examined by domestic and overseas researchers through experimental and theoretical ways . many simplified design equations and computer - based analysis methods have been proposed . however , the analysis and design procedures for composite columns of complex cross sections are still not available 目前国内外研究者主要针对配置对称结构钢的矩形截面组合柱,进行了较大量的试验与理论研究,提出了一些简化设计公式及计算机分析方法,但对复杂截面组合柱尚没有建立起有效的设计与分析方法。
How to reduce noise figure of operational amplifier are studied in this paper . through design of a low - noise opa , introduce low - noise design of the input stage in detail . and with the analysis of computer , suitable sizes of the input apparatus are choosed . at last , by simmulation and verification on this opa , the result is satisfied 研究了如何从电路结构上减少运算放大器的噪声,以一种低噪声运放为例,着重介绍输入级设计,并借助计算机分析选择合适的输入器件尺寸,最后通过对运放噪声的仿真验证,得到了满意的结果。
Computer analysis of the cdna and its encoding protein the amino acid sequence encoded by full - length cdna is deduced by u - sing the blast procedure from ncbi . the homogeneous comparison and analysis are performed in the genbank and protein date house , while the functional residual sequence of the protein is analyzed in the molecular biological net , ht - tp : / / www 全长山na序列及其编码蛋白质的计算机分析从cdna的序列推导出它所编码的氨基酸序列,应用ncbi提供的blast程序在genbank数据库和蛋白质数据库进行同源性比较分析,在n tp : 。
Then more detailed analysis on hydraulic state of current shenzhen ' s gas pipe - system can be done by computer analytic methods , especially when the gas source is connected to city ' s pipe - system , the influence resulted by junctions on the transport capacity of pipe - system has been computed . the results will offer reliable and scientific reference to how to use the city ' s pipe - system ' s transport capacity completely and how to select a proper junction 在此基础上,通过利用计算机分析的方法,对深圳市的现有燃气管网系统进行了较为详细的水力工况分析,特别是针对天然气气源接入城市管网的过程中,系统的接入点对管网输气能力的影响进行了计算,计算结果对充分利用现有城市管网的输气能力,选择合适的天然气进入接口位置,将提供较为可靠和实用的科学依据。
The sequences of the structural protein genes and deduced a mino acid sequence of isolate lx4 were compared . by computer software , complete main structural genes sequence of ibv domestic strain and molecular characteristic genetic - variant analyses , and probably t cell and b cell epitopes of the main structural protein of infectious bronchitis virus were analyzed premently 通过计算机分析软件,对我国ibv地方流行毒株lx4的主要结构基因全序列、分子特征及遗传变异进行分析比较,并初步分析预测传染性支气管炎病毒主要结构蛋白上可能存在的t细胞和b细胞表位。