论我国三线企业的根本性改造

论我国三线企业的根本性改造ＥｓｓｅｎｔｉａｌＴｒａｎｓｆｏｒｍａｔｉｏｎｏｆＣｈｉｎａ＇ｓ“ＥｎｔｅｒｐｒｉｓｅｓｉｎＲｅｍｏｔｅＡｒｅａｓ”￥／／刘洪海（北京中国发展战略学研究会北京１０００５３）编者按当今国际舞台上的竞争越来越趋向以科技为主导，以...     

一种基于色料混合理论的配色仿真算法

以工业配色应用为背景，首先探讨了计算机配色的两种基本理论：三刺激值理论与色料混合理论，然后分析了基于色料混合理论的织物染色算法的不足，提出了一种新的配色仿真算法，并应用于涂料配色实践。从仿真结果来看，该配色仿真算法计算精确，能够有效地减小配方色差。     

小水线面三体船阻力试验研究

提出了一种阻力性能优良、船长排水量系数小的高速小水线面三体船型。对这种船型进行了2种主体型线、9种侧体布局的阻力试验，分析研究了阻力性能，讨论了船长排水量系数和侧体布局对阻力性能的影响。并给出了与细长型三体船阻力试验的对比结果。     

圆饼卫星三轴姿态控制

利用卫星低轨道两个主要环境力矩 (重力梯度矩和地磁力矩 )对卫星三轴姿态进行控制。卫星的形状为圆饼状 ,用以获得所需的重力梯度矩。卫星上的永久磁棒获取所需的地磁力矩。为了提高卫星的姿态精度 ,沿永久磁铁方向安装一反作用飞轮。对卫星在圆轨道的姿态进行了分析 ,并给出仿真结果。从分析和仿真结果可以看出 ,此卫星具有结构简单、姿态稳定、精度高等优点。     

机电传感器的特征化及其特征参数的确定

本文指出用Z参数和ABCD参数分别表示机电传感器在接收状态和发生状态下的网络参数是方便且合理的。然后本文规定接收器灵敏度和发生器发射电压和电流响应作为其相应的特征化参数。进而,本文提出一个三参数模型描述传感器的行为,并发展一个复数最小二乘拟合Fortran计算方法求出数学介。这样,机电传感器的网络参数和特征化参数可从它的一组电阻抗和负载阻抗数据对确定。     

三色伊蝇蛆病流行规律和环境防治

三色伊蝇蛆病流行规律和环境防治严如柳，陈美，刘荫奎，黄秀莲（厦门大学生物学系）（仙游县畜牧兽医站）三色依蝇（ＩｄｉｅｌｌａｔｒｉｐａｒｔｉｔａＢｉｇｏｔ），幼虫在猪舍里，夜间钻进猪皮肤吸吮血液，引起蝇蛆病．本病在国外尚未见报道，国内主要见于江苏省的江...     

浅淡英汉语的十个最常用词──英汉词汇比较研究系列文章之九

此文对英汉语的十个最常用词的词音、词形、词类、构词能力以及英汉语义对应等情况作了比较分析，探索了这些高频词所反映的诸多相同和相异的英汉语言和文化方面的特征。     

Effects of truncated mutants of the ε subunit of chloroplast ATP synthase on the fast phase of millisecond delayed light emission of chloroplast and its ATP synthesis ability

The ε subunit of the chloroplast ATP synthase and the truncated ε mutants which lack some amino acid residues from the N-terminus or C-terminus were overexpressed in E. coil When the ε subunit or the truncated ε proteins was added to the spinach chloroplast suspension, both the intensity of the fast phase of millisecond delayed light emission (ms-DLE) and the cyclic and noncyclic photophosphorylation activity of chloroplast were enhanced. With an increase in the number of residues deleted from the N-terminus, the enhancement effect of the N-terminal truncated proteins decreased gradually. For the C-terminal truncated proteins, the enhancement effect increased gradually with an increase in the number of residues deleted from the C-terminus. Besides, the ATP synthesis activity of ε-deficient membrane reconstituted with the ε subunit or the truncated ε proteins was compared. The ATP synthesis activity of reconstituted membrane with the N-terminal truncated proteins decreased gradually as the number of residues deleted from the N-terminus increased. For the C-terminal truncated proteins, the ATP synthesis activity of reconstituted membrane increased gradually with an increase in the number of residues deleted from the C-terminus, but was still lower than that of the wild type ε protein. These results suggested that: (a) the N-terminal domain of the ε subunit of the chloroplast ATP synthase could affect the ATP synthesis activity of ATP synthase by regulating the efficiency of blocking proton leakage of ε subunit; and (b) the C-terminal domain of the ε subunit of the chloroplast ATP synthase had a subtle function in modulating the ATP synthesis ability of ATP synthase.     

Cyclotrimerization of nitriles catalyzed by Li<Subscript>3</Subscript>N

Nitriles were unexpectedly trimerized into s-triazines or amino-pyrimidines in high yields in the presence of catalytic amount of Li3N, resulting in a simple, solvent-free and easy-to-scale-up one-pot way to synthesize s-triazines and 4-amino-pyrimidines with high yield.     

ATP content and biomass activity in sequential anaerobic／aerobic reactors

Specific ATP content of volatile solids was measured to characterize the sludge activity in a sequential anaerobic/aerobic wastewater treatment system, with an upflow anaerobic sludge blanket (UASB) reactor and a three-phase aerobic fluidized bed (AFB) reactor. The wastewater COD level was 2000-3000 mg/L in simulation of real textile wastewater. The ATP content and the specific ATP contents of volatile solids at different heights of the UASB reactor and those of the suspended and immobilized biomass in the AFB reactor were measured. In the UASB reactor, the maximum value of specific ATP (0.85 mg ATP/g VS) was obtained at a hydraulic retention time (HRT) 7.14 h in the blanket solution. In the AFB reactor, the specific ATP content of suspended biomass was higher than that of immobilized biomass and increased with hydraulic retention time reaching a maximum value of 1.6 mg ATP/g VS at hydraulic retention time 4.35 h. The ATP content of anaerobes in the UASB effluent declined rapidly under aerobic conditions following a 2nd-order kinetic model.