计量泵流量检验的计算机应用

本文从计量泵流量检验方法的要求出发,对原计量泵流量检验中,控制计数的方法和称重的方法所存在的弊病及检验成本进行了分析。提出了集计数、控制、称量和计算于一体的计量泵流量检验新方案,并介绍了为实现方案所采用的以单片微机为核心的计量泵流量检验机电一体化系统.经实际试验表明该机电一体化系统不仅稳定、可靠、精度满足要求,而且使检验过程自动化程度大为提高,成本明显下降,有推广应用价值.     

用FoxBase实现文本阅读器的方法

本文介绍了用FoxBase＋2．10设计的文本文件闲读器．该阅读器具有前后翻页、翻行的功能，稍加扩充也可具有查找、打印等功能．     

Electroluminescent property of tetrakis(phenyl)porphyrin carbonyl ruthenium(Ⅱ)

Luminescent tetrakis(phenyl)porphyrin carbonyl ruthenium (Ⅱ) (RuTPPCO) complex was employed as a doped emitting material to fabricate red organic electroluminescent (EL) devices. The EL device structure was [ITO/copper phthalocyanine (Cu-Pc) (15.0 nm)/N,N′-di(α-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4, 4′-diamine (NPB)(60.0 nm)/tris(8-hydroxyquinolinato)aluminum (Alq3):RuTPPCO (50.0 nm)/LiF (1.0 nm)/Al (200.0 nm)]. The codeposited films of Alq3:RuTPPCO were utilized as the emitting layer to construct EL devices. Experimental results showed that energy transfer from Alq3 to RuTPPCO occurred in the codeposited films. The EL property of the codeposited Alq3:RuTPPCO films with different RuTPPCO concentrations was described. For the EL device with the RuTPPCO concentration of 15% by weight, deep red electroluminescence at 656 nm with the maximum EL efficiency of 0.32 cd/A was achieved.     

线性模型中误差方差估计的级数形式的收敛速度

设y_i=x_i′β e_i,i=1,…,n是一般线性模型,σ~2=Vare_i,记误差方差σ~2的估计量为δ_n~2,δ_n~2是残差平方和(除以适当的自由度)。假定试验误差e_1,e_2,…独立同分布。本文研究了δ_n~2的级数形式的收敛速率。     

Interaction of Rabbit C-reactive Protein with Phospholipid Monolayers at Air/Water Interface

ＩｎｔｅｒａｃｔｉｏｎｏｆＲａｂｂｉｔＣ┐ｒｅａｃｔｉｖｅＰｒｏｔｅｉｎｗｉｔｈＰｈｏｓｐｈｏｌｉｐｉｄＭｏｎｏｌａｙｅｒｓａｔＡｉｒ／ＷａｔｅｒＩｎｔｅｒｆａｃｅ＊ＸｉａｏＣａｉｄｅ（肖才德），ＳｕｉＳｅｎｆａｎｇ（隋森芳）Ｄｅｐａｒｔｍｅｎｔｏｆ...     

心脏生物电兴奋传播过程的仿真算法研究

分析了兴奋在人体心脏中的传播过程，论证了兴奋传播为矢量传播．提出了一种新的计算机仿真算法，较圆满地解决了由于心脏离散化而产生的仿真误差．新的算法对于建立更加真实的心脏生物电过程模型具有重要意义．     

DTG阻力矩实验测试方法研究

用一种简便的实验方法测试分析了动力调谐陀螺仪的阻力矩，进行了理论近似计算验证，所得结果比较相近，该方法对于陀螺阻力矩分析特别是了陀螺仪应用单位进行了阻力矩分析具有较大的实用性。     

季戊四醇溴代芳基磷酸酯类阻燃剂

以三溴苯酚钠、三氯氧磷、季戊四醇为原料,通过酯化和缩合两步反应合成了阻燃剂3,9-双(2',4',6'三溴苯氧基)-2,4,8,10-四氧代-3,9-二磷螺环-3,9-二氧[5.5]十一烷。系统地研究了缩合反应的条件,如介质、时间、温度、配比、原料质量对产率的影响;并采用元素分析,红外、核磁共振、质谱等确证了它的结构。测定了它的溶解度、毒性、热性能、燃烧热及其在维纶蓬布,聚丙烯中的阻燃性。     

Angiotensin-converting enzyme 2 is a functional receptor for the SARS coronavirus

Spike (S) proteins of coronaviruses, including the coronavirus that causes severe acute respiratory syndrome (SARS), associate with cellular receptors to mediate infection of their target cells. Here we identify a metallopeptidase, angiotensin-converting enzyme 2 (ACE2), isolated from SARS coronavirus (SARS-CoV)-permissive Vero E6 cells, that efficiently binds the S1 domain of the SARS-CoV S protein. We found that a soluble form of ACE2, but not of the related enzyme ACE1, blocked association of the S1 domain with Vero E6 cells. 293T cells transfected with ACE2, but not those transfected with human immunodeficiency virus-1 receptors, formed multinucleated syncytia with cells expressing S protein. Furthermore, SARS-CoV replicated efficiently on ACE2-transfected but not mock-transfected 293T cells. Finally, anti-ACE2 but not anti-ACE1 antibody blocked viral replication on Vero E6 cells. Together our data indicate that ACE2 is a functional receptor for SARS-CoV.     

甲醇——煤油渗碳气氛碳势控制特点及方法

本文对甲醇——煤油渗碳气氛的渗碳行为及碳势控制特点进行了分析,提出了温度——二氧化碳或温度——氧势双参数碳势控制所必须的工艺条件。并在实践中找出了适宜的控制方法,在井式气体渗碳炉上实现了该气氛碳势的微机控制。