一种用于SOC设计中的智能I/O处理器的实现

文章介绍了SOC设计流程，智能I／O处理器组成，在开发该处理器对VHDL源代码的优化问题。     

Cloning of a novel signal-transducing adaptor molecule containing an SH3 domain and ITAM

We molecularly cloned a cDNA coding for a novel phosphotyrosine molecule with a 70 kDa molecular mass, named STAM (signal transducing adaptor molecule), which is tyrosine-phosphorylated rapidly after stimulation with various cytokines such as IL-2, IL-3, IL-4, IL-7, GM-CSF, EGF and PDGF. STAM contains an SH3 (Src-homology 3) domain and the ITAM (immunoreceptor tyrosine-based activation motif), suggesting that STAM acts as an adaptor molecule involved in signal transducing pathways from the cytokine receptors.     

浅论网络监控系统体系结构选择

随着通讯网络技术的发展，网络监控应用也越来越普遍。本文主要介绍了网络监控体系结构的种类以及优缺点。     

Observation of large diamagnetism in La-Sr-Nb-O films up to room temperature

Large diamagnetic transitions along with sharp resistive transitions were observed in the La-Sr-Nb-O system near room temperature (290 K). The amplitude of the diamagnetism reaches 35% of that of a pure Nb sheet. In addition, a behavior similar to weak magnetic spin ordering was observed for some samples at a temperature of about 290 K, over a temperature range of 30 K. The diamagnetism reappears above this temperature and continues up toT 320 K. It is not clear what composition ratio of La-Sr-Nb-O is responsible for this large diamagnetism and the high critical temperature. The yield probability of these samples is around 50%. The characteristics of the samples having not passed through many thermal cycles remain stable for about 1 month.     

Possibility of superconductivity with highT c in La-Sr-Nb-O system

We prepared La-Sr-Nb-O system samples both in bulk form and as a film, with sharp resistive transitions at temperatures of 228–323 K, depending on the annealing conditions. The sharp resistive transitions might be attributable to superconductivity. Magnetic ordering was observed over a narrow temperature range around 40 K for some of the samples.     

基于SIP的网络视频监控系统*

介绍了初始会话协议SIP.在SIP和一般视频监控系统模型的基础上,提出了一种基于SIP的网络视频监控系统,给出了分层网络模型,并对其各功能模块的作用进行了重点阐述.该分层网络模型的建立使得构建数字化、网络化、智能化、多媒体化视频监控系统成为可能.     

双金属盘式制动器的试制与研究

汽车工业的发展对刹车系统的关键零部件——刹车盘的抗冲击韧性提出了更高的要求。研究结果表明，把灰铸铁(HT250)与用优质碳素结构钢25Mn预先冲压成型的钢件镶铸在一起制成的1种新型刹车盘，既具有灰铸铁良好的抗磨、减震、尺寸稳定等性能，又具有较高的抗冲击韧性，能够满足汽车工业高速化、轻量化对刹车盘的综合要求。     

叔碳酸乙烯酯的性能及其应用

介绍了叔碳酸乙烯酯的性能及其应用。叔碳酸乙烯酯是一种多支链一元饱和羧酸乙烯酯，其α碳原子上丰富的烷基形成的空间位阻和烷基的非极性，使其表现出优异的抗紫外线性能和极强的疏水性能，从而使其聚合物或共聚物具有耐候性、耐水性、耐碱性好和表面张力低等特点。其分子中的双键使其具有很好的反应性，能与乙烯、丙烯酸酯、苯乙烯等具有双键的单体进行共聚，提高其共聚物的性能，拓宽应用范围，是一种优良的改性单体。     

聚氯乙烯塑料中多种邻苯二甲酸酯类增塑剂的同时测定

为了在线监控聚氯乙烯塑料中增塑剂的含量,利用傅立叶变换红外光谱法-ATR技术测定样品的红外光谱,采用偏最小二乘法对所测红外光谱进行分析,建立了一种无损快速分析方法,定量地测定聚氯乙烯塑料中多种邻苯二甲酸酯类增塑剂的含量。该方法测量精密度的变异系数小于6%,测量准确度的变异系数小于3%。该方法不受基体的干扰,简单快速,适合于流水线的质量控制。