红外辐射与物质作用热过程的研究

从原子与分子物理学的概念出发,讨论了红外辐射与物质作用的热过程。认为:单一频率的选择性加热,无助于干燥过程,而且会阻碍这种过程的进行,只有向所有的模式提供能量,才能实现热效应作用。而对固化、聚合、缩合作用等,选择特征频率提供能量是有效的。     

浅谈0FDM中的关键技术

本文论述了OFDM系统由的关键技术，分析了OFDM的优缺点，指出了OFDM技术广阔的应用前景。     

3f多路光电混合实时模式识别系统

介绍一种新型的3f多路光电混合实时模式识别系统。采用一平面微透镜列阵器件得到输入物体的多路傅里叶变换,匹配滤波器是构造在石英基片上的石英BPOF。该系统实现输入图像与存储的多个参考图像的实时并行相关。     

Weak Noether symmetry for nonholonomic systems of non-Chetaev type

Based on the weak Noether symmetry proposed by Mei F X, this paper discusses the weak Noether symmetry for nonholonomic system of non-Chetaev type, and presents expressions of three kinds of conserved quantities by weak Noether symmetry. Finally, the application of this new results is showed by a practical example.     

Hojman conserved quantity deduced by weak Noether symmetry for Lagrange systems

This paper studies the Hojman conserved quantity, a non-Noether conserved quantity, deduced by special weak Noether symmetry for Lagrange systems. Under special infinitesimal transformations in which the time is not variable, its criterion is given and a method of how to seek the Hojman conserved quantity is presented. A Hojman conserved quantity can be found by using the special weak Noether symmetry.     

Performance of the low pressure MWPCs for f ission fragments under a high background

Two couples of low pressure multi-wire proportional chambers (MWPC) were located in the target chamber to detect fission fragments in a hypernuclei producing experiment at Thomas Jefferson National Laboratory (Jlab). In the experiment, a continuous wave (CW) electron beam was applied to form hypernuclei by electromagnetic interaction. In the target chamber, the high energy (1.853 GeV) and high intensity (500 nA) primary electron beam caused a high particle background, which influenced the detection of the fission fragments. This report described the design of the MWPCs and studied the fission-fragment detecting performance of them under such a high background. The efficiency of the MWPCs was given with the help of a high resolution kaon spectrometer. At the same time, the background particles were discussed with a Monte Carlo code based on GEANT4.     

交联酶晶体催化剂

交联酶晶体是近年发展起来的新型晶体催化剂，即具有酶的一般特性，催化活性和选择性高，在温和条件下反应等，又具有非均相化学催化剂的操作稳定性高，易回收利用的特点。ＣＬＥＣＳ技术是将酶结晶技术和化学交联技术结合，提高酶抵抗极端条件以及有机溶剂中的稳定性，除了广泛应用于有机合成中，还适合于各种各样的蛋白质及其他领域，如酶传感器，化妆品和洗涤剂等即需要高稳定性和高活性蛋白质的领域。     

胜利褐煤燃烧中未反应残留物结构特性及铁的添加效应

利用TGA确定胜利褐煤盐酸脱灰煤和添加铁组分脱灰煤的着火温度,在着火温度进行燃烧反应,收集燃烧反应一定时间后的未反应残留物,利用FT-IR、XPS、XRD和Raman等对其进行表征,研究了胜利褐煤燃烧过程中铁的影响规律。结果表明,铁的加入降低脱灰胜利褐煤的着火温度,当添加量为3.50%时,着火温度降低的幅度最大。在着火温度燃烧反应一定时间后未反应残留物的FT-IR表明,其有机官能团结构无显著变化,说明铁的添加并不影响其有机官能团结构特性,有机官能团不会对燃烧性能产生太大的影响。添加铁使SL+在燃烧过程中未反应残留物结构芳香度下降,晶面间距增大,晶体结构中缺陷位相对增加,石墨化程度降低,烷基侧链增多,碳氧结构迅速减少,说明铁组分的加入改变了其燃烧过程中碳氧结构转化特性,抑制了石墨化转化速率与程度,即在燃烧反应过程中改变了其未反应残留物的微结构,从而改变了其反应历程,加速燃烧反应速率。     

合成聚合物在手性分离中的应用进展

介绍了合成聚合物在手性分离中的应用,合成聚合物包括：包含有环糊精的聚合物、包含有冠醚的聚合物、聚丙烯酰胺衍生物、聚甲基丙烯酸酯衍生物、聚表面活性剂等。共引用文献44篇。