质子辐照对MQ硅树脂增强的加成型硅橡胶质损及热性能的影响

采用空间综合辐照模拟设备研究了100 keV和150 keV能量的质子辐照对MQ硅树脂增强的加成型硅橡胶的损伤及其对硅橡胶热性能的影响。试验结果表明：质子辐照后,硅橡胶表面出现损伤裂纹,随辐照能量和剂量的增加,裂纹的数量增多,裂纹增大;质子辐照后,硅橡胶的质量有所损失,其质损率随辐照能量和剂量的增加而增加;质子辐照后硅橡胶的耐热性随辐照剂量的增加先略有增加而后下降,经辐照后的硅橡胶在玻璃态和玻璃转变区的温度区间内收缩率降低,而在高弹态的温度区间内膨胀率增加。     

Indirect Methods For Determination of The Protective Effects of Coating Films on The Surface of Crystals

The extents of the protective effects of coating films on the surface of crystals were determined. Three different samples were made with different quantities of coating fluid (Sepifilm LP 010 in 10% aqueous solution). Since the atomizing rate was constant, the coating time increased in parallel with the volume of coating fluid applied. The direct measurement of film thickness and smoothness is very difficult, and therefore indirect methods were used. Dimenhydrinate was chosen as model drug; this is a heat-sensitive antihistamine with a low melting point. This temperature can be reached during the tableting process. The behaviour of samples on exposure to heat was examined by differential scanning calorimetry. The water uptakes of the samples were determined with an Enslin apparatus. Plasticity was studied with an instrumented tablet machine. These indirect methods (thermal conductivity, water uptake and plasticity measurements) revealed connections between the results of the various experiments. An overlong coating time decreased the protective effect of the coating film. This revised version was published online in August 2006 with corrections to the Cover Date.     

Adunanza del 25 Dicembre 1904 [418a]

Rendiconti del Circolo Matematico di Palermo Series 1 -     

Adunanze dal 12 giugno all’II dicember 1904

Rendiconti del Circolo Matematico di Palermo Series 1 -     

Ueber das Vorkommen und die Bestimmung des Kupfers in organischen Substanzen

Ohne Zusammenfassung     

Ueber die Methoden der Feinheitsbestimmung der Mehle

Ohne Zusammenfassung