银纳米颗粒对溶菌酶纤维化影响的浓度效应

纳米颗粒对蛋白质淀粉纤维化过程的影响机制对扩大其在生物学诊断和纳米药物应用中起到至关重要的作用. 在本研究中,通过拉曼光谱结合原子力显微镜和硫磺素T荧光光谱实验研究不同浓度银纳米颗粒条件下的溶菌酶淀粉纤维化过程. 利用四个具有代表性的拉曼光谱指标在分子水平上监测蛋白质的三级结构和二级结构的转化过程,如：Trp费米共振双峰(1340 cm^-1和1360 cm^{-1-1-1相似文献}   

R对RLC串联谐振测量方法的影响

RLC串联谐振电路实验是《大学物理实验》中的一个重要内容。一般教材采取通过测量电阻两端电压的谐振曲线来确定谐振频率,但发现此时U_r/U通常小于1,从而会感到疑惑。本论文分别从实验和理论的角度验证了通过测量电感和电容两端电压的谐振曲线来确定谐振频率的可行性。     

表面桥氧空位对甲醛在二氧化钛表面吸附的影响

Oxygen vacancy (O_v) has significant influence on physical and chemical properties of TiO₂ systems,especially on surface catalytic processes.In this work,we investigate the effects of O v on the adsorption of formaldehyde (HCHO) on TiO₂(110) surfaces through firstprinciples calculations.With the existence of O_v,we find the spatial distribution of surface excess charge can change the relative stability of various adsorption configurations.In this case,the bidentate adsorption at five-coordinated Ti (Ti_5c) can be less stable than the monodentate adsorption.And HCHO adsorbed in O_v becomes the most stable structure.These results are in good agreement with experimental observations,which reconcile the long-standing deviation between the theoretical prediction and experimental results.This work brings insights into how the excess charge affects the molecule adsorption on metal oxide surface.