Based on the municipal health archives from Shanghai Municipal Archives,this article investigated the content,meaning and nature of the relief activities which Shanghai municipal did to the refugees in wartime.Althoug...Based on the municipal health archives from Shanghai Municipal Archives,this article investigated the content,meaning and nature of the relief activities which Shanghai municipal did to the refugees in wartime.Although there is no doubt that the existence of the Concession consisted of the sense of colonization,when it comes to the relief activities from Municipal Office in wartime,we should give them objectively understanding and evaluation.展开更多
4[4’-(phenylazo)phenylazo]phenol was synthesized and characterized. Optical-induced Freedericksz transition of 5CB liquid crystal doped with trace diazophenyl was studied. It was observed that the doped 5CB dramatica...4[4’-(phenylazo)phenylazo]phenol was synthesized and characterized. Optical-induced Freedericksz transition of 5CB liquid crystal doped with trace diazophenyl was studied. It was observed that the doped 5CB dramatically decreased the optical field threshold, and the Freedericksz transition threshold occurred at optical intensity level of 0.3 mW/mm2 for the 12.5 μm thickness planar alignment doped 5CB, which is three orders of magnitude lower than that for the pure 5CB. This new phenomenon indicated that trans-cis isomerization of diazophenyl plays an important role in the decrease of the Freedericksz transition threshold.展开更多
文摘Based on the municipal health archives from Shanghai Municipal Archives,this article investigated the content,meaning and nature of the relief activities which Shanghai municipal did to the refugees in wartime.Although there is no doubt that the existence of the Concession consisted of the sense of colonization,when it comes to the relief activities from Municipal Office in wartime,we should give them objectively understanding and evaluation.
基金the National Natural Science Foundation of China (Grant No. 19474073) and the Natural Science Foundation of Guangdong Province (Grant No. 980346).
文摘4[4’-(phenylazo)phenylazo]phenol was synthesized and characterized. Optical-induced Freedericksz transition of 5CB liquid crystal doped with trace diazophenyl was studied. It was observed that the doped 5CB dramatically decreased the optical field threshold, and the Freedericksz transition threshold occurred at optical intensity level of 0.3 mW/mm2 for the 12.5 μm thickness planar alignment doped 5CB, which is three orders of magnitude lower than that for the pure 5CB. This new phenomenon indicated that trans-cis isomerization of diazophenyl plays an important role in the decrease of the Freedericksz transition threshold.
