雷公藤红素脂质体的制备及其对U87 MG肿瘤细胞增殖的抑制作用

建立雷公藤红素的高效液相色谱分析方法，采用薄膜分散法制备雷公藤红素脂质体，并通过正交实验优化处方，对雷公藤红素脂质体的粒径、Zeta电位、形态、体外释放度和体外对U87 MG肿瘤细胞增殖的抑制作用进行考察。结果显示雷公藤红素脂质体的体外分析方法简单可行，制备雷公藤红素脂质体最佳处方为：药脂质量比1:40，磷脂与胆固醇质量比6:1，水化介质为10%（质量分数）海藻糖溶液。最优处方制备的脂质体的粒径约160 nm，Zeta电位为-35 mV，包封率达到80%以上。体外释放实验表明雷公藤红素脂质体具有缓释作用，且雷公藤红素脂质体抑制U87 MG细胞增殖的作用强于雷公藤红素溶液，半抑制浓度(IC50)为7.93 μmol/L。综上，制备雷公藤红素脂质体的方法稳定可行，脂质体体理化性质良好并具有良好的抑制U87 MG肿瘤细胞增殖作用

John Fryer and The Translator’s Vade-mecum: the identification of the “Vocabulary of Terms in Naval Architecture"

John Fryer was one of the most important foreign translators in China after the Opium Wars. The work that is the final result of his experience at the Jiangnan Arsenal is The Translator’s Vade-mecum. Among the preparatory manuscripts of the glossaries that were published in the Vade-mecum, the author has identified the “Vocabulary of Terms in Naval Architecture.” The purpose of this article is to examine the main features of the Vocabulary, its sources and the peculiarities of the manuscript. In the first and second sections, the Vade-mecum is concisely analysed; providing numerous references and simultaneously sketching an outlook of the production and circulation of knowledge in the period considered, the author presents theoretical discussions concerning the norms of translation applied in the Vade-mecum, its purpose and the patronage of the translation activity. In the third and main section, studying the historical significance and linguistic quality of some of the translated terms annotated in the “Vocabulary,” the author compares its terminology with the concurrent Japanese one and with other Chinese relevant nomenclatures, demonstrating the complicate interaction in the “Vocabulary” between lexical innovation and recovery of existing terms

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies