, 2014 采用分子蒸馏技术从异氰酸酯热解液中分离多亚甲基多苯基多异氰酸酯(PMPPI),通过设计L_(25)(5~6)正交实验对PMPPI-氯苯的模拟热解液进行分离,得到最佳工艺条件为:进料速度2 mL/min、蒸馏温度100℃、转子速度120 r/min、蒸馏压强4.0 kPa,该条件下PMPPI的分离纯度高达99.65%.使用上述最佳分离条件对多亚甲基多氨基甲酸甲酯(PMDC)热解分离PMPPI的真实热解液进行分离,分离高效液相色谱检测不到氯苯 ...
李会泉 +5 more
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[Selenocystine inhibits colon cancer cell growth by promoting reactive oxygen species generation to trigger oxidative damage]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoSong Q +8 more
europepmc +1 more source
[Construction and biological characterization of a Proteus mirabilis strain with modABC gene deletion]. [PDF]
Nan Fang Yi Ke Da Xue Xue Bao, 2023 Huang Y +4 more
europepmc +1 more source
一种基于全氟烷基磺酸根阴离子的磺酸功能化离子液体及其制备方法
, 2014 一种基于全氟烷基磺酸根阴离子的磺酸功能化离子液体及其制备方法，该类离子液体的结构式用下式表示：其中，m代表3或4，n代表1-9的整数，R为-CH3，-CH2CH3或-(CH2)3CH3。其制备方法为：采用含氮杂环化合物与氯乙醇反应生成的物质或者氯化胆碱作前体；然后将前体与全氟烷基磺酸盐发生置换反应，将Cl-置换为CF3(CF2)nSO3-获得中间体；采用磺内酯与前述中间体阳离子上-OH进行开环反应引入磺酸基团获得目标离子液体。本发明所获离子液体与之前的磺酸功能化离子液体相比较，粘度降低、可设计性增强 ...
王畅, 刘静, 高艳安, 刘秀梅
core
[Nanomaterial-driven Lateral Flow Immunoassay: Technological Development and Application]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZheng J, Hu X, Gu B.
europepmc +1 more source
, 2016 目前，氮素污染是我国水体污染的主要原因之一。废水生物脱氮技术因其具有经济、高效、无害等特点，受到世界各国的普遍关注。在生物脱氮中，异养硝化一好氧反硝化菌由于可以同时完成同步脱氮、异养硝化和好氧反硝化这三种功能而受到重视。但是，异养硝化-好氧反硝化菌的能量代谢容易受水质条件如盐度、重金属、低温等胁迫因素影响，进而影响其处理效果。本研究以异养硝化-好氧反硝化菌HN-02（Aeromonashydrophila sp.）为对象，从底物降解水平（CODCr、TN）及能量代谢变化（脱氢酶酶活、电子传递体系活性 ...
马小亚
core
[Research progress on the pretreatment and analysis of prohibited components of glucocorticoids in cosmetics]. [PDF]
Se PuLiu L, Xiao XH, Fang JH, Li GK.
europepmc +1 more source
[Current advances in the analysis of free RNA modified nucleosides by high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuZhang LY, Zhang WB, Wang HL.
europepmc +1 more source
[Ethanol Extract of <i>Vicatia thibetica</i> de Boiss. Improves Chronic Atrophic Gastritis in Rats via the HO-1/Nrf2 and Myd88/AKT/PI3K Signaling Pathways]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanWangjieciren +5 more
europepmc +1 more source
[Niranthin ameliorates Crohn's disease-like colitis in mice via antagonizing intestinal epithelial cell apoptosis and regulating intestinal Th1/Th2 immune homeostasis]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoWen H, Lin J, Zuo L, Liu M.
europepmc +1 more source