[Experimental curriculum design for undergraduates based on the improvement of scientific research abilities: taking determination of pyrimidine fungicides in soil by QuEChERS-gas chromatography-mass spectrometry as an example]. [PDF]
Lyu F, Shan X, Zhao R, Zheng W.
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本发明涉及天然物质的提取及其衍生物的制备和应用。通过以玉竹根状茎干粉为原料,先采用高浓度乙醇回流,过滤,滤渣用一定体积和浓度的乙醇浸提,过滤收集滤液,再用高浓度乙醇沉淀,沉淀用无水乙醇、丙酮、乙醚脱水,烘干即得玉竹低聚糖,再通过氯磺酸-吡啶法进行硫酸酯衍生修饰获得玉竹低聚糖的硫酸酯衍生物 ...
何开泽, 杨敏, 蒙义文
core
[Interferon-α induces disulfidptosis occurrence in human liver cancer cells]. [PDF]
Bi XY +5 more
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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
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
[Research progress on the pathogenesis and clinical treatment of cirrhotic cardiomyopathy]. [PDF]
Wang KY, Liu L.
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本文从四川自贡盐厂卤水污泥中,分离出一株中度嗜盐硫酸盐还原菌。菌体为短杆状,0.9-1.1×2.0-2.5μm,革兰氏染色阴性,形成芽孢,不含脱硫孤菌素。固体培养基上无Fe2+时,菌落为半透明状;有Fe2+时菌落为黑色,直径为1-3mm。利用乳酸盐作为碳源,利用乙酸盐时必须添加生长因子。能在5%-25%(W/V)Nacl浓度范围内生长,最适生长浓度为9%-13%(W/V)。最适生长温度为35℃。最适生长pH值为7.0.根据形态和生理生化特征,该菌为脱硫肠状菌属,但与该属已报导的硫酸盐还原菌在嗜盐 ...
赵海,李安明,万波,刘克鑫 +1 more
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[A case report of primary hypomagnesemia with secondary hypocalcemia caused by <i>TRPM6</i> gene variants]. [PDF]
Zhou MY, Tang XJ, Lin SX, Chen CF.
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[Research progress on high performance liquid chromatography stationary phases based on mixed mode]. [PDF]
Li SJ, Li Z, Tang ZX, Lyu M, Wang LT.
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[Advances in the application of exhaled breath analysis technology in the detection and diagnosis of liver failure]. [PDF]
Zhang ST, Liu YS, He YL.
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[A Study of the Association and Interaction Between Organophosphorus Pesticide Exposure and Insulin Resistance in Non-diabetic Adults]. [PDF]
Zhu X +5 more
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