The interaction solid-solution is characterized by adsorption isotherms analysis, at 298 K and pH 7, 9 and 11 in order to evaluate the adsorption value above and below that of the catechol pKa. The adsorption capacity of carbons increases when the solution pH decreases. The retained amount ...
摘要: 内容分析 关键词云 关键词热度 相关文献总数 (/次) (/年) 文献信息 篇名Chemometric study of the retention mechanism on butyl column:effect and relation of pH and pKa 来源期刊色谱学科化学 关键词 年,卷(期)2015,(12)所属期刊栏目研究论文 ...
A structure–activity relationship is a tool that determines the relationship between the molecular structure of the compound and its bioactivity. For such analyses, quantitative structure–activity relationship (QSAR) modeling has been extensively utilized in medical sciences and toxicology (Nongonierma ...
Detailed analyses of the three phosphorus ligand parameters commonly used as gauges of electronic effects in organophosphorus metal chemistry, pKa, Σχ i and Σσph, are presented in terms of their use as σ measures in M-P bonds. The Tolman ligand parameter, Σχ i, is shown to contain ...
Yongquan Yu1,2, Meilin Wang1,2, Meghan Cromie4, Weimin Gao4 & Shou-Lin Wang1,2 The association between endocrine disrupting chemicals (EDCs) and human sperm quality is controversial due to the inconsistent literature findings, therefore, a systematic review with meta- analysis was ...
From these experiments, it is possible to gain completely novel molecular insight into how various classes of penetration enhancers influence the balance between mobile and rigid components in the very same sample of intact SC. The added compounds are chosen to represent different classes of compounds...
Another se- lected paper studied BF values below 5 M, but there were no studies done at BF values between 383 and 1761 nM, so that the true threshold could not be evaluated (17). Calculations. BF levels were calculated from a model that assumes independent binding of UCB to two ...
There was a striking difference in incidence of MT1 positivity and staining intensity between carcinomas in African American (AA) and Caucasian (C) women. The AA showed a higher incidence of MT1 negative tumors (41/84 = 48.8 % in AA, 6/51 = 11.8 % in C) and a lower average WI. ...
the interaction between chitosan (positively charged) and mucin (negatively charged) leads to an increase in contact time between the formulation and the absorptive surface [61]. Moreover, chitosan has amino group with the pKa of ~ 6.5 and has better permeation-enhancing properties, promoting...
GDNF family GDNF, neurturin (NRTN), artemin, persephinendothelins (Et Etand Et peptides acting via G﹑roteinヽoupled receptorsprotein kinase A (PKA) interactions between Retor Ednrb﹎ediating signallinghedgehog signalling systembone morphogenetic proteins (BMPs)netrin/DCC signalling and submucosal...