Results 21 to 30 of about 132,429 (302)

An investigation of the role the donor moiety plays in modulating the efficiency of ‘donor-π-acceptor-π-acceptor’ organic DSSCs [PDF]

, 2017
Three ‘D-π-A-π-A’ based dyes have been synthesized featuring MeO-, MeS- and Me2N- as donor residues and benzothiadiazole and cyanoacrylic acid residues as acceptor units. UV–vis spectroscopy, solution electrochemistry and DFT modelling indicated that the
Ahn, Sungwoo, Baek, Myung Hoon, Cooke, Graeme, Hong, Jongin, Park, Kwang-Won, Serrano, Luis A., Wiles, Alan A.   +6 more
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Fast Counter Current Chromatography of -Butanolic Fraction from (Asteraceae)

Natural Product Communications, 2009
Phenolic derivatives such as quinones, acid-phenols and flavonoids were successfully isolated from a n-butanolic fraction of Senecio giganteus Desf.
Nadjet Mezache, Séverine Derbré, Salah Akkal, Hocine Laouer, Denis Séraphin, Pascal Richomme   +5 more
doaj   +1 more source

Steroid estrogen determination in sediment and sewage sludge: A critique of chromatographic / mass spectrometry methods incorporating a case study in method development [PDF]

, 2004
Current analytical methods for determining steroids in sewage sludge and sediment are reviewed and experimental data comparing LC/MS ESI and GC/MS quantification of extracts from these matrices is presented.
Avcioglu, E, Gomes, RL, Lester, JN, Scrimshaw, MD   +3 more
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Chiral Separations in Preparative Scale: A Medicinal Chemistry Point of View

Molecules, 2020
Enantiomeric separation is a key step in the development of a new chiral drug. Preparative liquid chromatography (LC) continues to be the technique of choice either during the drug discovery process, to achieve a few milligrams, or to a scale-up during ...
Madalena M.M. Pinto, Carla Fernandes, Maria E. Tiritan   +2 more
doaj   +1 more source

Differential effects of dietary supplements on metabolomic profile of smokers versus non-smokers. [PDF]

, 2012
BackgroundCigarette smoking is well-known to associate with accelerated skin aging as well as cardiovascular disease and lung cancer, in large part due to oxidative stress.
Beebe, Kirk D, Chang, Anne Lynn S, Cheng, Michelle Y, Chun, Kimberly A, Gorell, Emily S, Kern, Dale G, Knaggs, Helen E, Munoz, Claudia A, Spitale, Robert C, Wood, Steve M, Wulff, Jacob   +10 more
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Multianalyte LC-MS-based methods in doping control: what are the implications for doping athletes? [PDF]

, 2016
Over the last 50 years, the list of doping substances and methods has been progressively expanding, being regularly reviewed by the international antidoping authorities (formerly the Medical Commission of the International Olympic Committee, and ...
Botre', Francesco, de la Torre, Xavier, Mazzarino, Monica   +2 more
core   +1 more source

Preparative separation and purification of deoxyschizandrin from Schisandrae Sphenantherae Fructus by high-speed counter-current chromatography

Journal of Pharmaceutical Analysis, 2013
A high-speed counter-current chromatography (HSCCC) method was successfully developed for the preparative separation and purification of deoxyschizandrin from Schisandrae Sphenantherae Fructus in one step.
Xin-Ying Li, Mei Yang, Jie-Yun Huang, Xiao-Xue Yu, Min-Qian Zhao, Zhi-Kun Liang, Zhi-Sheng Xie, Xin-Jun Xu   +7 more
doaj   +1 more source

Substrate-Specific Inhibition Constants for Phospholipase A2 Acting on Unique Phospholipid Substrates in Mixed Micelles and Membranes Using Lipidomics. [PDF]

, 2019
Assaying lipolytic enzymes is extremely challenging because they act on water-insoluble lipid substrates, which are normally components of micelles, vesicles, and cellular membranes.
Armando, Aaron, Dennis, Edward A, Mouchlis, Varnavas D   +2 more
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Preparative separation of polyphenols from artichoke by polyamide column chromatography and high-speed counter-current chromatography

Química Nova, 2013
An efficient method for the rapid separation and purification of polyphenols from artichoke by polyamide column chromatography in combination with high-speed counter-current chromatography (HSCCC) was successfully built.
Xikai Shu, Mei Wang, Daicheng Liu, Daijie Wang, Xiaojing Lin, Jianhua Liu, Xiao Wang, Luqi Huang   +7 more
doaj   +1 more source

Counter-current chromatography for the separation of terpenoids: A comprehensive review with respect to the solvent systems employed [PDF]

, 2014
Copyright @ 2014 The Authors.This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.Natural ...
A Berthod, A Berthod, A Koch, A Li, A Marston, A Maurya, A Peng, A Sun, ALM Nasser, AM Martin, AS Engelberth, AS Graham, B Diallo, B Diallo, B Medhi, B Pinel, BCB dos Santos, BK Gosse, C Zhao, CR Cheng, D Agostinho, D Du, D Fisher, D Grancher, D Wang, D Wang, D Wu, D Zhao, E Mudge, F Chen, F Chen, F Chen, F Fullas, F Gutiérrez, F He, F Oka, F Qiu, F Xiang, F Yang, G Tian, G Tian, G Wang, G Yan, GD Brown, GG Rocha, H Knapp, H Wu, H Ye, H Ye, H Zhang, HB Li, HB Li, HB Li, HB Li, HT Lu, I Slacanin, IA Sutherland, IA Sutherland, IA Sutherland, Ian Garrard, IJ Garrard, IJ Garrard, IJ Garrard, IJ Ha, J Hu, J Huang, J Liang, J Liu, J Ma, J Peng, J Wang, J Wang, J Wang, J Xie, J Xie, J Xu, J Yan, JCT Silva, JH Lee, JP Fan, JT Fischedick, JT Fischedick, JT Fischedick, K Skalicka-Woźniak, KD Yoon, KD Yoon, Krystyna Skalicka-Woźniak, KY Yoo, M Gu, M Gu, M Hamzaoui, M Lechtenberg, M Liu, M Puertas Mejia, MP Gasper, N Acton, N Fischer, N Frighetto, O Shehzad, O Shehzad, O Shehzad, O Shirota, O Shirota, P Hewitson, PA Souza De, PK Ajikumar, Q Chen, Q Du, Q Du, Q Du, Q Du, Q Du, Q Du, Q Du, QB Han, QB Han, QB Han, R Aman, R Graziose, R Roscher, R Tsao, RTS Frighetto, S Baldermann, S Baldermann, S He, S Liu, S Shi, S Wu, S Wu, S Yao, S Yao, SM Kim, SS Cicek, SY Shi, T Abbott, VF Rodrigues, VGP Severino, VP da Silva, W He, X Cao, X Han, X Qi, X Shi, X Xiao, X Xin, XC Li, XH Xiao, XY Huang, Y Cheng, Y Cheng, Y Geng, Y Ikai, Y Ito, Y Ito, Y Ito, Y Ito, Y Jiang, Y Lu, Y Lu, Y Ma, Y Wang, Y Wei, Y Wei, Y Wei, Y Yang, Y Yang, Y Yuan, Y Zhang, Y Zhao, YW Ha, YW Ha, YY Dang, Z Jiang   +172 more
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