Browsing by Title Artículos de revistas
Now showing items 1732-1751 of 2801
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(Microextraction Techniques, 2014)A novel extraction approach was developed based on rotating-disk sorptive extraction (RDSE). In this approach the rotating-disk extraction device consists of a Teflon disk, with a cavity that is loaded with a commercial ...
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(TAYLOR & FRANCIS LTD, 1996-01)A synthetic route has been developed to a new series of homo- and co-polysiloxanes with a terminal chiral 2-(S)-butyl fragment attached to the mesogenic biphenyl core via the ketone binding group, >C=O. The synthesis, ...
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(Magnolia Press, 2015)
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(MARCEL DEKKER INC, 2001)A method that allows the synthesis of 4 different heterocyclic systems of fused aryl oxazoles, i.e., naphtho[1,2-d], naphtho[2,1-d], naphtho[2,3-d], and benzo[d]oxazoles in reasonable yield is del scribed. This method ...
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(Elsevier B.V., 2020)
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(Elsevier Ltd, 2008-07)Hybrid compounds containing hydrazones and benzofuroxan pharmacophores were designed as potential Trypanosoma cruzi-enzyme inhibitors. The majority of the designed compounds was successfully synthesized and biologically ...
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(SOCIEDAD CHILENA DE QUIMICA, 2000-12)A new vector (V-c) is proposal for structure the topological index of H. P. Schultz (2-MTI). This vector contain elements that correspond to the electron charge density soported on the carbon atoms of the molecule and ...
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(Academic Press Inc., 2017)© 2016 Elsevier Inc.DNA staining in gels has historically been carried out using silver staining and fluorescent dyes like ethidium bromide and SYBR Green I (SGI). Using fluorescent dyes allows recovery of the analyte, but ...
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(Springer, 2018)Here, we reveal a different way of doing the voltammetric experiments that considers the electroactive species packaged in the electrodic phase instead of dissolved in solution. In this way, it is possible to obtain ...
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Ni/Ni oxides nanoparticles with potential biomedical applications obtained by displacement of a ... (2008)A new synthesis and stabilization method was developed for paramagnetic nanoparticles composed of nickel and nickel oxides. Nickel/nickel oxides nanoparticles were synthesized by a method based on ligand displacement of ...
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(Royal Soc Chemistry, 2015)In this study, we are reporting the synthesis and characterization of nanocomposites obtained from the direct reduction of nickel(II) salts on matrices of polyethylene (Pe) and chitosan (Ch) in the presence of serine ...
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(Elsevier, 2020)Nicosulfuron sorption/desorption kinetics were studied through batch sorption studies in ten volcanic ash-derived Andisol and Ultisol soils with acidic pH and variable surface charge. Two different kinetic models were used ...
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(ELSEVIER SCIENCE SA, 2005-10-31)The ability to generate singlet molecular oxygen, O-2((1)Delta(g)), and the scavenging activity of two well-known 1,4-dihydropyridines (1,4-DHPs) such as nifedipine (1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-3,5-pyridin ...
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(1989)A method for the differential-pulse polarographic determination of nifedipine has been developed, based on the electrochemistry of the aromatic nitro group in the drug. Polarography has also been used in studies of the ...
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(CAMBRIDGE UNIV PRESS, 2002-10-01)The hypothesis that nitric oxide plays a key role in the regulation of adrenal blood flow and plasma concentrations of cortisol and catecholamines under basal and hypoxaemic conditions in the llama fetus was tested. At ...
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(ELSEVIER SCIENCE INC, 2001-06)The fetal llama (Lama glama; a species adapted to live in chronic hypoxia in the highlands of the Andes) did not increase cerebral blood flow and reduce the brain oxygen uptake during hypoxemia. Although nitric oxide (NO) ...
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(1997)A series of nitro aryl 1,4-dihydropyridine derivatives produced inhibition of both cell growth and oxygen consumption on Tulahuen and LQ strains, and clone Dm 28c of epimastigotes of Trypanosoma cruzi. Nicardipine was found ...
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(Elsevier, 1995)The cyclic voltammetric (CV) behaviour of nifurtimox was studied. The addition of aprotic solvent (DMF) to nifurtimox in an aqueous citrate buffer system was examined. Qualitatively this results in separation of the initial ...
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(ELSEVIER SCIENCE SA, 2006-09)Three new nitrofuryl substituted 1,4-dihydropyridine derivatives were electrochemically tested in the scope of newly found compounds useful as chemotherapeutic alternative to the Chagas' disease. All the compounds were ...
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(PERGAMON-ELSEVIER SCIENCE, 2002-09-25)We have studied the electrochemical reduction of some nitroimidazoles such as megazol(2-amino-5-(1-methyl-5-nitro-2-imidazolyl)-1,3,4-thiadiazol, CAS 19622-55-0) and two related derivatives in aprotic media (100% DMF, 0.1 ...
