Browsing by Issue Date Artículos de revistas
Now showing items 881-900 of 2801
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(ENDOCRINE SOC, 2002-04)The neurotrophin nerve growth factor (NGF) and its two membrane-anchored receptors are expressed in the developing ovary before the organization of the first primordial follicles. In the absence of NGF, the growth of ...
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(GEORG THIEME VERLAG KG, 2002-04)A biologically monitored fractionation of the resinous exudate of Fabiana densa Remy var. ramulosa Wedd. led to the isolation of the two new diterpenes: ent-beyer-15-en-18-O-succinate and ent-beyer-15-en-18-O-oxalate as ...
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(KLUWER ACADEMIC/PLENUM PUBL, 2002-04)Purpose. To characterize the electrochemical behavior of the photodegradation product of nifedipine, i.e., 2,6-dimethyl-4-(2-nitrosophenyl)-3,5-pyridine-carboxylic acid dimethyl ester (NPD) in different electrolytic media. ...
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(WILEY-V C H VERLAG GMBH, 2002-04)Carbon paste electrodes modified with beta-cyclodextrin have been investigated for voltammetric determination of nitrendipine. The immobilization of the beta-cyclodextrin on the carbon paste leads to a modification of the ...
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(ELSEVIER SCIENCE INC, 2002-04-16)The white rot basidiomycete Ceriporiopsis subvermispora secretes the ligninolytic enzymes manganese-dependent peroxidase (MnP) and laccase to the extracellular medium. The promoter region of the laccase gene (Cs-lcsl) ...
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(ELSEVIER SCIENCE BV, 2002-04-26)A computer assisted molecular modeling was used to design molecules having a shape complementary to the active site of glutathione reductase (GR) and trypanothione reductase (TR). The designed 5-nitro compound derivatives. ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2002-05)A rapid analytical approach for determination of polycyclic aromatic hydrocarbons (PAHs) present in real samples of particulate matter (PM10 filters) was investigated, based on the use of water under sub critical conditions, ...
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(ELSEVIER SCIENCE BV, 2002-05-09)Eighty-two amino acid sequences of the catalytic domains of mature endoxylanases belonging to family 11 have been aligned using the programs MATCHBOX and CLUSTAL. The sequences range in length from 175 to 233 residues. The ...
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(ROYAL PHARMACEUTICAL SOC GREAT BRITAIN, 2002-06)Extracts of the whole plant Acaena magellanica (Rosaceae) were assessed for anti-inflammatory and analgesic activity in animal models. At 600 mg kg(-1), the global ethanolic extract (GEE), dichloromethane (DCM) and defatted ...
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(KLUWER ACADEMIC PUBL, 2002-06)A first derivative spectrophotometric method has been developed for the determination of parathion and p-nitrophenol in vegetable tissues. Ethanol was used as solvent for extracting the compounds from the tissues and ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2002-06-01)The development of a new HPLC-UV diode array procedure applied to follow the hydrolytic degradation of two well-known 4-nitrophenyl-1,4-dihydropyridine derivatives, nitrendipine and nisoldipine is reported. Hydrolysis of ...
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(PERGAMON-ELSEVIER SCIENCE, 2002-06-01)The development of a new HPLC-UV diode array procedure applied to follow the hydrolytic degradation of two well-known 4-nitrophenyl-1,4-dihydropyridine derivatives, nitrendipine and nisoldipine is reported. Hydrolysis of ...
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(ELSEVIER SCIENCE SA, 2002-06-27)A Cu(II)-Gd(III) heteronuclear complex with N,N'-ethylene-bis-5-methoxy salicylaldiimine (ems) as ligand has been synthesized. The complex crystallizes in the monoclinic system C2/c space group. The structure consists of ...
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(AOAC INTERNATIONAL, 2002-07)This paper reports a simple and fast method for the simultaneous determination of estradiol (ED) and medroxyprogesterone acetate (MP) in pharmaceutical formulations by second-derivative spectrophotometry. Methanol was used ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2002-08)Changes in N-distribution patterns in volcanic-ash of Chile after deforestation of a primary forest were measured. There is a clear tendency towards the depletion of N linked to high molecular weight fractions (humin, humic ...
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(LIPPINCOTT WILLIAMS & WILKINS, 2002-08)This study investigated whether long-term administration of isoproterenol (ISO) induces differential expression of angiotensin-converting enzyme (ACE) in lung, plasma, and left ventricle (LV) during development of left ...
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(EDICIONES DOYMA S/L, 2002-08)Introduction and objective. Chronic heart failure (CHF) is associated with oxidative stress. Heart transplantation, an important therapeutic alternative in these patients, could reduce oxidative stress by improving cardiac ...
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(AMER CHEMICAL SOC, 2002-08-08)Photoreduction of 3-phenylquinoxalin-2-ones, XNQ, by triethylamine, TEA, gives a metastable semireduced quinoxalin-2-one via an electron-proton-electron transfer, with unit quantum yields at high amine concentrations. ...
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(ELSEVIER SCIENCE, 2002-08-23)We have chosen 4-nitroimidazole (4-NIm) as a prototype of nitroimidazolic compounds in order to carry out an exhaustive cyclic voltammetric study in protic media, 0.1 M Britton-Robinson buffer+0.3 M KCl with ethanol as a ...
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(VERLAG Z NATURFORSCH, 2002-09)Muehlenbeckia hastulata (J. E.Sm.) Johnst. used mainly for its abortive properties was found active for oxytoxic and analgesic activities in a biological activity screening (oxytoxic, analgesic, antimicrobial, cytotoxic ...
