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Now showing items 21-30 of 31
Oxidation products of hyperforin from Hypericum perforatum
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
The isolation of two oxidation products of hyperforin from the aerial parts of Hypericum perforatum and their structure determination by means of 2D NMR methods is reported. The products had the same 1-(2-methyl-1-oxopro ...
Higher environmental temperature potentiates cataleptic effect of fentanyl in rats
(Japanese Pharmacological Soc, Kyoto, 1998)
The influence of higher environmental temperature (HET=30+/-1 degrees C) on fentanyl-induced behavior was studied in unrestrained rats. Subacute exposure (3 days) of rats to HET significantly (P lt 0.01) increased the ...
Regioselective synthesis of novel ethyl Z- and E-2-alkylidene-4-oxothiazolidine-5-acetate derivatives
(Serbian Chemical Soc, Belgrade, 1998)
The syntheses of the title compounds containing an exocyclic double bond of exclusively the Z-configuration, via the regioselective base catalyzed reaction of the nitrile precursors possessing an acidic alpha-hydrogen with ...
Carbonate, oxalato and malonato bridged Cu(II) and Co(II) complexes with an octaazamacrocyclic ligand
(Serbian Chemical Soc, Belgrade, 1998)
Four new Cu(II) and Co(II) complexes having an octaazamacrocyclic ligand derived from cyclam, N,N'N,",N'''-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane, with either an mu-carbonato, oxalato or malonato as ...
Mixed cobalt(III) complexes with S-tyrosine and 1,3-diaminopropane
(Gordon Breach Sci Publ Ltd, Reading, 1998)
Four out of six theoretically possible isomers of the (1,3-diaminopropane)bis(S-tyrosinato)cobalt(III) complex, having the cis(O) configuration, were isolated, and the trans(O) isomer was only defined in the eluate. The ...
Preparation and characterization of facial and meridional isomers of UNS-CIS-(ethylenediamine-N,N '-di-3-propionato)(glycinato)cobalt(III) semihydrate
(Gordon Breach Sci Publ Ltd, Reading, 1998)
Both theoretically possible geometrical isomers, facial and meridional, of uns-cis(ethylenediamine-N,N'-di-3-propionato)(glycinato)cobalt(III) semi hydrate have been prepared by reaction of sodium uns-cis-(ethylenediamine-N, ...
Cu(II), Ni(II) and Fe(III) complexes with 2 ',2 '''-(2,6-pyridindiyldiethylidene)-dioxamohydrazide in a monoanionic form. The crystal structure of aqua-2 ',2 '''-(2,6-pyridindiyldiethylidene)-dioxamohydrazidecopper(II) perchlorate
(Pergamon-Elsevier Science Ltd, Oxford, 1998)
Starting from Cu(II) and Ni(II) perchlorate and Fe(III) chloride in the presence of 2,6-diacetylpyridine (dap) and semioxamazide (sox), the [Cu(Hdapsox)H2O]ClO4 (I), [Ni(Hdapsox)(MeOH)(2)]ClO4 (II) and [Fe(Hdapsox)Cl-2]. ...
Different serum insulin-like growth factor-1 (IGF-1) binding characteristics accompany reduced growth associated with low thyroid hormone and/or low total IGF-1 status in young pigs
(Veterinary Faculty, Belgrade, 1998)
Serum IGF-I binding patterns were determined for 3-month-old pigs exhibiting a wide range of total IGF-I and thyroid hormone (TH) concentrations. Both variables positively correlated with their growth No differences in ...
Monitoring and evaluating the process and results of chemistry teaching by different types of tests / Praćenje i procenjivanje procesa i rezultati nastave hemije kroz različite tipove testova
(Zbornik Instituta za pedagoška istraživanja, 1998)
The paper presents a number of different types of tests used for testing knowledge of chemistry as well the results of their administration in school. Tests differ in terms of the type of tasks: (a) a test containing ...
Changes of isoenzymes of serum N-acetyl-beta-glucosaminidase in relation to different types of diabetes
(Academic Press Aust, Marrickville, 1998)
The activity of the isoenzymes of N-acetyl-beta-D-glucosaminidase (NAG, EC 3.2.1.30) is determined in the serum of insulin-dependent (IDDM) and non insulin-dependent diabetics (NIDDM) with or without diabetic complications. ...