Development and validation of a method for the analysis of tetracyclines in chicken-muscle by liquid chromatography-electrospray-mass spectrometry in tandem (LC-ESI-MS/MS)

期刊论文
摘要:
A LC-ESI-MS/MS method was developed and validated according to the European Union decision 2002/657/...
doi:
10.1590/S0100-40422011000100009
作 者:
Universidade Federal...
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Química Nova

Temperature-dependent benzoic acid elimination mechanisms in pyrolysis of (-)-cocaine

期刊论文
摘要:
The thermal elimination of benzoic acid from (-)-cocaine is shown to be temperature-dependent. In th...
doi:
10.1590/S0100-40422011000400004
作 者:
Novák, Michal;Utrech...
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Química Nova

Chemistry teacher formation: a multivariate perspective applied to public high schools in the state of Goiás, Brazil

期刊论文
摘要:
This paper presents a multivariate statistical analysis as a valuable tool for educational managemen...
doi:
10.1590/S0100-40422011000900031
作 者:
Universidade Federal...
作者机构:
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期刊标题:
Química Nova

Theoretical and experimental crystal field theory treatment in the inorganic synthesis course

期刊论文
摘要:
We describe herein the synthesis and characterization of the complexes KNiF3, [Ni(en)3]I2, [Ni(en)3]...
doi:
10.1590/S0100-40422011001000017
作 者:
Baibich, Ione M;Cons...
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Química Nova

Discursive activity in the training of teachers chemistry: a collective construction of the dialogue

期刊论文
摘要:
This research was conducted in a research network in teaching science/chemistry, as an alternative f...
doi:
10.1590/S0100-40422011000700030
作 者:
Universidade Federal...
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Química Nova

Evaluate of advanced oxidative process by Fenton reagent under optimized conditions for landfill leachate treatment of with emphasis on collective parameters and characterization of sludge generated

期刊论文
摘要:
An alternative for landfill leachate treatment are advanced oxidation processes by Fenton's reagent ...
doi:
10.1590/S0100-40422011000800014
作 者:
Moravia, Wagner Guad...
作者机构:
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期刊标题:
Química Nova

Phenolic compounds from Sidastrum micranthum (A. St.-Hil.) fryxell and evaluation of acacetin and 7,4'-Di-O-methylisoscutellarein as motulator of bacterial drug resistence

期刊论文
摘要:
From the aerial parts of Sidastrum micranthum (A. St.-Hil.) Fryxell (Malvaceae) were isolated m-meth...
doi:
10.1590/S0100-40422011000800016
作 者:
Agra, Maria de Fátim...
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Química Nova

Evaluation of effects to the therapeutical ultrasound on caffeine and the release in vertical diffusion systems

期刊论文
摘要:
Currently, the physiotherapists use the phonoforesis, which consists in the therapeutical ultrasound...
doi:
10.1590/S0100-40422011000900011
作 者:
Rempel, Claudete;Tas...
作者机构:
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Química Nova

Computational validation of composite methods in the study of molecular properties

期刊论文
摘要:
Composite methods using ONIOM and different basis sets have been used to calculate proton and electr...
doi:
10.1590/S0100-40422011000500024
作 者:
Morgon, Nelson H.;He...
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Química Nova

Nitrate occluded in zeolite 4A: absorption and leaching of nitrogen in the cultivation of corn

期刊论文
摘要:
Systematic studies were undertaken in the intra zeolitic media to better understand the ability of z...
doi:
10.1590/S0100-40422011000900015
作 者:
Romero, Ricardo Espí...
作者机构:
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期刊标题:
Química Nova
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