Michael additions of thiocompounds to α, β-unsaturated carbonyl compounds in aqueous media: stereoselectivity with unambiguous characterization by NMR
摘要：
The reactions of crotonaldehyde (8) with thiophenol (2) and benzalacetone (10) with ethane-1,2-dithi...
doi：
10.1590/S0103-50532008000500013
作 者：
Instituto de Tecnolo...
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Journal of the Brazilian Chemical Society
Lead distribution and isotope signature in bottom sediments of Guama River and Guajara Bay (Belem - Para)
摘要：
Lead analyses in bottom sediments from the hydrographic system of Belem (Para) indicated low content...
doi：
10.1590/S0100-40422012000200004
作 者：
Universidade Federal...
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Química Nova
Simultaneous determination of B-Group vitamins in enriched cookies
摘要：
The objective of this research was to determine the levels of enrichment of vitamins B1, B2, B6 and ...
doi：
10.1590/S0100-40422008000300016
作 者：
Kowalski, Cláudia Ho...
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Química Nova
The manufacture and use of gunpowder in colonial Brazil: the role of alpoim in the first half of the eighteenth century
摘要：
Gunpowder played a significant role in colonial Brazil. This reached a climax in the eighteenth cent...
doi：
10.1590/S0100-40422008000400036
作 者：
Universidade Federal...
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Química Nova
Study of thermal decomposition of a smokelles propellant
摘要：
The thermal decomposition of hydroxyl-terminated polybutadiene (HTPB)/ammonium nitrate (AN) based pr...
doi：
10.1590/S0100-40422008000200021
作 者：
Universidade Presbit...
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Química Nova
The globally harmonised system of classification, labelling and packaging of chemicals (GHS): an introduction to its application in academic teaching and research laboratories
摘要：
The present article provides an overview of the Globally Harmonised System of Classification, Labell...
doi：
10.1590/S0100-40422013000400021
作 者：
Universidade Federal...
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Química Nova
Chemistry without borders: the energy challenges
摘要：
Coal, natural gas and petroleum-based liquid fuels are still the most widely used energy sources in ...
doi：
10.1590/S0100-40422013001000010
作 者：
Guarieiro, Lílian Le...
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Química Nova
Methodology validation for evaluation of the uncertainty in the calibration curves better adjusted for second-degree polynomials
摘要：
The most widespread literature for the evaluation of uncertainty - GUM and Eurachem - does not descr...
doi：
10.1590/S0100-40422009000600041
作 者：
Aguiar, Paula Fernan...
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Química Nova
Electrochromism: basis and application of nanomaterials in development of high performance electrodes
摘要：
This review deals with the basis and novel trends in electrochromism, describing the basic aspects a...
doi：
10.5935/0100-4042.20140112
作 者：
Vichessi, Raquel B.;...
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Química Nova
Electroless deposition of bis(4'-(4-Pyridyl)-2,2':6',2''-terpyridine)iron(II) thiocyanate complex onto carbon nanotubes modified glassy carbon electrode: application to simultaneous determination of ascorbic acid, dopamine and uric acid
摘要：
A glassy carbon (GC) electrode modified by multi-walled carbon nanotubes (MWNTs) and bis(pyterpy)iro...
doi：
10.1590/S0103-50532011000300009
作 者：
Narimani, O;Zanjan U...
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期刊标题：
Journal of the Brazilian Chemical Society
