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Química Nova
On-line version ISSN 1678-7064


Table of contents
Quím. Nova vol.20 no.6 São Paulo Nov./Dec. 1997


 ·  Crystal structure of N-isopropyl-2-cyano-3(5'-nitrofuryl)acrylamide
Pomés Hernandéz, Ramón; Duque Rodrigues, Julio; Novoa de Armas, Héctor; Toscano, Ruben Alfredo

 ·  Development of a leaching process of manganese concentrate in molten salts
Silva, Maria José de Sousa Ferreira da; Marques, Maria José; Ribeiro Jr, Cláudio Patrício

 ·  Changes of the electrochemical behavior of nickel electrodes in diluted sulfuric acid under different illumination conditions
Vendrame, Zilda Baratto; Gonçalves, Reinaldo Simões

 ·  Infrared estimates of the concentration of the b-o-4 structural unit in lignins of tropical angiosperms
Abreu, Heber dos Santos

 ·  Superorder corniflorae: chemistry, etnopharmacology and pharmacology
Sampaio-Santos, Maria Isabel; Kaplan, Maria Auxiliadora Coelho

 ·  Authenticity control of commercial copaiba oils by high resolution gas chromatography
Veiga Jr., Valdir F.; Patitucci, Maria Lucia; Pinto, Angelo C.

 ·  Chemical modifications of (+)-allo-aromadendrane-10b,14-diol isolated from duguetia glabriuscula r. e. fries (r. e. fries) (annonaceae) and biological evaluation of some obtained derivatives
Lima, Dênis Pires de; Beatriz, Adilson; Ramos, Alexandre Ayoroa; Siqueira, João Máximo de; Oliveira, Celso Corrêa de; Marques, Maria Rita

 ·  Development and characterisation of coatings of Ni-Co and their mixed oxides for oxygen production by alkaline water electrolysis
Machado, Sergio A. S.; Gallani, Simone C.

 ·  The chemistry of the bombacaceae family
Paula, Vanderlúcia F.; Barbosa, Luiz C. A.; Demuner, Antônio J.; Piló-Veloso, Dorila

 ·  Intramolecular reactions as non mimetic models of enzyme catalysis
Gesser, José Carlos; Yunes, Santiago; Clementin, Rosilene M.; Nome, Faruk

 ·  Mechanisation in sample preparation by microwaves: the state-of-the-art
Arruda, Marco Aurélio Zezzi; Santelli, Ricardo Erthal

 ·  Trace elements determination: report on two interlaboratory exercises
Jardim, Wilson F.; Barbosa, Antonio C.; Campos, Reinaldo C.

 ·  Pure enantiomeric substances: the question of chiral drugs
Barreiro, Eliezer J.; Ferreira, Vitor. F.; Costa, Paulo R. R.

 ·  Drugs and chirality: a brief overview
Lima, Vera Lucia Eifler

 ·  Organogels: a new system for lipases immobilization and its application in organic synthesis
Jesus, Paulo Cesar de; João, Jair Juarez; Silva, Pedro Luiz Ferreira da; Burlin, Giovani; Nascimento, Maria da Graça

 Nota técnica
 ·  Construction of cooling systems with an immersion probe
Oliveira, Alfredo Ricardo M. de; Simonelli, Fábio; Marques, Francisco de A.; Santos, Alcindo A. dos; Pereira, Gerson A.; Assenheimer, Oscar

 ·  A new curriculum leading to the formation of a licenciate in chemistry at the university of brasília
Santos, Wildson Luiz P. dos; Gauche, Ricardo; Silva, Roberto Ribeiro da

 Assuntos gerais
 ·  Research and training in medicinal chemistry in south and central american countries and sub-saharan Africa
Monge, Antonio