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A quantum chemical study on the formation of phosphorus mononitride
(Elsevier B.V., 2009-09-18)
The chemical mechanism of the (1)PN formation was successfully studied by using the CCSD(T)/6-311++G(3df,3pd) level of theory. The (1)NH(3) + (3)PH and (4)P + NH(3) reaction paths are not energetically favorable to form ...
The Physics and the Chemistry of Michael Faraday to form for citizenship
(2019-08-21)
In this paper we present a teaching-learning strategy based on the life of Faraday to provide knowledge of physics (electromagnetic induction) and chemistry (chemical bonds) and a wakening to citizenship. The strategy ...
Indicators of soil degradation in urban forests: Physical and chemical parameters
(2012-10-15)
The fragmentation of forest habitats in urban areas has aroused increasing interest in recent years according to the growing environmental problems. The fragmentation of theses ecosystems is caused, in general, by the ...
Divulgação científica e nanotecnologia: resultados preliminares de um projeto de extensão sobre as concepções dos estudantes do curso de licenciatura em Física e Química da Unesp/Pres. Prudente
(Universidade Estadual Paulista (Unesp), 2015-09-14)
Nanotechnology is an innovative technology for small scale used in several scientific areas. As results of technological advances, this science is increasingly present in our daily lives. In this way, we have developed an ...
The effect of chloride ions and A. ferrooxidans on the oxidative dissolution of the chalcopyrite evaluated by electrochemical noise analysis (ENA)
(2009-12-28)
It is believed that the dissolution of chalcopyrite (CuFeS2) in acid medium can be accelerated by the addition of Cl- ions, which modify the electrochemical reactions in the leaching system. Electrochemical noise analysis ...
Preparation and physical chemistry characterization of new nanostructured oxides catalysts by spray pyrolysis method for the biodiesel production
(2018-01-01)
In this work were synthesized new catalysts of stoichiometries Sr0.8K0.2TiCu0.10O3, Sr0.7K0.3TiCu0.15O3 and Sr0.5K0.5TiCu0.25O3 by spray pyrolysis method. The synthesis conditions were optimized to obtain single phase ...
Uso da experimentação para motivar o interesse pela química no ensimo médio das escolas de Botucatu
(Universidade Estadual Paulista (Unesp), 2015-09-09)
In this work were tested experiments that approach chemical content taught in high school and that in a next step, will be presented to students from public school. They present visual impact and a rapid response associated ...
Study of Er3+ fluorescence on tellurite glasses containing Ag nanoparticles
(2011-04-12)
Optical characteristics of tellurite glasses containing silver nanoparticles (NPs) and the influence on the emission spectrum of Er 3+ ions were studied. The transitions 4f ↔ 4f from erbium ions, mainly the 4I13/2 → 4I15/2 ...
First-principles Study Of Molecular Point Defects In Ice Ih: Interstitial Vs. Vacancy
(Royal Society of Chemistry, 2007)
First-principles Study Of Bjerrum Defects In Ice Ih: An Analysis Of Formation And Migration Properties
(Royal Society of Chemistry, 2007)