Results 21 to 30 of about 143,778 (251)
Influence of the pH in the stability of the silver coacervate by vitreous precursors
Eclética Química, 2018 In this work, using coacervation process, the influence of the pH in the stability of the coacervates of the NaPO3/AgNO3/H2O system was studied. The coacervate domain was established using different concentrations of NaPO3 and AgNO3 and the influence of ...
Bianca Montanari +4 more
doaj +1 more source
A new curriculum leading to the formation of a licenciate in Chemistry at the University of Brasília [PDF]
, 1997 Este artigo apresenta a concepção, princípios e a estrutura acadêmica do curso noturno de licenciatura em química, na Universidade de Brasília. O currículo é seguido desde o início de 1993.
Gauche, Ricardo +2 more
core +1 more source
Gallium-doped zinc oxide prepared by the Pechini method
Eclética Química, 2018 Gallium-doped zinc oxide (ZnO:Ga) was prepared by the Pechini method from zinc citrate and gallium hydroxide. By this method, it is possible to synthesize crystalline ZnO:Ga by firing the polymeric precursor in air at 900ºC for four hours.
Agnaldo de Souza Gonçalves +2 more
doaj +1 more source
Reporting an experience : recovering and recording residues of teaching laboratories of Chemical Institute of the Federal University of Rio Grande do Sul. [PDF]
, 2001 An experience aiming to promote a residue interchange and recovery between the teaching laboratories of the Chemistry Institute of this University is described. At the present, several residues interchange have already appeared as advantageous.
Amaral, Suzana Trindade +12 more
core +3 more sources
Eclética Química, 2018 Este trabalho contempla a síntese e caracterização espectroscópica de dois compostos carbonílicos heterometálicos do tipo [Fe(CO) 3 (m-CS 2 )(PPh 3 )(CuX)], X = Cl, ClO 4 .
Teresa Kazuko Muraoka +5 more
doaj +1 more source
Eclética Química, 2018 Ciclopaladados diméricos do tipo [Pd(dmba)(m-X)] 2 (dmba = N,N-dimetilbenzilamina; X = Cl, N 3 , NCO) reagem com tiouréia (tu), à temperatura ambiente, resultando espécies mononucleares do tipo [Pd(dmba)(X)(tu)].
A. C. Moro, A. E. Mauro, S. R. Ananias
doaj +1 more source
A 3D Printer Guide for the Development and Application of Electrochemical Cells and Devices
Frontiers in Chemistry, 2021 3D printing is a type of additive manufacturing (AM), a technology that is on the rise and works by building parts in three dimensions by the deposit of raw material layer upon layer.
Ana Luisa Silva +4 more
doaj +1 more source
XXII Congreso Argentino de Fisicoquímica y Química Inorgánica (XXII CAFQI)
, 2021 Recopilación de resúmenes de los trabajos presentados en el XXII Congreso Argentino de Fisicoquímica y Química Inorgánica (XXII CAFQI), llevado a cabo en modalidad virtual los días 19, 21, 23, 27 y 29 de abril de 2021 en la Universidad Nacional de La ...
semanticscholar +1 more source
Studies of some effects on the preparation of spherical silica particles from reverse microemulsion
Eclética Química, 2018 Silica spherical particles were prepared in reverse microemulsion from sodium silicate solution precursor. Particle shape and size changes were investigated in function of reactants addition order, sodium silicate solution concentration and water to ...
Juliana Flor +2 more
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MAGNETIC NANOPARTICLES: THE COBALT
Eclética Química, 2018 The development of nanoparticles has been intensively pursued because of their technological importance. The magnetic nanoparticulate materials exhibit a series of interesting properties between which are mentioned the electrical, optical, magnetic and ...
Vagner Sargentelli, Antonio P. Ferreira
doaj +1 more source