Results 11 to 20 of about 18,052 (169)
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
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Una opción para la investigación en empresas. Maestría en Química Inorgánica de la república de Cuba
Educación Química, 2018 En el trabajo se presenta una breve caracterización del programa nacional de la maestría en Química Inorgánica de la República de Cuba. Mediante ejemplos se demuestra la posibilidad de formar personal calificado en Inorgánica Preparativa y Química ...
Luis Alberto Bello Pauli +2 more
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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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O desempenho acadêmico e o fenômeno da evasão em cursos de graduação da área da saúde [PDF]
, 2016 Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ceilândia, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, 2016.O presente estudo tem como tema central o fenômeno da evasão e a variável desempenho acadêmico nos cursos de ...
Silva, Fernanda Cardoso da
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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
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New Vibrational Information on Simple Amides in Solution: A Case Study on GaCl3-Formamide Complexes
Journal of Spectroscopy, 2020 IR and Raman measurements were carried out for GaCl3-formamide (FA) solutions, and comparisons with the Al3+ and Fe3+ chemistry are presented. Upshifts of both νCO and νCN modes of FA are observed, and analyses of the corresponding bands suggest ...
Anna K. M. S. Gomes, Wagner A. Alves
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HPLC Quantification of Cytotoxic Compounds from Aspergillus niger
Journal of Chemistry, 2017 A high-performance liquid chromatography method was developed and validated for the quantification of the cytotoxic compounds produced by a marine strain of Aspergillus niger.
Paula Karina S. Uchoa +5 more
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Estudio longitudinal sobre la construcción de conceptos Enlace, solubilidad y conductividad
Educación Química, 2018 La finalidad central de este estudio se orienta hacia la búsqueda de las concepciones previas de los estudiantes de licenciatura en Química de la Facultad de Química de la UNAM, acerca de conceptos cuya adquisición resulta indispensable para comprender ...
Ana E. Domínguez +3 more
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Antibacterial and Antioxidant Activities of Ursolic Acid and Derivatives
Molecules, 2014 Ursolic acid, an important bioactive compound, was isolated from ethanol extract of aerial parts of Sambucus australis. In order to develop bioactive ursolic acid derivatives, two semi-synthetic compounds were obtained through modification at C-3.
Patrícia G.G. do Nascimento +7 more
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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
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