Results 1 to 10 of about 3,226 (122)
Inhibitory capacity of extracts and main constituents of hop flowers
Background Hops (Humulus lupulus Linn.) produce flowers that are used on an industrial scale to impart sensory properties to beer and have some pharmacologic properties already published in the literature.
Francisco Mateus Gomes do Nascimento +7 more
doaj +1 more source
La Espectrometría de Fluorescencia de Rayos X, es una técnica que permite obtener los porcentajes de la química inorgánica presente en los carbones del flanco occidental del sinclinal Checua - Lenguazaque. Con base en los resultados obtenidos, es posible
David Alejandro Herrera Carvajal +2 more
doaj +1 more source
Polystyrene latex spheres were obtained by free-emulsifier polymerization of styrene. Suspension was characterized by Photon Correlation Spectroscopy (PCS) and Transmission Electron Microscopy (TEM) and were observed to be monodisperse with sizes around ...
Mateus Geraldo Schiavetto +3 more
doaj +1 more source
Las estrategias didácticas que se aplican en el proceso de enseñanza aprendizaje son mecanismos que permiten que los estudiantes aprovechen el conocimiento impartido por el docente y demuestren dominio absoluto, más aún, en tiempos de pandemia cuando ...
Karina Isabel Lara-Carrillo +1 more
doaj +1 more source
Influence of the pH in the stability of the silver coacervate by vitreous precursors
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
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
Cp2TiCl is a useful reagent to teach multidisciplinary chemistry
Cp2TiCl es un único reactivo de transferencia de electrones que ha contribuido en varios campos del conocimiento científico, como la química orgánica, inorgánica, ecológica y analítica.
Antonio Rosales Martínez
doaj +1 more source
Gallium-doped zinc oxide prepared by the Pechini method
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
Una opción para la investigación en empresas. Maestría en Química Inorgánica de la república de Cuba
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
doaj +1 more source
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

