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Mostrando ítems 2201-2210 de 5354
Práctica de laboratorio para la enseñanza de la Química Inorgánica de licenciatura: Síntesis y caracterización de polímeros de coordinación cristalinos (MOFs)
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2017)
En el presente trabajo se describe un experimento de laboratorio para la síntesis y caracterización de un compuesto de coordinación conocido como MOF (metal-organic framework). En la síntesis se integran conocimientos de ...
Surface characterization of feldspathic ceramic using ATR FT-IR and ellipsometry after various silanization protocols
(Elsevier B.V., 2012-02-01)
Objectives. This study characterized the feldspathic ceramic surfaces after various silanization protocols.Methods. Ceramic bars (2 mm x 4 mm x 10 mm) (N = 18) of feldpathic ceramic (VM7, VITA Zahnfabrik) were manufactured ...
Estudos de separação de lignina do licor negro kraft em diferentes condições experimentais: caracterização e fracionamento
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência dos Materiais - PPGCM-SoCâmpus Sorocaba, 2016-04-19)
The processes of separation and isolation of Kraft lignin obtained have been insufficiently resear ched, since much of the lignin of liqueurs obtained industrially is burned for energy recovery ...
Estudo de catalisadores bimetálicos de platina ou paládio e cobre suportados em céria para a reação de PROX-CO
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQCâmpus São Carlos, 2016-10-13)
In the present work, catalysts were prepared xCuO / CeO2 (x = 1.0 and 3.0% by mass)
doped with Pt or Pd for application in the preferred oxidation reaction of carbon
monoxide, also known as PROX-CO reaction. The catalysts, ...
Géis superabsorventes de propionato acetato de celulose e acetato de celulose: síntese, caracterização e liberação controlada de pesticida
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Ciência dos Materiais - PPGCM-So, 2011-12-16)
Hydrogels derived from cellulose acetate propionate (CAP) and cellulose acetate (CA) were synthesized with the cross-linking agents PMDA (Pyromellitic Dianhydride) and BTDA (Dianhydride 3, 3 ', 4, 4' Benzophenone ...
Desenvolvimento e caracterização de filmes poliméricos de amido de milho com incorporação de fibras de bagaço de cevada
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Ciência dos Materiais - PPGCM-SoCâmpus Sorocaba, 2020-03-25)
Interest in the use of starch for biodegradable films is growing due to being a natural, renewable, abundant and low cost source. However, starch films generally have low values of mechanical properties. Thus, this work ...
Análisis geoestadístico de datos funcionales de temperatura del aire en la provincia de Chimborazo
(Escuela Superior Politécnica de Chimborazo, 2020-02-10)
The present titling work had as aim to estimate the air temperature in unsampled sites of the Chimborazo province, period 2014-2017 through the geostatistics analysis of functional data considering the 11 weather stations ...
Implementación de un sistema automatizado de análisis vibracional para el mantenimiento predictivo en motores eléctricos.
(Escuela Superior Politécnica de Chimborazo, 2019-12-06)
The objective of this work was to implement an automated system of vibrational analysis as a diagnostic tool for predictive maintenance in electric motors through signal processing using a test bench. This system allows ...
Thermal and structural modification in transparent and magnetic germanoborate glasses induced by Gd2O3
(2020-10-01)
A series of new transparent and magnetic germanoborate glasses in the system (100-x)[60GeO2–25B2O3–10Na2O–4Al2O3–1PbO] – (x) Gd2O3, with x = 0, 1, 2, 5, 10, 15 and 20 mol%, was prepared and studied with respect to their ...
Using magnetic nanoparticles/MIP-based electrochemical sensor for quantification of tetracycline in milk samples
(2021-11-01)
This paper reports the development of a biomimetic sensor and its application for the determination of tetracycline antibiotics. Tetracycline is an extremely vital antibiotic usually used for the treatment of people and ...