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Mostrando ítems 10321-10330 de 20254
Management of urban solid waste in the two first decades of the XXI century in the city of San José de Cúcuta, Colombia
(Journal of Physics: Conference SeriesReino Unido, 2019-11-19)
The research developed in this study is exploratory, descriptive and the quantitative method, it characterizes the urban solid waste of the ten communes of the city of San José de Cúcuta and compares the results obtained ...
Spray drying encapsulation of citral in sucrose or trehalose matrices : physicochemical and sensory characteristics
(Instituto de Ciencia y Tecnología de los Alimentos (Reino Unido), 2011)
Abstract: The potential of the disaccharide trehalose as carrier for producing spray-dried citral was examined. Some physical and sensory characteristics of citral encapsulated in matrices containing either trehalose or ...
Ultrasonic waves: Bioeffects on yeast cells
(World Scientific Publ Co Pte Ltd, 2012-01-01)
Applications of ultrasound were starting from 1912 with the primary objective the detection of icebergs on prevention of maritime accidents. Algae, fish deaths and destruction were observed in the vicinity of sonar that ...
The effect of high iron doses (fe2+) on the growth of broccoli plants (brassica oleracea var. italica)
(Universidad Nacional de Colombia, Facultad de Agronomía, Centro Editorial, 2014-03-26)
Tests were carried out under greenhouse conditions in Tunja (Colombia) in order to evaluate the effect of Fe2+ toxicity on the growth of broccoli plants. ‘Legacy’ hybrid Brassica oleracea var. Italica plantlets were grown ...
Development of an application for quick comparison of pigments from their colorimetric coordinates
(Universidad Nacional de Colombia Sede Medellín, 2014-04-23)
Pigments production for use in different kinds of industries (paints, cement, fertilizer, glass, etc.) is a booming sector that invoice million worldwide. So, all those applications that increase efficiency and effectiveness ...
Three similarity measures between one-dimensional data sets
(Universidad Nacional de Colombia, 2014-07-09)
Basadas en una distancia intervalar, se dan tres funciones para cuantificarsimilaridades entre conjuntos de datos unidimensionales mediante el uso deestadísticos de primer orden. Se usa la base de datos Glass Identificationpara ...
Impact of the Zn diffusion process at the source side of InXGa1-XAs nTFETs on the analog parameters down to 10 K
(Ieee, 2017-01-01)
In this work, the impact of the Zn diffusion processes in the source and the amount of Indium for InxGa1-xAs nTFET was analyzed, focusing on the basic analog parameters. Three different splits were analyzed: In0.53Ga0.47As ...
Infiltrated spinel-based ceramic (MgAl2O4) for dental application
(2017-01-01)
This work developed a ceramic material for dental application, spinel-base (MgAl2O4), a ceramic material with recognized translucency. Spinel powders were uniaxially pressed at 100 MPa and pre-sintered in order to obtain ...
Network performance of optical parametric amplifiers based on tellurite waveguides
(2017-09-01)
Optical parametric amplifiers (OPA) built on glass waveguides are tuneable devices that may be implemented as part of photonic integrated circuits. In this paper, we investigate the performance of recently proposed tellurite ...
Crystallization and optical properties of CCTO thin films under pressure influence
(Crc Press-taylor & Francis Group, 2012-01-01)
CCTO thin films were deposited on Pt(111)/Ti/SiO2/Si substrates using a chemical (polymeric precursor) and pressure method. The pressure effects on the CCTO thin films were evaluated by XRD, FEG-SEM and optical properties. ...