PRODUCCIÓN EDITORIAL: Envíos recientes
Mostrando ítems 81-100 de 1455
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Integración de la Lógica Difusa a la Dinámica de Sistemas para la selección de terrenos de cultivos agrícolas
La instalación de un sistema agrícola es un proceso complejo que requiere de un conocimiento tanto del tipo de cultivo como de análisis de suelos de tal forma que se puedan obtener los mayores beneficios. Es por esto que ... -
Hydrogen Production from Solar Energy. The Overview in Colombia
Power generation from renewable sources like the sun; represents an opportunity to reduce the emission of greenhouse gases, which are responsible for the acceleration of climate change in recent years. In turn, hydrogen ... -
Method to Calculate the Quantum Efficiency and Spectral Response of Solar Cells by Using LabVIEW
This article presents the classical procedures used to calculate the density of a short circuit spectral current for the base and the transmitter of a solar cell. Afterwards, we calculated its quantum efficiency and ... -
Cauchy’s Problem Linked to Schrödinger’s Non-linear Equation and Parametrically Forced
In this work we deal the local and global wellposedness in the Sobolev spaces H1(R),H2(R) of the Cauchy problem associated to equation, which is a disturbance in the cubic Schrödinger equation and model phenomena that occur ... -
Analysis of the Porphyrin Additive Particle per Light Dynamic Dispersion
Porphyrins are essential compounds involved in a variety of processes,the formation of its aggregates received considerable interest dueto the different optical and electronic applications. The distribution of theparticle ... -
Proposal of a Linear Differential Equation of First Order that Shapes A Mixture Problem: Mobilization Difficulty among Representation Records and Natural and Algebraic Language
Although the notion of differential equation is present in fields such as mathematics and engineering , understanding by students and some teachers has been limited due to the algebraic approach that has focused teaching ... -
Centrales fotovoltaicas: contexto colombiano frente a latinoamérica continental de habla hispana
Este artículo propone un análisis del sector fotovoltaico de cada uno de los países de habla hispana de América continental, haciendo un fragmento en regiones; Centro América y Sur América respectivamente. El crecimiento ... -
Industrial Maintenance Engineering and Knowledge Management. Improvement in Business Efficiency
This article demonstrates the strategic level involving managementof knowledge in industrial maintenance engineering for businesseswith physical assets. The peculiarities that occur normally in this type ofbasic activity ... -
Physicochemical Characterization of the mo/cuins2/zn(o,oh)s/zno System by Using Photoelectron Spectroscopy XPS and AES
Volume and surface spectroscopy techniques are reliable analytical methods to characterize thin films of different materials. This paper presents results related to the composition of the absorbing film (CuInS2) and the ... -
Design of Tools that Promote Math Learning by Using Mathematica 10
This article presents the development and progress of the project “Design and Implementation of Virtual and Dynamic Objects when Learning Math”. This project is part of a series of programs that search for enhancing of ... -
Fabricación de películas delgadas de TiO2 utilizando el método Doctor Blade y Spin Coating
Los recubrimientos de TiO2 son uno de los materiales más investigados a nivel mundial debido a sus diversas aplicaciones. En este trabajo se fabricaron y caracterizaron películas de TiO2 utilizando el método de Doctor Blade ... -
Metabolitos aislados de raputia heptaphylla y esenbeckia alata (rutaceae) y síntesis de precursores de análogos de alcaloides quinolínicos
Abstract. Previous studies on the Esenbeckia alata and Raputia heptaphylla,both species belonging to the Rutaceae family, have shownimportant results with respect to their chemistry. These species havesecondary metabolites ... -
Productivity Behavior in a Cluster of Plastic Companies Established in Bogotá D.C. and Dedicated to the Manufacture of Containers, Packing, and Packaging from 2003 to 2009
This article indicates the productivity status in the plastic cluster sector in the city of Bogotá, under the terms set by the production function of Cobb-Douglas in order to establish the related points between a specific ... -
Study on the Maintenance Costs of Military Helicopters by Using ABC Costing
According to information provided by the Colombian Air Force and to investigations on helicopter maintenance, it is possible to highlight control and activity classification mechanisms. This is developed when incorporating ... -
Evaluating the Change of Carbon Dioxide Concentration in a Gas Stream by Using Chlorella Vulgaris
Chlorella vulgaris is 38% efficient in removing the carbon dioxide that is present in a gas stream. This study was based on experiments carried out with species of microalgae native from Colombia to be used in industrial ... -
Modeling of the Stump/Socket Junction Mechanical Behavior in Lower-Limb Amputees
It was possible to determine the behavior of the stump/socket junction in a transtibial amputation by using the finite element method. The area of interest includes the skin, the socket, and the bone as elements in contact. ... -
Simultaneous determination of Cu, Zn and Sn by using anodic stripping voltammetry film electrode Bismuth
It was shown the possibility to determine simultaneously the concentration of Zn and Cu in aqueous solution by Anodic Stripping Voltammetry Square Wave (SWASV) by in situ formation of a bismuth film electrode (BiFE) on a ... -
XPS study for CZTS thin films growth by PVD co-evaporation method
This study shows the preparation of different Cu2ZnSnS4 thin films, following the co-evaporation route of metals (Cu, Sn and Zn Zn) in sulfur atmosphere, in three steps sulfide formation. The best results were acquired by ... -
Chemical Characterization of the Essential Oil and Preliminary Identification of Secondary Metabolites in Leaves Belonging to the Raputia Heptaphylla (Rutaceae) Species
In order to determine the chemical composition of the essential oil of leaves belonging to the R. heptaphylla species (Rutaceae family) and to search for the preliminary presence of some secondary metabolites existing in ... -
Design of a Bench-Scale Airlift Photobioreactor
En este trabajo se evaluó un Fotobiorreactor tipo Airlift (FBR) a escala banco para el cultivo y generación de biomasa microalgal. El proceso de evaluación se desarrolló en diferentes etapas desde el análisis de variables ...
