Candelaria Martínez, Bernardino Ruiz Rosado, Octavio Gallardo López, Felipe Pérez Hernández, Ponciano Martínez Becerra, Ángel Vargas Villamil, Luis
Desde el inicio de la agricultura, hace aproximadamente diez mil años, la humanidad se ha beneficiado de sus productos al satisfacer, con ellos, sus necesidades de alimentación y comercializarlos. Los sistemas de producción agrícola son más organizados y productivos, como resultado del mayor conocimiento sobre agricultura. Sin embargo, la especiali...
Sánchez Cohen, Ignacio Inzunza Ibarra, Marco Antonio Catalán Valencia, Ernesto Alonso González Barrios, José Luis González Cervantes, Guillermo Velásquez Valle, Miguel Ángel
The high variability in space and time of the rainfall patterns, make agriculture in rainfed areas subject to climatic risk. In this situation, the best tool to support decision-making is the hydro-climatic modeling, where the hydrological stochastic processes are considered. In the present study, nested series of algorithms (AA) are used in order ...
Alvarez Pérez, Jorge Hernán
En este documento se presenta una investigación desarrollada en el año 2011-2012 acerca de la aplicación de los videojuegos en el desarrollo de habilidades para la modelación en tecnología, en los temas de electricidad y electrónica, a partir de la construcción de un espacio lúdico que permitiera el trabajo con los videojuegos Liquid Measured donde...
Patiño, P. Rene Da Silva Filho, José Pérez, P. Jorge
At present, the animal production must be performed looking for minimize its negative impact on the environment. Phosphorus is an essential mineral for animal life, therefore it should be offered in quantities appropriate for the animals are unable to meet with the production goals established. However, it is necessary to ensure that the dietary su...
Pinzón Latorre, Andrés
Choosing the material for a building is paramount in the design process as it determines the success of the construction and building work. The architect should be aware of the processes of extraction, transformation, assembly, and function of the materials in order to be able to involve them in their earliest plans. Given the complexity of this pr...
Monteagudo Yllobre, Yendri Hernández Milian, Roberlando González Fernández, Daniel Yunier
The use of multivariate analysis on teaching process is very effective to plan and execute educational actions having into account the variability of student’s characteristics. At the same time, it is important to develop better strategies, methods, procedures and teaching and evaluation means to increase the educational yield of students. So the a...
Sánchez Henao, Claudia Patricia Gómez Grimaldos, Nathalia Andrea Quintero Díaz, Juan Carlos
lavulanic acid (CA) is a b-lactam antibiotic exhibiting potent inhibitory capacity towards b-lactamases. In this paper we assessed the production of CA in four culture media reported in the literature compared to a novel culture medium. The results of lab-scale bioreactor studies were used to establish the optimum glycerol concentration in the sele...
Patiño, P. Rene Silva Filho, José Pérez, P. Jorge
En la actualidad, la producción animal debe ser realizada buscando minimizar su impacto negativo sobre el ambiente. El fósforo es un mineral esencial para la vida animal, por lo tanto debe ser ofrecido en cantidades adecuadas para los animales logren cumplir con las metas productivas establecidas. Sin embargo, es necesario cuidar que la oferta diet...
Rodríguez Fadragas, C. Rodríguez González, M.
One of the fundamental applications of the ultrasonic pulse velocity method (UPV) to the study of concrete consists in the estimation of the mechanical properties. The precision on the estimation of theses properties may be dependent on the incidence of several factors, one of them is the free water content absorbed by the sample of concrete under ...
Princigallo, A.
A method was developed to measure the diffusion coefficient of chloride ions in cement paste based on an analytical solution to Fick’s 2nd law in a cylindrical coordinate system. This natural method yielded diffusivity results within as little as a month. Testing time was reduced by exploiting the three-dimensional inward flux in the specimen. In a...