The objective of the present study was to evaluate the antimicrobial activity of a system obtained, mixing in equal parts, the alcoholic extract of Citrus paradisi seeds, and the essential oils of Luma chequen, Melaleuca alternifolia and Cymbopogon citratus; in front of Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans and Aspergillus niger. Agar well diffusion method was used, considering an inhibition halo of 8 mm, as a minimum valid measure. Individual components showed the following activity (inhibition halo “mm”): C. paradisi extract (E. coli: “9.67 ± 0.47”; S. aureus: “11.67 ± 1.25”; P. aeruginosa: “9.67 ± 0.47”; C. albicans: “7.67 ± 0.47” and A. niger: “no activity”); essential oil of L. chequen (E. coli: “12.00 ± 0.00”; S. aureus: “total inhibition”; P. aeruginosa: “no activity”; C. albicans: “13.33 ± 0,4...

El objetivo del presente estudio fue evaluar la actividad antimicrobiana de un sistema obtenido, mezclando en partes iguales, el extracto alcohólico de semillas de Citrus paradisi, y los aceites esenciales de Luma chequen, Melaleuca alternifolia y Cymbopogon citratus; frente a Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans y Aspergillus niger. Se utilizó el método de difusión en pozo, la actividad antimicrobiana se evaluó por medición de los halos de inhibición. Los componentes individuales presentaron la siguiente actividad (halo de inhibición “mm”): extracto de C. paradisi (E. coli: “9,67 ± 0,47”; S. aureus: “11,67 ± 1,25”; P. aeruginosa: “9,67 ± 0,47”; C. albicans: “7,67 ± 0,47” y A. niger: “sin actividad”); aceite esencial de L. chequen (E. coli: “12,00 ± 0,00”; S. aureus: “inhibición total”; P. aerugino...

The radiation pathway through a medium where occur the absorption, scattering and emission phenoma is described by the radiative transfer equation (ETR). For purely absorbing media, the dispersion phenomenon is neglected by reducing the ETR to a linear differential equation with analytical solution. For dispersive media, the ETR is a nonlinear differential equation, with non analytical solution and the solution must be approximated by deterministic numerical methods. Monte Carlo is a stochastic method based in probabilities and use random numbers to simulate the occurrence of an event, in this case, the pathways radiation in a participating media. In this study, we have used finite difference and discrete ordinates methods to solve the ETR in one dimension, the results were compared with the Monte Carlo results, Test case results are presented, also the source code used for the solution ...

The objective of the present research is demostrate in an experimental way that the continuos moderate exercise has an antioxidant effect reducing the provoked stress. With this clear objective we designed a transversal experiment using case studies with a controlled group using 32 Wistar rats with 25 grams each one and with one month old too. All these rats were distributed in four groups: “A” was the control one, “B” was induced to have stress, “C” was induced to have stress with continuos moderate physical exercise, “D” was under continuos moderated physical exercise. The stress was provoked by ethanol inhalation and some doses of amphetamine (0,5mg/Kg of weight) for 7 days. The rats were under continuos moderated exercises for 7 days. The animals were sacrificed and the antioxidant activity of Superoxido Dismutase (SOD) and Catalasa (CAT) in liver and brain was tested...

The objective of the present research is demostrate in an experimental way that the continuos moderate exercise has an antioxidant effect reducing the provoked stress. With this clear objective we designed a transversal experiment using case studies with a controlled group using 32 Wistar rats with 25 grams each one and with one month old too. All these rats were distributed in four groups: “A” was the control one, “B” was induced to have stress, “C” was induced to have stress with continuos moderate physical exercise, “D” was under continuos moderated physical exercise. The stress was provoked by ethanol inhalation and some doses of amphetamine (0,5mg/Kg of weight) for 7 days. The rats were under continuos moderated exercises for 7 days. The animals were sacrificed and the antioxidant activity of Superoxido Dismutase (SOD) and Catalasa (CAT) in liver and brain was tested...