Search

Copyright of Revista Médica Clínica Las Condes is the property of Editorial Sanchez y Barcelo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal de Ciencia e Ingeniería is the property of Corporacion Universitaria Autonoma del Cauca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ingeniería (0121-750X) is the property of Ingenieria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of ESPOCH Congresses: The Ecuadorian Journal of S.T.E.A.M. is the property of Knowledge E DMCC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of CULCyT: Cultura Científica y Tecnológica is the property of Cultura Cientifica y Tecnologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista ANACEM is the property of Asociacion Nacional Cientifica de Estudiantes de Medicina de Chile and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal de Ciencia e Ingeniería is the property of Corporacion Universitaria Autonoma del Cauca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

We examined spatial variations in the biological descriptors of macrobenthic assemblage in relation to environmental parameters and metal distribution in the sediments along a channel of Bahía Blanca estuary affected by non-treatment sewage effluents. Along the channel, metal concentration values were higher than those in the internal estuary area, a sector considered as a reference site. The highest values of water turbidity and metal content in sediments were observed in the effluent discharge zone and at the site where sediments from dredging activities were deposited two years ago. The density of macrobenthic assemblages decreased towards the effluent discharge zone, but the richness and diversity reached to minimum values in both disturbed areas. Only two species of polychaetes were associated with these areas: Laeonereis acuta and Aphelochaeta sp.; the former being found in the effluent discharge zone, where Cd and Pb were most abundant, and the latter being the dominant species in the site characterized by dredging material and high concentrations of Cr and Ni. This study is the first approach to explore the impact of anthropogenic activities over the macrobenthic assemblage of the Bahía Blanca estuary, providing background data to use future management decisions. [ABSTRACT FROM AUTHOR]

Staphylococcus spp. can adhere and produce biofilm on different contact surfaces. Thus, the aim of this work was to compare the biofilm production by Staphylococcus spp. on stainless steel using two culture media, milk Ultra High Temperatura (UHT) and Brain Heart Infusion broth (BHI). The bacterial count of adhered cells on steel was performed two times (12 and 24 hours) for both media evaluated with incubation at 25 °C. The bacterial counts of adhered cells were analyzed using ANOVA and Duncan's test for average comparison (p < 0.05). The biofilm formation of two strains (wild type strain and type strain) were observed applying Scanning electron microscopy (SEM). The bacterial counts were between 7 and 8 log CFU/cm2. Significant difference was found among the strains evaluated; however, no significant difference was described in times and culture media tested. It was showed by SEM that the wild type strain (S.a2) had considerable ability to biofilm production, which was expected due its results on bacterial counts. Thus, it can indicate milk offers appropriate conditions to biofilm formation of Staphylococcus spp. on stainless steel. [ABSTRACT FROM AUTHOR]

Copyright of Agro Productividad is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Médica Clínica Las Condes is the property of Editorial Sanchez y Barcelo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Médica Clínica Las Condes is the property of Editorial Sanchez y Barcelo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agro Productividad is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Currently, the most common methods for proper capture of human movement in three dimensions require a laboratory environment and setting markers, accessories or sensors to the body segments. However, the high cost of this equipment is a limiting factor in diverse environments. Motion capture systems such as Microsoft Kinect™present an alternative approach to motion capture technology. In this paper, two motion capture systems are compared by means of joint trajectories and anthropometric measurements of a person in a normal gait cycle. The first is accurate trading system that uses markers (Vicon™), and the second is Microsoft Kinect™ camera. Both systems were evaluated in order to compare the geometric difference and the RMS error between the joint human walking paths obtained for each of the systems. The results show a greater variance in anthropometric measures and joint trajectories for Kinect, although this system is inexpensive and easy to use and install, cannot be used for precise kinematic analysis of human walking. [ABSTRACT FROM AUTHOR]

Copyright of Spanish Journal of Rural Development is the property of Spanish Journal of Rural Development and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of NOVA: Publicación Científica en Ciencias Biomédicas is the property of Universidad Colegio Mayor de Cundinamarca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Inge@UAN. Tendencias de la Ingeniería is the property of Universidad Antonio Narino and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article shows the relationship between the Poisson distribution and the Gamma distribution, in a concise and elementary way. It starts by reviewing the aspects and/or basic properties of each distribution. This includes demonstrations respective probability function and density function, besides the pertinent formulas expectation and variance, together with demonstrations of each of these. It exhibits some properties to be considered for each distribution, and presents the relationship between the latter. It also proposes some examples that illustrate the use of each distribution and its relationship mentioned. [ABSTRACT FROM AUTHOR]

Copyright of Educación XX1 is the property of Editorial UNED and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Ciencias is the property of Universidad del Valle and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Chilena de Pediatría is the property of Revista Chilena de Pediatria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Acquired defects of the upper third of the ear constitute a surgical challenge. Several techniques have been described, and results are sometimes unfavorable. An anatomical study in 10 fresh cadavers shows the constant presence of a neurovascular pedicle penetrating the root of helix. Location and vessel diameters are shown. Based on that anatomical knowledge, a series of 10 consecutive cases treated by the senior author is presented. Etiology, surgical technique, complications and long-term results are analyzed. The author's technique introduces a refinement of the Davis' technique, which uses a pedicled chondrocutaneous rotation conchal flap, cutaneous based on the upper auricular branch of superficial temporal artery. An axial pedicled superiorly based retroauricular flap provides the coverage of the new superior helical rim, and the posterior aspect of the chondrocutaneous flap is then covered with a full thickness skin graft. In a second stage, a Z plasty on the root of helix brings it a natural shape All the anatomical dissections demonstrate the presence of a neurovascular pedicle penetrating the root of the helix. The clinical series is composed by 8 traumatic defects, 1 electrical burn and 1 benign skin tumor. All flaps survived and so demonstrated pedicle safety. Two retroauricular flaps presented vascular deficit, one of them with complete spontaneous restoration and the other one with small distal cutaneous necrosis. Two cases suffered partial skin graft loss. Some technical details were developed while the series went on, which are discussed. All 9 patients recovered auricular contour, which seems better for us using the above described refinements. As a conclusion, the Davis´s technique represents an effective method to reconstruct the upper pole of the ear. Some technical refinements can improve the results with this approach, achieving a more natural contour of the reconstructed area. [ABSTRACT FROM AUTHOR]

Copyright of Revista Chilena de Obstetricia y Ginecología is the property of Revista Chilena de Obstetricia y Ginecologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introducción. La práctica médica, actualmente no sólo se basa en decisiones diagnósticas, terapéuticas, así como pronósticas, sino también bioéticas; y es aquí donde es necesario aprender a tomar decisiones racionales en condiciones de incertidumbre. Para ello, hay que ponderar una enorme cantidad de factores y tener en cuenta las perspectivas de todas las partes implicadas, por lo que en determinadas situaciones, el tratamiento puede tener ciertas consecuencias desfavorables y altamente maleficentes, tanto para el enfermo como para sus familiares, además de una repercusión en la misma institución hospitalaria y en la sociedad. Objetivo. Generar un comportamiento bioético en los residentes de pediatría que laboran con recién nacido (RN) con síndrome de disfuncion orgánica múltiple (SDOM), lo que contribuiría a mejorar los cuidados médicos requeridos dentro de la gravedad de estos pacientes y la humanización de la actitud propia del médico ante el RN con pronóstico de muerte elevada. Material y métodos. El diseño del estudio fue observacional, prospectivo y transversal, por medio de una encuesta anómina y voluntaria a médicos residentes durante los meses de febrero a julio del año 2006. El comportamiento a estudiar fue sobre la beneficencia, maleficencia, dignidad y traslado de la autonomía del neonato, y por último la indagatoria en las actitudes de distanasia, ortotanasia en pacientes neonatos hipotéticos con SDOM. Resultados. Con relación al abordaje terapéutico en el neonato con SDOM, 34% consideró que el tratamiento sólo es aplicable cuando la calidad de vida se acompaña de mínimas secuelas o de ninguna de ellas, El 50% de los encuestados consideró suspender el tratamiento en el neonato con SDOM cuando no existen probabilidades de supervivencia, 30% cuando se han agotado los medios biotecnológicos para el tra tamiento médico, así como 12% consideró retirar el manejo médico cuando la calidad de vida futura es deficiente. Con relación a la evaluación conjunta entre padres y médicos, en casos especiales se consideró benéfico hasta en 65% entre los médicos encuestados. Conclusiones. Intentar la curación o mejoría del neonato debe ser realizada siempre que sea posible; deberemos los médicos especialistas, instituir la aplicación de un tratamiento en el abordaje terapéutico en los casos dudosos, evitar medidas fútiles y eludir la demora en la toma de decisiones en cuanto a continuarlo o interrumpirlo y madurar la situación junto con la familia. La decisión final del apoyo vital asistencial deberá adoptarse de común acuerdo entre padres y el equipo médico. [ABSTRACT FROM AUTHOR]

The alcoholic drink consume was increase in woman adolescent and the associate complications like Fetal Alcohol Syndrome (FAS). The implications of this Syndrome in Central Nervous System was plentiful investigate, bay the wait the study of significant organ that liver is not study in the same case. The main scope of this work is to study the electron microscopy alterations on liver of rats with FAS and the possible protecting effect of folic acid on this organ. Methods and Materials: Eight Wistar adolescent and pregnant rats divided in four groups were used: A: control, B: folic acid treated, C: ethanol treated, and D: ethanol and folic acid treated. The treatments were applied using an intragastric fathom model through the whole pregnancy period up to the birthing day. There were chosen two thirty-five year-old cubs with different sex, for every mother, and used for studying proposes. There were taken liver samples of the chosen animals to be analyzed by the electron transmission microscopy technique. Results: Swelled mitochondria with electron dense characteristics as well as dilatation of endoplasmic reticulum were observed in liver cells of rats with FAS. It was also found that biliary channel were clearly bloated. It was observed that these alterations were minimized in liver cells of rats with FAS that were treated with folic acid. Conclusions: Rats with FAS show histology liver disorder in liver cells and biliary channel. The application of folic acid to pregnant ethanol-consuming mothers through the gestation has a protecting effect on their descendents. [ABSTRACT FROM AUTHOR]

Specularius impressithorax is a bruchid of African origin whose displacement has been worldwide, it has been found in India, United States (Hawaii, California), and currently in Mexico. In the latter country, it has moved to several states because of its food source, that is the Erythrina's seeds, which are found abundantly in climatic zones that goes from semiarid to dry or temperate; the climate and the Erythrina species diversity found in Mexico are favorable for its establishment and the attack to new hosts. For the study of the insect life cycle, breeding was done, the number of eggs laid was recorded, as well as the time required for each developmental stage; also the polyphagy was measured by offering to it new hosts, and an exploration of parasitism in S. impressithorax, all of this at environmental temperature (18-22 ºC) and controlled temperature of 25 ºC ± 2 ºC. The results showed that S. impressithorax in the laboratory with controlled conditions undergo a decrease in the oviposition of fertile eggs in comparison to the environmental temperature where most of the eggs become fertile and reached the adult stage. Virgin insects of S. impressithorax were placed in containers where they were fed with different species of Erythrina native to Mexico and the food preferences was evaluated. It was observed that they were capable to invade new hosts, from which adults emerged. The collects were carried out where seeds infested by S. impressithorax were present, eggs of the bruchid attacked by a parasite was observed, this was identified as Uscana sp. (Hymenoptera: Trichogrammatidae); however, free adult forms could not be obtained for corroboration of the species. A second natural enemy was determined as Entedeon erythrinae Gumovsky & Ramadan (Hymenoptera: Eulophidae) that is an egg-larvae parasitoid of bruchids. Previous data show that infestation to new Erythrina hosts and the increase of its dispersion will be imminent, and that it is necessary to implement control strategies for the bruchid; biological control can be included in its management and thus prevent the deterioration of the host germplasm, which play important functions in the ecology, the ethnobotany, and science. [ABSTRACT FROM AUTHOR]