Revisión: Bioética, interdisciplinaridad y práctica clínica

Revisión del libro Bioética, Interdisciplinaridad y Práctica Clínica. Jussara de Azambuja Loch. Gabriel José Chittó Gauer. María Casado(Organizadores). EDIPUCRS. Porto Alegre, Brasil. 2008. 414 pp

"El elemento volitivo como determinante de la filiación derivada de las técnicas de reproducción asistida"

Los cambio provocados por las Técnicas de Reproducción Asistida en materia de filiación nos llevan a pensar que los criterios decisivos para la disciplina de la filiación (por naturaleza) han cambiado a compás de las mutaciones de la conciencia social. En este trabajo procuraré demostrar cómo la voluntad ha pasado a ser el elemento decisivo en la determinación de la maternidad y/o paternidad a partir del surgimiento y utilización de las Técnicas de Reproducción Asistida.

Las restricciones de acceso a un aborto legal y seguro como violación de los derechos humanos de las mujeres

Este trabajo tiene por objeto el estudio y análisis del acceso al aborto legal y seguro como esencial para el disfrute y efectivo ejercicio de los derechos humanos de las mujeres.Procuraré demostrar cómo el acceso al aborto seguro y legal es un elemento central para el cumplimiento de los derechos humanos de las mujeres en términos generales, incluyendo sus derechos reproductivos y aquellos relacionados a su inherente condición de persona, y cómo su penalización y demás restricciones de acceso, importan una violación de estos derechos humanos.Consecuentemente, más que de un "derecho al aborto" en sentido estricto, de lo que procuro hablar es de la concreción de los derechos a la libertad, la intimidad, la dignidad y el libre desarrollo de la personalidad, dado que, las decisiones de las mujeres en materia de aborto no tienen que ver solamente con sus cuerpos en términos abstractos, sino que, en términos másamplios, se encuentran relacionadas con sus derechos humanos inherentes a su condición de persona, a su dignidad y privacidad. Para su mejor entendimiento y desarrollo, dividiré el trabajo en 4 capítulos.El primer capítulo se dedicará al estudio y análisis de los aspectos legales del aborto: su contemplación en el marco de la Naciones Unidas, en el Consejo de Europa y en la Unión Europea. También se detallarán y explicaránlos diversos sistemas de regulación del aborto contemplados por las diferenteslegislaciones nacionales.En el segundo capítulo se analizará la problemática concerniente al aborto, realizando especial hincapié en sus causas y consecuencias; y se examinarán los principales argumentos de porqué no es útil la penalización del aborto.En el tercer capítulo abordaré, específicamente, porqué la penalización y las restricciones de acceso a un aborto legal y seguro importan una violación de los derechos humanos de las mujeres. Y en el cuarto capítulo efectuaré un análisis jurisprudencial de las principales sentencias del Tribunal Europeo de Derechos Humanos. Por último expondré mis conclusiones.

Effect of dripline flushing on subsurface drip irrigation systems

The velocity of dripline flushing in subsurface drip irrigation (SDI) systems affects system design, cost, management, performance, and longevity. A 30‐day field study was conducted at Kansas State University to analyze the effect of four targeted flushing velocities (0.23, 0.30, 0.46, and 0.61 m/s) for a fixed 15 min duration of flushing and three flushing frequencies (no flushing or flushing every 15 or 30 days) on SDI emitter discharge and sediments within the dripline and removed in the flushing water. At the end of the field experiment (371 h), the amount of solids carried away by the flushing water and retained in every lateral were determined as well as laboratory determination of emitter discharge for every single emitter within each dripline. Greater dripline flushing velocities, which also resulted in greater flushing volumes, tended to result in greater amounts of solids in the flushing water, but the differences were not always statistically significant. Neither the frequency of flushing nor the interaction of flushing frequency and velocity significantly affected the amount of solids in the flushing water. There was a greater concentration of solids in the beginning one‐third of the 90 m laterals, particularly for treatments with no flushing or with slower dripline flushing velocities. As flushing velocity and concurrently flushing volume increased, there was a tendency for greater solids removal and/or more equal distribution within the dripline. At the end of the field study, the average emitter discharge as measured in the laboratory for a total of 3970 emitters was 0.64 L/h. which was significantly less (approximately 2.5%) than the discharge for new and unused emitters. Only six emitters were nearly or fully clogged, with discharges between 0% and 5% of new and unused emitters. Flushing velocity and flushing frequency did not have consistent significant effects on emitter discharge, and those numerical differences that did exist were small (<3%). Emitter discharge was approximately 3% less for the distal ends of the driplines (last 20% of the dripline). Although not a specific factor in the study, the results of solids removals during flushing and solids retention within the different dripline sections suggest that duration of flushing may be a more cost‐effective management option than increasing the dripline flushing velocity through SDI system design. Finally, although microirrigation system components have been improved over the years, the need for flushing to remove solids and reduce clogging potential has not been eliminated

Subsurface drip irrigation emitter spacing effects on soil water redistribution, corn yield and water productivity

Emitter spacings of 0.3 to 0.6 m are commonly used for subsurface drip irrigation (SDI) of corn on the deep, silt loam soils of the U.S. Great Plains. Subsurface drip irrigation emitter spacings of 0.3, 0.6, 0.9 and 1.2 m were examined for the resulting differences in soil water redistribution, corn grain yield, yield components, seasonal water use, and water productivity in a 4‐year field study (2005 through 2008) at the Kansas State University Northwest Research‐Extension Center, Colby, Kansas. The results indicate that there is increased preferential water movement along the dripline (parallel) as compared to perpendicular to the dripline and that this phenomenon partially compensates for wider emitter spacings in terms of soil water redistribution. Corn yield and water productivity (WP) were not significantly affected by the emitter spacing with application of a full irrigation regime

Effect of flushing frequency on emitter clogging in microirrigation with effluents

Flushing is an important maintenance task that removes accumulated particles in microirrigation laterals that can help to reduce clogging problems. The effect of three dripline flushing frequency treatments (no flushing, one flushing at the end of each irrigation period, and a monthly flushing during the irrigation period) was studied in surface and subsurface drip irrigation systems that operated using a wastewater treatment plant effluent for three irrigation periods of 540 h each. The irrigation systems had two different emitters, one pressure compensating and the other not, both molded and welded onto the interior dripline wall, placed in laterals 87 meters long. Dripline flow of the pressure compensating emitter increased 8% over time, while in the nonpressure compensating emitter, dripline flow increased 25% in the surface driplines and decreased 3% in the subsurface driplines by the emitter clogging. Emitter clogging was affected primarily by the interactions between emitter location, emitter type, and flushing frequency treatment. The number of completely clogged emitters was affected by the interaction between irrigation system and emitter type. There was an average of 3.7% less totally clogged emitters in flushed surface driplines with the pressurecompensating emitter as compared to flushed subsurface laterals with the nonpressure compensating emitter