Masculinidades, familias y comunidades afectivas

Las emociones se construyen, expresan y regulan en las distintas esferas de socialización, y son las relaciones de género, familiares y comunitarias un ámbito central privilegiado para su análisis. Estas expresiones y experiencias emocionales son el pegamento de lo social que fijan las interacciones entre los sujetos y definen las estructuras sociales. El presente libro contiene ensayos que muestran la pertinencia del análisis de la dimensión emocional en los estudios de las relaciones de género, familiares y socioafectivas, organizados en torno a dos ejes vertebradores con variadas temáticas: la intersección entre emociones y masculinidades contemporáneas; las formas en que se significan, expresan y regulan las emociones desde el ámbito familiar, comunitario e institucional; la expresión de sentimientos y emociones de las masculinidades en relación con la lírica musical; las narrativas creadas a partir de encuentros colectivos para redensifi­car socialmente los espacios públicos; la regulación o desestabilización de las relaciones sociales hacia familias que enfrentan casos de cuidado y enfermedad; las correspondencias de género e intergeneracionales en estudios de caso de familias extendidas y de adultos mayores en contextos de pobre­za urbana

Microstructured catalytic hollow fiber reactor for methane steam reforming

Microstructured alumina hollow fibers, which contain a plurality of radial microchannels with significant openings on the inner surface, have been fabricated in this study and used to develop an efficient catalytic hollow fiber reactor. Apart from low mass-transfer resistance, a unique structure of this type facilitates the incorporation of Ni-based catalysts, which can be with or without the aged secondary support, SBA-15. In contrast to a fixed bed reactor, the catalytic hollow fiber reactor shows similar methane conversion, with a gas hourly space velocity that is approximately 6.5 times higher, a significantly greater CO2 selectivity, and better productivity rates. These results demonstrate the advantages of dispersing the catalyst inside the microstructured hollow fiber as well as the potential to reduce the required quantity of catalyst

Percepción de la frecuencia y causas de los eventos adversos por medicación en enfermería

Introducción. El objetivo del estudio de encuesta fue describir las percepciones de las enfermeras sobre varios tópicos relacionados con los errores de medicación, que son la causa más común de daño a los pacientes hospitalizados y frecuentemente son prevenibles. Material y métodos. Se obtuvo una muestra por conveniencia de 173 enfermeras de 2 hospitales generales. Resultados. De las 173 que respondieron, 117 (68%) percibió una administración incorrecta de medicamentos, 71 (41%) observó medicamento o paciente equivocado, 74 (43%) percibió que más de un factor contribuyó a los errores de medicación incluyendo la sobrecarga de trabajo. Conclusiones. El error por confusión de medicamentos fue común y atribuido a que tenían nombres parecidos. Adicionalmente existen otros factores que contribuyen a los errores de administración de medicamentos atribuibles a los sistemas de salud, así como a las condiciones de los pacientes y al proceso de prescripción.Introduction. Adverse drug events are the most common cause of injury to hospitalized patients and are often preventable. The aim of the survey study was to describe nurses� perceptions about various issues related to medication errors. Material and methods. A convenient sample of 173 nurses from 2 general hospitals was obtained. Results. Of the 173 nurses who responded, 117 (68%) perceived incorrect medication administration, 71 (41%) observed wrong drug or wrong patient, 74 (43%) believed more than one factor contributed to medication errors including heavy workload. Conclusions. Confusing drug names that sound alike was a common type of medication error. Analysis indicated that additional factors involving the health care system, patients� conditions and doctors� prescriptions all contributed to administration errors. Additionally there are other factores contributing to errors in medication administration, attributable to the health systems, as well as the condition of patients and the prescription process

High nitrogen doped graphenes and their applicability as basic catalysts

Trabajo presentado en la International Conference on Diamond and Carbon Materials, celebrada en Riva del Garda (Italia) del 2 al 5 de septiembre de 2013.Great emphasis has been dedicated to the electronic properties of graphene. These properties can be modified by introducing heteroatoms such as boron or nitrogen in the carbon structure during or after graphene synthesis process. In this work we study the nitrogen doping effect of graphene on the catalytic dehydrogenation reaction of ethanol. Nitrogen atoms were introduced via insitu reduction of graphite oxides of various grain sizes (10, 100 and 200 mesh) which had been previously prepared following a modification of the brodie method. The obtained GO were treated under an inert atmosphere (50 mL/min N2) and in a reaction mixture of NH3 (10 mL/min), N2 (50 mL/min) and H2 (6 mL/min). All samples were heated until 773 K although one of them was also heated at 1173 K. The resulting materials were characterized by Raman, XPS, XRD, etc. XRD results proved both successful graphite oxidation (interlayer spacing increases from 0.35 to 0.67 nm) and GO reduction (002 reflection peak disapears in all cases but for GO10 sample which partially recovers its graphitic nature). A Raman spectrum of one of the original graphite (G100) and its corresponding reduced GO (in inert atmosphere and in NH3) is depicted in Fig. 1. The parent graphite with strong G band and very small D gave an intensity ratio ID/IG of about 0.04. This is quite different for the reduced GO and at the same time dependent on the reduction atmosphere. Higher ID/IG ratio was observed for the nitrogen doped sample owing to the structure disorder caused by the presence of N atoms. XPS gave insights on the amount and type of nitrogen incorporated after the treatment which was dependent on graphite particle size and treatment temperature (Table 1). These characteristics are in agreement with the behaviour of samples in the dehydrogenation reaction of ethanol.Peer Reviewe

High nitrogen doped graphenes and their applicability as basic catalysts

N-doped and un-doped graphene samples were synthesized starting from natural graphite of different particle sizes (10, 100 and 200 mesh) by oxidation and further thermal treatment under ammonia and inert atmospheres, respectively. Samples were thoroughly characterized by TEM, XRD, Raman and XPS. The nature and quantity of nitrogen species introduced were dependent on starting materials, reduction atmosphere (NH3 or inert) and temperature. All samples were employed as basic catalysts in the dehydrogenation reaction of ethanol. Acetaldehyde was the main product obtained owing to the basicity induced by the presence of N atoms in the graphene layers. Conversion increased with higher N at.% and lower number of stacked graphene sheets. Catalysts with highest ratio between both factors gave highest conversion values.Authors acknowledge financial support from the projects CTQ 2011-29272-C04-01 and 03 and project 2011/PUNED/0001.Peer Reviewe