¿Cuáles son los criterios de valoración en salud laboral?

La intención de la autora en este artículo es orientar al especialista en Derecho sobre el significado que tienen los criterios de valoración para agentes químicos, físicos y biológicos, utilizados como referencia por los técnicos en Prevención de Riesgos Laborales para el estudio y protección de la salud del trabajador en su lugar de trabajo. Se exponen cuales son los valores legales actuales así como los que se emplean habitualmente en aquellos campos que carecen de normativa, basándose en bibliografía científica contrastada.________________________________ In this article the author seeks to give advice to Labour Relations Lawyers on the meaning of occupational exposure standards for chemical, physical and biological agents. These criteria are used as a reference by Occupational Safety and Health Experts in the study and protection of workers' health at their workplace. Both the present legal criteria and the ones used if there is no set of rules available, will be explained in this article on the basis of a contrastive scientific bibliography

La televisión de pago en España : Canal Plus

El presente Trabajo Final de Grado, titulado “La televisión de pago en España: Canal Plus”, desarrolla toda la trayectoria de la primera plataforma de televisión digital vía satélite en España, Canal Plus. El proyecto recoge todo su recorrido, desde que naciera en 1990 como canal analógico de pago, hasta que desapareciera en 2016 como canal digital de pago. El discurso será desarrollado a través de datos y referencias que apoyen la narración de los hechos, esclareciendo así las circunstancias que se van sucediendo. Así, a lo largo del estudio se tratarán los principales acontecimientos relacionados con la historia de Canal Plus en España. El tema de este proyecto es de carácter novedoso y de contenido totalmente actual en una gran parte, dado el reciente desarrollo de circunstancias de especial importancia en el ámbito de la televisión digital por satélite en nuestro país, hecho que enriquece más el estudio.Universidad de Sevilla. Grado en Periodism

Violencia y abusos en los señoríos del linaje Manrique a fines de la Edad Media.

Sin resume

Chemokines and macrophage migration inhibitory factor in diabetic nephropathy.

Introduction: Diabetic nephropathy (DN) is the leading cause of end-stage renal disease in the Western world. Aim: To determine whether macrophage migration inhibitory factor (MIF), monocyte chemoattractant protein-1 (MCP-1) or CC chemokine ligand 18 (CCL18) have a causative role in the development of renal inflammation and fibrosis in DN and are useful biomarkers of disease progression. Methods: Urine and plasma samples were collected from 115 DM and 116 Non-DM at baseline, previously analysed for MCP-1 and CCL18 ELISA by Dr Qureshi. I measured MIF in these samples and collected 107 DM and 114 Non-DM data points (GFR, ACR/UPCR and clinical parameters) at >18 months and >3 years. MIF, MCP-1 and CCL18 urine, plasma and serum analysis was performed in 42 DM and 60 Non-DM at >3 years follow up. Intrinsic renal cells were cultured and stimulated with diabetic conditions. These cytokines and fibronectin were measured in tubuloepithelial cells and podocytes. Results: Baseline plasma CCL18 and MIF predicted a decline in GFR in DM at >18 months but not at >3 years. Cytokine production varies over time with significant correlations at baseline that are not maintained. Cytokines correlate differently with GFR, ACR/UPCR in DM versus Non-DM proteinuric renal diseases. Plasma and serum cytokine levels correlated significantly with no correlation between these and urinary levels. All intrinsic renal cells were able to produce MIF, MCP-1 and CCL18 following stimulation. The interaction of these cytokines and their effects on fibronectin vary in diabetic conditions and following recombinant cytokine stimulation. The diabetic environment appears to orchestrate cytokine signals according to cell type. Conclusion: These results suggest cytokines may play a key role in the pathogenesis and or progression of DN. The clinical study suggests cytokines may predict progression; however, larger studies are needed with samples taken at different time points.Open Acces

A Task-Based Speaking Course for Ninth Grade Students of the Institución Educativa Inobasol de Soledad

The human being is in constant communication with other people. A person uses the language to do it, and the speaking is the skills employed for that. In spite of its importance in this process, the oral production is not worked enough in many public schools in our country. Due to this fact, the students of 9th grade of the Institución Educativa Inobasol selected speaking as the skill that they need to increase in the English learning process. In this paper appears the design of a syllabus, it is implemented and evaluated with the purpose the learners enhance their oral productions by means of the task-based approach. The TBA is according to the school curriculum, the pedagogical model, and the learners’ need. This approach provided different tasks in real situations where is necessary students employ the speaking to share and provide information. In this document, also appears the outcomes achieved with the application of the TBA. This data was collected through checklists, and oral production of the students during the development a of the lessons

Activitats generals del professorat de la secció (1 de juny 1984 - 28 de febrer 1985)

Actividades generales del profesorado de la sección (1 de junio 1984-28 de febrero 1985)</span

Diatomite releases silica during spirit filtration

The purpose of this study was to ascertain whether diatomite is an inert filter aid during spirit filtration. Surely, any compound with a negative effect on the spirit composition or the consumer’s health could be dissolved. In this study different diatomites were treated with 36% vol. ethanol/water mixtures and the amounts and structures of the extracted compounds were determined. Furthermore, Brandy de Jerez was diatomite- and membrane-filtered at different temperatures and the silicon content was analysed. It was found that up to 0.36% by weight of diatomite dissolved in the aqueous ethanol and amorphous silica, in the form of hollow spherical microparticles, was the most abundant component. Silicon concentrations in Brandy de Jerez increased by up to 163.0% after contact with diatomite and these changes were more marked for calcined diatomite. In contrast, reductions of more than 30% in silicon concentrations were achieved after membrane filtration at low temperatures

Formation of siliceous sediments in brandy after diatomite filtration

Brandy is quite a stable spirit but sometimes light sediment appears. This sediment was separated and analysed by IR and SEM-EDX. It was revealed that the sediment is composed mostly of silica and residual organic matter. Silica was present as an amorphous phase and as microparticles. In an attempt to reproduce the formation of the sediment, a diatomite extract was prepared with an ethanol/water mixture (36% vol.) and a calcined diatomite similar to that used in brandy filtration. This extract was added to unfiltered brandy in different amounts. After 1 month, the Si concentration decreased in all samples and sediments with similar compositions and features to those found in the unstable brandy appeared. The amounts of sediment obtained were directly related to the decrease in Si concentration in solution. Consequently, it can be concluded that siliceous sediment in brandy originates from Si released during diatomite filtration