Prevalencia de síntomas musculo-esqueléticos en trabajadores de una institución de educación superior en el departamento de Arauca, Colombia, 2015

Introducción Los desórdenes musculo esqueléticos representan uno de los problemas de salud ocupacional más comunes de trabajadores, lo cual genera ausentismo laboral y aumento en los costos de enfermedades laborales. Objetivo Estimar la prevalencia de síntomas osteomusculares y su relación con factores de riesgo ocupacional, en personal docente y administrativo de una institución de educación superior en el Departamento de Arauca para el año 2015. Métodos Estudio analítico de corte transversal en una muestra de 116 trabajadores. Se utilizaron dos instrumentos: “La Encuesta Nacional de Condiciones de Trabajo” del Instituto Nacional de Seguridad e Higiene en el Trabajo de España (INSHT) y el “Cuestionario Ergopar”, validados al Español. Se obtuvo previa autorización del Comité de ética de la Universidad del Rosario. El análisis estadístico se realizó con el IBM SPSS Statistics versión 20.0. Resultados: Los síntomas osteomusculares con mayor prevalencia fueron en cuello (86,2%), espalda lumbar (61,2%), manos muñecas (59,5%) y pies (52,6%); no se observaron diferencias estadísticamente significantes entre administrativos e instructores. En el lugar de trabajo los factores de riesgo con mayor prevalencia fueron exposición a temperaturas extremas (48,3%), aberturas y huecos desprotegidos, escaleras, plataformas, desniveles (44%) significativamente mayor en instructores (52,6%) que en personal administrativo (27,5%) (p= 0,010). Conclusiones: Los síntomas osteomusculares más prevalentes fueron aquellos propios de la actividad docente: cuello, espalda lumbar, manos muñecas y pies. El personal de la institución en especial los docentes está expuesto a factores de riesgo físico, químico y ergonómico. Las condiciones de trabajo son adecuadas. No se encontró asociación estadística entre exposición a factores de riesgo en el puesto de trabajo y prevalencia de síntomas osteomusculares. Se debe establecer acciones dirigidas a evitar lesiones musculo esqueléticas en la población.

Tectonic and lithological controls on fluvial landscape development in central-eastern Portugal: Insights from long profile tributary stream analyses

This study examines the long profiles of tributaries of the Tagus and Zêzere rivers in Portugal (West Iberia) in order to provide new insights into patterns, timing, and controls on drainage development during the Quaternary incision stage. The studied streams are incised into a relict culminant fluvial surface, abandoned at the beginning of the incision stage. The streams flow through a landscape with bedrock variations in lithology (mainly granites and metasediments) and faulted blocks with distinct uplift rates. The long profiles of the analyzed streams record an older transitory knickpoint/knickzone separating (1) an upstream relict graded profile, with lower steepness and higher concavity, that reflects a long period of quasi-equilibrium conditions reached after the beginning of the incision stage, and (2) a downstream rejuvenated long profile, with steeper gradient and lower concavity, particularly for the final reach, which is often convex. The rejuvenated reaches testify to the upstream propagation of several incision waves, interpreted as the response of each stream to increasing crustal uplift and prolonged periods of base-level lowering by the trunk drainages, coeval with low sea level conditions. The morphological configurations of the long profiles enabled spatial and relative temporal patterns of incisions to be quantified. The incision values of streams flowing on the Portuguese Central Range (PCR; ca. 380–150 m) are variable but generally higher than the incision values of streams flowing on the adjacent South Portugal Planation Surface (SPPS; ca. 220–110 m), corroborating differential uplift of the PCR relative to the SPPS. Owing to the fact that the relict graded profiles can be correlated with the Tagus River T1 terrace (1.1–0.9 My) present in the study area, incision rates can be estimated (1) for the streams located in the PCR, 0.38–0.15 m/ky and (2) for the streams flowing on the SPPS, 0.22–0.12 m/ky. The differential uplift inferred in the study area supports the neotectonic activity of the bordering faults, as proposed in previous studies based upon other geological evidence.

Tectonic and lithological controls on fluvial landscape development in central-eastern Portugal: Insights from long profile tributary stream analyses

This study examines the long profiles of tributaries of the Tagus and Zêzere rivers in Portugal (West Iberia) in order to provide new insights into patterns, timing, and controls on drainage development during the Quaternary incision stage. The studied streams are incised into a relict culminant fluvial surface, abandoned at the beginning of the incision stage. The streams flow through a landscape with bedrock variations in lithology (mainly granites and metasediments) and faulted blocks with distinct uplift rates. The long profiles of the analyzed streams record an older transitory knickpoint/knickzone separating (1) an upstream relict graded profile, with lower steepness and higher concavity, that reflects a long period of quasi-equilibrium conditions reached after the beginning of the incision stage, and (2) a downstream rejuvenated long profile, with steeper gradient and lower concavity, particularly for the final reach, which is often convex. The rejuvenated reaches testify to the upstream propagation of several incision waves, interpreted as the response of each stream to increasing crustal uplift and prolonged periods of base-level lowering by the trunk drainages, coeval with low sea level conditions. The morphological configurations of the long profiles enabled spatial and relative temporal patterns of incisions to be quantified. The incision values of streams flowing on the Portuguese Central Range (PCR; ca. 380–150 m) are variable but generally higher than the incision values of streams flowing on the adjacent South Portugal Planation Surface (SPPS; ca. 220–110 m), corroborating differential uplift of the PCR relative to the SPPS. Owing to the fact that the relict graded profiles can be correlated with the Tagus River T1 terrace (1.1–0.9 My) present in the study area, incision rates can be estimated (1) for the streams located in the PCR, 0.38–0.15 m/ky and (2) for the streams flowing on the SPPS, 0.22–0.12 m/ky. The differential uplift inferred in the study area supports the neotectonic activity of the bordering faults, as proposed in previous studies based upon other geological evidence.

Project Aurora III; final report. Contract no. AF 19(628)-380, Project no. 5631, Task no. 563111. Period covered: 12 February 1962 through 15 June 1965.

"AFCRL-65-451"

Spatial variation in the strength of mutualism between a jumping spider and a terrestrial bromeliad: Evidence from the stable isotope N-15

Psecas chapoda, a neotropical jumping spider strictly associated with the terrestrial bromeliad Bromelia balansae in cerrados and semi-deciduous forests in South America, effectively contributes to plant nutrition and growth. In this study, our goal was to investigate if spider density caused spatial variations in the strength of this spider-plant mutualism. We found a positive significant relationship between spider density and delta N-15 values for bromeliad leaves in different forest fragments. Open grassland Bromeliads were associated with spiders and had higher delta N-15 values compared to forest bromeliads. Although forest bromeliads had no association with spiders their total N concentrations were higher. These results suggest that bromeliad nutrition is likely more litter-based in forests and more spider-based in open grasslands. This study is one of the few to show nutrient provisioning and conditionality in a spider-plant system. (c) 2008 Elsevier Masson SAS. All rights reserved.

Road Safety Audit for I-380 through the Cities of Cedar Rapids and Hiawatha in Linn County, Iowa, 2009

Interstate 380 (I-380) through Cedar Rapids and Hiawatha, Iowa, is a multilane divided urban freeway that was constructed in 1976 to the Cedar River and in 1981 from that point northerly. Traffic volumes vary from 47,000 to 83,500 vehicles per day, with about 8%–15% trucks and buses. Based on concern for the high number of crash incidents, particularly serious crashes, and increased traffic volumes on this roadway, the City of Cedar Rapids and the Iowa Department of Transportation (Iowa DOT) District 6 Office requested that a road safety audit be conducted for this roadway section. Representatives from the Iowa DOT, Federal Highway Administration, Center for Transportation Research and Education, local law enforcement, local government, and area businesses met to review crash data and discuss potential safety improvements to this segment of I-380. This report outlines the findings and recommendations of the road safety audit team for addressing the safety concerns on this I-380 corridor and explains several selected mitigation strategies.

ALBUM AMICORUM de Jean Durand (1583-1592). In-8 de 2 f. lim. et 380 p., mar. r., comp. de mos. de mar. v., riche dorure à petits fers, tr. dor. et ciselée. (Rel. du XVIe siècle.)

Durand (Jean). Album amicorum (1583-1592)

Propuesta de radiodifusión educativa en el Estado de Hidalgo, México, para alfabetizar a personas mayores de 15 años.

Establecer y difundir en el estado de Hidalgo (México), los contenidos necesarios para alfabetizar a personas mayores de 15 años a través de la emisora del gobierno estatal. Alfabetizar, es enseñar a leer y escribir. Sin embargo en un segundo momento se brinda conocimientos matemáticos para que su alfabetización quede complementada y así, logren aprendizajes básicos como sumar, restar, multiplicar o dividir. Se pretende también establecer un canal de comunicación para toda la población perteneciente a las comunidades más apartadas del estado, cuyas condiciones geográficas los colocan en situaciones de alejamiento de abandono y tristeza. Consta de dos partes: La primera parte contiene un marco teórico, en el que se habla sobre el analfabetismo con una visión general y centrándose en el estado de Hidalgo (México), se trata sobre los sistemas de alfabetización de adultos y sobre los medios de comunicación y la educación. La segunda parte contiene el planteamiento y diseño de la investigación describiendo los objetivos, el diseño y por último, una propuesta de evaluación de logros, realizando una evaluación del programa. Surge la necesidad de poner en marcha un proyecto de radiodifusión educativa para alfabetizar a personas mayores de 15 años, el cual busca beneficiar a la población vulnerable de un estado carente de servicios educativos apropiados para la mayoría de los habitantes analfabetos. Se pudo comprobar la importancia que tiene esta modalidad educativa y el poco interés que despierta entre las personas encargadas del sistema educativo y el radiofónico en el estado de Hidalgo. Se espera que, en algunos meses más, el proyecto pueda llevarse a cabo en coordinación con las instituciones correspondientes. 'Un paso juntos' es el nombre del programa de radio que busca alfabetizar en el estado de Hidalgo, es el grano pequeño de arena para ese cuarenta por ciento de la población hidalguense que necesita alfabetizarse.

Spatial variation in the strength of mutualism between a jumping spider and a terrestrial bromeliad: Evidence from the stable isotope N-15

Psecas chapoda, a neotropical jumping spider strictly associated with the terrestrial bromeliad Bromelia balansae in cerrados and semi-deciduous forests in South America, effectively contributes to plant nutrition and growth. In this study, our goal was to investigate if spider density caused spatial variations in the strength of this spider-plant mutualism. We found a positive significant relationship between spider density and delta N-15 values for bromeliad leaves in different forest fragments. Open grassland Bromeliads were associated with spiders and had higher delta N-15 values compared to forest bromeliads. Although forest bromeliads had no association with spiders their total N concentrations were higher. These results suggest that bromeliad nutrition is likely more litter-based in forests and more spider-based in open grasslands. This study is one of the few to show nutrient provisioning and conditionality in a spider-plant system. (c) 2008 Elsevier Masson SAS. All rights reserved.