Examinando por Materia "Rainfall"

Mostrando 1 - 3 de 3
  • Publicación
    Acceso abierto
    Aprovechamiento de Agua Lluvia a Través de la Captación en la Fachada del Edificio Chibcha de la Universidad de Santander
    (2022-06-02) Osorio-Luna, Johan Esnaider; Rueda-Parada, Fabián Mauricio; Tiria-Sandoval, Luis Carlos
    El propósito del presente trabajo de investigación es una propuesta desde la construcción civil y sus distintas ramas que la contemplan, con objetivo al aprovechamiento de las aguas lluvias por medio de la captación en la fachada del edificio Chibcha de la Universidad de Santander y de esta forma contribuir a la gestión integral de este recurso hídrico en dicha institución educativa. A través del diseño y experimento a pequeña escala de un sistema de captación por medio de los materiales señalados con el propósito de simular el agua que puede ser aprovechada, que consistió en tres sub experimentos en donde se probó el comportamiento de la captación del agua y se tuvo en cuenta la participación y la no participación del viento, analizando la velocidad del mismo, al variar la participación de algunos materiales y variables del viento, distancia e inclinación del viento para luego la elaboración de unos cálculos matemáticos. Llevar ese ejercicio experimental a gran escala y poder generar una visión más completa de cómo sería contar con esta tecnología de captación para el aprovechamiento de las aguas lluvias con el fin de ser reutilizadas en la Universidad de Santander, ya sea para los sanitarios, riego de plantas y también contemplar la posibilidad de su potabilización para ser usada también para el consumo humano.
  • Publicación
    Acceso abierto
    Effects of meteorological factors on human leptospirosis in Colombia
    (2020-10-10) Gutiérrez, Juan David; GAIA
    Leptospirosis is a disease usually acquired by humans through water contaminated with the urine of rodents that comes into direct contact with the cutaneous lesions, eyes, or mucous membranes. The disease has an important environmental component associated with climatic conditions and natural disasters, such as floods. We analyzed the relationship between rainfall and temperature and the incidence of leptospirosis in the top 30 municipalities with the highest numbers of cases of the disease in the period of 2007 to 2016. It was an ecological study of the time series of cases of leptospirosis, rainfall, and temperature with lags of 0, 1, 2, 3, and 4 weeks. A multilevel negative binomial regression model was implemented to evaluate the relationship between leptospirosis and both meteorological factors. In the 30 evaluated municipalities during the study period, a total of 5136 cases of leptospirosis were reported. According to the implemented statistical model, there was a positive association between the incidence of leptospirosis and rainfall with a lag of 1 week and a negative association with temperature with a lag of 4 weeks. Our results show the importance of short-term lags in rainfall and temperature for the occurrence of new cases of leptospirosis in Colombia.
  • Publicación
    Acceso abierto
    Spatiotemporal dynamics of human leptospirosis and its relationship with rainfall anomalies in Colombia
    (2018-04-09) Gutiérrez, Juan David; Martínez Vega, Ruth Aralí
    Background In Colombia, human leptospirosis (HL) is a disease that has had a mandatory notification rule since 2007. Humans usually acquire the infection through water contaminated with animal urine that comes into direct contact with cutaneous lesions, eyes or mucous membranes. Objectives To analyze the spatiotemporal variability in the occurrence of HL cases in Colombia between 2007 and 2016, and its relation with the El Niño Southern Oscillation (ENSO) cycle and the consequent anomalies in rainfall in spatiotemporal clusters. Methods An ecological study of the HL cases, aggregated by municipality, and reported between 2007 and 2016, is presented. Findings During the period of study, 9928 cases of HL were reported, and 58.9% of the municipalities reported at least one case of leptospirosis. Six spatiotemporal clusters were identified—five were in the Andean region and one was in the Caribbean region. The assessment of the ENSO cycle and rainfall anomalies suggests the importance of La Niña episodes, and excess rainfall periods in the occurrence of cases of HL. Conclusions Our results demonstrate the importance of the ENSO cycle, rainfall periods and periods with excess rainfall in the occurrence of cases and outbreaks of HL in Colombia, and suggest the importance of the topography of valleys and flood zones as zones in which the risk of infection is elevated.