A5065828541- Air Quality and Health Impacts
- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Vehicle emissions and performance
- Water Quality Monitoring and Analysis
- Toxic Organic Pollutants Impact
- Public Health and Environmental Issues
- Environmental and Cultural Studies in Latin America and Beyond
- Environmental Impact and Sustainability
- Plant and soil sciences
- Water resources management and optimization
- Groundwater and Isotope Geochemistry
- Healthcare and Environmental Waste Management
- Finance, Taxation, and Governance
- Congenital Heart Disease Studies
- Animal Nutrition and Physiology
- COVID-19 impact on air quality
- Water Quality and Pollution Assessment
- Atmospheric and Environmental Gas Dynamics
- Regional Development and Innovation
- Environmental Policies and Emissions
- Water Resource Management and Quality
- Lymphoma Diagnosis and Treatment
- Heavy metals in environment
- Water-Energy-Food Nexus Studies
Universidad Nacional
2010-2024
University of Cartagena
2024
University of Quintana Roo
2023
Technology and Management Services (Switzerland)
2023
Centro de Investigación en Materiales Avanzados
2022
Center for Research and Advanced Studies of the National Polytechnic Institute
2020
Smithsonian Tropical Research Institute
2017-2020
Instituto Politécnico Nacional
2020
University of Pamplona
2012
Tecnológico Nacional de México
2003
Costa Rica has a legal gap in terms of the regulations to control seawater quality recreational beaches, so present investigation aimed create exploratory study heavy metals concentrations beaches Rica. In 2013, monitoring campaign was carried out on thirteen Pacific coast, and five Caribbean coast. The country divided into four zones North (PN), Central (PC), South (PS) Southern (CS). Eight (Mn, Cd, Co, Fe, Cr, Ni, Cu, Pb) were analyzed samples by absorption spectrometry, physicochemical...
In mediterranean-type climate conditions, fog contributes significantly to the water balance of ecosystem, since precipitation rates are lower than evapotranspiration rates. However, it remains unclear whether contribution is a direct input system through canopy dripping or if limits by limiting radiation and vapor pressure deficit. Focusing on former, in this study we aim understand as mediterranean coastal forests. Using principle (ΔS = ET - (P + F)), characterize key elements...
PM10 and PM2.5 levels, concentrations of major ionic components, trace elements, organic elemental carbon were evaluated from samples collected in 4 sites (industrial, commercial residential zones) located the metropolitan area Costa Rica. The annual mean PM levels higher high traffic–commercial (HE–01) industrial (BE–02) sites, 55 μg m–3 52 for 37 36 PM2 5, respectively. components PM25 matter (OM) (EC) (44.5–69.9%), secondary ions (16.1–27.2%), whereas OM+EC (32.7–59.4%), crustal material...
Road dust (RD) resuspension is one of the main sources particulate matter in cities with adverse impacts on air quality, health, and climate. Studies variability deposited PM10 fraction RD (RD10) have been limited Latin America, whereby our understanding central factors that control this pollutant remains incomplete. In study, forty-one RD10 samples were collected two Andean (Bogotá Manizales) analyzed for ions, minerals, trace elements. levels varied between 1.8–45.7 mg/m2, an average 11.8...
PM2.5 and PM10 samples were collected at 4 14 sampling sites, respectively, located in the Metropolitan area of Costa Rica (MACR), during 2010–2011. These sites representative commercial, industrial residential zones this region. Concentrations elemental carbon (EC) organic (OC) analyzed using IMPROVE thermal-optical reflectance (TOR) method. OC EC concentrations higher commercial showed clear seasonal variations with observed rainy season (May–November) than dry (December–April), due to...
Nitrate pollution threatens the Barva and Colima multi-aquifer system, primary drinking water source in Greater Metropolitan Area of Costa Rica. In addressing nitrate contamination dynamics, this study proposes an integrated approach by combining multivariate statistical analyses, hydrochemical parameters, sewage discharge, regional land-use land-cover patterns to assess extent degree contamination, dominant biogeochemical processes, refine interpretation sources previously derived solely from δ
Nature-based solutions (NbSs) have long recognized the value of coastal and marine ecosystem management associated services as useful tools for climate change mitigation (e.g., blue carbon) adaptation protection against flooding storm surges). However, NbSs remain poorly acknowledged mostly absent from planning disaster risk reduction policies in Caribbean, well ex-post reconstruction funds. With increasing frequency intensity hurricanes region, are now more needed than ever. Taking Mexico a...
In this work, receptor models were used to identify the PM2.5 sources and its contribution air quality in residential, comercial industrial sampling sites Metropolitan Area of Costa Rica. Principal component analysis with absolute principal scores (PCA-APCS), UNIMX positive matrix factorization (PMF) was applied analyze data collected during 1 year campaign (2010-2011). The samples characterized through composition looking for trace elements, inorganic ions organic elemental carbon. These...
Objetivos: Analizar los dilemas bioéticos de la política migratoria colombiana relacionada con el flujo inmigrantes venezolanos, así como sus incidencias económicas y sociales durante periodo 2014-2023. Métodos: En lo que respecta al enfoque metodológico investigación, se opta por una perspectiva epistemológica combina elementos positivistas e interpretativos. Se aplicó un sintético que, mediante abordaje holístico, facilitó análisis minucioso exhaustivo las variables constituyen fenómeno...
Se determinó la tasa de generación y caracterización residuos sólidos ordinarios, en el sector residencial comercial 04 municipios ubicados geográficamente dentro del Gran Área Metropolitana Costa Rica. Para ello, período 2014-2015, se realizaron muestreos un número representativo viviendas comercios durante 07 días consecutivos. La promedio ponderada para área estudio resultó ser 0,59 kg/hab-día. Los generados presentan como componentes mayoritarios: orgánicos 55,9%, seguidos materiales con...
In this work, we considered data of 25 water quality variables collected between January 2006 to December 2010 at 64 monitoring sites along the Virilla River Subbasin in Costa Rica. Factor analysis identified two potential pollution sources that explained 80.9% total variance LP, 77.1% MP, and 67.8% HP. Most were influenced primarily by due industrial wastewater, agricultural activities urban runoff.
<p>Se llevó a cabo una estimación de las emisiones generadas por la flota vehicular existente en Costa Rica enero del 2010,mediante los factores emi- sión obtenidos modelo MOBILE 6 Agencia Protección Ambiental Estados Unidos y datos actividad reportados Dirección Sec- torial Energía. Del total 544 767 toneladas contaminantes criterio producidas operación fuentes móviles carreteras, el 60,4% corres- ponde monóxido carbono (CO), son ve- hículos particulares carga liviana que operan con...
Se determinaron las concentraciones de Arsénico (As) presentes en muestras agua para uso y consumo humano recolectadas 106 operadores comunales sistemas abastecimiento regiones Chorotega Huetar Norte Costa Rica durante 2013-2017. A que registraron As por encima la norma nacional se le evaluaron los restantes parámetros incluidos el nivel N2 del Reglamento potable Rica. La determinación arsénico hizo utilizando espectrometría absorción atómica con horno grafito. Los principales...
Ticks (Acari: Ixodidae) collected from wild birds in Panama were tested for the presence of tick-borne pathogens as Rickettsia, Anaplasma, Ehrlichia, Bartonella, Borrelia, Hepatozoon sp., and Babesia. Overall 124 ticks found 57 belonging to 28 species: Amblyomma longirostre (32 larvae, 1 nymph), nodosum (30 nymphs), geayi (15 varium (5 2 naponense (2 larvae), ovale calcaratum (1 larva). DNA Rickettsia amblyommatis was detected 65% A. longirostre, 69% 14% varium. Moreover, results two larvae...