Results: 131

Photocatalytic activity, water absorption capacity, and thermal stability of white cement-based mortars with polysiloxane silicone and different doses of titanium dioxide nanoparticles

Cienc. tecnol. salud; 9 (1), 2022
White cement-based mortars in urban areas are usually discolored and altered their esthetic properties due to air pollutants. The addition of nanoparticles in these mortars can provide photocatalytic properties that can decompose pollution agents. Likewise, other hydrophobic agents have been individually...

Ácaros en sistemas de ventilación de edificios industriales: bioindicadores de la calidad del aire interior

La Organización mundial de la Salud, ha señalado que 92% de la población mundial vive en lugares donde los niveles de calidad del aire se han reducido por debajo de los límites fijados, estimando que a nivel mundial aproximadamente 90% de las personas respiran aire contaminado y que la población de ...

Ambient air pollutants relate to hospital admissions for chronic obstructive pulmonary disease in Ganzhou, China

ABSTRACT OBJECTIVE To evaluate the relationship between ambient air pollutants and chronic obstructive pulmonary disease in relatively low-polluted areas in China. METHODS Atmospheric pollutants levels and meteorological data were obtained from January 2016 to December 2020. The medical database incl...

Síntomas respiratorios en agentes civiles de tránsito expuestos a smog en Quito en el año 2021
Respiratory symptoms in civil traffic police agents exposed to smog in Quito in 2021

Cambios rev. méd; 20 (2), 2021
INTRODUCCIÓN. Existe relación entre la exposición de contaminantes en el aire y problemas respiratorios que van desde síntomas leves en vías respiratorias altas hasta enfermedades que pueden comprometer la vida de los pacientes como: neumonía, enfermedad pulmonar obstructiva crónica y cáncer pulm...

Years of life lost due to premature deaths associated with air pollution: an ecological time-series study

Säo Paulo med. j; 139 (6), 2021
ABSTRACT BACKGROUND: Exposure to air pollutants is associated with hospital admissions due to cardiovascular diseases and premature deaths. OBJECTIVE: To estimate years of life lost (YLL) due to premature deaths and their financial costs. DESIGN AND SETTING: Ecological time-series study carried out...

Spatial distribution of lichen communities and air pollution mapping in a tropical city: Medellín, Colombia

Rev. biol. trop; 69 (3), 2021
Abstract Introduction: Enough scientific evidence is available on the harmful effects of air pollution on the health of human beings, fauna, flora, and ecosystems in general. The mechanical and electronical monitoring networks are the first option for the air quality diagnosis, but they do not allow a di...

Aporte de la gestión de episodios críticos a la reducción de enfermedades respiratorias en las ciudades de Los Ángeles y Chillán, Chile

Rev. méd. Chile; 149 (6), 2021
Background: In southern Chile cities, the emission of air pollutants, especially the use of firewood for heating is restricted during critical air pollution periods. Aim: To analyze how restrictions applied during the management of air pollution critical episodes have contributed to reduce emergency room...

Aerobiología de polen del olivo en las ciudades de Tacna y Arica y su relación con las enfermedades alérgicas respiratorias

Medir la concentración del polen en la atmósfera se ha convertido en objeto de interés a nivel mundial debido al aumento de las enfermedades alérgicas, ya que en muchas personas es causa de polinosis. Objetivos: se centró en la elaboración de un calendario de polen del olivo, basado en medir su con...

Efeito de política pública de restrição ao tráfego de veículos pesados na qualidade do ar do município de São Paulo: estudo de caso

Os veículos automotores movidos a diesel, classificados como fontes móveis, são importantes emissores de poluentes atmosféricos. As principais emissões associadas aos veículos diesel são o Material Particulado (MP), óxidos de nitrogênio (NOx) e dióxido de enxofre (SO2). Ao longo dos anos, norma...

Air quality assessment in Southeast Brazil during COVID-19 pandemic and lockdown: report of increased air pollution

On March 24, 2020, a partial lockdown was decreed in the state of São Paulo, Brazil, as a measure to hinder the spread of COVID-19, which consisted in prohibiting crowding and advising people to stay home, except for urgent or extremely necessary matters. Based on studies performed in other countries, t...