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Wyświetlanie 1-3 z 3
Tytuł:
Association between coal and firewood combustion and hospital admissions and mortality in Chile 2015 - an ecological approach
Autorzy:
Paredes, M.C.
Munoz, M.P.
Salgado, M.V.
Maldonado, A.K.
Powiązania:
https://bibliotekanauki.pl/articles/2085865.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
air pollution
biomass
mortality
hospitalization rate
Opis:
Introduction and objective. Burning coal and firewood generates toxic emissions that are associated with respiratory illness, cardiovascular disease, and even death. The aim of the study is to evaluate the association between county-level prevalence of household coal and firewood use and health outcomes, including total, respiratory, and cardiovascular mortality, as well as total and respiratory hospitalization rates. Materials and method. The ecological study included data on the use of household coal and firewood in 139 counties obtained from the 2015 Chilean National Socio-economic Characterization Survey. Total, respiratory, and cardiovascular mortality, as well as total and respiratory hospitalization rates, were obtained from the Department of Health Statistics. Poisson models with robust error variance, Pearson linear correlation coefficients, and scatterplots were used to explore associations between household coal and firewood use and morbidity-mortality, stratifying by geographic zone. Results. Total, respiratory, and cardiovascular mortality and total and respiratory hospitalization rates were 5.7 per 1,000, 552 per 100,000, 157 per 100,000, 92.5 per 1000, and 8.8 per 1000 inhabitants, respectively. The median prevalence of coal use for residential cooking, heating, or water heating was 3.64%, while the median prevalence of firewood combustion was 12%. In southern counties, age- and gender-adjusted respiratory mortality increased 2.02 (95% CI: 1.17–3.50), 1.5 (95% CI: 1.11–1.89), and 1.76-fold (95% CI: 1.19–2.60) for each percentage increase in household coal and firewood use for heating, cooking and heating water, respectively. Conclusions. The prevalence of household coal and firewood used for heating and cooking was positively correlated with respiratory mortality and hospitalization in southern zone counties.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 3; 418-426
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of climatic patterns on runoff and irrigation water allocation in an arid watershed of northern Mexico
Autorzy:
Cohen, I. S.
Ibarra, M. A. I.
Arriaga, G. E.
Paredes, J. C.
Valle, M. A. V.
Bustamante, W. O.
Powiązania:
https://bibliotekanauki.pl/articles/108465.pdf
Data publikacji:
2018
Wydawca:
Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Tematy:
ENSO
SPI
watershed
cropped area
irrigation
warunki klimatyczne
nawadnianie
zlewnia
Meksyk
Opis:
The uncertainty of water availability is the main problem in planning for water resources in watersheds of agricultural drylands. Water availability for different uses depends on the runoff that is generated in the upper portion of the watersheds, where there are higher elevations and lower temperatures. Proximity to the ocean is a main factor that defines rainfall amounts. In this research we linked the effects of El Niño to a regional Standardized Precipitation Index (SPI) and the subsequent impact on runoff production and irrigation water allocation. Findings indicate the cascading impacts of the El Niño on the SPI, the SPI on the runoff discharge to the irrigation reservoir, and the final impact on the planted area within the irrigation district. An optimization procedure was applied to maximizing net income in agriculture under different water availability scenarios. The restrictions to the optimization model were: total available water, crop water demand, and available land. Local criteria for defining the maximum allowable planted area by crop also were taken into account. The analysis with various water availability scenarios demonstrated that with limited amounts of water for irrigation, forage area would be limited, thereby increasing the area of crops with lower water demands. In both scenarios the area of forage maize was reduced from 11300 to 1764 ha. Increasing irrigation water use efficiency may save water for expanding the irrigated area, or for other uses.
Źródło:
Meteorology Hydrology and Water Management. Research and Operational Applications; 2018, 6, 2; 59-66
2299-3835
2353-5652
Pojawia się w:
Meteorology Hydrology and Water Management. Research and Operational Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical simulations of sandwich structures under lateral compression
Autorzy:
Estrada, Quirino
Szwedowicz, Dariusz
Vergara, Julio C.
Solis, José
Paredes, Miguel A.
Wiebe, Lara
Silva, Jesús M.
Powiązania:
https://bibliotekanauki.pl/articles/118167.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
sandwich structures
crashworthiness
finite element method
struktury warstwowe
odporność na zderzenia
metoda elementów skończonych
Opis:
The current paper analyzes the effect of the cross-section on the energy absorption capabilities of sandwich structures under compressive loads. For this purpose, several cross-section including triangular, square, hexagonal and circular shapes were analyzed using Abaqus software. According to the results the hexagonal shape is the most favorable cross-section to increase the crashworthiness performance of the structures up to 700% of CFE with respect to the square arrangement.
Źródło:
Applied Computer Science; 2019, 15, 2; 31-41
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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