Air Quality Parameters
Mostrando 1-12 de 118 artigos, teses e dissertações.
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1. The Contribution of Meteorological Parameters and the COVID-19 Partial Lockdown on Air Quality in Rio de Janeiro, Brazil
This study evaluated the pollutant levels (NO2, SO2, CO, and O3), air quality index (AQI) and the influence of meteorological variables and coronavirus disease (COVID-19) pandemic on the air quality in Rio de Janeiro. The data set used comprises periods before (March-April, 2019) and during pandemic (March-April, 2020). According to the AQI results, on most
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Fatty acid profile and physicochemical, optical and thermal characteristics of Campomanesia adamantium (Cambess.) O. Berg seed oil
Abstract The aim of this study was to characterize the oil obtained from seeds of Campomanesia adamantium by physicochemical quality parameters, oxidative stability, antioxidant activity, quality indexes, optical and thermal stability and its fatty acid profile. These seeds were a relevant source of oil (83 mg g-1) with high potential antioxidant activity (I
Food Sci. Technol. Publicado em: 2020-12
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3. Air drying of macauba fruits: maintaining oil quality for biodiesel production
ABSTRACT. Macauba fruits are oil-rich drupes with high moisture content at harvest. This feature can affect the chemical properties of the oil and increase the costs of biodiesel production. Therefore, it is necessary to adopt postharvest strategies to ensure oil quality. The aim of this work was to evaluate the effect of drying macauba fruit on the quality
Acta Sci., Agron.. Publicado em: 21/10/2019
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4. Indoor Air Quality in the Hospital: The Influence of Heating, Ventilating and Conditioning Systems
Abstract Clean, fresh air is the most important requirement for good indoor air quality (IAQ) in all buildings, but it is especially important with regard to the environments within hospitals and other healthcare facilities. The literature indicates that buildings with heating, ventilating and air conditioning (HVAC) systems may have an increased risk of sic
Braz. arch. biol. technol.. Publicado em: 05/09/2019
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5. Mathematical drying kinetics modeling of jackfruit seeds (Artocarpus heterophyllus Lam.)
RESUMO A jaca (Artocarpus heterophyllus Lam.) é uma fruta com polpa rica em carboidratos, cálcio, fósforo, ferro e vitaminas do complexo B. No processamento da polpa é gerada uma grande quantidade de resíduos, onde incluem-se as sementes. Consumidas após cozimento, podem também passar por torra, moagem e incorporação em produtos de panificação. Co
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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6. RAINFALL WATER QUALITY UNDER DIFFERENT FOREST STANDS
ABSTRACT The rainfall-forest canopy interaction can impact on the chemical and physical rain-water features and is expected that different forests will have different effects on throughfall rain-water quality parameters. This study aimed (i) to compare chemical and physical rain-water quality variables observed in both gross precipitation and throughfall mea
CERNE. Publicado em: 20/05/2019
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7. MODELOS FOTOQUÍMICOS SIMPLES COMO FERRAMENTA PARA O GERENCIAMENTO DA QUALIDADE DO AR
Atmospheric processes in an urban scenario are very complex and depend on meteorological parameters, emission, transport and deposition processes and the chemical mechanism. Simple air quality models can be used to understand the main aspects of ozone formation and provide information to adopt pollution control strategies. In this work the detailed simulatio
Quím. Nova. Publicado em: 02/05/2019
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8. Processing and physical and physiological quality of the native forest seeds of Vernonanthura discolor
ABSTRACT. The objective was to study the processing of Vernonanthura discolor seeds, evaluating their physical and physiological qualities and defining parameters for purity analysis and determine the weight of one thousand seeds. The seeds extracted from the infructescences were processed in a blower, testing combinations of openings of the calibration valv
Acta Sci., Agron.. Publicado em: 17/12/2018
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9. The effect of hot air, vacuum and microwave drying on drying characteristics, rehydration capacity, color, total phenolic content and antioxidant capacity of Kumquat (Citrus japonica)
Abstract Sliced kumquats were dried by using three different drying methods, microwave (375 W), hot air (70 and 80 °C), and vacuum (70 and 80 °C with 100 and 300 mbar) to determine drying characteristics, antioxidant capacity and total phenolic content and color. All color parameters (L, a, b, Cab, ΔE and h° ) changed depending on the drying methods. Pa
Food Sci. Technol. Publicado em: 22/10/2018
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10. Evaluation of the oil flow using the MQL technique applied in the cylindrical plunge grinding of AISI 4340 steel with cbn grinding wheel
Abstract The grinding process is defined as an abrasive cutting action of a tool known as grinding wheel, which is submitted to high rotations, promoting excellent finishing and accuracy in dimensions, respecting the parameters established in each project. During the machining, the cutting edges of the abrasive grains undergo wearing and this increases the c
REM, Int. Eng. J.. Publicado em: 2018-07
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11. Respiratory and Other Health Risks among Poultry-Farm Workers and Evaluation of Management Practices in Poultry Farms
ABSTRACT The current study was conducted on eight poultry farms in Lahore and Sheikhupura to monitor environmental conditions, determine workers’ health status and assess the implementation of standard management practices. Environmental monitoring, a health questionnaire survey and a respiratory function test were carried out. Seventy-one respondents were
Rev. Bras. Cienc. Avic.. Publicado em: 2018-03
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12. Microclimate alterations caused by agricultural hail net coverage and effects on apple tree yield in subtropical climate of Southern Brazil
ABSTRACT The use of hail net coverage on plants is an effective measure to mitigate damage caused by hailstorms. In southern Brazil, areas with apple orchards under hail net coverage have increased in recent years. However, little is known about the possible effects on the microclimate and, consequently, on plant growth, crop yield and fruit quality. The hyp
Bragantia. Publicado em: 18/12/2017