Mostrando 2,841 - 2,860 Resultados de 77,560 Para Buscar '"AIR"', tiempo de consulta: 0.91s Limitar resultados
  1. 2841
    por Malpede, Maurizio, Percoco, Marco
    Publicado 2021
    “…These results indicate that the lockdown had a significant positive impact in terms of lives saved and improved air quality.…”
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  2. 2842
    “…This community-based participatory research (CBPR) project investigated indoor air quality issues on two Rocky Mountain west reservations. …”
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  3. 2843
    “…BACKGROUND AND AIM: A potential correlation between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and air pollution has been suggested in some nationwide studies. …”
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  4. 2844
    “…This study aims to incorporate fairness in finding optimal air ambulance base locations. METHODS: We solve multiple advanced mathematical optimization models to determine optimal helicopter base locations, with different optimization criteria related to the level of aversion to inequality, including the utilitarian, Bernoulli-Nash and iso-elastic social welfare functions. …”
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  5. 2845
  6. 2846
    “…Urban air pollution can have negative short- and long-term impacts on health, including cardiovascular, neurological, immune system and developmental damage. …”
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  7. 2847
    “…This lockdown resulted in a good recovery in environmental health, where air pollutants levels dramatically decreased. THEORY: There are two relations between air pollution and COVID-19, one is before the disease spread, and the other is after. …”
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  8. 2848
    “…The composite meshes showed porous structures, good air permeability (164 ± 16 mm/s) and air filtration efficiency 96.4% for PM 0.3, 100% for PM 2.5, with pressure drop (108 Pa). …”
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  9. 2849
    “…In recent decades, seasonal allergic rhinitis (SAR) prevalence has increased and recent studies have shown that air pollutants, such as diesel exhaust particles (DEP), can increase inflammatory and allergic biomarkers. …”
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  10. 2850
  11. 2851
    por Liu, Lei, Ma, Xin, Wen, Wei, Sun, Chang, Jiao, Jiao
    Publicado 2021
    “…Linfen in China’s Shanxi Province suffers severe air pollution in winter. Understanding the characteristics of air pollution and providing scientific support to mitigate such pollution are urgent matters. …”
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  12. 2852
    “…Exposure to higher levels of ambient air pollution is a known risk factor for cardiovascular disease but long-term effects of pollution exposure on the pulmonary vessels are unknown. …”
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  13. 2853
    “…The increased concern of the virus spread in confined spaces due to meteorological factors has sequentially fostered the need to improve indoor air quality. OBJECTIVE: This paper aims to review control measures and preventive sustainable solutions for the future that can deliberately help in bringing down the impact of declined air quality and prevent future biological attacks from affecting the occupant’s health. …”
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  14. 2854
    “…For the requirement in container nursery culture that growing media should be achieved the appropriate degree compaction, this paper presents an experiment on the compaction dynamics of air-dried soil under repetitive drop shocks, as a preliminary step toward the mechanization of this compaction method. …”
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  15. 2855
  16. 2856
    por Burgmann, Sebastian, Janoske, Uwe
    Publicado 2021
    “…The system can support additional ventilation strategies with fresh air, especially in cold seasons.…”
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  17. 2857
    “…To control and navigate micro air vehicles (MAVs) efficiently, there is a need for small, lightweight, durable, sensitive, fast, and low-power airspeed sensors. …”
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  18. 2858
  19. 2859
    “…There is increasing interest in understanding the role of air pollution as one of the greatest threats to human health worldwide. …”
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  20. 2860
    por He, Fei, Jeon, Woojung, Choi, Wonyong
    Publicado 2021
    “…Photocatalytic air purification is a promising technology that mimics nature’s photochemical process, but its practical applications are still limited despite considerable research efforts in recent decades. …”
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