Mostrando 3,261 - 3,280 Resultados de 77,560 Para Buscar '"AIR"', tiempo de consulta: 0.38s Limitar resultados
  1. 3261
    “…The results for the lower end of the dose range are in agreement with linear models fitted in studies of moderate air pollution and episode studies.…”
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  2. 3262
  3. 3263
    por Ott, W R
    Publicado 1999
    “…This table permits easy comparisons of indoor concentrations with air quality guidelines and indoor standards for different combinations of active smoking counts and air exchange rates. …”
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  4. 3264
  5. 3265
    por Khesina AYa
    Publicado 1994
    “…The content of major carcinogenic and genotoxic polyaromatic hydrocarbons (PAH) in urban air, vehicle, and industrial emissions is assessed. …”
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  6. 3266
    por Lippmann, M
    Publicado 1989
    “…We also concluded that the O3-associated responses were potentiated by the presence of other air pollutants.…”
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  7. 3267
    por Larson, T V
    Publicado 1989
    “…For H2SO4 particles initially at 90% relative humidity in ambient air that are inhaled via the nose or mouth, there is significant deposition of acid in the airways even in the presence of typical values of respiratory NH3. …”
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  8. 3268
    por Lippy, B E, Turner, R W
    Publicado 1991
    “…These levels have established tremendous precedent and are tempting reference values in the relatively new field of indoor air quality evaluations where validated criteria are greatly needed. …”
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  9. 3269
    por Andelman, J B
    Publicado 1985
    “…Volatile halogenated organic chemicals are found in indoor and outdoor air, often at concentrations substantially above those in remote, unpopulated areas. …”
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  10. 3270
  11. 3271
    “…BACKGROUND: We quantified the air quality benefits of a smoke-free workplace law in Boston Massachusetts, U.S.A., by measuring air pollution from secondhand smoke (SHS) in 7 pubs before and after the law, comparing actual ventilation practices to engineering society (ASHRAE) recommendations, and assessing SHS levels using health and comfort indices. …”
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  12. 3272
  13. 3273
    “…BACKGROUND: Experimental data suggest that asthma exacerbation by ambient air pollutants is enhanced by exposure to endotoxin and allergens; however, there is little supporting epidemiologic evidence. …”
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  14. 3274
    “…BACKGROUND: In this study we compared cancer risks from organic hazardous air pollutants (HAPs) based on total personal exposure summed across different microenvironments and exposure pathways. …”
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  15. 3275
  16. 3276
    “…Expression of autoimmune regulator (Aire) by thymic medullary epithelial cells (MECs) is critical for central tolerance of self. …”
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  17. 3277
    por Gates, Frederick L.
    Publicado 1917
    “…The regulation of the air stream both to and from the ether bottle controls the mixture accurately and is an essential feature of the valve. …”
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  18. 3278
    por Lurie, Max B.
    Publicado 1930
    “…The incidence of this tuberculosis acquired by air-borne contagion increases with the duration and intensity of the exposure up to a certain point. 5. …”
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  19. 3279
    “…Reexposure of animals following an interval of 40 days in normal air subsequent to the first exposure of 72 days, does not produce any clinical or pathological changes. …”
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  20. 3280
    “…With lesser concentrations of propylene glycol, rapid and marked reduction in the number of air-borne bacteria occurred, but complete sterilization of the air required a certain interval of time. …”
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