Mostrando 4,421 - 4,440 Resultados de 77,560 Para Buscar '"AIR"', tiempo de consulta: 0.36s Limitar resultados
  1. 4421
  2. 4422
  3. 4423
    “…BACKGROUND: With the increase of motor vehicles, ambient air pollution related to traffic exhaust has become an important environmental issue in China. …”
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  4. 4424
    “…RESULTS: Recurrent primary spontaneous pneumothorax was the cause of persistent air leak in all cases. Air leaks were expiratory only in 54.0% of cases. …”
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  5. 4425
    “…One of the EPHT objectives is to track the public health impact of ambient air pollution with analyses that are timely and relevant to state and local stakeholders. …”
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  6. 4426
  7. 4427
  8. 4428
    “…BACKGROUND: In recent years there has been renewed interest in the use of air ionizers to control the spread of infection in hospitals and a number of researchers have investigated the biocidal action of ions in both air and nitrogen. …”
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  9. 4429
    “…CONCLUSION: Idiopathic and presumed IV-induced pneumocephalus could be considered in the workup of ED patients with unexplained intracranial air on head CT if there are no findings of pathological causes for the pneumocephalus on history and physical examination and if the head CTs show a characteristic distribution of air limited to the cranial venous system. …”
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  10. 4430
    por Jia, Chunrong, Batterman, Stuart
    Publicado 2010
    “…We evaluate the environmental literature on naphthalene published since 1990, drawing on nearly 150 studies that report emissions and concentrations in indoor, outdoor and personal air. While naphthalene is both a volatile organic compound and a polycyclic aromatic hydrocarbon, concentrations and exposures are poorly characterized relative to many other pollutants. …”
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  11. 4431
    “…Air pollution was evaluated by air pollution index (API) derived from the concentrations of particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide and ground-level ozone. …”
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  12. 4432
    “…We describe a case report of epidural air artifact in a cervical MRI after cervical epidural injections.…”
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  13. 4433
    “…Our results highlight the benefits, for all parties, when higher income countries provide additional healthcare resources for lower income countries, particularly those that have high air traffic volumes. In particular, international authorities should prioritize aid to those poorest countries where both the risk of emerging infectious diseases and air traffic volume is highest. …”
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  14. 4434
    “…A modified procedure was developed for the measurement of the effective air exchange rate, which represents the relationship between the pollutants emitted from indoor sources and the residents’ level of exposure, by placing the dosers of tracer gas at locations that resemble indoor emission sources. …”
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  15. 4435
    “…BACKGROUND: Although studies have demonstrated that air pollution is associated with exacerbation of asthma symptoms in children with asthma, little is known about the susceptibility of subgroups, particularly those with atopy. …”
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  16. 4436
    “…To determine clinical and virologic characteristics of pandemic (H1N1) 2009 in Buenos Aires, Argentina, we conducted real-time reverse transcription–PCR on samples from patients with influenza-like illness, June 11–30, 2009. …”
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  17. 4437
    “…OBJECTIVES: To determine tobacco point of sale advertising prevalence in Guatemala City, Guatemala and Buenos Aires, Argentina. METHODS: Convenience stores (120 per city) were chosen from randomly selected blocks in low, middle and high socioeconomic neighbourhoods. …”
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  18. 4438
    por Prignot, Jacques J.
    Publicado 2011
    “…Since the publication of the US Surgeon General Reports in 1996 and 2006 and the report of the California Environmental Protection Agency in 1999, many reports have appeared on the contribution of air and biomarkers to different facets of the secondhand smoke (SHS) issue, which are the targets of this review. …”
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  19. 4439
    “…We assessed long-term exposure to traffic-related air pollution using a validated spatiotemporal land-use regression model for BC. …”
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  20. 4440
    “…BACKGROUND: The relationship between traffic emissions and mobile-source air pollutant concentrations is highly variable over space and time and therefore difficult to model accurately, especially in urban settings with complex terrain. …”
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