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1.
Nature ; 2024 Sep 02.
Artículo en Inglés | MEDLINE | ID: mdl-39223274
3.
Nature ; 633(8030): S12-S14, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39294355
11.
Nat Geosci ; 17(8): 747-754, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39131449

RESUMEN

Haze in Beijing is linked to atmospherically formed secondary organic aerosol, which has been shown to be particularly harmful to human health. However, the sources and formation pathways of these secondary aerosols remain largely unknown, hindering effective pollution mitigation. Here we have quantified the sources of organic aerosol via direct near-molecular observations in central Beijing. In winter, organic aerosol pollution arises mainly from fresh solid-fuel emissions and secondary organic aerosols originating from both solid-fuel combustion and aqueous processes, probably involving multiphase chemistry with aromatic compounds. The most severe haze is linked to secondary organic aerosols originating from solid-fuel combustion, transported from the Beijing-Tianjing-Hebei Plain and rural mountainous areas west of Beijing. In summer, the increased fraction of secondary organic aerosol is dominated by aromatic emissions from the Xi'an-Shanghai-Beijing region, while the contribution of biogenic emissions remains relatively small. Overall, we identify the main sources of secondary organic aerosol affecting Beijing, which clearly extend beyond the local emissions in Beijing. Our results suggest that targeting key organic precursor emission sectors regionally may be needed to effectively mitigate organic aerosol pollution.

16.
Nature ; 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39026068
17.
Gastroenterol Clin North Am ; 53(3): 509-519, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39068011

RESUMEN

Intestinal failure (IF) remains as a life-threatening medical condition worldwide, but the disparity on the type and quality of medical care available, together with the different limitations to access among individual countries or regions, turned IF assessment and therapy into a difficult matter, which becomes a major hazard for the developing world. This article aims to provide an update regarding definitions used, the current general worldwide data, the developments, achievements, and the different access alternatives in Latin-America, Middle East, and Asia to exemplify what can be done to help patients with IF.


Asunto(s)
Países en Desarrollo , Humanos , Intestinos/trasplante , Enfermedades Intestinales/terapia , Enfermedades Intestinales/cirugía , Trasplante de Órganos , Accesibilidad a los Servicios de Salud
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