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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 19) Peer-ReviewedThis study presents the source apportionment of PM.sub.2.5 performed by positive matrix factorization (PMF) on data presented here which were collected at urban (Institute of Atmospheric Physics - IAP) and rural (Pinggu...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 17) Peer-ReviewedSecondary organic aerosol (SOA) plays a significant role in atmospheric chemistry. However, little is known about the vertical profiles of SOA in the urban boundary layer (UBL). This knowledge gap constrains the SOA...
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From:PLoS ONE (Vol. 16, Issue 8) Peer-ReviewedBackground To assess the efficacy and safety of restrictive versus liberal red blood cell transfusion thresholds in very low birth weight infants. Methods We searched MEDLINE, EMBASE, and Cochrane database without...
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From:Atmospheric Chemistry and Physics (Vol. 18, Issue 4) Peer-Reviewed
This study investigates the seasonal variation, molecular distribution and stable carbon isotopic composition of diacids, oxocarboxylic acids and α-dicarbonyls to better understand the sources and formation...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 3) Peer-ReviewedNitro-aromatic compounds (NACs) were measured hourly at a rural site in China during wintertime to monitor the changes due to local and regional impacts of biomass burning (BB). Concurrent and continuous measurements of...
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From:Atmospheric Chemistry and Physics (Vol. 20, Issue 1) Peer-ReviewedIn order to better understand the molecular composition and sources of organic aerosols in Tianjin, a coastal megacity in North China, ambient fine aerosol (PM.sub.2.5) samples were collected on a day/night basis from...
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From:Mathematical Problems in EngineeringPeer-ReviewedThe load distribution model of the planetary roller screw mechanism (PRSM) is established on the basis of Hertz contact theory. The objective is to obtain a friction torque model of the PRSM in roller jamming. An example...
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From:Atmospheric Chemistry and Physics (Vol. 18, Issue 4) Peer-ReviewedThis study investigates the seasonal variation, molecular distribution and stable carbon isotopic composition of diacids, oxocarboxylic acids and α-dicarbonyls to better understand the sources and formation...
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From:Atmospheric Chemistry and Physics (Vol. 21, Issue 7) Peer-ReviewedEpidemiological studies have consistently linked exposure to PM.sub.2.5 with adverse health effects. The oxidative potential (OP) of aerosol particles has been widely suggested as a measure of their potential toxicity....
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From:PLoS ONE (Vol. 15, Issue 12) Peer-ReviewedBackground Observational studies suggest that low 25-hydroxyvitamin D status is common and has been associated with higher mortality in critically ill patients. This study aim to investigate whether vitamin D...