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Kalan Mohammad Ebrahimi Ghobadi Hassan Taleb Ziyad Ben Adham Davoud Cobb Caroline O Ward Kenneth D Behaleh Raed Fazlzadeh Mehdi 《Environmental science and pollution research international》2021,28(30):40346-40354
Environmental Science and Pollution Research - There is mixed evidence surrounding the relationship between tobacco use and COVID-19 infection/progression. The current study investigates beliefs... 相似文献
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Labban R Veranth JM Watson JG Chow JC 《Journal of the Air & Waste Management Association (1995)》2006,56(9):1230-1242
This study tested the feasibility of using pyrolysis (Py)-gas chromatography (GC)/mass spectrometry (MS) to obtain organic chemical species data suitable for source apportionment modeling of soil-derived coarse particulate matter (PM10) dust on ambient filters. A laboratory resuspension apparatus was used with known soils to generate simulated receptor filter samples loaded with approximately 0.4 mg of PM10 dust, which is within the range of mass loading on ambient filters. Py-GC/MS at 740 degrees C generated five times more resolvable compounds than were obtained with thermal desorption GC/MS at 315 degrees C. The identified compounds were consistent with literature from Py experiments using larger samples of bulk soils. A subset of 91 organic species out of the 178 identified Py products was used as input to CMB8 software in a demonstration of source apportionment using laboratory-generated mixtures simulating ambient filter samples. The 178 quantified organic species obtained by Py of soil samples is an improvement compared with the 38 organic species obtained by thermal desorption of soils and the four functionally defined organic fractions reported by thermal/ optical reflectance. Significant differences in the concentration of specific species were seen between samples from different sites, both geographically distant and close, using analysis of variance and cluster analysis. This feasibility study showed that Py-GC/MS can generate useful source profile data for receptor modeling and justifies continued method development. 相似文献
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Massadeh A Al-Sharif L Dalale'h R Hassan M 《Environmental monitoring and assessment》2006,115(1-3):87-93
A total of two hundred and forty random samples were collected equally from mutton, liver and kidney of 40 local (Jordanian) and 40 imported Australian sheep (40 each sub sample). Fresh samples were collected from 12–18 m old sheep slaughtered in abattoirs in Jordan in 2002. Besides, 40 fresh mutton samples of imported Chinese sheep were collected from different markets. Atomic absorption spectrometry (AAS) was used to estimate the lead (Pb) content of the samples. Results indicated that Australian mutton had significantly higher (p < 0.05) mean of lead pollution than that of the local and Chinese muttons. The mean concentration of lead (mg/kg) in Australian, local and Chinese muttons was 4.30, 3.15 and 2.17, respectively. The mean concentration of lead in Australian sheep liver was significantly higher (p < 0.05) than that recorded in the local sheep liver. The mean concentration of Pb in Australian and local sheep liver was 5.69 and 4.52 mg/kg, respectively. The mean concentrations of Pb in the kidney of the Australian and local sheep were not significantly different (p > 0.05). They were 4.59 and 3.87 mg/kg, respectively.On the basis of the samples lead level, 85, 92 and 87.5% of local, Australian and Chinese mutton respectively, exceeded the international safe permissible limit of 1.0 mg/kg. Furthermore, the effect of Pb on animal and human health was discussed. 相似文献
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Afify Marwa Adel Ahmed Iman Gamal Ghareeb Alkahtani Theeb Ayedh Altulayhi Raed Ibrahim Alrowili Amjad Saud Mhrb Ghozy Sherief Bin-Jumah May Abdel-Daim Mohamed M. 《Environmental science and pollution research international》2021,28(9):10576-10588
Environmental Science and Pollution Research - This research aims to study the safety and efficacy of doravirine in the treatment of HIV-1 (human immunodeficiency virus) patients. We conducted an... 相似文献
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Raed Labban John M. Veranth John G. Watson Judith C. Chow 《Journal of the Air & Waste Management Association (1995)》2013,63(9):1230-1242
Abstract This study tested the feasibility of using pyrolysis (Py)-gas chromatography (GC)/mass spectrometry (MS) to obtain organic chemical species data suitable for source apportionment modeling of soil-derived coarse particulate matter (PM10) dust on ambient filters. A laboratory resuspension apparatus was used with known soils to generate simulated receptor filter samples loaded with ~0.4 mg of PM10 dust, which is within the range of mass loading on ambient filters. Py-GC/MS at 740 °C generated five times more resolvable compounds than were obtained with thermal desorption GC/MS at 315 °C. The identified compounds were consistent with literature from Py experiments using larger samples of bulk soils. A subset of 91 organic species out of the 178 identified Py products was used as input to CMB8 software in a demonstration of source apportionment using laboratory-generated mixtures simulating ambient filter samples. The 178 quantified organic species obtained by Py of soil samples is an improvement compared with the 38 organic species obtained by thermal desorption of soils and the four functionally defined organic fractions reported by thermal/optical reflectance. Significant differences in the concentration of specific species were seen between samples from different sites, both geographically distant and close, using analysis of variance and cluster analysis. This feasibility study showed that Py-GC/MS can generate useful source profile data for receptor modeling and justifies continued method development. 相似文献
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Sara E. Grineski Timothy W. Collins Yolanda J. McDonald Raed Aldouri Faraj Aboargob Abdelatif Eldeb 《Local Environment》2015,20(2):180-201
Scholars have recognised a climate gap, wherein poor communities face disproportionate impacts of climate change. Others have noted that climate change and economic globalisation may mutually affect a region or social group, leading to double exposure. This paper investigates how current and changing patterns of neighbourhood demographics are associated with extreme heat in the border city of Juárez, Mexico. Many Juárez neighbourhoods are at-risk to triple exposures, in which residents suffer due to the conjoined effects of the global recession, drug war violence, and extreme heat. Due to impacts of the recession on maquiladora employment and the explosion of drug violence (2008–2012), over 75% of neighbourhoods experienced decreasing population density between 2000 and 2010 and the average neighbourhood saw a 40% increase in the proportion of older adults. Neighbourhoods with greater drops in population density and increases in the proportion of older residents over the decade are at significantly higher risk to extreme heat, as are neighbourhoods with lower population density and lower levels of education. In this context, triple exposures are associated with a climate gap that most endangers lower socio-economic status and increasingly older-aged populations remaining in neighbourhoods from which high proportions of residents have departed. 相似文献
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Ernesto Di Maio Raed Mali Salvatore Iannace 《Journal of Polymers and the Environment》2010,18(4):626-633
Conventional direct melt mixing technology was investigated on zein and kafirin, two vegetable proteins extracted, respectively,
from maize and sorghum. A lab scale internal mixer has been used to thoroughly study the thermo-plasticization process of
the proteins with several plasticizers. Different compositions were investigated under different processing conditions. In
particular, the lengthy procedures of forming the protein/solvent/plasticizer solution followed by drying or the protein/plasticizer
emulsion followed by the precipitation of the extrudable resin, reported in the literature for these systems, were avoided
and the protein and plasticizer were directly fed into the mixer to obtain a plastic-like material. The effect of plasticizer
type and content and mixing process variables on the mechanical properties was analyzed. Compression molded slabs were transparent,
strong and flexible, with properties similar to the cast films reported in the literature, prepared with the same type of
plasticizers. However, lower plasticizer content was sufficient to produce equally flexible films, proving an enhanced plasticization
efficiency of the mixing process, as compared to casting. 相似文献
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