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A three dimensional diffusion model has been developed for computing the concentration of PM10 from Kerman Cement Plant, Iran.
This model incorporates source-related factors, meteorological factors, surface roughness, and settling particles to estimate
pollutant concentration from continuous sources. The study focused on the local environmental impact of Kerman Cement Plant.
The performance of the model was found to be in good agreement with measured data; the average absolute percent deviation
is 25.53%. In addition, the result of this modeling shows that the PM10 concentration in the ambient air at distances of about
600–1,400 m from the stacks is higher than the WHO guidelines of an annual average of 260 μg/m3. 相似文献
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Vahid Eisavi Saeid Homayouni Ahmad Maleknezhad Yazdi Abbas Alimohammadi 《Environmental monitoring and assessment》2015,187(5):291
Thematic mapping of complex landscapes, with various phenological patterns from satellite imagery, is a particularly challenging task. However, supplementary information, such as multitemporal data and/or land surface temperature (LST), has the potential to improve the land cover classification accuracy and efficiency. In this paper, in order to map land covers, we evaluated the potential of multitemporal Landsat 8’s spectral and thermal imageries using a random forest (RF) classifier. We used a grid search approach based on the out-of-bag (OOB) estimate of error to optimize the RF parameters. Four different scenarios were considered in this research: (1) RF classification of multitemporal spectral images, (2) RF classification of multitemporal LST images, (3) RF classification of all multitemporal LST and spectral images, and (4) RF classification of selected important or optimum features. The study area in this research was Naghadeh city and its surrounding region, located in West Azerbaijan Province, northwest of Iran. The overall accuracies of first, second, third, and fourth scenarios were equal to 86.48, 82.26, 90.63, and 91.82 %, respectively. The quantitative assessments of the results demonstrated that the most important or optimum features increase the class separability, while the spectral and thermal features produced a more moderate increase in the land cover mapping accuracy. In addition, the contribution of the multitemporal thermal information led to a considerable increase in the user and producer accuracies of classes with a rapid temporal change behavior, such as crops and vegetation. 相似文献
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Samira Valiyari Rana Jahanban-Esfahlan Fateme Zare Shahneh Saeid Yaripour Abbas Delazar 《毒物与环境化学》2013,95(7):1208-1220
Breast cancer is the most common cancer in women. Therefore, there is an urgent need to identify and develop therapeutic strategies against this deadly disease. This study is the first to investigate the cytotoxic and apoptotic effects of Scrophularia oxysepala in MCF-7 human breast cancer cells. Dichloromethane, methanol and n-hexane extracts of Scrophularia oxysepala were examined. The 3-(4,5-dimethylethiazol-2-yl)-2,5-diphenyltetrazolium (MTT) reduction and trypan-blue exclusion assays were performed in MCF-7 cells as well as control cell line MCF10A to analyze the cytotoxic activity of the plant. Furthermore, the apoptosis-inducing action of extracts of the plant was evaluated using cell death detection ELISA, the terminal deoxynucleotide transferase dUTP nick end labeling (TUNEL) assay, Western blotting and real-time polymerase chain reaction (PCR). The results showed that dichloromethane and methanol extracts significantly inhibited cell growth and viability without inducing damage to MCF10A cells. Cell death detection ELISA, morphological changes of cells in TUNEL assay, Western blot detection of poly (ADP-ribose) polymerase (PARP) cleavage and increase in the mRNA expression levels of p-53, caspase-3 and c-myc showed that the induction of apoptosis was the main mechanism of cell death. Our results strongly suggest that this plant may contain potential bioactive compound(s) for the treatment of breast cancer. 相似文献
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Saeid Gitipour Saeid Firouzbakht Ehsan Mirzaee Masoumeh Alimohammadi 《Environmental monitoring and assessment》2014,186(6):3541-3552
For years, the Dorson Abad region has been extremely polluted by Tehran Oil Refinery due to leaking from its underground pipelines, storage tanks, and evaporation ponds. To assess the concentrations of hazardous polycyclic aromatic hydrocarbon (PAH) compounds, soil samples were collected from the grounds at and adjacent to a polluted stream located in the study area. The samples were then analyzed, and the results revealed that 12 of the 16 USEPA PAHs were noticeably present in the soil, which, among them, benzo[k]fluoranthene and chrysene had the highest concentrations with averages of 357.17 and 173.38 mg/kg, respectively. A comparison of the obtained concentrations with the soil screening levels indicated that both benzo[k]fluoranthene and chrysene concentrations were substantially higher than EPA screening level values, signifying the necessity of soil remediation for these contaminants in the area. Techniques such as soil washing/flushing, high temperature thermal desorption, and solidification/stabilization were investigated for treatment of the contaminated soil; solidification/stabilization is recommended as an applicable and cost-effective remediation method for Dorson Abad due to the size of the region, relatively low cost of the binder (cement), and low volatility of benzo[k]fluoranthene and chrysene. 相似文献
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Hanning Sara M. Hua Changji Baroutian Saeid Burrell Rob Taylor Matthew Wright L. James Svirskis Darren 《Journal of Material Cycles and Waste Management》2022,24(4):1603-1611
Journal of Material Cycles and Waste Management - This study aimed to quantify the amount of pharmaceutical waste produced in New Zealand, and determine the composition of pharmaceutical waste from... 相似文献
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Li Bryan Timings Elizabeth Baroutian Saeid 《Journal of Material Cycles and Waste Management》2023,25(2):1239-1246
Journal of Material Cycles and Waste Management - Leachate, a toxic and complex liquid, is a growing problem for municipal solid waste landfills. This study investigated non-catalytic and... 相似文献
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Rezaei Saeid Behnamian Javad 《Environmental science and pollution research international》2022,29(54):81830-81863
Environmental Science and Pollution Research - Competition to gain more market share leads to the development of a dynamic environment and the fulfillment of an improvement cycle in supply... 相似文献
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Azadikhah Komeil Davallo Mehran Kiarostami Vahid Mortazavinik Saeid 《Environmental science and pollution research international》2022,29(24):36040-36056
Environmental Science and Pollution Research - This research studied the modeling of malachite green (MG) adsorption onto novel polyurethane/SrFe12O19/clinoptilolite (PU/SrM/CLP) nanocomposite from... 相似文献