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101.
Behzad Jabbaripour Mohammad Hossein Sadeghi Mohammad Reza Shabgard Hossein Faraji 《Journal of Manufacturing Processes》2013,15(1):56-68
Titanium aluminide intermetallics offer an attractive combination of low density and good oxidation, corrosion and ignition resistance with unique mechanical properties. In this study two series of machining tests are designed. Firstly the powder mixed electrical discharge machining (PMEDM) of γ-TiAl by means of different powders such as aluminum, chrome, silicon carbide, graphite and iron is performed to investigate the output characteristics of surface roughness and topography, material removal rate (MRR), electrochemical corrosion resistance of machined samples and also the machined surfaces are investigated by means of EDS and XRD analyses. Secondly after selection the aluminum powder as the most appropriate kind of powder, the current, pulse on time, powder size and powder concentration are changed in different levels for overall comparison between EDM and PMEDM output characteristics. In the first setting of input machining parameters, aluminum powder improves the surface roughness of TiAl sample about 32% comparing with EDM case and also aluminum particles with the size of 2 μm, in the second setting of input parameters lead to 54% enhancement of MRR comparing with EDM case. The electrochemical corrosion results show that, corrosion resistance of the samples which are machined by graphite and chrome powders respectively are about three and two times more than the sample which is machined without powder. 相似文献
102.
Hossein Tabari Safar Marofi Mohammad Ahmadi 《Environmental monitoring and assessment》2011,177(1-4):273-287
Sixteen water quality parameters have been monitored at four stations located along the Maroon River during 1989?C2008. The trend analysis was performed on seasonal and annual time-scales using the Mann?CKendall test, the Sen??s slope estimator and the linear regression. The relationships of the water quality parameters to river discharge were also investigated. The statistical methods showed both positive and negative trends in annual water quality data. However, significant trends were detected by the statistical methods only in calcium, magnesium, sodium absorption ratio, pH, and turbidity series. The results indicated that the concentrations of the water quality parameters increased in spring and winter seasons, while the concentrations were diluted in summer and autumn seasons in the last two decades. Moreover, the highest numbers of significant trends were found in the spring and summer series, respectively. According to the regression analysis, most of the water quality parameters were negatively correlated with river discharge. 相似文献
103.
Khazdair Mohammad Reza Boskabady Mohammad Hossein 《Environmental science and pollution research international》2021,28(39):54191-54208
Environmental Science and Pollution Research - Chemical warfare (CW) agents are toxic synthetic chemicals that affect human’s health, and sulfur mustard (SM) is a well-known chemical weapon... 相似文献
104.
Abadi Dariush Ranjbar Vakil Tahmasbizadeh Masoumeh Arfaeinia Hossein Masjedi Mohammad Reza Ramavandi Bahman Poureshgh Yousef 《Environmental science and pollution research international》2023,30(9):22728-22742
Environmental Science and Pollution Research - Fresh tobacco or the smoke resulting from waterpipe and cigarette contains large amounts of polycyclic aromatic hydrocarbons (PAHs), which consumption... 相似文献
105.
106.
Torkashvand Maryam Neshat Aminreza Javadi Saman Yousefi Hossein 《Environmental science and pollution research international》2021,28(34):46704-46724
Environmental Science and Pollution Research - Hybrid and integrated techniques can be used to investigate intrinsic uncertainties of the overlay and index groundwater vulnerability assessment... 相似文献
107.
Vahidi Hossein Hoveidi Hassan Khoie Javad Kazemzadeh Nematollahi Hossein Heydari Ramezan 《Journal of Material Cycles and Waste Management》2018,20(1):450-460
Journal of Material Cycles and Waste Management - Industrial ecology and models such as material flow analysis make operational approaches in order to reuse produced waste as primary resources in... 相似文献
108.
Narges Amrollahi Biuki Ahmad Savari Mohammadsedigh Mortazavi Hossein Zolgharnein Negin Salamat 《毒物与环境化学》2013,95(10):2022-2033
Pollution of aquatic environments by trace metals is a worldwide environmental problem. Metal pollutants are increasingly being released into the environment as a result of industrialization. In this study, the bioaccumulation of cadmium and lead in young juvenile milkfish liver (Chanos chanos) was investigated after exposure to three sublethal concentration of each pollutants (1/20, 1/10, and 1/5 LC50 of 96-h LC50) for acute time 12, 24, and 96 h and subchronically for 7, 14, and 21 days. Cadmium and lead accumulation in liver increased with the exposure period and concentrations of pollutant. Compared to controls, the uptake of cadmium is much higher than that of lead. Accumulation factors showed an increase with exposure time and for lead an inverse relationship between accumulation factor and exposure concentration. The elimination of the two pollutants during the 30 days depuration was investigated after 30 days depuration time. During this phase, cadmium and lead concentrations decreased. 相似文献
109.
Ghazali Samane Azadi Hossein Janečková Kristina Sklenička Petr Kurban Alishir Cakir Sedef 《Environment, Development and Sustainability》2021,23(11):16744-16768
Environment, Development and Sustainability - Indigenous knowledge about climate change that makes adaptability necessary by coping strategies leads to the sustainability of nomadic livelihoods.... 相似文献
110.
Hossein D. Atoufi Hasti Hasheminejad David J. Lampert 《Frontiers of Environmental Science & Engineering》2020,14(6):99