نتایج جستجو برای: polluant concentration
تعداد نتایج: 381037 فیلتر نتایج به سال:
nowadays, air pollution is a global problem that has had significant growth by technology development, population growth andindustrial development. industrial development brought natural resources deterioration, more manufacturing products, and more environmental pollutants. if pollutant won’t be controlled, human-being and wildlife will face the critical risks. significant release and critical...
As a part of the development of a new design process of close capture exhausts systems for machining devices, based on fluid flows modeling, an experimental apparatus was realised, which recreates a machining operation in experimentally controlled conditions. The properties of the obtained spray of solid particles were entirely characterised using Phase Doppler Anemometry (PDA), in order to be ...
CoFe 2 O 4 and NiFe spinel ferrites were obtained by microwave-assisted sol–gel combustion synthesis using three different types of chelating/combustion agents: maleic acid, citric urea. The nanomaterials produced characterized from the structural, morphological, textural, magnetic viewpoints. prepared employed as adsorbents for removal Orange-II dye synthetic wastewaters. nickel ferrite sample...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
a simple, rapid and low-cost scanner spectroscopy method for the glucose determination by utilizing glucose oxidase and cdte/tga quantum dots as chromoionophore has been described. the detection was based on the combination of the glucose enzymatic reaction and the quenching effect of h2o2 on the cdte quantum dots (qds) photoluminescence.in this study glucose was determined by utilizing glucose...
با افزایش تعداد سویه های باکتریایی مقاوم به آنتی بیوتیک های مختلف و قیمت بالای برخی آنتی بیوتیک ها نیاز به داروهای گیاهی موثر، در دسترس و ارزان احساس می شود. این مطالعه به منظور مقایسه اثرضدباکتریایی عصاره های قطبی و غیر قطبی دوره های مختلف رویشی گیاه اسپند (peganum harmala) بر روی باکتری های آئروموناس هیدروفیلا (aeromonas hydrophila)، فتوباکتریوم دامسلا (photobacterium damsela) و لاکتوکوکوس گا...
Transient water table systems under the influence of decaying groundwater mounds are studied in terms of the Dupuit-Forcheimer approximation, its linearization and linear potential theory. Parabolic mounds spreading and shrinking due to gravity and évapotranspiration are derived from the general class defined by PolubarinovaKochina (1945). The penetration curves are calculated as characteristic...
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