نتایج جستجو برای: infiltration
تعداد نتایج: 52822 فیلتر نتایج به سال:
In this research, infiltration behavior of W-Ag composite compacts with Nickel and Cobalt as additives has been investigated. Nickel and Cobalt were added to Tungsten powder by two distinct methods: mixing elementally and reduction of salt solution. The coated Tungsten powders were compacted under controlled pressures to make porous skeleton with 32-37 vol. % porosity. Infiltration process was ...
Skid trails are the main routes for wood extraction and also the main source of runoff and sediment production in Forests. This research was conducted in Kuhmiyan forest of Golestan Province to determine infiltration, compaction, strength (resistance to penetration) and moisture content in three treatment including control (in the forest), wheel ruts and middle of skid trail were measured in th...
introduction: many patients suffer from mild, moderate or severe pain during or after root canal therapy. theoretically, post-operative pain control can be achieved by using long-acting local anesthetics. the aim of this study was to evaluate the efficacy of a long acting anesthesia, bupivacaine, on preventing post-operative pain associated with endodontic treatment, and to compare it with lido...
background: neutrophil infiltration plays an important role in inflammatory reactions following spinal cord injury (sci) and these cells cause substantial secondary tissue damage. the purpose of this study was to determine the effect of oleuropein (oe) on myeloperoxidase (mpo) activity as an index of neutrophil infiltration. methods: rats were randomly divided into four groups of 7 rats each as...
use of the double ring infiltrometer to measure soil water infiltration in center pivot irrigation systems is not an accurate approach; because the real conditions of infiltration under center pivot sprinklers is different from what happens in the double ring. in this study, the infiltration parameters were determined under real conditions of a center pivot system. for this purpose, a single ri...
ارائه یک مدل شبکه عصبی مصنوعی برای تخمین نفوذ آب در خاک بر اساس پارامترهای مدلهای SCS و کوستیاکوف
Infiltration of water into the soil accounts as a phenomenon in which most of researchers and scientists are interested so it acts a prominent role in the water cycling. Owing to temporal and spatial variation of infiltration, measuring of it in a direct way requires a long time and high cost. Thus, using a method for measuring the soil infiltration in an indirect way instead of direct way for ...
infiltration in furrow irrigation is 2-d which depends on both time and surface characteristics at which infiltration occurs. however, in many furrow irrigation models, infiltration is determined as a function of infiltration time opportunity, assuming the variation of weted perimeter is low along furrow. in order to compare the proposed asumptions, two zero-inertia furrow irrigation models wer...
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