نتایج جستجو برای: causes a sharp drop in temperature
تعداد نتایج: 20456229 فیلتر نتایج به سال:
In this study, for the first time, the heat transfer and the pressure drop of zinc oxide nanoparticles in alternating elliptical axis (AEA) tube have been investigated experimentally. The zinc oxide nanoparticles were at volumetric concentrations 1% and 2%. The base fluid was heat transfer oil and the experiments were conducted at constant wall temperature. Also, the study was done in Reynolds ...
Background & Aims: Iron deficiency is the most common nutritional deficiency in children. Iron supplements are recommended for controlling iron deficiency in infants in developing countries. The aim of this survey was to study the prevalence and related factors of non-consumption and irregular consumption of iron drop in infants aged 7-24 months in Urmia.Materials & Methods: This cross-sectiona...
target tracking is the tracking of an object in an image sequence. target tracking in image sequence consists of two different parts: 1- moving target detection 2- tracking of moving target. in some of the tracking algorithms these two parts are combined as a single algorithm. the main goal in this thesis is to provide a new framework for effective tracking of different kinds of moving target...
Recently, special type of fuel cells has been developed that operates in a Dead End mode. Working in this condition, the Dead-End fuel cell is supplied withhydrogen almost at the same rate of consumption. It is noteworthy to mention thatall of the water transport mechanisms have been considered in this simulation.Water accumulation that is directly proportional to the cell current is of a grea...
The cement industry is the major source of cement dust which contains heavy metals like nickel, cobalt, lead, chromium, arsenic and hazardous substances like dioxins and furans. Exposure to these substances can cause health problems to human, animals and vegetation. A continuous pilot scale quartz sand filter was constructed and uses to study the effect of important design parameters (temperatu...
this thesis basically deals with the well-known notion of the bear-invariant of groups, which is the generalization of the schur multiplier of groups. in chapter two, section 2.1, we present an explicit formula for the bear-invariant of a direct product of cyclic groups with respect to nc, c>1. also in section 2.2, we caculate the baer-invatiant of a nilpotent product of cyclic groups wuth resp...
Background: Tennis elbow (TE), as a lateral epicondylitis (LE), is a chronic inflammatory and degenerative tendon disease that causes pain in the outer part of the elbow. This study aimed to evaluate the efficacy of topical Trinitrate Glyceryl (GTN) in the treatment of patients with TE. Materials and methods: In this double-blind clinical trial, 90 patients with TE, referred to Orthopedic and R...
We show theoretically that the Coulomb drag rate between two parallel quasi-two-dimensional electron gases is substantially enhanced by the coupled acoustic and optic plasmon modes of the system at temperatures T ∼ 0.2TF (where TF is the Fermi temperature) for experimentally relevant parameters. The acoustic mode causes a sharp upturn in the scaled drag rate as a function of temperature at T ≈ ...
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