نتایج جستجو برای: resistivity

تعداد نتایج: 11971  

Journal: :Multiscale Modeling & Simulation 2006
Pierre Ailliot Emmanuel Frénod Valérie Monbet

a Laboratoire d’Étude et Modélisation des Environnements Littoraux (Lemel), Université de Bretagne Sud, Centre Yves Coppens, Campus de Tohannic, F-56000, Vannes. b Laboratoire de Statistiques Appliquées de BREtagne Sud (Sabres), Université de Bretagne Sud, Centre Yves Coppens, Campus de Tohannic, F-56000, Vannes. c Laboratoire de Mathématiques et Applications des Mathématiques (LMAM) , Universi...

Journal: :Computer Physics Communications 2009
Tirath Ramdas Gregory K. Egan David Abramson Kim K. Baldridge

2016
Mary D. Bondmass Susan Kowalski Sheniz Moonie

In the United States, nursing programs are commonly evaluated by their graduates success on the National Council Licensure Examination for Registered Nurses (NCLEX-RN c ©). The purpose of this paper is to describe a change in NCLEX-RN c © success rates following the addition of standardized exams throughout our program’s curriculum, and to compare these exam scores between graduates who pass NC...

Electrical resistivity (ER) is a main parameter in the melting processes of glasses. However, its measurement is difficult at high temperatures. In this study the electrical resistivity of different cordierite glass samples in the molten state was measured in the temperature range of 1100˚C to 1550 ˚C using the two-wire method. It was attempted to decrease the electrical resistivity of the glas...

Journal: :فیزیک زمین و فضا 0
ابراهیم حسین زاده دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران محمدکاظم حفیظی دانشیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران

mrs method is one of the new geophysical methods that directly detects the groundwater. by using this method, one can determines some parameters of aquifer (porosity, permeability and transmissivity). the purpose of this research is the application of mrs method in the conductive ground. combination of mrs and rs method is used for better detection of the aquifer in the region of abyek located ...

Journal: :مهندسی عمران فردوسی 0
امیررضا پیلوار علی اکبر رمضانیان پور مهدی مهدی خانی فرامرز مودی

one of the main factors of premature deterioration of concrete structures is the corrosion of reinforcements. chloride penetration of concrete is one of the main reasons of this phenomenon. therefore, to have durable structure, it is necessary to have concretes with low permeability.there are various methods to evaluate permeability of concrete. finding a relationship between them can be useful...

اصلی‌بیکی, باقر, سلامتی, هادی, کاملی, پرویز,

In this study, the effect of Ti substitution on structural and electrical properties of La0.8Sr0.2Mn1-xTixO3 (0 ≤ x≤ 0.075) compounds have been investigated. The double exchange interaction mechanism weakens by substituting the nonmagnetic Ti4+ ions in Mn4+ and Mn3+ sites. The results show that with increasing the doping level, metal-insulator transition temperature shifts to lower temperatures...

Journal: :Physical review. B, Condensed matter 1996
Jing Wang Pakhomov Fung Yan

We studied resistivity, magnetoresistivity, and Hall resistivity for a few percolating granular NiFe-SiO2 films upon thermal annealing. It was found that both the resistivity and the Hall resistivity decrease by two orders of magnitude upon annealing at 520 °C, accompanied by a crossover from an approximately 2lnT dependence of resistivity to a metallic behavior. On the other hand, transmission...

2012

Electrical resistivity describes how much a certain material resists electrical flow. Every material has an associated resistivity, ρ, which is constant. Conductors, such as copper have a low resistivity, while insulators, such as glass, have a high resistivity. Resistivity is an important property of any electrical object because it directly relates to the resistance, which relates to Ohm’s la...

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