نتایج جستجو برای: electric test

تعداد نتایج: 947357  

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 1997

Journal: :Sangyo oyo kogakkai ronbunshi 2022

Theoretically, the charge/ discharge cycle life of Electric Double Layer Capacitor (EDLC) is infinite. We use electrolysis solution and it difficult to directly measure capacity or reduction rate based on solution. conducted accelerated aging tests with repeated charge/discharge for 27 days in constant-temperature bath at 60 ℃ capacitance closely related The result showed that dropped by about ...

The computer simulation program of a practical scale reverse electrodialysis process has been developed based on the program for saline water electrodialysis. The program is applied to compute the performance of an industrial-scale reverse electrodialysis stack (effective membrane area S = 1 m × 1 m = 1 m2, cell pair number N = 300 pairs). The stack operatingconditions are optimized. Seaw...

2011
Tokunbo Ogunfunmi

Electric Circuits course is a core component of undergraduate curricula in electrical engineering programs worldwide. The Electric Circuits Concept Inventory (ECCI) is a set of multiple-choice questions that we are developing to measure students’ understanding of fundamental concepts such as DC and AC Circuits. First and Second-order circuits, etc. and Advanced Circuit analysis topics are cover...

The damping ratio of chassis suspension is a key parameter for damping matching of in-wheel motor vehicles (IWMVs). Because the motor is attached to the driving wheel, the initial design method of the damping ratio for traditional cars is not entirely suitable for IWMVs. This paper proposes an innovative initial design method of the damping ratio for IWMVs. Firstly, a traveling vibration model ...

2012
J. Acacio de Barros C. G. Carvalhaes J. P. R. F. de Mendoncca P. Suppes

Recent works on the relationship between the electro-encephalogram (EEG) data and psychological stimuli show that EEG recordings can be used to recognize an auditory stimulus presented to a subject. The recognition rate is, however, strongly affected by technical and physiological artifacts. In this work, subjects were presented seven auditory simuli in the form of English words (first, second,...

ژورنال: مجله دندانپزشکی 2014
دری, نرگس , نوری, علی , کاویانی, آزیتا ,

  Background and Aims: The ability of composite restorations to prevent microleakage needs desirable bonding material for proper sealing . The purpose of this study was to evaluate class V composite restorations microleakage in premolars with/without electric current while applying variant dentin bonding in vitro.   Materials and Methods: 120 non-carious human premolars were used for this study...

Objective(s): Since the electric field is the main driving force in electrospinning systems, the modeling and analysis of electric field distribution are critical to the nanofibers production. The aim of this study was modeling of the electric field and investigating the various parameters on polyacrylonitrile (PAN) nanofibers morphology and diameter. Methods:</st...

Journal: :Postepy higieny i medycyny doswiadczalnej 2012
Piotr Skomro Danuta Lietz-Kijak Edward Kijak Olga Bogdziewicz-Wałęsa Krystyna Opalko

Electric potentials occurring in the oral cavity deserve attention as they may cause various diseases and subjective feelings, which are very difficult to treat. The aim of this study was to evaluate the electric potentials within the oral cavity in patients with metal fillings and metal prosthetic restorations, after using a pulsed electromagnetic field. The study was carried out on 84 patient...

Journal: :Genetics and molecular research : GMR 2016
S X Wu Y Q Xu G Q Di J H Jiang L Xin T Y Wu

With the increasing voltage of direct current transmission line, the intensity of the environmental static electric field has also increased. Thus, whether static electric fields cause biological injury is an important question. In this study, the effects of chronic exposure to environmental static electric fields on some antioxidant enzymes activities in the hepatocytes of mice were investigat...

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