نتایج جستجو برای: electrical resistance furnace
تعداد نتایج: 569078 فیلتر نتایج به سال:
Background and Objectives: Making stacking gels for polyacrylamide gels in the laboratory by conventional methods is laborious and time consuming. Considering the role of temperature in polyacrylamide gels with respect to electrical resistance and viscosity, we assumed that decreasing the temperature would cause an increase in electrical resistance and viscosity. Ultimately, a downward tempera...
Environmental degradation and Economic growth are two important proofs in sustainable development which are followed by steel industry. In this case, energy and environmental damages as sustainability patterns of environment have been investigated in three different dust collectors to select the most environmentally suitable dust collector for electric furnace. In this article, the consumption ...
Electrical Arc Furnace (EAF) is large, nonlinear and time-varying load that affects power quality of the power system by producing many problems such as harmonics, flicker, current unbalance and low power factor. This paper proposes a modified Unified Power Quality Conditioner (UPQC) to reduce power quality problems of EAF and enhance its controllability. Harmonic reduction, power quality impro...
using principle of minimum total potential energy approach in conjunction with rayleigh-ritz method, the electro-thermo-mechanical axial buckling behavior of piezoelectric polymeric cylindrical shell reinforced with double-walled boron-nitride nanotube (dwbnnt) is investigated. coupling between electrical and mechanical fields are considered according to a re...
A powder of Cu0.2Ni0.5Zn1.0 Mn1.3O4 composition for custom thermistor was prepared by using the respective mixture metal oxides and solid state reaction at 1000 ?C/4h in air. The obtained milled planetary ball mill agate a prolonged time to achieve submicron powder. further characterized XRD SEM techniques. After that, pressed into small disc-shaped samples sintered 1150 ?C/2h. were also SEM. m...
در این پروژه محدوده ملا احمد اصفهان واقع در سی کیلومتری جنوب غرب شهر نایین از دیدگاه استفاده از آب های زیر زمینی مورد مطالعه قرار گرفته است؛ از این رو روش های مقاومت ویژه الکتریکی از جمله گمانه زنی و پروفیل زنی الکتریکی بکار گرفته شده اند. چون این محدوده عمدتاً از سنگ های آذزین نفوذی و ولکانیکی تشکیل شده است و جزء سازندهای محسوب می گردد؛ بنابر این زون های آبدار عموماً در ارتباط با زون های خردشده ...
in recent years the aluminum matrix composites are gaining wide spread applications in automotive, aerospace, defense, sport and other industries. the reason for this is their exciting properties like high specific strength, stiffness, hardness, wear resistance, dimensional stability and designer flexibility. the present work reports on mechanical properties and microstructure analysis of al-si...
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