منابع مشابه
Electrical conduction properties of phenolic–melaminic laminates
With the purpose of understanding a well-documented RPC ageing phenomenon, consisting of a gradual increase of the plate resistivity for chambers working at high rate, we carried out a systematic study on the electrical conduction properties of phenolic–melaminic electrode plates. A number of small size sample plates were kept under intense electrical current at fixed voltage, to simulate a hig...
متن کاملThe phenolic acids of human urine; paper chromatography of phenolic acids.
In the course of an investigation of the metabolism of aromatic compounds in phenylketonuria, it was found that, along with the abnormal metabolism of phenylalanine in this disease, there are other striking deviations from normal. These are manifested by the excretion of greatly increased amounts of some indole acids (1) and phenolic acids (2,3) which are present in normal human urine in small ...
متن کاملdegradation of oil impregnated paper insulation under influence of repetitive fast high voltage impulses
در طی سالهای اخیراستفاده ازمنابع انرژی تجدید پذیر در شبکه های مدرن بنا به دلایل زیست محیطی و اقتصادی به طور گسترده استفاده شده است همچون نیروگاههای بادی و خورشیدی .ولتاژتولیدی این نیروگاهها اغلب به فرم dc می باشد وادوات الکترونیک قدرت به عنوان مبدل و پل بین شکل موج dc وac استفاده می شوند.این پروسه باعث ایجاد پالسهایی برروی شکل موج خروجی می شود که می تواند وارد تجهیزات قدرت همچون ترانسفورماتور ی...
15 صفحه اولModeling Shearing of
The activation energies associated with the formation of a superlattice intrinsic stacking fault (SISF) from an antiphase domain boundary (APB) and the formation of a superlattice extrinsic stacking fault (SESF) from a complex stacking fault (CSF) in g 0 phase of Ni-based superalloys are calculated using a microscopic phase field dislocation model in combination with the nudged elastic band (NE...
متن کاملShearing Strength of Soils
b = a length L c = the cohesion intercept M L T Ip = the plasticity index P = a force M L T u = the pore fluid pressure ML T θ = an angle Angle μ1 = shear strength reduction factor related to time effects μ2 = shear strength reduction factor related to fissuring σ = the normal stress on a plane M L T τ = the shearing stress on a plane M L T φ = the angle of internal friction Angle ψ = an angle ...
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ژورنال
عنوان ژورنال: Journal of the Japan Society of Precision Engineering
سال: 1961
ISSN: 0374-3543
DOI: 10.2493/jjspe1933.27.765