A method of measuring earth resistivity
نویسندگان
چکیده
منابع مشابه
A Method of Measuring Earth Resistivity
A knowledge of earth resistivity ^ (or specific resistance) maybe of value in determining something of the composition of earth, such for example, as moisture content, whether it contains oil, ore of high conductivity, etc., or in the calculation or mitigation of damages to pipe systems by electrolysis caused by the rettim current of street-railway systems. For some of these or other reasons we...
متن کاملA New Method for Measuring the Angle of Hallux Valgus
Objectives. The aim of this study is to introduce a new way and assign its reliability and validity in measuring the angle of hallux valgus. Methods. In this method, we have proceeded to introduce a simple way for measuring the angle of hallux valgus by using ruler and mathematical formulas. For doing this study, we selected 25students and measured their angle of hallux valgus with new way ...
متن کاملApplication of Satellite Image Processing to Earth Resistivity Map
This paper proposes a useful technique for generating an earth resistivity map. Earth resistance is one of essential factors in a broad range of power system analysis and design. Information of earth resistivity is helpful for practical power system engineers in order to establish power system grounding. In this paper, a LANSAT7 image of a tested area of 50 km was used by ENVI program in associ...
متن کاملOne-step method for measuring the effect of humidity on powder resistivity
Relation between powder resistivity and humidity is typically measured in several steps. When a standard resistivity cell is used, this procedure may take weeks. We present a method for measuring powder resistivity as a function of moisture using a one-step process. System consisted of two parallel electrodes immersed in powder. High voltage electrode was a uniform square but the ground electro...
متن کاملsolution of security constrained unit commitment problem by a new multi-objective optimization method
چکیده-پخش بار بهینه به عنوان یکی از ابزار زیر بنایی برای تحلیل سیستم های قدرت پیچیده ،برای مدت طولانی مورد بررسی قرار گرفته است.پخش بار بهینه توابع هدف یک سیستم قدرت از جمله تابع هزینه سوخت ،آلودگی ،تلفات را بهینه می کند،و هم زمان قیود سیستم قدرت را نیز برآورده می کند.در کلی ترین حالتopf یک مساله بهینه سازی غیر خطی ،غیر محدب،مقیاس بزرگ،و ایستا می باشد که می تواند شامل متغیرهای کنترلی پیوسته و گ...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bulletin of the Bureau of Standards
سال: 1916
ISSN: 0096-8579
DOI: 10.6028/bulletin.282