Running Torque of Slow Speed Two-Point and Four-Point Contact Bearings

Comparison of the Diagnostic Values of Four-Point and Two-point Ultrasound Versus CT Scan in Determining Pneumothorax

Background and Objectives: Pneumothorax is a life-threatening complication and the most common cause of which is trauma. Early diagnosis and treatment of Pneumothorax are very important. The aim of this study was to compare the diagnostic values of four-point and double-point ultrasound versus CT scan in determining pneumothorax in Rasul-Akram and Hafte-Tir Hospitals during the years 2015 - 201...

طراحی و ساخت دستگاه four-point probe station

یکی از ویژگی های اساسی مواد هادی مقاومت الکتریکی آن هاست که با داشتن تعداد الکترونهای آزاد لایه ظرفیت می توان مقاومت الکتریکی آن ماده را پیدا نمود. با اندازه گیری مقاومت الکتریکی مواد می توان ویژگیها و مشخصات ماده را تعیین نمود. در این پایان نامه بنا داریم به اندازه گیری مقاومت الکتریکی با استفاده چهار پراب همراستا با فاصله ثابت از هم که در تماس با سطح یک ویفر سیلیکونی هستند اقدام کنیم. در عم...

Comparison of One-point and Two-point Methods for Estimation of Infiltration Parameters in Furrow Irrigation

Infiltration is one of the most important hydraulic parameters affecting surface irrigation and one ofthe most difficult parameters in practical field determinations. The infiltration equations are used todescribe water flow hydraulics and surface irrigation systems design. But determination of theparameters in these equations are costly and time consuming. Therefore, some estimating methods ar...

Point of Contact

Slow P -point Ultrafilters

We answer a question of Blass, Di Nasso, and Forti [2, 7] by proving, assuming Continuum Hypothesis or Martin’s Axiom, that (1) there exists a P -point which is not interval-to-one and (2) there exists an interval-to-one P -point which is neither quasi-selective nor weakly Ramsey.