An attempt to determine a longitude without a spirit level

Use of a Digital Protractor and a Spirit Level to Determine the Intraoperative Anteversion of Femoral Component during Cemented Hip Hemiarthroplasty: a Prospective Clinical Trial

Background: Femoral stem anteversion during hip arthroplasty is generally estimated by eye intraoperatively and hasproven to be different from targeted values. This study aims to determine the accuracy of a novel technique using adigital protractor and a spirit level to improve surgeons’ estimation of stem anteversion.Methods: A prospective non-randomized study was conducted a...

An attempt to do without dark matter.

The discrepancy between dynamical mass measures of objects such as galaxies and the observed distribution of luminous matter in the universe is typically explained by invoking an unseen "dark matter" component. Dark matter must necessarily be nonbaryonic. We introduce a simple hypothesis to do away with the necessity for dark matter by introducing an additional non-gravitational force coupled t...

[Attempt to determine morbidity causing absenteeism in an active population].

Interpretation of some results from radiotherapy and an attempt to determine a rational treatment technique. 1906.

We wish to discuss: (1) the strange selective action of X rays on epithelial tumors; (2) tumors produced by X rays. Firstly, all physicians have observed with the same interest mixed with surprise that X radiation can kill the cells of a neoplasm while leaving the neighboring healthy tissues or even the tissues invaded by the tumor intact. But experiments on animals have shown that radiation ha...

a paradigm shift away from method-wise teaching to strategy-wise teaching: an investigation of reconstructive strategy versus communicative strategy

چکیده: هدف اصلی این مطالعه ی توصیفی تحقیقی در حقیقت تلاشی پساروش-گرا به منظور رسیدن به نتیجه ای منطقی در انتخاب مناسبترین راهکار آموزشی بر گرفته از چارچوب راهبردی مطرح شده توسط والدمر مارتن بوده که به بهترین شکل سازگار و مناسب با سامانه ی آموزشی ایران باشد. از این رو، دو راهکار آموزشی، راهکار ارتباطی و راهکار بازساختی، برای تحقیق و بررسی انتخاب شدند. صریحاً اینکه، در راستای هدف اصلی این پژوهش، ر...