foreign bodies in lower urinary tract may present in a different number of ways. we report four cases of such unusual presentation. physical examination and plain radiograph was sufficient enough to confirm our diagnosis in all cases. the cases belonged to different age groups and three out of four cases were managed by open surgical approach. one foreign body was removed using cystoscope. prom...

This paper describes Data-Weighted-Averaging (DWA) algorithms for multibit complex bandpass ∆ΣAD modulators with arbitrary signal bands. In most of bandpass ∆ΣAD modulators, their sampling frequency is chosen as four times of the center frequency of their signal band in order to simplify the following digital filter design. But with this relationship, their performance would be limited by the t...

Primitive mesenchymal gastrointestinal tumors without evidence of differentiation are referred to as gastrointestinal stromal tumors. Because gastrointestinal stromal tumors are known for their wide variability in clinical behavior and for the difficulty in determining their malignant potential, numerous studies have been done to define better useful prognostic indicators.1–3 We report a case o...

BACKGROUND Surgery, as the main approach in higher stages of gynecomastia, has different techniques regarding the staging of the disease. The more the grade of gynecomastia, the more complicated the used surgical techniques, conventionally. This study assessed the success rate of the simplest surgical technique in higher grades of gynecology as well as the satisfaction rate in patients and ...

A b s t r a c t In this paper, we briefly discuss the dynamic and functional approach to computer symbolic tensor analysis. The ccgrg package for Wolfram Language/Mathematica is used to illustrate this approach. Some examples of applications are attached.

In this article, we propose a fuzzy class relation assigning to each pair of finite fuzzy sets a degree to which they are equipollent, which indicates that they have the same number of elements. The concepts of fuzzy sets and fuzzy classes in the class of all countable sets are introduced, and several standard relations and constructions, such as the fuzzy power set and exponentiation, are defi...