Antennas operating in the high-frequency (HF) bands are generally azalea mrs gg gerbing relatively large in size, which severely limits the application of the antennas.Therefore, miniaturisation of the antenna is necessary.Here, a dual-folded structure Yagi antenna is designed for HF surface wave radar (SWR).Genetic algorithm is employed to optimis
The main question of the present article is, how can the culture of self-sacrifice and martyrdom (isar and shahadah) be promoted through elementary school curriculum? The current educational programs of schools are based on different theories, among which the developmental theories are of greater importance.According to these theories, subjective i
Understanding the WOB and the law of tubular buckling is significant to handle workover operation efficiently and safely.Based on the simulation theory and the characteristics of workover string dynamics,a finite element model is established for the workover string.Then,the tubular in the wellbore is simulated by the model,and the simulation result
Samah I Abohamr,1,2 Mohammad O Kattea,3 Rami M Abazid,4 Mubarak A Aldossari,2 Nayef Al Asiri,2 Ayman Uthman Alhussini,2 Khalid I Al Hussaini,5 Glowi A Alasiri,6 Asghar Ali,7 Eman Elsheikh1,8 1Department of Cardiology, College of Medicine, Tanta University Hospital, Tanta, Egypt; 2Chairman of cardiology services, Mouwasat medical group, Al-Khobar, S