Design and analysis of propellant grain configurations for determination of the grain geometry which is an important and critical step in the design of solid propellant rocket motors, because accurate calculation of grain geometrical properties plays a vital role in performance prediction. The performance prediction of the solid rocket motor can be achieved easily if the burn back steps of the ...

In this paper, the effects of geometry a submerged nozzle on damping characteristics are studied numerically. Firstly, numerical method is verified by previous experimental data. Then, mesh sensitivity analysis and monitor position independence carried out. Thirdly, systematically studied, focuses placed cavity size, convergent angle divergent angle. The pulse decay utilized to evaluate coeffic...

how to cite this article: dalvand h, dehghan l, feizi a, hosseini sa, amirsalari s. iran j child neurol. 2013 autumn; 7(4):12-19. abstract objective the purpose of this study was to examine the impacts of hinged and solid anklefoot orthoses (afos) on standing and walking abilities in children with spastic diplegia. materials & methods in a quasi-experimental design, 30 children with spastic dip...

Energy-yielding fluids generally have lower satiety value than solid foods. However, despite high water content, soups reportedly are satiating. The mechanisms contributing to this property have not been identified and were the focus of this study. A within-subject design, preload study was administered to 13 male and 18 female adults (23.7F0.9 years old) with a mean body mass index (BMI) of 23...