This study aimed to reveal the effect between agility hurdle drills and ring speed on improvement. research is a type of quantitative with experimental methods 2x2 factorial design. The population in this numbered 32. sample was all 32 teak futsal athletes from 19 cities Bengkulu. Th e statistical analysis used two-track anava test hypothesis that affect agility. results show 1) There significa...

In aerostatic thrust bearings (ATBs), a high-pressure gas film with certain bearing capacity and stiffness is formed by passing between the moving surface static surface. Aerostatic have outstanding advantages in following aspects: high precision, speed, long service life, etc. They are widely used many fields, such as high-speed air spindles, precision machine tools, air-bearing guideways, tur...

Aim: Post systems are crucial for the treatment of endodontically treated teeth with excessive crown destruction. Currently, increase in esthetic demands has increased use tooth-colored post systems. The aim this study was to evaluate compression-shear strength after application different resin cements and surface treatments zirconia post-cores produced by CAD-CAM milling technique. Methodology...

To speak fluently is a complex skill. In order to help the learner to acquire it we propose an electronic version of an age old method: pattern drills (PD). While being highly regarded in the fifties, pattern drills have become unpopular since then. Despite certain shortcomings we do believe in the virtues of this approach, at least with regard to the memorization of basic structures and the ac...

Knowledge of appropriate behaviour during an earthquake is crucial for prevention of injury and loss of life. The Israeli Home Front Command conducts a yearly earthquake education programme in all Israeli schools, using three types of educational interventions: lectures, drills and a combination of the two. The aim of this study was to evaluate the effectiveness of these interventions in provid...

Rotary drills, diamond drills and percussive drills have been extensively used in open pits, quarries and construction sites. The prediction of the penetration rate of drilling machines is very important in the cost estimation and the planning of the rock excavation projects. The rock modulus ratio, which is the ratio of elastic modulus to compressive strength, indicating the deformability, is ...