A hydraulic jump is the sudden transition from a high-velocity impinging flow into a turbulent roller in an open channel. Substantial amounts of air are entrapped at the impingement point, and significant free-surface fluctuations take place above the roller. In the present study, some physical modelling was conducted in a relatively large sized facility. The flow conditions included a wide ran...

The purpose of this study was to investigate whether eight weeks of aerobic high-intensity interval training with roller ski is effective in cross-country skiers. 10 male (age, 18.28 ± 2.1 years; height, 171.26 ± 4.12 cm; weight 61.39 ± 6.28 kg) and 8 female (age, 16.05 ± 0.3 years; height, 158.3 ± 6.47 cm; weight, 49.34 ± 0.7 kg) junior cross country skiers completed the study. All skiers perf...

OBJECTIVES To examine skaters' beliefs about risk factors related to roller derby injuries. DESIGN Qualitative study based on semistructured focus group discussions with female roller derby skaters. METHODS Skaters with varying levels of experience and injury history were invited to participate in focus group discussions. Semistructured focus group discussions were based on the question 'Wh...

We developed and validated a mitral valve orifice method for Doppler cardiac output determination. In 15 open-chest dogs, cardiac output was controlled and measured by a roller pump interposed between the right atrium and pulmonary artery as a right-heart bypass. Left heart flows were measured in the open-chest dog model by Doppler measurements at the mitral valve orifice and compared not only ...

Dancing on roller skates at discothecques has become very popular among the youth in the last number of years. During 1980 a number of these roller discotheques were opened in Belfast and it soon became apparent that significant numbers of young people were attending the Accident and Emergency Departments of hospitals in the city with injuries received while participating in this leisure activity.

AIM This study aims to determine the effect of the stationary rawx, roller, and the suspension cell culture systems on the total virus yield infectivity and antigenicity. MATERIALS AND METHODS Three serotypes of foot and mouth disease virus (FMDV) (serotype A, O and SAT-2) were inoculated separately into baby hamster kidney-21 cell line in rawx, roller, and suspension cultivation systems usin...

BACKGROUND Screening new lignocellulosic biomass pretreatments and advanced enzyme systems at process relevant conditions is a key factor in the development of economically viable lignocellulosic ethanol. Shake flasks, the reaction vessel commonly used for screening enzymatic saccharifications of cellulosic biomass, do not provide adequate mixing at high-solids concentrations when shaking is no...

conceptualization The observations and reflections were distilled into 'abstract concepts' that produced plans for action which could be 'actively experimented' with during the second night Knowledge Management and IT 605 of study. Plans at the operational, project, organizational and research levels were distinguished: Operational level (asphalt team)  The asphalt temperature throughout the w...

1 I n t r o d u c t i o n In food industry, we can find many manipulative operations that deal with deformable rheologic materials such as dough, paste, jelly, and meat. Most these operations are done by humans. Especially, operations with large deformation of rheologic objects depend upon humans. For example, forming of pizza dough to a thin circular shape is performed by humans while extensio...