نتایج جستجو برای: turbine drills

تعداد نتایج: 23009  

2010
S. Sheng F. Oyague S. Butterfield

.................................................................................................................................. 1 TABLE OF CONTENTS .............................................................................................................. 2 INTRODUCTION ...........................................................................................................................

2015
V. ZAGORODNOV L. G. THOMPSON

Ice coring of temperate and polythermal glaciers demonstrates some limitations of most electromechanical (EM) and thermal electric (TE) drills. Most TE drills are heavy, require a heavy power system, work slowly and cannot operate in boreholes going through the cold–temperate ice transition. Antifreeze thermal electric drills (ATED) are capable of operating in polar ice caps, polythermal and te...

Journal: :International journal of sports physiology and performance 2010
Paul G Montgomery David B Pyne Clare L Minahan

PURPOSE To characterize the physical and physiological responses during different basketball practice drills and games. METHODS Male basketball players (n=11; 19.1+/-2.1 y, 1.91+/-0.09 m, 87.9+/-15.1 kg; mean+/-SD) completed offensive and defensive practice drills, half court 5on5 scrimmage play, and competitive games. Heart rate, VO2, and triaxial accelerometer data (physical demand) were no...

Journal: :Astrobiology 2008
K Zacny Y Bar-Cohen M Brennan G Briggs G Cooper K Davis B Dolgin D Glaser B Glass S Gorevan J Guerrero C McKay G Paulsen S Stanley C Stoker

Drilling consists of 2 processes: breaking the formation with a bit and removing the drilled cuttings. In rotary drilling, rotational speed and weight on bit are used to control drilling, and the optimization of these parameters can markedly improve drilling performance. Although fluids are used for cuttings removal in terrestrial drilling, most planetary drilling systems conduct dry drilling w...

Journal: :Ecology 2008
F Joel Fodrie Matthew D Kenworthy Sean P Powers

We manipulated predator densities and prey vulnerability to explore how interactions between two predators affect overall mortality of their shared prey. Our three-member study system included eastern oysters (Crassostrea virginica) and two of its major consumers: southern oyster drills (Stramonita haemastoma) and stone crabs (Menippe adina). Field experiments demonstrated that drills and crabs...

2017
Daniele Conte Terence Favero Meike Niederhausen Laura Capranica Antonio Tessitore Eling Douwe de Bruin

This study aimed to assess the basketball ball-drills workload analyzing: (1) the effect of varying the number of players involved on physiological and technical demands; (2) the temporal changes in players’ responses across bouts; and (3) the relationship of players’ workload with their maturation status and training age. Twelve young male basketball players (mean ± SD; age 13.9 ± 0.7 years; h...

Journal: :Medicine and science in sports and exercise 2007
Lindsay B Baker Kelly A Dougherty Mosuk Chow W Larry Kenney

PURPOSE To determine the effect of 1, 2, 3, and 4% dehydration (DEH) versus euhydration (EUH) on basketball performance in adult male players. METHODS Seventeen 17- to 28-yr-old male basketball players completed 3 h of interval treadmill walking (40 degrees C and 20% relative humidity) with or without fluid replacement. Subjects completed six trials in random order: 1) EUH with a carbohydrate...

2016
D Conte A Tessitore K Smiley C Thomas TG Favero

This study aimed to analyse live and stoppage time phases, their ratio, and action played on half and full court in college basketball games. Differences were assessed for the entire games and between halves. Moreover, differences of the live/stoppage time ratio were analysed between games and game-based conditioning drills. Ten games as well as fifteen defensive, fourteen offensive and six scr...

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