نتایج جستجو برای: 5 and 7 km h

تعداد نتایج: 17137127  

Journal: :Aerospace medicine and human performance 2016
Mandy E Spoorenberg Erik H J Hulzebos Tim Takken

BACKGROUND This is a cross-sectional observational study to investigate the safety and feasibility of integrating changing body positions and physical activity in a hypoxic challenge test (HCT). The secondary objective was to compare oxygen saturation (Spo2) in two different locations (forehead and finger). METHODS Included were 12 pediatric to young adult patients with congenital heart (N = ...

ژورنال: مواد پرانرژی 2019

Metal powders are combined due to high heat reaction with oxygen, improve the density of the propellant, decrease the pressure exponent (n) and Higher combustion heat, and as a result of higher ISP in propellant. Aluminum, magnesium and boron have found a wide application in propellant formulations. Boron, due to high oxidation heat and low atomic weight, is one of the best elements known. Unfo...

Journal: :Journal of physical activity & health 2011
Daniel Arvidsson Mark Fitch Mark L Hudes Sharon E Fleming

BACKGROUND Overweight children show different movement patterns during walking than normal-weight children, suggesting the accuracy of multisensory activity monitors may differ in these groups. METHODS Eleven normal and 15 high BMI African American children walked at 2, 4, 5, and 6 km/h on a treadmill wearing the Intelligent Device for Energy Expenditure and Activity (IDEEA) and SenseWear (SW...

Journal: :ماشین های کشاورزی 0
مجید سلیمانی مهدی کسرایی

in recent decades, canola has been considered as the most important oilseed. harvesting is the most major problem of canola cultivation, since canola pods are very sensitive to shocks and vibrations. large amount of produce will fall on the ground especially when the combine's head is not adjusted properly. when canola harvested with a combine, the losses may reach up to 50%. the yields can be ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Objective: It is believed that drivers play a crucial role in accidents. Paying attention to brake lights, a driver may find out about danger and react. Rear-end collision accidents refer to the part of the accidents due to driver inattention or slow reaction. The aim of this study was to determine the effect of dynamic flashing brake lights (7 Hz) on drivers' brake reaction time using the driv...

1990
Mayumi Ohzora Tohru Ozaki Shigeru Sasaki Masumi Yoshida Yoshitaka Hiratsuka

2. SYSTEM CONFIGURATION This paper d m i a video-rate image processing system for an autonomous Personal Vehicle System (PVS). It detects white lines on a road including straight sections, curves, and intersections, and detects obstacles in the road by using binocular 3D vision. We developed white-line and obstacle detection algorithms that can be processed by the Fujitsu Integrated Visual Info...

Journal: :International journal of sports medicine 2011
G Atkinson C E Taylor N Morgan L R Ormond G A Wallis

We examined whether selected anthropometric and nutritional factors influenced field-based marathon running performance. An internet-based data collection tool allowed competitors in the 2009 London Marathon (n=257, mean ± SD age: 39 ± 8 years, finish time: 273.8 ± 59.5 min) to record a range of anthropometric, training and nutritional predictors. Multivariate statistical methods were used to q...

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