Results 221 to 230 of about 47,693 (267)

Initial Reliability and Validity of the Lift-and-Raise Hamstring Test

Journal of Strength and Conditioning Research, 2010
The Lift-and-Raise hamstring flexibility test was developed as a field-based assessment to eliminate the effects of individual and developmental differences in arm, leg, and trunk lengths found with the commonly used Sit-and-Reach tests. This study assessed the initial reliability of the prototype instrument and its validity by comparing obtained ...
Shimon, Jane, Darden, G. F., Martinez, R., Clouse-Snell, J.   +3 more
openaire   +3 more sources

Optimum cruise lift coefficient in initial design of jet aircraft

Journal of Aircraft, 1992
shows the average lift during the ramp-down motion is the dominant factor in the decline of the total average lift at high amax. In the analysis in Ref. 1 a dynamic lift augmentation of AL = 1.5 was assumed, and this resulted in an ALV with a near 20% improvement in straight-and-level range over the conventional baseline vehicle. In Fig.
Rodrigo Martinez-Val, Emilio Perez
openaire   +1 more source

The effects of initial lifting height, load magnitude, and lifting speed on the peak dynamic L5/S1 moments

International Journal of Industrial Ergonomics, 2003
The purpose of this study was to quantify the peak dynamic bending moments on the spine during sagittal plane lifting as a function of the load's initial height above the floor, the load's magnitude, and the lifting speed. Ten male subjects participated in a repeated measures experiment in which 24 lifts were performed. The boxes lifted by the subjects
Steven A. Lavender, Gunnar B.J. Andersson, Owen D. Schipplein, Henry J. Fuentes   +3 more
openaire   +1 more source

Consistent lifting relations for the initialization of total-energy double-distribution-function kinetic models

Physical Review E, 2023
A lifting relation connecting the distribution function explicitly with the hydrodynamic variables is necessary for the Boltzmann equation-based mesoscopic approaches in order to correctly initialize a nonuniform hydrodynamic flow. We derive two lifting relations for Guo et al.'s total-energy double-distribution-function (DDF) kinetic model [Z. L.
Yiming Qi, Lian-Ping Wang, Zhaoli Guo, Shiyi Chen   +3 more
openaire   +2 more sources

["Total SMAS lift" or deep facial lift by temporal approach. Initial report].

Annales de chirurgie plastique et esthetique, 1992
The authors present a new technique of face lift via a temporal approach which allows them to perform a "Total SMAS Lift" of the supra- and infra-zygomatic region. They use the passage on the deep side of the superficial layer of the temporal fascia, which avoids damage to the frontal branch of the facial nerve.
P, Caix, J L, Goin, T, Modschiedler
openaire   +1 more source

Lift off of bouyant gas initially on the ground

Journal of Wind Engineering and Industrial Aerodynamics, 1979
Abstract A laboratory model study of the behavior of buoyant plumes when released at ground level in a turbulent shear layer reveals that significant shear flow velocities may delay significant lofting of the plume. The distance to lift off for line, area, or point source released correlates with a buoyancy length scale and the modified Froude number.
openaire   +1 more source

WAVE FLOWS INITIATED BY VERTICAL LIFTING OF A RECTANGULAR BEAM FROM SHALLOW WATER

Прикладная механика и техническая физика, 2015
The problem of flows initiated by vertical lifting of a rectangular beam partially submerged in shallow water filling a rectangular prismatic channel with a horizontal bottom is studied in the long-wavelength approximation. The width of the beam is equal to the channel width, and its upper and lower planes are parallel to the channel bottom.
V. V. Kuznetsova, V. V. Ostapenko
openaire   +2 more sources

Characteristics of turbulent lifted flames in coflow jets with initial temperature variation

Proceedings of the Combustion Institute, 2007
Abstract Characteristics of turbulent lifted flames in coflow jets have been investigated experimentally by varying the initial temperature of coflow air up to 900 K. In the turbulent jet regime, the liftoff height increased linearly with jet velocity and decreased with initial temperature. The liftoff velocity and reattachment velocity scaled by the
K.N. Kim, S.H. Won, S.H. Chung
openaire   +1 more source

Characteristics of laminar lifted flames in coflow jets with initial temperature variation

Proceedings of the Combustion Institute, 2007
Abstract Characteristics of laminar lifted flames of propane highly diluted with nitrogen have been investigated by varying the initial temperature in coflow jets. The result showed that the lifted flame maintained the tribrachial structure up to the initial temperature of 900 K and the liftoff height decreased with initial temperature and dilution ...
K.N. Kim, S.H. Won, S.H. Chung
openaire   +1 more source

Experimental study of particle lift initiation on roller-compacted sand–clay mixtures

Environmental Geotechnics
Civil engineering works are sources of dust emissions, which can cause severe security, health and environmental damages to workers and neighbourhoods. This is particularly significant for implementation of earthwork sites. The present paper reports a study conducted to characterise the soil–atmosphere interaction above compacted soils where particle ...
Mickael Le Vern, Ouardia Sediki, Andry Razakamanantsoa, Frédéric Murzyn, Frédérique Larrarte   +4 more
openaire   +1 more source