نتایج جستجو برای: acceleration and deceleration wave

تعداد نتایج: 16884904  

2015
M. Eriksson Crommert K. Halvorsen M. M. Ekblom Mikhail A. Lebedev

The aim of this study was to investigate if trunk muscle activation patterns during rapid bilateral shoulder flexions are affected by movement amplitude. Eleven healthy males performed shoulder flexion movements starting from a position with arms along sides (0°) to either 45°, 90° or 180°. EMG was measured bilaterally from transversus abdominis (TrA), obliquus internus (OI) with intra-muscular...

Journal: :Journal of the American College of Cardiology 1996
A Tenenbaum M Motro H Hod E Kaplinsky Z Vered

OBJECTIVES The aim of this study was to investigate whether a new variable of mitral inflow, A wave deceleration time, identifies patients with elevated left ventricular filling pressures. BACKGROUND In patients with an elevated left ventricular end-diastolic pressure, the increase in left ventricular pressure after atrial contraction rapidly exceeds left atrial pressure, resulting in abrupt ...

2005
J. Ponce de Leon

We present a simple analytical model where the evolution from decelerated to accelerated cosmic expansion can be interpreted as a “first-order” phase transition between two successive stages. The dominant energy condition allows different parts of the universe to evolve, from deceleration to acceleration, at different redshifts within a narrow era. This picture corresponds to the creation of bu...

2011
Cheng-Chen Kou Randy Machemehl

Methodologies for modeling ramp driver acceleration-deceleration and gap acceptance behavior during freeway merge maneuvers are presented. This study serves an important purpose by pointing to the limitations of current freeway merge models which treat the ramp driver acceleration-deceleration and gap acceptance behavior as deterministic phenomena. In addition, the interdependence of freeway me...

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