This paper presents a model describing the effects of a human driver on the tipping stability of a powered wheelchair. The tipping stability is measured by the angle of tilt required to induce a loss of contact between any of the wheels of the wheelchair and the ground. Specifically, the effect of moving the centre of gravity of the human driver relative to that of the wheelchair in a controlle...

background: poison control centre of morocco (mpcc) plays a key role in promoting health. this study was aimed to demonstrate the role of the mpcc in improving public health and poisoning management. methods: this was a retrospective study of poisoning cases reported to the mpcc between 1980 and 2011. the collected data included number of poisoning cases, profession of interlocutor who called t...

background: poisoning incidents, in both children and adolescents, are known to occur in new zealand but little is known about the agents implicated.   methods: all the calls received over the ten years between 2000 and 2009, by the national poison centre in new zealand, were retrospectively reviewed. calls related to cases involving those less than 19 years were included. the data were analyze...

This study investigated the influence of gait speed on the control of mediolateral dynamic stability during gait initiation. Thirteen healthy young adults initiated gait at three self-selected speeds: Slow, Normal and Fast. The results indicated that the duration of anticipatory postural adjustments (APA) decreased from Slow to Fast, i.e. the time allocated to propel the centre of mass (COM) to...

The analytical structure of some generalizations of the circle map is given. Also a generalization of off centre reflection is studied. The stability of Ito-Glass coupled map lattice is studied.

Walking stability of human beings varies with age and reduces in the elderly people. Lesser walking stability causes many falls in the elderly people. In this paper, we have investigated the walking stability of young and elderly subjects using approximate entropy, a non-linear time series analysis method. Our emphasis in this paper is to investigate the walking stability using a portable instr...

Relatively little is known about the functions of specific molecular interactions between membrane proteins and membrane lipids. The structural and functional consequences of disrupting a previously identified interaction between a molecule of the diacidic lipid cardiolipin and the purple bacterial reaction centre were examined. Mutagenesis of a highly conserved arginine (M267) that is responsi...

OBJECTIVE To explore how the Functional Reach test correlates with the displacement of the centre of pressure and whether the test is a measure of the stability limits in healthy elderly people. Also to explore the performance parameters during the Functional Reach test. DESIGN Method comparison study. SUBJECTS Twenty-seven healthy elderly subjects. METHODS Whole body kinematics (ELITE sy...

We present a stability result for a class of non-trivial self-similarly vanishing solutions to a 3D Hele-Shaw moving boundary problem with surface tension and single-point suction. These solutions are domains that bifurcate from the trivial spherical solution. The moving domains have a geometric centre located at the suction point and they are axially symmetric. We show stability with respect t...

Inductance is realized at Spanish Centre of Metrology (CEM) by means of a modified coaxial MaxwellWien bridge. A study of the unequalized currents in the whole bridge network was carefully carried out in order to check their effect on the system’s accuracy. Previously, stability and thermal coefficient of different kind of inductors have been evaluated to select those with the lowest temperatur...