Genome Damage and Stability Centre, University of Sussex, East Sussex, BN1 9RQ, UK, Department of Clinical Genetics and Human Genetics, VU University Medical Center, Van der Boechorststraat 7, NL-1081 BT, Amsterdam, The Netherlands, Institute of Human Genetics, Charite-University Medicine Berlin, Augustenburger platz 1, Berlin 13353, Germany and Institute of Human Genetics, University of Aarhus...

BONE GRAFTING +*Mak, S Y; *Smith, S D; *Miles, A W +*Centre for Orthopaedic Biomechanics, University of Bath, UK [email protected] INTRODUCTION: Impaction bone grafting (IBG) has been used in revision hip replacement for more than 15 years. The objective is to impact allograft bone chips into the medullary canal to compensate for bone stock loss after failed primary hip replacement. Initial st...

A new bis-N,N'-(5-methylimidazol-4-ylmethyl) derivative of a 14-membered tetraazamacrocycle, L1, has been synthesized. The protonation constants of this compound and the stability constants of its complexes with divalent first-row transition metal ions and Fe3+ were determined at 298.2 K in aqueous 0.10 mol dm(-3) KNO3. Compound L1 exhibits high overall basicity, which is mainly conferred by th...

This paper deals with a plant-pollinator model with diffusion and time delay effects. By considering the distribution of eigenvalues of the corresponding linearized equation, we first study stability of the positive constant steady-state and existence of spatially homogeneous and spatially inhomogeneous periodic solutions are investigated. We then derive an explicit formula for determining the ...

In this paper, a novel robust tracking control law is proposed for constrained robots under unknown stiffness environment. The stability and the robustness of the controller are proved using a Lyapunov-based approach where the relationship between the error dynamics of the robotic system and its energy is investigated. Finally, a 3DOF constrained robotic arm is used to prove the stability, the ...

In this paper, a novel robust tracking control law is proposed for constrained robots under unknown stiffness environment. The stability and the robustness of the controller are proved using a Lyapunov-based approach where the relationship between the error dynamics of the robotic system and its energy is investigated. Finally, a 3DOF constrained robotic arm is used to prove the stability, the ...

The stability of upright posture was evaluated in 13 young and 13 elderly subjects by measuring the amplitude of centre of foot pressure (COFP) excursion in the anteroposterior and mediolateral directions while performing voluntary motor tasks requiring precise center of gravity control i.e., circular and forward-backward sways, squatting and rising on toes. The elderly subjects exhibited a sig...

The aim of the experiment reported here was to determine the static and dynamic stability of two-point stance phases when walking on hands and knees at different speeds. In addition, we defined the methods and predicted the consequences of including two-point stance phases into crutch assisted functional electrical stimulation (FES) walking. Crawling on hands and knees was performed at three sp...

INTRODUCTION Hard work in farming may lead to lumbar spinal stenosis, and consequently, to pain. The pain and neurological disorders may lead to disability and postural disorders. OBJECTIVE The aim of the presented study was to analyse postural stability and its correlation with functional disability of patients with lumbar spinal stenosis living in rural areas. MATERIALS AND METHODS The st...

Spirodiazaselenuranes are structurally interesting compounds and the stability of these compounds depends highly on the nature of the substituents attached to the nitrogen atoms. Aromatic substituents are known to play important roles in stabilizing the Se-N bonds in spiro compounds. In this study, several spirodiazaselenuranes are synthesized by introducing benzylic and aliphatic substituents ...