AIMS The aim of this study was to investigate hearing loss in patients with ankylosing spondylitis. STUDY DESIGN Prospective, case-control study. METHODS Fifty-nine ankylosing spondylitis patients (118 ears) and 52 healthy control subjects (104 ears) were included. Pure tone audiometry at 250, 500, 1000, 2000, 4000 and 6000 Hz and immittance measures, including tympanometry and acoustic ref...

While walking on a treadmill, 20 subjects experienced lateral oscillations: frequencies from 0.5 to 2 Hz and velocities from 0.05 to 0.16 m s(- 1) rms. Postural stability was indicated by ratings of 'discomfort or difficulty in walking', the movement of the centre of pressure beneath the feet and lateral forces applied to a hand support. Hand support improved postural stability with all frequen...

(VCO) phase-locked loop (PLL) and ring-VCO PLL topologies with low-phase noise. Differential control loops are used for the PLL locking through a symmetrical transformer-resonator or bilaterally controlled varactor pair. A differential compensation mechanism suppresses out-band spurious tones. The prototypes of the proposed PLL are implemented in a CMOS 65-nm or 45-nm process. The measured resu...

Min introduces the type form (of object-formulae) and the infix constant −→ (for objectimplication). The constant [[ ]] maps form to the predefined type prop of meta-logic propositions. The proposition [[P ]] should be read as “the formula P is true”; we usually distinguish object-level formulae (form) from meta-level formulae (prop). In practice the brackets can be dropped; parser and pretty-p...

Eurycoma longifolia, locally known as ‘Tongkat Ali’ is a popular local medicinal plant that possess a lot of medicinal properties as claimed traditionally, especially in the treatment of malaria. The claims have been proven scientifically on isolated compounds from the plant. The present study is to investigate the anti malaria properties of Eurycoma longifolia standardized extract (root) (TA16...

Structural damage in materials evolves over time due to growth of fatigue cracks in homogenous materials and a complicated process of matrix cracking, delamination, fiber breakage and fiber matrix debonding in composite materials. In this study, a finite element model of the helicopter rotor blade is used to analyze the effect of damage growth on the modal frequencies in a qualitative manner. P...