Results on horizontal asymmetry and steepness distributions from analyses of ocean wave data collected during 10 severe storms in the northern North Sea are presented. The data have been collected at a sampling rate of 5 Hz using laser altimeters mounted on a fixed platform permitting the shapes of individual waves to be quite closely defined. This has allowed the steepness of the fronts and ba...

Approximately 1/3 of visual display terminal operators report back and neck complaints, thus, research on optimal workstation parameters are needed. The objectives of this study were to assess the effects of monitor height, chair type, and their interaction on back/neck electromyography (EMG), perceived discomfort, and posture shifts during data entry tasks. Two levels of monitor height (based ...

Low back pain (LBP) is common and affects most people at some point in their life. The exact cause of LBP among professional car drivers is still uncertain. Epidemiological studies of LBP have been performed among general populations and professional drivers in different countries; however the data on LBP in this professional category is scarce in Bangladesh. This paper investigates the prevale...

Background In alpine ski racing, typical loading patterns of the back include a combined occurrence of spinal bending, torsion, and high peak loads. These factors are known to be associated with high spinal disc loading and have been suggested to be attributable to different types of spine deterioration. However, little is known about the effect of standing height (ie, the distance between the ...

OBJECTIVE To investigate whether height is associated with low back pain (LBP) and surgery, taking into account personal and socioeconomic risk factors in a general population. METHODS In 2001, 13,680 participants of the Gazel cohort completed a self-reported questionnaire on LBP and surgery interventions. Three groups were compared according to their body height: no LBP (reference group, par...

indian ber (ziziphus mauritiana) has growing type as grape and is inclined to horizental and down ward growth. if it is not trained appropriately, it would grow into very bushy with thiny shoots. hence, such trees have short lives, and are liable to pests and diseases with low yield. fruit harvesting is also difficult in bushy trees. therefore, proper pruning and training of young trees is esse...

Osteoporosis in childhood is uncommon, and it may be secondary to a spectrum of diverse conditions. Idiopathic juvenile osteoporosis is a primary osteoporosis of unknown aetiology present in previously well children and is a diagnosis of exclusion. We describe a 10-year-old prepubertal boy who presented with back pain of 1-week duration. His spinal X-ray showed generalised loss of vertebral bod...

The intention of this study to design the probability optimized sewing sack’s workstation based on ergonomics for productivity improvement and decreasing musculoskeletal disorders. The physical dimensions of two workers were using to design the new workstation. The physical dimensions are (1) sitting height, (2) mid shoulder height sitting, (3) shoulder breadth, (4) knee height, (5) popliteal h...