The maximum acceptable weights of lift (MAWL) of obese and non-obese participants were empirically investigated. Three obesity levels were considered: nonobese (18.5 kg/m body mass index (BMI) 24.9 kg/m), moderately obese (35 kg/m BMI 39.9 kg/m) and extremely obese (BMI 40 kg/m). Ten male and 10 female participants were recruited for each obesity level. The participants determined their MAWL fo...

BIOMECHANICAL ANALYSIS OF ASYMMETRIC AND DYNAMIC LIFTING TASK by Xiaopeng Jiang Lifting tasks is one of the leading causes of occupational lower back disorders (LBD). Aimed at deriving internal forces of human musculoskeletal system during lifting, biomechanical models are utilized to address this problem. This thesis provides an indepth literature review of such modeling, and the results of ex...

Diamagnetic levitation is applied to attain the smallest possible effective spring constant suitable for detection of weak and continuous forces relevant various phenomena including biological ones. A Nd-Fe-B permanent magnet was suspended under aerial conditions with lifting force from a multi-layered solenoid stabilized horizontally via repulsive interaction diamagnetic substance. The suspens...

background: proper training on how to correctly handle loads is one key point for prevention of low back disorders. this study was conducted with the objectives of assessing manual material lifting activities and comparing two methods of training intervention in a porcelain company.   methods: in this randomized controlled trial which was conducted in a porcelain company, all male employees wit...

original article   health, safety, and environment management are dedicated a vast area in which ergonomics aspects known as one of the related aspects. in the following case study, the occupational hygiene by ergonomic intervention is focused. one of the prevalent activities among industrial sectors' workers in the developing countries is manual lifting tasks and other related physical activit...

We measured the homogeneity and stability of the magnetic field of a high field (about 1.04 tesla) yokeless permanent magnet with 40-mm gap for high resolution nuclear magnetic resonance (NMR) imaging. Homogeneity was evaluated using a 3-dimensional (3D) lattice phantom and 3D spin-echo imaging sequences. In the central sphere (20-mm diameter), peak-to-peak magnetic field inhomogeneity was abou...

Permanent magnet arrays have advantages for magnetic field generation over the traditional current based magnetic flux sources, such as electromagnets, in that they do not require a power supply and cooling system. Magnetic flux density above the magnetic remanence BR of the permanent magnet material can be achieved by arranging the permanent magnet segments in the form of hollow cylindrical sh...

Given a valid inequality for the mixed integer infinite group relaxation, a composite lifting approach that combines sequential lifting and use of a fill-in function is proposed that can be used to strengthen this inequality. Properties of this composite lifting such as bounds on the solution of the lifting problem and some necessary conditions for the lifted inequality to be minimal for the mi...

The use of high-temperature superconducting wires (HTS wires) in on-board superconducting magnets for maglev has several advantages such as improvement in the stability of the superconducting magnet, improvement in reliability through simplification of the magnet structure, and decrease in the mass of the superconducting magnet and energy consumed by the on-board cryocooler. To demonstrate the ...

Most of studies on Manual Material Handling (MMH) tasks for finding lifting capacity were done on general population; these were not done for underweight, normal weight and overweight workers. MMH task involves the use of the human body to lift, lower or carry loads. The purpose of this study is to evaluate the effect of psychophysical approach on MAWL for underweight, normal weight and overwei...