manual patient handling is known to be the major source of musculoskeletal load among hospital nurses. the objectives of the present study were determination of frequency of musculoskeletal disorders (msds) and its associated factors together with assessment of musculoskeletal load due to patient transfer by ptai method in hospital nursing staff of shiraz university of medical sciences (sums), ...

While inorganic nature contains equal amounts of different chirality type molecules, living nature is chirally pure. This mirror asymmetry of the bioorganic world on the molecular level is one of the unsolved mysteries of biology. A number of approaches to the solution of this problem were developed. Biogenic approaches claim that the property of chiral purity was selected in the course of biol...

Noncommutative geometric gauge theory is reconstructed based on the superconnection concept. The bosonic action of the Connes-Lott model including the symmetry breaking Higgs sector is obtained by using a new generalized derivative, which consists of the usual 1-form exterior derivative plus an extra element called the matrix derivative, for the curvatures. We first derive the matrix derivative...

We discuss the cooperative failure dynamics in fiber bundle model where individual elements or fibers are Hookean springs that have identical spring constants but different breaking strengths. When is stressed strained, especially equal-load-sharing scheme, load supported by failed gets shared equally rest of surviving fibers. This mean-field-type statistical feature (absence fluctuations) load...

We propose a one-parameter theory for gauge mediation of supersymmetry (SUSY) breaking. The spectrum of SUSY particles such as squarks and sleptons in the SUSY standard-model and the dynamics of SUSY-breaking sector are, in principle, determined only by one parameter in the theory, that is, the mass of messengers. Above the messenger threshold all gauge coupling and Yukawa coupling constants in...

Geopolymer concrete (GPC) is obtained by activating industrial wastes such as fly ash with chemical liquids sodium hydroxide (NaOH) and silicate (Na2 SiO3). In order to use environmentally friendly GPC from instead of portland cement (OPC), its behavior in structural elements important should be investigated detail. Load-displacement characteristics, flexural shear stiffnesses crack development...

We propose a one-parameter theory for gauge mediation of supersymmetry (SUSY) breaking. The spectrum of SUSY particles such as squarks and sleptons in the SUSY standard-model and the dynamics of SUSY-breaking sector are, in principle, determined only by one parameter in the theory, that is, the mass of messengers. Above the messenger threshold all gauge coupling and Yukawa coupling constants in...