The assessment of harsh working conditions requires a correct evaluation of the metabolic rate. This paper revises the basis described in the ISO 8996 standard for the evaluation of the metabolic rate at a work station from the recording of the heart rate of a worker during a representative period of time. From a review of the literature, formulas different from those given in the standard are ...

The ongoing pandemic has resulted in the development of models dealing with rate virus spread and modelling mortality rates μx,t. A new method μx,t different time intervals higher lower dispersion been proposed. was based on Milevski–Promislov class stochastic Markov switches, which excitations are modelled by second-order polynomials results from a linear non-Gaussian filter. In contrast to li...

under-five mortality rate is the probability per 1,000 that a newborn baby will die before reaching age five, if current age-specific mortality rates be continued. under-5 mortality, a millennium development goal indicator, is a leading indicator of child health and overall development. this indicator measures child survival. it also, reflects the social, economic and environmental conditions i...

  The aim of the present study was to investigate the population dynamics of Liza klunzingeri, in Hormouzgan province waters located in northern coasts of the Persian Gulf and Oman Sea. This study was carried out from October 2007 to September 2008. samples were collected from commercial stake traps. The relationship between weight and fork length was found to be W= 0.0214 F.L2.8233 suggesting ...

The effect of temperature on the evolution of metabolism has been the subject of debate for a century; however, no consistent patterns have emerged from comparisons of metabolic rate within and among species living at different temperatures. We used experimental evolution to determine how metabolism evolves in populations of Drosophila melanogaster exposed to one of three selective treatments: ...