background and objectives: edible parts of pomegranate fruits are a rich source of bioactive compounds. the present research examines the effect of modified atmosphere packaging on the fruit physico-chemical and microbial properties of two commercial pomegranate cultivars grown in iran. materials and methods: the arils were packaged and stored under four different atmospheres. all of the packag...

In this study, the structures, the IR spectroscopy, and the electronic properties of AunCum (n+m≤5) bimetallic clusters were studied and compared with those of pure gold and copper clusters using the generalized gradient approximation (GGA) and exchange correlation density functional theory (DFT). The study of an O2-AunCum system is important to identify the promotion effects of each of the two...

the purpose of this research was to determine the effect of modified atmosphere packaging (map) containing high carbon dioxide gas concentrations on the quality of sayer dates, to be used as a safe alternative to methyl bromide fumigation. different percentages of gases (85% co2 + 3% o2 + 12% n2; 75% co2 + 12% o2 + 13% n2; 34% co2 + 37% o2 + 29% n2) were injected into the cellophane packages. t...

The O2 and CO2 compensation points (O2 and CO2) of plants in a closed system depend on the ratio of CO2 and O2 concentrations in air and in the chloroplast and the specificities of ribulose bisphosphate carboxylase/oxygenase (Rubisco). The photosynthetic O2 is defined as the atmospheric O2 level, with a given CO2 level and temperature, at which net O2 exchange is zero. In experiments with C3 pl...

in this paper, we examine the effects of thermal radiation on co2 emission and o2 depletion in an exothermic reactive slab of combustible materials with uniform surface temperature. the governing equations for the nonlinear heat and mass transfer problem are derived and solved numerically using runge-kutta-fehlberg method with shooting technique. numerical expressions for temperature field, co2...