in this study, the optimization of energy consumption and reduction of greenhouse gas emissions of irrigated lentil production in esfahan province were conducted using data envelopment analysis (dea) method. the used data were collected randomly from 140 lentil producers using a face to face questionnaire method in the cropping season of 2014-2015. based on two dea models of constant returns to...

conventional compression ignition (ci) engines are known for their high thermal efficiency compared to spark ignited (si) engines. gasoline because of its higher ignition delay has much lower soot emission in comparison with diesel fuel. using double injection strategy reduces the maximum heat release rate that leads to nox emission reduction. in this paper, a numerical study of a gasoline fuel...

One of the main mechanisms for implementing international Climate Change policies is the establishment of a carbon offset market that allows the transfer of emission reductions between countries. The rationale for this policy instrument, which is recognised in the Kyoto Protocol, is to facilitate global cost efficiency in climate change mitigation through a cost efficient allocation of reductio...

We investigate the behavior of standard bases (in the sense of Hironaka and Grauert) for ideals in rings of formal power series over commutative rings with respect to specializations of the coefficients. For instance, we show that any ideal I of the ring of formal power series A[[X]] = A[[X1, . . . , XN ]] with coefficients in a Noetherian ring A admits a standard basis whose image under every ...

the optimization model for evaluating regional and global effects of greenhouse gases reductionpolicies named merge is an actively usable tool for studying some aspects of the problem of climate change.it is first of all destined for the quantitative estimation of emission trajectories and results of applyingabatement measures. in the paper, the emphasis is on the adaptation of the integrated a...

2D material with tunable direct bandgap in the intermediate region (i.e., ≈2-3 eV) is key to the achievement of high efficiency in visible-light optical devices. Herein, a simulation evidence of structure transition of monolayer ZnSe from the experimental pseudohexagonal structure to the tetragonal structure (t-ZnSe) under lateral pressure is shown, suggesting a possible fabrication route to ac...