A molecular dynamics simulation of vapor phase nucleation has been performed with 40,000 Lennard-Jones particles for the target gas and 0-160,000 particles for the carrier gas. Three carrier gas models are adopted, including a soft-core model, a Lennard-Jones model, and a modified Lennard-Jones model in which the attractive interaction can be adjusted. The effect of the carrier-gas pressure is ...

in this paper, the radial breathing mode (rbm) frequencies of multi-walled carbon nanotubes (mwcnts) are  obtained based on the multiple-elastic thin shell model. for this purpose, mwcnt is considered as a multiple concentric elastic thin cylindrical shells, which are coupled through van der waals (vdw) forces between two adjacent tubes. lennard-jones potential is used to calculate the vdw forc...

this paper analyzes the relationship between capital structure and earning management. for analyzing we use 119 non-financial companies that listed in tehran stock exchange from 2000 to 2008. the researchers will focus on comparing the jones model and the modified jones model, which are the two most frequently used model in empirical analysis nowadays. earnings management is a kind of managemen...

this paper analyzes the relationship between capital structure and earning management. for analysing we used 119 non-financial companies that listed in tehran stock exchange from 2000 to 2008. the researchers will focus on comparing the jones model and the modified jones model, which are the two most frequently used model in empirical analysis nowadays. earnings management is a kind of manageme...

the present study attempts to investigate lean production in iran khodro company in order to address the importance of renovation and implementation of strategic improvement cycle to achieve competitive advantage through improving product quality as well as correcting consumption pattern for energy in the country along with national strategies. due to its comprehensiveness, having clear framewo...