نتایج جستجو برای: glass structure
تعداد نتایج: 1629630 فیلتر نتایج به سال:
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
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A constant volume, atmospheric pressure Zr/Ba/Na fluoride glass has been simulated by molecular dynamics with the limitations of the Born-Mayer-Huggins potentials, used previously and resulting in high simulation pressures, having been overcome. The simulated structure of this glass as well as its activation energy for diffusion are in very good agreement with those experimentally observed. T...
Nanoporous glass-ceramics were prepared with composition 45CaO-25TiO2-35P2O5 (mol%). Two molar percent of Na2O was added as a flux to the composition. With the aforementioned composition, glass melted and crystallized into glass-ceramics containing β-Ca3(PO4)2 and CaTi4(PO4)6 as the main phases. The differential thermal analysis (DTA) was conducted to determine the suitable temperatures f...
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