نتایج جستجو برای: pearlite growth rate
تعداد نتایج: 1690072 فیلتر نتایج به سال:
here, we have synthesized vertically aligned carbon nanotubes (va-cnts), using chemical vapor deposition (cvd) method. cobalt and ethanol are used as the catalyst and the carbon source, respectively. the effects of ethanol flow rate, thickness of co catalyst film, and growth time on the properties of the carbon nanotube growth are investigated. the results show that the flow rate of ethanol and...
tuning recombinant protein expression is an approach which can be successfully employed for increasing the yield of recombinant protein production in high cell density cultures. on the other hand, most of the previous results reported the optimization induction conditions during batch and continuous culture of recombinant e. coli, and consequently fed-batch culture have received less attention....
Abstract. According to a rule known as the Okan Law, for one percent decrease (increase) in the unemployment rate, the economic growth rate will increase (decrease) by approximately 0.3 percent. In other words, there is a negative relationship between the unemployment rate and the economic growth rate. This study examines the establishment of this relationship. Contrary to expectations, the rel...
employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull dis...
In this study, structural and crystallographic properties of phase transformations in Fe–Mn– Mo–Si (Mn = 15.14 wt.% 18.45 wt.%) alloys were investigated. The effects heat treatment temperature on microstructure investigated by Scanning Electron Microscopy (SEM) Metallurgical (MM). addition to this, revealed using Transmission (TEM) X–Ray Diffraction (XRD) methods. the samples subjected at 750 ...
The eddy current magnetic signature (EC-MS) method is a relatively new used to evaluate the residual stresses of ferromagnetic steels with higher sensitivity than other techniques. In this study, effects mechanical polishing and ferrite–pearlite structure on shape EC-MS signal were investigated in two experiments clarify effect compressive stress shape. first experiment, work-hardened layers sp...
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
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