مرور Volume 21, Issue 2 بر اساس تاریخ انتشار

در حال نمایش موارد 1 - 10 از 10

  • Gypsum Dissolution Effects on the Performance of a Large Dam (TECHNICAL NOTE) 

    Fakhri, Behnam؛ Sadr Karimi, Jamshid؛ Kiyani, M. (Materials and Energy Research Center, 2008-08-01)
    Upper Gotvand dam is constructed on the Karun River located in the south west of Iran. In this paper, 2D and 3D models of the dam together with the foundation and abutments were constructed and several seepage analyses ...

  • Formation of Lanthanum Hydroxide Nanostructures: Effect of NaOH and KOH Solvents 

    Shayegh, M. R.؛ Kajbafvala, A.؛ Zanganeh, S.؛ Mazloumi, Mahyar؛ Sadrnezhaad, S.K. (Materials and Energy Research Center, 2008-08-01)
    Lanthanum hydroxide (La(OH)3) nanostructures, including elliptical nanoparticles, octahedral rods and irregular nanoparticles were prepared chemically in NaOH and KOH solutions with 10 M concentration. The obtained powders ...

  • The Effect of Nickel Increasing and Aluminum Addition on Sulfidation Resistance of Fe-Ni-Cr Alloys (TECHNICAL NOTE) 

    Bozorgmehr, M.؛ Kordzadeh, E. (Materials and Energy Research Center, 2008-08-01)
    In this research the effects of; increasing the amount of nickel and adding aluminum to create and prolong sulfidation resistance of Fe-Ni-Cr alloys have been investigated. Sulfidation tests were carried out at 1100°C in ...

  • Supercritical Fluid Extraction of Carotenoid from Microalgae with Projected Thermodynamic Models (RESEARCH NOTE) 

    Zainal, A.؛ Kassim, K. M.؛ Davarnejad, reza؛ Sata, S. A. (Materials and Energy Research Center, 2008-08-01)
    In this study, two thermodynamic models (regular solution theory and equation of state) were applied to obtain carotenoid solubility in the supercritical carbon dioxide solvent. Theoretical data obtained from the models ...

  • Hydrothermal Synthesis of Aligned Hydroxyapatite Nanorods with Ultra-High Crystallinity 

    Sadrnezhaad, S.K.؛ Yazdani, B.؛ Rahimipour, M. R.؛ Manafi, S.؛ Amin, Mohammad Hassan (Materials and Energy Research Center, 2008-08-01)
    Hydroxyapatite nanorods aligned with ultrahigh crystallinity and high-yield were successfully synthesized through a hydrothermal approach. In this experiment, a new composition of cetyltrimethylammonium bromide ...

  • Failure Process of Stone Columns in Collapsible Soils 

    Etezad, M.؛ Hanna, A.؛ Ayadat, T. (Materials and Energy Research Center, 2008-08-01)
    Many countries in the word have loose and unstable soils encompassing a wide range ofgeological materials, which when inundated, may collapse and cause very significant distress to the structure. Stone columns have been ...

  • Optimization of HFDS Production from Date Syrup (RESEARCH NOTE) 

    Vossoughi, M.؛ Alemzadeh, Iran؛ Jamshidi Mokhber, M. (Materials and Energy Research Center, 2008-08-01)
    Fructose is utilized as a common sweetener in many food industries. Today, a large amount of HFCS (high fructose corn syrup, an equilibrium mixture of glucose and fructose) is produced by glucose isomerase, immobilized ...

  • The Analysis of Longitudinal Shrinkage in Butt Weld Joint (TECHNICAL NOTE) 

    Babakoohi, S.؛ Iranmanesh, M. (Materials and Energy Research Center, 2008-08-01)
    In this research longitudinal shrinkage of two steel plates with identical thickness that are joint together through butt welding and another steel plate with bead welding. This study begins withthe introduction of a model, ...

  • Acousto-Refrigerator with an Adjustable Mechanical Resonator (RESEARCH NOTE) 

    Basir Jafari, S.؛ Abolhassani, M. R.؛ Amjadi, A. (Materials and Energy Research Center, 2008-08-01)
    Thermoacoustics describes energy conversion processes, activated by interaction temperature oscillation, accompanying the pressure oscillation in a sound wave, with solid boundaries. In ordinary experience this interaction ...

  • Electrochemical Deposition of Flower-Like Nickel Nanostructures on Well-Defined n-Si (111):H 

    Arami, H.؛ Khalifehzadeh, R.؛ Torabi, M.؛ Sadrnezhaad, S.K. (Materials and Energy Research Center, 2008-08-01)
    In this paper the electrodeposition of nickel on n-Si(111):H substrate, in the presence of sulphuric acid, was studied. Cyclic voltammetry has been used to characterize the electrochemical behavior of the system. The nickel ...