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Afișează articolele 544-552 of 552

    • Waste Minimization by Reuse and Recycling 

      Negoiță, Daniela L.; Ion, Ion V. (Universitatea "Dunărea de Jos" din Galați, 2009)
      Recently, pollution prevention directs attention towards the elimination or reduction of undesired by- products within the production process itself before treatment. On the long term, pollution prevention through waste ...

    • Water-in-Diesel Emulsions as Alternative Fuel for Diesel engines part I: Water-inDiesel Emulsions. A Literature Review 

      Vrabie, Vlad; Scarpete, Dan; Chioșa, Bianca Elena (Universitate "Dunărea de Jos" din Galați, 2015)
      Although emulsions have found numerous and various applications in chemical, pharmaceutical and food industries, emulsions of water in diesel fuel are applicable alternative fuels for the existing diesel engines. Wate ...

    • Water-in-Diesel Emulsions as an Alternative Fuel for Diesel Engines. Part II: Performance of Diesel Engines Fueled with Water-in-Diesel Emulsions. A Literature Review 

      Vrabie, Vlad; Scarpete, Dan; Chiosa, Bianca Elena (Universitatea "Dunărea de Jos" din Galați, 2015)
      This paper presents the recent advances of water-in-diesel emulsion fuel studies, especially the impact of using this emulsion fuel to the performance and emissions of diesel engine. Studies revealed that the onset and ...

    • Wear Behavior of Carburizing on Powder Metallurgy Alloys 

      Marin, Mihaela; Potecașu, Florentina; Alexandru, Petrică; Potecașu, Octavian; Drugescu, Elena (Universitatea "Dunărea de Jos" din Galați, 2014)
      In this paper is studied the influence of wear behavior of carburizing in fluidized-bed on sintered alloys produced by powder metallurgy route. In powder metallurgy, carburization is a thermochemically treatment that ...

    • X-Ray Diffraction Analysis at Ultrasonic Welding 

      Dumitrache, Constantin; Bărhălescu, Mihaela; Sabău, Adrian; Comandar, Corneliu (Universitatea "Dunărea de Jos" din Galați, 2009)
      In the article [2] the author present experimental investigations regarding of residual stress distribution in weld bead vicinity of submerged arc welded naval plates. In this way, residual stresses from vicinity of weld ...

    • X-Ray Diffraction Residual Stress Measurements for Quality Control Testing 

      Gheorghieș, Constantin; Cantaragiu, Alina-Mihaela; Stasi, Iuliana Valentina (Universitatea "Dunărea de Jos" din Galați, 2007)
      This paper present the primary difficulties which are associated with the obtaining and interpreting surface X-ray diffraction residual stress results: the surface stresses may be identical for the shoot peening, nitriding ...

    • X-Ray Diffraction Study of the Rewverse Martensitic Transformation in Cu-Al-Ni Shape Memory Alloy 

      Gurău, Carmela; Gurău, Gheorghe; Fernandes, F. M. Braz (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      The paper presents an X ray diffraction study for a cooper based shape memory alloy. The behavior of CuAl13Ni4 alloy, which exhibits a peculiar property, is evaluated by structural changes. On cooling, the martensitic ...

    • XRD Analysis in Front of a Corrosion Crack Tip 

      Gheorghieș, C.; Levcovici, S.; Păunoiu, V.; Gheorgieș, L.; Oancea, C.; Ostache, I.; Alexandru, P. (Universitatea "Dunărea de Jos" din Galați, 2008)
      During exploitation of the heat exchangers some damages can appear in the contact region between the gaskets and the stainless steel walls. The studies upon the material were performed using SEM microscopy, X-ray ...

    • Zinc Layer Removal at the Steel Appliances Scraps 

      Balint, Lucica; Ciocan, Anișoara (Universitatea "Dunărea de Jos" din Galați, 2005)
      All appliances contain an important quantity of steel and iron. These can be further recycled at the end of product usefulness. A component of the appliances is the bodies. These are made from galvanized steel. A study ...