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Afișează articolele 301-310 of 1945
Estimation of the Operability Index of a Containership Operating in the Black Sea
(Universitatea ”Dunărea de Jos” din Galați, 2009)
The calculation of the operability index, which represents the percentage of time during which the ship is operational, depends on the wave climate of the ocean area where the ship operates, the dynamic response of the ...
Steel on Silicon Nitride Hybrid Tribological Systems Lubricated by Kerosene. Tests on a fFour-Ball Machine
(Universitatea ”Dunărea de Jos” din Galați, 2009)
The kerosene can be used not only as a fuel for jet engines, but also as lubricant of the various mechanisms of modern jet aircrafts and turbine helicopters [1]. In order to determine the wear resistance of hybrid ...
Aspects of Rheological Behavior of Rapeseed Oil
(Universitatea ”Dunărea de Jos” din Galați, 2009)
This paper presents a study of dynamic viscosity variation with shear rate for rapeseed oils obtained from different stages of processing and the hydraulic oil grade H32. For each of the 6 types of oils studied was determined ...
Sliding Indentation Behaviour of x 65 Hydrogenated Steel Grade
(Universitatea ”Dunărea de Jos” din Galați, 2009)
The paper presents an experimental research on non-hydrogenated and hydrogenated X 65 steel samples. The steel was obtained from a continuous casting slab, this grade being used in petroleum industry. The hydrogen has an ...
The Behaviour of Two Non-Conventionally Treated Steels During Corrosion Process
(Universitatea ”Dunărea de Jos” din Galați, 2009)
This paper presents an analysis on two steel grades, subjected to nitriding thermo-chemical treatment after classic / thermo-magnetic treatments (in direct current/alternative current). It was estimated the durability of ...
Copper Plating Corrosion Study in Certain Environments
(Universitatea "Dunărea de Jos" din Galați, 2013)
Copper plating was performed on nickel substrate by means of the
potentiostatic electrodeposition method from a sulphate electrolyte solution. The
copper coatings morphology was studied by means of the optical and ...
Reducing the Zinc Emissions by Upgrading of Steel Scraps Quality
(Universitatea 'Dunărea de jos" din Galați, 2013)
The steel production is one of the major sources of heavy metals emissions to
the environment. There are several possibilities for prevention and minimization of
these pollutants. Emission reduction measures focus on ...
Modelling and Numerical Simulation of the Atmospheric Dispersion of Pollutants from an Integrated Iron and Steel Complex-Part I
(Universitatea "Dunărea de Jos" din Galați, 2010)
The Iron and Steel Complex processes handle, store and undertake important
amounts of raw materials (iron ores, coals, etc.) energy, fuels, waste waters, slags
and other different types of wastes. These activities have ...
Coating of the Lasting Moulds with Hard Alloys
(Universitatea "Dunărea de Jos" din Galați, 2010)
This paper presents the researches on the welded coating of lasting moulds used
for casting at high melting temperatures. It shows that the coating through the flux
welding with the addition of metal powders and graphite ...
Performing System for Purifing Waste Water
(Universitatea "Dunărea de Jos" din Galați, 2010)
Status of water pollution can be controlled and reduced. For this purpose it uses
two types of processes, applied more or less consistently by the management and
technical design. The first group of processes is characterized ...