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Afișează articolele 512-531 of 552

    • The Unusual Electomagnetic Proprieties of Fabric Reinforced Epoxy Composites 

      Bunea, Marina; Bria, V.; Cîrciumaru, A.; Bîrsan, I. G. (Universitatea "Dunărea de Jos" din Galați, 2015)
      In this research, the electromagnetic behavior of four composite materials was investigated as an important issue of composite researchers is to control the electrical properties of polymer matrix composites. The four ...

    • The Use of Systems Analysis in Environmental Engineering 

      Paraschiv, Spiru; Paraschiv, Lizica Simona; Ion, Ion V. (Universitatea "Dunărea de Jos" din Galați, 2005)
      The depletion of energy resources has been of primary concern in the `70s and `80s. In recent years, the decline of the environment due primarily to our energy-related activities has become severe and raises serious ...

    • The Use of Ultrasound in the Treatment Process of Wastewater. A Reviuw 

      Matei, Nicoleta; Scarpete, Dan (Universitatea "Dunărea de Jos" din Galați, 2015)
      In this paper, different types of ultrasound devices for the treatment process of wastewater are presented. The use of ultrasound in treatment processes is a method of perspective, an alternative to conventional methods. ...

    • The Value of the Structural Remanence and Thermic Tensions in the Forged Pieces 

      Ciurea, Aurel; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2005)
      The plastic deformation, the heating and the cooling of the pieces submitted to plastic deformations acumulate remanent tensions inside the pieces. Knowing the environmental where they are produced and avoiding its ...

    • Theoretical Study regargind the Flow Conditions for Alloys Through thin Channels 

      Mărginean, Ioan; Verdeș, Bogdan-Alexandru; Cocolas, Sorin-Adrian (Universitatea "Dunărea de Jos" din Galați, 2010)
      A common tool used to demonstrate the phenomenon of movement of liquids through thin channels is the capillary tube. When the lower end of the tube is placed vertically in a liquid (such as water), it forms a concave ...

    • Thermal Analysis of Inoculated Grey Cast Irons 

      Chisamera, Mihai; Stan, Stelian; Riposan, Iulian; Ştefan, Eduard; Costache, George (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      A research was done to investigate the effect of 0.05…0.25wt.% addition rate of Ca, Zr ,Al – FeSi alloy, in ladle and in-mould inoculation of grey cast irons. In the present paper, the conclusions drawn are based on ...

    • Thermal Decomposition of Hafnium Ethoxide-Mollecular Precursor for Hafnia Dielectric Thin Films 

      Vâlcu (Herbei), Elena Emanuela; Mușat, Viorica; Leedham, Timothy (Universitatea "Dunărea de Jos" din Galați, 2012)
      The HfO2 thin-film is a very promising gate dielectric material for last generation transistors. The paper presents the thermal decomposition of hafnium ethoxide used as molecular precursor for obtaining hafnia thin ...

    • Thermo-Mechanical Analysis of Sprayed Layers Using the Finite Element Method 

      Gheța, Roxana-Alexandra; Dumitru, Bogdan; Dumitru, Gabriel Marius; Militaru, Mădălina-Elena (Universitatea "Dunărea de Jos" din Galați, 2016)
      The present paper presents an analysis performed in order to determine the thermo-mechanical behavior at the layer-substrate interface in case of thermal spraying, by using the ANSYS R15.0 software. The analysis was made ...

    • Thermodynamic Assesment of the Ci-Ti System in Microalloyed Copper Base Alloys 

      Vlad, Maria (Universitatea "Dunărea de Jos" din Galați, 2006)
      The correlations made between thermodynamic and kinetic data of the heterogeneous systems provided insight into the alloys properties. Experimental researches presented in this paper refer to the thermodynamics of Cu-Ti ...

    • Thermomechanical Process Simulation to Predict Processing of Mechanical Properties of Alloys Al-Zn-Mg-Cu 

      Neacșu, Marian-Iulian; Vasilescu, Elisabeta; Hanganu, Doru (Universitatea "Dunărea de Jos" din Galați, 2013)
      This paper presents how to perform simulation (prediction) mechanical properties of aluminum alloys of the system Al-Zn-Mg-Cu. Graphical interface that can predict the mechanical properties studied was performed using ...

    • Thermomechanical Processing of Microalloyed Steels Used for Naval and Oil Industries 

      Doniga, Ana; Vasilescu, Elisabeta; Istrate, Miltiade; Măcuță, Silviu (Universitatea "Dunărea de Jos" din Galați, 2005)
      This paperwork shows the laboratory experiments made on X60 and X65 steels with several intercritical thermomechanical treatment application. Two variants were used: “down-up” thermomechanical treatment with heating and ...

    • Thin Metallic Superficial Layers with Special Properties Deposed on Steels by Electric Discharge in Impulse 

      Tănăsucu, Sorinel; Alexandru, Ioan; Strugaru, Sorin Iacob; Alexandru, Adrian (Universitatea "Dunărea de Jos" din Galați, 2006)
      The surface engineering, as interdisciplinary technical science is a relative new concept which appeared in high developed countries as a result of the processing of the metallic materials with distinct properties and ...

    • Time Analysis of King Mattehias the IST Sculptural Group 

      Sabău (Chelaru), Julieta Daniela (Universitatea "Dunărea de Jos" din Galați, 2010)
      The paper presents a study on the degradation of the King Matthias I sculptural group caused by environment factors and influenced by the casting technology and by the assembling method. During this study, samples from ...

    • Time Scales of Phisico-Chemicaly Driven Processes in Desulphurization CaO-Al2O3 Slag 

      Niță, Petre Stelian (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper is dealing with the expression of times scales associated to different physically and physico-chemically driven processes taking place on the slag side of the interface CaO-Al2O3 slags-steel, specific to the ...

    • Transparent and Conducting TIN Oxide Thin Films Deposited by Spray Pyrolysis 

      Fortunato, Elvira; Elangovan, Elamurugu; Danciu, Anca-Ionela; Tecaru, Alexandru; Mușat, Viorica (Universitatea "Dunărea de Jos" din Galați, 2009)
      The chemical spray pyrolysis technique has been one of the major techniques to deposit a wide variety of materials in thin film form, for different applications. The most important control parameters for obtaining good ...

    • Treatment of Ammonia Wastewater by Ultrasound. Part I: The Influence of the Ultrasound energy on the ultrasound Bath Temperature 

      Matei (Ciobotaru), Nicoleta; Scarpete, Dan (Universitatea "Dunărea de Jos" din Galați, 2015)
      The industrial ammonia water decontamination depending on the sample temperature is monitored by this study. The treatment was conducted by the UP100S ultrasound generator (Hielscher Ultrasound Technology, Germany), operating ...

    • Treatment of Wastewater Resulting from the Mettallic Coatings Process 

      Radu, Tamara (Universitatea "Dunărea de Jos" din Galați, 2016)
      The technological cleaning processes of steel strip surfaces used in metal coatings require organic or inorganic chemicals with a high risk of toxicity. To avoid pollution, the water resulting from these processes must ...

    • Tribocorrosion-insight Into Material Degradation in Specific Environments 

      Bașa, Sorin-Bogdan; Benea, Lidia (Universitatea "Dunărea de Jos" din Galați, 2014)
      Tribocorrosion is an irreversible surface degradation mechanism of a metallic and/or non-metallic material as a result of its physicochemical and mechanical interactions during relative motion (friction, sliding, impact, ...

    • Tribological Behaviour of Nitrocarburized Steels After Thermo-Magnetic Treatments 

      Papadatu, Carmen Penelopi (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      Two types of steels were subjected to a nitro-carburized thermo-chemical treatment after thermo-magnetic treatments. The structural aspects into the superficial layer of these steels are studied during the friction process ...

    • Tribological Studies Regarding the Crude Rapeseed Oil Press 

      Șolea, Liviu (Universitatea "Dunărea de Jos" din Galați, 2016)
      The aim of this paper is to present a tribology test conducted on crude rapeseed oil press. The experiments were carried out with four-ball machine. The oil was tested at speed of 1000 rot/min and loads of 140 N and 200 ...