Căutare 1993 -2018 după Titlu

Afișează articolele 425-444 of 552

    • Studies Concerning Energetic Consumption of Some Heating Equipments with Resistors 

      Minea, Alina; Carabet, Roxana (Universitatea "Dunărea de Jos" din Galați, 2007)
      In order to increase the resistance of aluminium alloys a complex heat treatment is usually performed. Therefore, we must consider the reaction time between aluminium alloys and furnace atmosphera. These atmospheres ...

    • Studies on the Effects of Olive Oil Oxidation 

      Șolea, Liviu; Crețu, Romică (Universitatea "Dunarea de Jos" din Galați, 2013)
      The aim of this study is the viscosity’s evolution depending on the temperature and the shear rate and the analysis of the transmittance spectra of the oxidized olive oil. Oxidation of olive oil is a process that leads ...

    • Studies Regarding Nickel Electrodeposition from Watts bath with Addition of Polyvinylpyrrolidone and Sodium Saccharine 

      Vasilache, Violeta; Gutt, Sonia; Gutt, Georg; Sandu, Ion; Vasilache, Traian; Sandu, Victor Andrei (Universitatea "Dunarea de Jos" din Galați, 2009)
      This paper is based on some studies about the influence of polyvinylpyrrolidone (PVP) and sodium saccharine as far as concern their influence on the nickel electroplating processes from Watts bath. PVP is a wetting ...

    • Studies Regarding the Cooling of the Rolled Pieces With Atomizing Water 

      Ciurea, Aurel; Bordei, Marian; Ciurea, Aurel; Bordei, Marian; Dragomir, Ștefan (Universitatea "Dunărea de Jos" din Galați, 2006)
      The diversity of metallurgical materials and processes imposes a large scale of cooling speeds. The classical cooling mediums restrict the scale of the cooling speeds, reason for which nonconventional alternatives were ...

    • Studies Regarding the properties Modification of AISI 310S Steel 

      Achiței, Dragoș-Cristian; Cimpoeșu, Ramona; Perju, Manuela-Cristina; Cimpoeșu, Nicanor; Țugui, Andrei-Cătălin (Universitatea "Dunărea de Jos" din Galați, 2017)
      The paper presents an analysis of classical heat treatments, which can be applied to AISI310S steel samples. The influence of these heat treatments was highlighted by micro-hardness measurements – Vickers method, and ...

    • Study about the Perception of Producers from Romania Regarding the Ecolabel 

      Temea, Antonina; Panaite-Lehăduș, Mirela; Bârsan, Narcis; Tomozei, Claudia; Nedeff, Valentin (Universitatea "Dunărea de Jos" din Galați, 2017)
      The purpose of this paper is to obtain information about the Romanian producers’ perspective on some key elements regarding the environmental aspects of their company, data on the certification SR EN ISO 14001: 2015 and ...

    • Study and Researche Regarding Binaring Sistem with TIOBIS - β – NAFTOL 

      Mitoșeriu, Olga; Constantinescu, Stela; Orac, Lucica (Universitatea "Dunărea de Jos" din Galați, 2007)
      This paper presents the results for contribution of determining the manganese from waters and steel. Manganese, due to its properties, cannot be found but in acid waters and usually associated with iron. In small amounts, ...

    • Study for Evaluation and Optimization of Mineral Composition and Structure of Iron Ore Granulation in Sintering Process 

      Mogoş, Paul Petruş; Constantin, Nicolae; Ittu, Sînziana; Anca, Denisa-Elena; Harcea, Lavinia-Marilena (Universitatea "Dunărea de Jos" din Galaţi, 2012)
      The characterization of iron ore particles is of vital importance for the study of mineral composition. The specific surface area of iron ore particles can be measured by laser diffraction, and mathematical models (based ...

    • A study of Electric Properties of Fiber Fabric Based Filled Epoxy Composites 

      Andrei, Gabriel; Cîrciumaru, Adrian; Bîrsan, Iulian; Dima, Dumitru (Universitatea "Dunărea de Jos" din Galați, 2007)
      Electric and magnetic properties of laminate carbon fiber fabric based epoxy composites are investigated through experimental techniques. Various concentrations of powder fillers were used in order to change the basic ...

    • A Study of Electromagnetic properties of Fiber Fabric Based Filled Epoxy Composites 

      Cîrciumaru, Adrian; Bîrsan, Iulian; Andrei, Gabriel; Dima, Dumitru (Universitatea "Dunărea de Jos" din Galați, 2007)
      Electric and magnetic properties of laminate carbon fiber fabric based epoxy composites are investigated through experimental techniques. Various concentrations of powder fillers were used in order to change the basic ...

    • Study of Heat Treatment Influence on Aluminum-Based Alloy ATN-Si10Cu4 

      Vasilescu, Elisabeta; Boiciuc, Simona (Universitatea "Dunărea de Jos" din Galați, 2007)
      This work presents the experimental results concerning the behavior on heat treatment of on aluminum based alloy. The laboratory level experiments achieved on samples of ATN-Si10Cu4 (4145 series) alloy illustrate the ...

    • Study of Severe Plastic Deformation by Torsion Test 

      Gurău, Carmela; Gurău, Gheorghe; Cănănău, Nicolae (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      High Torsion Pressure (HPT) is an advanced tool for inducing very significant grain refinement in a wide range of metals. In this research were studied parameters of severe plastic deformation using the torsion test. The ...

    • Study of the Inclusions from the Oriented Grains Silicon Steels and Their Influence on the Texture 

      Doniga, Ana; Vasilescu, Elisabeta (Universitatea "Dunărea de Jos" din Galați, 2006)
      The paper presents experimental results concerning the inhibitor phases generation by microalloying elements utilization. It was made experiments on three silicon steel charges. It was observed that the inhibitor phases ...

    • Study of the RV52 Steel Plates Properties After Thermic Treatment 

      Vlad, Maria; Constantinescu, Stela (Universitatea "Dunărea de Jos" din Galați, 2009)
      The thermal treatment of RV52 steel plates determines high mechanical properties such as: strength, wear resistance and tenacity. The normalized plate samples were studied to determine the effect of the tension release ...

    • Study of the Sintering Process of Iron Powders Coated with Nano-Hydrocarbon and the Resulting Microstructure at Temperatures up to 1200°C 

      Georgiev, Jordan; Anestiev, Lubomir; Bendereva, Ekaterina; Lukarski, Yavor; Marcela, Selecka; Gavrilova, Rositsa (Universitatea "Dunărea de Jos" din Galați, 2009)
      The objective of the research is development and study of a new ecologically friendly and technologically advanced method for introduction of carbon during sintering of low alloyed iron powders ASC 100.29. The method is ...

    • Study of the Thermodynamic Regime at the Continuous Casting of Steel 

      Ivănescu, Alexandru; Ivănescu, Lilica; Cireșica, Cocindau; Munteanu, Viorel (Universitatea "Dunărea de Jos" din Galați, 2007)
      The paper presents the evolution of the heat exchange coefficient along the path of the continuous casting unit, as a function of the cooling water flow rate and the path length. The optimization of this thermodynamic ...

    • Study of the Thermomechanical Treatment Post-Deformation Maintaining Time Influence on the Mechanical Characteristics of the Microalloyed Steels 

      Vasilescu, Elisabeta; Neacșu, Marian (Universitatea "Dunărea de Jos" din Galați, 2007)
      This paper-work shows the results of the laboratory researches of the postdeformation maintaining time influence on the physical-mechanical characteristics of the flat microalloyed steels, at high temperature thermomechanical ...

    • Study of Tribocorrosion Processes by Electrochemical Techniques 

      Benea, Lidia; Drăgan, Viorel (Universitatea "Dunărea de Jos" din Galați, 2007)
      Tribocorrosion is defined as the chemical-electrochemical-mechanical process leading to a degradation of materials in sliding, rolling or erosion contacts immersed in a corrosive environment. That degradation results ...

    • Study of Zro2/Co-Deposition with Cobalt from Chloride Electrolyte 

      Benea, Lidia; Sorcaru, Florentina Simona (Universitatea "Dunărea de Jos" din Galați, 2009)
      The metal-matrix composites are materials in which the properties of a metallic host material are modified with addition of a second phase (ceramics) by electrodeposition process. The second phase can be hard oxides or ...

    • Study on Refractory Material Used Forthe Wear Laver of the Tundish 

      Tudor, Beatrice (Universitatea "Dunărea de Jos" din Galaţi, 2014)
      The continuous casting of steel is a modern and efficient process for the production of semi-finished products required for the other components of steel industry. In order to improve the quality of continuous cast slebs ...