Fascicula IX: Recent submissions

Afișează articolele 261-280 of 552

    • Aspects Regarding the Atmosphere Pollution Monitoring 

      Balint, Lucica; Rîpă, Minodora; Nită, Petre; Radu, Tamara; Lebădă, Simona (Universitatea "Dunarea de Jos" din Galați, 2005)
      This paper presents information regarding the variation of aerosols concentration in a central area in Galati city. For a period of time of 2 years and 5 months, there have been done correlations between aerosols ...

    • Estimation of the Metallurgical Industry Impact on the Environment 

      Ciurea, Aurel; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2005)
      Objectively, the ecosystem in its development and working implies the accumulations on of some nonconcordances. Summing these disfunctions without taking into consideration their attenuation, may lead to producing, achieving ...

    • A Researches for the Determination of the ATC Si10Mg Alloy Fatigue Life, function of Different Applied Thermal Treatment Cycles 

      Dima, Adrian; Minea, Alina Adriana; Dima, Iulia-Margareta (Universitatea "Dunărea de Jos" din Galați, 2005)
      The experimental researches which were made, emphasized the opportunity of applying heat treatment cycles, in order to increase fatigue life of ATC Si 10 Mg alloy. The increase of minimum fatigue resistance is approximately ...

    • The Properties of Hardened Lead 

      Potecașu, Florentina; Potecașu, Octavian; Drugescu, Elena (Universitatea "Dunărea de Jos" din Galați, 2005)
      Lead hardened through oxide scattering is investigated as raw materials for the fabrication of the support gratings of lead accumulators in order to increase their life service. For the preparation of lead powder hardened ...

    • Some Aspects Regarding the Influence of Tribologycal Factors on the Superficial Layers of Steels Treated with Plasma Nitriding 

      Papadatu, Carmen Penelopi; Vasile, Elisabeta (Universitatea "Dunărea de Jos" din Galați, 2012)
      Some 38MoCrAl09 (SAE 4038) steel grade samples were subjected to plasma nitriding treatment regimes. The structural and diffractometric aspects of the superficial layers of the steel are studied after the wear tests by ...

    • Assessment of Blast Furnace slag Transformation Into value Added by-Products on Basis on Knowledge of Slag Characteristics 

      Ciocan, Anișoara (Universitatea "Dunărea de Jos" din Galați, 2012)
      Slags are the main by-products generated during iron and crude steel production and the steel industry is committed to increasing and improving their recycling. Today the quantity of slag produced and its utilization are ...

    • Mathematical Modeling of the Heat Treatment Process Applied to Alloy Al-Zn-Mg-Cu-4.5% Zn, Used in Aeronautics 

      Neacșu, Marian; Hanganu, Doru (Universitatea "Dunărea de Jos" din Galați, 2012)
      This paper presents mathematical modeling based on the regression analysis method by active experiment of a thermal treatment process applied to an alloy belonging to Al-Zn system, which finds application in aeronautics. Using ...

    • Low Potential Heat Recovery Using Heat Pumps 

      Tofan, Sorinel; Panait, Tănase (Universitatea "Dunărea de Jos" din Galați, 2012)
      This paper presents a study on the possibility of recovering low thermal potential heat from the cooling technological water of industrial processes. The analysed solution consists in the use of a heat pump which would ...

    • Augmented Reality-Applid Informatics Technology to products Maintenance, Repair and Servicing 

      Ionescu, Ana-Maria; Petrea, Ionel; Marin, Florin Bogdan (Universitatea "Dunărea de Jos" din Galați, 2012)
      Augmented Reality (AR) enhances a user's perception of the real world by enhancing it with specific objects that are over-imposed to the real objects. The virtual objects display information that the user may use. The ...

    • Nanostructured SiC-Ni Composite Coatings Obtained by Electrodeposition-a Tribocorrosion Study 

      Benea, Lidia; Iordache, Viorel; Wenger, François; Ponthiaux, Pierre (Universitatea "Dunărea de Jos" din Galați, 2005)
      The tribocorrosion properties of SiC (20nm) - Ni nanostructured coatings have been studied in pin on disc tribocorrosimeter connected with an electrochemical cell. The objectives of our study in principal is to fully ...

    • Synthesis and Characterisation of Ag/SnO2/Clay Nanocomposites with Potential Application as Photocatalysts 

      Hristodor, Claudia-Mihaela; Tănase, Diana; Vrînceanu, Narcisa; Copcia, Violeta-Elena; Pui, Aurel; Popovici, Eveline (Universitatea "Dunărea de Jos" din Galați, 2012)
      This work reported a novel synthesis and characterization of Ag/SnO2/clay nanocomposites. The obtained materials were characterized using techniques such as X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy, ...

    • Choosing and Using Rationally the Thermic Processed Steels 

      Potecașu, Octavian; Potecașu, Florentina (Universitatea "Dunărea de Jos" din Galați, 2012)
      On a global scale one can notice a constant preoccupation for a rational choosing and using of the materials on the whole and, especially of the steels with the main objective the increase of the machines’, equipment’ ...

    • Asphalt Pavement and Energy Collection 

      Vasiliu, Adrian; Buruiană, Daniela Laura (Universitatea "Dunărea de Jos' din Galați, 2012)
      Romania, as an EU member state is bind to appraise and disseminate accurate and updated information about quantities, types, sources, production, transformation and consumption of energy in order to monitor the impact ...

    • Mechanical properties and Abrasive Wear Behavior of Fluidized-bed Carburized Sintered Iron Alloys 

      Marin, Mihaela; Potecașu, Florentina; Drugescu, Elena; Potecașu, Octavian; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galați, 2012)
      This paper is a study of the influence of fluidized bed carburizing of sintered steels on the mechanical properties and the abrasive wear behavior for two different types of powder. Carburizing was carried out at a ...

    • Research on the Production of Sintered Powder 316 

      Boiciuc, Simona; Potecașu, Florentina (Universitatea "Dunărea de Jos" din Galați, 2012)
      The 316 austenitic stainless steel powders are typically used in applications requiring good corrosion resistance, mechanical strength at high and very low temperatures, good ductility, wear resistance, associated in ...

    • Improvement of Casting Technology by Using of Exothermic Feeder Head and Simulation the Solidification Alloy 

      Tudor, Beatrice (Universitatea "Dunărea de Jos" din Galați, 2012)
      This paper presents a simulation program use of feeders exothermic and insulating plates. High quality casting is considerably improved by using solidification simulation flow and cast.

    • Measurement and Analysis of Vibrations on a Cold Rolling Mill for Steel Strip 

      Dragomir, Ștefan; Diaconu, Nicolae; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2012)
      In this paper the authors made measurements and registration of vibration by using accelerometers posted on the top backup rolls. This is a new way for predict the damage in the rolling mill equipment and the precision ...

    • Method of Deternining the Main Features of Magnetic Ferromagnetic Materials 

      Gheorghieș, Livia; Dima, Ovidiu (Universitatea "Dunărea de Jos" din Galați, 2012)
      The purpose of this paper is to present a method for determining the main magnetic features such as magnetic induction B, magnetization M, the coercive magnetic field Hc, permeability μ, using hysteresis cycle chart. The ...

    • An Isothermal Model for Evaluating Stress and Strain in the Polymeric Block of the Block-on-Ring System 

      Georgescu, Constantin; Boazu, Doina; Ștefănescu, Ioan; Deleanu, Lorena (Universitatea "Dunărea de Jos" din Galați, 2012)
      This paper presents the results of simulating an isothermal frictional contact between a polymeric block and a steel ring. The model takes into account the elasto-plastic behavior of the polymeric materials and the ...

    • Behavior of Refractories in Interaction with Metallurgical Slag 

      Potecașu, Florentina; Muntean, Marcela; Ivan, Mariana (Universitatea "Dunărea de Jos" din Galați, 2012)
      The aim of this paper is to present the studies concerning behavior of the refractory to metallurgical slag corrosion. The corrosion resistance at high temperatures using the static method on samples containing chamotte ...