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Afișează articolele 325-344 of 552

    • Processing Smart Wires from Cu-Al-Ni System 

      Gurău, Carmela; Gurău, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2006)
      In this paper we present some results concerning plastic deformation applied to shape memory alloy and two most direct characterization methods for shape memory. We work with a copper based alloy- Cu Al13Ni 4. Over eight ...

    • Profilometric Analysis of Worn Surface of Bronze, Iron and Iron Composite Samples, by Pin-on -Disk Method 

      Iliuță, Virgil; Ciupagea (Coteț), Gabriel Andrei; Rîpă, Minodora (Universitatea "Dunărea de Jos" din Galați, 2013)
      In this study are presented the results of profilometric analysis for the wear of bronze materials, cast iron and composite materials. These materials were tested under dry wear conditions, using "pin-on-disk" method on ...

    • Properties and Applications of Nanocellulose Polymer Composites. A Short Review 

      Rodeanu, Magdalena Silvia; Baștiurea, Marian; Andrei, Gabriel; Dima, Dumitru (Universitatea "Dunărea de Jos" din Galați, 2013)
      This paper covers some aspects related to the structure of natural cellulose fibers as well the sources, obtaining methods, properties and their applications. In contrast with aramide and other materials resulted from ...

    • Properties of Slags in the System CaO-MgO-Al2O3-SiO2, Important in Deoxidization and Desulphurization of Low Carbon Aluminium Killed Steels 

      Niţă, Petre Stelian (Universitatea "Dunărea de Jos" din Galaţi, 2012)
      Properties of refing slags belonging to the system CaO-MgO-Al2O3-SiO2 are important in simultaneous or succesive refinig treatment processes in the ladle and other refing metalurgical reactors. The efficiency of treatments ...

    • Protective and Decorative Vacuum's Coatings on Wares of Artistic Castings 

      Grechanyuk, V.; Grechanyuk, I.; Grechanyuk, N. (Universitatea "Dunărea de Jos" din Galați, 2006)
      The problem of environmental protection is extraordinarily important, and its actuality will increase with every year. In this aspect, processes of depositing of coatings in vacuum have got serious advantages before ...

    • Prreparation and Characterisation of Alumina Template Obtained by One-Step Anodization Method 

      Gavril (Donose), M.D.; Cantaragiu, A.M.; Gheorghieș, C.; Țigău, N.; Donose, S. (Universitatea 'Dunărea de Jos" din Galați, 2013)
      The goal of this study was to obtain an alumina template (AAO) by one-step anodization method and to evaluate its optical properties correlated with the annealing temperature. AAO was obtained from two different media: ...

    • Quality Engineering Procedures Applied to Determine the Weight of Influence of Factors on Microtrigeneration Systems (mCCHP) 

      Cazacu, Nelu; Badea, Nicolae; Dobrovici, Sorin (Universitatea "Dunărea de Jos" din Galați, 2009)
      Microtrigeneration systems are characterized by simultaneous generation of power, heat and cold for small applications (<50kW) and are designed for reducing GHG and other emission degreases. The cooling generation by ...

    • Quality Surface Analysis for Polarized Grid Plasma Nitriding 

      Axinte, Mihai; Perju, Manuela-Cristian; Nejneru, Carmen; Hopulele, Ion; Cimpoeșu, Iulian (Universitatea "Dunărea de Jos" din Galați, 2013)
      For the study regarding the effect of the polarized grid a prototype plasma nitriding facility was used. A polarized grid was placed inside the working chamber, into the space between the anode and cathode, a negative ...

    • R.N.U.R. Method of Risk Assessment Based on Ergonomic Criteria. Case Study: Crane Maintenance Electrician 

      Vasiliu, Adrian; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2013)
      This paper presents a case study on the evaluation of a job (electrical maintenance) in AMG plant through a less used method in Romania, respectively Renault method, used especially in France. Means of work are analyzed ...

    • Radial Forging Machine. Technology for Axle Type Parts 

      Hanganu, Doru; Neacșu, Marian (Universitatea "Dunărea de Jos" din Galați, 2013)
      This paper presents three types of radial forging machines to produce the axle type pieces. The new types of radial forging machines are presented cinematically. The movement of the deformation tools at these types of ...

    • Rapid Synthesisof ZnO Micro and Nanostructures 

      Plăiașu, Adriana Gabriela; Abrudeanu, Mărioara (Universitatea "Dunărea de Jos" din Galați, 2009)
      This paper focuses on the newer chemical synthesis of zinc oxide powders and the effects of reaction temperature and possible mechanism of ZnO formation. The study of the reaction mechanism at different temperatures has ...

    • Reasearches Regarding Structural Changes Due to Nickel Microlalloying of Hot Galvanizing Baths 

      Boiciuc, Radu; Preda, Adriana; Boiciuc, Simona (Universitatea "Dunărea de Jos" din Galați, 2005)
      This work offers a synthesis of researches performed in laboratory and regards the nickel microalloying of hot galvanizing baths. Experiments followed the structural changes of both hot galvanizing bath and deposed layer ...

    • Reasearches Regargindg the Influence of Steam Oxidation on Sintered Alloys Properties 

      Marin, Mihaela; Potecaşu, Florentina; Potecaşu, Octavian (Universitatea "Dunărea de Jos" din Galaţi, 2013)
      In this paper is studied the influence of steam treatment applied on sintered steels and the mechanical properties and abrasive wear behavior for two different types of powder. Steam treatment was carried out at temperature ...

    • Recovery of Copper from Waste Cables used in Electrical Appications 

      Bașliu, Vasile; Ciocan, Anișoara; Tudor, Beatrice (Universitatea "Dunărea de Jos" din Galați, 2015)
      The recycling of copper cables wastes has as main objective the recovery of copper. The effectiveness of this operation is guaranteed by the following factors: infrastructure able to collect, select and sort these wastes; ...

    • Recycling of Cellulosic Waste in the Energy Sector 

      Drăgan, Mircea Viorel (Universitatea "Dunărea de Jos" Galați, 2014)
      Biomass is one of the Earth’s most abundant and precious resources. It offers not only food but also energy, materials used for construction, chemicals and much more. Biomass has always been used for generating energy ...

    • Recycling of Hematite Fine Waste by Pelletisation 

      Ciocan, Anișoara; Tudor, Beatrice (Universitatea "Dunărea de Jos" din Galați, 2017)
      A large volume of by-products and residues is generated during iron and steel production. Much of these represents valuable materials and can be recovered and recycled inside the flow of integrated steel plants. The ...

    • Recycling of Integrated Steel Plant Solid Wastes in the Sintering Process and Corresponding Effects on Pollutant Emissions 

      Ciocan, Anișoara; Tudor, Beatrice (Universitatea "Dunărea de Jos" din Galați, 2013)
      The new practices in sintering technology allows for the use of a wide range of iron-containing materials in charge with obtaining the agglomerate with necessary characteristics for optimal operation of the blast furnace. ...

    • Recycling Possibilities of Metallurgical Slag 

      Cioroi, Maria; Nistor (Cristea), Licuța (Universitatea "Dunărea de Jos" din Galați, 2007)
      The target of the current metallurgical industry is to recycle and utilize all their by-products. Slags are the important wastes and by-products of metallurgical industry, which have been treated, recycled and used ...

    • Redesigning a Jaw Crusher Using Value Analysis Part I 

      Chichernea, Florin; Chichernea, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2009)
      Value Analysis (VA) is a method that provides an operating technique using a creative and organized approach. It is managed by a group, each of them selected according their expertise in specific subjects and coordinated ...

    • Redesigning a Jaw Crusher Using Value Analysis. Part II 

      Chichernea, Florin; Chichernea, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper presents a complete study of VALUE ANALYSIS applied concretely to a selected piece of equipment. The phases and ITERATIVE operation of the Value Analysis method are presented. Value Analysis combines both ...