Now showing items 1-20 of 28

    • Multifunctional ZnO-Based thin Films by SOL-GEL Method 

      Mușat, Viorica; Fortunato, Elvira (Universitatea "Dunărea de Jos" din Galați, 2007)
      The paper presents the crystalline structure, morphology, optical transmittance, electrical properties and room temperature photoreduction-ozone oxidation properties of some Al-doped ZnO thin films prepared by sol-gel ...
    • Some Aspects About the Refractory Lining Wear in Furnaces 

      Bedő, Tibor (Universitatea "Dunărea de Jos' din Galați, 2007)
      For melting cast iron, carbon steel, copper and copper alloys the quartzite is still one of the most used lining material and the most cost effective as well. The silica lining has to be replaced frequently due to the ...
    • Experimental Investigation of Fatigue of Thin-Walled Welded Structures of Commercial Vehicle Frames 

      Fokilidis, Athanassios; Savaidis, Georgios (Universitatea "Dunărea de Jos" din Galați, 2007)
      The fatigue behavior of bus frame components consisting of thin-walled tube beams joined together by fillet welding has been investigated. Numerical analysis by means of finite elements and experimental stress analysis ...
    • Basic Mathematical Modeling of the Environmental Processes in the Lower Danube Region [I] 

      Munteanu, Viorel; Costea, Ovidiu (Universitatea "Dunărea de Jos" din Galați, 2007)
      In most environmental pollution problems, the pollutant is released to the environment by the, almost always, turbulent flow of a carrier fluid. The pollutant mixes with the surrounding fluid (air or water) and undergoes ...
    • 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, ...
    • The Monitoring of Chattering in Cold Rolling Mill System with Stands for Thin Strip 

      Dragomir, Ștefan; Dragomir, Georgeta; Spânu, Constantin (Universitatea "Dunărea de Jos" din Galați, 2007)
      Each system (stand – driving) and the continuous rolling line to which it belongs have its own functional and energetically parameters. To reduce any faults of the strip surface it is also necessary to check (eventually ...
    • Study on Some Copper-Molybdenum Based Composite Materials Condensed from the Vapour Phase 

      Grechanyuk, N. (Universitatea "Dunărea de Jos" din Galați, 2007)
      Design features of equipment are given for realizing high-speed process of electron beam evaporation and condensation. Peculiarities of phase composition and structure of a crystallized pool (melt) on copper base are ...
    • Prediction of Buckling and Postbuckling Behaviour of Composite Ship Panels 

      Chirică, Ionel; Beznea, Elena Felicia; Chirică, Raluca; Boazu, Doina (Universitatea "Dunărea de Jos" din Galați, 2007)
      The behavior of ship plating normally depends on a variety of influential factors, namely geometric/material properties, loading characteristics, initial imperfections, boundary conditions and deterioration arising from ...
    • Behaviour at Nitriding in Fluidized Layer of Austenitic Stainless Steels at the Temperature 

      Dima, Ovidiu (Universitatea "Dunărea de Jos" din Galați, 2007)
      Nitriding at low temperatures, 450-500oC of austenic stainless steels lead to the obtaining of the tough layers over 1000 HV005 but having thicknesses of tenths of microns. Moreover, nitriding at 500ºC has determined the ...
    • Manufacture of Stud Link Chain Cable Made of Grade U1 and U2 Steel 

      Drăgan, Viorel; Bordei, Marian; Chis, Chris Mircea (Universitatea "Dunărea de Jos" din Galați, 2007)
      We have analyzed the fabrication technology of the link chain cable made of grade U1 and U2 steel from TREFO S.A. Galati and we had in view during the experiments several rolling programs. The main characteristics of a ...
    • Electric and Electromagnetic Properties of Fiber Fabric Based Filled Epoxy Composites 

      Cîrciumaru, Adrian; Andrei, Gabriel; Bîrsan, Iulian; Dima, Dumitru (Universitatea "Dunărea de Jos" din Galați, 2007)
      Electric and magnetic properties of laminate fiber fabric based epoxy composites are investigated through experimental techniques. Various concentrations of powder fillers were used in order to change the basic properties ...
    • Intermetalic Copper Phase Characteristics and Links with the Gold Sphere in Alumina Cover Sheets 

      Benta, Marius Dan; Mogan, Petre Nicolae; Drăgușin, Georgiana (Universitatea "Dunărea de Jos" din Galați, 2007)
      The time period in which the intermetalic sheet cover is developed into the gold sphere in alumina is fully known being relatively not much literature regarding the morphology ant intermetalic phases growth in the copper ...
    • The Action of the Ultrasonic Vibration Over the Diffusion Process in Gases and Liquids 

      Ciurea, Aurel; Bordei, Marian (Universitatea "Dunărea de Jos" din Galați, 2007)
      Among the new method of studying the properties of the substance and the influence over the most various physical and chemical processes, used in different industrial domains, the main place is occupied by the usage of ...
    • Hydrogen production by Steam reforming of Renewable Raw Materials 

      Matei, Vasile; Mihai, Oana; Jugaru, Traian; Movileanu, Daniela; Borcea, Anca; Matei, Dorina (Universitatea "Dunărea de Jos" din Galați, 2007)
      The paper is based on study of steam reforming of renewable raw materials (bioethanol, biomethane) in stainless steel fixed bed reactor. The β-alumina catalysts with nickel has been synthesized and tested supported. The ...
    • Studies About Electrochemical Plating with Zinc-Nickel Alloys 

      Gutt, Gheorghe; Vasilache, Violeta; Poroch-Serițan, Maria; Vasilache, Traian (Universitatea "Dunărea de Jos" din Galați, 2007)
      The electrochemical deposition of zinc and combinations with elements of the 8th group of the Periodic System (nickel, cobalt, iron) have good properties for anticorrosive protection, compare with pure zinc. For steel ...
    • Structural and Tribological Aspects on Ti(C,O,N) Magnetron Reactive Sputtered Thin-Films 

      Munteanu, Daniel; Olteanu, Camelia; Ionescu, Cristian; Munteanu, Alexandru; Vaz, Filipe; Cunha, Luis (Universitatea "Dunărea de Jos" din Galați, 2007)
      Magnetron sputtering is a flexible technique and allows producing a significant amount of types of coatings. Within the frame of present work, Ti-C-O-N thin films were deposited onto high-speed steel (AISI M2), substrates ...
    • Severe Plastic Deformation an Advanced Method for Nanostructuring Shape Memory Alloys 

      Gurău, Gheorghe; Gurău, Carmela; Tănase, Dinel; Drugescu, Elena (Universitatea "Dunărea de Jos" din Galați, 2007)
      Severe plastic deformation (SPD) is an advanced plastic deformation. In this process nanostructuring metals and alloys may be produced. Nanostructured shape memory alloys are associate with a very high strength, toughness, ...
    • Some Results of Researches to Develop the Proper Recycling Methods of Technological Residues from Secondary Aluminum Industry 

      Roman, Maria; Teodorescu, Romanița; Firescu, Lucia; Crișan, Aurel; Mărginean, Ioan; Cocolaș, Adrian (Universitatea "Dunărea de Jos" din Galați, 2007)
      The objective of the research is to identify new suitable process to use residual waste (like aluminium secondary dross, salt slag or fly ashes) in concrete products according with sustainable industry concepts. The paper ...
    • Semi-Planetary Rolling and Changes of Fine Structure and Microstructure 

      Gheorghieș, C.; Cănănău, N.; Alexandru, P.; Petrea, I. (Universitatea "Dunărea de Jos" din Galați, 2007)
      The strain intensity in the proximity of planetary cylinder, in the case of semi-planetary rolling is greater than in the proximity of the massive cylinder. This fact leads at the variation of the microstructure and fine ...
    • 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 ...