Căutare 1993 -2018 după Titlu

Afișează articolele 84-103 of 552

    • Corrosion Behavior of Some Materials in 0.5 M Ammonium hydroxide Solution 

      Istrate, Gina; Potecașu, Florentina; Bașliu, Vasile (Universitatea "Dunărea de Jos" din Galați, 2013)
      The present work has the purpose of studying metallographic aspects and corrosion resistance of three materials used in ammonia stripping plants. The corrosion process was evaluated by gravimetric tests and potentiodynamic ...

    • Corrosion Behavior of Zinc Alloy Layers 

      Radu, Tamara; Ciocan, Anisoara; Istrate, Gina Genoveva (Universitatea "Dunărea de Jos" din Galați, 2014)
      The alloying of zinc with some additional elements in specific quantities could be reliably used in the hot-dip coating process. These elements conferr substantially improved performance to the end-product specially by ...

    • Corrosion Behaviour and Biocompatibility of 316 Stainless Steel as Biomaterial in Physiological Environment 

      Toderașcu, Georgeta; Dumitrașcu, Valentin; Benea, Lidia; Chiriac, Alexandru (Universitatea "Dunărea de Jos" din Galați, 2015)
      Although stainless steel is a material widely used for biomedical applications, its surface properties for long term application are still a serious concern. 316L stainless steel (SS 316L) is a material commonly used in ...

    • Corrosion Behaviour of Tombac Used in Cult Objects Manufacturing 

      Hagioglu, P.; Gheorghieș, c.; Cantaragiu, A.M.; Boiciuc, R.; Țigău, N. (Universitatea "Dunărea de Jos" din Galați, 2009)
      Corrosion of metals and metallic alloys is due to their thermodynamic instability in relation to their oxidation form. Corrosion tests performed in this work simulate the exposure conditions in different environments of ...

    • Corrosion of Bronze Art Objects and Methods of Restoration 

      Croitoru, Gheorghe; Rusu, Ion (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper presents a study of the corrosive state of sculptures and art objects made from copper and bronze, the equipment used to detect and study defects and the methods and solutions for restoring the art object ...

    • Corrosion of Composite Ferro-Niobium Layers in Cobalt Matrix 

      Balint, Lucica; Radu, Tamara; Balint, Simion Ioan (Universitatea "Dunărea de Jos" din Galaţi, 2012)
      The ferro-niobium composite layers in cobalt matrix were obtained by cathode depositing from electrolyte solutions on steel base. The electrolyte included in its composition cobalt sulphate and cobalt chloride, boric ...

    • Corrosion Resistance of the Composition Materials System (Cu-Al)-Mo, Obtained by the EB-PVD Method 

      Grechanyuk, V.; Artyuh, Y. (Universitatea "Dunărea de Jos" din Galați, 2005)
      For development of new composition materials for the electric contacts, which would differ by high electric conductivity, mechanical properties, corrosive and erosion resistance in conditions of high temperature’s ...

    • Corrosion Resistance of Zinc Coated Steel in sea Water Environment 

      Diaconu, Adrian; Solomon, Cătălin; Benea, Lidia; Dumitrașcu, Valentin; Mardare, Laurențiu (Universitatea "Dunărea de Jos din Galați, 2015)
      The life time of metallic materials used in naval transport industry is influenced by their corrosion resistance. For utilization in shipbuilding and offshore construction, metallic materials need to be covered with ...

    • Critical Analysis of "Maximum Stress Failure" 

      Fuiorea, Ion; Stănică, Dumitrița (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper deals with critical considerations upon different points of view that were enounced by some authors referring to Maximum Stress Failure Criterion for composite materials. The considerations stem both from a ...

    • Decorative composite Layers 

      Mitoșeriu, Olga; Potecașu, Florentina; Drugescu, Elena; Vlad, Maria (Universitatea "Dunărea de Jos" din Galați, 2008)
      Part of the materials used in the chemical industry, metallurgical, machine construction, can be coated, as with time it occurs either a decrease of its properties, or even a process of advanced faulting, because of the ...

    • Deposition Technologies for Obtaining thin Films with Special Properties 

      Țugui, Cătălin-Andrei; Vizireanu, Petrică; Nejneru, Carmen; Perju, Manuela-Cristina; Axinte, Mihai; Bălțatu, Simona-Mădălina (Universitatea "Dunărea de Jos" din Galați, 2015)
      The properties of metallic materials can be improved by deposition of materials. The coating has a tear strength and better hydro-abrasive corrosion. The thin layer deposition has a thickness of less than 10 micrometers. When ...

    • Design and Flow Modelling of Ballast Tank in-Line Ejector 

      Dumitrache, Constantin; Comandar, Corneliu; Hnatiuc, Bogdan (Universitatea "Dunărea de Jos" din Galați, 2016)
      The purpose of this paper is to present the stages of designing a water in-line ejector used for ballast tanks stripping operation. The design operation was performed using NX Siemens CAD and ANSYS 15 for computer fluid ...

    • Design of a New Type of Gas-Dynamic Disruptor Used to Neutralize Improvised Explosive Devices 

      Bălan, Vasile; Bordei, Marian (Universitatea "Dunărea de Jos' din Galați, 2016)
      The paper presents a type of recoilless disruptor developed according to the studies of two disruptors performance and shortcomings currently used DR2 and RICHMOND, respectively. In creating the new disruptor, there were ...

    • Detailed Microcontroller Architecture Based on a Hardware Scheduler Engine and independent Pipeline Registers 

      Andrieș, Lucian; Găitan, Gheorghița (Universitatea "Dunărea de Jos" din Galați, 2015)
      In the world of real time operating systems, task switching, communication between threads and synchronization are implemented in software. Some of the mechanisms used may introduce big latencies in task recurrence, task ...

    • Determination of Glass Transition Temperature for Polyester/Graphene Oxide and Polyester/Graphite Composite by TMA and DSC 

      Baștiurea, M.; Baștiurea, M. S.; Andrei, G.; Murarescu, M.; Dumitru, D. (Universitatea "Dunărea de Jos" din Galați, 2015)
      The influences of oxide grapheme and grapheme in thermosetting polymer composites are complex and they very much depend on the chemical bonds formed between the additives and the polymer matrix. This study has used ...

    • Development of Blade Design for Small Hawt Adapted for Lower Values of Wind Speed 

      Badea, Nicolae; Cazacu, Nelu (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper aims at studing, theoretically and experimentally, the influence of turbines blade profile on output power, in order to decrease effective domain to smaller wind speed, specific to Galati area. Studies have ...

    • Dimensional Changes in Some Iron-Based Powder Metallurgy Alloys 

      Marin, Mihaela; Potecașu, Florentina; Potecașu, Octavian (Universitatea "Dunărea de Jos" din Galați, 2015)
      The purpose of this paper is to present the dimensional changes in some ironbased (P/M) alloys. The specimens produced from atomized iron powder and alloyed powder with different sizes (< 45, 45-63, 63-100, 100-150, >150 ...

    • Dual Priority Scheduling Algorithm Used in the nMPRA Microcontrollers-Dynamic Scheduler 

      Andrieș, Lucian; Găitan, Vasile Gheorghiță (Universitatea "Dunărea de Jos" din Galați, 2015)
      This paper is a follow up of an already published paper that described the static scheduler. It deals with a true dynamic scheduling algorithm that is meant to maximize the CPU utilization. The dual priority algorithm ...

    • Dust Emissions from an Integrated Steel Mill in Correlation with Human Exposure and their Adverse Health Effects 

      Ciocan, Anișoara; Radu, Tamara (Universitatea "Dunăreade Jos" din Galați, 2013)
      Many of the metallurgical operations contribute to generation of the dust emissions if these are not properly controlled and managed. The relevant sectors as important sources for airborne dust are: coke oven plant, ...

    • Dynamics of Nutrients in Aquatic Ecosystems: The Case Study of Ciric Basin River at Nord of Iași City 

      Tofan, Lavinia; Wenkert, Rodica; Păduraru, Carmen; Toma, Ovidiu (Universitatea "Dunărea de Jos" din Galați, 2014)
      A 1 year dynamics of two biologically limiting nutrients (N and P) has been carried out in the Ciric basin river at nord of Iasi City. The total nitrogen concentrations varied from 7.55-17.55 mg N/L and total phosphorus ...