Căutare 1993 -2018 după Data publicării
Afișează articolele 341-360 of 552
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Effect of Single-Wall Carbon Nanotubes on Thermal Properties of Polyester Composites
(Universitatea "Dunărea de Jos" din Galați, 2013)This paper presents the effect of different contents of single-wall carbon nanotubes (SWCNT) on the specific heat and coefficient of thermal expansion of polyester composites. By adding small content of SWCNT in the ... -
Properties and Applications of Nanocellulose Polymer Composites. A Short Review
(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 ... -
Photocatalytic Properties of Semiconductive Oxide Nanoparticles. From Fundamentals to Applications
(Universitatea "Dunărea de Jos" din Galați, 2013)Photocatalysis is a promising technology that demonstrated important applications in environmental systems such as air purification, pollution removal, self-cleaning and antimicrobial. Semiconductive oxides (e.g., ZnO, ... -
High-Dielectric Inorganic-Organic Hybrid thin Films for fie;ld Effect Transistors (FETFT)
(Universitatea "Dunărea de Jos" din Galați, 2013)The paper discusses the challenges to develop thin films transistors for flexible transparent electronics, displays etc. The sol-gel preparation of hybrid thin films based on dielectric oxides nanoparticles (SiO2 NPs, ... -
Effect of ZrO2 Nanoparticles on the Mechanical and Anticorrosion Properties of epoxy Coating
(Universitatea "Dunărea de Jos" din Galați, 2013)Homogeneous epoxy coatings containing ZrO2 nanoparticles were applied on Grade A naval steel substrates. The morphology of the coating was characterized by optical microscopy and scanning electron microscopy. The effect ... -
Fabrication and Characterization of Cobalt/Iron Composite Coatings
(Universitatea "Dunărea de Jos" din Galați, 2013)Cobalt/iron composite coatings are used in micro-equipments due to their high magnetic saturation values and Curie temperatures, as magnetic nanoparticles capable of killing cancer cells, for magnetic data storage and ... -
Electrochemical modifications of Titanium and Titanium Alloys Surface for biomedical Applications - A review
(Universitatea 'Dunărea de Jos" din Galați, 2013)The field of biomaterials requires the input of knowledge from very different areas such as biology, medicine and engineering so that the implanted material in a living body to not induce any adverse impacts. The paper ... -
Dust Emissions from an Integrated Steel Mill in Correlation with Human Exposure and their Adverse Health Effects
(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, ... -
Particular Aspects Concerning Instability at Interface LCAK Steel SLAG (CaO-Al2O3) Due to Transfer of Sulphur, Evaluated Using the Model Reichenbach-Linde Adapteda
(Universitatea "Dunărea de Jos" din Galați, 2013)Based on the model of Reichembach and Linde, adapted to the interface in the system LCAK steel-(CaO-Al2O3) slag at temperature 1873.15K, it is shown that transfer of sulphur from steel to slag could promote interfacial ... -
Effect of Mean Diameter Size of Disperse Phase on Morphology and Corrosion Resistance of Phenol-Formaldehhyde Resin/Zn Coatings
(Universitatea "Dunărea de Jos" din Galați, 2013)The present work has the purpose of obtaining composite coatings using phenol – formaldehyde (PF) resin electrodeposited with zinc. The phenol – formaldehyde resin/Zn coatings were electrodeposited from a suspension of ... -
Effect of Current Density on Morphology and Corrosion Resistance of Epoxy Resin/Zn Layers
(Universitatea "Dunărea de Jos" din Galați, 2013)In this research we intended to obtain and characteriz composite layers by using epoxy resin (disperse phase) electrodeposited with zinc (metal matrix). The epoxy resin/Zn layers were electrodeposited at two values of ... -
Measures to Optimize Job Security "Crane machinists who Transport Liquid Steel"
(Universitatea "dunărea de Jos" din Galați, 2013)The starting point in optimizing the prevention of occupational accidents and occupational diseases for a crane machinist for the transport of liquid steel is the risk assessment of the system. Risk assessment involves ... -
Research Regarding Work safety in the Loading Zone Furnace
(Universitatea "Dunărea de Jos" din Galați, 2013)The loading zone furnace is the place where we find work belt conveyors, vibrating screens and feeders, 5-ton hoist, cyclone, scale hoppers, troughs for routing and carriage of waste materials. The work consists in ... -
Composite Based on AIMg Alloys Obtained by Gas Insufflation
(Universitatea "Dunărea de Jos" din Galați, 2013)Composite materials are the most advanced class of materials invented and produced by humans in modern times as well as a challenge for the future in the field of scientific and technological performance. They are made ... -
Static Ananysis of the Structure Type Tank Thermally
(Universitatea "Dunărea de Jos" din Galați, 2013)This paper consider finite element analysis for structural analysis of a tank under thermal loadings. Geometric modeling is done in CATIA and for finite element analysis the author used FEA module in Catia. The aim is ... -
Premises in the Design of Computational Algorithms for Refining Slags Appied in Ladle Treatment of steels. Influence of Bof Slag and of Other Sources of Slag
(Universitatea "Dunărea de Jos" din Galați, 2013)In the design of computational algorithms for refining slags for ladle treatment of steels, the evaluation of contributions of different factors is a definitory step, allowing to evaluate the real posibilities and ... -
Corrosion Behavior of Some Materials in 0.5 M Ammonium hydroxide Solution
(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 ... -
Structure Characterization of Ca/Ba, Ca-FeSi Inoculated, Low Sulphur, Electrically Melted, thin Wall Grey Iron Castings
(Universitatea "Dunărea de Jos" din Galaţi, 2013)Much of the base iron in grey iron foundries is electrically melted in an acid lined induction furnace. The performance of the induction furnace allows superheating above 1500 oC, which is appropriate for thin wall casting ... -
Influence of Substrate Temperature on Structural and Morphological Properties of SnO2 Nanostructured thin Films
(Universitatea "Dunărea de Jos" din Galaţi, 2013)SnO2 nanostructures thin films with thickness of 500 nm were prepared by electron beam-physical vapor deposition on glass substrate at temperature of 300, 373, 443, and 583 K. Structural and morphological properties of ... -
The Management of Work Risk for a Plate Rolling mill Machine
(Universitatea "Dunărea de Jos" din Galați, 2013)Arcelor Mittal is the leader on important iron and steel global markets. This company has a performant system for research, for iron and steel plate production and has a top network for distribution, too. The company ...