Căutare 1993 -2018 după Titlu
Afișează articolele 104-123 of 552
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Ecotechnologies-A Major Route for Durable-Sustainable Development in the Metal Materials Industry
(Universitatea "Dunărea de Jos' din Galați, 2016)The paper shows that the durable and sustainable development depends on the quality of the events occurring in the convergence area between the natural ecological system (N.E.S.) and the technological system (T.S.) ... -
EDX Analysis of Laser Cladding Layers with Ni-Cr-B-Fe-Al Alloy
(Universitatea "Dunărea de Jos" din Galați, 2009)Multilayer cladding by injection of powder with 8.9% Cr, 4.5% Fe, 5.1% B, 2.4% Al, 0.6% Cu, Ni rest as chemical composition, in melted bath by a continuous wave CO2laser connected to x-y-z coordinate table was tested in ... -
Effect of an a Oxy-SulPhide Inoculant Enhancer on Graphite Parameters in the Mould Inoculated Compacted Graphite Cast Iron
(Universitatea "Dunărea de Jos" din Galaţi, 2014)In compacted/vermicular graphite cast iron production, inoculation is applied to limit the formation of carbides, but usually this treatment also promotes nodular graphite with improved nodularity. The main objective 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 ... -
Effect of Heavy Metals on the Germination of Wheat Seeds : Enzymatic Assay
(2016)Stress caused by heavy metals is a major problem which affects agricultural productivity and, implicitly, human health. Natural flora presents differences of tolerance to heavy metals. Some plants grow well in a soil ... -
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 Oxidation on Spectrophotometric and Rheological Parameters of Corn Oil
(Universitatea "Dunărea de Jos" din Galați, 2013)The aim of this study is the viscosity’s evolution depending on the temperature and the shear rate and the analysis of the transmittance spectra of the oxidized corn oil. Corn oil was oxidized of the temperatures of ... -
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 ... -
Effect of ZnO Nanoparticles on the Anticorrosion Properties of Epoxy Coating
(Universitatea "Dunărea de Jos" din Galați, 2014)Homogeneous epoxy coating obtained by embedding ZnO nanoparticles (≤50 nm) in the epoxy matrix, was applied on Grade A naval steel substrates by dipcoating method. The morphology and microstructure of the coatings ... -
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 ... -
Effective Electromechanical Coupling for the Partially Electroded Ceramic Resonators of Different Geometries
(Universitatea "Dunărea de Jos" din Galați, 2015)Effective electromechanical coupling factor (ECF) was studied on bar, disc and ring ceramic resonators partially covered by electrodes. ECFs were calculated theoretically and verified experimentally. Bar resonators ... -
Effects Exerted by Slag Carried over from Converter in the Ladle on the Aluminum Assimilation
(Universitatea "Dunărea de Jos" din Galați, 2014)In the present paper are shown aspects of the influence exerted by the some less controlled parameters of BOF steelmaking, mainly of slag characteristics at tapping. Following the necessities to control the steel ... -
Effects of Plastic Deformation and Temperature on Microstructural and Mechanical Properties of a CuAlNi Shape Memory Alloy
(Universitatea "Dunărea de Jos" din Galați, 2009)In Cu 12.88% wt.Al4 %wt. Ni shape memory alloy the influence of plastic deformation and thermal treatments on the microstructures and hardness were studied by optical microscopy, scanning electron microscopy (SEM), ... -
Effects of Thermophysical and Mechanical Properties of the Substrate on the Normal Adhesion of Ni-Cr-Fe Coatings Deposited by Thermal Spray
(Universitaea "Dunărea de Jos" din Galați, 2013)Thermal spray process is used to obtain high quality coatings that improve corrosion resistance, mechanical and tribological properties, in various technical applications: auto parts, turbine elements, in the naval ... -
Elastic Modulus of Coatings by Pendulum Impact Test
(Universitatea "Dunărea de Jos" din Galați, 2014)The pendulum impact scratch device with high precision system in measuring normal and tangential forces during scratching has been used to study elastic modulus of coatings. The criterion for evaluation of elastic modulus ... -
Elastoplastic Model for the Steel Bars Under Thermal Treatments
(Universitatea "Dunarea de Jos" din Galați, 2005)In order to understand material behavior, during the stresses action produced by thermal effects of volume, was started from Hooke relations, whereat was added the expressions that take into account these effects. Have ... -
Electric and Electromagnetic Properties of Fiber Fabric Based Filled Epoxy Composites
(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 ... -
Electrical Properties Characterization of Vinyl ester Resin Filled with carbon Nanotubes
(Universitatea "Dunărea de Jos" din Galați, 2015)In this paper the authors have done a characterization of the electrical properties of vinyl ester based nanocomposites containing different percentages of carbon nanomaterials The carbon fillers used in this study were ... -
Electrical Properties of Ultra-Sonicated Epoxy Resin
(Universitatea "Dunărea de Jos" din Galați, 2015)As ultra-sonication is a mostly used method to disperse the particles into the polymer matrix, the aim of this study is to point out the effect of epoxy’s exposure to ultra-sounds over the electrical properties, especially ... -
Electrochemical Behavior of Zinc Layers Passivated in Phosphate Solutions
(Universitatea "Dunărea de Jos" din Galaţi, 2012)Phosphate conversion coatings are used on the galvanized steel. By forming a thin protective film on the surface of the steels this treatment enhances corrosion resistance. This paper presents studies on phosphate ...