Căutare 1993 -2018 după Data publicării
Afișează articolele 461-480 of 552
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The Influence of the Steel's Surface Quality on the Electroless Ni-P Coatings
(Universitatea "Dunărea de Jos" din Galaţi, 2015)The method of autocatalytic reduction coating assures a precise reproduction of the coated surface. This is an advantage when the support surface has a complex geometry but also becomes a disadvantage because it requires ... -
Research on the Corrosion Resistance, in Saline Solution, of Steel Sheets for Industrial Construction, by Gravimetric Method
(Universitatea "Dunărea de Jos' din Galați, 2015)In this paper, it was presented a study on corrosion in saline medium, by gravimetric method, of the steel sheets for industrial construction. The corrosion rate was estimated by gravimetric method and evaluate based on ... -
Corrosion Behaviour and Biocompatibility of 316 Stainless Steel as Biomaterial in Physiological Environment
(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 ... -
Surfasce Roughness and Topography of Ni/Micro-Sic Layers: Influence of Current Density on Electrodeposition Process
(Universitatea "Dunărea de Jos" din Galați, 2015)The surface properties are directly responsible for the performance of engineering materials because most of failures such as friction, wear, corrosion and fatigue often take place on the material surface. Electrodeposition ... -
Treatment of Ammonia Wastewater by Ultrasound. Part I: The Influence of the Ultrasound energy on the ultrasound Bath Temperature
(Universitatea "Dunărea de Jos" din Galați, 2015)The industrial ammonia water decontamination depending on the sample temperature is monitored by this study. The treatment was conducted by the UP100S ultrasound generator (Hielscher Ultrasound Technology, Germany), operating ... -
Laser Deposition of Bronze Aluminum on Steel Support
(Universitatea "Dunărea de Jos" din Galați, 2015)In order to rise the wear and corrosion resistance of 0.45% C superficial steel layers, a multilayer coating was tested by injection of powder with 88.3% Cu; 9.5% Al; 2.2% Fe in melted bath by CO2 continuous wave laser. ... -
Optimization of Thermal Processing Parameters of a High Strength Aluminum Alloy
(Universitatea "Dunărea de Jos" din Galați, 2015)The work shows a calculation meant to optimize the thermal processing parameters (time and temperature) of a high strength aluminum alloy. The optimization calculation has been done by gradient method which involves ... -
Urban Pollution Issues Generated by Trams Traffic
(Universitatea "Dunărea de Jos" din Galați, 2015)The modern society development involves new and diverse issues considering urban environmental pollution. Traffic generated sound and vibration are two upto- date urban environmental pollution causes besides air and water ... -
The influence of the physical-Chemical Factors on the Distribution of Heavy Metals in the Delta Ecosystems
(Universitatea "Dunărea de Jos" din Galați, 2015)Recognized to the influence of micropollutants, heavy metals represented on the ecological status of surface waters, including delta ecosystems, the paper aims to study the impact of environmental factors (temperature, ... -
Microstructural Characterization of the TiMoZrTa Alloy
(Universitatea "Dunărea de Jos" din Galați, 2015)In recent years, different types of titanium alloys have been investigated with the aim of using materials in biomaterials field, and Ti-Mo system alloys are very promising materials. Alloying titanium with biocompatible ... -
Deposition Technologies for Obtaining thin Films with Special Properties
(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 ... -
Use of Alternative Fuels in Road Transport and its Environmental Effects. A Literature Review
(Universitatea "Dunărea de Jos" din Galați, 2015)This paper presents a literature review on use of alternative fuels in road transport, in respect of their performance and emission in diesel engines/vehicles. The major limitations of vegetable oils as fuel in diesel ... -
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 ... -
Detailed Microcontroller Architecture Based on a Hardware Scheduler Engine and independent Pipeline Registers
(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 ... -
Conductive-Atomic Force Microscopy Investigation of the Electrical Properties of Low Temperature Deposed ZnO Transparent thin Films
(Universitatea "Dunărea de Jos" din Galați, 2015)The paper presents the investigation by conductive-atomic force microscopy (C-AFM) of the variation of the local conductivity and topography of the transparent ZnO thin films deposed onto soda lima glass substrates by ... -
Determination of Glass Transition Temperature for Polyester/Graphene Oxide and Polyester/Graphite Composite by TMA and DSC
(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 ... -
Selective Recovery by solubilization of Metals Ions of Chromium, Iron and Zinc from Electroplating Sludge to Develop Pigments for Ceramics Industry
(Universitatea 'Dunărea de Jos" din Galați, 2015)Electroplating industries discharge large amounts of heavy metals, including chromium (Cr), iron (Fe) and zinc (Zn) ions, in the wastewater resulted from technological processes, as well as in the sludge from wastewater ... -
The Electromagnetic Proprieties of Hybrid Composites
(Universitatea "Dunărea de Jos" din Galați, 2015)This research investigates the electromagnetic behaviour of hybrid composites with heterogeneous epoxy matrix. The hybrid composites were formed by the wet lay-up method and were made of three types of simple plain fabrics ... -
Applications Based on Variabile Frequency Rotating Magnetic Field Electromechanical Agitator With Dual Direction
(Universitatea "Dunărea de Jos" din Galați, 2015)This paper presents a series of experimental results obtained by studying the specific effects and phenomena of the rotating magnetic field. During the research, an interesting phenomenon, specific to the variable frequency ... -
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 ...