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Afișează articolele 2637-2656 of 2993
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Superficial Hardening with Pulse Laser Applied to ASTM A537 HSLA Steel
(Universitatea "Dunărea de Jos" din Galaţi, 2014)The surface hardening with YAG:Nd pulse laser is used to obtain a set of surfaces with different properties and it is based on the formation of a very fine martensite. The paper has been elaborated based on laboratory ... -
Superior Valorisation of the Aluminium Scraps for Obtaining Complex Aluminium Master Alloys Used in Advanced Refining of the Steels
(Universitatea "Dunărea de Jos" din Galați, 2009)The research about aluminium scraps valorisation to obtain master alloys with reactive elements (Al, Mn, Si) used for special steels refining is presented in this paper. By this way the recycling of aluminium scraps leads ... -
Supervisory Control Technique for an Assembly Workstation as a Dynamic Discrete Event System
("Dunarea de Jos" University of Galati, 2001)This paper proposes a control problem statement in the framework of supervisory control technique for the assembly workstations. A desired behaviour of an assembly workstation is analysed. The behaviour of such a workstation ... -
Suprafete functionale Co / nano - ZrO2 obţinute prin electrodepunere pentru utilizarea în industrie şi biomedicina
(Universitatea "Dunărea de Jos" din Galaţi, 2012)În contextul pierderilor economice uriaşe pe plan mondial datorate degradării prin coroziune şi uzura a materialelor metalice, se caută permanent soluţiile cele mai avantajoase pentru modificarea suprafeţelor în scopul ... -
Suprafețe funcționale obținute prin metode electrochimice și caracterizarea acestora
(Universitatea "Dunărea de Jos" din Galaţi, 2018)Suprafețele funcționale au primit o atenție deosebită în ultimile decenii datorită nevoilor tot mai complexe și mai diversificate ale oamenilor, cât și a nevoilor de a obține materiale cu proprietăți îmbunătățite indiferent ... -
Suprafețe funcționale obținute prin metode electrochimice și caracterizarea acestora
(Universitatea "Dunărea de Jos" din Galați, 2018)Suprafețele funcționale au primit o atenție deosebită în ultimile decenii datorită nevoilor tot mai complexe și mai diversificate ale oamenilor, cât și a nevoilor de a obține materiale cu proprietăți îmbunătățite indiferent ... -
Surface Hardening by Nitration for Some Stainless Austenite Steel Types
(Universitatea "Dunărea de Jos" din Galați, 2006)Stainless austenite steel types have a good resistance to corrosion in different natural, industrial environments but their hardness and mechanical resistance are low enough. In order to assure an increased resistance ... -
Surface hardening for Low Carbon Steel (A3k) by Yag: Nd Pulse Laser Thermal Activation
(Universitatea "Dunărea de Jos" din Galați, 2008)The paper is based on experiments for surface hardening on A3k (low carbon steel) samples using YAG:Nd pulse laser. A small x-y moving system conducted by PC was made for sample scanning, relative to fixed focused laser ... -
Surface Hardening of 40Cr10 steel After Short Time Nitriding in Fluidized Bed
(Universitatea "Dunărea de Jos" din Galați, 2006)The paper is based by nitriding in fluidized bed experiments over laboratory plant. Fluidization applications are characterized by high values of mass and heat transfer coefficients. For experiments were used 40Cr10 ... -
Surface Hardening Over 38MoCrA109 Steel by Yag:Nd Pulse Laser
(Universitatea "Dunărea de Jos" din Galați, 2008)Laser offers unique capabilities for high energy concentrations at small surfaces. Factors that have influences over interactions between laser beam and steel surfaces have very high control. Pulse laser YAG:Nd is usually ... -
Surface Hardenining for 38MoCrA109 Steel Using Fluidized Bed Nitriding
(Universitatea "Dunărea de Jos" din Galaţi, 2008)The paper is based an nitriding experiments made in a fluidized bed laboratory furnace. Fluidization was obtained in a steel refractory retort by solid granular (burned fire clay) and fluid (mixture of ammonia and ... -
Surface Roughness Parameters Evaluation in Rolling/Sliding Wear TestsS
(UDJG, 2011)Rolling/sliding wear tests were performed on an Amsler test rig. Normal load (expressed as the Hertzian pressure) and the roll-slide ratio have been considered to have the most important influence in simulating gear ... -
Surface Roughness Parameters Evolution Under Fatigue Loading
(UDJG, 2010)The main objective of this paper is to demonstrate that in order to have a complete characterisation of fatigue degradation it is necessary to analyze the evolution of surfaces roughness, which can become a stress ... -
Surface Tension of Liquid Copper in Dilute Oxygen Concentrations
(Universitatea "Dunărea de Jos" din Galați, 2006)The studies of this paper regarding the influence of low oxygen contents on the liquid copper surface tension had as base „sessile drop” method and the determination of the oxygen content using calculation ratio where ... -
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 ... -
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A Survey on Image Processing Techniques in the Context of Content Based Image Retrieval
("Dunarea de Jos" University of Galati, 2013)This paper presents an overview of the current image processing techniques used to solve various problems, especially in the field of image indexing/retrieval. We aim to provide a solid, comprehensive reference source for ... -
A Survey Text Clustering Techniques Used for Web Mining
("Dunarea de Jos" of Galati, 2005)This paper contains an overview of basic formulations and approaches to clustering. Then it presents two important clustering paradigms: a bottom-up agglomerative technique, which collects similar documents into larger and ... -
Sustainable Development Focused on Reducing Regional Inequalities. Romania Progression as Emergent Economy
(“Dunarea de Jos” University of Galati, 2014)Decrease of regional disparities is one of the main goal for every single or mixed economy, such as national regions within Europe or European Union as a whole. Disparities occurrence are differently set up from one ...
