Căutare 1993 -2018 după Titlu
Afișează articolele 304-323 of 552
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Oxidizing Influence Over Surface Structures and Properties for A3k Steel Nitrocarburized in Fluidized Bed
(Universitatea 'Dunărea de Jos" din Galați, 2006)Surface duplex thermochemical treatment (oxinitrocarburizing) has principal scope to obtaining superficial mechanical higher properties with increasing corrosion capacity. The paper is based by oxinitrocarburizing ... -
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 ... -
Particularities of the Management System for Phone Mobile Waste in Romania
(Universitatea "dunărea de Jos" din Galați, 2014)The main objective of this paper is to characterize the management system for mobile phones in Romania. The dimension of cell phone waste flow and the problems related to the collecting and recycling of this waste were ... -
Performance Management System for purifyng Polluted Industrial Water
(Universitatea "Dunărea de Jos" din Galaţi, 2012)In this paper we show an integrate system of water management and an efficient solution that is a floating dock, placed in the harbour area. Water quality is one of the most important elements for life support and ... -
Performing System for Purifing Waste Water
(Universitatea "Dunărea de Jos" din Galați, 2010)Status of water pollution can be controlled and reduced. For this purpose it uses two types of processes, applied more or less consistently by the management and technical design. The first group of processes is characterized ... -
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, ... -
Photocatalytical Activities of Manganese Doped Zinc Oxide Nanoparticles prepared by Sol-gel Method
(Universitatea "Dunărea de Jos" din Galați, 2013)In the last period, ZnO and doped ZnO nanoparticles are intensively investigated for their photocatalytic properties. This paper reports on ZnO and Mndoped ZnO nanoparticles obtained by modified sol-gel method. Were ... -
Physical-Chemical Properties (Cu-Sn) -Mo Composite Materials
(Universitatea "Dunărea de Jos" din Galați, 2009)The article is devoted to the study of corrosive and thermal stability of materials composition on the basis of copper, obtained by the EB-PVD method. It is shown in this work that corrosion of (Cu-Sn)–Mo composites have ... -
Physical-Mechanical and Technological Characteristics of Ti10Zr Alloy for Dental Applications
(Universitatea "Dunărea de Jos" din Galați, 2016)Progress reported over time in dentistry can be attributed largely to the dynamics of acquiring new materials. A biomaterial is considered ideal in the absence of any biomaterial-tissue interaction, which means a biomaterial ... -
Physico-Chemical Water Treated with Sonic Generatir and Al2(SO4) Coagulant
(Universitatea "Dunărea de Jos" din Galaţi, 2012)This paper is a study on the problem of using ultrasound in the treatment of raw water. It highlights the effect of ultrasounds produced by the experimental sonic ultrasound generator through the physico-chemical analysis ... -
Physico-Mechanical Characteristics of Hard Alloys Made Out of Many Carbides
(Universitatea "Dunărea de Jos" din Galați, 2005)The Hard alloys of type WC-TiC-Co can be used to process materials with long chips, such as steels [1]. Titanium carbide or TiC-WC solid solutions, added as alloying constituents in the compositions of WC-Co pseudo-alloys ... -
Policies for Economic Efficiency. Providing utilities in Public Administration
(Universitatea "Dunărea de Jos" din Galaţi, 2014)The reality of the contemporary world has shown that there is an increasing interdependent power often turned into political pressure. Today, in Europe 25% of the imports of natural gas come from Russia. Therefore, ... -
Pollutant Emissions, Control and Prevention in the Secondary Copper Industry
(Universitatea "Dunărea de Jos" din Galaţi, 2008)This paper presents an analysis of pollutant emissions specifics to copper waste valorization. There are made appreciations of the role and importance which have the characteristics of mixed charge with waste having a ... -
Possibilities to Evaluate the Value of the Marangoni Effect and of the Marangoni number in Refining Steel-Slag/Inclusion Systems
(Universitatea "Dunărea de Jos" din Galați, 2006)Starting from the impressive progress in studying the instabilities induced by capillary effects in systems of two immiscible fluids in chemistry, an analysis of factors in solutal Marangoni effect and Marangoni number ... -
Possibilities to Study the Mixing State and Energy Dissipation in Metallurgical Reactors Using a System Based on Coloured Liquids
(Universitatea "Dunărea de Jos" din Galați, 2005) -
Prediction of Buckling and Postbuckling Behaviour of Composite Ship Panels
(Universitatea "Dunărea de Jos" din Galați, 2007)The behavior of ship plating normally depends on a variety of influential factors, namely geometric/material properties, loading characteristics, initial imperfections, boundary conditions and deterioration arising from ... -
Prediction of Work Parameters in a Five Stand Cold Mill
(Universitatea "Dunărea de Jos" din Galați, 2006)The accurate prediction of work parameters is essential for a quality product. A mathematical model is used for parameters calculus. It is important to directly predict the roll force and the other parameters and to ... -
Preliminary Investigations Concerning Monitoring of Water Pollution Level
(Universitatea "Dunărea de Jos" din Galați, 2009)The aim of this paper is to develop an effective tool based on artificial intelligence techniques for monitoring and characterization of surface waters. Monitoring of the pollution in the aquatic environment consists in ... -
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 ... -
Preparation and Characterization of Tin Oxide thin Films
(Universitatea "Dunărea de Jos" din Galați, 2013)Tin oxide (SnO) thin films were prepared onto glass substrates by thermal evaporation under vacuum. The substrate temperature was kept constant at 300 K during the film growth. The structural studies using transmission ...
