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Afișează articolele 136-155 of 552
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Emphasizing the Toxicity of Heavy Metal ions on Plants: Monitoring with an Amino Acids Assay
(Universitatea "Dunărea de Jos" din Galați, 2014)In order to emphasize modifications on living organisms resulted from interaction with heavy metals, we applied a simple, sensitive, quick, inexpensive and reproducible method. It evaluates modifications through determining ... -
Energetic and Exergetic Efficiencies of Biomass Gasification Processes
(Universitatea "Dunărea de Jos" din Galaţi, 2012)A promising way to use biomass for the production of heat, electricity and other biofuels is through biomass gasification. In the gasification process, the chemical energy of the solid fuel is converted into the chemical ... -
Energy Consumption Assessment in the Water Treatment Process, Bacau City Case Study
(Universitatea "Dunărea de Jos" din Galați, 2017)In the national and international context, two general concerns revolve around water treatment processes. First of all, we talk about energy efficiency and environmental compatibility in the water treatment plants that ... -
Energy Disequilibrium Effects on Heat Treatment Equipment
(Universitate "Dunărea de Jos" din Galați, 2016)The differences found between heat fluxes in different areas of the heat treatment equipment workspace, due to energy disequilibrium or due to improper positioning of loading, can cause non-uniform temperatures and heat ... -
Environmental Risk Assessment for Thermal Power Plants
(Universitatea "Dunărea de Jos" din Galați, 2015)Thermal power plants still represent an important source of energy both in Romania and in Europe. Risks on the environment are primarily generated by the noxae generated from combustion of fossil fuels, namely: noxious ... -
Environmental Risks Assessment by Qualitative and Quantitative Methods
(Universitatea "Dunărea de Jos" din Galați, 2016)The paper presents qualitative and quantitative methods, applicable on environmental risks, and conditions of application. The principles of the two classes of risk assessment methods and the advantages and disadvantages ... -
Establishing of Rolling-Friction Coeffocient, for Hertzian Contacts Between Steel Balls and Different Kinds of Thermochemical Treated Steel Surfaces
(Universitatea "Dunărea de Jos"din Galați, 2005)It is known that for the ball displacement guide paths, the necessary startmoving force of the mobile half-couple is higher than the displacement-motion keeps force.Within the frame of this work, it has been designed and ... -
Establishing the Constitutive Law of a CrMo Alloyed Steel
(Univrsitatea "Dunărea de Jos" din Galați, 2009)The paper shows the results of the researches for establishing the equation of the deformation behavior of alloyed steel with chromium and molybdenum. The behavior law is established in the experimental way, using the ... -
Establishing the Rolling-Friction Coefficient for Different Contacts Between Balls and Termochemicallly Treated Steel Rolling Paths
(Universitatea "Dunărea de Jos" din Galați, 2014)Within the frame of this work, the influence of four very well-known and often used thermochemical treatments (carburizing, carbonitriding, nitriding and nitrocarburizing) of steel rolling paths applied on rolling-friction ... -
Estimation of the Metallurgical Industry Impact on the Environment
(Universitatea "Dunărea de Jos" din Galați, 2005)Objectively, the ecosystem in its development and working implies the accumulations on of some nonconcordances. Summing these disfunctions without taking into consideration their attenuation, may lead to producing, achieving ... -
Evaluated Work System and Environmental Risk for a Worker in Drilling for Methane Gas
(Universitatea "Dunarea de Jos" din Galați, 2015)Improving the safety and health at work is important not only in terms of human view, in order to reduce possibilities of accident to workers, but also as a way to ensure the success and durability work for a worker in ... -
Evaluation of the Occupational Risk Associated to Work Environment in Ferrous Metallurgy
(Universitatea "Dunărea de Jos" din Galați, 2013)Work environment present risk factors due to chemical pollution of ambient air with dust, smoke, fumes, vapors, mists and gases. Moreover physical risk factors (related to noise, lighting, temperature, vibration, humidity, ... -
Evaluation of the Sonic System Efficiency for Raw Water Treatment
(Universitatea "Dunărea de Jos' din Galaţi, 2012)Water pollution is defined as the change in the water composition that is harmful to human health, unsuitable for economic use or reactive and that can cause damage to the aquatic flora and fauna. In the appreciation of ... -
Evolution of Copper Microstructure Subjected to Equal Channel Angular Pressing
(Universitatea "Dunărea de Jos" din Galaţi, 2012)This paper aims to study bulk severe plastic deformation processes capable to produce ultrafine grain and also nanostructured 3D materials, interesting for processing in current industry. Samples of copper alloy were ... -
Evolution of some Structural Fine Parameter in the Superficial Layer During Low Cycle Fatigue Process
(Universitatea "Dunărea de Jos" din Galaţi, 2008)Using laminate samples, investigations have been realized at variable solicitation of pure bending on a patented machine. The machine has two working places and it can be adjusted for different deformations, frequencies ... -
Evolutionary Perspectives on Energy Consumption of Raw materials to Ensure Energy Production in the EU-28
(Universitatea 'Dunărea de Jos" din Galaţi, 2014)A clear analysis of the electricity production and consumption sector in the EU 28 offers firstly the possibility of knowing the final energy consumption for each segment (industry, households, trade, services and ... -
Examining the Evolution of Microstructure and ITS Effect on the Mechanical and Tribological Properties
(Universitatea "Dunărea de Jos" din Galați, 2017)This paper investigates the superior frictional performance of Ti-DLC films, by examining the evolution of microstructure and its effect on the mechanical and tribological properties. The superior frictional performance ... -
Experimental and Theoretical Investigations on Mode I Crack Propagation in Notches Under Cyclic Loading
(Universitatea "Dunărea de Jos" din Galați, 2007)Research works regarding crack opening stresses covering various types of Mode I cracks initiated and growing in notches under cyclic loading are shown. A large number of parameters influence the crack opening behavior, ... -
Experimental Aspects for CeO2 Nanoparticles Synthesis and Characterization
(Universitatea "Dunărea de Jos" din Galați, 2017)In recent years, cerium oxide (CeO2, or ceria) became a versatile nanostructured material because of its unique properties derived from the low dimensionality and high surface area. It was also extensively studied due ... -
Experimental Equation of Deformation Behaviour of a Concrete Steel
(Universitatea "Dunărea de Jos" din Galați, 2006)The plastic deformation behavior is defined by the function of the deformation strength according to the strain, strain rate and temperature as the factor of the deformation process. The behavior law establishes by the ...