Căutare 2014 fascicula9 nr3 după Data publicării
Afișează articolele 1-12 of 12
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Dynamics of Nutrients in Aquatic Ecosystems: The Case Study of Ciric Basin River at Nord of Iași City
(Universitatea "Dunărea de Jos" din Galați, 2014)A 1 year dynamics of two biologically limiting nutrients (N and P) has been carried out in the Ciric basin river at nord of Iasi City. The total nitrogen concentrations varied from 7.55-17.55 mg N/L and total phosphorus ... -
Comparative Characteristics of Martensite and Bainite in Cu-Based SMAs
(Universitatea "Dunărea de Jos" din Galați, 2014)The present work reports the evolution of micro-structure and shape memory behavior in a Cu-15 Zn-6 Al (mass. %) shape memory alloy (SMA), as a function of the applied hot working procedure and of the performed heat ... -
Structural Changes Associated with the Pseudoelastic Response of Fe-based Shape Memory Alloys
(Universitatea "Dunărea de Jos" din Galați, 2014)The pseudoelastic responses of two types of iron base shape memory alloys (SMAs) were introduced and discussed. The former was based on Fe-Mn-Si system, obtained by classical (CM) and by powder metallurgy (PM) manufacturing. ... -
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 ... -
Challenges in Corrosion Protection using Vegetable Extracts as Inhibitors-Electrochemical Studies
(Universitatea "Dunărea de Jos" din Galați, 2014)Corrosion is an irreversible chemical or electrochemical reaction of a material with its surrounding environment or medium which results in consumption of the material or in dissolution into the material of a component ... -
Research on the Influence of the Complementary Phase Percentange on the Properties of Copper-Based Composites
(Universitatea "Dunărea de Jos" din Galaţi, 2014)The article presents the method to obtain copper matrix composite with Cu- Al-Fe alloy particles as complementary phase. The samples were obtained by powder metallurgy methods using different percentages of complementary ... -
Research Regarding the Wear Level for a new Constructive Solution of a Cutting Tool
(Universitatea "Dunărea de Jos" din Galați, 2014)The paper presents a study of wear made to implement a constructive solution for a new cutting tool. The design of the cutting tool can be checked from a functional perspective, as well as reliability during the cutting ... -
Correlation Between the Properties of Old Slags and the Recycling Solutions
(Universitatea "Dunărea de Jos" din Galaţi, 2014)The blast furnace and basic oxygen furnace route of steel making (from iron ores and coke to steel) or the so called integrated steel production generates simultaneously solid waste products. The slag is predominant, ... -
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 ... -
Antimicrobial Activity of Ag:Zno/Chitosan Composites
(Universitatea "Dunărea de Jos" din Galați, 2014)This paper deals with Ag, ZnO and Ag-doped ZnO nanoparticles embedded in chitosan (CS) matrix, prepared by hydrolysis of zinc acetate in isopropanol in the presence of lithium hydroxide (LiOH) in low temperature ... -
The Evolution of the Characteristics of Mechanical Resistance for the Nitro-Carburized Treated Steel, After Thermo-Magnetic Treatment
(Universitatea Dunărea de Jos" din Galaţi, 2014)The aim of the research was to study the evolution of the characteristics of mechanical resistance for one type of steel. The material was subjected to the thermo-chemical (nitro-carburized treatment in plasma) treatment ... -
Research on the Work Place Security and Environmental Factors Affected by Lathe Work
(Universitatea "Dunărea de Jos" din Galaţi, 2014)Most work place risks are spatially and temporally determined, so a critical early need is to establish the risk of what (is happening) to whom (which part of the environment is affected), where (location) and when (in ...
