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Afișează articolele 2686-2705 of 2993
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The Action of the Ultrasonic Vibration Over the Diffusion Process in Gases and Liquids
(Universitatea "Dunărea de Jos" din Galați, 2007)Among the new method of studying the properties of the substance and the influence over the most various physical and chemical processes, used in different industrial domains, the main place is occupied by the usage of ... -
The Actionnary System of the Continnous Discharge Furnace from L.T.G.-1. Mittal Steel
(Universitatea "Dunărea de Jos" din Galați, 2005)In this study the authors made a systematically research about the actionnary system at the continuous discharge heating furnace. It take in account the possibility to use a new material, with most good wear resistance, ... -
The actual implications of the European Union member state quality
(Universitatea ,,Dunărea de Jos" din Galați, 2008-01)Romania, by adhering to the European Union, became part of the most achieving system of political and economical organization known in history. It can be appreciated the fact that the national parliament has a multiple ... -
The alternate history or earth as it might be, might have been or should have been
(Universitatea "Dunărea de Jos" din Galați, 2005-01)Istoria alternativă este o specie a genului literar science fiction care răspunde la întrebarea „Ce s-ar fi întâmplat dacă istoria ar fi urmat un alt curs?” Spre deosebire de istoric sau de autorul unui roman istoric, cel ... -
The Analysis of a Workplace from an Ergonomically Criterion. Case Study: Preliminary Charge
(Universitatea "Dunărea de Jos" din Galați, 2013)This paper presents a practical method of analyzing a wokplace from an ergonomically criterion based on an "ergonomic analysis questionnaire", and, also, the conclusions and proposed measures in order to improve the ... -
The Analysis of the Bending Sprigs' Weight Influence on the Resonance Characteristic of the Elastical Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2007)The Analysis of the Bending Springs' Weight Influence on the Resonance Characteristic of the Elastical Mechanical Systems -
The Analysis of the Breaking Susceptibility of Some Feritic Stainless Steel
(Universitatea "Dunărea de Jos" din Galați, 2007)The growth of the world stainless steel conumption was the result of some new domains development, of some demands and special conditions undercooling not only the adaptability of this alloy but also the remarcable range ... -
The Analysis of the CAM Mechanisms Using Matrix Calculations
(Universitatea "Dunărea de Jos" din Galați, 2011)The present study presents the kinematic analysis of a mechanical structure created by cam mechanism RR-CC. It was determined the position, velocity and angular acceleration of the tapped, as depending on the position ... -
The Analysis of the Dynamic Response of the Hydrostatic Driving Systems in a Closed Circuit
(Universitatea "Dunărea de Jos" din Galați, 2002)The hydrostatic actions in a closed circuit were remarked in the action of the technological equipment both for achievement of translation motions with linear hydrostatic engines with bilateral stem and for rotational ... -
The Analysis of the Torsional Springs' Inertia Influence on the Resonance Characteristic of the elastical Mechanical Systems
(Universitatea "Dunărea de Jos" din Galaţi, 2006)The study presents the phases and the final result of the physical and mathematical models' elaboration of elastic mechanical systems with one degree of freedom taking into consideration the distributed mass of the twist ... -
The Analytical Exact Solutions of Non-Linear Differential Equations Which Describe the Parametric Free Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos' din Galați, 2010)The movements of many material systems can be described by differential equations that have coefficients that depend on time. It is difficult to determine the solutions of these equations. Although many concrete problems ... -
The Application of CRN Coating in Sliding Pairs under Lubrication Conditions
(UDJG, 2011)This work revealed the results of the impact of the formed surface layer CrN and the surfaces layer CrN-steel 46Cr2 “ring” structure. The sliding pairs worked under conditions of lubricating the friction area with Lotos ... -
The Approximate Analytical Solutions for the Differential Equations which Desccribe Free Vibrations of Non-Linear Mechanical Systems
(Universitatea "Dunărea de Jos' din Galați, 2006)The oscillation movement of a mechanical non-linear system is not easy to solve exactly on analytical way. The approximate solutions are based on different methods and give different values with different approximation degree. ... -
The Approximate or Exact Analytical Solutions for the Differential Equations Which Describe Parametric Free Vibrations of Mechanical Systems
(Universitatea "Dunărea de Jos" din Galați, 2013-05-01)The vibrations of many mechanical systems can be described by differential equations that have coefficients that depend on time. It is difficult to determine the approximate or exact analitical solutions of these equations. In ... -
The Assessing of Mechanical Characteristics of the Steel Sheets Designed for Drawing for a Five-Month-Period as an Effect of Natural Ageing
(Universitatea "Dunărea de Jos" din Galați, 2009)In the paper it is presented a study run on a five-month-period regarding the changes in the mechanical characteristics due to natural ageing for a drawing steel, cold rolled, unalloyed with 0.04% C. The ageing tendency ... -
The authentification of Old Bronze Coins and the Structure of the Archaeological Patina
(Universitatea "Dunărea de Jos" din Galați, 2006)This paper presents comparative results concerning the chemical composition and mineralogical distribution of the main compounds from the structure of the archaeological patina of ancient bronze coins, which were determined ... -
The Behavior of Mechanical Model Wheel' S Loader
(Universitatea "Dunărea de Jos" din Galați, 2002)In this work is described a dynamical model for the tire-suspension system of wheel loader. This model is based on the subdivision of the global dynamical system into its physical components: the tire, the wheel, ... -
The behaviour of Acid Slag in the Tundish
(Universitatea "Dunărea de Galați, 2013)In the tundish, purification of steel is given by the use of an oxide powder on the steel surface. This powder perform several important functions, such as thermal insulation, protection against liquid steel surface ... -
The Behaviour of Two Non-Conventionally Treated Steels During Corrosion Process
(Universitatea ”Dunărea de Jos” din Galați, 2009)This paper presents an analysis on two steel grades, subjected to nitriding thermo-chemical treatment after classic / thermo-magnetic treatments (in direct current/alternative current). It was estimated the durability of ... -
The Boolean Operations with CAD Systems
(Universitatea "Dunărea de Jos" din Galați, 2009)The AutoCAD software is a power computer-aided design (CAD) system that can offers all users of graphics, 2D and 3D objects representation. In this paper, we present the basic Boolean operations that allow adding, ...
