Căutare Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați după Titlu

Afișează articolele 941-960 of 1845

    • A Method for Determining the Pressure Loss Coefficients 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2012)
      For braking elements of mechanisms operated by hydraulic cylinders is used hydraulic resistance which controls the working fluid. Determination of these systems is difficult, especially in the design phase. This ...

    • A Method for Establishing by Controlled Aproximation of the Limitted Forces Developed by Alignmed of the Hydraulic Cylinder 

      Hauk, Niculai; Goanță, Adrian Mihai; Ghelase, Daniela (Universitatea "Dunărea de Jos" din Galați, 2002)
      Determination of the limited forces – in case of the mechanisms actioned by the alignmed of the hydraulic cylinders is a very difficult problem to be realized very exactly. This paper presents a numerical method with a ...

    • A Method of Assessing the Stress in some Components of Hydraulic Cylinders 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2008)
      This paper proposes a method for evaluating the stress of the unit body of the hydraulic cylinder and the rod which was at work and the Hydraulic Brake at the end of the race. The paper analyzes the situation in which ...

    • Method of Deternining the Main Features of Magnetic Ferromagnetic Materials 

      Gheorghieș, Livia; Dima, Ovidiu (Universitatea "Dunărea de Jos" din Galați, 2012)
      The purpose of this paper is to present a method for determining the main magnetic features such as magnetic induction B, magnetization M, the coercive magnetic field Hc, permeability μ, using hysteresis cycle chart. The ...

    • A Method to Evaluate the Durability of Sucker Rod Pumps and to Reduce Corrosive Wear 

      Ripeanu, Razvan George (UDJG, 2011)
      The paper presents experimental tests made in static and dynamic conditions in order to establish the wear laws for different materials’ couples at different medium temperatures and pressures. Some complex wear laws were ...

    • A Method to Increase the Accuracy Of the Mathematical Model Used to Hydraulically Actuated Mechanical Systems 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2013-10-01)
      In order to achieve mathematical models describing hydraulically driven mechanical systems are taken into account both consumer behavior and characteristics of power sources and hydraulic circuits. The variable resistance ...

    • A Method Used to Determin the Power Necessary for Hydraulic Excavators 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper presents a method of verification in the design phase, the mechanical power necessary involvement hydraulic pumps for excavators with bucket reverse.Because, in the design phase the digging forces are not ...

    • Methodology of diagnosing enterprise activity and techniques of diagnosis 

      Onica, Mihaela Cristina (Universitas Galatiensis, 2006-01)
      The diagnosing methodology, on one hand, should allow liberation of the main elements for elaboration of the survey and, besides that, for thorough research in case of abnormalities and, on the other hand, should neglect ...

    • Methods for Generating Mesh Surfaces Using CAD Systems 

      Haraga, Georgeta; Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2011)
      One of the most popular graphic software in CAD systems is AutoCAD that is used frequently by a very great number of users thanks to its numerous advantages. In this paper we present several methods to create mesh surfaces ...

    • Methods of Analysis and Evaluation of the Bankruptcy Risk 

      Bîrsan, Mihaela; Şușu, Ştefăniţă; Bălan, Alina ("Dunarea de Jos" of University of Galati, 2007-01)
      The profitableness of an enterprise cannot be appreciated irrespective of the risks wherewith this is confronting, risks corresponding to economic and financial profitableness: the economic risk, carried out into ...

    • Methods of Protection of National Architecture Monuments 

      Croitoru, Gh.; Colesnic, Ig. (Universitatea "Dunărea de Jos" din Galați, 2013)
      The paper discusses the problem of monuments conservation in terms of technical implementation and based on the importance of conservation of historical content, and it helps to skillfully handle the complicated untypical ...

    • Methods to reduce gas emissions onboard ships 

      Bosoncă, Ioan (Universitatea "Dunărea de Jos' din Galaţi, 2016)
      Regarding the latest IMO requirements, the EEDI (Energy Efficiency Design Index) is mandatory to be limited as levels under IMO MEPC requirements. The paper presents some paths to reduce EEDI as are applied onboard a ...

    • A Micro-Economic Analysis of Farm Restructuring in Khorezm Region, Uzbekistan 

      Djanibekov, Nodir (Universitas Galatiensis, 2008-01)
      The paper analyses the response of the agricultural producers to introduction of new agricultural policies in Khorezm, a region of Uzbekistan. Ever since its independence several reforms in agriculture of Uzbekistan have ...

    • Microdefects Analysis of Dental Contact Surfaces 

      Frunza, Gheorghe; Frunza, Mihai Cătălin; Suciu, Cornel (UDJG, 2010)
      The tribological processes influence the behaviour of the biocontacts between biological bodies, between biomaterials or between biological bodies and biomaterials. Whether natural or artificial, any biocontact is the locus ...

    • Microstructural Characteristics of Sintered Powder Metallurgy Alloys 

      Marin, Mihaela; Potecaşu, Florentina; Potecaşu, Octavian (Universitatea "Dunărea de Jos" din Galaţi, 2014)
      The purpose of this paper is to study the influence of processing parameters on the microstructural characteristics of sintered powder metallurgy alloys. The specimens were produced from atomised iron powders with different ...

    • Microstructural Characterization of the TiMoZrTa Alloy 

      Bălțatu, Mădălina Simona; Cimpoeșu, Ramona; Vizureanu, Petrică; Achiței, Dragoș Cristian; Minciună, Mirabela Georgiana (Universitatea "Dunărea de Jos" din Galați, 2015)
      In recent years, different types of titanium alloys have been investigated with the aim of using materials in biomaterials field, and Ti-Mo system alloys are very promising materials. Alloying titanium with biocompatible ...

    • Microstructural Evolution of al 1100 Aluminum Subjected to Severe Plastic Deformation 

      Gurău, Gheorghe; Gurău, Carmela (Universitatea "Dunărea de Jos" din Galaţi, 2012)
      The goal of this document is to promote a sequence of bulk-deformation processes able to produce ultrafine grain and also nanostructured wires with adequate length to be interesting for processing in metallurgical industry. ...

    • Minimizing the Error Tracking of Mobile Terminals by Kalman Filtering 

      Bogdan, Ion (2006)
      A method to track mobile terminals in a cellular communication network is presented. It uses the received field strength from the surrounding base stations. A subsequent Kalman filtering is used to minimize the tracking error.

    • Modal Calculus of the Reinforced Concrete Bridges Modeled as a Rigid Solid Beared on Viscous Elastic Neoprene Supports 

      Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2010)
      This paper proposes an approach of a six degree dynamic model of a rigidsolid with some types of symmetries. These symmetries lead to simplified mathematical models, which are more easily to solve. If the rigid-solid is ...

    • Modal Damping Ratio Calculation for Finited of Mechanical Systems with Viscous Elastic Bearings Using Virtual Instrumentation 

      Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2011)
      This paper proposes an approach of a finite DOF dynamic model for the rigid-solid with multiple neoprene apparatus bearings modeled as viscous elastic dampers. After a short presentation of the physical model of the solid ...