Căutare 1995-2015 după Titlu

Afișează articolele 231-250 of 326

    • Some Considerations of using Virtual Reality in the Training Process Specific to Disciplines of Applied Mechanics 

      Starețu, Ionel (Universitatea "Dunărea de Jos" din Galați, 2009)
      In this paper, we first discuss issues regarding the training in mechanical design using CAD software to develop the geometric model of the components, the simulation possibilities of functioning in the case of the model ...

    • Some Physical Changes in Extra Virgin Rapeseed Oil after the Process 

      Şolea, Liviu Cătălin; Ştefănescu, Ioan; Zgherea, Gheorghe; Creţu, Romică (Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)
      The aim of this study is the viscosity’s evolution depending on the temperature and the shear rate and the analysis at the transmittance spectra of the oxidized rapeseed oil. Rapeseed oil was oxidized at the temperatures ...

    • Specific Aspects of Modelling and Designing Gear Pumps 

      Goanță, Adrian Mihai (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper intends to highlight, in the context of general geometrical modelling, the specific aspects of design and modelling of a gear pump. In practice in such situations containing toothed gear it is recommended to ...

    • Spectrophotometric and Rheological Studies on Oxidized Soybean Oils 

      Şolea, Liviu Cătălin; Creţu, Romică (Universitatea "Dunărea de Jos" din Galaţi, 2013-10-01)
      This paper presents a rheological and spectrophotometric study of oxidized and nonoxidized soybean oils at 100, 110 and 120°C temperatures. The oxidation periods of time were 5 hours and 10 hours. Changes of the oxidized ...

    • A Statistical Analysis of the Danube Flow Regimes in Brăila Harbour Area 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2015)
      It was in the frame of the „Restoration of the aquatic and terrestrial ecosystems complex, from Fundu Mare Island, part of the Small Wetland of Brăila - RAMSAR site 1074” project to look for solutions to improve the hydro ...

    • Structural and Kinematic Analysis of Planetary Gearings 

      Naidin, Gigi (Universitatea "Dunărea de Jos" din Galați, 2011)
      By bounding two or more gearings, using a role bear-axle element, we can obtain simple transmissions with caged wheels. A transmission with gear wheels generally has, an axle of fixed rotation, called main axle. The gear ...

    • Structural Requirements of Bituminous Paving Mixtures 

      Bordea, Carmen; Năstac, Silviu (Universitatea "Dunărea de Jos" din Galați, 2002)
      In this work, the autors present some of the principal issues and challenges associated with the design and production of bituminous mixtures that can meet the ever-increasing structural needs of modern pavements.

    • Study about Dynamic Behavior of Suspended Sieve to Machine of Sorted Self-Propelled KT 45/18/13 

      Axinti, Gavril; Axinti, Adrian-Sorin (Universitatea "Dunărea de Jos" din Galați, 2006)
      In his work studied machine of sorted self-propelled KT 45/18/13. This is a made in product brand name Romania S. C. RALLY-BM. Com. Srl and is used-up for the assortment through material vibrations of grain miscellaneous ...

    • A Study of Body Posture on Human Comfort Under the Influence of Whole-Body Vibrations for the Rail Passengers 

      Picu, Ana (Universitatea "Dunărea de Jos" din Galați, 2010)
      When traveling by train, passengers are exposed to vibration. A well designed seat will attenuate the vibration path to the person in the frequency region where it is the most perceptible, between 3 and 10 Hz. This paper ...

    • A Study of Hand-Arm Vibrations for the Foresters Workers 

      Picu, Mihaela (Universitatea "Dunărea de Jos" din Galați, 2012)
      The foresters workers are especially exposed to hand-arm transmitted vibrations. These vibrations can cause the complex of vascular, neurological and musculoskeletal disorders, collectively named hand-arm vibration ...

    • Study of Noise Produced by Elevators Inside Buildings 

      Picu, Mihaela; Picu, Ana Alexandra (Universitatea "Dunărea de Jos" din Galați, 2007)
      This paper studies the way in which elevators movement produces work perturbing noises. The studies were made on two types of buildings: a modern building, with noiseless elevators and another one with old elevators. ...

    • Study of the internal Resonance of a two-Degree-of-Freedom Non-Linear Dynamic System 

      Dragomirescu, Cristian; Craifăleanu, Andrei (Universitatea "Dunărea de Jos" din Galați, 2006)
      The paper analyses a two- degree- of- freedom dynamic system, by taking into account its non- linearity. The case of the internal resonance is studied and, by local analysis, Hopf bifurcations are emphasized. Periodic ...

    • Study of The Palette-Obstacle Impact for a Concrete Mixer 

      Debeleac, Carmen (Universitatea "Dunărea de Jos" din Galați, 2013-05-01)
      In this paper the numerical simulation of the concrete mixer was developed in SimMechanics, a toolbox for Matlab environment. The virtual model for mixing equipment simulation has been computed to estimate the increase ...

    • Study on a Seismic Isolation Method Suitable for an Architectural Monument 

      Șcheaua, Fănel; Nedelcuț, Florin (Universitatea "Dunărea de Jos" din Galați, 2012)
      The research presented in this scientific paper investigates an adaptive seismic isolation system meant to protect architectural monuments structures subjected to a variety of seismic ground motions. This scientific paper ...

    • A Study on Stevens' Power Law Applied on the Human Perception of a Running Vehicle Transmitted Vibrations 

      Picu, Ana (Universitatea "Dunărea de Jos" din Galați, 2009)
      This paper studies the way humans perceive vibrations induced by a running vehicle, starting from Stevens’ Power Law. The measurable physical magnitude was the acceleration transmitted to the hand-arm system. The ...

    • Study on the influence of Sonic Generator Geometry on Acoustic Parameters 

      Ștefan, Anca; Leopa, Adrian (Universitatea "Dunărea de Jos" din Galați, 2010)
      The acoustical parameters, dimensional determination and construction of sonic generator is described in the paper. The generator’s dimensional determination and construction show that the nozzle slot, the axial resonator ...

    • Study on the Influence of Ultrasound Frequency Emitted by a Sonic Generator on Water Parameters 

      Șerban, Anca (Universitatea "Dunărea de Jos" din Galați, 2013-10-01)
      The importance of ultrasound frequency radiated by the sonic generator in the evolution of water quality parameters and its variation according to the pressure level of input air are described in the paper. Also, ...

    • Study on the Relationship Between Stability and Energy Efficiency of Hydraulic Excavators 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2014)
      The cycle of operation of hydraulic excavators has a series of steps in which large masses are accelerated and then braked. The presence of additional masses on the excavators improves stability but reduces energy efficiency. ...

    • A Study Upon Traction Systems for Technological Machines with Auto Propulsion 

      Axinti, Adrian-Sorin (Universitatea "Dunărea de Jos" din Galați, 2003)
      This paperwork presents a comparison of traction systems used for heavy machines that needs to move on public roads. (construction devices, agriculture machines, etc.). Here are presented traction charts implemented on ...

    • Technical-Economical Competitiveness of Food Industry 

      Ghelase, Daniela; Dașchievici, Luiza (Universitatea "Dunărea de Jos" din Galați, 2014)
      In the literature, different definitions of competitiveness exist. The EU Commission (2003) uses as a definition of competitiveness: the ability of an economy to provide its population with high and rising standards of ...