Căutare 2007 fascicula14 după Titlu

Afișează articolele 12-24 of 24

    • 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. ...

    • The Analysis of the Bending Sprigs' Weight Influence on the Resonance Characteristic of the Elastical Mechanical Systems 

      Debeleac, Carmen-Nicoleta; Drăgan, Nicușor (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 Dynamic Modelling of the Mechanical Systems. Calculus of the Equivalent Mass and Equivalent Mass Inertia 

      Debeleac, Nicoleta; Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2007)
      This study presents the phases and the final result of the physical and mathematical models' elaboration of mechanical systems with elastical and rigid elements taking into consideration the equivalent mass and inertia. The ...

    • The Dynamics of the Rigid Body with Passive Hydraulics Linkages 

      Axinti, Gavril; Nedelcuț, Florin (Universitatea "Dunărea d Jos" din Galați, 2007)
      The paper refers to the case of the rigid body subject to linkages materialised through linear hydraulics engines. We will settle the mathematic model of the rigid and will determine its kinetic and dynamic characteristics. ...

    • The Energetic Analysis of Hydraulic Actuators Used for Small Mobile Cranes 

      Axinti, Gavril (Universitatea "Dunărea de Jos" din Galați, 2007)
      The paper presents applied usual solutions to the action of light self-propelled cranes, up to 6 tf. It is accomplished an analysis of usual solutions of action and more over of comanding the equipment. It is analized ...

    • The Grinding Charge of Rotary Mills 

      Ene, Gheorghe (Universitatea "dunărea de Jos" din Galați, 2007)
      This paper presents the achievemens of grinding charge for the tube mills with balls.The author shows charactheristic size of grinding media charge: bulk density, porosity, filling degree. Regarding this last size,the author ...

    • The Idenfication (In Simulink) of an Elastic 

      Bălan, George C.; Ioniță, Bogdan (Universitatea "Dunărea de Jos" din Galați, 2007)
      In this paper is realized the identification of an elastic system with one degree of freedom, for which we experimentally pick up (in SIMULINK) the resonance curve. The system parameters (m, c, k) are determined using ...

    • The Impact of Occupational Noise on the Workers. Romanian and EU Legislation 

      Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2007)
      Noise is most obviously a problem in industries such as manufacturing, mining and construction but it can also be an issue in a wide range of other working environments like energy, transports, call centers, schools, orchestra ...

    • The Impact of the Technological Equipment Vibration on the Environment 

      Leopa, Adrian (Universitatea "Dunărea de Jos" din Galați, 2007)
      The shocks & vibrations generated by the operation of such tools, are conveyed to the foundation environment affecting both the near – by building safety and the comfort of the unit personnel and of the surrounding ...

    • The Mechanical Low Frequency Signal Reconstruction by it's Spectral Components 

      Grigorescu, Luiza (Universitatea "Dunărea de Jos" din Galați, 2007)
      This paper is a point of view of a new way of signal reconstruction through it’s spectral components. Sampling theory is analyzed from different perspectives, what means if for technical reasons the time can’t be sampled ...

    • The Noise at Work and the Professional Diseases 

      Drăgan, Nicușor (Universitatea "Dunărea de Jos" din Galați, 2007)
      This article describes the effects of workplace noise and outlines the main steps that should be taken to reduce and control noise at work. Exposure to noise at work can harm workers’ health. The most wellknown effect ...

    • The Study of the Influence of Stability for Hydraulic Tracked Excavators Excavators with Bucket Using Assisted 

      Hauk, Niculai (Universitatea "Dunărea de Jos" din Galați, 2007)
      The technological process of digging the natural earth using hydraulic excavators with bucket has the following steps: dislocation, transporting and depositing in means of transportation. During this process the excavator ...

    • Working Characteristics of the Special Isolation Devices Against Vibratory Actions 

      Năstac, Silviu-Marian (Universitatea "Dunărea de Jos" din Galați, 2007)
      The actual researches for finding optimal antiseismic protection solutions are straightening to the few areas of activity: the first area of research is the base isolation of buildings or theirs parts, against the ...