Browsing Nr. 4 by Title

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  • Elaboration and design of the planetary precessional transmission 
    BOSTAN, I.; DULGHERU, V. (Technical University of Moldova, 2016)
    Some problems of mechanical transmissions can be solved with special effects by developing new types of transmissions based on planetary precessional transmissions with multiple gear, that were developed by the author. ...
  • Energy conversion, consumption and conservation 
    BOSTAN, Viorel; BOSTAN, Ion; DULGHERU, Valeriu (Technical University of Moldova, 2016)
    Today, most of the energy needed for daily consumption is produced by burning fossil fuels - coal, oil and natural gas. Several million years, plants and animals decomposing led to the formation of fossil fuels, which, ...
  • The formation and testing of the tribological layers sprayed in the plasma jet 
    GALUŞCA, Eduard (Technical University of Moldova, 2016)
    The materials used for installations from the food industry, demand special requirements - as high resistance to wear, corrosion... To solve some of these problems, so to increase the tribological proprieties and also to ...
  • The impact of season on Ash content in local goat milk 
    BULGARU, Viorica; GUTIUM, Olga (Technical University of Moldova, 2016)
    Within the same species and breeds the lactation period has a great influence on the total ash content. Milk collected in December compared with samples in August has a larger increase in ash content, this increase is more ...
  • Increasing the durability of expanded clay lightweight concretes for thin-walled hydraulic engineering structures 
    MISHUTIN, A. V.; KROVIAKOV, S. O.; ZAVOLOKA, M. V.; BOGUTSKY, V. L.; STANCHYK, Ie. V. (Technical University of Moldova, 2016)
    This article reveals that modified expanded clay lightweight concrete can be effectively used for construction of thin-walled hydraulic engineering structures. Influence of the composition of lightweight concrete on its ...
  • Investigation of hydration processes of nanomodified calcium sulfate hemihydrate 
    DEREVIANKO, V. N.; KONDRATIEVA, N. V.; SANITSKIY, N. A.; HRYSHKO, H. M. (Technical University of Moldova, 2016)
    This article presents the results of the investigation of gypsum hydration processes in the presence of carbon nanomodifiers. The hemihydrate calcium sulphate molecule interaction with graphene-like surface is the chemical ...
  • Personalities of the scientific universe: Hermann Oberth 
    MANOLEA, Gheorghe (Technical University of Moldova, 2016)
  • Quality of local goat milk depending on the season 
    BULGARU, Viorica (Technical University of Moldova, 2016)
    Goat milk quality depends on factors such as breed, number and stage of lactation, health status, region, diet, and has a predominant influence on the quality of subsequent goat milk products. The main objective of present ...
  • SCADA system application in wastewater treatment plants 
    CIOBANU, N.; BUŢANU, V.; SECRIERU, N.; UNGUREANU, D. (Technical University of Moldova, 2016)
    The modality traditional management and maintenance of WWTP plants is very inefficient or impossible, therefore it found advantageous to implement a management system, enabling the state to identify complex data acquisition, ...
  • Speckle pattern of radiation scattered of soft biological tissues. Light fields outside tissue 
    ABRAMOVICH, Nicolai; DICK, Serghei; SONTEA, Victor (Technical University of Moldova, 2016)
    Speckle patterns observed by reflected light from a multi-layered skin tissue are theoretically studied. Biological and optical factors related with volume concentration of melanin in epidermis and of blood in dermis, which ...
  • State of the art of photovoltaics 
    BĂJENESCU, Titu-Marius I. (Technical University of Moldova, 2016)
    The current and future trends in photovoltaic cells and systems are reviewed in this paper. Solar electricity is more expensive than that produced by traditional sources. But over the past two decades, the cost gap has ...
  • Teaching creativity and inventive problem solving in science 
    DULGHERU, Valeriu (Technical University of Moldova, 2016)
  • Vibroacoustical diagnosis of planetary precessional kinematical transmission 
    MALCOCI, Iu.; BODNARIUC, I. (Technical University of Moldova, 2016)
    An ideal dynamical system should not generate any vibrations, because vibrations mean a loss of energy. Vibration in planetary precessional gear box occurs at bearings, gear wheels, misaligned shafts, imbalance rotating ...

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