IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Title

Browsing Articole din publicaţii internaţionale by Title

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  • VCSEL study for gas sensing usage 
    VIERU, T.; DOROGAN, A.; VIERU, S.; DOROGAN, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    The studied VCSEL device structure had been manufactored at Ecole Polytechnique Fédérale de Lausanne, Laboratory of Physics of Nanostructures in the framework of the SCOPES project. The LIV characteristics of VCSEL chips ...
  • Versatile Fabrication of Complex Shaped Metal Oxide Nano-Microstructures and Their Interconnected Networks for Multifunctional Applications 
    MISHRA, Yogendra Kumar; KAPS, Sören; SCHUCHARDT, Arnim; PAULOWICZ, Ingo; JIN, Xin; GEDAMU, Dawit; WILLE, Sebastian; LUPAN, Oleg; ADELUNG, Rainer (Hosokawa Powder Technology Foundation, 2014)
    Metal oxide nano-microstructures are applied in photocatalytic surfaces, sensors or biomedical engineering, proving the versatile utilization of nanotechnology. However, more complex or interconnected nano-microstructures ...
  • Versatile Growth of Freestanding Orthorhombic α-Molybdenum Trioxide Nano- and Microstructures by Rapid Thermal Processing for Gas Nanosensors 
    LUPAN, Oleg; CRETU, Vasilii; DENG, Mao; GEDAMU, Dawit; PAULOWICZ, Ingo; KAPS, Sören; MISHRA, Yogendra Kumar; POLONSKYI, Oleksandr; ZAMPONI, Christiane; KIENLE, Lorenz; TROFIM, Viorel; TIGINYANU, Ion; ADELUNG, Rainer (American Chemical Society, 2014)
    We demonstrate a new technique that requires a relatively low temperature of 670–800 °C to synthesize in 10–20 min high crystalline quality MoO3 nano- and microbelts and ribbons. The developed technological process allows ...
  • Vertical Axis Wind Turbines. Optimal Positioning of the Blades Defined by Asymmetrical Airfoils 
    BOSTAN, Viorel; BOSTAN, Ion; RABEI, Ivan; GUTU, Marin; DULGHERU, Valeriu (Springer Nature Switzerland, 2020)
    Many Vertical Axis Wind Turbines (VAWTs) have blades defined by asymmetrical (cambered) airfoils. There can be two possibilities regarding the orientation of their camber in relation to the rotor’s axis: radially inward ...
  • Vertical Axis Wind Turbines: The Behavior of Lift and Drag Airfoils 
    BOSTAN, Viorel; BOSTAN, Ion; RABEI, Ivan; DULGHERU, Valeriu; CIUPERCA, Rodion (Springer International Publishing, 2019)
    The blade is the most important element of a wind turbine, as it is the component that largely governs the productivity and it is the main source of efficiency optimization. A blade is defined by the airfoil type. This ...
  • VHPN – Software Tool for Visual Discrete-Continuous Modelling of Hybrid System using Generalized Timed Differential Petri Nets 
    GUŢULEAC, Emilian; ŢURCANU, Iurie; GUŢULEAC, Emilia; ODOBESCU, Diana (Stefan cel Mare University of Suceava, Romania, 2006)
    This paper presents the timed Generalized Differential Petri Nets (GDPN) a class of Petri nets, that are accepted the negative-continuous place capacity, negative real values for continuous place marking and negative ...
  • Viability and proliferation of endothelial cells upon exposure to GaN nanoparticles 
    BRANISTE, T.; TIGINYANU, I.; HORVATH, T.; RAEVSCHI, S.; CEBOTARI, S.; LUX, M.; HAVERICH, A.; HILFIKER, A. (Beilstein-Institut, 2016)
    Nanotechnology is a rapidly growing and promising field of interest in medicine; however, nanoparticle–cell interactions are not yet fully understood. The goal of this work was to examine the interaction between endothelial ...
  • Viability and stability of fungi isolated from lake La izvor after lyophilization 
    SÎRBU, Tamara; MOLDOVAN, Cristina; ȚURCAN, Olga (Consiliul Județean Bacău, 2022)
    Lyophilization is one of the safest and most durable methods of preservation of the viability and stability of the biological properties of microorganisms. Twenty strains of aquatic fungi, representatives of the genera: ...
  • Vibrational and Polariton Spectra of CdGa2S4 and CdAl2S4 Crystals 
    SYRBU, N. N.; NEMERENCO, L. L.; COJOCARU, O. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2002)
    In this work the vibrational and polariton optical spectra of the CdGa2S4 and CdAl2S4 crystals grown from vapor phase and by the Bridgman method have been investigated. The light scattering by polaritons excited of various ...
  • Vibrational modes in ZnAl2S4 and CdIn2S4 crystals 
    SYRBU, N. N.; BOGDANASH, M.; MOLDOVYAN, N. A. (Elservier, 1996)
    Infrared reflectivity spectra and Raman scattering of the ZnAl2S4 and CdIn2S4 crystals have been investigated. Reflectivity spectra contours were calculated and phonon parameters and dielectric constants were determined. ...
  • Vibrational modes of CuAl/sub 1-x/Ga/sub x/Se/sub 2/ solid solution 
    SYRBU, N. N.; BOGDANASH, M.; TEZLEVAN, V. E. (IEEE, 1996)
    In the present paper new results of Raman scattering of CuAl/sub 1-x/Ga/sub x/Se/sub 2/ crystals by the unpolarized light at 77 K are presented. IR reflectivity spectra of this solid solution have been investigated for ...
  • Vibrational properties of CdGa2S4 
    NEUMANN, H.; SOBOTTA, H.; RIEDE, V.; SYRBU, N. N.; RADAUTSAN, S. I. (WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1984)
    Polarization-dependent infrared reflectivity spectra of CdGa2S4 are measured at 300 K in the wavenumber range from 180 to 500 cm−1. The analysis of the spectra yields three E and four B modes in this frequency range. The ...
  • Vibrational properties of CdGa2S4 at high pressure 
    GALLEGO-PARRA, S.; GOMIS, O.; VILAPLANA, R.; ORTIZ, H. M.; PÉREZ-GONZÁLEZ, E.; LUNA, R.; RODRÍGUEZ-HERNÁNDEZ, P.; MUÑOZ, A.; URSAKI, V. V.; TIGINYANU, I. M.; MANJÓN, F. J. (AIP Publishing LLC, 2019)
    Raman scattering measurements have been performed in cadmium digallium sulphide (CdGa2S4) with defect chalcopyrite structure up to 25 GPa in order to study its pressure-induced phase transitions. These measurements have ...
  • Vibrational study of HgGa2S4 under high pressure 
    VILAPLANA, R.; ROBLEDILLO, M.; GOMIS, O.; SANS, J. A.; MANJÓN, F. J.; PÉREZ-GONZÁLEZ, E.; RODRÍGUEZ-HERNÁNDEZ, P.; MUÑOZ, A.; TIGINYANU, I. M.; URSAKI, V. V. (American Institute of Physics, 2013)
    In this work, we report on high-pressure Raman scattering measurements in mercury digallium sulfide (HgGa2S4) with defect chalcopyrite structure that have been complemented with lattice dynamics ab initio calculations. Our ...
  • Vibroacoustical diagnosis of planetary precessional kinematical transmission 
    MALCOCI, Iu.; BODNARIUC, I. (IOP Publishing, 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 ...
  • Vibroacoustical Diagnosis of Planetary Precessional Kinematical Transmission (Part 1) 
    MALCOCI, Iulian; BODNARIUC, Ion (Trans Tech Publications Ltd, 2015)
    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 ...
  • Vinovăția victimei - problemă a cauzalității criminalității 
    URSU, Viorica (Universitatea Academiei de Ştiinţe a Moldovei, 2014)
    Cercetarea victimologică a „vinovăției” victimei reprezintă cheia de soluționare a problemei cauzalității criminalității și clarificării mecanismului comportamentului infracțional individual, fiind importantă, de asemenea, ...
  • Violation of the Wiedemann-Franz law in quasi-one-dimensional organic crystals 
    CASIAN, Anatolie (American Physical Society, 2010)
    The charge and energy transport in some highly conducting quasi-one-dimensional organic crystals is studied. Two electron-phonon interactions and scattering on impurity are considered. It is found that the Wiedemann-Franz ...
  • Visualitation of undulatory mass transfer in nearsurface vicinity of indentation contact zone 
    GRABCO, D.; SHIKIMAKA, O.; HAREA, E.; PYRTSAC, C. (Institutul de Fizică Aplicată al AŞM, 2010)
    Deformation regularities of crystals, films and coated systems assume ever greater importance in recent years. Particularly, it concerns the micro- and nanoindentation processes because of their large practical application. ...
  • Visualization of the surface topography of Nb, CuNi alloy and CoO films by the atomic force microscope 
    MORARI, Cristina; AWAWDEH, Adnan; MORARI, Roman; ZDRAVKOV, Vladimir; SIDORENKO, Anatoly (Institutul de Fizică Aplicată al AŞM, 2012)
    In this work describes the process of scanning surface of Nb, CuNi alloy and CoO films using AFM, the main regimes of operation are presented and the three-dimensional topography of scanned surfaces are discussed.

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