Browsing 2012 by Title

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  • Modul de dirijare a puterii optice a diodelor laser 
    GRITCO, Andrei; ZAVRAJNII, Serghei; TIRON, Iurie; NICA, Iurie (Technical University of Moldova, 2012)
    This article describes the optical power control module, of laser diodes, which is included in the therapy installation using local hyperthermia. The function of this module is to produce and maintain, during the entire ...
  • Monoidul cozilor оn raport cu operaţia de concatenare 
    BITCOVSCHI, Lucia (Technical University of Moldova, 2012)
    The purpose of this paper ist o investigate the tails in terms of algebraic structures. Will be considered the most important operations such as concatenation of queues, inserting an item in the queue. Queue elements are ...
  • Non-lithographic nanotechnologies for 2D and 3D nanofabrication 
    TIGINYANU, I. M. (Technical University of Moldova, 2012)
    In this paper we present a review of technological approaches for 2D and 3D nanofabrication of semiconductor compounds by using radiation treatment and electrochemistry. Novel spatial nanoarchitectures based on III-V and ...
  • Nonlinear cooling of a quantum micro-circuit 
    BARDETSCHI, Profirii; CIORNEA, Viorel; MACOVEI, Mihai A. (Technical University of Moldova, 2012)
    The cooling effects of a quantum LC micro-circuit coupled inductively with a single or an ensemble of artificial qubits are investigated. For appropriate bath temperatures and the resonator’s quality factors, we demonstrate ...
  • Nonlinear cooperative steady states of fröhlich phonons in biological objects 
    CIOBANU, Nellu; TRONCIU, V.Z.; RUSU, Dragos; ROTARU, Anatol (Tehnica UTM, 2012)
    Nonlinear cooperative stationary phenomena are studied at the interaction of Bose-condensed phonons with millimeter electromagnetic radiation in biological media. The real and imaginary parts of dielectric susceptibility ...
  • Optical correlation processors for high-speed objects recognition and localization 
    PERJU, Veacheslav; CASASENT, David; YOUNG, Rupert; PERJU, Veacheslav V. (Tehnica UTM, 2012)
    In the article there are presented the mathematical and structural descriptions of the basic model of the optical correlation processor, of the processor using the matrixes of the lasers and filters. In order to decrease ...
  • Optical spectra in the region of excitonic resonances in quantum wells and quantum dots of In0.3Ga0.7As/GaAs heterostructures 
    DOROGAN, A.; DOROGAN, V.; MEREUTA, A.; SYRBU, A.; SYRBU, N.; VIERU, T.; URSAKI, V.; ZALAMAI, V.; IACOVLEV, V. (Technical University of Moldova, 2012)
    Lines conditioned by the transitions hh,lh1-e1(1s,2s,3s), hh2,lh2-e2(1s,2s,3s), hh1,lh1-e2(1s) and hh3,lh3-e3(1s) had been revealed in reflection spectra of In0.3 Ga0.7As / GaAs nanostructures. The shapes of the reflection ...
  • Parametric exciton–polariton oscillator in a microcavity 
    KHADZHI, P. I.; VASILIEVA, O. F. (Technical University of Moldova, 2012)
    We study the dynamics of parametric oscillations of polaritons in a microcavity that consists of a periodic conversion of a pair of pump polaritons into polaritons of signal and idle modes and vice versa. The period and ...
  • Particularităţile asamblării BGA-componentelor pe circuite imprimate multistrat 
    GANGAN, Silvia; ROTARU, Mihail; DIMITRACHE, Pavel; POPESCU, Nicolae (Technical University of Moldova, 2012)
    This article presents some peculiarities of assembly of BGA – components on the surface of multilayer printed circuit. Difficulties in the choice of ball terminals and controlling the soldering quality are described. An ...
  • Particularităţile diagnosticării defectelor rulmenţilor 
    SOROCHIN, Gherman; TINCOVAN, Sergiu (Tehnica UTM, 2012)
    The paper deals with some approaches to the diagnostics of roller bearing defects. Dignity of the envelope analysis method for monitoring and diagnostics of defects on the basis of spectrum and cepstrum of vibration ...
  • Particularităţile efectelor de transport în antimonidul de galiu dopat cu nichel 
    GHEORGHIŢĂ, Eugen; KOROLEVSKI, Boris; POSTOLACHI, Igor; GUŢULEAC, Leonid; UNTILĂ, Pantelei (Technical University of Moldova, 2012)
    In present paper it is analyzed the changes of the galvanomagnetic effects of gallium antimonide under the influence of the nickel. It shows anisotropy of the transport effects in relation to the orientation of inclusions ...
  • Peculiarities of silver photodissolution in (GeS4 ) (AsS3 )x-1 glassy films 
    TSIULYANU, D.; STRATAN, I.; PILETCHI, N. (Technical University of Moldova, 2012)
    The kinetics of the photodissolution (PD) of Ag into glassy (GeS4 ) (AsS3 )x-1 films has been studied by monitoring the changes that occur in their optical transmission of weakly absorbed broadband light. It was shown that ...
  • Phonon engineered suppression of lattice thermal conductivity in segmented and cross-section modulated silicon nanowires 
    NIKA, Denis (Technical University of Moldova, 2012)
    The strong suppression of lattice (phonon) thermal conductivity in segmented nanowires, consisting of acoustically-mismatched materials, as well as in cross-section modulated Si nanowires is theoretically demonstrated using ...
  • Physical and optical properties of amorphous (As2(Sb2)Se3)1-X:SnX thin films 
    IOVU, M. S.; HAREA, D. V.; COLOMEICO, E. P.; HAREA, E.; COJOCARU, I. A. (Technical University of Moldova, 2012)
    The mechanical properties (the hardness H), the morphology, the 119Sn Mossbauer spectroscopy, and the Temperature Modulated Differential Scanning Calorimetry (MDSC) of amorphous (As2Se3)1-x:Snx and (Sb2Se3)1-x:Snx bulk ...
  • Porosification of narrow and wide band gap semiconductor compounds: comparative study of InAs, InP and ZnSe 
    MONAICO, Eduard; TIGINYANU, I. M.; URSAKI, V. V.; COLIBABA, G.; NEDEOGLO, D. D.; COJOCARU, A.; FÖLL, H. (Technical University of Moldova, 2012)
    A comparative study of the pore growth during anodization of a narrow-bandgap III-V compound (InAs), a medium-bandgap III-V compound (InP) and a wide-bandgap II-VI semiconductor (ZnSe) is performed. It was found that the ...
  • Preparation and properties of colloidal GaP nanoparticles 
    IACOB, M.; RUSU, E.; PYSHKIN, S.; URSAKI, V.; BELEVSCHII, V.; BALLATO, J. (Technical University of Moldova, 2012)
    Recent results regarding technological aspect of preparing high quality GaP nanoparticles for use in light emissive devices are presented in this work. The nanoparticles have been prepared by a colloidal low temperature ...
  • Problema căutării polinoamelor ireductibile asupra extensiei câmpurilor Galois 
    BODEAN, D.; BODEAN, Gh. (Tehnica UTM, 2012)
    In this work the solution of searching irreducible polynomials over extension Galois field is presented. The proposed algorithm is based on the trace generation and testing the subperiods resulted from factorization the ...
  • Procesarea şi analiza întrebărilor într-un sistem de „întrebare-răspuns” 
    LAZU, Victoria; PRODAN, Tatiana (Technical University of Moldova, 2012)
    This paper tackles the issue of the question-answering system for Romanian speakers that is being developed within the project “Research in the field of Information Retrieval for question-answering system creation”. The ...
  • Procesul termic de aliere a straturilor epitaxiale de arseniură de galiu cu comandă automată 
    BARANOV, S.; COJUHARI, I.; GORCEAC, L.; RADU, P. (Technical University of Moldova, 2012)
    The automatic control system for thermal alloying process of GaAs epilayers growth by transport reaction in Ga-AsCl3-H2 system is reported. The control system was built on universal two-channels programmable PID-regulator ...
  • Production and comparative study of ZnO films obtained by magnetron sputtering, MOCVD and electrochemical deposition 
    RUSU, E.; BURLACU, A.; ZALAMAI, V.; URSAKI, V.; PRILEPOV, V. (Technical University of Moldova, 2012)
    It was found that the morphology, electrical and luminescence properties of ZnO layers obtained by Magnetron sputtering, MOCVD and Electrochemical deposition can be controlled by technological parameters such as the ratio ...

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