Browsing 2009 by Title

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  • The effects of deposition potential and H2O2 concentration on electrochemically grown ZnO 
    BURLACU, Alexandru (Technical University of Moldova, 2009)
    This paper presents the results of electrochemical deposition of zinc oxide (ZnO) on zinc foil from zinc nitrate, zinc sulfate and hydrogen peroxide solutions. The equations of the chemical reactions taking place are ...
  • Effects of γ – irradiation on ZrO2 properties 
    SHISHIYANU, Sergiu T.; GUEORGUIEV, Valentin K.; YILMAZ, Ercan; TURAN, Rasit; SHISHIYANU, Teodor S. (Technical University of Moldova, 2009)
    The doses of γ –irradiation applied have been up to 80 Gray. The C-V characteristics seeing as the flat-band shift when exposed to γ – irradiation showed high sensitivity. Raman scattering measurements of the undoped ZrO2 ...
  • Elaborarea Aparatului pentru Analiza Variabilităţii Ritmului Cardiac 
    ARMENCEA, Nicolae; ŞONTEA, Victor; IAVORSCHI, Anatolie; PAHOMI, Valerii; PÎRŢAC, Valeriu (Technical University of Moldova, 2009)
    In this work is presented the device for heart rate variability analysis and the methods and the principal parameters of analys heart rate variability (HRV).
  • Electrical behavior of the CdTe heterojunction cells fabricated on polyimide substrates 
    POTLOG, Tamara; SPALATU, Nicolaie (Technical University of Moldova, 2009)
    Hot-wall technique has been used for preparation of CdTe heterojunction cells on the polyimide substrates covered with ITO layer. Carrier transport mechanisms of the heterojunction cells are briefly discussed. It has been ...
  • Electrochemically Nanostructured ZnSe for Photonic and Optoelectronic Applications 
    TIGINYANU, I.M.; MONAICO, E.; URSAKI, V.V.; COLIBABA, G.; NEDEOGLO, D.D.; LEPORDA, N. (Technical University of Moldova, 2009)
    In this paper we demonstrate the possibility to control the conductivity of ZnSe in a degree acceptable for electrochemical nanostructuring. Technological methods for the preparation of nanostructures and composite materials ...
  • Estimarea testabilității circuitului digital al contraexemplului Schneider 
    COJOCARU, Ion; ŞERBANAŢI, Luca; PĂVĂLOIU, Bujor; RADOVICI, Alexandru; VASILOŢEANU, Andrei (Technical University of Moldova, 2009)
    The inefficiency of the one way activation method DALG-I was demonstrated in the base of a singleerror 6≡0 for the circuit of the Schneider’s counterexample [2]. As a consequence the DALG-II lgorithm for the simultaneous ...
  • Estimation of language complexity for the human computer interection systems 
    OBJELEAN, Nicolae (Technical University of Moldova, 2009)
    We describe methods for estimation the phonemic, words and lexical ambiguity for automatic speech recognition systems. This methods are use the phonemic structure of spoken words, size of dialogue vocabulary, probability ...
  • Event-threading calculation algorithm complexity estimation 
    CHIOR, Alexandr (Technical University of Moldova, 2009)
    In this paper it is considered a new variant of artificial neural network (ANN) and calculation algorithm so-called event-threading ANN. The classical model of ANN is enhanced by introducing the notion of event-threading ...
  • Exciton Spectra of CuAlS2 and CuAlSe2 Crystals 
    SYRBU, N. N.; URSAKI, V. V.; DOROGAN, A.; GALBIC, I.; KORZUN, B. V.; FADZEYEVA, A. A.; MIANZELEN, R. R. (Technical University of Moldova, 2009)
    The reflectivity exciton spectra are researched for CuAlS2 and CuAlSe2 crystals at 10K. The chipping values were calculated caused by the crystal field and spin-orbital interaction of valence zones. There have been estimated ...
  • Fast Layer 2 Handover Between WiFi and 3G Cellular Networks 
    PLOPEANU, Mircea; CONSTANTINESCU, Mihai; CROITORU, Victor (Technical University of Moldova, 2009)
    This paper presents the events that help achieve the handover operation, based on the IEEE 802.21 standard. It will describe the wireless networks WLAN and 3G, IEEE 802.21 components and handover methods between the two ...
  • Fault Models for Phase Change Memory 
    MOHAMMAD, Mohammad Gh. (Technical University of Moldova, 2009)
    Phase Change Memory (PCM) is the newest type of non-volatile memory that shall replace the currently wide spread flash memory. Recent research activities performed on PCM reliability and operation have identified special ...
  • Fenomene de supratensiune în transformator 
    CATLABUGA, Eugeniu (Technical University of Moldova, 2009)
    În lucrare se propun ecuaţiile cu derivate parţiale şi în formă complexă pentru calcularea repartiţiei tensiunii de-a lungul înfăşurării la intrarea undei de tensiune inaltă în transformator. Deasemenea se prezintă curbele ...
  • Filiform nanoarchitectures consisting of arrays of highly integrated Bi nanowires in glass envelopes 
    POSTOLACHE, V.; IOISHER, A.; MONAICO, E.; BADINTER, E.; TIGINYANU, I.M. (Technical University of Moldova, 2009)
    Using a modified version of the Taylor method, we show the possibility to produce glass micro-cables comprising huge amounts of Bi nanowires in glass envelopes, each nanowire being electrically isolated from the neighbouring ...
  • Filters with Optical Isotropic Wavelength 
    SYRBU, N. N.; DOROGAN, A.; STAMOV, I. (Technical University of Moldova, 2009)
    In the present work it is presented the construction of Band-Pass-Mode Filter and Band –Elimination-Mode Filter used for decreasing the track of the excitation lines 536.7nm and 632.8nm, respectively, for Ar+ and He-Ne ...
  • Galvano-Magnetic Properties and Shubnikov de- Haas Effect of Te- Whiskers 
    BEREZOVETS, Veacheslav; BONDARCHUK, Nikolai; NIJANKOVSKII, Viktor; NIKOLAEVA, Albina (Technical University of Moldova, 2009)
    The work is devoted to investigation of the peculiarities of magnetoresistance, Hall effect and Shubnikov de Haas oscillations in Te- whiskers. Te- whiskers was prepared from vapor- gas phase on the substrate pure tellurium ...
  • Generalized hyperbolic model for I-V characteristic of semiconductor devices 
    PENIN, Alexandr; SIDORENKO, Anatoli (Technical University of Moldova, 2009)
    It is proposed to use the models of volt-ampere characteristics of semiconductor devices such as transistors and photovoltaic cells as a physically reasonable hyperbolic characteristic of the active two-pole with self-limitation ...
  • Generatoare de Sisteme Expert: Modele Neurale 
    CĂPĂŢÂNĂ, Gheorghe (Technical University of Moldova, 2009)
    In this work were described four models of expert systems’ generators, inspired by some phenomena of information processing that occur in the nervous system.
  • Generator de Sisteme Informatice WEB Orientate Utilizator 
    RACOVIŢA, Vasile; CĂPĂŢÂNĂ, Gheorghe (Technical University of Moldova, 2009)
    It was showed up the concept of the user orientated WEB based Informational System Generator. There are the characteristics of WEB based applications for database driven informational management, build for final users. ...
  • Giant magnetoresistance and magnetothermopower in single-crystal Bi1-x Sbx wires 
    NIKOLAEVA, A.; BODIUL, P.; KONOPKO, L.; MOLOSHNIK, E.; POPOV, I. (Technical University of Moldova, 2009)
    A signicative increase in the transverse magnetoresistance and magnetothermopower in single-crystal Bi1-x Sbx wires obtained by liquid phase casting in the temperature range 80-100 K is found. A shift to the range of lower ...
  • High aspect ratio self ordered alumina nanotubes, SEM and EDX characterization 
    ENACHI, Mihail (Technical University of Moldova, 2009)
    Alumina nanotube and porous membranes were fabricated by anodic oxidation of 99.99 % aluminum foils in aqueous electrolytes containing orthophosphoric acids and nickel sulfate hydrate. This way, nanotubes and porous alumina ...

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