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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  • Porous coatings obtained on titanium after IMPULSE – PEO processes 
    ROKOSZ, K.; HRYNIEWICZ, T.; DUDEK, Ł.; PIETRZAK, K.; RAAEN, S.; MALORNY, W.; CIUPERCA, R. (IOP Publishing, 2019)
    The surface stereometry and chemical compositions of porous coatings obtained during Plasma Electrolytic Oxidation, PEO / (Micro Arc Oxidation, MAO) processes with use of impulse regime with different frequencies were the ...
  • Porous II-VI vs. porous III-V semiconductors 
    LANGA, S.; TIGINYANU, I. M.; MONAICO, E.; FÖLL, H. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2011)
    In this work a morphological comparison of porous structures obtained by means of electrochemical etching in II-VI (ZnSe, CdSe) and III-V (InP, GaAs, GaP) semiconductors is presented. It is shown that in III-V semiconductors ...
  • Porous III–V compound semiconductors: formation, properties, and comparison to silicon 
    FÖLL, H.; CARSTENSEN, J.; LANGA, S.; CHRISTOPHERSEN, M.; TIGINYANU, I. M. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2003)
    Pore formation in n-type III–V semiconductors will be discussed and compared to pore formation in silicon. While by now many different kinds of pores were produced in silicon, the “pore zoology” in III–Vs was rather limited ...
  • Porous III–V compounds as nonlinear optical materials 
    TIGINYANU, I. M.; KRAVETSKY, I. V.; LANGA, S.; MAROWSKY, G.; MONECKE, J.; FÖLL, H. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2003)
    Electrochemical etching is shown to represent a unique approach for tailoring linear and nonlinear optical properties of III–V compounds. We demonstrate that under defined etching conditions uniformly distributed pores ...
  • Porous InP as Piezoelectric Component in Magneto-Electric Composite Sensors 
    GERNGROSS, Mark-Daniel; SPRINCEAN, Veaceslav; LEISNER, Malte; CARSTENSEN, Jürgen; FÖLL, Helmut; TIGINYANU, Ion (The Electrochemical Society, 2011)
    We report on the fabrication of cheap piezoelectric porous InP templates by electrochemical etching and additional purely chemical post-etching and on the galvanic filling of the resulting nanopore array with Ni-Fe using ...
  • Porous semiconductor compounds 
    MONAICO, Eduard; TIGINYANU, Ion; URSAKI, Veaceslav (IOP Publishing, 2020)
    In this review paper, we present a comparative analysis of the electrochemical dissolution of III–V (InP, GaAs, GaN), II–VI (ZnSe, CdSe) and SiC semiconductor compounds. The resulting morphologies are discussed, including ...
  • Porous Semiconductor Compounds with Engineered Morphology as a Platform for Various Applications 
    MONAICO, Eduard V.; MONAICO, Elena I.; URSAKI, Veaceslav V.; TIGINYANU, Ion M. (Wiley-VCH GmbH, Weinheim, 2023)
    Porous semiconductor compounds represent a class of materials which is under an intense research focus over the last years. Herein, morphologies and topologies produced by anodization in binary semiconductor compounds ...
  • Possibilities of using soy proteine isolate for the packaging of Juglans Regia l. Nuts 
    BOIŞTEAN, Alina; CHIRSANOVA, Aurica (Institutul de Microbiologie şi Biotehnologie, 2018)
    The walnut has gained popularity because of its specific attractive organoleptic properties and high levels of essential fatty acids and bioactive components such as antioxidants. Walnut production is widely distributed ...
  • Possibilities to increase the energy efficiency of buildings 
    TIRSU, Mihai; POSTORONCA, Sveatoslav; MARTNOS, Ion (Academia de Studii Economice din Moldova, 2016)
    In the paper the solutions how to decrease the energy consumption for the most common types of buildings in urban areas of The Republic of Moldova using the modern practice of improving energy efficiency are shown. Here ...
  • Possible coherent backscattering of lightwaves from a strongly absorbing nanoporous medium 
    GAPONENKO, Sergey V.; MONAICO, Eduard; SERGENTU, Vladimir V.; PRISLOPSKI, Sergey Ya.; TIGINYANU, Ion M. (IOP Publishing, 2018)
    We report on anomalous light retroreflection from strongly absorbing nanoporous semiconductor materials, GaAs and InP, with strongly polarized retroreflected light with linear polarization coinciding with that of incident ...
  • Post-embryonic changes in the rabbit reproductive system 
    DIDORUC, S. (Національна Академія Аграрних Наук України, 2022)
    Goal. The purpose of the study is to assess the optimal age when using rabbits in reproduction on the basis of morphometric analysis of segments of the reproductive system.
  • Post-spinel transformations and equation of state in ZnGa2O4: Determination at high pressure by in situ x-ray diffraction 
    ERRANDONEA, D.; KUMAR, Ravhi S.; MANJÓN, F. J.; URSAKI, V. V.; RUSU, E. V. (American Physical Society, 2009)
    Room temperature angle-dispersive x-ray diffraction measurements on spinel ZnGa2O4 up to 56 GPa show evidence of two structural phase transformations. At 31.2 GPa, ZnGa2O4 undergoes a transition from the cubic spinel ...
  • A posteriori error analysis for elliptic variational inequalities of the second kind 
    BOSTAN, V.; HAN, W.; REDDY, B. D. (Elsevier, 2003)
    This chapter derives the posteriori error estimates for the finite element approximation of elliptic variational inequalities of the second kind, by using the duality theory in convex analysis. An example in which the ...
  • A posteriori error analysis for finite element solutions of a frictional contact problem 
    BOSTAN, Viorel; HAN, Weimin (Elsevier, 2006)
    In this paper, we derive and analyze a residual type a posteriori error estimator for finite element approximations of a frictional contact problem for linearized elastic materials. The reliability of the estimator is ...
  • A posteriori error estimation and adaptive solution of elliptic variational inequalities of the second kind 
    BOSTAN, Viorel; HAN, Weimin; REDDY, B. D. (Elsevier, 2005)
    In this paper, we perform an a posteriori error analysis for adaptive finite element solutions of elliptic variational inequalities of the second kind. A general framework for a posteriori error estimates is established ...
  • Potential application of Hrippophae Rhamnoides in wheat bread production 
    GHENDOV-MOŞANU, Aliona; CRISTEA, Elena; PATRAȘ, Antoanela; STURZA, Rodica; PĂDUREANU, Silvica; DESEATNICOVA, Olga; TURCULEȚ, Nadejda; BOEŞTEAN, Olga; NICULAUA, Marius (MDPI, 2020)
    Sea buckthorn (Hippophae rhamnoides) berries are well known for their content in bioactive compounds, high acidity, bright yellow color, pleasant taste and odor, thus their addition in a basic food such as bread could ...
  • Potențialul formativ al educației muzeale valorificat în instituțiile de învățământ superior 
    FILIPSKI, Tatiana (Universitatea Liberă Internaţională din Moldova, 2021)
    The following article represents a theoretical and practical study which emphasizes the importance of formative potential of museum education, which contributes to improvement of moral, cultural, civic and professional ...
  • Power losses estimation in precessional gear 
    BOSTAN, Ion; DULGHERU, Valeriu; BODNARIUC, Ion (ICTCM – CITAf - OID.ICM, 2007)
    The planetary precessional transmissions represent a new principled type of the mechanical transmission. The specific of the relative sphere-spatial movement of the precessional gearing elements makes the sliding friction ...
  • Power Quality and Electromagnetic Interference in a Trolleybus Traction Sistem 
    NUCA, Iurie; NUCA, Ilie; NICOLAE, Petre-Marian; MOTROI, Alexandr; ESANU, Vitalie (IEEE, 2020)
    This paper presents an analysis of the power quality impact and electromagnetic interference in a trolleybus traction system. As test subject it is used a 180 kW induction motor supplied by a three phased inverter with ...
  • Power quality indices of six–phase asynchronous motor drive prototype 
    NUCA, Iurie; NUCA, Ilie; TODOS, Petru; CAZAC, Vadim; KOSTIC, Dusan (University Politehnica Timisoara, 2022)
    The multiphase electric drives are of interest in fields where reliability and higher torque are guiding criteria, especially important in electric traction. In this paper a six–phased asynchronous machine electric drive ...

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