Browsing Articole ştiinţifice by Title

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  • TIGINYANU, Ion (Academica Greifswald, 2017)
    GaN and ZnO are wide band gap semiconductor compounds with unique properties favourable for the development of short-wavelength light emitting devices and high-power electronics. From the point of view of applications, ...
  • POPA, V.; TIGINYANU, I. M.; URSAKI, V. V.; VOLCIUS, O.; MORKOÇ, H. (IOP Publishing, 2006)
    We demonstrate that photoelectrochemical (PEC) etching of GaN layers in KOH or H3PO4 solutions leads to the formation of specific surface morphologies which cause the material to exhibit different sensitivities to certain ...
  • ALBU, Sergiu; MONAICO, Eduard; TIGINYANU, I. M.; URSAKI, V. V. (Institutul de Fizică Aplicată, AŞM, 2006)
    The interest in nanometer-scale materials and devices stimulated the development of alternative technologies in recent years. Metal nanowires are one of the most attractive materials because of their unique properties ...
  • TSIULYANU, D.; MARIAN, S.; MOCREAC, O. (Institutul de Fizică Aplicată al AŞM, 2012)
    In this paper, the change of work function ( Δφ ) of the tellurium thin films was studied in response to different concentrations of nitrogen dioxide, carbon oxide, ozone and water vapor using a KP with a gold grid reference ...
  • TSIULYANU, D.; MARIAN, S.; MOCREAC, O. (Academy of Sciences of Moldova, 2012)
    The sensing behavior of tellurium films at room temperature was tested with environmental pollutant gases, such as NO2, CO, O3, and water vapor, using the Kelvin probe technique. A significant sensitivity was observed for ...
  • TSIULYANU, Dumitru (Beilstein Institute for the Advancement of Chemical Sciences (Germany), 2020)
    Nanocrystalline and amorphous nanostructured tellurium (Te) thin films were grown and their gas-sensing properties were investigated at different operating temperatures with respect to scanning electron microscopy and X-ray ...
  • CAPITAN, Olga (Institutul de Energetică al Academiei de Științe a Moldovei, 2016)
    In this paper, there has been determined the regional biogas and syngas potential and the electric power that could be installed. As raw materials, applicable in this field, was considered animal waste, industrial waste, ...
  • GHERMAN, Cristina; ŞVEŢ, Olga; ARSENI, Lucia (Institutul de Energetică al Academiei de Științe a Moldovei, 2012)
    În lucrarea dată a fost determinat costul singazului produs din paie şi chips-uri la diferite capacităţi ale gazificatorului, în condiţiile Republicii Moldova. Pentru acesta, au fost determinate ratele de creştere ale ...
  • BURLACU, Natalia (Bucharest University Press, 2019)
    The present material contains an analytical framework regarding the concept of algorithmic thinking (AT): semantics, the area of use, the training mode, the imperatives of developing and implementing of the cognitive skills ...
  • RARU, Aliona; FLOREA-BURDUJA, Elena; IROVAN, Marcela; FARÎMA, Daniela (Editura Universităţii din Oradea, 2020)
    This paperwork analyses the synthesis of literature regarding functional textiles. The actuality of the theme is determined by the overwhelming specialists' interest upon the solution to the problem of elaboration of new ...
  • JITARI, Liliana (Scientific Research Publishing Inc., 2021)
    This article analyzes the efficiency of the administration, as well as the way of financing the cultural heritage of the Republic of Moldova through the prism of the legal, institutional and cultural policy framework. ...
  • COJUHARI, E. P.; GARDNER, B. J. (Australian Mathematical Publishing Association Inc., 2012)
    A type of generalized higher derivation consisting of a collection of self-mappings of a ring associated with a monoid, and here called a D-structure, is studied. Such structures were previously used to define various kinds ...
  • COJOCARI, Oleg; HARTNAGEL, Hans L. (American Vacuum Society, 2006)
    A modified model of the Schottky interface is proposed, which includes a near-surface layer (NSL) in the depletion region of the semiconductor. An important effect of the NSL is the ability to make the value of the Schottky ...
  • TRIFAN, Nicolae (Universitatea de Stat „Alecu Russo" din Bălţi, 2016)
    The purpose of this paper is to investigate a method to manufacture gears with variable convex - concave profile of precessional gear teeth by plastic deformation with precessional tool and determine the speed of deformation.
  • ANDRIESH, A. M.; ENAKI, N. A.; KOROLI, V. I.; CULEAC, I. P.; CIORNEA, V. I. (National Institute of Optoelectronics, Romania, 2000)
    We study the cooperative generation of phonon pulses in semiconductors by groups of inverted equidistant multilevel coupled excitations (electrons, excitons). Such equidistant systems take place in chalcogenide glasses ...
  • TRIFAN, N.; CIOBANU, R.; CIOBANU, O. (IOP Publishing, 2021)
    The correct choice of the dimensions of the workpiece product is one of the main problems, the solution of which depends on the reduction of the consumption of materials and energy, as well as the quality of the wheels ...
  • BOSTAN, I.; DULGHERU, V.; TRIFAN, N. (IOP Publishing, 2018)
    The paper presents a method for obtaining the teeth of the precessional gear by plastic deformation. There are analyzed the basic problems that must be resolved to apply this process: determination of dimensions of initial ...
  • ZINICOVSCAIA, Inga; DULIU, Octavian G.; CULICOV, Otilia Ana; STURZA, Rodica; BILICI, Constantin; GUNDORINA, Svetlana (Springer Nature Switzerland, 2017)
    To get more data regarding the elemental transfer from soil to wine, the neutron activation analysis was used to determine 35 elements in vineyard chernozem soil and 18 elements in wines from Romanesti and Cricova, Republic ...
  • OPRIŞ, D.; ALBU, I. D. (Springer Nature Switzerland, 1998)
    We present some geometrical aspects of a higher-order jet bundle which is considered a suitable framework for the study of higher-order dynamics in continuous media. We generalize some results obtained by A. Vondra, [7]. ...
  • CEBOTARU, Elena (SCREAM, 2019)
    The eight-body Newtonian problem is studied. Applying the symbolic calculation system Mathematica the stationary solutions, their stability in numerical form and the geometric characteristics of the stability domain are studied.

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