Browsing Articole ştiinţifice by Title

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  • LUPAN, O.; CHOW, L.; CHAI, G.; SCHULTE, A.; PARK, S.; LOPATIUK-TIRPAK, O.; CHERNYAK, L.; HEINRICH, H. (ELSEVIER, 2008)
    We have investigated three-dimensional (3-D) architectures–microspheres and radial structures–based on biopolymer-assisted self-assembly from one-dimensional ZnO nanorods. The developed method is simple, rapid and ...
  • CEPOI, Liliana; ZINICOVSCAIA, Inga; VALUTA, Ana; CODREANU, Liviu; RUDI, Ludmila; CHIRIAC, Tatiana; YUSHIN, Nikita; GROZDOV, Dmitrii; PESHKOVA, Alexandra (MDPI (Basel, Switzerland), 2022)
    Anthropogenic activity is the main factor contributing to soil pollution with various toxic metals, including Cr(VI), which dictates the need for decontamination. Often, the traditionally used remediation methods (soil ...
  • ZALAMAI, Victor; SYRBU, Nicolae (Institutul de Fizică Aplicată al AŞM, 2017)
    Double refraction or birefringence is an effect of the light splitting into two components in anisotropic media. If a light ray falls perpendicular to the surface of the crystal, then on this surface it splits into two ...
  • BERIL, S. I.; STAMOV, I. G.; SYRBU, N. N.; ZALAMAI, V. V. (Elservier, 2013)
    The spatial dispersion in CdP2 crystals was investigated. The dispersion is positive (nk||с>nk||у) at λ>λ0 and negative (nk||с<nk||у) at λ<λ0. CdP2 crystals are isotropic for wavelength λо=896nm. Indirect transitions in ...
  • STAMOV, I. G.; SYRBU, N. N.; URSAKI, V. V.; ZALAMAI, V. V. (ELSEVIER, 1999)
    The anisotropy of transmission spectra was investigated in TlGaS2 crystals. An intensive transmission line was found in samples placed between two crossed polarizers. Ground and excited states of excitons were detected in ...
  • STAMOV, I. G.; SYRBU, N. N.; URSAKI, V. V.; ZALAMAI, V. V. (Elservier, 2013)
    The anisotropy of transmission spectra was investigated in TlGaS2 crystals. An intensive transmission line was found in samples placed between two crossed polarizers. Ground and excited states of excitons were detected in ...
  • SYRBU, N.; DOROGAN, A.; DOROGAN, V.; TIRON, A.; ZALAMAI, V. (American Scientific Publishers, 2015)
    Reflection, wavelength modulated reflection and transmission spectra at P, P (S, S) and 45°, 45° (135°, 135°) polarizations for incidence angles close to normal and Brewster one were researched in quantum In0.3Ga0.7As ...
  • NEMERENCO, L.; PARVAN, V.; SYRBU, N.; MASNIC, A. (Institutul de Fizică Aplicată al AŞM, 2012)
    Cadmium thiogallate CdGa2S4 has a coefficient of nonlinear susceptibility is five times greater than the coefficient of nonlinear susceptibility of niobate lithium . The dispersion of birefringence in CdGa2S4 and PbGa2S4 ...
  • SYRBU, N.; DOROGAN, A.; DOROGAN, V.; ZALAMAI, V. (Elservier, 2015)
    The polarization dependences of reflection and wavelength modulated reflection spectra of quantum wells In0.68Al0.1Ga0.13As/In0.42Al0.22Ga0.24As were investigated. Spectral dependences of refractive indices, extinction ...
  • SYRBU, N. N.; ZALAMAI, V.; GUC, M.; LEVCENKO, S.; DOROGAN, A.; ARUSHANOV, E. (Elservier, 2015)
    In Cu2ZnSiSe4 single crystals an interference spectra of the Fabry–Perot type due to observed birefringence were studied and spectral dependence of the refractive index n|| (E||c) and n⊥ (E⊥c), which intersect at isotropic ...
  • SYRBU, N.; DOROGAN, A.; URSAKI, V.; STAMOV, I.; TIGINYANU, I. M. (The Electrochemical Society, 2011)
    Investigation of the spectral characteristics as a function of the crystal thickness demonstrates that one can create filters using thin crystals for selecting several spectral lines. The wavelength of these lines is ...
  • SYRBU, N. N.; DOROGAN, A. V.; MASNIK, A.; URSAKI, V. V. (IOP Publishing, 2011)
    Excitonic reflection spectra of CuAlSe2 crystals were studied at 10 K. The spectral dependences of refractive indices no and ne were calculated. The isotropic wavelength (the point of intersection of no and ne) in the ...
  • ZALAMAI, V. V.; TIRON, A. V.; RUSU, E. V.; SYRBU, N. N. (IOP Publishing, 2019)
    Absorption spectra in temperature range 300–10 K were studied. The minimal band gap A1 (1.091 eV at 300 K) is formed by direct allowed in E∣∣c polarization and forbidden in E∣∣a polarizations transitions. The next interval ...
  • STAMOV, I. G.; SYRBU, N. N.; NEMERENCO, L.; ZALAMAI, V. (Open Science Publishers, 2015)
    Spatial dispersion in ZnP2-D4 8 has been studied. The spectral dependences of the refractive index nс (Е||с, k||a), nа (Е||а, k||с) and nb (E||b, k||c) had been determined. ZnP2-D4 8 crystals are isotropic at λо=612nm ...
  • MAȘNIC, Alisa; URSAKI, Veaceslav (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu", 2021)
    A brief review on birefringence and optical filters based on CuAl/sub x/Ga/sub 1- x/Se(S)/sub 2/ crystals is given in this paper. Two types of isotropic points are analyzed; one of them refers to a case when the wavelength ...
  • PRODAN-ŞESTACOVA, Liubovi (Academia de Administrare Publică, Republica Moldova, 2021)
    The activity of public authorities in the western space during the last two centuries had the characteristics of a classic bureaucracy. A number of principles of this model of organization of administrative structures gave ...
  • TRONCIU, Sergiu (Institutul Patrimoniului Cultural al AŞM, 2012)
    Tipul structural al bisericii „Sf. Andrei” face parte din cel al rotondei (construcţie de zidărie înplan circular, având, deseori, acoperişul în formă de cupolă), caracteristic edificiilor construite la sf. sec. al XVIII-lea ...
  • SIT, M. L.; JURAVLEOV, A. A.; TIRSU, M. S.; TIMCHENKO, D. V.; LUPU, M. L.; DAUD, V. P. (Institutul de Energetică al Universităţii Tehnice a Moldovei, 2023)
    The aim of the work is to analyze the operation of a hybrid heat pump that simultaneously uses the heat of the return network water and outdoor air for heating multi-storey buildings. To achieve this goal, the following ...
  • ADĂSCĂLIŢEI, Adrian; ARĂDOAIEI, Sebastian Teodor; TODOS, Petru Ion; DULGHERU, Valeriu (Technical Sciences Academy of Romania, 2020)
    The article presents a review of the current e-pedagogical methods to develop Electrical and Computer Engineering Education (ECEE) Study Programs using Blended an Learning (BTL). Engineering crucial experimental competences ...
  • ANDRIEVSCHI, Sergiu (Agenţia de Stat pentru Proprietatea Intelectuală a Republicii Moldova, 2006)
    Malaxoarele cu organe de lucru în formă de bare contribuie la intensificarea procesului de amestecare datorită majorării zonei volumetrice de acţionare a barelor asupra materialului, divizării materialului în mai multe ...

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