Articole ştiinţifice: Recent submissions

  • Increasing the Efficiency of the Drying Process of Fruits Treated Using SHF Method 
    POPESCU, V.; TIRSU, M.; VISHANU, V.; BALAN, M.; MELENCHUK, M.; ȚISLINSCAIA, N. (Institutul de Energetică al Universităţii Tehnice a Moldovei, 2022)
    The aim of this work is to increase the efficiency of the fruit drying process with the SHF treatment in a uniform rectilinear movement. In order to achieve the purpose of the work, an experimental installation for fruit ...
  • Balancing Properties of the Booster Transformer with the Longitudinal-Transverse Regulation 
    ZAITSEV, D.; GOLUB, I.; TIRSU, M.; CALOSHIN, D. (Institutul de Energetică al Universităţii Tehnice a Moldovei, 2023)
    The current development of the power industry involves various kinds of FACTS, being element of the Smart Grid and controlled by power electronics used for increasing the flexibility of electrical networks. Thus, the ...
  • Bivalent Carbon Dioxide Heat Pump for Heating Multi-Storey Buildings 
    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 ...
  • Basic Aspects of the Theoretical and Practical Relevance of the Method of Synchronous Multi-Zone PWM for Power Inverters 
    OLESCHUK, Valentin; TIRSU, Mihai (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    This paper briefly reviews the development and widespread use of an alternative method of synchronous multi-zone pulse width modulation (SMZ PWM), based on a non-standard time-domain-oriented space vector approach, for the ...
  • Indicii de calitate a conservelor de tomate marinate cu acidifiant din mere 
    CRUCIRESCU, Diana (Universitatea de Stat "Bogdan Petriceicu Hasdeu" din Cahul, 2022)
    Legumele sunt alimente sănătoase și foarte hrănitoare, dar perisabile, cu un termen de valabilitate foarte scurt. Conservarea acestora ne permite consumul lor pe parcursul anului. Actualmente, o problemă majoră pentru ...
  • Optical properties of TlGaSe2 crystals 
    TIRON, A. V. (Universitatea Academiei de Ştiinţe a Moldovei, 2015)
    TIGaSe2 semiconductors crystallize as a layered structure and have monoclinic lattice. One of the features of these crystals is a strong anisotropy of physical characteristics due to the specificity of the crystal structure. ...
  • Excitonic spectra and energy band structure of ZnAl2Se4 crystals 
    SYRBU, N. N.; ZALAMAI, V. V.; TIRON, A. V.; TIGINYANU, I. M. (Elsevier, 2015)
    Absorption, reflection and wavelength modulated reflection spectra were investigated in ZnAl2Se4 crystals. The energy positions of ground and excited states for three excitonic series (А, В and С) were determined. The main ...
  • Excitonic spectra of TlGaSe2 crystals 
    SYRBU, N. N.; ZALAMAI, V. V.; BEJAN, N. P.; TIRON, A. V. (Editura Academiei Romane, 2015)
    The indirect transitions in excitonic region with phonons emission in absorption spectra of TlGaSe2 crystals and ground and excited states of four excitonic series A, B, C and D were observed. The parameters of excitons ...
  • The interference of birefractive waves in ZnAl2Se4:Co2+ crystal 
    SYRBU, N. N.; ZALAMAI, V. V.; TIRON, A.; TIGINYANU, I. M. (Elsevier, 2016)
    The anisotropy of reflection, transmission and wavelength modulated reflection and transmission optical spectra of ZnAl2Se4 crystals doped by cobalt were investigated at 10 and 300 K. Intersections of refractive indices ...
  • Optical properties and birefringence of ZnIn2S4 layered crystals 
    STAMOV, I. G.; ZALAMAI, V. V.; SYRBU, N. N.; TIRON, A. V. (Elsevier, 2020)
    Interference spectra of layered ZnIn2S4 crystals were investigated for samples of different thicknesses (7.5–900 μm). Spectral dependences of refractive indices (na and nb) for light waves with different polarizations were ...
  • Activitatea antioxidantă a preparatului etanolic în baza biomasei de Porphyridium cruentum 
    SADOVNIC, Daniela; CEPOI, Liliana; RUDI, Ludmila; VALUŢA, Ana; CHIRIAC, Tatiana; CODREANU, Svetlana; MISCU, Vera; COJOCARI, Angela (Moldova State University, 2014)
    There was studied the impact of antioxidant complex from microalga Porphyridium cruentum biomass on the antioxidant activity of vegetable oils and their oxidation process. The antioxidant complex was obtained by extracting ...
  • Noi premixuri furajere în baza biomasei de spirulină cu selen 
    RUDIC, Valeriu; DJUR, Svetlana; CEPOI, Liliana; CHIRIAC, Tatiana; RUDI, Ludmila; CODREANU, Svetlana; GHELBET, Viorica (Moldova State University, 2014)
    There have been proposed the recipes for preparing two feed premixes with organic selenium according to the source of inorganic selenium used: “Spirulina with organic selenium 1 and 2” and “protein feed premix with organic ...
  • Statutul antioxidant în corelare cu componenţa biochimică a biomasei unor microalge în condiţii de tehnologii intensive 
    CEPOI, Liliana (Moldova State University, 2014)
    The coordination compounds of Fe (III) with Schiff bases cause the Porphyridium cruentum biomass reduction and Haematococcus pluvialis biomass increasing in case of application of the mentioned compounds in an amount of ...
  • Antioxidant activity of spirulina biomass at the action of some pegilated nanoparticles 
    RUDI, L.; CEPOI, L.; CHIRIAC, T.; ROTARI, I.; PLÂNGĂU, E.; VALUTA, A.; CARAUȘ, V.; RUDIC, V. (Universitatea de Stat din Moldova, 2019)
    Altering the antioxidant activity of spirulina biomass, in the direction of increase or reduction, is the result of toxic action of xenobiotics on spirulina culture. High concentrations of xenobiotics reduce the antioxidant ...
  • Biochemical and morphological changes in spirulina during selenium nanoparticle biosynthesis 
    CEPOI, Liliana; TAȘCA, Ion (Universitatea de Stat din Moldova, 2019)
    Selenium is a trace element strictly necessary to ensure normal metabolism in the human body. There are currently 25 known selenoproteins, all of which are involved in metabolic processes aimed at preventing and fighting ...
  • Copper compounds as stress factors and regulators in phycobiotechnology 
    CEPOI, Liliana (Universitatea de Stat din Moldova, 2022)
    Microalgae and cyanobacteria, especially freshwater ones, in their natural environment are deficient in essential metals and have effective mechanisms for their capture and active transport into cells. Under technological ...
  • Red microalgae Porphyridium cruentum – marker of nanoparticle toxicity 
    CEPOI, Liliana; RUDI, Ludmila; CHIRIAC, Tatiana; MISCU, Vera; GHELBET, Viorica; GUŢU, Tatiana; SADOVNIC, Daniela; RUDIC, Valeriu (Academy of Sciences of Moldova, Institute of Zoology, 2013)
    Currently several species of microalgae (Chlamydomonas reinhardtii, Euglena gracilis, Chlorella vulgaris, Scenedesmul sp. etc.) are used as models for establishing different types of nanomaterials toxicity. The method of ...
  • Correlation dependencies in carotenoid accumulation troughout life cycle of green alga Haematococcus pluvialis 
    MISCU, V.; RUDI, L.; CEPOI, L.; CODREANU, S. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2014)
    In this study, there has been determined correlation between ABTS values and content of carotenoids, as major components in the ethanolic extracts from green alga Haematococcus pluvialis biomass collected throughout life cycle.
  • The role of carotenoids in suppression of oxigen reactive species in red alga Porphiridium Cruentum 
    MISCU, V.; RUDI, L.; CEPOI, L.; CODREANU, S.; GHELBET, V.; IAȚCO, Iu.; RUDIC, V. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2014)
    Reaction of any living organisms, including the unicellular in case of xenobiotic interventions and life conditions modification is expressed in modifying of antioxidant status, which tends to maintain homeostasis and ...
  • Phylogenetical approach for the search of valuable metabolic products in cyanobacteria 
    CEPOI, Liliana; GOLAN, Jacob; GRYGANSKYI, Andrii P. (Academia de Ştiinţe a Republicii Moldova, Institutul de Microbiologie şi Biotehnologie, 2015)
    We propose using a phylogenetic approach to detect strains of potential value for the production of various secondary metabolites. Existing phylogenetic methods lack precision and only make use of rDNA or single gene ...

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