Articole din publicaţii internaţionale: Recent submissions

Now showing items 2801-2820 of 3223

Nonlinear dynamics of quantum dots lasers under the influence of double cavity external feedback

OLOINIC, T.; RUSU, S.; TRONCIU, S. V. (Academia de Ştiinţe a Moldovei, 2016)

This paper reports results on investigations of the dynamical behavior of a semiconductor laser with quantum dots active medium under the influence of a feedback from double external cavity.
Kinetical Energy of River Running Water

BOSTAN, Ion; GHEORGHE, Adrian; DULGHERU, Valeriu; SOBOR, Ion; BOSTAN, Viorel; SOCHIREAN, Anatolie (Springer Science+Business Media B. V., 2013)

The inevitable increase of global energy consumption and the risk of a major environmental impact and climate change as a result of burning fossil fuels opens wide prospects for the exploitation of renewable energies. ...
Development of a Horizontal Axis Wind Turbine for the Production of Thermal Energy

BOSTAN, Viorel; BOSTAN, Ion; SOBOR, Ion; DULGHERU, Valeriu; GLADIS, Vitalie (Springer International Publishing AG, 2018)

The wind energy conversion systems could play a significant role in the production of mechanical, electrical and thermal energy in the Republic of Moldova, in particular for providing the individual consumer with energy ...
Synthesis and characterization of photosensible CH3NH3PbI3 and CH3NH3PbI3–x Cl x Perovskite Crystalline Films

PLESCO, I.; POSTOLACHE, V.; VOLODINA, G.; ZALAMAI, V.; GHIMPU, L.; TIGINYANU, I. (Springer Nature Switzerland, 2017)

Methylammonium lead-halide perovskites are very promising for applications as solar light-harvesting materials. This paper presents a study on the methylammonium iodide and iodide-chloride perovskite films prepared by spin ...
The impact of high energy ion irradiation upon CO gas sensitivity of nanostructured GaN epilayers

VOLCIUC, O. S.; POPA, V.; TIGINYANU, I. M.; SKURATOV, V. A.; CHO, M.; PAVLIDIS, D. (Springer Nature Switzerland, 2010)

Photoelectrochemically nanostructured GaN epilayers were found to exhibit good sensitivity towards CO in the temperature range from 180 to 280°C. We show that subjection of nanostructured GaN samples to 166 MeV Xe+23 ion ...
Application of surface charge lithography to nanostructuring of GaN epilayers

POPA, V. Iu.; VOLCIUC, O.; TIGINYANU, I. M.; SARUA, A.; HEARD, P. (Springer Nature Switzerland, 2008)

It is shown that treatment of GaN epilayers by a low energy low dose focused ion beam with subsequent photoelectrochemical etching represent an efficient tool for GaN nanostructuring. Direct “writing” of a surface negative ...
Photoelectric structures based on nanoporous p-InP

DIKUSAR, A. I.; BRUK, L. I.; MONAICO, E. V.; SHERBAN, D. A.; SIMASHKEVICH, A. V.; TIGINYANU, I. M. (Springer Nature Switzerland, 2008)

The possibility of nanostructuring of surfaces of indium phosphide with hole conduction is confirmed. The technique of manufacturing and research of SnO2/InP heterostructures with a nanoporous surface at the interface is ...
Outstanding Discovery of the XX-th Century — Lasers: Perspectives of Using for the Big Cities Needs

PROHOROV, A. M.; RADAUTSAN, S.; SYRBU, A.; IAKOVLEV, V. (Springer Science+Business Media Dordrecht, 1997)

A study of laser facets at high optical power density levels resulted in elaboration of a new characterization technique for laser diodes . A new facet coating system based on ZnSe was applied to InGaAsP high power laser ...
Role of the Technical University of Moldova in the Elaboration and the Implementation of Modern Technologies for Cities

BOSTAN, I. (Springer Science+Business Media Dordrecht, 1997)

The world is moving towards the gloaming of the 20th century. We, the people-witnesses of this dramatic century, are seeking for problem-solving strategies in the following matters: what will the next day look like, being ...
Inventions as Promoters of Scientific and Technical Progress

BOSTAN, I.; DULGHERU, V. (Springer Nature B. V., 1997)

The development of society in the XX century brought creativity to the foreground of research. It happened because practically in all fields of activity the social demand for creativity became really urgent. In other words, ...
The Synergy Between Cyber and Nuclear Security. Case Study of Moldova

BUZDUGAN, Aurelian; BUZDUGAN, A. (Springer Nature B. V., 2020)

We will discuss in this paper the regulation which specifies the minimum cyber security requirements across the public institutions [1], which includes as well civil NR operators. We will reflect the current state of cyber ...
Conversion of Renewable Kinetic Energy of Water: Synthesis, Theoretical Modeling, and Experimental Evaluation

BOSTAN, Ion; GHEORGHE, Adrian V.; DULGHERU, Valeriu; BOSTAN, Viorel; SOCHIREANU, Anatol; DICUSARĂ, Ion (Springer Science+Business Media B. V., 2011)

The current paper deals with concepts for conversion of the kinetic energy of fluent water into mechanical and finally electrical energy. A distinct objective is the study of the energetic potential of the Republic of ...
Wind Energy

BOSTAN, Ion; GHEORGHE, Adrian; DULGHERU, Valeriu; SOBOR, Ion; BOSTAN, Viorel; SOCHIREAN, Anatolie (Springer Science+Business Media B. V., 2013)

Wind energy has been used by mankind over thousands of years. For over 3,000 years the windmills have been used for pumping water or grinding (milling). And nowadays, in the century of information technologies, nuclear ...
Symbolic and Numerical Calculation of Transport Integrals for Some Organic Crystals

CASIAN, A.; DUSCIAC, R.; DUSCIAC, V.; PATSIUK, V. (Springer-Verlag Berlin Heidelberg, 2006)

The kinetic integral equation for a quasi-one-dimensional organic crystal is solved exactly, and the expression for the electrical conductivity is presented as a transport integral. The latter has two singularities depending ...
Influence functions, integral formulas, and explicit solutions for thermoelastic spherical wedges

ŞEREMET, Victor; CRETU, Ion (Springer Nature Switzerland, 2013)

In this study, newexact Green’s functions and a newexact Green-type integral formula for a boundary value problem (BVP) in thermoelasticity for some spherical wedges with mixed homogeneous mechanical boundary conditions ...
Valorificarea resurselor regenerabile ale Republicii Moldova în contextul integrării în UE

RUSU, Nicolae; LÎSÎI, Aliona (Academia de Studii Economice din Moldova, 2020)

The problem of using alternative energy sources has been and remains very current both nationally and internationally, especially in the context of depletion of oil reserves, pollution generated by its use, but also the ...
Photosensivity of heterostructures produced by aerosol deposition of ZnMgO thin films on Si substrates

MORARI, Vadim; POSTOLACHE, Vitalie; RUSU, Emil; LEISTNER, Karin; NIELSCH, Kornelius; URSAKI, V. V.; TIGINYANU, I. M. (Universitatea Politehnică din Bucureşti, 2020)

ZnMgO thin films were prepared on Si substrates by aerosol deposition method using zinc acetate and magnesium acetate as precursors. The obtained films were investigated by scanning electron microscopy (SEM), energy ...
Sporirea durabilităţii melcului maşinii de brichetat prin formarea straturilor rezistente la uzură

TOPALĂ, P.; OJEGOV, A.; BEŞLIU, V.; STOICEV, P.; BODNARIUC, I.; PERETEATCU, P. (Universitatea Agrară de Stat din Moldova, 2018)

The paper relates to a process for the hardening of metal surfaces by applying electrospark alloying. The essence of the process consists in formation wear-resistant bi-stratum coatings (tungsten-graphite) on the active ...
Creșterea stabilității termice a polieterpoliolului PETOL 36 3 BO prin nanomodificare cu aluminosilicat stratificat tip montmorillonit (bentonita)

LAURENȚIU, M.; TOPALĂ, P.; STOICEV, P.; PLATON, A. (Universitatea Agrară de Stat din Moldova, 2018)

Polymeric nanocomposites are innovative materials with improved properties over base materials, used in top-of-the-range production areas. Polyurethane nanocomposites are materials that are built on a polyurethane matrix ...
Cogenerarea în sere (Studiu de caz)

GUŢU, Aurel; GUŢU-CHETRUŞCA, Corina (Universitatea Agrară de Stat din Moldova, 2018)

Feasibility studies cogeneration unites installed in a greenhouses have shown the high efficiency of cogeneration compared to boiler installations. The cost of heat is reduced up to 1.5 times. A considerable fuel economy ...

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