Articole din publicaţii internaţionale: Recent submissions

Now showing items 1281-1300 of 3213

Mechanical properties of polycrystalline copper and single-crystal LiF initial components for composite system Cu/LiF

GRABCO, D. Z.; PYRTSAC, K. M.; SHIKIMAKA, O. A. (Institutul de Fizică Aplicată al AŞM, 2016)

The paper deals with an investigation of mechanical properties and deformation features of polycrystalline copper and single-crystal LiF under dynamic nano/microindentation. It is shown that the values of hardness and ...
Mechanical properties of one-dimensional coordination polymer [Cu(adi)(4-pyao)2]n

CROITOR, L.; COROPCEANU, E. B.; GRABCO, D. Z.; PYRTSAC, C.; FONARI, M. S. (Institutul de Fizică Aplicată al AŞM, 2014)

Blue block crystals of title compound, [Cu(adi)(4-pyao)2]n 1 were obtained by blending the solution of copper (II) fluoride with 4-pyridine-aldoxime (4-pyao) and adipic acid (H2adi). X-ray single crystal structure analysis ...
Loading rate dependent relaxation under indentation of borophosphate glass

SHIKIMAKA, O.; PYRTSAC, C.; BARBOS, Z.; SAVA, B. A.; BOROICA, L.; ELISA, M. (Institutul de Fizică Aplicată al AŞM, 2018)

The plasticity of glasses under compressive and shear stresses is governed by 2 main mechanisms: densification and shear flow. The relative contribution of each of these mechanisms depends on the glass structure and its ...
Influence of the Loading Regime of Indentation on the Hardness of Phosphate Glass

POPA, Mihaela; SHIKIMAKA, Olga; GRABCO, Daria; SAVA, Bogdan A.; BOROICA, Lucica; ELISA, Mihail; PYRTSAC, Constantin; PRISACARU, Adrian (Institutul de Fizică Aplicată al AŞM, 2017)

In this study a new composition of phosphate glass (56,66LiPO3 28,33Al(PO3)3-10Ba(PO3)2-2La2O3-3RE2O3 (RE = Dy, Tb)) obtained by sol-gel method is investigated from the point of view of mechanical behavior. For this purpose ...
Indium-tin-oxide thin film strain-sensor behaviors study using cyclic indentation

HAREA, E. E.; AIFANTIS, K. E.; PYRTSAC, K. M.; POPA, M. N.; GHIMPU, L. (Institutul de Fizică Aplicată al AŞM, 2014)

ITO films based sensors are largely studied last two decades. Piezoelectric properties were investigated depending on parameters and suitable manufacturing methods, ITO film thickness, thermal treatment etc. They belong ...
Indentation and plastic properties of MgO single crystals in nano and submicrovolumes

GRABCO, D. Z.; PYRTSAC, C. M. (Institutul de Fizică Aplicată al AŞM, 2016)

The strength and plastic properties of MgO single crystals have been thoroughly studied in microvolumes [1–3]. However, it has been proved on various materials that a reduction in the characteristic dimensions of an object ...
Hardness of the Cu thin films grown on the MgO substrate

GRABCO, D.; PYRTSAC, C.; GHIMPU, L. (Institutul de Fizică Aplicată al AŞM, 2014)

In this paper we studied the mechanical propeties of Cu thin films grown on MgO ( 4) substrate. The Cu films were obtained by the method of magnetron sputtering (with Magnetron Sputtering RF) at room temperature with ...
Giant quantum oscillations of the magnetothermoelectric coefficient in semimetallic Sb-Bi and Sb-As alloys

MUNTYANU, F. M.; PYRTSAK, K. M.; GILEVSKI, A. (Springer Nature Switzerland, 2001)

Quantum oscillations of the magnetothermoelectric coefficient αii(B) are investigated in semimetallic Sb-Bi and Sb-As alloys in stationary magnetic fields up to 15 T and at temperatures from 1.9 to 30 K. Quantum oscillations ...
Гигантские квантовые осцилляции магнитотермоэдс в полуметаллических сплавах Sb с Bi и As

МУНТЯНУ, Ф. М.; ПЫРЦАК, К. М.; ГИЛЕВСКИ, А. (Российская академия наук, 2001)

Исследованы особенности квантовых осцилляций в магнитотермоэдс α ii(В) в полуметаллических сплавах Sb с Bi и As в стационарных магнитных полях до 15Т и при температурах 1.9-30К. При ориентации продольного или поперечного ...
Fracture toughness and hardness at micro- and nanoindentation of phosphate glasses depending on their composition

POPA, M.; SHIKIMAKA, O.; GRABCO, D.; SAVA, B. A.; BOROICA, L.; ELISA, M.; PYRTSAC, C.; BARBOS, Z.; BELEI, I. (Institutul de Fizică Aplicată al AŞM, 2016)

Two groups of glasses of a basic aluminophosphate (Al2O3–P2O5–Li2O–BaO–La2O3) composition (APG) doped with Dy2O3, Tb2O3 and Fe2O3, and borophosphate (B2O3–P2O5–Li2O–Al2O3–ZnO) composition (BPG) codoped with Dy2O3–Tb2O3, ...
Effects of Anion and Bipyridyl Bridging Ligand Identity on the Co(II) Coordination Networks

CROITOR, Lilia; COROPCEANU, Eduard B.; CHISCA, Diana; BACA, Svetlana G.; LEUSEN van, Jan; KÖGERLER, Paul; BOUROSH, Polina; KRAVTSOV, Victor Ch.; GRABCO, Daria; PYRTSAC, Constantin; FONARI, Marina S. (American Chemical Society, 2014)

Five new coordination polymers, {[Co(OAc)2(bpe)(H2O)]•0.5(dmf)}n (1), {[Co(bpy)2(H2O)4][Co(tfa)(bpy)2(H2O)3](tfa)3•1.5(bpy)}n (2), [Co(tfa)2(dps)4]n (3), {[Co(tfa)2(bpe)4]•H2O}n (4), and [Co(tfa)2(bpp)4]n (5) (where AcO– ...
Densification contribution as a function of strain rate under indentation of terbium-doped aluminophosphate glass

SHIKIMAKA, Olga; GRABCO, Daria; SAVA, Bogdan Alexandru; ELISA, Mihail; BOROICA, Lucica; HAREA, Evghenii; PYRTSAC, Constantin; PRISACARU, Andrian; BARBOS, Zinaida (Springer Nature Switzerland, 2016)

In this work, the strain rate effect on the deformation processes under Berkovich indentation of Tb-doped aluminophosphate glass has been investigated. It is shown that both densification and shear flow, adopted as main ...
Cyclic Nanoindentation for Examination of the Piezoresistivity and the Strain-Sensor Behavior of Indium-Tin-Oxide Thin Films

HAREA, E. E.; AIFANTIS, K. E.; PYRTSAC, K. M.; GHIMPU, L. (Springer Nature Switzerland, 2015)

The piezoresistivity of indium-tin-oxide (ITO) thin films was investigated using the three point bending method combined with cyclic indentation. The 500 nm thick ITO films were deposited on glass slides using magnetron ...
Visualitation of undulatory mass transfer in nearsurface vicinity of indentation contact zone

GRABCO, D.; SHIKIMAKA, O.; HAREA, E.; PYRTSAC, C. (Institutul de Fizică Aplicată al AŞM, 2010)

Deformation regularities of crystals, films and coated systems assume ever greater importance in recent years. Particularly, it concerns the micro- and nanoindentation processes because of their large practical application. ...
Mechanical properties of ternary Yb compound YbZn2Sb2

GRABCO, D.; NATEPROV, A.; PYRTSAC, C.; DANITSA, Z. (Institutul de Fizică Aplicată, 2010)

The ternary Yb compound YbZn2Sb2 belongs to the typical diamagnetic semimetal. Its electrical and agnetic properties are studied in series of papers. However the mechanical characteristics of this compound remain undefined. ...
Application of acoustic emission technique for the evaluation of micromechanical properties of steel

GRABCO, D. Z.; SHIKIMAKA, O. A.; PYRTSAC, C. M.; PRISACARU, A. A.; ALEXANDROV, S. E. (Institutul de Fizică Aplicată al AŞM, 2018)

Acoustic emission (AE) is the propagation of elastic waves by a material, caused by a dynamic local restructuring of its structure. According to modern physical concepts, AE, which occurs when indenting solids, is associated ...
The influence of the real property cadastre on sustainable rural development

BUZU, O. (Universitatea Agrară de Stat din Moldova, 2018)

Development of rural areas is an important target for research and applied action in many countries of the world. Contrary to the liberal theory, which is very popular in the post-socialist and post-Soviet Union states and ...
Real Property Assessment and Taxation in the Republic of Moldova

BUZU, Olga; McCLUSKEY, William J.; RIEL, Franzsen C. D. (International Association of Assessing Officers and the International Property Tax Institute, 2012)

Many of the countries in Central and South East Europe that were part of the former Soviet Bloc still retain area-based property tax systems. This article describes the successful property tax reform implemented in Moldova ...
Public Purpose Investments in Voivodeship Spatial Development Plans as an Expression of Regional Spatial Policy

BLASZKE, Małgorzata; RĄCKA, Izabela; NOWAK, Maciej; BUZU, Olga (Fundacja Uniwersytetu Ekonomicznego w Krakowie, 2019)

Purpose: Defining possible ways to verify and evaluate voivodeship spatial development plans as key spatial policy tools at the voivodeship level. Methods: The content of all voivodeship spatial development plans was ...
Evaluarea în contextul reformei contabile

BUZU, Olga; PEDINA, Llilia (Universitatea de Stat ”Bogdan Petriceicu Haşdeu” din Cahul, 2015)

The paper describes one of the important issues in the application of the International Standards of Financial Reporting – the valuation of enterprises assets according to their fair value. The aim of the paper is to explore ...

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