Articole din publicaţii internaţionale: Recent submissions

Now showing items 1901-1920 of 3216

Analytical description of precessional nonstandard tooth profile

BOSTAN, I.; DULGHERU, V. (Transilvania University Press, Brasov, Romania, 2016)

The engineering complex study of the triad “gear-technology transmission” has permitted to elaborate a new type of mechanical transmission – planetary precessional transmissions with multicouple gear. In this paper, the ...
A helical turbine system for wind and hydraulic energy recovery

BOSTAN, Ion; DULGHERU, Valeriu; CIUPERCA, Radu (Universitatea "Constantin Brâncuşi", Târgu-Jiu, 2009)

The engineering complex study of the triad “gear-technology-transmission” has permitted to The main objective of this work is to elaborate and investigate the conversion devices for non-conventional energies (wind and ...
Тонкопленочные солнечные элементы с двусторонней чувствительностью на гетероструктурах (Al, Ga)As

АНДРЕЕВ, В. М.; ВИЕРУ, Т. С.; ДОРОГАН, В. В.; ТРОФИМ, В. Г. (Ioffe Institute, RAS, 1989)

В настоящей работе приводятся результаты исследования тонкопленочных солнечных элементов (ТСЭ) с двусторонней чувствительностью на основе гетероструктур (Al, Ga) As площадью 2 см2.
Тонкопленочные солнечные элементы (ТСЭ) на гетеропереходах (Al, Ga)As

БРЫНЗАРЬ, В. И.; ДОРОГАН, В. В.; ИВАНОВ, М. Б.; ТРОФИМ, В. Г.; ЧУМАК, В. А.; ЧЕБАН, Л. И. (Ioffe Institute, RAS, 1984)

В настоящей работе исследованы некоторые свойства ТСЭ рAlxGa1-xAs-nGaAs отделенных от подложек GaAs, и рассмотрены возможности их применения в составе каскадных солнечных элементов (КСЭ) с использованием Si СЭ в качестве ...
Liquid-phase epitaxy of AlGaAs heterostructures on profiled substrates

ANDREYEV, V. M.; EGOROV, V. V.; SYRBU, A. V.; TROFIM, V. G.; YAKOVLEV, V. P. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 1980)

A method of fabrication of planar local structures using the selective epitaxial growth of GaAs and AIGaAs layers from liquid phase on profiled GaAs substrates was developed. The planar regrowth of the recesses formed in ...
Излучательные свойства эпитаксиальных слоев GaAs, отделенных от подложки

ДОРОГАН, В. В.; НЕГРЕСКУЛ, В. В.; ТРОФИМ, В. Г.; ЧУМАК, В. А. (Ioffe Institute, RAS, 1985)

Задачей настоящей работы являлось исследование излучательных свойств нелегированных и легированных Zn, Sn, Ge и Si слоев GaAs после их отделения о т несущей подложки, а также установление влияния промежуточного слоя ...
Катодный эффект электростимулированных химически х превращений в структурах металл-халькогенидны й стеклообразный полупроводник

ЦИУЛЯНУ, Д. И.; ЧУМАКОВ, И. С.; ГРИНШПУН, Л. Б. (Физико-технический институт им. А. Ф. Иоффе Российской академии наук, 1983)

В настоящей работе представлены результаты исследования необратимых изменений оптических свойств тонкослойных структур металл—ХСП в электрических полях, превышающих по напряженности в 10—100 раз поля, используемые ранее ...
Work function and AC operating gas-sensitive films based on quaternary chalcogenides

TSIULYANU, D.; CIOBANU, M.; LIESS, H.-D. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2016)

A study of quaternary alloys of As–S–Ge–Te was performed in order to assess their use in future gas sensors operating at room temperature. To elucidate the effect of tellurium, the quaternary compositions As2Te13Ge8S3 and ...
Tellurium Thin Films in Sensor Technology

TSIULYANU, D. (Springer Nature Switzerland, 2011)

An extensive review of the application of tellurium thin films in sensor technology is reported and discussed. Along with the traditional use of Te films in photo and strain sensitive devices, their modern application in ...
Surface Phenomena in Glassy Chalcogenides by Gas Sensing

TSIULYANU, D.; CIOBANU, M.; MOCREAC, O. (Springer Nature Switzerland, 2020)

The surface phenomena in glassy chalcogenides (GCh), including those caused by gas adsorption, are reviewed and discussed. A detailed quantitative analysis is made on experimental data taken on glassy and nanocrystalline ...
Sensing properties of tellurium based thin films to propylamine and carbon oxide

TSIULYANU, D.; MARIAN, S.; LIESS, H.-D. (Elsevier, 2002)

The effect of propylamine (C3H7NH2) and carbon oxide on electrical conductivity of tellurium based thin films has been investigated. It is shown that the absorption of the propylamine vapor leads to reversible increase of ...
Sensing Properties of Tellurium Based Thin Films to Oxygen, Nitrogen and Water Vapour

TSIULYANU, D.; STRATAN, I.; TSIULYANU, A.; EISELE, I. (IEEE, 2006)

Effect of O2 , N2 and H2O to electrical behaviour of tellurium-based films has been studied at temperatures between 20 degC and 70 degC. The increase of oxygen partial pressure in NO2 + O2 carrier gas results in a nearly ...
Sensing properties of tellurium based films to propylamine

TSIULYANU, D.; MARIAN, S.; MIRON, V.; LIESS, H.-D. (IEEE, 2001)

The effect of propylamine (C/sub 3/H/sub 7/NH/sub 2/) on electrical conductivity of tellurium based thin films has been investigated. It is shown that the absorption of the propylamine vapor leads to reversible increase ...
Room temperature a.c. operating gas sensors based on quaternary chalcogenides

TSIULYANU, D.; CIOBANU, M. (Elsevier, 2016)

Impedance spectra of quaternary As–Ge–S–Te based alloys were investigated in both dry synthetic air and mixture with nitrogen dioxide in order to assess the use of these materials in future gas sensors working at room ...
Remarks on the nature of Urbach absorption tail in glassy semiconductors

TSIULYANU, D. I.; MARIAN, S. I. (IEEE, 1995)

Exponential absorption edge of chalcogenide glassy alloys with sulfur content in the region of the topological transition is studied. It is shown that the slope of the tail (1//spl Delta/) depends on the mean coordination ...
Development of Strategic Directions of Road Transport for the Republic of Moldova in the Context of European Union

GOROBIEVSCHI, Svetlana; MUNTEANU, Diana (Universitatea „Ovidius”, Constanţa, 2020)

The key principles underlying the acquis communautaire in the field of transport identify the progress made and the delays that the Republic of Moldova still has in terms of convergence towards European transport standards. ...
Creşterea calităţii transportului în Republica Moldova prin utilizarea unui sistem inteligent de monitorizare a traficului rutier

GOROBIEVSCHI, Svetlana; MUNTEANU, Diana (“Gheorghe Zane” Institute for Economic and Social Research, Iaşi, 2020)

Economic development is closely linked to the possibilities of transporting the products of economic activities and the formation of ever closer relations between different economic entities at different stages of economic ...
Impactul informatizării asupra dezvoltării turismului şi a creşterii economice

GOROBIEVSCHI, Svetlana; COLUN, Tatiana (“Gheorghe Zane” Institute for Economic and Social Research, Iaşi, 2020)

In the modern economic sphere, information technology plays an important role. Modern society is under the enormous influence of such information technologies as television, internet, mobile communications, specialized ...
Photoelectric Phenomena in Isotope Vitreous As2S3-Silicon Single-Crystal Heterojunctions

TSIULYANU, D. I.; KOLOMEYKO, E. P.; STAMOV, V. N. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 1987)

In the present note the photoelectrical phenomena in isotype heterojunctions on te basis of single-crystal p-Si and vitreous As2S3 with aluminium or chromium electrodes, were investigated. The electrical properties and the ...
Photoconductivity and optical absorption of dimorphite thin films

TSIULYANU, D.; GOLBAN, G.; KOLOMEYKO, E.; MELNIC, O. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 1996)

Optical absorption and photoconductivity of As4S3 thin films have been studied. The absorption coefficient is shown to be influenced by the technology of film preparation, in particular by growth velocity and substrate ...

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