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Conferinţe: Recent submissions

Now showing items 961-980 of 2187

New Perspective for Biomedical Productions: Application of Cast Amorphous Microwire for Electromagnetic Absorption

BARANOV, S. A. (Tehnica UTM, 2015)

The technological use of high and ultra-high frequencies in medical engineering has led to the need of creating electromagnetic shielding’s. The absorption properties of films made of a parallel array of cobalt based ...
Enhancement of Antioxidant and Antibacterial Activities by Immobilization of Natural Bactericide into Hybrid Supra- molecular Chitosan Bio-composite Gel

GONTA, A.; LUPASCU, T.; POVAR, I.; TIMBALIUC, N.; SUKHANOV, T. E.; PETROVA, V.; SKORIK, I. A. (Tehnica UTM, 2015)

Natural polyphenols are of significant morphological and physiological importance in plants. In particular, natural polyphenols have been reported to possess antioxidant, antibacterial and antifungal properties. However ...
Antimicrobial Reagents as Functional Finishing for Textiles Intended for Biomedical Applications. III. Other Metals and Metallic Compounds

ZANOAGA, M.; TANASA, F. (Tehnica UTM, 2015)

Some metals and metallic compounds are known to exhibit high toxicity at very low concentrations towards a wide variety of microorganisms. This characteristic – the antimicrobial activity – has been used in medicine and ...
Antimicrobial Reagents as Functional Finishing for Textiles Intended for Biomedical Applications. II. Metals and Metallic Compounds: Silver

TANASA, F.; ZANOAGA, M. (Tehnica UTM, 2015)

Silver is known to exhibit strong toxicity towards a wide range of microorganisms and, therefore, it has been intensively and extensively used for bactericide purposes. This article reviews some of the most interesting ...
Nanofibers for Tissue Engineering and Regenerative Medicine

BÖLGEN, N.; VASEASHTA, A. (Tehnica UTM, 2015)

Electrospinning is a process in which polymer fibers are produced with diameters down to the nanometer range through the action of an electric field imposed on a polymer solution/melt. Distinct properties that make electrospun ...
Alternative Technology for Artificial Stimulation of the Motility of the Gastrointestinal Tract

POPA, V.; HOTINEANU, V.; SCORPAN, A.; CAZAC, A.; BRANISTE, T.; TIGINYANU, I. (Tehnica UTM, 2015)

In most of the situations the direct electrical stimulation via electrodes of the gastrointestinal tract is not acceptable. An alternative remote method was developed by implantation of high concentration of piezoelectric ...
Biocompatible SPIONs with Superoxid Dismutase/Catalase Immobilized for Cardiovascular Applications

LACRAMIOARA, L.; DIACONU, A.; BUTNARU, M.; VERESTIUC, L. (Tehnica UTM, 2015)

Antioxidant enzymes are involved in the therapy of the cardiovascular diseases associated with increased production of reactive oxygen species (ROS). The enzyme efficiency is dependent on the bioactive molecule’s ability ...
Optical Properties and the Stability at Radiation for Monocrystals ZnIn2S4

ARAMA, E.; GHEORGHIŢA, E.; PÎNTEA, V.; MACIUGA, A.; GUBCEAC, N. (Tehnica UTM, 2015)

This study presents the results of investigations on the conductivity and irradiation stability of single crystals ZnIn2S4 in a wide range of incident electron energies ( 30 75 keV ) and the respective doses (1014 1020 ...
Features of Stimulated Atomic–Molecular Conversion with the Formation of Heteronuclear Molecules in Bose–Einstein Condensates

ZINGAN, A. P.; KHADZHI, P. I. (Tehnica UTM, 2015)

The dynamic of coherent atomic-molecular conversion assisted by two Raman laser pulses is investigated in the frame of Gross-Pitaevskii equation. We have obtained the nonlinear equation for the production rate of heteronuclear ...
Amplification of THz radiation in the system of excitons and biexcitons

MARKOV, D. A.; NAD’KIN, L.Yu. (Tehnica UTM, 2015)

The new mechanism of terahertz radiation generation (amplification) which is based on the use of quantum transitions between two-exciton and biexciton states is investigated. It is shown, that the enhancement coefficient ...
On determination of Gyratory Characteristics of Optically Active Crystals

STAMOV, I. G.; TKACHENKO, D. V. (Tehnica UTM, 2015)

The cause of the optical activity oscillation effects have been studied. it is shown, that the investigations of the oscillation effects in the transmission of crystals placed between two crossed polarizers, allow us to ...
Quasisurface Nonlinear Waves in Symmetric Three–Layer Structure with Metamaterial Film

KOROVAI, O. V. (Tehnica UTM, 2015)

A theory of TE-polarized nonlinear nonsymmetric quasisurface waves propagating in a symmetric planar three-layer structure with metamaterial core and nonlinear substrates is pretended. It is shown that in such structure ...
XRD and XPS of Cd2SnO4 Thin Films Obtained by Spray Pyrolysis

POTLOG, T.; BOTNARIUC, V.; RAEVSCHI, S.; DOBROMIR, M.; LUCA, D. (Tehnica UTM, 2015)

Cd2SnO4 thin films with a 1:1 and 1:3 Sn/Cd weight ratio at different substrate temperatures were fabricated by spray pyrolysis. The structural and surface composition of these films by X-ray diffraction (XRD) and X-ray ...
Conditions for Plasma Obtaining in the Gaseous Media and its Application in Nanotechnology

HIRBU, A. (Tehnica UTM, 2015)

The conditions for electrical discharge plasma obtaining in the gaseous media, as well as its application in different fields of nanotechnologies are analyzed in this paper. Plasma obtaining under the investigated conditions ...
The Influence of External Cavity Optical Feedback on the Dynamics of Quantum Dots Lasers

SANDUTA, A.; RUSU, S. S.; TRONCIU, V. Z. (Tehnica UTM, 2015)

This paper reports the numerical results on the investigation of the dynamical behavior of a semiconductor laser with quantum dots active medium and a feedback from double cavity. Due to the influence of the external ...
Zero Frequency Spectrum of 3-D Metal Photonic Crystals Obtained by the 3-D Kronig–Penney Model

SERGENTU, V. V.; URSAKI, V. V. (Tehnica UTM, 2015)

We demonstrate in this work the possibility of the existence of ultrashort (dark) pure electrical modes at extremely low frequencies in a system of metallic nanospheres inserted into a dielectric material. These modes ...
Polaron Theory of the Emission Current in a Cathode- Adsorbed Nanofilm System at the Initial Stage of a High- Voltage Gas Discharge

BARENGOLTS, Y. A.; BERIL, S. I. (Tehnica UTM, 2015)

A generalized formula has been derived for the current density of electron emission from a cathode coated with adsorbed non-metal nanofilm. Quantum contributions to the Nordheim function have been found which take into ...
The Generalization of Scientific and Educational Materials on Nanoelectronics

SPIVAK, V. M.; VLASIUK, A. G.; TIRSU, M. S. (Tehnica UTM, 2015)

Summarizes the scientific and educational materials on nanoelectronics, as reflected in monographs and textbooks on the basis of copyright, the most significant results of research and compilation of the most important ...
Investigation of the Generalized Anderson Impurity Model

MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (Tehnica UTM, 2015)

The new canonical transformation was proposed for generalized Anderson impurity model and proved appearance of ordinary Anderson impurity model with the external magnetic field. The Dyson type equations for one-particle ...
Preparation of Fine Bentonite Suspensions in Cavitation Fields

DUMITRAS, P. G.; BOLOGA, M. K.; SHEMYAKOVA, T. D. (Tehnica UTM, 2015)

It was demonstrated that application of ultrasonic, hydrodynamic, and bifrequency cavitation for bentonite dispergation allows one to obtain suspensions of nanoscale particles. It was investigated how the dimensions of the ...

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