Eco agriculture – une solution importante pour notre pays
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2020-04-19 20:29
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PEGZA, Ana; DUBAC, Victoria. Eco agriculture – une solution importante pour notre pays. In: Conferinţa tehnico-ştiinţifică a studenţilor, masteranzilor şi doctoranzilor. Volumul II, 26-29 martie 2019, Chișinău. Chișinău, Republica Moldova: Tehnica UTM, 2019, pp. 605-606. ISBN 978-9975-45-589-3.
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Conferinţa tehnico-ştiinţifică a studenţilor, masteranzilor şi doctoranzilor
Volumul II, 2019
Conferința "Conferinţa tehnico-ştiinţifică a studenţilor, masteranzilor şi doctoranzilor"
Chișinău, Moldova, 26-29 martie 2019

Eco agriculture – une solution importante pour notre pays


Pag. 605-606

Pegza Ana, Dubac Victoria
 
Université Technique de Moldavie
 
Disponibil în IBN: 2 aprilie 2020


Rezumat

L’agriculture est un secteur important de l’économie nationale, un pays agro-industrielle, qui doit contribuer fortement a l’excédent commercial. La majorité de la population moldave se trouve dans une zone rurale, d’où vient sa dépendance de l’agriculture. D’autre part, l’agriculture peut être une méthode efficiente pour diminuer la pauvreté, pour développer l’économie nationale et améliorer la situation générale du pays en formant une image attractive sur l’arène mondiale. À cause de la catastrophe écologique du 3ième millénaire, l’éco agriculture peut représenter une solution viable pour la situation de notre pays. Donc, on présente quelques aspects de l’éco agriculture sur le marché actuel.

Cuvinte-cheie
éco agriculture, écoproduit, consommateur, offre

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@article{ibn_71650,
author = {Gorbatova, A.V. and Khusyainov, D.I. and Buryakov, A.M. and Mishina, E.D.},
title = {<p>Terahertz generation monolayer WSe2 properties</p>},
collection = {Materials Science and Condensed Matter Physics},
year = {2018},
volume = {Ediția a 9-a},
pages = {171-171},
abstract = {(EN) <p>Transition metal dichalcogenides (TMDC) &ndash; MX2 (MoS2, WSe2, WS2, MoSe2, etc.) are layered two-dimensional graphene-like semiconductors with unique optical and electrical properties. Monolayers of TMDC have direct band gap in the visible frequency range and high mobility of charge carriers. Therefore, they are promising class of atomically thin semiconductors for a new generation of electronic and optoelectronic devices. &nbsp;Generation of terahertz (THz) emission by TMDC&lsquo;s crystals surface is a new trend in THz technology, such studies just started to appear in last few years [1,2]. WSe2 as well as MoS2 is an attractive material in THz technology due to its optical and electronical properties. Previously, monolayer WSe2 hadn&lsquo;t been used as a source of THz radiation, thus the research is relevant. &nbsp;Studied material was monolayer film WSe2 grown on a SiO2/Si substrate by technique of chemical vapor deposition (CVD). The oxide thickness was 285 nm. The film&lsquo;s quality was confirmed by methods of optical microscopy and photoluminescence spectroscopy. &nbsp;In this work we present experimental results of studying of monolayer&lsquo;s WSe2 surface THz emission. Experiment was carried out by technique of THz time-domain spectroscopy. Time and spectral characteristics of the generated THz signals were obtained. We also demonstrate THz radiation dependence on the azimuthal angle. In addition, azimuthal dependences of second harmonic generation (SHG) and generated THz signals were compared. Azimuthal studies have shown that the sample is isotropic. Using COMSOL Multiphysics software, we have analyzed the density energy distribution in monolayer WSe2 as a function of a thickness of the oxide SiO2. &nbsp;In conclusion, we can say that the mechanism of THz radiation is the built-in field, because the signals obtained from sample have an isotropic character. Our results provide a better understanding of light-matter interaction for monolayer WSe2.</p>},
url = {https://ibn.idsi.md/vizualizare_articol/71650},
}