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Now showing items 2301-2320 of 26702

Ghid metodic pentru analiza statistică a sectorului telecomunicațiilor

BLANARU, Vasile (Universitatea Tehnică a Moldovei, 2024)

Scopul acestei lucrări este să optimizeze performanța serviciului de telecomunicații prin intermediul analizei statistice. Astfel, obiectivul analizei este să îmbunătățească sistemul de management al companiilor de ...
Analiza interconectării interfețelor grafice cu rețeaua primară de comunicații pentru furnizarea serviciului de telefonie IP

BARCARI, Dumitru (Universitatea Tehnică a Moldovei, 2024)

Scopul tezei constă în organizarea eficientă a interconectării interfețelor grafice cu rețeaua primară de comunicații la furnizarea serviciului de telefonie IP prin ascensiunea protocolului SIP (Session Initiation Protocol) ...
Analiza și elaborarea direcțiilor de dezvoltare a companiei IT în domeniul Managementului Performanței

BABAN, Alexandra (Universitatea Tehnică a Moldovei, 2024)

Problematica studiului: Analiza strategiilor de management al performanței adaptate la specificul industriei IT și implementarea lor într-un mediu de afaceri dinamic dinamic. Scopul lucrării: Dezvoltarea unor strategii de ...
Selenium uptake and assessment of the biochemical changes in Arthrospira (Spirulina) platensis biomass during the synthesis of selenium nanoparticles

ZINICOVSCAIA, I.; CHIRIAC, T.; CEPOI, L.; RUDI, L.; CULICOV, O.; FRONTASYEVA, M.; RUDIC, V. (NRC Research Press, 2017)

The process of selenium uptake by biomass of the cyanobacterium Arthrospira (Spirulina) platensis was investigated by neutron activation analysis at different selenium concentrations in solution and at different contact ...
Growth and heavy metals accumulation by Spirulina platensis biomass from multicomponent copper containing synthetic effluents during repeated cultivation cycles

CEPOI, Liliana; ZINICOVSCAIA, Inga; RUDI, Ludmila; CHIRIAC, Tatiana; MISCU, Vera; DJUR, Svetlana; STRELKOVA, Ludmila; VERGEL, Konstantin; NEKHOROSHKOV, Pavel (Elsevier, 2020)

The metal bioaccumulation as well as biochemical changes in cyanobacterium Spirulina platensis biomass at its growth in multicomponent copper containing synthetic effluents during repeated cultivation cycle was investigated. ...
Spirulina platensis as renewable accumulator for heavy metals accumulation from multi-element synthetic effluents

CEPOI, Liliana; ZINICOVSCAIA, Inga; RUDI, Ludmila; CHIRIAC, Tatiana; MISCU, Vera; DJUR, Svetlana; STRELKOVA, Ludmila; GROZDOV, Dmitrii (Springer Nature Switzerland, 2020)

Metal accumulation by Spirulina platensis from synthetic effluents with the following chemical composition: Cr/Fe, Cr/Fe/Ni, Cr/Fe/Ni/Zn, and Cr/Fe/Ni/Zn/Cu during repeated cultivation cycle was investigated.Metal ions in ...
Proprietățile optice și electronice ale compușilor calcogenizi cristalini ZnAl2Se4, XIn2S4 (X = Zn, Hg), TlGaSe2

TÎRON, Andrei (Universitatea Tehnică a Moldovei, 2024)

Основная цель работы состояла в комплексном исследовании фундаментальных свойств ZnAl2Se4, ZnIn2S4, HgIn2S4 и TlGaSe2; определение их оптических параметров n, k, ε1, ε2; определение параметров экситонных состояний R, Eg, ...
Effects of PEG-Coated Silver and Gold Nanoparticles on Spirulina platensis Biomass during Its Growth in a Closed System

CEPOI, Liliana; ZINICOVSCAIA, Inga; RUDI, Ludmila; CHIRIAC, Tatiana; ROTARI, Ion; TURCHENKO, Vitalii; DJUR, Svetlana (MDPI (Basel, Switzerland), 2020)

Silver and gold nanoparticles are promising tools for medical and industrial applications; therefore, their ecotoxicity should be carefully examined. There are many publications that discuss their effects at high concentrations ...
Accumulation of dysprosium, samarium, terbium, lanthanum, neodymium and ytterbium by Arthrospira platensis and their effects on biomass biochemical composition

ZINICOVSCAIA, Inga; CEPOI, Liliana; RUDI, Ludmila; CHIRIAC, Tatiana; GROZDOV, Dmitrii; PAVLOV, Sergey; DJUR, Svetlana (Elsevier, 2021)

The growth of Arthrospira platensis and physiological changes in biomass under the effects of six rare earth elements Dy, Sm, Tb, La, Nd and Yb were evaluated. Elements were tested by three concentrations of 10, 20 and 30 ...
Effect of zinc-containing systems on Spirulina platensis bioaccumulation capacity and biochemical composition

ZINICOVSCAIA, Inga; CEPOI, Liliana; RUDI, Ludmila; CHIRIAC, Tatiana; GROZDOV, Dmitrii; VERGE, Konstantin (Springer Nature Switzerland, 2021)

Cyanobacteria Spirulina platensis due to its high biosorption and bioaccumulation capacity toward metal ions can be considered as an excellent candidate for environmental bioremediation. The effect of Zn and in different ...
Biochemical changes in microalga Porphyridium cruentum associated with silver nanoparticles biosynthesis

CEPOI, Liliana; RUDI, Ludmila; ZINICOVSCAIA, Inga; CHIRIAC, Tatiana; MISCU, Vera; RUDIC, Valeriu (Springer Nature Switzerland, 2021)

For the first time, the microalga Porphyridium cruentum was tested for its ability to produce silver nanoparticles. To characterize formed silver nanoparticles UV–vis Spectrometry, Scanning Electron Microscopy, Energy-dispersive ...
Biomass of Arthrospira platensis enriched with lithium by bioaccumulation and biosorption process

CEPOI, Liliana; ZINICOVSCAIA, Inga; RUDI, Ludmila; CHIRIAC, Tatiana; PANTELICA, Ana; APOSTOL, Andrei; DJUR, Svetlana; GANEA, Larisa; IANCU, Decebal (Elsevier, 2021)

The process of production of lithium-enriched Arthrospira platensis biomass in bioaccumulation and biosorption processes was studied. Lithium, Na and Mg content in biomass was determined using the Proton Induced Gamma ...
Biomass production and pigment content in Arthrospira platensis by adding AuNP(PEG) AND AgNP(PEG) at different growth phases of cultivation cycle

RUDI, Ludmila; CHIRIAC, Tatiana; CEPOI, Liliana; MISCU, Vera; ZINICOVSCAIA, Inga; VALUTA, Ana; RUDIC, Valeriu (Universitatea din Oradea, 2021)

The current study aimed to investigate the influence of growth phase on the response of cyanobacterium Arthrospira platensis to the presence of Au and Ag nanoparticles stabilized with polyethylene glycol in the culture ...
Bioremediation Capacity of Edaphic Cyanobacteria Nostoc linckia for Chromium in Association with Other Heavy-Metals-Contaminated Soils

CEPOI, Liliana; ZINICOVSCAIA, Inga; VALUTA, Ana; CODREANU, Liviu; RUDI, Ludmila; CHIRIAC, Tatiana; YUSHIN, Nikita; GROZDOV, Dmitrii; PESHKOVA, Alexandra (MDPI (Basel, Switzerland), 2022)

Anthropogenic activity is the main factor contributing to soil pollution with various toxic metals, including Cr(VI), which dictates the need for decontamination. Often, the traditionally used remediation methods (soil ...
Changes in the Dunaliella salina biomass composition during silver nanoparticles formation

CEPOI, Liliana; ZINICOVSCAIA, Inga; RUDI, Ludmila; CHIRIAC, Tatiana; TURCHENKO, Vitalii (Springer Nature Switzerland, 2022)

For the first time, microalga Dunaliella salina was successfully applied for synthesis of silver nanoparticles. The process of nanoparticles production was monitored using UV–Vis spectroscopy which exhibited surface plasmon ...
Perfecţionarea modului de înregistrare a produselor în avicultura pentru ouă

ȚAPU, Tatiana (Universitatea Agrară de Stat din Moldova, 2006)

This paper presents the basic axiom concerning the interaction between the obtained production quality and its consumption quality and its consumption: the higher are the requirements for the production as well as the ...
Peculiarities of the Edaphic Cyanobacterium Nostoc linckia Culture Response and Heavy Metal Accumulation from Copper-Containing Multimetal Systems

CEPOI, Liliana; ZINICOVSCAIA, Inga; VALUTA, Ana; CODREANU, Liviu; RUDI, Ludmila; CHIRIAC, Tatiana; YUSHIN, Nikita; GROZDOV, Dmitrii; PESHKOVA, Alexandra (MDPI (Basel, Switzerland), 2022)

Soil and water pollution is a major problem that has a negative impact on ecosystems and human health in particular. In the bioremediation processes, the application of photosynthetic microorganisms, including cyanobacteria, ...
Unele aspecte privind perfecţionarea contabilităţii obiectelor de mică valoare şi scurtă durată

BULGARU, Veronica (Universitatea Agrară de Stat din Moldova, 2006)

Due to the reform of the national accountancy system a series of national accountancy standards have been put into application. Unfortunately, in the elaboration N.S.A.2 „The stocks of goods and stuff, the international ...
International Scientific Symposium "Modern Trends in the Agricultural Higher Education", October 5-6, 2023

Unknown author (Technical University of Moldova, 2023)

This volume comprises the abstracts of the International Scientific Symposium „Modern trends in the agricultural higher education”, October 5-6, 2023, dedicated to the 90th anniversary of the founding of higher agricultural ...
Creşterea economică şi evoluţia sărăciei în Republica Moldova

PRISĂCARU, Veronica (Universitatea Agrară de Stat din Moldova, 2006)

In this article the problem of poverty in the Republic of Moldova and its dependence on economic growth are considered. There is also analyzed the development of economic indices and the income of different workmen categories. ...

Now showing items 2301-2320 of 26702

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