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Vol. 1 : Realizări contemporane în științe ale naturii
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Browsing Vol. 1 : Realizări contemporane în științe ale naturii by Issue Date

Browsing Vol. 1 : Realizări contemporane în științe ale naturii by Issue Date

Now showing items 1-20 of 71

Problems of the implementation of the educational process in natural-mathematical disciplines in modern conditions

DAVIDENKO, Andrey (2023-03-18)

The article deals with the problems of the implementation of the educational process in the natural and mathematical disciplines in modern conditions. These conditions are caused by the development of society, science, ...
Utilizarea metodelor de analiză datelor mari în studii biogeografice: exemplul cerbilor fosili din zona palearctică de vest

CROITOR, Roman (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The application of data analytics methods to the paleontological record of fossil crown deer from the western Palearctic area provides a broader perspective on the biodiversity of deer and sheds light on the evolutionary ...
Sinteza și caracterizarea structurală a clusterului heterometalic {Co3Yb3} izobutirat în baza n-butildietanolaminei

STATI, Dumitru (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The Co(III) coordination compounds have a special interest due to their practical applications in various fields such as homogeneous and heterogeneous catalytic processes, generators of oxide systems used in electronics, ...
Obtaining, testing and valuation of some vegetable extracts from medicinal species

BOTĂU, Dorica; POPESCU, Sorina (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

In vitro cultivation techniques of vegetable tissues and cells under the influence of phytohormones, applied to medicinal species, become easy and fast methods of induction and selection of valuable metabolites. It is known ...
Eliminarea ionilor de nitrit din ape contaminate prin procesul hibrid de adsorbție-ultrafiltrare

COJOCARU, Corneliu; CIORNEA, Victor (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The results presented in this work refer to the removal of nitrite ions (NO2-) from contaminated waters (synthetic solutions) by applying a hybrid process of adsorption-ultrafiltration. As adsorbent, a commercial modified ...
Prepararea monastrolului chiral bioactiv pe baza unui protocol de sinteză ecologic și convenabil

VERDEȘ, Anastasia; GORINCIOI, Elena; MACAEV, Fliur (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The concept of "green chemistry" or "sustainable chemistry" is aimed at obtaining the non-toxic chemical products for humans and environment, but also the use of renewable organic raw materials. Thus, interest in chemical ...
Evaluarea legăturilor intermoleculare de hidrogen în compușii multicomponenți ai [Co(NH3)6]3+ cu acid 3-sulfobenzoic prin analiza suprafeței Hirshfeld

BELEAEV, Ecaterina (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

Cobalt complexes, especially those of Co(III) play an increasingly significant role due to their therapeutic use as excellent anticancer, antiviral and antibacterial agents. This study analyzes the role of intermolecular ...
Caracterizarea geochimică a apelor termale din România

BĂBĂRUŞ, Ioana; LUNGU, Ionuţ-Iulian; ŞTEFANACHE, Alina (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

Since the time of the Roman Empire, thermal water has been known for curative effects, becoming more and more used for relaxation, recreation, medical purposes, in the form of aerosols with very good results for local and ...
Compuși hetero-bimetalici ai Ba(II) ce conțin ligand O,N,O-donor și anion [Co(NCS)4] 2-

URECHE, Dumitru; BULHAC, Ion; BOUROȘ, Pavlina (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The reaction between pyridine-2,6-dicarbonyl dichloride and barium(II) and cobalt(II) thiocyanates in the methanol/ethanol environment result in two hetero-bimetallic compounds were obtained, which differ fundamentally: ...
Sinteza și structura unui compus binuclear al Mn(II) cu dianilinglioxima și acidul izoftalic

URECHE, Dumitru; BULHAC, Ion; BOUROȘ, Pavlina (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

As a result of the interaction between manganese(II) acetate tetrahydrate, dianilineglyoxime (DAnH2) and 1,3-benzenedicarboxylic acid (1,3-bdcH2) in the molar ratio of 2:1:2 in the medium of ethanol and DMSO, a new complex ...
Interacțiuni intermoleculare din cocristalele organice ale acidului 2-nitroteriftalic și diferiți liganzi piridinici

ȚAPU, Dumitrița; MELNIC, Elena; CHIȘCA, Diana (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

An important role in modern crystal engineering chemistry is played by the analysis of interactions between molecules and ions in crystals, where the relationship between structure and property is primarily studied. Crystal ...
Studiul DFT al mecanismului reacției de condensare a 3 piridincarboxaldehidei cu acidul p-aminobenzoic

ARSENE, Ion; PURCEL, Viorica (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

Quanto-chemical calculations represent a theoretical means of studying the mechanisms of chemical reactions, which allow the determination of a wide spectrum of molecular properties for the studied systems. In this work, ...
Compuși coordinativi mononucleari ai Nichelului(II) și Cuprului(II) cu ligandul bază Schiff derivat al S-metilizotiosemicarbazonei acetilacetonei și 8-chinolinaldehidei

COCU, Maria; BOUROSH, Paulina; KRAVTSOV, Victor; DANILESCU, Olga; BULHAC, Ion (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

Two new coordination compounds [NiL]I (1) and [CuLI] (2) with tetradentate N3O Schiff base ligand (HL) were synthesized by direct template condensation of acetylacetone S-methylisothiosemicarbazone and quinoline-8-carbaldehyde ...
Utilizarea compușilor vinil-triazolici în protecția grâului comun de putregaiul de rădăcină

LUPASCU, Lucian; MACAEV, Fliur; LUPAȘCU, Galina (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The article presents the results of the antifungal activity of the triazole-vinyl bromide derivative of 1-((2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolan-2-yl)methyl)-4-(4-methyl-2-oxopentyl)-1H-1,2,4-triazol-4-ium on ...
Studiu teoretic al cei mai stabili izomeri ai moleculelor IO3și HIO3

GORINCIOI, Natalia; BĂLAN, Iolanta; ARSENE, Ion (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

In the present work the qualitative features of the electronic structure of the XO3− and HXO3 molecules, their possible spatial structures and the form of the adiabatic potential energy surfaces (APES) of these systems in ...
Unele proprietăți fizico-chimice ale N-alcanii cu lanț scurt cauzate de orbitalii lor moleculari specifici

GORBACIOV, Mihail; GORINCIOI, Natalia; BĂLAN, Iolanta; ARSENE., Ion (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

It is shown that various physicochemical properties of short-chain n-alkanes (their surface tension and their solubility in water) can be adequately described on the basis of the so-called “specific molecular orbitals” ...
Analiza suprafeței Hirschfeld. Investigarea interacțiunilor intermoleculare în cristalul compusului ionic de 2,4-diamino-6-fenil-1,3,5-triazină și acid malonic

CRACIUN, Nicoleta; MELNIC, Elena; CHIȘCA, Diana (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

In this paper, Hirschfeld Surface Analysis - a convenient and accessible tool, implemented in the Crystal Explorer 17.5 program is highlighted. This method allows for the estimation of the contribution of intermolecular ...
Indicele de calitate a apei din afluenţii de dreapta ai fluviului Nistru

SANDU, Maria; TARIŢĂ, Anatol; MOŞANU, Elena (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

According to the water quality Index calculated in different sections of the Dniester River tributaries the water was from medium pollution to polluted state, in Botna river (Căuşeni town) in 1995 and 2004 being very ...
Pseudo efectul Jahn-Teller în starea de tranziție a transferului dublu de protoni în dimerul acidului formic

BĂLAN, Iolanta; GORBACIOV, Mihail; GORINCIOI, Natalia (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

This paper reflects a theoretical study of double proton transfer in formic acid dimer (as a model) using the Pseudo Jahn-Teller Effect (PJTE) theory and ab initio calculations of electronic structure and adiabatic potential ...
Interrelaţia calitatea aerului şi cea a depunerilor atmosferice solide. (Studiu de caz)

LOZAN, Raisa; TĂRÎȚĂ, Anatolie; SANDU, Maria; MOȘANU, Elena; COMARNIŢCHI, Anna (Universitatea Pedagogică de Stat "Ion Creangă", 2023-03-18)

The qualitative monitoring of solid atmospheric deposits (snow and snow showers, hail, vetches, hoar frost) and the interdependence between the content of pollutants in the air and the establishment of the regularities for ...

Now showing items 1-20 of 71

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