Buscar recursos académicos

Nanosized CuFe2O4 ferrite was synthesized through the sol-gel self-combustion technique, using iron and copper nitrates with citric acid as fuel. The synthesized ferrite was subsequently analyzed using X-ray diffraction ...

An algorithm for analyzing double-crystal rocking curves from the near-surface layers of monocrystals has been proposed, and corresponding software has been developed. It is taken into account that to obtain correct resu...

Copper and aluminum electric corrosion is investigated experimentally. It is founded that copper corrosion is higher than aluminum corrosion. Intermetallics disappearance rate in Cu-Al system is analyzing theoretically. ...

This paper analyzes performance of bipolar transistors based on AlGaAs/GaAs heterostructures (HBT). Use of heterojunction as emitter junction allows radical improvement of its performance. Numerical simulation of HBT in ...

This work synthesized a thermoplastic polymer with varying densities along one direction using additive manufacturing technology to study the dynamic and static characteristics of functionally graded viscoelastic materia...

Organic non-linear optical Benzimidazolium salicylate (BISA) single crystals have been harvested from methanol solution by slow evaporation method. The grown crystals belong to the monoclinic crystal system with space gr...

A quantum chemical analysis has been carried out of the equilibrium structure and energy parameters of hydrated Li+, Na+, and K+ cations interacting with ionized silica surface by means of density functional theory metho...

The essence of openness of the economy as an object of theoretical study based on the analysis of publications and research of domestic and foreign scientists is explored in the article. On that basis, the authors give t...

Polycrystalline Sr(Bi4-xLax)(Ti3.975Zr0.025)O15 (x = 0.025, 0.05 ,0.075 and 0.1) is prepared by solid-state method. It was characterized by X-Ray Diffraction (XRD), Scanning Electron Micrograph (SEM) and Energy Dispersiv...

Thin-film CdS layers obtained by the open evaporation method in vacuum are considered and cluster models for calculation of crystal, band structure and thermodynamic parameters are proposed. The thermodynamic parameters ...

In this analysis, A green synthesis method utilizing a plant extract derived from Rumex nepalensis (spreng) was employed to synthesize silver nanoparticles. The synthesized nanoparticles were thoroughly characterized for...

Experimentally, by methods of X-ray phase analysis, temperature-programmable desorption mass spectrometry, electrical resistance, tension and compression, it was found that nanoscale fillers (carbon nanotubes, pyrogenic ...

Research of the influence of cement dust in zone of PJSC “Ivano-Frankivskcement” on the ants grouping was conducted. In this exploration was noticed that at the anthropogenic load disappears ants of the genus Formica...

Interaction between the components in the Gd–Mn–Ge ternary system was studied at 1070 K over the whole concentration range using scanning electron microscopy, energy dispersive X-ray microanalysis and X-ray diffracto...

The development strategy is a long-term roadmap of the company's activities, which makes it possible to achieve higher performance in relation to competitors. Almost all managers of agricultural enterprises in the proces...

The article deals with tribochemical influence of the surface activity of biosynthetic oils on the operational efficiency and reliability of lubricated friction nodes under the critical conditions. It is proved that the ...

Interaction between the components in the Ho-Fe-Sn ternary system was studied using X-ray diffractometry, metallography and electron microprobe analysis. Isothermal section of the phase diagram was constructed at 670 K o...

The interaction of the components in the Y–Dy–Ge ternary system was investigated using the methods of X-ray phase analysis, microstructure and energy dispersive X-ray spectroscopy in the whole concentration range at ...

Influence of physical-chemical factors at forming three-dimension network of thermosetting plastic in simulations action of constant physical field upon capable to polymorphic transition crystalline ((form of PbO first s...

Preschool age is a period of dynamic development of the child. The paper focuses on diagnosing the graphomotor skills of children of the Alpha generation from the perspective of preschool educators. The aim of the resear...

The article is devoted to the theoretical substantiation of the expediency of preparing future masters of preschool education for the formation of engineering skills in preschool children; analysis of scientists’ resea...

The article substantiates the relevance of the problem of using digital technologies in the professional training of future specialists in the field of technology and design. A theoretical analysis of scientific sources ...

This review provides a comprehensive analysis of the current state, progress, and challenges of thin-film solar cells based on Cu(In,Ga)Se₂ (CIGS) and Cu₂ZnSn(S,Se)₄ (CZTS(Se)) absorber materials. The study highlig...

In the article are highlighted the results of theoretical analysis of Russia’s attitude towards European integration. The analysis unveiled the historical, cognitive and discoursive sources of Russia’s unwillingness ...