Results 11 to 20 of about 3,302 (180)

Social and Cultural Dynamics in the Neolithic of Baikal-Yenisey Siberia: problems, hypotheses and facts

open access: yesАрхеология евразийских степей, 2023
An assessment was made of the possibilities of using burial complexes to study social and cultural dynamics in the Neolithic of Baikal-Yenisey Siberia (~8.6–5 ka cal BP).
Ivan M. Berdnikov, Natalia B. Sokolova
doaj   +1 more source

Synthesis of Ti-Ni and Zr-Ni Core–Shell Particles Using Galvanic Replacement

open access: yesInorganics, 2023
This article focuses on the galvanic replacement synthesis of Ti-Ni and Zr-Ni metal systems with a “core-shell” structure, which are potential precursors for intermetallics.
Alexander F. Dresvyannikov   +2 more
doaj   +1 more source

Evaluation of properties of biodegradable wood-polymer composite based on ozonized wood filler and polyhydroxybutyrate for application in agricultural industry [PDF]

open access: yesE3S Web of Conferences
The aim of this work is to develop a biodegradable planting container based on a wood-polymer composite made from polyhydroxybutyrate (PHB) and modified wood flour.
Anikeeva Ksenia, Safin Ruslan
doaj   +1 more source

Anisometric Ln(III) Complexes with Efficient Near-IR Luminescence

open access: yesInorganics, 2022
Recent studies in development of near-infrared luminophores focus on overcoming their disadvantages such as low quantum efficiency, limited emission power, and broad emission spectra.
Andrey A. Knyazev   +2 more
doaj   +1 more source

The possibilities of the highlands in optimizing the condition of athletes [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Философия. Психология. Педагогика, 2021
The objective of the research is to study the influence of restorative motor mode at the high altitude on functional condition of the sportsmen body during their stay in the mountains and the subsequent readaptation period. Materials and methods.
Timushkin, Aleksander Vladimirovich   +1 more
doaj   +1 more source

Composites Based on Polylactide Doped with Amorphous Europium(III) Complex as Perspective Thermosensitive Luminescent Materials

open access: yesInorganics, 2022
This work reports fabrication of polylactide (PLA) films doped with various additives of an amorphous Eu(III) complex. We study the temperature behavior of the luminescence intensity and lifetime of the PLA-Eu(III) composites in the range of 298–353 K ...
Andrey A. Knyazev   +2 more
doaj   +1 more source

Photostable Anisometric Lanthanide Complexes as Promising Materials for Optical Applications

open access: yesPhotonics, 2019
Uniform luminescent films with high optical quality are promising materials for modern molecular photonics. Such film materials based on β-diketonate complexes of lanthanides have the following application problem: rapid luminescence degradation ...
Andrey Knyazev   +2 more
doaj   +1 more source

The Joint Link of the rs1051730 and rs1902341 Polymorphisms and Cigarette Smoking to Peripheral Artery Disease and Atherosclerotic Lesions of Different Arterial Beds

open access: yesLife, 2023
Genome-wide association studies (GWAS) have discovered numerous single nucleotide polymorphisms (SNP) contributing to peripheral artery disease (PAD), but their joint effects with risk factors like cigarette smoking (CS) on disease susceptibility have ...
Sergey Zhabin   +11 more
doaj   +1 more source

Karl Marx

open access: yesRevista Aurora, 2009
Este artigo trata da relação entre a cidadania ? como mera igualdade política no Estado democrático moderno - e a desigualdade social arrimo do modo de produção capitalista e seus correlatos antagonismos de classes. A reflexão aqui desenvolvida tem por arrimo teórico as teses delineadas em A Questão Judaica (1843) de Karl Marx.
Jack Amariglio, Yahya M. Madra
  +6 more sources

Photonic-Assisted Receivers for Instantaneous Microwave Frequency Measurement Based on Discriminators of Resonance Type

open access: yesPhotonics, 2022
Photonic-assisted receivers for instantaneous microwave frequency measurement are devices used to measure the instantaneous frequency and amplitude of one or more microwave signals in the optical range, typically used in radar systems.
Alexander Ivanov   +4 more
doaj   +1 more source

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