Results 31 to 40 of about 1,309 (132)

Archaeogenomics of Animal Domestication in Eurasia

open access: yesПоволжская археология, 2021
The processes of domestication and subsequent distribution of animals in Eurasia are closely related to human migrations and intercultural exchanges starting from the end of the Pleistocene.
Trifonov Vladimir A.   +7 more
doaj   +1 more source

Brines in deep horizons of the Udachnaya kimberlite pipe

open access: yesГеодинамика и тектонофизика, 2018
The study was focused on groundwaters sampled from boreholes drilled to deep horizons of the Udachnaya kimberlite pipe and the host sedimentary strata. Brines in the rocks significantly complicate underground mining.
S. V. Alekseev   +6 more
doaj   +1 more source

Genotyping of Capreolus pygargus fossil DNA from Denisova cave reveals phylogenetic relationships between ancient and modern populations. [PDF]

open access: yesPLoS ONE, 2011
BACKGROUND: The extant roe deer (Capreolus Gray, 1821) includes two species: the European roe deer (C. capreolus) and the Siberian roe deer (C. pygargus) that are distinguished by morphological and karyotypical differences. The Siberian roe deer occupies
Nadezhda V Vorobieva   +8 more
doaj   +1 more source

Analysis of methodological approaches for simulation of gestational antiphospholipid syndrome

open access: yesPatologìâ, 2015
Experimental study of obstetric antiphospholipid syndrome may reduce morbidity and deaths of women and newborns. Aim. The aim of the work is to examine relevant literature on modeling obstetric antiphospholipid syndrome, to choose the most appropriate
V. Yu. Prokopiuk   +4 more
doaj   +1 more source

Impact of long trains on the railway track

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2016
The article presents results of pilot and theoretical studies of JSC VNIKTI in the field of interaction of railway track and a rolling stock and perspective of their application.
V. S. Kossov   +4 more
doaj   +1 more source

Lubrication of rail by traction unit in the train

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2017
Interaction of rolling stock and track is a fundamental physical process while running cars, locomotives and trains on the railway. The Research, Design and Technological Institute of the rolling stock (JSC "VNIKTI") for more than twenty years conducting
V. S. Kossov   +4 more
doaj   +1 more source

Retro‐Hetero‐Michael Addition Strategies in Organic Synthesis

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
In this review, synthetic approaches to carbo‐ and heterocyclic compounds, including natural products, published in the last 15 years (2011–2025) which have either relied upon or included a retro‐hetero‐Michael addition step at any stage are discussed.
Dina Scarpi, Ernesto G. Occhiato
wiley   +1 more source

High‐throughput multispecies quantitative polymerase chain reaction assays to study the effects of acute thermal stress in three species of Acipenser sturgeon

open access: yesJournal of Fish Biology, EarlyView.
Abstract Fishes experience thermal stress in their natural environment that can be caused by natural or anthropogenic factors and can directly affect their physiology. In this study, we developed a multispecies OpenArray™ qPCR (quantitative polymerase chain reaction) ‘chip’ to measure the effects of acute thermal stress on the mRNA response of ...
Hossein Haghighi   +6 more
wiley   +1 more source

3-(5-Phenyl-2H-tetrazol-2-yl)pyridine

open access: yesMolbank, 2023
3-(5-Phenyl-2H-tetrazol-2-yl)pyridine was synthesized by treating 5-phenyl-1H-tetrazole with pyridin-3-ylboronic acid under Chan–Evans–Lam coupling conditions. The structure and identity were confirmed by 1H, 13C-NMR spectroscopy, IR spectroscopy, UV–Vis
Ivan S. Ershov   +12 more
doaj   +1 more source

Multilevel genomic constraints shape nuclear tRNA gene organization in plants

open access: yesThe Plant Journal, Volume 127, Issue 3, August 2026.
SUMMARY Transfer RNAs (tRNAs) are essential components of the translation machinery. Their abundance and diversity shape decoding capacity as well as the efficiency and accuracy of protein synthesis. Because tRNA abundance is encoded in the genome through tDNA copy number, chromosomal organization, and cis‐regulatory sequences controlling transcription,
Guillaume Hummel   +4 more
wiley   +1 more source

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