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Growth differences in different biotypes of the hybrid complex of Cobitis elongatoides × Cobitis tanaitica (Actinopterygii: Cypriniformes: Cobitidae) in the Okna River (Danube River basin), Slovakia [PDF]
Acta Ichthyologica et Piscatoria, 2017 Background. Many of Cobitis subpopulations exist as diploid–polyploid hybrid complexes where polyploid gynogenetic females act as “sperm parasites” of diploid individuals.
J. Fedorčák +3 more
doaj +3 more sources
Applied Sciences, 2020 Accurate measurement of pressure drop in energy sectors especially oil and gas exploration is a challenging and crucial parameter for optimization of the extraction process.
Abhishek Kumar +4 more
doaj +1 more source
Study of the dynamics for gas accumulation in the annulus of production wells
Записки Горного института, 2021 Accumulation of associated petroleum gas in the annulus is one of the negative factors that impede the intensification of mechanized oil production. An increase in annular gas pressure causes growth of bottomhole pressure, a decrease in back pressure to ...
Kamil R. Urazakov +2 more
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Myths and Realities Relating to Development of the Arterial Valves
Journal of Cardiovascular Development and Disease, 2014 There is considerable confusion as to how best describe the components of the arterial valves. It is hardly surprising, therefore, that similar uncertainties apply to concepts for their development. In this review, we describe the anatomy of the arterial
Robert H. Anderson +6 more
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Aortic Stenosis and Small Aortic Annulus.
Circulation, 2019 The presence of a small aortic annulus poses a considerable challenge in the management of patients with severe aortic stenosis, especially in elderly women, where it is a very frequent finding.
A. Freitas-Ferraz +9 more
semanticscholar +1 more source
International Journal of Clinical Practice, 1990 SummaryA 67‐year‐old woman had aortic and mitral annulus calcification resulting in severe stenosis and incompetence of the valves. Mitral annulus calcification produces specific echocardiographic abnormalities which may forewarn of technical difficulties during surgery.
W L, Morrison +2 more
openaire +2 more sources
Transient Dean flow in an annulus: a semi-analytical approach
Journal of Taibah University for Science, 2019 The mathematical model of a fully developed laminar transient flow formation between the gaps of two horizontally stationary concentric tubes forming concentric annulus due to the impact of sudden application of azimuthal pressure gradient is analysed ...
Basant Kumar Jha, Jibrin Danjuma Yahaya
doaj +1 more source
Fluids, 2022 The ability to predict critical heat flux (CHF) is of considerable interest for high-heat equipment, including nuclear reactors. CHF prediction from a mechanistic model for subcooled flow boiling in rod bundles still remains unsolved.
Wei Liu
doaj +1 more source
Energies, 2022 Subcooled flow boiling was experimentally investigated in a horizontal annulus with a temperature-controlled boiling surface and transparent outer pipe facilitating visualization.
Boštjan Zajec +2 more
doaj +1 more source
Some Properties of Annulus SLE
, 2006 An annulus SLE$_\kappa$ trace tends to a single point on the target circle, and the density function of the end point satisfies some differential equation. Some martingales or local martingales are found for annulus SLE$_4$, SLE$_8$ and SLE$_{8/3}$. From
Zhan, Dapeng
core +1 more source