Results 1 to 10 of about 450,466 (155)

Therapeutic gases used in balneotherapy and rehabilitation medicine - scientific relevance in the last ten years (2011 – 2020) - Synthetic literature review [PDF]

open access: yesBalneo and PRM Research Journal, 2021
: Background. The medical relevance of therapeutic gases can range from use in burns and stroke victims to hypoxia therapy in children. However, medical gases such as oxygen, hydrogen, helium and xenon have recently come under increased exploration for
MUNTEANU Constantin   +3 more
doaj   +1 more source

Reduction of the Pressurization System Final Mass for a Modern Rocket Launcher [PDF]

open access: yesJournal of Aerospace Technology and Management, 2022
The work focuses on optimizing the pressurization system’s operating performance for a fuel tank of a turbo-pumped liquid propellant rocket engine. This system is the most complex and expensive in a medium-size launch vehicle, after the engine.
Yurii Mitikov, Olexiy Shynkarenko
doaj   +1 more source

Assessing the expansion of the Cambrian Agronomic Revolution into fan-delta environments

open access: yesScientific Reports, 2022
The intensity, extent, and ecosystem-level impact of bioturbation (i.e. Agronomic Revolution) at the dawn of the Phanerozoic is a hotly debated issue.
Andrei Ichaso   +4 more
doaj   +1 more source

Nicotinamide adenine dinucleotide and the sirtuins caution: Pro‐cancer functions

open access: yesAging Medicine, 2021
This scoping review aims to perform a brief but comprehensive assessment of existing peer‐reviewed literature and determine whether raising nicotinamide adenine dinucleotide can prevent or promote tumorigenesis. The examination of extensive peer‐reviewed
Raymond D. Palmer, Mauro Vaccarezza
doaj   +1 more source

Precursor comparisons for the upregulation of nicotinamide adenine dinucleotide. Novel approaches for better aging

open access: yesAging Medicine, 2021
Nicotinamide adenine dinucleotide (NAD) is a coenzyme found in every human cell and regulates a number of systems across multiple cellular compartments and tissue types via an endogenous and exogenous influence.
Raymond D. Palmer   +2 more
doaj   +1 more source

Active degassing of crustal CO2 in areas of tectonic collision: A case study from the Pollino and Calabria sectors (Southern Italy)

open access: yesFrontiers in Earth Science, 2022
Carbon dioxide (CO2) is released from the Earth’s interior into the atmosphere through both volcanic and non-volcanic sources in a variety of tectonic settings.
Paolo Randazzo   +10 more
doaj   +1 more source

Neonatal Applications of Heliox: A Practical Review

open access: yesFrontiers in Pediatrics, 2022
Heliox is a mixture of helium and oxygen that may be utilized as an alternative to air-oxygen during the ventilatory support in the neonate. Special physical properties of Heliox, particularly low density, allow for improved gas flow and diffusion. First
Tomasz Szczapa   +2 more
doaj   +1 more source

The Helium and Carbon Isotope Characteristics of the Andean Convergent Margin

open access: yesFrontiers in Earth Science, 2022
Subduction zones represent the interface between Earth’s interior (crust and mantle) and exterior (atmosphere and oceans), where carbon and other volatile elements are actively cycled between Earth reservoirs by plate tectonics.
P. H. Barry   +30 more
doaj   +1 more source

Helium Emissions Observed in Ground-Based Spectra of Solar Prominences [PDF]

open access: yes, 2012
The only prominent line of singly ionized helium in the visible spectral range, helium-II 4686 A, is observed together with the helium-I 5015 A singlet and the helium-I 4471 A triplet line in solar prominences.
Bianda, Michele   +3 more
core   +2 more sources

Physical Properties of Helium and Application in Respiratory Care

open access: yesEncyclopedia, 2023
Helium is a low-density, inert, monoatomic gas that is widely used in medical applications. In respiratory care, Helium is mainly used as an adjunct therapy for patients with severe upper airway obstruction and asthma.
Eric Chappel
doaj   +1 more source

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