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Cerebral arterial air embolism (CAE) is a serious and potentially dangerous condition that can interrupt the blood supply to the brain and cause stroke. One of the promising gas mixtures for emergency treatment of air embolism is an oxygen-helium mixture. We modeled CAE in awake rats by injecting air into the common carotid artery.
View Article and Find Full Text PDFDecompression sickness of the inner ear and relationship with a patent oval foramen: a study of 61 cases.
Eur Arch Otorhinolaryngol
August 2024
Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Hospital Grenoble-Alpes, BP 217, 38043, Grenoble Cedex 09, France.
Objective: To discuss the link between inner ear decompression sickness and patent foramen ovale.
Materials And Methods: Monocentric and retrospective study on decompression sickness of the inner ear requiring hyperbaric chamber treatment, from 2014 to 2021.
Results: Sixty-one patients of inner ear decompression sickness were included in this study.
Evaluation of the Efficiency of Oxygen-Helium Therapy for Patients with Covid-19-Associated Pneumonia.
Hum Physiol
January 2023
Institute of Biomedical Problems, Russian Academy of Sciences, Moscow, Russia.
This article summarizes the experience of managing patients with COVID-19-associated pneumonia treated in one of the intensive care units of a multidisciplinary hospital with and without a heated oxygen-helium mixture. It has been shown that the use of a heated oxygen-helium mixture in the complex therapy of pneumonia caused by SARS-CoV-2 is effective. A comparative analysis of the clinical manifestations of the disease and the results of laboratory tests in the main and control groups of patients confirm with a high degree of reliability the improvement of blood oxygenation, the normalization of the acid-base balance and the positive dynamics of the main parameters, which ultimately increases the efficacy and reduces the time of treatment.
View Article and Find Full Text PDFPyrolysis and Combustion Chemistry of Pyrrole, a Reference Component for Bio-oil Surrogates: Jet-Stirred Reactor Experiments and Kinetic Modeling.
Energy Fuels
May 2021
Laboratoire Réactions et Génie des Procédés, CNRS, Université de Lorraine, ENSIC, 54001 Nancy Cedex, France.
Fast-pyrolysis bio-oils (FPBOs) obtained from lignocellulosic biomass are gaining attention as sustainable fuels for various applications, including the transport sector and power production. A significant fraction of bio-oils is constituted by nitrogen-containing compounds (N fuels) that should be considered when developing surrogate models for FPBOs. Moreover, the content of N fuels in FPBOs is expected to strongly contribute to the production of nitrogen oxides (NO ) directly from fuel-bound nitrogen (fuel NO ), in addition to the thermal NO formation pathways typical of high-temperature combustion conditions.
View Article and Find Full Text PDFFirst-principles equation of state database for warm dense matter computation.
Phys Rev E
January 2021
Department of Earth and Planetary Science, University of California, Berkeley, California 94720, USA.
We put together a first-principles equation of state (FPEOS) database for matter at extreme conditions by combining results from path integral Monte Carlo and density functional molecular dynamics simulations of the elements H, He, B, C, N, O, Ne, Na, Mg, Al, and Si as well as the compounds LiF, B_{4}C, BN, CH_{4}, CH_{2}, C_{2}H_{3}, CH, C_{2}H, MgO, and MgSiO_{3}. For all these materials, we provide the pressure and internal energy over a density-temperature range from ∼0.5 to 50 g cm^{-3} and from ∼10^{4} to 10^{9} K, which are based on ∼5000 different first-principles simulations.
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