Partial pressure ≈ Partial pressure
View article
Relating oxygen partial pressure, saturation and content: the haemoglobin–oxygen dissociation curve Open
Key Points In clinical practice, the level of arterial oxygenation can be measured either directly by blood gas sampling to measure partial pressure ( P aO 2 ) and percentage saturation ( S aO 2 ) or indirectly by pulse oximetry ( S pO 2 )…
View article
Multilayer Electrolyzer Stack Converts Carbon Dioxide to Gas Products at High Pressure with High Efficiency Open
Electrochemical reduction of CO2 is a value-added approach to both decrease the atmospheric emission of carbon dioxide and form valuable chemicals. We present a zero gap electrolyzer cell, which continuously converts gas phase CO2 to produ…
View article
Partial pressure of oxygen in the human body: a general review. Open
The human body is a highly aerobic organism, in which it is necessary to match oxygen supply at tissue levels to the metabolic demands. Along metazoan evolution, an exquisite control developed because although oxygen is required as the fin…
View article
Oxidation mechanism of thin Cu films: A gateway towards the formation of single oxide phase Open
Controlled thermal oxidations of thin copper films at relatively lower temperatures (up to 500°C) leading towards the formation of a single phase of copper oxide are investigated where the oxidation temperature, duration, oxygen partial pr…
View article
Clinical recommendations for high altitude exposure of individuals with pre-existing cardiovascular conditions Open
Take home figureAdapted from Bärtsch and Gibbs2 Physiological response to hypoxia. Life-sustaining oxygen delivery, in spite of a reduction in the partial pressure of inhaled oxygen between 25% and 60% (respectively at 2500 m and 8000 m), …
View article
Limestone Calcination Nearby Equilibrium: Kinetics, CaO Crystal Structure, Sintering and Reactivity Open
In this work, we analyze limestone calcination kinetics at environmental conditions involving a CO2 partial pressure P close to the equilibrium pressure Peq by means of in situ X-ray diffraction (XRD) and thermogravimetric (TG) analyses. I…
View article
Ambient Pressure XPS Study of Mixed Conducting Perovskite-Type SOFC Cathode and Anode Materials under Well-Defined Electrochemical Polarization Open
The oxygen exchange activity of mixed conducting oxide surfaces has been widely investigated, but a detailed understanding of the corresponding reaction mechanisms and the rate-limiting steps is largely still missing. Combined in situ inve…
View article
Oxygen nonstoichiometry, defect equilibria, and thermodynamic characterization of LaMnO3 perovskites with Ca/Sr A-site and Al B-site doping Open
ISSN:1359-6454
View article
Synthesis and Characterization of Hexagonal Boron Nitride as a Gate Dielectric Open
Two different growth modes of large-area hexagonal boron nitride (h-BN) film, a conventional chemical vapor deposition (CVD) growth mode and a high-pressure CVD growth mode, were compared as a function of the precursor partial pressure. Co…
View article
Model-assisted identification of solid oxide cell elementary processes by electrochemical impedance spectroscopy measurements Open
Electrochemical Impedance Spectroscopy (EIS) is extensively used to characterize Solid Oxide Cells (SOCs) to extract information on the elementary loss mechanisms. However, these individual mechanisms usually overlap in the frequency domai…
View article
The Relationship Between Oxygen Reserve Index and Arterial Partial Pressure of Oxygen During Surgery Open
BACKGROUND: The use of intraoperative pulse oximetry (Sp o 2 ) enhances hypoxia detection and is associated with fewer perioperative hypoxic events. However, Sp o 2 may be reported as 98% when arterial partial pressure of oxygen (Pa o 2 ) …
View article
Hydrophobic Functional Deep Eutectic Solvents Used for Efficient and Reversible Capture of CO<sub>2</sub> Open
CO2 emission from flue gas is an important issue threatening human survival. Deep eutectic solvents (DESs), which have many unique properties, have been studied for CO2 capture. However, water can be absorbed by DESs during the absorption …
View article
Photosynthetic induction and its diffusional, carboxylation and electron transport processes as affected by CO<sub>2</sub>partial pressure, temperature, air humidity and blue irradiance Open
The environmental factors CO2 partial pressure, temperature and VPDleaf-air had significant impacts on rates of photosynthetic induction, as well as on underlying diffusional, carboxylation and electron transport processes. Furthermore, ma…
View article
Role of Pressure in the Growth of Hexagonal Boron Nitride Thin Films from Ammonia-Borane Open
We analyze the optical, chemical, and electrical properties of chemical vapor\ndeposition (CVD) grown hexagonal boron nitride (h-BN) using the precursor\nammonia-borane ($H_3N-BH_3$) as a function of $Ar/H_2$ background pressure\n($P_{TOT}…
View article
A Henry's law method for generating bulk nanobubbles Open
A new technique for generating bulk nanobubble suspensions has been developed based on Henry's law which states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid.
View article
The Chemical Evolution of the La0.6Sr0.4CoO3−δ Surface Under SOFC Operating Conditions and Its Implications for Electrochemical Oxygen Exchange Activity Open
Owing to its extraordinary high activity for catalysing the oxygen exchange reaction, strontium doped LaCoO3 (LSC) is one of the most promising materials for solid oxide fuel cell (SOFC) cathodes. However, under SOFC operating conditions t…
View article
Analysis of Inkjet Printed PEFC Electrodes with Varying Platinum Loading Open
PEFC electrodes manufactured using inkjet printing are investigated. Cell performance, Tafel slope, reaction order and local oxygen transport resistance of electrodes with varying Pt loadings of 0.014 to 0.113 mg/cm2 are studied in order t…
View article
The Reduction of Dissolved Oxygen During Magnesium Corrosion Open
The consumption of dissolved oxygen (DO) during the corrosion of commercially pure magnesium specimens was investigated by localized corrosion techniques. The concentration of oxygen and the local current density on the near‐surface of mag…
View article
Oxygen supply capacity in animals evolves to meet maximum demand at the current oxygen partial pressure regardless of size or temperature Open
The capacity to extract oxygen from the environment and transport it to respiring tissues in support of metabolic demand reportedly has implications for species’ thermal tolerance, body-size, diversity and biogeography. Here we derive a qu…
View article
Research Update: Stoichiometry controlled oxide thin film growth by pulsed laser deposition Open
The oxidation of species in the plasma plume during pulsed laser deposition controls both the stoichiometry as well as the growth kinetics of the deposited SrTiO3 thin films, instead of the commonly assumed mass distribution in the plasma …
View article
Favorable Redox Thermodynamics of SrTi<sub>0.5</sub>Mn<sub>0.5</sub>O<sub>3−δ</sub> in Solar Thermochemical Water Splitting Open
Two-step, solar thermochemical splitting of water using nonstoichiometric redox-active metal oxides has emerged as an intriguing approach for large-scale hydrogen production. Perovskites have been proposed as alternatives to state-of-the-a…
View article
Defect engineering of BCZT-based piezoelectric ceramics with high piezoelectric properties Open
The intrinsic conduction mechanism and optimal sintering atmosphere of (Ba 0.85 Ca 0.15 )(Zr 0.1 Ti 0.9 )O 3 (BCZT) ceramics were regulated by Mn-doping element in this work. By Hall and impedance analysis, the undoped BCZT ceramics exhibi…
View article
Correlation between the levels of SpO<sub>2</sub>and PaO<sub>2</sub> Open
Sir, Sarkar et al. in 2017, in their recent article,[1] have very nicely elucidated various mechanisms of hypoxemia, and I would like to congratulate them for this endeavor. In continuation, I would like to offer the following hypothesis w…
View article
Enhancing the Hydrogen Storage Properties of AxBy Intermetallic Compounds by Partial Substitution: A Short Review Open
Solid-state hydrogen storage covers a broad range of materials praised for their gravimetric, volumetric and kinetic properties, as well as for the safety they confer compared to gaseous or liquid hydrogen storage methods. Among them, AxBy…
View article
Oxygen supply capacity breathes new life into critical oxygen partial pressure (<i>P</i>crit) Open
The critical oxygen partial pressure (Pcrit), typically defined as the PO2 below which an animal's metabolic rate (MR) is unsustainable, is widely interpreted as a measure of hypoxia tolerance. Here, Pcrit is defined as the PO2 at which ph…
View article
Dehydration Pathways of Gypsum and the Rehydration Mechanism of Soluble Anhydrite γ-CaSO<sub>4</sub> Open
The dehydration products of gypsum under different temperature and water vapor pressure were investigated by thermodynamic theory. Additionally, the rehydration mechanism of soluble anhydrite was also studied by Monte Carlo (MC) simulation…
View article
Mechanism of Cobalt-Catalyzed CO Hydrogenation: 1. Methanation Open
The mechanism of CO hydrogenation to CH4 at 260 °C on a cobalt catalyst is investigated using steady-state isotopic transient kinetic analysis (SSITKA) and backward and forward chemical transient kinetic analysis (CTKA). The dependence of …
View article
Solar Hydrogen Production via a Samarium Oxide-Based Thermochemical Water Splitting Cycle Open
The computational thermodynamic analysis of a samarium oxide-based two-step solar thermochemical water splitting cycle is reported. The analysis is performed using HSC chemistry software and databases. The first (solar-based) step drives t…
View article
Formic Acid Formation by Clostridium ljungdahlii at Elevated Pressures of Carbon Dioxide and Hydrogen Open
Low productivities of bioprocesses using gaseous carbon and energy sources are usually caused by the low solubility of those gases (e.g., H2 and CO). It has been suggested that increasing the partial pressure of those gases will result in …
View article
Effect of A-Site Cation Ordering on Chemical Stability, Oxygen Stoichiometry and Electrical Conductivity in Layered LaBaCo2O5+δ Double Perovskite Open
The effect of the A-site cation ordering on the chemical stability, oxygen stoichiometry and electrical conductivity in layered LaBaCo2O5+δ double perovskite was studied as a function of temperature and partial pressure of oxygen. Tetragon…