نتایج جستجو برای: oxygen deficiency

تعداد نتایج: 342153  

Journal: :Circulation. Heart failure 2013
Peter A Hecker Vincenzo Lionetti Rogerio F Ribeiro Sharad Rastogi Bethany H Brown Kelly A O'Connell James W Cox Kadambari C Shekar Dionna M Gamble Hani N Sabbah Jane A Leopold Sachin A Gupte Fabio A Recchia William C Stanley

BACKGROUND Glucose 6-phosphate dehydrogenase (G6PD) is the most common deficient enzyme in the world. In failing hearts, G6PD is upregulated and generates reduced nicotinamide adenine dinucleotide phosphate (NADPH) that is used by the glutathione pathway to remove reactive oxygen species but also as a substrate by reactive oxygen species-generating enzymes. Therefore, G6PD deficiency might prev...

Journal: :Journal of Chemical Engineering of Japan 2023

Oxygen-deficient titania (TiO2) nanoparticle photocatalysts were synthesized using a flame synthesis method. The degree of oxygen deficiency in the TiO2 particles could be changed by moving position quenching N2 gas ring with respect to reduce concentration flame. Photocatalytic property evaluation revealed that produced had better photocatalytic performance visible light region (wavelength λ >...

Journal: :Magnetochemistry 2022

We use density functional theory (DFT) calculations to show that oxygen vacancies (vO) and mobility induce noncentrosymmetric polar structures in SrTi1−x−yFexCoyO3−δ (STFC, x=y=0.125) with δ={0.125,0.25}, enhance the saturation magnetization, give rise large changes electric polarization |ΔP|. present an intuitive set of rules describe properties STFC, which are based on interplay between (Co/F...

Journal: :F1000Research 2023

Background: The aim of the current study was to assess patients with COVID-19 and impact vitamin D supplementation on course COVID-19. Methods: This prospective cohort included hospitalized due between December 2020 2021. Patients' demographic, clinical, laboratory parameters were analysed. Results: 301 participants enrolled in study. 46 (15,3%) had moderate, 162 (53,8%) ...

Journal: :JPhys energy 2022

Abstract Oxygen mass transport in perovskite oxides is relevant for a variety of energy and information technologies. In oxide thin films, cation nonstoichiometry often found but its impact on the oxygen properties not well understood. Here, we used isotope exchange depth profile technique coupled with secondary ion spectrometry to study defect compensation mechanism Mn-deficient La 0.8 Sr 0.2 ...

Journal: :Pediatrics 2015
Rephainah Mallett Shanique Simmonds Abirami Kuppurajan Arul Narayanan Karthik Balasubramanian Santhanakrishnan Ramakrishnan

We report on a term neonate with unexplained respiratory distress, dilatation of the descending aorta, and low serum retinol concentration. The respiratory distress did not respond to conventional medical management and persisted for 22 days requiring an inspired oxygen fraction of 0.4 to 0.5 to maintain adequate arterial oxygen saturation. One week after intramuscular vitamin A therapy, the re...

2016
Feifei Dong Meng Ni Moses O Tade Zongping Shao

Here we present a comprehensive study of oxygen-deficient double perovskites PrBa1-xCo2O5+δ (x = 0.00, 0.05, 0.10) to exploit their potential use as cathode materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs). Special attention is paid to the structure, oxygen concentration and oxygen-ion transport properties, which are key factors related to the electrochemical performance...

2007
Soack Dae Yoon Vincent G Harris Carmine Vittoria Allan Widom

TiO2−δ films were deposited on (100) lanthanum aluminate, LaAlO3, substrates at a low oxygen chamber pressure, P ≈ 0.3 mTorr, employing a pulsed laser ablation deposition technique. In previous work, it was established that the oxygen deficiency in these films induced ferromagnetism. In this work it is demonstrated that this same oxygen deficiency also gives rise to semiconductor titanium ion i...

Journal: :international journal of pediatrics 0
gian maria pacifici via san andrea 32, 56127 pisa, italy.

iron is essential to erythrocyte oxygen transport and is a catalyst for oxidative metabolism in all cells. iron is absorbed by the duodenum and requires an acidic environment for optimal absorption. iron is found for 70% in erythrocytes, and 30% in storage, and a small amount in myoglobin and cytochromes. iron supplementation reduces anemia in breastfed infants and increases in significant dose...

2006
Y. Bruynseraede C. Van Haesendonck I. K. Schuller

It is now well established that oxygen plays a crucial role in the structural, magnetic and transport properties of high Tc materials. We present here a brief review of the effect of the oxygen deficiency and vacancy ordering on the superconducting and magnetic properties of various superconductors.

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