Results 11 to 20 of about 404 (124)

A Predictive Oxygen Durability Model to Analyze Oxygen Consumption of Insulin Producing Cells Encapsulated Within a Highly Oxygenated Hydrogel

open access: yesAdvanced Materials Technologies, Volume 8, Issue 1, January 10, 2023., 2023
A novel ECM‐based hydrogel with high oxygen carrying capacity (Oxygel) is developed and characterized, showing optimal properties for its application as cell encapsulation matrix. In parallel, a predictive model to analyze cell‐oxygen consumption within this material is designed and validated, holding great promise to increase cell engraftment success ...
Daniel A. Domingo‐Lopez   +9 more
wiley   +1 more source

Modeling the Effect of Hyperoxia on the Spin–Lattice Relaxation Rate R1 of Tissues

open access: yesMagnetic Resonance in Medicine, Volume 88, Issue 4, Page 1867-1885, October 2022., 2022
Purpose Inducing hyperoxia in tissues is common practice in several areas of research, including oxygen‐enhanced MRI (OE‐MRI), which attempts to use the resulting signal changes to detect regions of tumor hypoxia or pulmonary disease. The linear relationship between PO2 and R1 has been reproduced in phantom solutions and body fluids such as vitreous ...
Emma Bluemke   +2 more
wiley   +1 more source

A General Model to Calculate the Spin–Lattice Relaxation Rate (R1) of Blood, Accounting for Hematocrit, Oxygen Saturation, Oxygen Partial Pressure, and Magnetic Field Strength Under Hyperoxic Conditions

open access: yesJournal of Magnetic Resonance Imaging, Volume 55, Issue 5, Page 1428-1439, May 2022., 2022
Background Under normal physiological conditions, the spin–lattice relaxation rate (R1) in blood is influenced by many factors, including hematocrit, field strength, and the paramagnetic effects of deoxyhemoglobin and dissolved oxygen. In addition, techniques such as oxygen‐enhanced magnetic resonance imaging (MRI) require high fractions of inspired ...
Emma Bluemke   +2 more
wiley   +1 more source

Device for respiration activity measurement enables the determination of oxygen transfer rates of microbial cultures in shaken 96‐deepwell microtiter plates

open access: yesBiotechnology and Bioengineering, Volume 119, Issue 3, Page 881-894, March 2022., 2022
A new prototype device with small geometric footprint, the µTOM, allows monitoring of the oxygen transfer rate (OTR) in 96 deepwell microtiter plates. The device was used to monitor cultivations of common production organisms used in commercial biotechnology and research, such as Escherichia coli, Hansenula polymorpha (Ogataea angusta), and Ustilago ...
Robert Dinger   +5 more
wiley   +1 more source

FLASH radiotherapy with carbon ion beams

open access: yesMedical Physics, Volume 49, Issue 3, Page 1974-1992, March 2022., 2022
Abstract FLASH radiotherapy is considered a new potential breakthrough in cancer treatment. Ultra‐high dose rates (>40 Gy/s) have been shown to reduce toxicity in the normal tissue without compromising tumor control, resulting in a widened therapeutic window.
Uli Andreas Weber   +2 more
wiley   +1 more source

A simplified empirical model to estimate oxygen relaxivity at different magnetic fields

open access: yesNMR in Biomedicine, Volume 35, Issue 2, February 2022., 2022
We have compiled 28 reported empirical values of the relaxivity of oxygen and provide an empirical model for estimating the relaxivity of oxygen in water, saline, plasma, and vitreous fluids, accounting for magnetic field strength and temperature. The model agrees well (R2 = 0.93) with the data gathered from literature, ranging from 0.011 to 8.45 T and
Emma Bluemke   +2 more
wiley   +1 more source

Film Effectiveness Downstream the Trenches with Tilted Target Wall

open access: yesInternational Journal of Rotating Machinery, Volume 2022, Issue 1, 2022., 2022
Film cooling is a commonly‐accepted effective way to protect the gas turbine hot sections from the high temperature products of the combustion chamber. Numerous film hole geometries have been the subject of investigation by many researchers over the past three decades with the aim of keeping the target wall under the maximum allowable temperature with ...
Fan Yang   +2 more
wiley   +1 more source

Valmet Chiral Schiff‐Base Ligands And Their Copper(II) Complexes as Organo, Homogeneous and Heterogeneous Catalysts for Henry, Cyanosilylation and Aldol Coupling Reactions

open access: yesChemCatChem, Volume 13, Issue 21, Page 4634-4644, November 8, 2021., 2021
Immobilization: L‐ and D‐valmet ligands prepared from the condensation of o‐vanillin and L‐, respectively, D‐methionine exhibit a different catalytic behavior affording asymmetric Henry condensation, cyanosilylation reaction after complexation with copper or the Aldol reaction after the immobilization of these complexes onto GO.
Zinnia Arora   +10 more
wiley   +1 more source

High‐throughput determination of oxygen dissociation curves in a microplate reader—A novel, quantitative approach

open access: yesPhysiological Reports, Volume 9, Issue 16, August 2021., 2021
Hemoglobin oxygen dissociation curves are measured using a modified, commercial 96‐well plate with an integrated unidirectional gas‐flow system specifically adapted for use in fluorescence microplate readers. Up to 92 samples of whole or hemolyzed, buffered or unbuffered blood, including appropriate controls or internal standard hemoglobin solutions ...
Simon Woyke   +6 more
wiley   +1 more source

Temperature but not ocean acidification affects energy metabolism and enzyme activities in the blue mussel, Mytilus edulis

open access: yesEcology and Evolution, Volume 11, Issue 7, Page 3366-3379, April 2021., 2021
Our study demonstrates that adult Mytilus edulis from Gulf of Maine, one of the hot spots for global climate change, are metabolically resilient to the moderate acidification scenarios for the next 100–300 years but responsive to warming as seen in changes in metabolic rate, energy reserves, metabolite profiles, and enzyme activities.
Omera B. Matoo   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy