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Obstructive sleep apnea in bariatric surgery patients: a population-based study.
Sleep Breath
January 2025
Department of Health Research Methods, Evidence and Impact (HEI), McMaster University, Hamilton, ON, Canada.
Purpose: A high proportion of obstructive sleep apnea (OSA) remains undiagnosed. The main objectives of this study were to measure the prevalence of diagnosed OSA and determine OSA predictors in patients who underwent bariatric surgery, who are predominantly female and pre-menopausal and represent an understudied population in OSA literature.
Methods: This was a cross-sectional population-based study using the Ontario Bariatric Registry (OBR) from 2010 to 2016, linked to ICES databases which include health administrative data on all encounters within a single public-payer system.
Calcium requirements in growing Japanese quail from 21 to 35 days post-hatch.
Poult Sci
December 2024
Department of Animal Sciences, Faculty of Agriculture, University of Zabol, Sistan, 98661-5538, Iran. Electronic address:
An experiment was conducted to estimate the optimal calcium (Ca) requirement for growth performance and bone health in quail from 21 to 35 days posthatch. Five dietary treatments containing 0.45, 0.
View Article and Find Full Text PDFAdvancing characterization of pyrolysis products: Comprehensive gas chromatography methods for analytes in gas and liquid phases.
J Chromatogr A
January 2025
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada T6G 2P5. Electronic address:
The development of biofuel technologies depends on the accurate identification and quantification of products from the conversion processes. Given the complexity of the renewable resources, the availability of biomass, and the versatility of conversion methods, there is a need for characterization methods that provide rapid and reliable analysis for various products coming from different conversion processes with minimal sample preparation. This study develops and validates gas chromatography methods that use multiple detectors to analyze pyrolytic compounds in both gas and liquid phases efficiently in a single, rapid run.
View Article and Find Full Text PDFConverting multiple hydrophobic aromatic plastic monomers into a single water-soluble substrate to increase bioavailability for the synthesis of polyhydroxyalkanoates by bacteria using batch, fed batch and continuous cultivation.
J Biotechnol
December 2024
School of Biomolecular and Biomedical Sciences, University College Dublin, Dublin D04 N2E5, Ireland; BiOrbic Bioeconomy Research Centre, O'Brien Centre for Science [Science East], University College Dublin, Dublin D04 N2E5, Ireland. Electronic address:
We demonstrate the proof of concept of increasing the bioavailability of carbon substrates, derived from plastic waste, for their conversion to the biodegradable polymer polyhydroxyalkanoate [PHA] by bacteria and test various approaches to PHA accumulation through batch, fed batch and continuous culture. Styrene, ethylbenzene, and toluene are produced from the pyrolysis of mixed plastic waste (Kaminsky, 2021; Miandad et al., 2017), but they are volatile and poorly soluble in water making them difficult to work with in aqueous fermentation systems.
View Article and Find Full Text PDFA laser ultrasound emitter based on high-power diode laser in overdrive operation mode for biomedical imaging applications.
Ultrasonics
December 2024
Universidad Carlos III de Madrid, Avenida de la Universidad, 30, Leganes, Madrid, Spain.
The most common transducers used to generate ultrasound in medical applications are based on short electrical pulses applied to piezoelectric transducers and capacitive micromachined ultrasound transducers. However, piezoelectric transducers have a limited frequency bandwidth, defined by their physical thickness, and capacitive micromachined ultrasound transducers have poor transmission efficiency. The high frequency cutoff limits the spatial resolution of ultrasonic images.
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