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| http://dx.doi.org/10.4103/ijnm.IJNM_123_17 | DOI Listing |
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Magnetosensitivity of tightly bound radical pairs in cryptochrome is enabled by the quantum Zeno effect.
Nat Commun
December 2024
Living Systems Institute, University of Exeter, Stocker Road, Exeter, Devon, EX4 4QD, UK.
The radical pair mechanism accounts for the magnetic field sensitivity of a large class of chemical reactions and is hypothesised to underpin numerous magnetosensitive traits in biology, including the avian compass. Traditionally, magnetic field sensitivity in this mechanism is attributed to radical pairs with weakly interacting, well-separated electrons; closely bound pairs were considered unresponsive to weak fields due to arrested spin dynamics. In this study, we challenge this view by examining the FAD-superoxide radical pair within cryptochrome, a protein hypothesised to function as a biological magnetosensor.
View Article and Find Full Text PDFSleep discrepancy and brain glucose metabolism in community-dwelling older adults.
Aging Brain
November 2024
School of Psychological Science, University of Western Australia, Crawley, Western Australia, Australia.
Sleep discrepancy (negative discrepancy reflects worse self-reported sleep than objective measures, such as actigraphy, and positive discrepancy the opposite) has been linked to adverse health outcomes. This study is first to investigate the relationship between sleep discrepancy and brain glucose metabolism (assessed globally and regionally via positron emission tomography), and to evaluate the contribution of insomnia severity and depressive symptoms to any associations. Using data from cognitively unimpaired community-dwelling older adults ( = 68), cluster analysis was used to characterise sleep discrepancy (for total sleep time (TST), wake after sleep onset (WASO), and sleep efficiency (SE)), and logistic regression was used to explore sleep discrepancy's associations with brain glucose metabolism, while controlling for insomnia severity and depressive symptoms.
View Article and Find Full Text PDFA review on the recovery of humic substances from anaerobic digestate of sludge as a potential fertilizer: Quantification, efficiency and interaction with pollutants.
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Engler-Bunte-Institut, Water Chemistry and Water Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 9, 76131, Karlsruhe, Germany.
This study reviewed the recovery of humic substances (HS) from anaerobic digestate of sludge as a potential fertilizer, focusing on the quantification of HS, the efficiency of HS recovery, and its interaction with pollutants. The potential pitfalls of current misunderstanding for HS quantification in sludge were pointed out. HS present in sludge showed potential to be used as a fertilizer, which solubilized insoluble phosphates for enhanced soil fertility.
View Article and Find Full Text PDFEnhanced TOC removal from paper mill wastewater using air dielectric barrier discharge plasma with persulfate sources: Mechanistic insights and continuous flow operation performance evaluation.
J Hazard Mater
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Department of Environmental Engineering, Kwangwoon University, Seoul 01897, Republic of Korea; Plasma Bioscience Research Center/Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea. Electronic address:
This study investigates the removal of total organic carbon (TOC) from paper mill wastewater using air dielectric barrier discharge (DBD) plasma, combined with various persulfate sources, namely potassium peroxymonosulfate (PMS), potassium peroxydisulfate (PDS), and sodium persulfate (SPS). Mechanistic insights into the activation of plasma-PDS and -PMS were obtained through quenching experiments and electron spin resonance (ESR) techniques. The addition of persulfate to air DBD plasma increased TOC removal kinetics by approximately 1.
View Article and Find Full Text PDFProportional Condylectomy for the Treatment of Unilateral Condylar Hyperplasia With Maloclussion: Role of Point-of-Care Manufacturing Surgical Guides and Intraoperative Computed Tomography to Avoid Secondary Orthognatic Surgery.
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Department of Maxillofacial Surgery, Hospital del Salvador, Santiago, Chile.
Condylar hyperplasia (CH) is a complex, usually unilateral pathology affecting the jaw, leading to facial asymmetry and malocclusion. Its etiology is unclear, with potential links to endocrine disorders, trauma, and genetic factors. Unilateral condylar hyperplasia (UCH) typically presents in young patients but can occur at any age.
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