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Phase transition and superconductivity of selenium under pressure.
Phys Chem Chem Phys
January 2025
Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China.
Although a substantial amount of research has been conducted to unravel the structural configurations of selenium under pressure, the exquisite sensitivity of selenium's p-orbital electrons to this external force, leading to a plethora of structural variations, leaves several intermediary phases still shrouded in mystery. We, herein, systematically identify the structural and electronic transformations of selenium under high pressure up to 300 GPa, employing crystal structure prediction in conjunction with first-principles calculations. Our results for the transition sequence (321 → 2/ → 3̄ → 3̄) of selenium are in good agreement with experimental ones.
View Article and Find Full Text PDFCutaneous Anthrax: What is the Hallmark?
Acta Med Indones
October 2024
Division of Tropical and Infection Diseases, Department of Internal Medicine, Medical Faculty of Universitas Sebelas Maret - Moewardi Hospital, Surakarta, Indonesia.
A 71-year-old man complained of a blackish wound under his left eye, which began with fever and reddish spots after helping to slaughter a cow and cut its meat. The fever occured especially in the afternoon to evening, and is not accompanied by chills and sweating. On day 4 of fever onset, the fever diminished and the spots progressively widened with swelling.
View Article and Find Full Text PDFNavigating the complexities of managing placenta accreta spectrum: A case series and literature review.
Int J Gynaecol Obstet
January 2025
Department of Obstetrics and Gynaecology, Aga-Khan University of Hospital, Nairobi, Kenya.
Placenta accreta spectrum (PAS) poses a significant risk for maternal morbidity and mortality. There is a global rise in incidence of PAS in tandem with an increase in rates of cesarian section. Previous cesarian section and presence of placenta previa are two independent risk factors for development of PAS.
View Article and Find Full Text PDFConjugation of Short-Chain Fatty Acids to Bicyclic-Amines for Analysis by Liquid Chromatography Tandem Mass Spectroscopy.
Molecules
January 2025
Blood and Shock Research, US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA.
Conjugation of short-chain fatty acids (SDFAs) to amines containing ring structures allows for better measurement by liquid chromatography tandem mass spectroscopy (LC-MS/MS). However, collision-induced dissociation (CID) results in breaking the conjugate back to the original SCFA and amine. We therefore set out to find an amine that would remain on the SCFA after CID and create a unique daughter for selectivity of measurement.
View Article and Find Full Text PDFNurse management of minor problems in primary care emergencies: a non-randomized controlled trial.
BMC Nurs
January 2025
Unitat de Suport a la Recerca Metropolitana Nord, Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Mataró, Spain.
Background: Health systems must implement strategies to adapt to the high demand in primary care caused by social changes. Since 2009, the Catalan Institute of Health has been expanding the Nurse Demand Management programme through which nursing autonomously addresses minor health problems. This study aims to analyse whether this programme is a factor in improving the efficiency and quality of care in a primary care emergency centre.
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