[This corrects the article DOI: 10.1371/journal.pone.0194981.].
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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0307612 | PLOS |
Photoacoustics
February 2025
College of Control Science & Engineering, China University of Petroleum (East China), Qingdao 266580, PR China.
Traditional beat frequency quartz-enhanced photoacoustic spectroscopy (BF-QEPAS) are limited by short energy accumulation times and the necessity of a decay period, leading to weaker signals and longer measurement cycles. Herein, we present a novel optomechanical energy-enhanced (OEE-) BF-QEPAS technique for fast and sensitive gas sensing. Our approach employs periodic pulse-width modulation (PWM) of the laser signal with an optimized duty cycle, maintaining the quartz tuning fork's (QTF) output at a stable steady-state level by applying stimulus signals at each half-period and allowing free vibration in alternate half-periods to minimize energy dissipation.
View Article and Find Full Text PDFCrit Care
December 2024
Brain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK.
Background: Entropy quantifies the level of disorder within a system. Low entropy reflects increased rigidity of homeostatic feedback systems possibly reflecting failure of protective physiological mechanisms like cerebral autoregulation. In traumatic brain injury (TBI), low entropy of heart rate and intracranial pressure (ICP) predict unfavorable outcome.
View Article and Find Full Text PDFBiosens Bioelectron
December 2024
Cnam, SATIE Laboratory, UMR, CNRS 8029, 292 rue Saint Martin, 75003, Paris, France. Electronic address:
This study aims to demonstrate that redox couples, regardless of their electrical charges, are unnecessary for detecting and quantifying electroactive proteins using an electrochemical sensor functionalized with a molecularly imprinted polymer. Our approach involved designing a polydopamine imprinted biosensor for detecting bovine serum albumin as the model protein. Electrochemical measurements were conducted in a phosphate-buffered solution (PBS) and solutions containing the negatively charged hexacyanoferrate, the neutral ferrocene, or the positively charged hexaammineruthenium (III) probes.
View Article and Find Full Text PDFAm J Ophthalmol
December 2024
State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China. Electronic address:
Purpose: To investigate the ability to quantify fundus curvature and detect posterior staphyloma using widefield optical coherence tomography (OCT).
Design: Cross-sectional diagnostic evaluation.
Subjects And Participants: 205 highly myopic eyes of 205 participants.
Sports Med Arthrosc Rev
October 2024
Department of Anatomical, Histological, Forensic Medicine and Orthopaedics Sciences, Sapienza University of Rome, Rome, Italy; Istituto Clinico Ortopedico Traumatologico (ICOT), Latina, Italy.
Unlabelled: Several medical conditions (diabetes, cardio-vascular diseases, hypercholesterolemia etc.) or modifiable behavioral habits (smoking habit and alcohol assumption) capable of causing a damage to the peripheral microcirculation are considered potential risk factors for degeneration/tear of the rotator cuff. The aim of the study was to analyse and quantify how the association of multiple known risk factors is more effective than the predisposing action of a single factor.
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