In their seminal paper on scattering by an inhomogeneous solid, Debye and coworkers proposed a simple exponentially decaying function for the two-point correlation function of an idealized class of two-phase random media. Such Debye random media, which have been shown to be realizable, are singularly distinct from all other models of two-phase media in that they are entirely defined by their one- and two-point correlation functions. To our knowledge, there has been no determination of other microstructural descriptors of Debye random media. In this paper, we generate Debye random media in two dimensions using an accelerated Yeong-Torquato construction algorithm. We then ascertain microstructural descriptors of the constructed media, including their surface correlation functions, pore-size distributions, lineal-path function, and chord-length probability density function. Accurate semianalytic and empirical formulas for these descriptors are devised. We compare our results for Debye random media to those of other popular models (overlapping disks and equilibrium hard disks) and find that the former model possesses a wider spectrum of hole sizes, including a substantial fraction of large holes. Our algorithm can be applied to generate other models defined by their two-point correlation functions, and their other microstructural descriptors can be determined and analyzed by the procedures laid out here.
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http://dx.doi.org/10.1103/PhysRevE.102.043310 | DOI Listing |
Objective: This study was conducted to investigate the social media practices and attitudes towards e-professionalism among undergraduate medical students in a medical college of Pakistan.
Methods: This cross-sectional study was conducted on 220 undergraduate medical students from 2 to final-year MBBS, at CMH Lahore Medical College from March to August 2022. After ethical approval, a printed questionnaire was distributed among students, selected by stratified random sampling technique.
Cureus
December 2024
Diabetes and Endocrinology, Prabhath Diabetes Care Centre, Udupi, IND.
This meta-analysis investigates the potential of allopurinol to prevent contrast-induced nephropathy (CIN), a common and serious complication of percutaneous coronary intervention (PCI). CIN is particularly prevalent among high-risk populations, including patients with chronic kidney disease (CKD) or acute coronary syndrome (ACS), where the administration of contrast agents can exacerbate renal injury. Allopurinol, a xanthine oxidase inhibitor, is known for its dual action in reducing oxidative stress and uric acid production, positioning it as a promising therapeutic candidate to mitigate CIN.
View Article and Find Full Text PDFObjective: This study evaluates the efficacy of homeopathic treatments for Acute Otitis Media (AOM) in children, comparing outcomes to standard allopathic treatments. Building on promising pilot study results that suggested homeopathy's non-inferiority, this multicenter trial aims to validate these findings and assess their broader clinical applicability.
Method: This open-label, randomized controlled trial was conducted on children (aged 02 to 12 years), suffering from acute otitis media.
J Environ Manage
January 2025
Hugh Downs School of Human Communication, United States.
This paper reports a theoretically-driven quantitative content analysis of news media discourse on climate change, its effects, and solutions to understand how US news discourse differs from widely supported scientific conclusions on global climate. Despite the dire warnings and calls to action, US public opinion on the causes and solutions to climate change remain divided. In the global context, the US's split views are anomalous and may be an artifact of the US media's coverage of the climate crisis.
View Article and Find Full Text PDFBMJ Open
January 2025
Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada.
Introduction: Non-adherence to tuberculosis (TB) treatment poses a significant challenge to effective TB management globally and is a major contributor to the emergence of multidrug-resistant TB. Although adherence to TB treatment has been widely studied, a comprehensive evaluation of the comparative levels of adherence in high- versus low-TB burden settings remains lacking. The objective of this systematic review and meta-analysis is to assess the levels of adherence to TB treatment in high-TB burden countries compared to low-burden countries.
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