Rehabilitation, strengthening, and retrofitting of existing masonry buildings represent an important challenge for the construction engineering field. Often, slab strengthening/retrofitting is performed by replacing existing timber and steel beams or by adding new beams to improve the slab load-carrying capacity. The computation of the stresses at the beam-masonry interface (i.e., the contact pressure) is crucial to properly design the beam support length, preventing local failure of masonry and beam. This paper presents a simple analytical procedure to compute the contact pressure at the beam-masonry interface. The analytical procedure is validated by comparison between analytical and corresponding numerical results obtained by finite element modeling. Different types of beam (solid and laminated timber beams and steel beams) were considered, as well as different support conditions (simply resting on the wall considering different support lengths or fully embedded). The results obtained show that the method proposed is simple and reliable, which makes it suitable for professional practice.
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http://dx.doi.org/10.3390/ma14237131 | DOI Listing |
J Exp Biol
January 2025
Laboratory of Function and Evolutionary Morphology, FOCUS, Université de Liège, Liège, Belgique.
The inner ear of teleost fishes is known to serve both auditory and vestibular functions. Many studies have compared otoliths from different species and attempted to understand the observed differences within the light of environmental factors. However, experimental data on how otoliths could adapt are scarce.
View Article and Find Full Text PDFCureus
December 2024
Obstetrics and Gynecology, F. Edward Hebert School of Medicine, Uniformed Services University, Bethesda, USA.
Background: Depending upon their organization and content, medical conferences can enhance wellness or create additional stress for physician attendees. The objective of our study was to examine the degree to which major medical specialty and subspecialty conferences incorporate wellness into their meeting programs.
Methods: We performed a cross-sectional study of major medical conferences occurring in 2023 representing specialties and subspecialties with the greatest number of active physicians.
Front Oncol
January 2025
Nursing Department, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Introduction: Physical activity is becoming more important in cancer patient care. However, there are limited studies investigating physical activity levels in cancer survivors after pancreaticoduodenectomy. This study aims to assess the present status of physical activity levels in cancer survivors after pancreaticoduodenectomy and whether perioperative metrics and length of follow-up have an impact on physical activity levels in survivorship.
View Article and Find Full Text PDFChem Sci
January 2025
School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
The process of proton translocation in , triggered by light, is powered by the photoisomerization of all--retinal in bacteriorhodopsin (bR). The primary events in bR involving rapid structural changes upon light absorption occur within subpicoseconds to picoseconds. While the three-state model has received extensive support in describing the primary events between the H and K states, precise characterization of each excited state in the three-state model during photoisomerization remains elusive.
View Article and Find Full Text PDFJACC Case Rep
January 2025
Center for Coronary Artery Disease, Minneapolis Heart Institute Foundation, Minneapolis, Minnesota, USA.
Coronary computed tomography angiography (CTA) analysis can help in the planning of percutaneous coronary intervention (PCI). Fractional flow reserve derived from coronary CTA (FFR), coronary CTA-derived regional myocardial mass, and FFR virtual PCI planner can facilitate decisions concerning sheath and guide catheter selection, stent lengths on the basis of predicted post-PCI FFR, optimal fluoroscopic angles, evaluation of provisional vs 2-stent bifurcation PCI techniques, and assessment of the magnitude of jeopardized myocardial mass in cases with side branch compromise. This case series illustrates the emerging opportunities for coronary CTA-based planning of bifurcation PCI.
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