Concrete condition-assessing penetrometers need to be able to distinguish between making contact with a hard (concrete) surface as opposed to a semi-solid (corroded concrete) surface. We investigated whether different shaped tips of a cylindrical penetrometer were better than others at maintaining contact with concrete and not slipping. We designed a range of simple symmetric tip shapes, controlled by a single superellipse parameter. We performed a finite element analysis of these parametric models in SolidWorks before machining in stainless steel. We tested our penetrometer tips on a concrete paver cut to four angles at 20∘ increments. The results indicate that the squircle-shaped tip had the least slippage when used for concrete condition assessment.
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http://dx.doi.org/10.3390/s22030737 | DOI Listing |
BMC Med Educ
December 2024
Department of Social and Preventive Medicine, Center for Public Health, Medical University of Vienna, Vienna, Austria.
Background: Cancer remains a critical global health issue requiring a comprehensive interdisciplinary approach for effective treatment. Interprofessional education (IPE) is essential for overcoming barriers to collaboration among healthcare professionals and fostering efficient teamwork in cancer care.
Objective: This systematic scoping review aims to explore the role of IPE in enhancing interprofessional collaboration within cancer care by mapping and synthesizing the implementation, impact, and evaluation strategies of patient-centered IPE programs in this field.
Materials (Basel)
December 2024
College of Geosciences and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450046, China.
In this paper, uniaxial compression tests and numerical simulation were conducted on specimens of five sizes, and the influence of specimen size on the failure characteristics and mechanics of specimens was studied. The results show that when the bottom size of the specimen is the same, with the increase in the height-width ratio of the specimen size (from 1 to 3), the peak stress of the specimen gradually decreases, but when the decrease is greatly reduced, the concentration of contact force chains in the model increases. The failure mode of the specimen changes from tensile failure to shear failure, and the distribution of cracks changes from multiple vertical cracks uniformly to a concentrated main oblique crack.
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November 2024
Institute of Civil Engineering, Warsaw University of Life Sciences-SGGW, 166 Nowoursynowska Str., 02787 Warsaw, Poland.
This study investigates the potential use of recycled concrete aggregate (RCA), fly ash (FA), and their mixture (RCA+FA) as backfill materials for shallow vertical ground heat exchangers (GHEs). Granulometric, aerometric, and Proctor compaction tests were conducted to determine soil gradation, the void ratio, and the optimal moisture content (OMC) for maximum dry density. RCA demonstrated efficient compaction at lower moisture levels, while FA required higher moisture to reach maximum density.
View Article and Find Full Text PDFFood Microbiol
March 2025
University of Guelph, School of Engineering, 50 Stone Rd E, Guelph, ON, N1G 2W1, Canada.
Plasma-activated water (PAW) has been shown to have antimicrobial properties, making it a promising tool for surface decontamination. This study evaluated the ability of PAW generated from high voltage atmospheric cold plasma to remove Salmonella from common surfaces (stainless steel (SS), polyvinyl chloride (PVC), concrete, and wood) found in poultry houses. PAW was generated by exposing distilled water to atmospheric cold plasma in 80% humid air at 90 kV and 60 Hz for 30 min.
View Article and Find Full Text PDFSci Rep
November 2024
Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Gdansk, Poland.
The research necessity stems from the need to understand and evaluate the performance of Two-Stage Concrete (TSC) under triaxial compression conditions, as prior studies have predominantly focused on uniaxial and biaxial testing of conventional concrete (CC). This study represents the first comprehensive investigation into the triaxial compressive strength and related mechanical properties of TSC, addressing a critical gap in the existing body of literature. Three different mixtures were prepared, including one CC and two TSC variants with varying cement content.
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