Reversibility and repeatability of the tensile deformation response in holographic sensors formed by highly stretchable acrylamide polymers have been investigated. The diffraction spectrum of the volume grating was used to characterize the deformation. Two-way shifts of peak wavelengths, i.e., redshift in transmission and blueshift in reflection, were observed in stretching. The reduction of the average refractive index provided experimental evidence for the physical mechanism. To achieve a linear response and high repeatability, the limitation of tensile displacement was determined as 5.0 mm, and the relevant deformation is 6.6%. This value can be considered as a boundary between the elastic and plastic deformations in samples with thicknesses less than 120 μm. There was a totally linear relation between peak wavelength and deformation within the elastic range. The reversible and repeatable deformation response validated the practical applicability of a holographic sensor.
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http://dx.doi.org/10.1364/AO.58.002042 | DOI Listing |
Viruses
January 2025
Department of Biomedical & Nutritional Sciences, Zuckerberg College of Health Sciences, University of Massachusetts Lowell, Lowell, MA 01854, USA.
Hepatitis E Virus (HEV) is a globally widespread pathogen that causes acute hepatitis infection. Beyond hepatic pathogenesis, HEV has been proven to cause several extrahepatic manifestations, such as neurological, renal, and hematological manifestations. It was also associated with mortality in pregnant females.
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January 2025
Institute of Science and Innovation in Mechanical and Industrial Engineering (INEGI), FEUP Campus, Rua Dr. Roberto Frias 400, 4200-465 Porto, Portugal.
The present work constitutes the initial experimental effort to characterise the dynamic tensile performance of basalt fibre grids employed in TRM systems. The tensile behaviour of a bi-directional basalt fibre grid was explored using a high-speed servo-hydraulic testing machine with specialised grips. Deformation and failure modes were captured using a high-speed camera.
View Article and Find Full Text PDFPharmaceuticals (Basel)
January 2025
Division of Natural and Applied Sciences, Duke Kunshan University, Kunshan 215316, China.
Background: ) is a plant with known medicinal properties, and its extracts have shown promise as potential anti-cancer agents. This study aimed to evaluate the nematocidal effects of L. patula extracts and investigate their impact on germline development, DNA damage responses, and apoptosis in ), a model organism for studying these processes.
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January 2025
The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Midlothian EH25 9RG, UK.
The domestic dog () is a competent host for () infection but no ante mortem diagnostic tests have been fully validated for this species. The aim of this study was to compare the performance of ante mortem diagnostic tests across samples collected from dogs considered to be at a high or low risk of sub-clinical infection. We previously tested a total of 164 dogs at a high risk of infection and here test 42 dogs at a low risk of infection and 77 presumed uninfected dogs with a combination of cell-based and/or serological diagnostic assays previously described for use in non-canid species.
View Article and Find Full Text PDFSensors (Basel)
January 2025
Yunnan Earthquake Agency, Kunming 650224, China.
The strong motion records collected in full-scale structures provide the ultimate evidence of how real structures, in situ, respond to earthquakes. This paper presents a novel method for visualization, in three dimensions (3D), of the collective motion by a dense array of sensors in a building. The method is based on one- and two-dimensional biharmonic spline interpolation of the motion recorded by multiple sensors on the same or multiple floors.
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