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Active, Responsive, Multifunctional, and Ordered-Materials Research (ARMOR) Laboratory, Department of Structural Engineering, University of California San Diego, La Jolla, CA 92093, USA.
Weight training is widely adopted and highly effective for enhancing both muscular strength and endurance. A popular weightlifting exercise is the deadlift, which targets multiple muscle groups including the lower back, glutes, and hamstrings. However, incorrect technique (i.
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Technologies that describe the biomechanics of the eye are of emerging importance in glaucoma and keratoconus. A defect in the wall of the eye would be expected to affect biomechanics, resulting in the dispersion of mechanical energy and more viscous rather than elastic behaviour. Here, a mildly myopic man in his 50s was noted to have a deep conduit beside the right optic disc which appeared to pass posteriorly to the optic nerve sheath or orbit.
View Article and Find Full Text PDFLipid demixing reduces energy barriers for high-curvature vesicle budding.
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Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Prague, Czech Republic; Institute of Chemistry, The Fritz Haber Research Center, The Harvey M. Kruger Center for Nanoscience & Nanotechnology, The Hebrew University, Jerusalem, Israel. Electronic address:
Under standard physiological conditions, budding relies on asymmetries, including differences in leaflet composition, area, and osmotic conditions, and involves large curvature changes in nanoscale lipid vesicles. So far, the combined impact of asymmetry and high curvatures on budding has remained unknown. Here, using the continuum elastic theory, the budding pathway is detailed under realistic conditions.
View Article and Find Full Text PDFThe shape and extent of the plastic zone can effectively reflect the degree of deformation and failure of the surrounding rock. By applying complex variable functions and the theory of elasticity, a mechanical model for the surrounding rock of a rectangular roadway is established. The analytical solution for the stress in the surrounding rock of a rectangular roadway under a non-uniform stress field is derived, and the spatial stress distribution pattern in the surrounding rock of the rectangular roadway is obtained.
View Article and Find Full Text PDFNonlinear parametric models of viscoelastic fluid flows.
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Department of Mechanical Engineering, University of Washington, Seattle, WA, USA.
Reduced-order models (ROMs) have been widely adopted in fluid mechanics, particularly in the context of Newtonian fluid flows. These models offer the ability to predict complex dynamics, such as instabilities and oscillations, at a considerably reduced computational cost. In contrast, the reduced-order modelling of non-Newtonian viscoelastic fluid flows remains relatively unexplored.
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