The purpose of this study was to compare the acute effect of box squats with barbell (BBSquat), box squats with elastic resistance bands (BandSquat), and static stretches (SStretch) on external power during a 20-kg weighted jump squat. Twelve male athletes performed each of the 3 warm-up protocols on separate occasions in a randomized order. Weighted jump squat power was assessed using a linear...

Recent advances in the development of the atmospheric correction models made the retrieval of surface reflectance spectra of coastal waters from the top of atmosphere signals more accurate and inspired the further development of the coastal retrieval algorithms. This includes algorithms which employ the red and NIR bands and which are less sensitive to the absorption of the colored dissolved or...

NUMEROUS MODELS have been constructed to aid teaching respiratory mechanics. A simple model using a syringe and a water-filled bottle has been described by Thomas Sherman to explain inspiration and expiration (4). The elastic recoil of the chest wall and lungs has been described using a coat hanger (1) or by using rods and rubber bands (3). A more complex two-component model has also been descr...

We report a fully reversible and robust shape-memory effect in a two-dimensional nanoscale periodic structure composed of three steps, the elastic instability governing the transformation, the plasticity that locks in the transformed pattern as a result of an increase in glass transition temperature (T(g)), and the subsequent elastic recovery due to the vapor-induced decrease in T(g). Solvent s...

s:2127:"Varicocele is the most common pathologic finding in men in infertility study programs and is the most treatable cause of male infertility. Its correction is performed by different surgical techniques, none of which is yet acknowledged as the "gold standard." Some of them, especially the microsurgical ones, are very time consuming and thus expensive; furthermore, all varicocele surgery i...

Dupuytren contracture of the proximal interphalangeal (PIP) joint can be reversed by an extension torque transmitted from an external device, the Digit Widget, by skeletal pins to the middle phalanx. This extension torque, generated by the same elastic bands dentists use to align teeth, gradually restores length to soft tissues palmar to the PIP joint's axis of rotation. Simultaneously, tissues...

In this work, we investigate non-Hermitian elastic waveguides with periodically applied proportional feedback efforts, implemented through piezoelectric sensors and actuators. Using onedimensional spectral models for longitudinal motion, it is shown that dispersion diagrams of family structures exhibit non-reciprocal imaginary frequency components, manifesting as wave attenuation or amplificati...