Acoustic properties of the metamaterial graded absorber, also known as ``acoustic black hole'', are studied in linear regime. The absorber consists thin metallic circular plates, each with a central perforation, separated by annular air cavities. Radius perforation plate is gradually decreasing distance from to front surface, forming channel staircase radius profile. A semi-analytical equivalen...

The aim of this systematic review was to determine if eccentric exercise is superior to concentric exercise in stimulating gains in muscle strength and mass. Meta-analyses were performed for comparisons between eccentric and concentric training as means to improve muscle strength and mass. In order to determine the importance of different parameters of training, subgroup analyses of intensity o...

Abstract The climate of a terrestrial exoplanet is controlled by the type host star, orbital configuration and characteristics atmosphere surface. Many rocky exoplanets have higher eccentricities than those in Solar System, about 18% planets with masses <10 M⊕ e > 0.1. Underexplored are implications such high on atmosphere, climate, potential habitability planets. We use WACCM6, s...

The detection of gravitational-wave signals from coalescing eccentric binary black holes would yield unprecedented information about the formation and evolution compact binaries in specific scenarios, such as dynamical dense stellar clusters three-body interactions. searches by ground-based interferometers, LIGO Virgo, rely on analytical waveform models for quasicircular orbits. Eccentric merge...

The dynamical tide can play an important role in the orbital motion of close eccentric double white dwarf binaries. As launching space-based gravitational-wave detector, Laser Interferometer Space Antenna (LISA), is just around corner, detection gravitational wave signals from such systems anticipated. In this paper, we discuss influence on orbits, focusing effect periastron precession. We show...

Torque steadiness and low-frequency fatigue (LFF) were examined in the human triceps brachii after concentric or eccentric fatigue protocols. Healthy young males (n=17) performed either concentric or eccentric elbow extensor contractions until the eccentric maximal voluntary torque decreased to 75% of pre-fatigue for both (concentric and eccentric) protocols. The number of concentric contractio...

BACKGROUND Because muscle fascicle behavior affects to the force-generating capability, understanding of muscle fascicle length changes during dynamic movements is important. Preactivation may affect the muscle fascicle length changes, especially in the case of eccentric contraction. However, its influence has not been clarified. To this end, muscle fascicle behavior during eccentric contractio...