To enable the mechanistic description of mixing larger particles in gas-fluidized beds models (e.g. fuel combustors), knowledge about rheology bed emulsion is required. Here, it crucial to determine drag on large fuel-alike particles. This work presents experimental fate 13 different solid spheres falling or rising through a air and glass beads at minimum fluidization. The trajectories tracer a...

We carry out the first investigation of entanglement and mutual information harvesting protocols for detectors freely falling into a black hole. Working in $(1+1)$-dimensional Schwarzschild hole spacetime, we consider two pointlike Unruh-DeWitt (UDW) different combinations free-falling static trajectories. Employing generalization relative velocity suitable curved spacetimes, find that amount c...

A generalization of Lax-Hopf formula in the case when the Lagrangian depends not only on the velocity, but also on time and velocity has been provided in [15, Chen Luxi]. On the other hand, Cournot maps have been introduced and studied in [6, Aubin & Chen Luxi] for associating with terminal time and state a temporal window on which starts at least one evolution governed by a differential inclus...

The Karakoram Anomaly has been intensively investigated, but the factors that control this anomaly, such as glacier velocity, topography, and mass balance, remain poorly understood. To improve our understanding of balance Glacier, in study, spatiotemporal variability four velocities Hunza Basin range were surveyed using co-registration optically sensed images correlation (COSI-Corr) on Landsat ...

The settling dynamics of spherical and elliptical particles in a viscous Newtonian fluid are investigated numerically using a finite difference technique. The terminal velocity for spherical particles is calculated for different system sizes and the extrapolated value for an infinite system size is compared to the Oseen approximation. Special attention is given to the settling and tumbling moti...

Parkinson's disease is a chronically developing neurodegenerative disease showing typical motor symptoms of the following triad: resting tremor, freezing of gait, and bradykinesia-hypokinesia. In the present study, we investigated the effects of a communal exercise program, using the visual and auditory feedback provided by a smart application, to assess gait ability, fear of falling, and fall ...

In this paper, a Time-to-go Polynomial Guidance (TPG) law satisfying impact angle constraints for missiles of time-varying velocity against stationary target is investigated. The guidance law assumes the magnitude of guidance commands as a polynomial function of time-to-go with two unknown coefficients. The coefficients are determined to satisfy the two terminal constraints, which are the termi...

Hamel’s equations are an analogue of the Euler–Lagrange equations of Lagrangian mechanics when the velocity is measured relative to a frame which is not related to system’s local configuration coordinates. The use of this formalism often leads to a simpler representation of dynamics but introduces additional terms in the equations of motion. The paper elucidates the variational nature of Hamel’...

We report measurements concerning the propagation of femtosecond laser pulses in fused silica with a wavelength at 1.9 μm falling in the negative group velocity dispersion region. Under sub-GW excitation power, stable filaments are observed over several cm showing the emergence of nonspreading pulses both in space and time. At higher excitation powers, one observes first multiple pulse splittin...