Channel estimation for millimeter wave (mmWave) systems is challenging due to their large antenna arrays.Owing to the sparse scattering nature of the mmWave channel, channel estimation can be performed by estimating the directions and the gains of paths.Most existing schemes assume that a wideband mmWave channel exhibits a common sparsity in the fr
Over the last decade, our understanding of the physiological role of senescent cells has drastically evolved, from merely indicators of cellular stress and ageing to having a central role in regeneration and repair.Increasingly, studies have identified senescent cells and the senescence-associated secretory phenotype (SASP) as being critical in the
To investigate the mechanism of noise generation by a train-car gap, which is one of a major source of noise in Shinkansen trains, experiments were Hutch carried out in a wind tunnel using a 1/5-scale model train.We measured velocity profiles of the boundary layer that approaches the gap and confirmed that the boundary layer is turbulent.We also me
Photobacterium profundum is a cosmopolitan marine bacterium capable of growth at low temperature and high hydrostatic pressure.Multiple strains of P.profundum have been isolated from different depths of the ocean and display remarkable differences in their physiological responses to pressure.The genome sequence of the deep-sea piezopsychrophilic st
In the rotary steering Chairs system of oil drilling, both power and data transmission are needed.This paper presents a parallel power and data transmission method for a rotating steering system with output voltage control.To reduce the size of the system, power and data are transmitted through the same rotational coupling mechanism.A power transfe