Metal-dielectric multilayered metamaterials are proposed to work as wideband spectral-selective emitters/absorbers due to the topological change in isofrequency contour around the epsilon-near-zero point. By setting the transition at the border between the visible and IR ranges, the metal-dielectric multilayered metamaterials become good absorbers/emitters for visible light and good reflectors ...

Intrinsic absorbers are significant components of AGN environments that provide valuable information and interesting challenges. We present a very brief (and biased, and sometimes speculative) overview of intrinsic absorbers from the perspective of different absorption line classes. We also discuss ways of addressing and learning from the “problem” of partial coverage of the background light so...

Simulations of thermally broadened H i Ly α absorption arising in the warm-hot intergalactic medium Abstract. Recent far-ultraviolet (FUV) absorption line measurements of low-redshift quasars have unveiled a population of intervening broad H i Ly α absorbers (BLAs) with large Doppler parameters (b ≥ 40 km s −1). If the large width of these lines is dominated by thermal line broadening, the BLAs...

Citation: Yan L, Wang B and Kasal B (2017) Can Plant-Based Natural Flax Replace Basalt and E-Glass for Fiber-Reinforced Polymer Tubular Energy Absorbers? A Comparative Study on Quasi-Static Axial Crushing. Front. Mater. 4:42. doi: 10.3389/fmats.2017.00042 can Plant-Based natural Flax replace Basalt and e-glass for Fiber-reinforced Polymer Tubular energy absorbers? a comparative study on Quasi-s...

In order to study the size and shape of the absorbers that lie in front of the QSOs, in particular the Ly α forest, we present an analysis of 785 absorption lines in the spectra of five QSOs in close groupings: a pair (LB9605: 1517+2357 at z = 1.834 and LB9612: 1517+2356 at z = 1.903, with a separation of 102 arcsec between them) and a triplet (KP 76: 1623+2651A at z = 2.467, KP 77: 1623+2653 a...

With the goal of investigating the nature of Ovi absorbers at high redshifts, we study the effects of proximity to the background quasar. In a sample of sixteen quasars at zqso between 2.14 and 2.87 observed at high signal-to-noise and 6.6 km s −1 resolution with VLT/UVES, we detect 35 Ovi absorption-line systems (comprising over 100 individual Ovi components) lying within 8 000 km s of zqso. W...

In an automotive system, the vehicle suspension usually contributes to the vehicle's handling and braking for good active safety and driving pleasure and keeps the vehicle occupants comfortable and reasonably well isolated from road noise, bumps and vibrations. The design of vehicle suspension systems is an active research field in automotive industry (Du and Zhang, 2007; Guglielmino, et al., 2...