Abstract The liquid crystal director distribution is determined for a confined chiral nematic slab. The molecular director distribution of the field-controlled chiral nematic slab is directly calculated. The director profiles for the tilt and the twist angles, under different applied fields, are calculated in the slab with weak boundary conditions. Then, the dependence of the threshold field on...

In this paper, properties of slab deformation in sizing press mill as one of the slab reduction processes in hot rolling mills have been evaluated using the elastoviscoplastic finite element method with explicit formulation. Effect of prarameters such as initial slab width and thickness, reduction, feed pitch, and anvil speed on factors such as dogbone formation, head and tail fishtail profile,...

Abstract A plasma density hole was created in the ionosphere by a rocket launch from Cape Canaveral, Florida near local sunset on 30 August 2020, which is called exhaust depletion (RED). The persisted for several hours into night and observed total electron content (TEC) maps, Global‐scale Observations of Limb Disk (GOLD) imager, multiple low‐earth‐orbit satellites. RED nightglow pit GOLD 135.6...

Convective hot air drying of potato slabs and the effects of drying air temperature and slab thickness have been investigated using a batch tray dryer. The temperature of drying chamber varied in four levels (50, 60, 70 and 80°C) and the slab thickness changed in three levels (0.5, 1 and 1.5 m). For the prediction of effective moisture diffusivity (D ), the conventional Fick’s diffusion model w...

[1] Imaging of seismic velocity discontinuities along a 3000 km profile across central South America at 20 S suggests that the depth variations of the 410-km (d410) and 660-km (d660) discontinuities are closely associated with the high-velocity Nazca slab and juxtaposed low-velocity oceanic mantle beneath the slab. The mantle transition zone thickness ranges from 220 km in the oceanic mantle to...

We study the second-harmonic generation in left-handed metamaterials with a quadratic nonlinear response. We demonstrate a novel type of the exact phase matching between the backward propagating wave of the fundamental frequency and the forward propagating wave of the second harmonics. We show that this novel parametric process can convert a surface of the left-handed metamaterial into an effec...

We report experimental observations of the convection-driven fingering instability of an iodate-arsenous acid chemical reaction front. The front propagated upward in a vertical slab; the thickness of the slab was varied to control the degree of instability. We observed the onset and subsequent nonlinear evolution of the fingers, which were made visible by a pH indicator. We measured the spacing...

For a long time, the equivalent ionospheric slab thickness ? has remained in shadow of main parameters: maximum density, NmF2 (or critical frequency, foF2), and total electron content. Empirical global models have been developed for these two parameters. Recently, several appeared concurrently. This paper compares Neustrelitz model (NSTM), with ?(IRI-Plas) IRI-Plas model, ?(Appr) approximation ...

In-situ plasma density (Ne) and Over-Satellite Electron Content (OSEC) measured at Low-Earth-Orbit (LEO) are basic parameters for analyzing ionospheric plasma. In this study, we calculate the ratio of OSEC to Ne (OSEC-to-Ne ratio; α) by Swarm in daytime topside, which is analogous traditional slab thickness ionosphere. Dependence α on latitude, local time, season, solar activity generally agree...