Abstract We ask the question “what happens to Bloch waves in gratings synthetically moving at near speed of light?”. First we define a constant refractive index (CRI) model which remain well defined as they break light barrier, then show their dispersion rotating through 360° from negative positive and back again. Next introduce effective medium approximation (EMA) refine it into 4-wave proves ...

ABSTRACT Stratigraphic and thermochronologic data are used to study the processes that shaped topography of central Apennines Italy. These part a major, active mountain belt in center Mediterranean area, where several subduction zones control complex topography. The were by contraction at front accretionary wedge overlying subducting Adria microplate followed extension rear response eastward sl...

objective: the study evaluated the efficacy of oral calcium carbonate supplement on leg pain in pregnancy and nursing period. materials and methods: a total number of 176 women at third trimester of pregnancy or nursing period till to one year after delivery with complaint of leg pain, low back pain (lbp), and posterior pelvic pain (ppp) were evaluated for distinct primary causes and were exclu...

Hydroxyapatite is a biocompatible ceramic and reinforcement for bone implantations. SEVA/HAP composite content HAP filler with difference particle sizes were designed. Mechanical tests like tensile modulus, UTS, strain at break and biodegradation were investigated. Results illustrated much increase tensile modulus of composites content HAP nano powders ratio to micro powders. Also UTS analysis ...

Aims: Motocross consists of two races 30 min with a break in between. Recovery between is paramount to performance, this study aimed compare the effects active and passive recovery motocross on riding performance. Methods: Thirteen elite non-elite racers performed 1 h break, twice two-week interval. Between (20 ergometer cycling at 60% HRmax) or (no activity) were executed randomized order. Lap...

Hydroxyapatite is a biocompatible ceramic and reinforcement for bone implantations. SEVA/HAP composite content HAP filler with difference particle sizes were designed. Mechanical tests like tensile modulus, UTS, strain at break and biodegradation were investigated. Results illustrated much increase tensile modulus of composites content HAP nano powders ratio to micro powders. Also UTS analysis ...

Abstract This paper attempts to re-investigate the catching-up (stochastic convergence) hypothesis among the selected 16 OECD countries applying the time series approach of convergence hypothesis with annual data over one century. To reach this aim, we propose a model which specifies a trend function, incorporating both types of structural breaks – that is, sharp breaks and smooth shifts usin...