Results 31 to 40 of about 865,228 (219)

Chemical, isotopic and gas composition of the first-year sea ice in 2013-2015 from the data of cores taken at the BARNEO drifting stations

Лëд и снег, 2019
As a result of the work performed at the BARNEO drifting stations (2013-2015 in the polar region of the Arctic ocean), a comprehensive testing was carried out and new data were obtained on the structure of one-year sea ice, its salinity, the distribution
A. I. Kizyakov, I. D. Streletskaya, A. V. Savenko, I. A. Kraynyukova, I. V. Tokarev   +4 more
doaj   +1 more source

A Model-Based RF Hand Motion Detection System for Shadowing Scenarios

IEEE Access, 2020
With the explosive growth of mobile computing, new modes of human-computer interaction (HCI) are emerging and becoming feasible. Compared to vision-based systems that require lighting, radio frequency (RF)-based hand motion detection systems are becoming
Zehua Dong, Fangmin Li, Julang Ying, Kaveh Pahlavan   +3 more
doaj   +1 more source

Crystal Structure of Fosfomycin Tromethamine, (C₄H₁₂NO₃)(C₃H₆O₄P), from Synchrotron Powder Diffraction Data and Density Functional Theory

Crystals, 2019
The crystal structure of fosfomycin tromethamine has been solved and refined using synchrotron X-ray powder diffraction data, and optimized using density functional techniques.
Zachary R. Butler, James A. Kaduk, Amy M. Gindhart, Thomas N. Blanton   +3 more
doaj   +1 more source

Squiral Diffraction [PDF]

, 2013
The Thue-Morse system is a paradigm of singular continuous diffraction in one dimension. Here, we consider a planar system, constructed by a bijective block substitution rule, which is locally equivalent to the squiral inflation rule. For balanced weights, its diffraction is purely singular continuous. The diffraction measure is a two-dimensional Riesz
Grimm, Uwe, Baake, Michael
openaire   +2 more sources

Comparison and analysis of wavelength calibration methods for prism – Grating imaging spectrometer

Results in Physics, 2019
To identify spectral information obtained from the prism - grating imaging spectrometer, it is essential to know the center wavelength for each spectral channel.
Ci Sun, Mingjia Wang, Jicheng Cui, Xuefeng Yao, Jianjun Chen   +4 more
doaj   +1 more source

Diffraction Impact onto Regularized Plasma Channel Formation by Femtosecond Laser Filamentation

Photonics, 2023
Focused femtosecond beam filamentation after amplitude masks has been studied experimentally and numerically. We deduced conditions (energy per hole, diameter and geometrical composition of holes, focal length) providing for the formation of the ...
Ekaterina Mitina, Daria Uryupina, Daniil Shipilo, Irina Nikolaeva, Nikolay Panov, Roman Volkov, Olga Kosareva, Andrei Savel’ev   +7 more
doaj   +1 more source

Electromagnetic wave diffraction on a “strip grating – ferromagnetic half-space” composite structure: surface-wave resonances [PDF]

Радиофизика и электроника, 2020
Subject and Purpose. A theoretic study is given to the diffraction of a monochromatic plane E-polarized electromagnetic wave on a composite structure like a periodic strip grating bordering a half-space filled with a lossy homogeneous gyrotropic ...
A.V. Brovenko, P.N. Melezhik, А.Ye. Poyedinchuk, А.S. Troschylo   +3 more
doaj   +1 more source

The Wiener-Hopf solution of the isotropic penetrable wedge problem: diffraction and total field [PDF]

, 2011
The diffraction of an incident plane wave by an isotropic penetrable wedge is studied using generalized Wiener-Hopf equations, and the solution is obtained using analytical and numerical-analytical approaches that reduce the Wiener-Hopf factorization to ...
Vito Daniele, Guido Lombardi, Lombardi, Guido, Daniele, Vito   +3 more
core   +1 more source

Fourier transform infrared spectrophotometry and X-ray powder diffractometry as complementary techniques in characterizing clay size fraction of kaolin

Journal of Applied Sciences and Environmental Management, 2005
This study aimed at demonstrating complementary roles offered by both Fourier transform infrared (FTIR) spectrophotometry and x-ray powder diffraction (XRPD) techniques in characterizing clay size fraction of kaolins.
Georges-Ivo E Ekosse
doaj   +1 more source

A Comment on the Relation between Diffraction and Entropy

, 2012
Baake M, Grimm U. A Comment on the Relation between Diffraction and Entropy. Entropy. 2012;14(12):856-864.Diffraction methods are used to detect atomic order in solids.
Uwe Grimm, Grimm, Uwe, Baake, Michael, Michael Baake   +3 more
core   +1 more source