Results 21 to 30 of about 1,132,543 (299)

INCREASING THE EFFICIENCY OF THE SURFACE-MOUNTED ULTRASONIC ELECTROMAGNETIC-ACOUSTIC TRANSDUCER ON ACCOUNT OF THE MAGNETIC FIELD SOURCE

open access: yesТехнічна електродинаміка, 2023
Model studies were carried out using the COMSOL Multiphysics package, aimed at ensuring the forming of a permanent magnet magnetic field at a considerable distance to a ferromagnetic product from its pole, which is necessary to create efficient portable ...
Г.М. Сучков   +4 more
doaj   +1 more source

Preferred orientation of hydroxylapatite in the scales and fins of seawater Lateolabrax japonicus determined using XRD pole figures and ODF

open access: yes工程科学学报, 2017
Pole figures measured using X-ray diffractometry were used to analyze the orientation of crystalline hydroxylapatite (HAP) in the scales and fins of seawater Lateolabrax japonicus.
YUAN Lei   +4 more
doaj   +1 more source

Avaliação da orientação molecular de moldados de polipropileno utilizando figuras de pólo obtidas por difração de raios X Evaluation of the molecular orientation of injection molded polypropylene using X-ray pole figures

open access: yesPolímeros, 2007
Neste trabalho, avaliou-se a influência do perfil de velocidades de injeção utilizado durante a etapa de preenchimento na orientação molecular da fase cristalina, de amostras de polipropileno moldadas por injeção. As medidas de orientação molecular foram
Álvaro M. Almeida   +2 more
doaj   +1 more source

Design and trade-offs of a pole-sitter mission [PDF]

open access: yes, 2013
This paper provides a mission analysis and systems design of a pole-sitter mission, i.e. a spacecraft that is continuously above an Earth Pole, and can provide real-time, continuous and hemispherical coverage of the polar regions.
Heiligers, Jeannette   +2 more
core   +4 more sources

Mission analysis and systems design of a near-term and far-term pole-sitter mission [PDF]

open access: yes, 2014
This paper provides a detailed mission analysis and systems design of a near-term and far-term polesitter mission. The pole-sitter concept was previously introduced as a solution to the poor temporal resolution of polar observations from highly inclined,
Biggs, James   +3 more
core   +4 more sources

3D MORPHOLOGICAL ANALYSIS OF COMPOSITE MATERIALS WITH AGGREGATES OF SPHERICAL INCLUSIONS

open access: yesImage Analysis and Stereology, 2011
Composite materials containing aggregates of spherical inclusions are studied from 3D images obtained by X-ray microtomography. Using two point statistics in different directions, and the empirical distribution of orientations of pairs of inclusions ...
Arnaud Delarue, Dominique Jeulin
doaj   +1 more source

Changer in the texture orientation of electrolytic nickel by cold air plasma

open access: yesЛитьë и металлургия, 2020
The effects of cold air plasma influence on the change in the microstructure, stress state and texture of the cathode nickel brand H-1 were studied. By the method of target metallography it has been established that the microstructure does not change ...
A. G. Anisovich   +4 more
doaj   +1 more source

Race to the Pole: Matthew Henson, Arctic Explorer

open access: yesAmerican Studies in Scandinavia, 2022
In his memoir, A Negro Explorer at the North Pole (1912), Matthew Henson describes the toll of his and Peary’s race to the Pole. This record of the 1908-09 Arctic expedition complicates established understandings of the “Dash to the Pole” and his own ...
Clara Junker
doaj   +1 more source

Crystallographic orientation and grain size data obtained by Electron Back Scatter Diffraction (EBSD) on quartz analysed in mylonitic quartzite from the Island of Elba (Italy)

open access: yesData in Brief, 2020
Raw Electron Back Scatter Diffraction (EBSD) data on deformed quartz from a mylonitic quartzite sample of the Calamita Schists (Island of Elba, Italy) is available at https://doi.org/10.17632/8c937t6zs4.32.
Samuele Papeschi, Giovanni Musumeci
doaj   +1 more source

A database of plagioclase crystal preferred orientations (CPO) and microstructures – implications for CPO origin, strength, symmetry and seismic anisotropy in gabbroic rocks [PDF]

open access: yesSolid Earth, 2013
This study presents a unique database of 172 plagioclase Crystallographic Preferred Orientations (CPO) of variously deformed gabbroic rocks. The CPO characteristics as a function of the deformation regime (magmatic or crystal-plastic) are outlined and ...
T. Satsukawa   +5 more
doaj   +1 more source

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