Results 41 to 50 of about 12,197,228 (152)

Local properties and statistics of phase singularities in generic wavefields

open access: yes, 2001
This paper is a review and extension of recent work by Berry and Dennis (Proc R Soc Lond A456, pp2059, 2000; A457, pp141-155, 2001), where the geometric structure of phase singularities (wave dislocations) in waves is studied, particularly for ...
Dennis, MR   +3 more
core   +1 more source

Impact of PWM strategies on RMS current of the DC-link Voltage Capacitor of a dual-three phase drive [PDF]

open access: yes, 2014
The major drawback of usual dual three-phase AC machines, when supplied by a Voltage Source Inverter (VSI), is the occurrence of extra harmonic currents which circulate in the stator windings causing additional losses and constraints on the power ...
ROUHANA, Najib   +5 more
core   +1 more source

Turbulent bubbly flow in pipe under gravity and microgravity conditions [PDF]

open access: yes, 2012
Experiments on vertical turbulent flow with millimetric bubbles, under three gravity conditions, upward, downward and microgravity flows (1g, -1g and 0g), have been performed to understand the influence of gravity upon the flow structure and the phase ...
Colin, Catherine   +2 more
core   +1 more source

THE STUDDING OF INFLUENCE OF GAS CONCENTRATION IN A VACUUN CHAMBER ON MICROSTRUCTURE AND PHISICO-MECHANICAL PROPERTIES OF FILMS BASED ON THE Ti-Al-N [PDF]

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2012
The effect of nitrogen ( N2 ) in the gas mixture on the phase composition, surface morphology, structural characteristics and physico-mechanical properties of films based on Ti-Al-N, formed by pulsed magnetron sputtering has been investigated ...
T.O. Soshina
doaj  

Properties of length-apodized phase-shifted lpgs operating at the phase matching turning point [PDF]

open access: yes, 2012
The characteristics of length-apodized phase-shifted fiber optic long period gratings with full and partial nanostructured coatings have been explored theoretically and experimentally.
Tatam, Ralph P.   +2 more
core   +1 more source

Knotted and linked phase singularities in monochromatic waves

open access: yes, 2001
Exact solutions of the Helmholtz equation are constructed, possessing wavefront dislocation lines (phase singularities) in the form of knots or links where the wave function vanishes ('knotted nothings').
Dennis, MR   +7 more
core   +1 more source

Research progress in high entropy alloy matrix composites

open access: yesCailiao gongcheng, 2023
High entropy alloys have been proposed in 2004, which are expected to be widely used in aerospace, petrochemical and other fields due to their excellent properties compared with the traditional alloys, and have become a hot spot in current metal material
CHEN Gang   +3 more
doaj   +1 more source

316L Austenitic Stainless Steel Deformation Organization and Nitriding-Strengthened Layer Relationships

open access: yesApplied Sciences
The organizational development of 316L austenitic stainless steel was examined in this work under various levels of compression deformation (0, 10%, 20%, 30%, 40%, and 50%) and thoroughly investigated at multiple scales using SEM and EBSD techniques. The
Xuedi Zhang   +4 more
doaj   +1 more source

PI-ADFM: Enhancing Multimodal Remote Sensing Image Matching Through Phase-Integrated Aggregated Deep Features

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Geometric distortions and significant nonlinear radiometric differences in multimodal remote sensing images (MRSIs) introduce substantial noise in feature extraction.
Haiqing He   +5 more
doaj   +1 more source

On the thermal evolution of the crystal structure of SrTeO3. Part III. The gamma-phase of SrTeO3 at 583 K

open access: yes, 2007
As a part of current systematic investigations of strontium tellurite, SrTeO3, with particular emphasis on crystal chemistry and phase transitions, the structure of the gamma phase has been determined at 583 K using a single-crystal analysis.
Zavodnik, Valery E.   +2 more
core   +1 more source

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