Results 51 to 60 of about 453,863 (195)

Effects of interface-edge angle on the bonding strength of a ceramics/metal joint with arc-free surface of interface edges

open access: yesMechanical Engineering Journal, 2019
The focus of this study is to clarify the effects of an interface-edge shape on the bonding strength of a ceramics/metal joint. Each silicon nitride-to-nickel joint plate with an arc-shaped free-surface edge was prepared using wire-electric discharge ...
Reiichi TOKUMOTO   +3 more
doaj   +1 more source

Trends in Ti44 and Ni56 from Core-Collapse Supernovae

open access: yes, 2010
We compare the yields of Ti44 and Ni56 produced from post-processing the thermodynamic trajectories from three different core-collapse models -- a Cassiopeia A progenitor, a double shock hypernova progenitor, and a rotating 2D explosion -- with the ...
Fryer, Christopher L.   +5 more
core   +1 more source

Sustained arc ignition system [PDF]

open access: yes, 1977
Circuitry for maintaining an arc or spark across a spark gap for a desired length of time is disclosed. A high voltage, direct current source is connected in series with a secondary winding of a high voltage, stepup transformer or coil and a spark gap ...
Birchenough, A. G.
core   +1 more source

Method and apparatus for nondestructive testing [PDF]

open access: yes, 1974
High voltage is applied to an arc gap adjacent to a test specimen to develop a succession of high frequency arc discharges. Those high frequency arc discharges generate pulses of ultrasonic energy within the test specimen without requiring the arc ...
Hoop, J. M.
core   +1 more source

Invariant Peano curves of expanding Thurston maps

open access: yes, 2013
We consider Thurston maps, i.e., branched covering maps $f\colon S^2\to S^2$ that are postcritically finite. In addition, we assume that $f$ is expanding in a suitable sense.
A Douady   +22 more
core   +1 more source

Radiation Therapy Medical Physics Review – Delivery, Interactions, Safety, Feasibility, and Head to Head Comparisons of the Leading Radiation Therapy Techniques [PDF]

open access: yes, 2017
Radiation therapy uses high energy radiation to kill cancer cells. Radiation therapy for cancer treatment can take the form of photon therapy (using x-rays and gamma rays), or charged particle therapy including proton therapy and electron therapy. Within
Collins, Cielle
core   +1 more source

Gravitational Lensing in Clusters of Galaxies: New Clues Regarding the Dynamics of Intracluster Gas

open access: yes, 1994
Long arcs in clusters of galaxies, produced by gravitational lensing, can be used to estimate the mass interior to the arcs and therefore, constrain the cluster mass distribution.
Babul, Arif, Miralda-Escude, Jordi
core   +1 more source

The Research of Secondary Arc Spectrum Characteristics on UHV

open access: yesTELKOMNIKA Indonesian Journal of Electrical Engineering, 2012
On UHV power transmission lines, when single-phase ground fault happen, it will appear secondary arc on lines, the existence of secondary arc impact on the stable operation of system. The effectiveness of single-pole autoreclosure (SPAR) in maintaining power system stability is largely determined by the speed with which secondary arc extinction, and ...
Baina He, Yunwei Zhao
openaire   +1 more source

Research on the phased development characteristics of pantograph catenary arc under low air pressure and strong airflow

open access: yes机车电传动, 2023
Pantograph catenary arc is an important factor threatening the current-receiving quality of high-speed trains. The motion characteristics and development law of pantograph arc under low air pressure are significantly different from those under ...
XU Yue   +4 more
doaj  

Solar energy collection system [PDF]

open access: yes, 1979
A fixed, linear, ground-based primary reflector having an extended curved sawtooth-contoured surface covered with a metalized polymeric reflecting material, reflects solar energy to a movably supported collector that is kept at the concentrated line ...
Miller, C. G., Stephens, J. B.
core   +1 more source

Home - About - Disclaimer - Privacy