Results 81 to 90 of about 453,863 (195)
Scattering model of scintillation arcs in pulsar secondary spectra
Monthly Notices of the Royal Astronomical SocietyABSTRACT The dynamic spectra of pulsars frequently exhibit diverse interference patterns, often associated with parabolic arcs in the Fourier-transformed (secondary) spectra. Our approach differs from previous ones in two ways: first, we extend beyond the traditional Fresnel–Kirchhoff method by using the Green’s function of the Helmholtz
Tobias Kramer +3 more
openaire +2 more sources
Virtual and Physical PrototypingTo address the surface oxidation and porosity defects in the wire-arc directed energy deposition of aluminum alloys, a laser-arc composite cleaning method is proposed for the irregular surface morphology of the deposited layer during the deposition ...
Hao Liu +9 more
doaj +1 more source
Study on the Ablation of Slide Plate by Pantograph–Catenary Arc Based on Pantograph Slide Material
InfrastructuresThe ablation of pantograph sliders caused by pantograph–catenary arcing is a critical issue in the operation of pantograph–catenary systems. The arc discharge induces localized high temperatures that lead to the melting and even evaporation of the slider
Rui Tian, Shao-Jie Wang, Mai Lu, Jie Li
doaj +1 more source
Research of Harm Analysis of Capacitance Current of Renlou Coal Mine and Its Treatment
Gong-kuang zidonghua, 2011 In order to solve the problem that single-phase grounding capacitance current of isolated neutral system could cause secondary disaster and equipment damage in distribution network and generate single-phase arc grounding over-voltage and ferromagnetic ...
DUAN Lian
doaj +2 more sources
Preliminary design analysis for the solar optical telescope main mirror actuator [PDF]
The resolution of the SOT Gregorian telescope was maintained if the conic foci of the elliptical secondary and parabolic primary were made to coincide within plus or minus 38 microns across the prime focus plane and to within 5 microns in focus. An error
Dunn, R. B.
core +1 more source
Modeling of secondary arc on high‐voltage solar array in space
Electrical Engineering in Japan, 2006 AbstractSecondary arc on solar arrays in space in defined as an arc discharge short‐circuiting adjacent solar cells. As the operational voltage of spacecraft increases to 100 V, there is more risk of secondary arc that can destroy solar array circuits.
openaire +2 more sources
Teshugang, 2005 Besides capacity of electric arc furnace, the production conditions such as chaining, melting steel grade, steelmaking process and production flow sheet influence the determination of rating capacity of transformer for electric arc furnace, It has been ...
阎立懿 +4 more
doaj
Visceral leishmaniasis risk clusters on Brazil's borders: 2013 to 2022. [PDF]
Rev Soc Bras Med TropMoreira WDC +6 more
europepmc +1 more source
Secondary arc description on satellite solar generators
Secondary arc description on satellite solar generatorsIn this paper, we propose a quasi-neutral model with non-vanishing current describing the expansion of a plasma in an inter-cellular gap on a satellite solar array. Moreover, an electric arc cathode spot model is proposed in order to give suitable boundary conditions for the expansion model.
openaire
A retroelement-derived mammalian ARC protein exhibits selective RNA recognition and nucleic acid chaperone functions. [PDF]
Nucleic Acids ResGumna-Mikina J +5 more
europepmc +1 more source