Results 21 to 30 of about 782,566 (296)
STUDY ON FATIGUE SCATTER FACTOR OF AIRCRAFT STRUCTURE UNDER DURABILITY SEVERE LOAD SPECTRUM
Jixie qiangdu, 2021 Fatigue scatter factor is the reliability index of aircraft structure life,which is used to describe the reliability of analysis and test results.
WANG YongJun, LI Tang, DUI HongNa
doaj
Characterization of Scattered X-Ray Photons in Dental Cone-Beam Computed Tomography. [PDF]
PLoS ONE, 2016 Scatter is a very important artifact causing factor in dental cone-beam CT (CBCT), which has a major influence on the detectability of details within images.
Ching-Ching Yang
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Study on fatigue life dispersion of aluminum alloy structures with different damage sizes
Hangkong gongcheng jinzhan, 2023 Fatigue life scatter factor of damaged aircraft structures is an important parameter to analyze their fatigue life dispersion degree. The fatigue test of prefabricated damage test pieces is carried out for aluminum alloy materials commonly used in ...
LI Xiaotao, CUI Ronghong, LI Zhe
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Spiral galaxy distance indicators based on near-infrared photometry [PDF]
, 1999 We compare two methods of distance determination to spiral galaxies using optical/near-infrared (NIR) observations, the (I-K) versus M_K colour - absolute magnitude (CM) relation and the I and K-band Tully-Fisher relation (TFR). Dust-free colours and NIR
de Grijs, R., Peletier, R. F.
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Tuning Gravitationally Lensed Standard Sirens [PDF]
, 2006 Gravitational waves emitted by chirping supermassive black hole binaries could in principle be used to obtain very accurate distance determinations.
Goobar, Ariel +2 more
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Discussions on some problems of full-scale aircraft fatigue test
Hangkong gongcheng jinzhanFull-scale aircraft fatigue test is a large, complex and long-lasting ground verification test required by the specification to sustain aircraft structural integrity program and meet airworthiness requirements.
ZHANG Lixin
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EPJ Web of Conferences, 2016 In theory, lidar overlap factor can be derived from the difference between the particle backscatter coefficient retrieved from lidar elastic signal without overlap correction and the actual particle backscatter coefficient, which can be obtained by other
Wang Zhenzhu +4 more
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A Universal Neutral Gas Profile for Nearby Disk Galaxies
, 2012 Based on sensitive CO measurements from HERACLES and HI data from THINGS, we show that the azimuthally averaged radial distribution of the neutral gas surface density (Sigma_HI + Sigma_H2) in 33 nearby spiral galaxies exhibits a well-constrained ...
Bigiel +19 more
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Photon acceleration in variable ultra-relativistic outflows and high-energy spectra of Gamma-Ray Bursts [PDF]
, 2000 MeV seed photons produced in shocks in a variable ultra-relativistic outflow gain energy by the Fermi mechanism, because the photons Compton scatter off relativistically colliding shells. The Fermi-modified high-energy photon spectrum has a non-universal
Andrei Gruzinov +4 more
core +3 more sources
Molecular Imaging, 2002 Inappropriate expression of the c-met-protooncogene product (Met) and/or of its ligand, hepatocyte growth factor/scatter factor (HGF/SF), has been correlated with poor prognosis in a variety of human solid tumors.
Rick V. Hay +7 more
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