Results 31 to 40 of about 706,046 (321)
Deformation Analysis of the Multiplanar Conformal Off-Axis Four-Mirror in an Aerospace Environment
International Journal of Aerospace Engineering, 2021 The effect of maneuver overload on a new type of the multiplanar conformal off-axis four-mirror is studied under the noninertial environment of aerospace.
Haodong Huo +4 more
doaj +1 more source
Radiation 'damping' in atomic photonic crystals [PDF]
, 2010 The force exerted on a material by an incident beam of light is dependent upon the material's velocity in the laboratory frame of reference. This velocity dependence is known to be diffcult to measure, as it is proportional to the incident optical power ...
Artoni, M. +2 more
core +3 more sources
Four-nucleon force contribution to the binding energy of 4He
EPJ Web of Conferences, 2010 We study the four-nucleon force contribution to the binding energy of 4He in the framework of chiral nuclear interactions. The four-nucleon forces start to contribute in the next-to-next-to-next-to leading order.
Skibiński R. +7 more
doaj +1 more source
Analyzing false positives of four questions in the Force Concept Inventory
Physical Review Physics Education Research, 2018 In this study, we analyze the systematic error from false positives of the Force Concept Inventory (FCI). We compare the systematic errors of question 6 (Q.6), Q.7, and Q.16, for which clearly erroneous reasoning has been found, with Q.5, for which ...
Jun-ichiro Yasuda +3 more
doaj +1 more source
Extension of the QuickFF force field protocol for an improved accuracy of structural, vibrational, mechanical and thermal properties of metal-organic frameworks [PDF]
, 2018 QuickFF was originally launched in 2015 to derive accurate force fields for isolated and complex molecular systems in a quick and easy way. Apart from the general applicability, the functionality was especially tested for metal-organic frameworks (MOFs),
Van Speybroeck, Veronique +5 more
core +2 more sources
Full and half-wavelength ultrasonic percussive drills [PDF]
, 2018 Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick +2 more
core +1 more source
Experimental assessment for non-monolithic slab-column connections
Ain Shams Engineering Journal, 2021 It is common practice to use non-monolithic connections to connect the new flat slabs to the existing columns for upgrading the stories number of the existing buildings, despite the lack of design guidelines for the non-monolithic connection.
Ahmed Abdel-hady +3 more
doaj +1 more source
Coulomb field of an accelerated charge: physical and mathematical aspects [PDF]
, 1991 The Maxwell field equations relative to a uniformly accelerated frame, and the variational principle from which they are obtained, are formulated in terms of the technique of geometrical gauge invariant potentials.
C Teitelboim +28 more
core +2 more sources
Chinese Journal of Mechanical Engineering, 2019 The labyrinth seal in turbomachinery is a key element that restricts leakage flow among rotor-stator clearances from high-pressure regions to low-pressure regions.
Qingfeng Wang, Lidong He
doaj +1 more source
Probing Pulsar Winds Using Inverse Compton Scattering [PDF]
, 1999 We investigate the effects of inverse Compton scattering by electrons and positrons in the unshocked winds of rotationally-powered binary pulsars. This process can scatter low energy target photons to produce gamma rays with energies from MeV to TeV. The
Aschenbach +29 more
core +3 more sources