Results 31 to 40 of about 8,037,396 (263)

Milling Force Model for Aviation Aluminum Alloy: Academic Insight and Perspective Analysis

, 2021
Aluminum alloy is the main structural material of aircraft, launch vehicle, spaceship, and space station and is processed by milling. However, tool wear and vibration are the bottlenecks in the milling process of aviation aluminum alloy.
Zhen-Ya Duan, Changhe Li, W. Ding, Yanbin Zhang, Min Yang, Teng Gao, Huajun Cao, X. Xu, Dazhong Wang, Cong Mao, H. Li, G. Kumar, Zafar Said, S. Debnath, M. Jamil, H. Ali   +15 more
semanticscholar   +1 more source

Expanding Space: the Root of all Evil? [PDF]

, 2007
While it remains the staple of virtually all cosmological teaching, the concept of expanding space in explaining the increasing separation of galaxies has recently come under fire as a dangerous idea whose application leads to the development of ...
Chodorowski, Dicke, Geraint F. Lewis, Grøn, Hobson, J. Berian James, Luke A. Barnes, Matthew J. Francis, Rees, Weinberg, Whiting   +10 more
core   +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., Horsley, S. A. R., La Rocca, G. C.   +2 more
core   +3 more sources

Comparative evaluation of biting force and chewing efficiency of all-on-four treatment concept with other treatment modalities in completely edentulous individuals

The Journal of Indian Prosthodontic Society, 2020
Aim: To compare and evaluate biting force and chewing efficiency of all-on-four treatment concept, implant-supported overdenture, and conventional complete denture. Settings and Design: Invivo – comparative study.
Romesh Soni, Himanshi Yadav, Abhishek Pathak, Atul Bhatnagar, Vikram Kumar   +4 more
doaj   +1 more source

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., Kamada H., Golak J., Glöckle W., Epelbaum E., Nogga A., Rozpędzik D., Witała H.   +7 more
doaj   +1 more source

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, Shijun Ji, Ji Zhao, Rengquan Sun, Handa Dai   +4 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, C. Teitelboim, C. Teitelboim, C. Teitelboim, D. A. Macdonald, D. A. Macdonald, D. G. Boulware, F. Strocchi, Francis J. Alexander, I. S. Gradshteyn, J. A. Wheeler, J. D. Bekenstein, J. D. Jackson, R. L. Znajek, R. P. Feynman, R. S. Hanni, S. A. Fulling, S. Schweber, T. Damour, T. Damour, U. H. Gerlach, U. H. Gerlach, U. H. Gerlach, U. H. Gerlach, U. H. Gerlach, U. H. Gerlach, Ulrich H. Gerlach, W. H. Press, W. N. Bailey   +28 more
core   +2 more sources

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, Naohiro Mae, Michael M. Hull, Masa-aki Taniguchi   +3 more
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, Ball, Bell, Chernyakova, de Jager, Emmering, Harding, Hester, Hirayama, Ho, J.G. Kirk, Johnston, Johnston, Johnston, Johnston, Jones, Kaspi, Kaspi, Kennel, Kirk, Lewis Ball, Luo, Mastichiadis, Melatos, Qiao, Rees, Tavani, Tavani, Yoshikoshi, Zhang   +29 more
core   +3 more sources

A New Algorithm for 2-D Transport for Astrophysical Simulations: I. General Formulation and Tests for the 1-D Spherical Case [PDF]

, 2006
We derive new equations using the mixed-frame approach for one- and two-dimensional (axisymmetric) time-dependent radiation transport and the associated couplings with matter.
Burrows, Adam, Hubeny, Ivan
core   +2 more sources