Results 11 to 20 of about 2,421,794 (345)
To beam or not to beam: that is the question [PDF]
Dentomaxillofacial Radiology, 2013 After reading the articles by Lione et al,1,2 I was very upset and concerned about the way the authors intentionally misused ionizing radiation to assess the effectiveness of an orthodontic treatment. Both studies were published at a similar time and cover the same unfortunate 17 pre-pubertal children, who had a mean age of only 11.2 years (range 8–14 ...
Lione,R +4 more
openaire +5 more sources
Frictional interactions for non‐localized beam‐to‐beam and beam‐inside‐beam contact [PDF]
International Journal for Numerical Methods in Engineering, 2021 AbstractThis contribution presents the extensions of beam‐to‐beam and beam‐inside‐beam contact schemes of the same authors towards frictional interactions. Since the schemes are based on the beams' true surfaces (instead of surfaces implicitly deduced from the beams' centroid lines), the presented enhancements are not only able to account for ...
Magliulo, Marco +3 more
openaire +2 more sources
Coherent beam-beam tune shift of unsymmetrical beam-beam interactions with large beam-beam parameter [PDF]
Physical Review E, 2005 Coherent beam-beam tune shift of unsymmetrical beam-beam interactions was studied experimentally and numerically in HERA where the lepton beam has a very large beam-beam parameter (up to $ξ_y=0.272$). Unlike the symmetrical case of beam-beam interactions, the ratio of the coherent and incoherent beam-beam tune shift in this unsymmetrical case of beam ...
Jin, Lihui +2 more
openaire +3 more sources
The coherent beam-beam interaction [PDF]
Conference Record of the 1991 IEEE Particle Accelerator Conference, 2002 The authors present the results of a new beam-beam simulation program that allows for a self-consistent calculation of the electromagnetic fields of the beams by treating general (non-Gaussian) beam distributions. The simulation program calculates the fields from the coordinates of the test-particles, and does not impose any restrictions on the beam ...
Krishnagopal, S., Siemann, R.H.
openaire +2 more sources
Generation of extreme-ultraviolet beams with time-varying orbital angular momentum [PDF]
Science, 2019 Pulses with a twist and torque Structured light beams can serve as vortex beams carrying optical angular momentum and have been used to enhance optical communications and imaging. Rego et al.
L. Rego +13 more
semanticscholar +1 more source
Induced shear in reinforced concrete beams with synthetic aggregate
Revista IBRACON de Estruturas e Materiais, 2023 The increasing aluminum production demands larger volumes of bauxite residue (BR) to be stored in the Amazon region. There are millions of tons of waste without reuse but with high potential for use in civil construction as artifacts or components for ...
Willian Jorge Rodrigues Amaral +1 more
doaj +1 more source
Optimization of Concrete Beams Reinforced with GFRP Bars [PDF]
Journal of Soft Computing in Civil Engineering, 2022 Members with GFRP bars exhibit different behavior from those with steel bars due to the brittle and low elastic modulus of the GFRP bars. However, there are limited studies considering the optimum design of reinforced concrete members with GFRP bars ...
Thaer Alrudaini
doaj +1 more source
Low-dimensional non-metal catalysts: principles for regulating p-orbital-dominated reactivity
npj Computational Materials, 2021 Activation of p-block elements to replace the rare and precious transition metals for renewable energy applications is highly desirable. In this review, we go over recent experimental and theoretical progress on the low-dimensional non-metal materials ...
Si Zhou +5 more
doaj +1 more source
Exponential beams of electromagnetic radiation [PDF]
, 2006 We show that in addition to well known Bessel, Hermite-Gauss, and Laguerre-Gauss beams of electromagnetic radiation, one may also construct exponential beams.
Allen L +13 more
core +2 more sources
Investigation of the flat beam model of the beam-beam interaction [PDF]
Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440), 2003 At the interaction point of a storage ring collider each beam is subject to perturbations due to the electromagnetic field of the counterrotating beam. For flat beams, a well-known approximation models the beam by a current sheet which is uniform in the horizontal plane, restricting the particle motion to the vertical direction. In this classical model
Bjoern S. Schmekel +2 more
openaire +3 more sources