Results 71 to 80 of about 2,077,932 (214)
Current Directions in Biomedical EngineeringA novel tool to create artificial, cell-based model systems of biological barriers for preclinical drug testing and basic research are artificial collagen membranes (ACM).
Behrens Stephan +7 more
doaj +1 more source
Dynamical beam manipulation based on 2-bit digitally-controlled coding metasurface
Scientific Reports, 2017 Recently, a concept of digital metamaterials has been proposed to manipulate field distribution through proper spatial mixtures of digital metamaterial bits.
Cheng Huang +5 more
semanticscholar +1 more source
Beam-Beam Interactions for Bunched and Unbunched Beams [PDF]
, 1980 The beam-beam interaction is analyzed in terms of Chirikov’s stochasticity model. Stochastic blow-up occurs when the density of resonance regions in phase space becomes large, and Arnold diffusion is assumed to depend on the density parameter below the stochastic threshold.
openaire +1 more source
An Experimental Approach to Vibro-Acoustic Study of Beam-Type Structures
Archives of Acoustics, 2018 In this paper an alternative procedure to vibro-acoustics study of beam-type structures is presented. With this procedure, it is possible to determine the resonant modes, the bending wave propagation velocity through the study of the radiated acoustic ...
Jeniffer TORRES-ROMERO +4 more
doaj +1 more source
High-resolution aliasing-free optical beam steering
, 2016 Many applications, including laser (LIDAR) mapping, free-space optical communications, and spatially resolved optical sensors, demand compact, robust solutions to steering an optical beam.
D. Hutchison +8 more
semanticscholar +1 more source
, 1983 The subject of beam-beam instability has been studied since the invention of the colliding beam storage rings. Today, with several colliding beam storage rings in operation, it is not yet fully understood and remains an outstanding problem for the storage ring designers.
openaire +2 more sources
Estimating the Torsional Capacity of Reinforced Concrete Beams Using ANFIS Models [PDF]
Advances in Engineering and Intelligence SystemsDesigning or appraising framed concrete buildings exposed to high eccentric loads requires precise reinforced concrete (𝑅𝐶) torsional strength estimates. Unfortunately, semi-empirical formulae still fail to adequately predict the torsional capacity of 𝑅𝐶
Zhao Wenwu +4 more
doaj +1 more source
Demonstration of a beam loaded nanocoulomb-class laser wakefield accelerator
Nature Communications, 2017 Laser-plasma wakefield accelerators have seen tremendous progress, now capable of producing quasi-monoenergetic electron beams in the GeV energy range with few-femtoseconds bunch duration.
J. Couperus +22 more
semanticscholar +1 more source
Revisit of combined parallel‐beam/cone‐beam or fan‐beam/cone‐beam imaging [PDF]
Medical Physics, 2013 Purpose:This aim of this paper is to revisit the parallel‐beam/cone‐beam or fan‐beam/cone‐beam imaging configuration, and to investigate whether this configuration has any advantages.Methods:Twenty years ago, it was suggested to simultaneously use a parallel‐beam (or a fan‐beam) collimator and a cone‐beam collimator to acquire single photon emission ...
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, 2017 When a reinforced concrete (RC) frame subjected to an edge-column-removal scenario, its floor system exhibits a complicated mechanism against progressive collapse due to the interaction between beams and slabs and the two-way load transfer ...
Xinzheng Lu +5 more
semanticscholar +1 more source