Results 251 to 260 of about 226,209 (302)

Photonic crystal waveguides with acute bending angles

Applied Physics Letters, 2005
We propose and study photonic crystal waveguides with bending angles smaller than 90°. The waveguide is formed by coupled defect cavities. To achieve a reflectionless transmission through an acute angle, we surround the defects in the bends with distorted cells having a prescribed symmetry.
Natalia Malkova, C. Z. Ning
openaire   +3 more sources

Bending Strength of Angles

Electrical Transmission in a New Age, 2002
The paper presents the results of tests on six single angles under minor axis bending, thirteen double angles under geometric axis bending, and eight laterally unsupported single angle beams with long legs horizontal. All twenty-seven specimens developed full plastic moment.
Murty K. S. Madugula, Yongcong Ding
openaire   +1 more source

Angled Bend HqO-Mode Exciters

1994 24th European Microwave Conference, 1994
The new technique of the rectangular waveguide higher HqO-mode (2 ? q ? 20) excitation based on unique properties of multistage angular discontinuities was found by means of numerical simulation. Very simple constructions of the HqO- exciters for antenna and measuring equipment, for the solution of power dividing/adding problems, and microwave heating ...
Anatoly A. Kirilenko, Leonid A. Rud', Vladimir I. Tkachenko   +2 more
openaire   +1 more source

Right angle bends in light pipes: analysis

Applied Optics, 1976
An expression for the fraction of incident radiation transmitted by a right angle bend in a rectangular light pipe is derived. This expression is used to show that, in a planar light pipe structure with right angle bends, light attenuation is due only to reflection losses at the walls if the launching angle is 45 degrees .
M D, Wagh, B V, Rao
openaire   +2 more sources

Practical bending-angle calculation for an automated surgical plate bending apparatus

Journal of Mechanical Science and Technology, 2020
Surgical plates used for reconstructive surgery require a repetitive manual bending process to fit the plate to the defect during reconstruction. However, this process may not produce a plate that fits well, and repetitive bending may significantly increase the risk of plate fracture due to the accumulation of residual stress.
Si-Myung Park, Jeonghwan Lee, Seungbin Park, Jung-Woo Lee, Minsoo Park, Youngjun Kim, Gunwoo Noh   +6 more
openaire   +1 more source

Effective neutron bending at large angles

Neutron News, 1995
Abstract The use of smooth, hollow glass capillaries for neutron optics was discussed elsewhere (1,2,3). By means of such capillaries, neutron lenses were constructed, which allowed an increase of neutron flux at the focal point by a factor of 10–15.
A. Ioffe, S. Dabagov, M. Kumakhov
openaire   +1 more source

Non-Iterative Control of Small-Radius Bend Angle

Journal of Manufacturing Processes, 1999
Abstract Controlling first-part quality in small-radius press brake bending operations is motivated by the need to produce small-lot parts of high quality. A new technique for angle control has been developed based on an experimentally measured model of material properties, tooling geometry variables, and on-line measurements of part deformation ...
Kerry L. Elkins, Robert H. Sturges
openaire   +1 more source

Topological Measurement of Protein-induced DNA Bend Angles

Journal of Molecular Biology, 1996
A new method measures independently the changes in the DNA bend and winding angles that occur when a protein binds to its specific site in DNA. The procedure requires an investigation of the change in DNA topology induced when the protein binds to tandemly repeated sites of varying repeat length in circular DNA. This new method is superior to currently
L C, Lutter, H R, Halvorson, C R, Calladine   +2 more
openaire   +2 more sources

Proper Tracheostomy Tube Bending Angle and Flange-to-Angle Length

Journal of the Medical Association of Thailand, 2022
Background: In tracheostomies, the use of tubes with appropriate bending angles and flange-to-angle lengths (FtLs) is essential to avoid complications. Objective: To assessed computed tomography (CT) scans of the normal anatomy of individuals to determine the appropriate bending angles and FtLs.
openaire   +1 more source