Results 171 to 180 of about 443 (222)

Intermediate filaments spatially organize intracellular nanostructures to produce the bright structural blue of ribbontail stingrays across ontogeny. [PDF]

Front Cell Dev Biol
Blumer MJ, Surapaneni VA, Ciecierska-Holmes J, Redl S, Pechriggl EJ, Mollen FH, Dean MN.   +6 more
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Radiant heating using an ellipsoidal reflector

Journal of Physics E: Scientific Instruments, 1974
A heat source positioned at one focus of a suitably shaped ellipsoidal reflector has been used to heat small objects placed at the other focus. With a tungsten-halogen lamp as the source, temperatures of the order of 1100 degrees C were obtained: substituting a conventional tungsten lamp allowed for greater flexibility in control at lower temperatures.
B A Unvala, A Maries
exaly   +2 more sources

Large Amount of Off-Axis Machining Ellipsoidal Reflector

Applied Mechanics and Materials, 2014
The article introduces the off-axis ellipsoidal mirror processing and testing, and uses AutoCAD software to calculate the maximum aspheric mirrors degrees. After processing the off-axis ellipsoidal reflector inclination error of 1.55arcsec, root mean square roughness ((RMS) of 3.21nn, focal length error is less than 1mm, and the surface accuracy can ...
Jun Feng He, Chang Chun Huang
exaly   +2 more sources

A laser-induced fluorescence biosensor by using ellipsoidal reflector

Optics and Laser Technology, 2007
Abstract A new and compact fluorescence biosensor is constructed. The distinguished feature of this setup is the use of an ellipsoidal reflector as an optical collector of the fluorescence light. A traditional collecting lens with numerical aperture of 0.5 can only collect a few percent of the available signal, while the incorporation of the ...
John C Wolfe
exaly   +2 more sources

Study on a THz image scanning system with ellipsoidal reflector

2015 8th UK, Europe, China Millimeter Waves and THz Technology Workshop (UCMMT), 2015
This paper presents our study on a reflector system for mechanically scanned imager working at 220 GHz. An ellipsoidal reflector is utilized to replace a paraboloidal reflector to achieve another focus on the target plane under the consideration of better performance in the near field imaging.
Yasir Alfadhl
exaly   +2 more sources

Realistic implementation of ellipsoidal reflector antennas to produce near‐field focused patterns

Radio Science, 2011
The radiation characteristics of ellipsoidal reflector antennas in the near zone of antenna aperture are investigated using Physical Optics (PO) approximations. This antenna has potential applications in the near‐field communications because its radiation focuses in the near zone.
Paolo Nepa
exaly   +3 more sources

A sphero ? Ellipsoidal reflector

Journal of Applied Spectroscopy, 1969
exaly   +2 more sources

Ellipsoidal reflectors in biomedical diagnostic

SPIE Proceedings, 2013
In this work were considered photometric tools for biomedical diagnostics, which contain a mirror ellipsoid of revolution. Proposed schemes with ellipsoidal reflectors for diagnostics in reflected and in reflected and transmitted light. A comparative analysis of measurement standards scattering surfaces was held.
M. A. Bezuglyi, N. V. Bezuglaya
openaire   +1 more source

Power focusing characteristics of ellipsoidal reflector

IEEE Transactions on Antennas and Propagation, 1984
Power focusing characteristics of a prolate spheroidal reflector, the aperture of which is parallel to the line connecting the two focuses, are numerically studied. As a transmitting and a receiving antenna, linear wires with finite length are placed at or near the focuses of the reflector. Reflected near fields from the reflector are calculated by the
K. Hirasawa, K. Fujimoto, T. Uchikura, S. Hirafuku, H. Naito   +4 more
openaire   +1 more source

Properties of the ellipsoidal reflector of the McDonald emissiometer

Infrared Physics, 1984
Abstract The non-linear characteristic of the McDonald emissiometer INTEC Model 2145 is investigated. A reflection model yields a characteristic in very good agreement with the experimental data. The areal distribution of the sensitivity of the measuring head shows no azimuthal dependence.
K. Gindele, M. Köhl, M. Mast
openaire   +1 more source