Results 11 to 20 of about 4,007 (197)
A cubic polyhedron is a polyhedral surface whose edges are exactly all the edges of the cubic lattice. Every such polyhedron is a discrete minimal surface, and it appears that many (but not all) of them can be relaxed to smooth minimal surfaces (under an
Goodman-Strauss, Chaim, Sullivan, John M
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Imaging of buried objects from experimental backscattering time dependent measurements using a globally convergent inverse algorithm [PDF]
We consider the problem of imaging of objects buried under the ground using backscattering experimental time dependent measurements generated by a single point source or one incident plane wave.
Beilina, Larisa +3 more
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Giant Spin Seebeck Effect through an Interface Organic Semiconductor [PDF]
Interfacing an organic semiconductor C60 with a non-magnetic metallic thin film (Cu or Pt) has created a novel heterostructure that is ferromagnetic at ambient temperature, while its interface with a magnetic metal (Fe or Co) can tune the anisotropic ...
Das, R. +10 more
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Loss of strength in Ni3Al at elevated temperatures [PDF]
Stress decrease above the stress peak temperature (750 K) is studied in h123i single crystals of Ni3(Al, 3 at.% Hf ). Two thermally activated deformation mechanisms are evidenced on the basis of stress relaxation and strain rate change experiments.
Ahmadieh A +26 more
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Axisymmetric polydimethysiloxane microchannels for in vitro hemodynamic studies [PDF]
The current microdevices used for biomedical research are often manufactured using microelectromechanical systems (MEMS) technology. Although it is possible to fabricate precise and reproducible rectangular microchannels using soft lithography techniques,
Ishikawa, T. +6 more
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The transfer matrix: a geometrical perspective [PDF]
We present a comprehensive and self-contained discussion of the use of the transfer matrix to study propagation in one-dimensional lossless systems, including a variety of examples, such as superlattices, photonic crystals, and optical resonators. In all
Barriuso, A. G. +3 more
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HATSouth: a global network of fully automated identical wide-field telescopes [PDF]
HATSouth is the world's first network of automated and homogeneous telescopes that is capable of year-round 24-hour monitoring of positions over an entire hemisphere of the sky. The primary scientific goal of the network is to discover and characterize a
A. Jordán +35 more
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For the measurement of the electric dipole moment of protons and deuterons, a novel waveguide RF Wien filter has been designed and will soon be integrated at the COoler SYnchrotron at J\"ulich.
Gebel, R. +6 more
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Infrastructural Speculations: Tactics for Designing and Interrogating Lifeworlds [PDF]
This paper introduces “infrastructural speculations,” an orientation toward speculative design that considers the complex and long-lived relationships of technologies with broader systems, beyond moments of immediate invention and design.
Bennett Cynthia L. +48 more
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Focus drive mechanism for the IUE scientific instrument [PDF]
A compact, lightweight mechanism was developed for in-orbit adjustment of the position of the secondary mirror (focusing) of the International Ultraviolet Explored telescope. This device is a linear drive with small (.0004 in.) and highly repeatable step
Dennis, T. B., Jr., Devine, E. J.
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