Results 51 to 60 of about 247,962 (296)

Adaptive image ray-tracing for astrophysical simulations

, 2010
A technique is presented for producing synthetic images from numerical simulations whereby the image resolution is adapted around prominent features.
Berger, Bonito, Brüggen, Cooper, Douglas, Drake, Dubey, E. R. Parkin, Falceta-Gonçalves, Fryxell, Genetti, Kaastra, Krumholz, Kurosawa, Löhner, MacNeice, Mewe, Monaghan, Offner, Orlando, Parashar, Parkin, Peters, Pittard, Pittard, Saxton, Sutherland, Whitted, Wissink   +28 more
core   +1 more source

On the characterisation of a Bragg spectrometer with X-rays from an ECR source [PDF]

, 2004
Narrow X-ray lines from helium-like argon emitted from a dedicated ECR source have been used to determine the response function of a Bragg crystal spectrometer equipped with large area spherically bent silicon (111) or quartz (10$\bar{1}$) crystals.
A. Gruber, A. Wasser, Anagnostopoulos, Anagnostopoulos, B. Leoni, Biri, Bitter, Costa, D. Gotta, D.F. Anagnostopoulos, Douysset, Drentje, Faenov, Gotta, Grübling, H. Fuhrmann, Hölzer, J. Zmeskal, Johann, L. Stingelin, L.M. Simons, Marchuk, Nelms, P. Indelicato, Robbins, S. Biri, Sadeghi, Xie   +27 more
core   +5 more sources

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

Optimization of Lensless Imaging Using Ray Tracing

Applied Sciences
Lensless microscopy is a well-established imaging approach that replaces traditional lenses with phase modulators, enabling compact, low-cost, and computationally driven analysis of biological samples.
Samira Arabpou, Simon Thibault
doaj   +1 more source

A Ray-Tracing Model of the Vela Pulsar [PDF]

, 2001
In the relativistic plasma surrounding a pulsar, a subluminal ordinary-mode electromagnetic wave will propagate along a magnetic field line. After some distance, it can break free of the field line and escape the magnetosphere to reach an observer.
C. Hirano, C. R. Gwinn, Manchester R. N., Radhakrishnan V.   +3 more
core   +3 more sources

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Ray Tracing RF Field Prediction: An Unforgiving Validation

International Journal of Antennas and Propagation, 2015
The prediction of RF coverage in urban environments is now commonly considered a solved problem with tens of models proposed in the literature showing good performance against measurements. Among these, ray tracing is regarded as one of the most accurate
E. M. Vitucci, V. Degli-Esposti, F. Fuschini, J. S. Lu, M. Barbiroli, J. N. Wu, M. Zoli, J. J. Zhu, H. L. Bertoni   +8 more
doaj   +1 more source

Ray tracing program with options for diffraction gratings [PDF]

, 1971
Diffraction theory, developed in vectorial form and coded into ray tracing routines, permits tracing rays of any wavelength through surfaces that are plane, spherical, conical, or aspheric polynomial.
Howell, B. J.
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

GPU-Accelerated Ray Tracing for Visualizing Monte Carlo Models [PDF]

EPJ Web of Conferences
Monte Carlo codes are naturally suited to act as computational kernels for ray tracing visualization applications because of the similarities between the ray tracing algorithm and the Monte Carlo neutral particle tracking algorithm. This paper presents a
Nease Brian, Corser Joel, Burke Paul
doaj   +1 more source