Results 71 to 80 of about 2,199,437 (323)

Discovery of hard X-ray features around hotspots of Cygnus A

, 2004
We present results of analysis of a Chandra observation of Cygnus A in which the X-ray hotspots at the ends of the jets are mapped in detail. A hardness map reveals previously unknown structure in the form of outer and inner hard arcs around the hotspots,
L. Stawarz, M. Balucinska-Church, M. J. Church, M. Ostrowski, Prieto   +4 more
core   +1 more source

Design and Prototyping of Topology‐Optimized, Additively Manufactured Lightweight Components for Space Robotic Systems: A Case Study

Advanced Engineering Materials, EarlyView.
The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos, Grigorios Kostopoulos, Eleni Papadopoulou, Stefanos Voulgaris, Alexandra Tseni, Panteleimon Bakalis, Maria N. Gkara, Chara Ch. Mitropoulou, Georgios Kazakis, Alin Munteanu, Jeremi Gancet, Nikos D. Lagaros   +11 more
wiley   +1 more source

Recent progress in diamond radiation detectors

Functional Diamond, 2022
This paper reviews recent progress in diamond radiation detectors. Diamond is an ultra-wide gap (5.5 eV) semiconducting material which has several ideal properties for radiation detectors, such as solar blindness, high temperature operation, and fast ...
T. Shimaoka, S. Koizumi, J. H., Kaneko
doaj   +1 more source

Radiation hardness qualification of PbWO_4 scintillation crystals for the CMS Electromagnetic Calorimeter [PDF]

, 2010
Ensuring the radiation hardness of PbWO_4 crystals was one of the main priorities during the construction of the electromagnetic calorimeter of the CMS experiment at CERN.
Bornheim, A., Gataullin, M., Litvine, V., Ma, Y., Newman, H. B., Orimoto, T., Rogan, C., Timciuk, V., Veverka, J., Yang, Y., Zhang, L. Y., Zhu, K., Zhu, R. Y.   +12 more
core  

The Aromatic Features in Very Faint Dwarf Galaxies

, 2009
We present optical and mid-infrared photometry of a statistically complete sample of 29 very faint dwarf galaxies (M_r > -15 mag) selected from the SDSS spectroscopic sample and observed in the mid-infrared with Spitzer IRAC. This sample contains nearby (
Abazajian, Adelmen-McCarthy, Allenmandola, Assef, Blanton, Blanton, Boselli, Calzetti, Calzetti, Dale, David W. Hogg, Draine, Draine, Engelbracht, Engelbracht, Gordon, Helou, Hogg, Houck, Izotov, Jackson, John Moustakas, Kewley, Kewley, Lacy, Leger, Leitherer, Li, Lonsdale, Lupton, Mas-Hesse, Massey, O'Halloran, Pahre, Peeters, Pilyugin, Plante, Rieke, Roche, Ronin Wu, Rosenberg, Schlegel, Smith, Struskie, Thuan, Tielens, Tremonti, Uchida, Werner, Willick, Wu, Wu, Wu, York   +53 more
core   +1 more source

Radiation from hard objects [PDF]

, 1997
The inference of the diameter of hard objects is insensitive to radiation efficiency. Deductions of radiation efficiency from observations are very sensitive - possibly overly so. Inferences of the initial velocity and trajectory vary similarly, and hence are comparably sensitive.
openaire   +2 more sources

Nitride‐Reinforced Metal Matrix Nanocomposite Powders Production by Plasma‐Assisted Thermochemical Treatment of Intermetallic Powders

Advanced Engineering Materials, EarlyView.
This study proposes a new methodology for producing metal matrix nanocomposites in the solid state. The process involves the plasma‐assisted thermochemical treatment of metallic alloy powders. As a proof‐of‐concept, TiN nanoparticles are synthesized directly on the surface of FeTi intermetallic powder particles, enabling the development of the ...
Deivison Daros Paim, Antônio Rogério de Souza, Tatiana Bendo, Aloisio Nelmo Klein, Rodrigo Perito Cardoso   +4 more
wiley   +1 more source

Effects of ion beams on flash memory cells [PDF]

Nuclear Technology and Radiation Protection, 2014
This paper deals with the flash memory reliability in terms of the ionizing radiation effects. In fact, the reliability of flash memory depends on physico-chemical restrictions of electrostatic nature due to the effects of ionizing radiation ...
Obrenović Marija D., Lazarević Đorđe R., Dolićanin Edin Ć., Vujisić Miloš Lj.   +3 more
doaj   +1 more source

Polycyclic Aromatic Hydrocarbon and Emission Line Ratios in Active Galactic Nuclei and Starburst Galaxies [PDF]

, 2010
We study the Polycyclic Aromatic Hydrocarbons (PAH) bands, ionic emission lines, and Mid-infrared continuum properties, in a sample of 171 emission line galaxies taken from literature plus 15 new active galactic nuclei (AGN) Spitzer spectra.
Allamandola, Baum, Bauschlicher, Bernard-Salas, Brandl, Buchanan, Burtscher, Deo, Dinalva A. Sales, Draine, Draine, Galliano, Galliano, Gallimore, Genzel, Gordon, Houck, Hunt, Kaneda, M. G. Pastoriza, Mathis, O'Dowd, Osterbrock Donald, Pogge, R. Riffel, Roche, Smith, Storchi-Bergmann, Sturm, Thornley, Voit, Weedman, Wu   +32 more
core   +2 more sources

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source