Results 121 to 130 of about 4,484,191 (405)

Extremely narrow spectrum of GRB110920A: further evidence for localised, subphotospheric dissipation

open access: yes, 2015
Much evidence points towards that the photosphere in the relativistic outflow in GRBs plays an important role in shaping the observed MeV spectrum. However, it is unclear whether the spectrum is fully produced by the photosphere or whether a substantial ...
Ahlgren, B.   +8 more
core   +1 more source

Coercivity Improvement in Ce‐Containing (Nd,Pr)‐Fe‐B‐Based Sintered Magnets by Application of the 2‐Powder Method

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the magnetic properties and microstructures of 2PM‐manufactured Ce‐containing (Nd,Pr)‐Fe‐B magnets. The addition of Nd and Dy significantly enhances coercivity by 25% and 81%, respectively, attributed to core‐shell structures.
Chi‐Chia Lin   +6 more
wiley   +1 more source

The spectrum of the Broad Line Region and the high-energy emission of powerful blazars [PDF]

open access: yes, 2008
High-energy emission (from the X-ray through the gamma-ray band) of Flat Spectrum Radio Quasars is widely associated with the inverse Compton (IC) scattering of ambient photons, produced either by the accretion disk or by the Broad Line Region, by high-energy electrons in a relativistic jet.
arxiv   +1 more source

Recent Progress on 2D‐Material‐Based Smart Textiles: Materials, Methods, and Multifunctionality

open access: yesAdvanced Engineering Materials, EarlyView.
Advancements in 2D‐material‐integrated smart textiles are reviewed, with a focus on materials, fabrication methods, and multifunctional applications, including energy harvesting, monitoring, EMI shielding, energy storage, and thermal management. The discussion addresses key challenges and provides insights into the future development of next‐generation
Yong Choi   +5 more
wiley   +1 more source

Tailoring emission spectra by using microcavities

open access: yesResults in Physics, 2019
We present a theoretical model to describe emission spectrum of an emitter in a micro-cavity. Our model proposes that the spectrum in a metal micro-cavity depends on the product of the emission spectrum in free space and the local density of states (LDOS)
Muhammad Hanif Ahmed Khan Khushik   +1 more
doaj  

Measurement of Argon emission spectral of ICP plasma using a diagnostic system based on photomultiplier tubes array

open access: yesMATEC Web of Conferences, 2017
Optical emission spectroscopy (OES) is one of the most important diagnostic tools in plasma physics. A self-built spectroscopic diagnostic system, owning temporal and spatial resolution, has been constructed using photo multiplier tubes (PMTs) array ...
Liu Weifeng   +4 more
doaj   +1 more source

Bioluminescence emission of the firefly [PDF]

open access: yes, 2007
We have recorded _in vivo_ emission and time-resolved spectra of the firefly species _Pyrophorus noctilucus_. The emission spectrum shows the FWHM value for this particular species to be 55 nm, which is significantly smaller than the half widths reported
Anurup Gohain Barua   +3 more
core   +1 more source

Measurement of fluorescence emission spectrum of few strongly driven atoms using an optical nanofiber.

open access: yesOptics Express, 2010
We show that the fluorescence emission spectrum of few atoms can be measured by using an optical nanofiber combined with the optical heterodyne and photon correlation spectroscopy.
M. Das   +5 more
semanticscholar   +1 more source

Reactive Interaction and Wetting of Fe‐ and Mn‐Containing, Secondary AlSi Alloys with Manganese Oxide Ceramic Filter Material for Fe Removal

open access: yesAdvanced Engineering Materials, EarlyView.
Fe‐ and Mn‐containing AlSi alloys undergo aluminothermic reaction with Mn oxide in sessile‐drop and crucible experiments forming poor‐wetting Al2O3 while Mn enriches in the alloy. Primary Fe‐containing particles are preferentially attached to the Mn oxide.
Hanka Becker   +6 more
wiley   +1 more source

Research of identification of acoustic emission signal of coal and rock

open access: yesGong-kuang zidonghua, 2013
In view of problem that it is difficult to identify acoustic emission signal of coal and rock burst under complicated noise environment, the paper proposed an identification method of acoustic emission signal of coal and rock based on wavelet packet and ...
TONG Min-ming   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy