Results 51 to 60 of about 6,347 (227)

Delayed X- and Gamma-Ray Line Emission from Solar Flare Radioactivity [PDF]

open access: yes, 2006
We have studied the radioactive line emission expected from solar active regions after large flares, following the production of long-lived radioisotopes by nuclear interactions of flare-accelerated ions. This delayed X- and gamma-ray line emission can provide unique information on the accelerated particle composition and energy spectrum, as well as on
arxiv   +1 more source

Radioisotopic labeling reveals inaccuracy of phosphorus use efficiency of ammonium phosphate fertilizers calculated by the difference method

open access: yesAgricultural &Environmental Letters, Volume 10, Issue 1, June 2025.
Abstract Management of phosphorus (P) inputs to agroecosystems is often evaluated by phosphorus use efficiency (PUE), but different calculation approaches may yield discrepancies in estimated PUE values. We evaluated PUE (i) indirectly calculated by difference in crop P uptake between a P‐fertilized versus a P‐unfertilized control (PUEdiff) and (ii ...
Andrew J. Margenot   +2 more
wiley   +1 more source

Recovery of radioisotopes from nuclear waste for radio-scintillator-luminescence energy applications [PDF]

open access: yesarXiv, 2012
Extraction of the light weight radioisotopes (LWR) 89Sr/90Sr, from the expended nuclear bars in the Fukushima reactor, should have decreased the extent of contamination during the course of the accident. 89Sr applications could pay for the extraction of 89Sr/90Sr from nuclear residues.
arxiv  

Discovery of the William's Ridge and Rig Seismic Seamount Microcontinents, Kerguelen Plateau: Signatures of a Fragmented Rifted Margin

open access: yesTectonics, Volume 44, Issue 6, June 2025.
Abstract The Kerguelen large igneous province (LIP), situated dominantly in the southern Indian Ocean, has several exceptional characteristics. These include an episodic and protracted formation over a ∼130 Myr period, sustaining the longest, continuous high‐magma‐flux emplacement interval of any LIP (>38 Myr), and the preservation of multiple ...
Jeremy L. Asimus   +7 more
wiley   +1 more source

Trace Analysis of Marine Organisms: A Comparison of Activation Analysis and Conventional Methods [PDF]

open access: yes, 1959
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/109766/1/lno1959440398 ...
Fukai, Rinnosuke, Meinke, W. W.
core   +1 more source

Re‐assessment of the risks to public health related to the genotoxicity of styrene present in plastic food contact materials

open access: yesEFSA Journal, Volume 23, Issue 6, June 2025.
Abstract The EFSA Panel on Food Contact Materials (FCM) was requested by the European Commission to re‐evaluate the potential genotoxicity of styrene after oral exposure and its safety for use in plastic FCM with a specific migration limit (SML) of 40 μg/kg food.
EFSA Panel on Food Contact Materials (FCM)   +18 more
wiley   +1 more source

SOME RESULTS OF THE THIRD COMPLEX MULTIDISCIPLINARY EXPEDITION OF THE RUSSIAN GEOGRAPHICAL SOCIETY FOR MONITORING OF THE RADIATION SITUATION IN THE KURIL-KAMCHATKA AREA OF THE PACIFIC OCEAN, 2014

open access: yesРадиационная гигиена, 2015
The Third complex multidisciplinary expedition of the Russian Geographic Society for monitoring of the radiation situation in the Kuril-Kamchatka area of the Pacific Oceantook place in September – October 2014.
A. M. Biblin   +3 more
doaj  

Future Supply of Medical Radioisotopes for the UK Report 2014 [PDF]

open access: yesarXiv, 2015
The UK has no research nuclear reactors and relies on the importation of 99Mo and other medical radioisotopes (e.g. Iodine-131) from overseas (excluding PET radioisotopes). The UK is therefore vulnerable not only to global shortages, but to problems with shipping and importation of the products.
arxiv  

Event-based Signal Processing for Radioisotope Identification [PDF]

open access: yesarXiv, 2020
This paper identifies the problem of unnecessary high power overhead of the conventional frame-based radioisotope identification process and proposes an event-based signal processing process to address the problem established. It also presents the design flow of the neuromorphic processor.
arxiv  

Effects of cardiac motion on dose distribution during stereotactic arrhythmia radioablation treatment: A simulation and phantom study

open access: yesJournal of Applied Clinical Medical Physics, Volume 26, Issue 5, May 2025.
Abstract Purpose Cardiac motion may degrade dose distribution during stereotactic arrhythmia radioablation using the CyberKnife system, a robotic radiosurgery system. This study evaluated the dose distribution changes using a self‐made cardiac dynamic platform that mimics cardiac motion. Methods The cardiac dynamic platform was operated with amplitudes
Takayuki Miyachi   +6 more
wiley   +1 more source

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