New approaches to investigating the function of mycelial networks [PDF]
, 2005 Fungi play a key role in ecosystem nutrient cycles by scavenging, concentrating, translocating and redistributing nitrogen. To quantify and predict fungal nitrogen redistribution, and assess the importance of the integrity of fungal networks in soil for ...
Boddy, Lynne +6 more
core +1 more source
Direct arene C–H fluorination with 18F− via organic photoredox catalysis
Science, 2019 A metal-free route to PET probes Positron emission tomography (PET) is a widely used imaging technique for medical diagnostics and pharmaceutical development.
Wei Chen +8 more
semanticscholar +1 more source
Anomalies in Radioactive Decay Rates: A Bibliography of Measurements and Theory [PDF]
arXiv, 2020 Knowledge of the decay rates (or half-lives) of radioisotopes is critical in many fields, including medicine, archeology, and nuclear physics, to name just a few. Central to the many uses of radioisotopes is the belief that decay rates are fundamental constants of nature, just as the masses of the radioisotopes themselves are. Recently, the belief that
arxiv
Triggering Collapse of the Presolar Dense Cloud Core and Injecting Short-Lived Radioisotopes with a Shock Wave. III. Rotating Three Dimensional Cloud Cores [PDF]
, 2014 A key test of the supernova triggering and injection hypothesis for the origin of the solar system's short-lived radioisotopes is to reproduce the inferred initial abundances of these isotopes. We present here the most detailed models to date of the shock wave triggering and injection process, where shock waves with varied properties strike fully three
arxiv +1 more source
Evidence from stable isotopes and Be-10 for solar system formation triggered by a low-mass supernova
, 2016 About 4.6 billion years ago, some event disturbed a cloud of gas and dust, triggering the gravitational collapse that led to the formation of the solar system.
Banerjee, Projjwal +3 more
core +2 more sources
Triggering Collapse of the Presolar Dense Cloud Core and Injecting Short-Lived Radioisotopes with a Shock Wave. V. Nonisothermal Collapse Regime [PDF]
, 2017 Recent meteoritical analyses support an initial abundance of the short-lived radioisotope $^{60}$Fe that may be high enough to require nucleosynthesis in a core collapse supernova, followed by rapid incorporation into primitive meteoritical components, rather than a scenario where such isotopes were inherited from a well-mixed region of a giant ...
arxiv +1 more source
An experimental apparatus for study of direct β-radiation conversion for energy harvesting [PDF]
Proc. PowerMEMS 2012, pp. 428-431, 2014 This paper introduces the development and testing of an experimental apparatus for characterization of a direct charging nuclear battery. The battery consists of a parallel-plates capacitor which is charged in a vacuum by the current of {\beta}-radiation particles (electrons) emitted from a radioisotope.
arxiv
Progress of photonuclear cross sections for medical radioisotope production at the SLEGS energy domain [PDF]
Nuclear Science and Techniques (2023) 34, 187Photonuclear reactions using a laser Compton scattering (LCS) gamma source provide a new method for producing radioisotopes for medical applications. Compared with the conventional method, this method has the advantages of a high specific activity and less heat.
arxiv +1 more source
Evaluation of Gamma Penetration through Plain Carbon Steels
, 2014 In this study, 1010, 1040, 1050 and 1090 carbonized steels were investigated against gamma radioisotope sources on their gamma attenuation properties. Co-60, Cs-137 and Ir-192 gamma radioisotopes which are commonly used in industrial applications were ...
H. Durmaz, A. Beril Tuğrul, B. Buyuk
semanticscholar +1 more source
PICES Press, Vol. 7, No. 1, January 1999 [PDF]
, 1999 Taking stock and looking to the future - note from former PICES Chairman The state of the western North Pacific in the first half of 1998 The status of the Bering Sea in the first eight month of 1998 The state of the eastern North Pacific since ...
core