Results 11 to 20 of about 23,535 (202)

Insights into constraining coastal carbon export from radioisotopes [PDF]

open access: goldFrontiers in Marine Science, 2023
Coastal shelves are important regions for carbon transformation and storage, however, constraining coastal carbon budgets and their uncertainties remains a challenge.
Erin E. Black   +4 more
doaj   +3 more sources

Development and characterization of carbon-bonded carbon fiber insulation for radioisotope space power systems [PDF]

open access: green, 1985
The General-Purpose Heat Source (GPHS), an improved radioisotope heat source, employs a unique thermal insulation material, carbon-bonded carbon fiber (CBCF), to protect the fuel capsule and to help achieve the highest possible specific power. The CBCF insulation is made from chopped rayon fiber about 10 ..mu..m in diameter and 250 ..mu..m long, which ...
Wei, G. C., Robbins, J. M.
openaire   +4 more sources

Novel reverse radioisotope labelling experiment reveals carbon assimilation of marine calcifiers under ocean acidification conditions [PDF]

open access: bronzeMethods in Ecology and Evolution, 2020
Abstract Ocean acidification by anthropogenic carbon dioxide emissions is projected to depress metabolic and physiological activity in marine calcifiers. To evaluate the sensitivity of marine organisms against ocean acidification, the assimilation of nutrients into ...
Kozue Nishida   +9 more
openaire   +2 more sources

Removal of radioisotopes in solution and bactericidal/bacteriostatic sterilising power in activated carbon and metal silver filters [PDF]

open access: greenEnvironmental Toxicology and Pharmacology, 2009
Activated carbon filters play an important role in water filtration and purification from contaminants of different origin. Their limit consists in bacterial proliferation, which may occur only during prolonged periods of non-use and in their ability to remove radioactive contaminants present in waste water from Industry or Nuclear Medicine departments.
C. Maioli   +4 more
openaire   +4 more sources

Synthesis and Characterization of Nanostructured Thorium Carbide for Radioactive Ion Beam Production [PDF]

open access: yesNanomaterials
Thorium carbide (ThC2±x) nano-structured thin disc-like pellets were produced from thoria nanoparticles (ThO2-NP) and multi-walled carbon nanotubes (MWCNT).
Edgar Reis   +8 more
doaj   +2 more sources

Beyond Accelerator Mass Spectrometry: Recent Developments in All-Optical Measurements of Radioisotope Carbon

open access: goldACS Omega
The environmental impact of non-renewable energy has come under scrutiny, prompting investments in carbon management strategies like renewable fuels. The presence of radiocarbon in biofuel blends can validate their composition for government regulators and quality control.
Gordon H. K. Duddy   +2 more
openaire   +3 more sources

Production of carbon-11 for PET preclinical imaging using a high-repetition rate laser-driven proton source [PDF]

open access: yesScientific Reports
Most advanced medical imaging techniques, such as positron-emission tomography (PET), require tracers that are produced in conventional particle accelerators.
Juan Peñas   +12 more
doaj   +2 more sources

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+5 more sources

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