Publications by authors named "Ashley Norris"
It is 50 years since Sieveking et al. published their pioneering research in Nature on the geochemical analysis of artefacts from Neolithic flint mines in southern Britain. In the decades since, geochemical techniques to source stone artefacts have flourished globally, with a renaissance in recent years from new instrumentation, data analysis, and machine learning techniques.
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- Neural implants that provide electrical stimulation to the nervous system are now common treatments for neurological disorders and are used for research on nervous system functions.
- The study presents a new method for removing noise (artifacts) from these recordings, which can significantly improve the quality of data collected from neural recordings.
- This artifact removal technique is versatile and efficient, applicable across various stimulation and recording setups, and shows a typical improvement in recording clarity by 25-40 dB.
The silicate Earth is strongly depleted in moderately volatile elements (such as lead, zinc, indium and alkali elements) relative to CI chondrites, the meteorites that compositionally most closely resemble the Sun. This depletion may be explained qualitatively by accretion of 10 to 20 per cent of a volatile-rich body to a reduced volatile-free proto-Earth, followed by partial extraction of some elements to the core. However, there are several unanswered questions regarding the sources of Earth's volatiles, notably the overabundance of indium in the silicate Earth.
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