Results 181 to 190 of about 6,573 (250)

Dispersal, source and glass chemistry of a third tephra unit within Iceland's Settlement Layer

open access: yesBoreas, EarlyView.
Tephra layers may be studied to understand the dynamics and sequence of past explosive volcanism. In Iceland, the distinctive Settlement Layer (AD ~877) underlies almost all archaeological evidence for the Norse Settlement and is preserved in soils across Iceland and as cryptotephra overseas.
Conner A. G. Morison   +3 more
wiley   +1 more source

Depositional processes of varved sediments from proglacial Lago Frías since 1800 CE (North Patagonian Andes, Argentina)

open access: yesBoreas, EarlyView.
The glacierized Valle Frías in Northern Patagonia is one of the best‐studied valleys in South America and includes varved sediments from Lago Frías. We complement this lacustrine record with a high‐resolution documentation of varve counts and their composition.
Bernd Zolitschka   +6 more
wiley   +1 more source

Postglacial ecosystem development of a hydrothermal landscape in Yellowstone National Park. [PDF]

open access: yesProc Natl Acad Sci U S A
Whitlock C   +10 more
europepmc   +1 more source

Assessment of Content and Release of Nickel, Cobalt and Lead in Metallic and Rhinestone Nail Charms in the United States

open access: yesContact Dermatitis, EarlyView.
Nail charms are increasingly popular additions to traditional nail treatments. Nickel release was detected in 38.5% of nail charm products by DMG spot test and 67.5% of products by XRF. Nail charms may represent an underrecognized source of consumer exposure in the United States.
Emily Ames   +5 more
wiley   +1 more source

Localised Autophagy Inhibition by Nanodiamonds Potentiates Arsenic Therapy With Favourable Safety Profile in Solid Tumours

open access: yesCell Proliferation, EarlyView.
This study presents an NDs‐mediated localised combination strategy that integrates autophagy inhibition with low‐dose ATO sensitization, enabling effective tumour suppression while enhancing safety. NDs‐mediated autophagy blockade enhances ATO efficacy while minimising systemic toxicity, highlighting a promising approach for solid tumour treatment ...
Yiliu Wang   +8 more
wiley   +1 more source

Evidence for a defensive ceiling in the effectiveness of plant silicon defences against an insect herbivore

open access: yesEcological Entomology, EarlyView.
Silicon‐mediated resistance in wheat reaches a defensive plateau; accumulating silicon beyond 2mM provides no additional benefit for suppressing insect herbivore relative growth rates. Silicon supplementation significantly increases wheat biomass and effectively ameliorates plant mass losses caused by Helicoverpa armigera herbivory. Lower mandible wear
Marie‐Emma Denarié   +4 more
wiley   +1 more source

Svalbard-barents ice sheet instability enhanced delivery of reactive iron to the ocean. [PDF]

open access: yesNat Commun
Tessin A   +10 more
europepmc   +1 more source

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