Results 101 to 110 of about 2,942 (197)

Quality from Kent: Preliminary results from the analysis of fifth‐ to seventh‐century silver alloys

open access: yesArchaeometry, Volume 68, Issue S4, Page S10-S38, July 2026.
Abstract This paper explores early results from the chemical and lead isotope analysis of 30 silver‐alloy objects from southeast England dating between the fifth and seventh centuries CE, presenting limited aspects of the three main analyses that were conducted. First, a comparison of the results gained from surface x‐ray fluorescence (pXRF) values and
Toby F. Martin, Matthew J. Ponting
wiley   +1 more source

The Provenance of Silver in the Viking‐Age Hoard From Bedale, North Yorkshire

open access: yesArchaeometry, Volume 68, Issue S4, Page S86-S106, July 2026.
ABSTRACT The acquisition of silver was a key motive propelling the Viking expansion out of Scandinavia; identifying the sources of Viking silver during the early part of the Viking Age can provide critical insights into the relative significance of western European and eastern, Islamic wealth in the Viking expansion.
Jane Kershaw   +5 more
wiley   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

open access: yesBoreas, Volume 55, Issue 3, Page 768-789, July 2026.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo   +5 more
wiley   +1 more source

An N‐acetyltransferase‐MAPK fusion protein modulates developmental reprogramming in Physcomitrium patens

open access: yesNew Phytologist, Volume 251, Issue 1, Page 321-339, July 2026.
Summary We discovered a previously uncharacterized moss‐specific protein, Rosetta NATD‐MAPK 1 (RAK1) in Physcomitrium patens, which uniquely integrates MAP kinase (MAPK)‐dependent signaling with N‐acetyltransferase activity. Through phenotypical and biochemical analyses, we characterized RAK1 function in the regulation of the 2D‐to‐3D growth transition.
Cloe de Luxán‐Hernández   +17 more
wiley   +1 more source

Thermal and Photocatalytic Conversion of CO2 to Ethanol: Advances in Catalyst Design, Challenges, and Opportunities

open access: yesChemSusChem, Volume 19, Issue 12, 26 June 2026.
This review examines thermo‐ and photocatalytic routes for converting CO2 to ethanol and analyzes how metal alloying, promoters, supports, surface structure, and semiconductor design govern catalyst activity, selectivity, and stability. It integrates mechanistic insights from experimental and theoretical studies and identifies the main challenges and ...
Bryan Rocano‐Merchan   +7 more
wiley   +1 more source

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