Results 101 to 110 of about 130,387 (339)

Intensification in pastoralist cereal use coincides with the expansion of trans-regional networks in the Eurasian Steppe

open access: yes, 2019
The pace of transmission of domesticated cereals, including millet from China as well as wheat and barley from southwest Asia, throughout the vast pastoralist landscapes of the Eurasian Steppe (ES) is unclear.
Makarewicz, C., Ventresca Miller, A.
core   +1 more source

Mass Spectrometric Investigation of the Influence of Water Vapour and Oxygen on Gas‐Phase Reactions of Aluminium Acetylacetonate

open access: yesAdvanced Materials Interfaces, EarlyView.
The gas‐phase decomposition of Al(acac)3 is investigated under inert, oxygen, and water‐containing conditions. Water is found to promote selective ligand removal and suppress hydrocarbon formation, while oxygen induces faster, less selective decomposition pathways.
Ilyas Adaköy   +8 more
wiley   +1 more source

A basin‐wide carbon‐related proxy dataset in arid China

open access: yesGeoscience Data Journal
Closed basin accounts for about one‐fifth of the global land area and is an important part of the global terrestrial carbon cycle. Due to its relatively close geographical environment and independent carbon cycling system, it is an ideal place to study ...
Yu Li   +5 more
doaj   +1 more source

Nanocrystal Quality–Controlled Scintillation in Porous YAG:Ce Aerogels

open access: yesAdvanced Optical Materials, EarlyView.
High‐temperature thermal treatment of YAG:Ce nanoscintillator aerogels increases light yield under ionizing radiation by up to eightfold without affecting timing performance. Additionally, low‐temperature atmospheric treatments reversibly modify the cerium oxidation state, revealing strong defect sensitivity and offering new strategies to optimize ...
Pavlo Mai   +11 more
wiley   +1 more source

Stable isotope records of sei whale baleens from Chilean Patagonia as archives for feeding and migration behavior

open access: yesEcology and Evolution, 2020
Carbon (δ13C) and nitrogen (δ15N) stable isotope variations in baleen plates of sei whales (Balaenoptera borealis) stranded after a mass mortality event in Chilean Patagonia were investigated to assess potential dietary and migratory patterns. Carbon and
Lilian Reiss   +2 more
doaj   +1 more source

Paleoamerican diet, migration and morphology in Brazil [PDF]

open access: yes, 2011
During the early Holocene two main paleoamerican cultures thrived in Brazil: the Tradição Nordeste in the semi-desertic Sertão and the Tradição Itaparica in the high plains of the Planalto Central.
Eggers, Sabine   +3 more
core   +1 more source

A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase

open access: yesAdvanced Science, EarlyView.
Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol   +18 more
wiley   +1 more source

The preservation of atmospheric nitrate in snow at Summit, Greenland [PDF]

open access: yes, 2013
There is great interest in using nitrate NO3 isotopic composition in ice cores to track the history of precursor nitrogen oxides (NOx = NO + NO2) in the atmosphere.
Dibb, Jack E.   +3 more
core   +2 more sources

Climate Change Threatens Micronutrient Density of European Winter Wheat

open access: yesAdvanced Science, EarlyView.
Micronutrients are vital for human health. Wheat is a major staple crop and a significant source of minerals and B‐vitamins. The impact of climate change on their content remains largely unknown. We evaluated micronutrient levels in European winter wheat grown under historical and projected climate conditions. Our findings indicate that future climates
Da Cao   +17 more
wiley   +1 more source

Identification of nitrate sources and transformation in karst cave water using hydrochemistry and NO3− isotopes (δ15N/δ18O) combined with a Bayesian mixing model

open access: yesAll Earth
Nitrogen mainly exists as nitrate in aqueous environments. In karst areas, nitrate pollution caused by anthropogenic activities severely endangers aqueous systems.
Dan Su   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy