Results 101 to 110 of about 37,366 (283)
Highly fractionated chromium isotopes in Mesoproterozoic-aged shales and atmospheric oxygen
Nature Communications, 2018 There is a long standing debate whether low atmospheric oxygen levels during the Mesoproterozoic Era hindered the evolution of crown-group animals. Here, the authors show with shale-hosted chromium isotopes that sufficient atmospheric oxygen for crown ...
Donald E. Canfield +7 more
doaj +1 more source
Buried Unstrained Germanium Channels: A Lattice‐Matched Platform for Quantum Technology
Advanced Science, EarlyView.ABSTRACT Strained germanium (ε$\varepsilon$‐Ge) and strained silicon (ε$\varepsilon$‐Si) buried quantum wells have enabled advanced spin‐qubit quantum processors. However, in the absence of suitable lattice‐matched substrates, ε$\varepsilon$‐Ge and ε$\varepsilon$‐Si are deposited on defective, metamorphic SiGe buffers, which may impact device ...
Davide Costa +10 more
wiley +1 more source
Ecology and EvolutionWe investigated isotopic diet‐excreta offset (Δdiet‐excreta) for predatory birds, and the isotopic influence of bird digestion on consumed prey tissues.
Brooke Erin Crowley +2 more
doaj +1 more source
Radiation‐Resistant Kr‐Selective MOF With Record Kr/Xe Selectivity at Elevated Pressure
Advanced Science, EarlyView.ABSTRACT The separation of Kr/Xe from spent nuclear fuel off‐gas is critical, yet most current adsorbents exhibit Xe‐Kr co‐adsorption under elevated pressures, posing challenges for industrial pressure swing adsorption processes. Herein, we present and evaluate a metal‐organic framework, CALF‐20M‐w, engineered for molecular sieving separation of Kr/Xe ...
Qihang Tian +6 more
wiley +1 more source
, 2013 The hydrological cycle, or water cycle, embraces and connects all forms of water-related processes in the atmosphere and geosphere, which include water as vapour in, and precipitation from, the atmosphere, and in rivers, lakes, runoff, soil water, and ...
Su, Ninghu +3 more
core
Advanced Science, EarlyView.Nanoscale secondary ion mass spectrometry (Nano SIMS) is established as a powerful analytical tool to visualize and quantify the membrane fouling layers. ABSTRACT Membrane technology has garnered considerable attention for applications in wastewater treatment and resource recovery. Nevertheless, membrane fouling remains a major barrier, yet the lack of
Mengfei Wu +4 more
wiley +1 more source
Non-invasive determination of critical dissolved oxygen thresholds for stress physiology in fish using triple-oxygen stable isotopes and aquatic respirometry [PDF]
Understanding the critical thresholds of dissolved oxygen (O2) that trigger adaptive physiological responses in aquatic organisms is long hampered by a lack of robust, non-lethal or non-invasive methodologies.
Wassenaar, Leonard I. +4 more
core +1 more source
Advanced Science, EarlyView.TarPass provides a rigorous benchmark for target‐aware de novo molecular generation by jointly evaluating protein‐ligand interactions, molecular plausibility, and drug‐likeness on 18 well‐studied targets. Results show that current models often fail to consistently surpass random baseline in target‐specific enrichment, while post hoc multi‐tier virtual ...
Rui Qin +11 more
wiley +1 more source
, 2006 A representative paleoenvironmental reconstruction of continental middle latitude from ca. 2my to the upper part of Middle Pleistocene (279±77ky) was obtained from the carbon and oxygen stable isotopes analyzed in ostracode shells (Cyprideis torosa ...
Torres Pérez-Hidalgo, Trinidad José
core
(Table 2) Oxygen and silicon stable isotopes of diatom silica of sediment core MD01-2416
, 2013 (Table 2) Oxygen and silicon stable isotopes of diatom silica of sediment core MD01 ...
Edith Maier (6967130) +17 more
core +1 more source