Results 101 to 110 of about 140,705 (288)
Geology and geochemistry of sulfide and sulfate deposition [PDF]
Factors contributing to the geology and geochemistry of sulfide and sulfate deposition are discussed.
Holser, W. T.
core +1 more source
Stable isotopes in diatom silica [PDF]
, 2010 Diatom silica is a form of biogenic opal (SiO2.nH2O, Figure 1) containing oxygen, silicon, carbon and nitrogen isotopes that can be used in lacustrine and marine paleoenvironmental studies.
Leng, Melanie J., Swann, George E.A.
core
Oxygen isotopic ratios in intermediate-mass red giants [PDF]
, 2015 Context. The abundances of the three main isotopes of oxygen are altered in the course of the CNO-cycle. When the first dredge-up mixes the burning products to the surface, the nucleosynthesis processes can be probed by measuring oxygen isotopic ratios ...
Aringer, Bernhard +4 more
core +2 more sources
Advanced Science, EarlyView.The butterfly unfolded wing in an open form structure of botulinum neurotoxin type A (BoNT/A) at physiological‐state was confirmed at 2.85 Å resolution by cryo‐electron microscopy (cryo‐EM). Structure‐guided protein engineering significantly enhanced the receptor‐binding affinity, therapeutic efficacy, and safety of the engineered toxin variants ...
Wenrui Wang +16 more
wiley +1 more source
Using oxygen isotope analysis and a multi-isotopic approach in determining the region of origin of human remains [PDF]
, 2017 Multi-isotopic approaches have been used effectively to help provide estimated geographic origins for unidentified skeletal remains in cold case homicides and archaeological contexts, when DNA testing was not practical.
Eck, Christopher John
core
Advanced Science, EarlyView.Nitrosyl heme emerges as an extracellular nitrodilator that dilates arteries without crossing the cell membrane. Instead, heme‐NO mobilizes NO moieties from a preformed intracellular NO store within vascular smooth muscle, providing both functional and chemical evidence for the NANOS model, revealing a previously unrecognized mechanism of arterial ...
Taiming Liu +9 more
wiley +1 more source
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
New magic number for neutron rich Sn isotopes
, 2010 The variation of E(2+_1) of (134-140)Sn calculated with empirical SMPN interaction has striking similarity with that of experimental E(2+_1) of even-even (18-22)O and (42-48)Ca, showing clearly that N=84-88 spectra exhibit the effect of gradual filling ...
M. Saha Sarkar +3 more
core +1 more source
PET Imaging of Cardiac Inflammation in Viral Myocarditis Using a DPP4‐Targeted Probe
Advanced Science, EarlyView.This study describes a DPP4‐targeted PET probe for imaging myocardial inflammation by selectively targeting activated immune cells. Derived from the clinically approved small‐molecule inhibitor linagliptin, the probe demonstrates favorable biodistribution with specific cardiac uptake in myocarditis.
Wanhao Gao +14 more
wiley +1 more source
Advanced Science, EarlyView.This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang +6 more
wiley +1 more source