Results 181 to 190 of about 36,721,275 (294)

Calcium Isotopic Composition in Reindeer (Rangifer tarandus) Bones and Tooth Enamel: A Scalable Tool to Quantify Nursing Frequency in Past and Modern Populations?

Rapid Communications in Mass Spectrometry, Volume 40, Issue 23, 15 December 2026.
ABSTRACT Rationale Populations of North American caribou and Eurasian reindeer (Rangifer tarandus sspp.), essential for Arctic ecosystems and human communities, are experiencing unprecedented declines due to climate change and anthropogenic pressures. While understanding their historical resilience and demographic dynamics is critical for conservation,
Auguste Hassler, Eve E. Lindroos, Lu Yang, Zoltan Mester, Kate Britton, Clément P. Bataille   +5 more
wiley   +1 more source

Measurement of ²²⁷Ac by Isotopic Ratio with ²²⁵Ac Using ICP-MS. [PDF]

ACS Omega
Baumeister JE, Puffer BW, Hawkins CA, McCormick JB, Toro-González M, Brown JW, De Vries DJ.   +6 more
europepmc   +1 more source

Metabolic Profiling of Circulating and Tumour‐Infiltrating T Cells Uncovers Bioenergetic Checkpoints Linked With Immune and Clinical Skewing in Melanoma Patients

Immunology, Volume 179, Issue 3, Page 486-515, November 2026.
In this study, we revealed the disturbed metabolic status of circulating and tumour‐infiltrating CD4+ and CD8+ T cells in melanoma patients through targeted metabolomic and lipidomic (on sorted subsets) and at single cell level using the SCENITH method.
Hugo Brouque, Kareem Mahdy, Stephane Mouret, Sylvain Henry, Camille Niveau, Mélanie Cettour‐Cave, Martin Pelosse, Florence de Fraipont, Julie Charles, Andrei Turtoi, Philippe Saas, Caroline Aspord   +11 more
wiley   +1 more source

Trace element systematics constrain the origin of fluids that form gem-quality diamonds. [PDF]

Commun Earth Environ
Rakipov A, Woodland AB, Nestola F, Galiè M, Pamato MG, Novella D, Day MC, Erhardt T, Müller W.   +8 more
europepmc   +1 more source

Symbiont‐Mediated Molybdenum Cycling Shapes Coral Skeletal Mo Isotopes

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Coral skeletal trace‐metal compositions are commonly assumed to derive from seawater, yet the extent to which biological processes contribute remains poorly constrained. Here we present the first paired Mo isotope measurements of coral tissue, symbiotic zooxanthellae, and skeleton.
Xuefei Chen, Wenfeng Deng, Zhibing Wang, Yangrui Guo, Jie Li, Xiaolei Yu, Hui Huang, Gangjian Wei   +7 more
wiley   +1 more source

High-resolution XRF-CS/ICP-MS mineral element data calibration and potential applications in sub-Antarctic peat records. [PDF]

Sci Rep
De Vleeschouwer F, Roberts SJ, Le Roux G, Bishop T, Davies SJ, Gallego-Sala A, Green C, Perren B, Saunders KM, Whittle A, Dhunna AL, Hodgson DA.   +11 more
europepmc   +1 more source

Pd/C‐Catalyzed Denitrogenative Dehydrogenation of Primary Azides to Nitriles in Batch and Continuous Flow

Advanced Synthesis &Catalysis, Volume 368, Issue 20, 16 October 2026.
A practical Pd/C‐catalyzed conversion of primary azides to nitriles was investigated under batch and continuous‐flow conditions. This transformation proceeds via net denitrogenative dehydrogenation without an external carbon source. The addition of methyl acrylate or styrene suppresses the formation of reductive byproducts, providing selective access ...
Naoya Sakurada, Takanori Kitazono, Hikaru Naito, Seiya Ootori, Tsuyoshi Yamada, Tomohiro Ichikawa, Takashi Shigeta, Takashi Ikawa, Hironao Sajiki   +8 more
wiley   +1 more source

Sequential versus Simultaneous Quantitative Analysis of Biomarkers in Individual Cells by ICP-MS and Mass Cytometry: A Focus on Immunotherapy. [PDF]

Anal Chem
de la Rosa-Díaz Á, Sordo-Bahamonde C, Gonzalez S, Corte-Rodriguez M, Montes-Bayón M.   +4 more
europepmc   +1 more source

Nickel‐Substituted Rubredoxin Undergoes Demetallation Upon Reaction With Nitric Oxide and Nitroxyl

ChemBioChem, Volume 27, Issue 19, 14 October 2026.
Rubredoxin is a thermally stable thiolate iron‐bound protein that can be prepared as a nickel‐substituted one. This nickel protein showed sensitivity to reaction with NO and HNO donors, causing its demetallation. Notably, these reactions exhibit spectroscopic profiles in the ultraviolet–visible and fluorescence with potential bioanalytical use.
Eduardo H. S. Sousa, Thiago Maciel Bastos, Ana C. S. Gondim, Wellinson G. Guimarães, Marcelo H. M. da Silva, Marta S. P. Carepo, Sofia R. Pauleta, Isabel Moura, José J. G. Moura   +8 more
wiley   +1 more source

Carbonate- and silicate-metasomatized mantle beneath Himalayan-Tibetan orogenic belt. [PDF]

Commun Earth Environ
Li W, Yang Z, Zajacz Z, Zhou L, Hou Z.
europepmc   +1 more source