Results 221 to 230 of about 644,725 (312)

Application of Group‐Theoretical Approaches in Structural Natural Frequency Analyses

International Journal for Numerical Methods in Engineering, Volume 127, Issue 7, 15 April 2026.
ABSTRACT Group theory has profoundly advanced physics and chemistry in systems with symmetries. Yet its use in structural engineering applications has not yet been fully explored beyond the aesthetics of symmetric designs. This work addresses two significant gaps that have limited the broader adoption of group‐theoretic methods in structural vibration ...
Shiyao Sun, Kapil Khandelwal
wiley   +1 more source

Establishing an Ecuadorian Isoscape: The Importance of Baseline Strontium Data in a Volcanic Landscape. [PDF]

Am J Biol Anthropol
Juengst SL, Alvarez MPO.
europepmc   +1 more source

Chamber‐by‐Chamber Measurements of Planktonic Foraminiferal Mg, Sr, and Na to Ca Ratios With Femtosecond LA‐ICP‐MS

Rapid Communications in Mass Spectrometry, Volume 40, Issue 7, 15 April 2026.
ABSTRACT Rationale Distribution patterns of foraminifera are controlled by environmental parameters such as temperature, salinity, and nutrient concentrations in each water mass. Since trace elements to Ca ratios of marine microfossil calcite test of foraminifera record environmental and ecological habitat information, we used femtosecond (fs) LA‐ICP ...
Toshihiro Yoshimura, Qing Chang, Naohiko Ohkouchi, Yoshiyuki Ishitani, Dana Ulanova, Hirotoshi Endo, Junichiro Kuroda, Yurika Ujiié   +7 more
wiley   +1 more source

Elemental Composition and Strontium Isotopic Ratio Analysis of Industrial Hemp (<i>Cannabis sativa</i> L.) for Textile Applications. [PDF]

Molecules
Rivi M, D'Eusanio V, Marchetti A, Bonfiglioli E, Tassi L.   +4 more
europepmc   +1 more source

Catalytic Autoxidation for Depolymerization of Multilayer Plastic Films

ChemSusChem, Volume 19, Issue 7, 14 April 2026.
Catalytic autoxidation using a Co/Mn/Br catalyst system depolymerizes diverse polymers in multilayer plastic films, generating oxygenated small molecules such as dicarboxylic acids. The method tolerates additives and disrupters and converts up to 48 mol% polymer carbon into soluble products, enabling chemical recycling of complex plastic waste ...
Ciaran W. Lahive, Amy A. Cuthbertson, Anna N. Walsh, Sydney E. Reiber, Hannah M. Alt, Brenna A. Black, Christopher Botello, Jason S. DesVeaux, Spencer Lask, Clarissa Lincoln, William E. Michener, Joel Miscall, Kelsey J. Ramirez, Lisa M. Stanley, Sean P. Woodworth, Shannon S. Stahl, Gregg T. Beckham   +16 more
wiley   +1 more source

Isotope analyses reveal chronological and bioarchaeological consistency at a tribal community of the Sântana de Mureș-Chernyakhov culture in Transylvania. [PDF]

Sci Rep
Major I, Horváth A, Futó I, Gál SS, Szigeti A, Molnár M, Körösfői Z.   +6 more
europepmc   +1 more source

Reconstruction of the lifeways of Central European Late Bronze Age communities using ancient DNA, isotope and osteoarchaeological analyses. [PDF]

Nat Commun
Orfanou E, Ghalichi A, Rohrlach AB, Paust E, Andrades Valtueña A, Ernée M, Furmanek M, Hałuszko A, Hermes T, Himmel M, Ilgner J, Krause J, Küßner M, Lamnidis TC, Lucas M, Adámková Malyková D, Meller H, Neumann GU, Papac L, Penske S, Salinger M, Schrader SA, Schunke T, Semerau L, Smejtek L, Traverso L, Zach B, Spengler R, Stockhammer PW, Wahl J, Snoeck C, Ettel P, Schneider FN, Roberts P, Haak W.   +34 more
europepmc   +1 more source

An isotopic perspective on equid selection in cult at Tell eṣ-Ṣâfi/Gath, Israel. [PDF]

PLoS One
Arnold ER, Greenfield HJ, Hartman G, Greenfield TL, Albaz S, Boaretto E, Regev J, Maeir AM.   +7 more
europepmc   +1 more source

Spatio-temporal variations of strontium isotope ratios in the Mur River: a tool to support river management. [PDF]

Aquat Sci
Moser U, Čeplak B, Wagner S, Lancaster ST, Šala M, Prohaska T, Žibret G, Irrgeher J.   +7 more
europepmc   +1 more source

An integrated framework to identify and characterize regional-scale insect dispersal. [PDF]

Ecol Appl
Dargent F, Reich MS, Miller M, Studens K, Benvidi N, Perrault K, Aibueku J, Holmes B, Bataille CP, Candau JN.   +9 more
europepmc   +1 more source