Results 61 to 70 of about 1,299,170 (374)
Journal of Open Archaeology Data, 2021 This dataset presents the results of the petrographic and SEM-EDS analysis of 516 ceramic artefacts sampled from four early medieval sites across Sicily.
Veronica Testolini
doaj +1 more source
Tubular microfossils from ∼2.8 to 2.7Ga-old lacustrine deposits of South Africa: A sign for early origin of eukaryotes? [PDF]
, 2016 Unequivocal evidence for Archean eukaryotic life has been long sought for and is a matter of lively debate. In the absence of unambiguous fossils this debate has focused on biogeochemical signatures and molecular phylogenies.
Altermann, Wladyslaw +3 more
core +2 more sources
Crisoles y moldes en Los Nogales
Estudios Atacameños, 2021 La expansión del Tawantinsuyu en el valle del Aconcagua (Chile central) fue culturalmente mediada y evitando la coerción militar, lo que derivó en distintas formas de aceptación, resistencia y aculturación.
María Teresa Plaza +2 more
doaj +1 more source
Analisis SEM-EDS Beton Normal yang Menggunakan Superplasticizer
Borneo Engineering : Jurnal Teknik Sipil, 2023 Beton merupakan bahan bangunan populer yang diakui kekuatan dan daya tahannya. Para peneliti telah mengeksplorasi penggunaan superplasticizer dan gel C-S-H untuk meningkatkan kualitas beton . Superplasticizer adalah bahan tambahan kimia yang dapat ditambahkan ke campuran beton untuk meningkatkan fluiditas sekaligus menjaga kekuatan.
Yulisya Zuriatni +4 more
openaire +1 more source
SEM-EDS analyses of small craters in stardust aluminium foils: implications for the Wild-2 dust distribution [PDF]
, 2007 Implications for the Wild-2 dust distribution of the statistical results obtained by SEM-EDS from nearly 300 impact craters on aluminium foils of the Stardust sample tray ...
Borg, J. +15 more
core +1 more source
Dry drilling of alloy Ti-6Al-4V [PDF]
, 2005 This work is focused on the combined study of the evolution of tool wear, quality of machined holes and surface integrity of work-piece, in the dry drilling of alloy Ti–6Al–4V. Tool wear was studied with optical microscope and SEM–EDS techniques.
Canteli Fernández, José Antonio +4 more
core +2 more sources
Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy
Advanced Engineering Materials, EarlyView.An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley +1 more source
Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study
Advanced Engineering Materials, EarlyView.Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji +5 more
wiley +1 more source
Ancient tin production: Slags from the Iron Age Carvalhelhos hillfort (NW Iberian Peninsula) [PDF]
, 2018 Provenance and production of tin in the Ancient World has since long been a major topic of discussion among archaeologists. In Western Europe, where significant tin ore (cassiterite) deposits are known, only a few remains of ancient tin production, such ...
Figueiredo, Elin +5 more
core +1 more source
Advanced Engineering Materials, EarlyView.This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti +5 more
wiley +1 more source