Results 141 to 150 of about 107,704 (282)

An Overview of the Rock Art of AlUla: Tracing Changes in Content and Form Across 12,000 Years of Human History

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Between 2018 and 2021, the Identification and Documentation of Immovable Heritage Assets (IDIHA) Project recorded over 19,000 rock art panels in the AlUla (al‐‘Ulā) region of north‐western Saudi Arabia. This study presents a chronological assessment of the corpus, drawing on superimpositions, datable motifs, inscriptions, and varnish formation,
Maria Guagnin, Laura Morabito, Hannah Leighton, Tahani AlMahmoud   +3 more
wiley   +1 more source

Quantitative Elemental Oxides Analysis of Rock Cuttings Using Laser-Induced Breakdown Spectroscopy Coupled with Bayesian Optimization and Support Vector Machine. [PDF]

ACS Omega
Abu Alsaud S, Swanson A.
europepmc   +1 more source

Forensic Discrimination of Aluminum Foil by SR-XRF and ICP-AES

, 2010
Masaaki Kasamatsu, Yasuhiro Suzuki, Shinichi Suzuki, Naoki Miyamoto, Seiya Watanabe, Osamu Shimoda, Masahisa Takatsu, Toshio Nakanishi   +7 more
openalex   +2 more sources

Corneal power modelling with OCT data – Thin and thick lens paraxial models versus raytracing

Acta Ophthalmologica, EarlyView.
Abstract Background Evaluating keratometric power with Zeiss index (PKZ), paraxial thick cornea power (Gullstrand [PG]) and power referenced to the front (PFV) and back vertex plane (PBV) and raytracing power (PR), and modelling the deviation from PKZ with a multivariable linear prediction model.
Achim Langenbucher, Nóra Szentmáry, Alan Cayless, Peter Hoffmann, Jascha Wendelstein   +4 more
wiley   +1 more source

A Correlative X‑ray Bioimaging Triad for Metals in Biomedical Research. [PDF]

Chem Biomed Imaging
C Marchi R, Harkiolaki M, Sadler PJ.
europepmc   +1 more source

Lithic analysis in African archaeology: Advances and key themes

Archaeometry, EarlyView.
Abstract Stone artifacts (lithics) preserve for extended periods; thus they are key evidence for probing the evolution of human technological behaviors. Africa boasts the oldest record of stone artifacts, spanning 3.3 Ma, rare instances of ethnographic stone tool‐making, and stone tool archives from diverse ecological settings, making it an anchor for ...
Deborah I. Olszewski, Amanuel Beyin, Justin Pargeter   +2 more
wiley   +1 more source

Unveiling Raphael's Christ Blessing: Chemical Analysis Reveals Distinctive Underdrawing Techniques and a Rare Early Use of Egyptian Blue in Renaissance Art. [PDF]

ACS Omega
Pozzi F, Ricci C, Morlotti M, Demonte D, Castelli L, Ruberto C, Cucci C, Picollo M, Stefani L, Gargano M.   +9 more
europepmc   +1 more source

Quality from Kent: Preliminary results from the analysis of fifth‐ to seventh‐century silver alloys

Archaeometry, EarlyView.
Abstract This paper explores early results from the chemical and lead isotope analysis of 30 silver‐alloy objects from southeast England dating between the fifth and seventh centuries CE, presenting limited aspects of the three main analyses that were conducted. First, a comparison of the results gained from surface x‐ray fluorescence (pXRF) values and
Toby F. Martin, Matthew J. Ponting
wiley   +1 more source

Optimizing and characterization of titanium dioxide extracted from black sand using response surface methodology (RSM). [PDF]

BMC Chem
Aly ST, Farouk SM, Zaki H, Tohamy TA, Sheikh ME, Sultan AERZ, Fouda M, Mustafa H, Sater OA, Ezzat M, Mabrouk MA.   +10 more
europepmc   +1 more source

Production of arsenical bronze using speiss on the Elephantine Island (Aswan, Egypt) during the Middle Kingdom (Middle Bronze Age) (c.2000–1650 BCE)

Archaeometry, EarlyView.
Abstract This paper presents the first direct evidence of the slags produced during the cementation alloying process of Cu with speiss inside ceramic crucibles, thus representing Cu alloying with As in Middle Kingdom Egypt. The settlement deposits from the Middle Bronze Age were excavated on Elephantine Island, within modern Aswan.
Jiří Kmošek, Martin Odler
wiley   +1 more source