Results 31 to 40 of about 666 (170)

Occurrence of realgar and orpiment in Utah [PDF]

open access: yesAmerican Journal of Science, 1881
n ...
openaire   +1 more source

Non-invasive imaging and spectroscopy techniques for identifying historical pigments: a case study of Iranian manuscripts from the Qajar era

open access: yesHeritage Science, 2023
In recent years, the expansion of non-invasive methods has been a trend in identifying historical pigments. Accordingly, this study aimed to identify the pigments used in three Iranian historical manuscripts from the Qajar era by utilizing a non-invasive
Alireza Koochakzaei   +2 more
doaj   +1 more source

Roll‐to‐Roll Mechanical Exfoliation for Large‐Area van der Waals Films with Preserved Crystallographic Alignment

open access: yesAdvanced Functional Materials, Volume 36, Issue 25, 26 March 2026.
A roll‐to‐roll exfoliation method is demonstrated that preserves the crystallographic alignment of anisotropic 2D materials over large areas, enabling scalable fabrication of directional electronic and optoelectronic devices. Abstract Anisotropic 2D materials such as black phosphorus (BP), GeS or CrSBr, exhibit direction‐dependent optical and ...
Esteban Zamora‐Amo   +14 more
wiley   +1 more source

Nineteenth‐Century Watercolour Reproductions of Old Masters in the Ruskin Teaching Collection, Ashmolean Museum, Oxford: Materials and Techniques of ‘Heaven‐Borne’ Copyist Charles Fairfax Murray

open access: yesArchaeometry, Volume 68, Issue 1, Page 64-83, February 2026.
ABSTRACT This study presents the first comprehensive analysis of the pigments and techniques used by Charles Fairfax Murray (1849–1919), a leading expert in Italian Renaissance attribution, influential art collector and primary copyist for John Ruskin.
Victoria Kemp   +3 more
wiley   +1 more source

Trace Elements and Sulfur Isotopes of Sulfides at the Leon Sediment‐Hosted Gold Deposit, Ratatotok District, North Sulawesi, Indonesia: Constraints on the Genesis of Ore Formation

open access: yesResource Geology, Volume 76, Issue 1, January‐December 2026.
The Leon deposit is interpreted as a sediment‐hosted gold deposit with a probable distal intrusion‐centered setting. Hydrothermal fluids migrated through fractures and bedding planes, likely leached sulfur and metals from andesitic rocks, and formed orebodies along bedding planes and at limestone–andesite contacts controlled by permeability contrasts ...
Muhammad Arba Azzaman   +8 more
wiley   +1 more source

Do You See What I See? Aspects of Color Choice and Perception in Ancient Egyptian Painting

open access: yesOpen Archaeology, 2018
Color in ancient Egypt has been examined through linguistics, anthropological theory and archaeological science. In recent years, attention has focused on the application of art historical theories of reception and perception to ancient Egyptian art, but
Strong Meghan E.
doaj   +1 more source

Application of k0-method of neutron activation analysis for determination of trace elements in various mineral samples: a review

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2015
Various trace elements in different types of arsenic (orpiment, As2S3; realgar, As4S4; lorandite, TlAsS2), antimony (stibnite, Sb2S3), copper (brochantite, Cu4SO4(OH)6; chalcanthite, CuSO4·5H2O; chalcopyrite, CuFeS2; covellite, CuS; native copper, Cu ...
Radojko Jacimovic   +4 more
doaj   +1 more source

Overview of acute Chinese medicine poisoning in Hong Kong

open access: yesHong Kong Journal of Emergency Medicine, Volume 32, Issue 6, December 2025.
Abstract Background Chinese medicine (CM) poisoning is relatively rare in Hong Kong. According to the Department of Health, only 17 cases of self‐medicated Traditional Chinese Medicine (TCM)‐related poisoning were reported between 2019 and 2021—an average of approximately 5.7 cases per year.
Siu Kan Law, Yanping Wang, Xiao Xiao Wu
wiley   +1 more source

Innovative Application of Traditional Paper Marbling Technique in the Fabrication of Ceramic Glazes

open access: yesInternational Journal of Ceramic Engineering &Science, Volume 7, Issue 6, November 2025.
ABSTRACT This research introduces an innovative approach for decorating ceramic surfaces through systematic reformulation of the historic paper marbling process for application in ceramic glaze. Despite as much as marbling has a longstanding history in the paper, textile, and diverse decorative arts, application in ceramics is largely unexamined.
Zeinab Abedian Jelodar, Somayeh Noghani
wiley   +1 more source

Methane‐Driven Arsenic Biogeochemical Cycling in Deep‐Sea Cold Seeps: Implications for Oceanic Arsenic Geochemistry

open access: yesGeophysical Research Letters, Volume 52, Issue 16, 28 August 2025.
Abstract Arsenic accumulation in seafloor cold seeps is poorly understood. Here, we investigate the interplay between arsenic and methane biogeochemical cycles at the Haima cold seep, South China Sea. Geochemical analyses showed elevated arsenic levels in seep sediments, primarily as sulfide‐bound forms, with strong correlations between dissolved ...
Jiwei Li   +12 more
wiley   +1 more source

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