Results 21 to 30 of about 633 (178)

The triumphal cross of the cathedral of Nevers: painting technique and examination

Medievalista, 2019
The large polychrome wooden cross preserved in the Saint-Cyr et Sainte-Julitte cathedral in Nevers was badly damaged during the bombing in July 1944. Restored and put on display on a modern cross in front of the choir, the sculpture suffered a new fall ...
Nadia Bertoni Cren, Stéphane Cren
doaj   +1 more source

The Recent Discovery, Research, and Restoration of Medieval and Renaissance Frescoes in Riga Castle—A Treasure to the Baltic Region

Heritage, 2023
One of the most important castles of the medieval Teutonic Order—Riga Castle in Latvia—is currently undergoing extensive reconstruction work. This study attempts to summarize recent information about the medieval fresco in the chapel and decorative ...
Madara Rasiņa, Ojārs Spārītis, Jiřina Přikrylová, Martin Racek, Ivana Kopecká, Eva Svobodová, Richard Přikryl   +6 more
doaj   +1 more source

Critical phenomena at the antiferromagnetic phase transition of azurite [PDF]

Journal of the Korean Physical Society, 2013
We report on high-resolution acoustic, specific-heat and thermal expansion measurements in the vicinity of the antiferromagnetic phase transition at T_N = 1.88 K on a high-quality single crystal of the natural mineral azurite. A detailed investigation of the critical contribution to the various quantities at T_N is presented.
Cong, P. T., Wolf, B., Manna, R. S., Brühl, A., Köhler, S., Lang, M.   +5 more
openaire   +2 more sources

Important and influential factors in mineralization and grade changes of Manto-copper deposits with a special look to‌ Nasim, Mes e Sorkh and Zarmehr mines

Journal of Economic Geology
Manto-type copper mines occur in the Bardaskan-Doruneh copper belt. On the basis of structural sedimentary division of Iran, this belt is located in the northeastern part of the Central Iran.
Ali Sheykhi, Mohammad Hassan Karimpour, Ali Asghar Sepahi, Behnam Rahimi   +3 more
doaj   +1 more source

Study of the Antifungal Effects of Copper-based Pigments and Synthesized Nanomaterial on Mural Painting-deteriorated Fungi in the Egyptian Museum in Tahrir

Journal of Architecture, Art & Humanistic Science, 2019
Seven fungal strains, namely: Aspergillus terreus, A. clavatus, A. niger, A. humicola, A. sydowii, Paecilomyces variotii and Fusarium oxyspourm were isolated from Stelae dates back to the 19th Dynasty of the New Kingdom of the reign of King Sity in ...
Seham Mahmoud
doaj   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

Near-Infrared Spectroscopic Study of Secondary Minerals in the Oxidation Zones of Copper-Bearing Deposits

Crystals
This study measured the infrared spectra of secondary minerals in the oxidation zones of three types of copper ores: dioptase, malachite, and azurite, and assigned the peak positions of OH stretching vibrations and the origins of OH combination ...
Shaokun Wu, Mingyue He, Mei Yang, Bijie Peng, Yujia Shi, Kaiyue Sun   +5 more
doaj   +1 more source

THE LIST OF MINERALS OF THE MEDNORUDYANSKOE MALACHITE DEPOSIT: TO THE 200TH ANNIVERSARY OF ITS MINING [PDF]

Минералогия, 2015
The extented list of 97 minerals of the Mednorudyanskoe deposit, Central Urals, is given. Morphology and occurence of cuprite, malachite, azurite, pseudomalachite, libethenite, and brochantite are briefly described.
V.I. Popova, A.F. Bushmakin, A.A. Chudnov, V.A. Popov, I.A Blinov, D.A. Kleymenov   +5 more
doaj  

Image processing methods integrated to imaging and material characterisation for the study of incunabula illustrations: an innovative multi-analytical approach on a case-study

Ge-conservación, 2020
This study focuses on the application of a multi-analytical approach combining image processing techniques, imaging studies and material characterisation of a French late fifteen-early sixteen century incunabulum – the BPE, Inc.438. The first study goal
Silvia Bottura Scardina, Filipe Themudo Barata, Alice Nogueira Alves, Catarina Miguel   +3 more
doaj   +1 more source

Introducing Chemical Vapor Etching (CVE): A Material‐Selective Approach for Surgically Precise Tarnish Removal

Small, EarlyView.
ABSTRACT The controlled removal of corrosion products is a persistent challenge in fields ranging from industrial alloy protection to cultural heritage conservation. Achieving high precision and selectivity in subtractive treatments remains difficult because of chemical complexity and structural heterogeneity of the corrosion layers.
Yumei Chai, Aranzazu Sierra‐Fernández, Yuxing Qin, Raydel Pérez Menéndez, Jianfeng Zhu, Mato Knez   +5 more
wiley   +1 more source