Results 121 to 130 of about 666 (170)

Scientific Analysis of the Polychrome Paintings on the Stele Pavilion of Guandi Temple in Shanxi, China. [PDF]

Materials (Basel)
Li L, Wang X, Wu S, Liu F, Liang R, Tang M.   +5 more
europepmc   +1 more source

Non-linear frequency-doubling up-conversion in sulfide minerals enables deep-sea oxygenic photosynthesis. [PDF]

Natl Sci Rev
Li Y, Zhu J, Li Q, Hong H, Li T, Jia H, Hou B, Lu H, Li Y, Xie J, Wang F, Ye H, Liu K, Lu A, Zhao J.   +14 more
europepmc   +1 more source

Illuminating Rembrandt's <i>Chiaroscuro</i> in <i>The Night Watch</i>: the painting process of Van Ruytenburch's costume. [PDF]

NPJ Herit Sci
De Keyser N, van Loon A, Gabrieli F, Vanmeert F, Broers FTH, Noble P, De Meyer S, Gestels A, Gonzalez V, Almasian M, van der Werf I, Hermens E, Janssens K, Keune K.   +13 more
europepmc   +1 more source

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Structure Comparison of Orpiment and Realgar by Raman Spectroscopy

Spectroscopy Letters, 2017
Raman spectroscopy was used to characterize and differentiate the two minerals, Orpiment and Realgar, and the bands related to the mineral structure.
Hongfei Cheng, Yi Zhou
exaly   +3 more sources

Torsion Measurement of Orpiment Vapor Pressure

Journal of Chemical & Engineering Data, 2007
Total vapor pressures of orpiment, As2S3, were measured by the torsion effusion method, and their dependence was found to fit the following equation: log(p/kPa) = (14.14 +/- 0.20) - (9160 +/- 200)center dot(T/K) in the temperature range (501 to 583) K.
B Brunetti, V Piacente, P Scardala
openaire   +3 more sources

Orpiment

Mineralogical Magazine and Journal of the Mineralogical Society, 1892
The crystalline form of orpiment was first determined by Mohs (Grundriss der Mineralogie (1824), 2, 613).His measurements, which he is careful to state were only approximate, gave an angle of 79°20' for the prism, and 83°7' for the brachydome; the plane of perfect cleavage being taken as the macropinakoid, and the crystals being referred to the ...
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All That Glitters May Be Orpiment!

Indian Journal of History of Science
Ramanathan Venkatnarayan
exaly   +2 more sources

Terahertz spectroscopy and lattice vibrational analysis of pararealgar and orpiment

Chinese Physics B, 2022
Terahertz time-domain spectroscopy (THz-TDS) is an effective nondestructive and noninvasive tool for investigating sulfur-containing pigments. Combined with Raman spectroscopy and vibrational mode analysis, it is significant for artifact identification and conservation. In this work, the terahertz absorption spectra of pararealgar (As4S4) and orpiment (
Ya-Wei Zhang, Guan-Hua Ren, Xiao-Qiang Su, Tian-Hua Meng, Guo-Zhong Zhao   +4 more
openaire   +1 more source

Cleaved Natural Orpiment (As2S3) by XPS

Surface Science Spectra, 2006
Orpiment (As2S3) is an arsenic ore mineral formed in low temperature hydrothermal veins and hotsprings, and commonly associated with other arsenic minerals such as realgar (AsS). It is of significance environmentally in areas affected by acid mine drainage where oxidation causes both the generation of acid and the release of arsenic in surface water ...
Claire Corkhill
exaly   +4 more sources