Results 141 to 150 of about 1,187 (190)

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

The use of leaded paints in an urban neighborhood in Quito, Ecuador: A case study. [PDF]

Sci Rep
Navarrete H, Yánez-Jácome GS, Vélez-Terreros PY.   +2 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

Mineral medicines of the East: an analysis of records in historical Chinese and Japanese medical texts. [PDF]

Front Pharmacol
Dai M, Wang D.
europepmc   +1 more source

Research progress on arsenic, arsenic-containing medicinal materials, and arsenic-containing preparations: clinical application, pharmacological effects, and toxicity. [PDF]

Front Pharmacol
Yang Y, Li Y, Li R, Wang Z.
europepmc   +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 L Corkhill, David J Vaughan
exaly   +5 more sources

Microbial-mediated oxidative dissolution of orpiment and realgar in circumneutral aquatic environments

Water Research
Arsenic (As) is a toxic metalloid that causes severe environmental contamination worldwide. Upon exposure to aqueous phases, the As-bearing minerals, such as orpiment (As2S3) and realgar (As4S4), undergo oxidative dissolution, in which biotic and abiotic activities both contributed significant roles.
Duanyi Huang, Mohsen Soleimani, Pin Gao   +2 more
exaly   +4 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   +4 more sources