Results 41 to 50 of about 4,938 (215)

Azurite: An algebraic geometry based package for finding bases of loop integrals

, 2017
For any given Feynman graph, the set of integrals with all possible powers of the propagators spans a vector space of finite dimension. We introduce the package {\sc Azurite} ({\bf A ZUR}ich-bred method for finding master {\bf I}n{\bf TE}grals), which ...
Georgoudis, Alessandro, Larsen, Kasper J., Zhang, Yang   +2 more
core   +1 more source

Tuning the Surface State and Zeta Potential of Aged CuO Nanoparticles by Additive‐Free Surface Treatments as Guided by XPS

Advanced Materials, Volume 38, Issue 5, 22 January 2026.
Aging of CuO nanoparticles (NP) involves a surface reconstruction induced by hydroxylation and concurrent organic‐O adsorption, which introduces O defects in the NP subsurface region. The defective surface results in a diffuse surface space region, as reflected by a low ζ‐potential of the aged NPs in ethanol solvent.
Anastasia S. Batenkova, Bastian Rheingans, Claudia Cancellieri, Lars P.H. Jeurgens   +3 more
wiley   +1 more source

Pigment identification with optical coherence tomography and multispectral imaging [PDF]

, 2008
We describe a new method for non-invasive pigment identification by combining the spectral reflectance in the visible spectrum with near infrared OCT cross-section images of the subsurface layer ...
Keita, K, Liang, H, Peric, B, Vajzovic, T   +3 more
core  

Global Copper Deposit Dataset: A New Open‐Source Database for Advanced Data Analysis and Exploration Targeting

Geoscience Data Journal, Volume 13, Issue 1, January 2026.
We build a new, open‐source global copper deposit dataset (GCDD), facilitating AI‐driven data analysis for exploration targeting and improving our understanding of copper mineralizing systems and their mappable expressions. The GCDD hosts information about 1483 copper deposits worldwide, capturing key deposit attributes such as location, genetic type ...
Bin Wang, Renguang Zuo, Oliver P. Kreuzer   +2 more
wiley   +1 more source

Research on the Hyperspectral-based Unmixing Model of Composite Pigments on Mural Surfaces [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Murals constitute an invaluable component of cultural heritage, encapsulating profound artistic and historical significance. Hyperspectral remote sensing, as a non-destructive testing technique, offers an effective means for analysing and identifying ...
Y. Zhang, Y. Zhang, S. Lyu, S. Lyu, M. Hou, M. Hou, J. Guo, J. Yan, J. Yan   +8 more
doaj   +1 more source

Hematite Formation During Skarn Mineralization in the Akatani Iron Deposit, Niigata Prefecture, Japan

Resource Geology, Volume 76, Issue 1, January/December 2026.
The Akatani Fe deposit in NE Japan has been regarded as a skarn deposit because iron‐oxide ores occur within marble‐hosted skarn near the Cretaceous Ninoujidake granite. U–Pb dating of fluorapatite in the skarn indicates that this skarn formed in the Late Cretaceous, contemporaneous with the granite.
Kotaro Seno, Yasushi Watanabe, Takuya Echigo, Shogo Aoki, Keita Itano, Shota Satori, Yoshiaki Kon   +6 more
wiley   +1 more source

Characterization and digital restauration of XIV-XV centuries written parchments by means of non-destructive techniques. Three case studies [PDF]

, 2018
Parchment is the primary writing medium of the majority of documents with cultural importance. Unfortunately, this material suffers of several mechanisms of degradation that affect its chemical-physical structure and the readability of text.
Pronti, L., Perino, Michela, Cursi, M., Santarelli, M. L., Felici, A. C., Bracciale, M. P.   +5 more
core   +3 more sources

Percent‐Level Copper Mineralisation Promoted by Copper‐Tolerant Iron‐Oxidising Bacteria in Circumneutral Mine Drainage

Environmental Microbiology, Volume 27, Issue 12, December 2025.
A neutrophilic Fe(II)‐oxidizing Gallionellaceae was isolated from circumneutral Cu mine drainage. It mediated Fe(III) biomineralization, resulting in pronounced Cu accumulation (up to 2 wt%) within the solid precipitates. ABSTRACT Geomicrobiology of copper (Cu) and iron (Fe) in circumneutral‐pH drainage from a Japanese Cu mine was investigated, with a ...
Kazuya Tanimoto, Shingo Kato, Kohei Tokunaga, Natsuko Hamamura, Moriya Ohkuma, Satoshi Mitsunobu   +5 more
wiley   +1 more source

MINERALOGY OF GOLD AND SILVER OF GOSSANS OF THE ALEXANDRINSKOE DEPOSIT (SOUTH URALS) [PDF]

Минералогия, 2017
The precious metal minerals were found in gossans of the Alexandrinskoe deposit: native gold with 4.64–9.39 wt. % Cu, Cu-bearing mercurian electrum, members of the bromargyrite-chlorargyrite series and iodargyrite.
I.A. Blinov, E.V. Belogub, K.A. Novoselov   +2 more
doaj  

Mineral pigments at Huaca Tacaynamo (Chan Chan, Peru)

Bulletin de l'Institut Français d'Études Andines, 2008
X-ray diffraction analyses of five samples of pigments from a recently excavated mural at the archaeological site of Huaca Tacaynamo, a part of the Chan Chan archaeological complex, northern Peru, show that minerals related to metal occurrences known to ...
William E. Brooks, Víctor Piminchumo, Héctor Suárez, John C. Jackson, John P. McGeehin   +4 more
doaj   +1 more source