Results 81 to 90 of about 4,938 (215)

A new multi-spectral imaging system for examining paintings [PDF]

open access: yes, 2005
A new multispectral system developed at the National Gallery is presented. The system is capable of measuring the spectral reflectance per pixel of a painting.
Cupitt, J, Liang, H, Saunders, D
core  

Pairwise thermal entanglement in Ising-XYZ diamond chain structure in an external magnetic field

open access: yes, 2014
Quantum entanglement is one of the most fascinating types of correlation that can be shared only among quantum systems. The Heisenberg chain is one of the simplest quantum chains which exhibits a reach entanglement feature, due to the Heisenberg ...
Ananikyan, N. S.   +4 more
core   +1 more source

Deep‐qGFP: A Generalist Deep Learning Assisted Pipeline for Accurate Quantification of Green Fluorescent Protein Labeled Biological Samples in Microreactors

open access: yesSmall Methods, Volume 8, Issue 3, March 20, 2024.
Unlocking precision in biological sample quantification, Deep‐qGFP, an innovative deep learning‐aided paradigm, redefines GFP‐labeled microreactor analysis. Its real‐time, automated detection and classification capabilities shatter conventional method limitations.
Yuanyuan Wei   +9 more
wiley   +1 more source

Universal properties of highly frustrated quantum magnets in strong magnetic fields [PDF]

open access: yes, 2007
The purpose of the present paper is two-fold. On the one hand, we review some recent studies on the low-temperature strong-field thermodynamic properties of frustrated quantum spin antiferromagnets which admit the so-called localized-magnon eigenstates ...
A. Honecker   +10 more
core   +2 more sources

An overview of Principal Components Analysis approaches in Raman studies of cultural heritage materials

open access: yesJournal of Raman Spectroscopy, Volume 55, Issue 2, Page 125-147, February 2024.
The present overview answers the need of evaluating the current state of the art concerning the application of principal components analysis (PCA) to Raman spectroscopy studies of cultural heritage materials. Painting materials, both colouring and binding ones, were considered, together with natural and synthetic glasses, biogenic and mineral ...
Alessia Coccato, Maria Cristina Caggiani
wiley   +1 more source

Sign-problem-free Monte Carlo simulation of certain frustrated quantum magnets [PDF]

open access: yes, 2016
We introduce a Quantum Monte Carlo (QMC) method which efficiently simulates in a sign-problem-free way a broad class of frustrated $S=1/2$ models with competing antiferromagnetic interactions.
Alet, Fabien   +2 more
core   +5 more sources

Common Medieval Pigments [PDF]

open access: yes, 2004
This paper discusses the pigments used in medieval manuscripts. Specific types of pigments that are examined are earths, minerals, manufactured, and organics.
Baker, A
core   +1 more source

Colour cluster analysis for pigment identification

open access: yes, 2008
This paper presents image processing algorithms designed to analyse the colour CIE Lab histogram of high resolution images of paintings. Three algorithms are illustrated which attempt to identify colour clusters, cluster shapes due to shading and finally
Goodall, Simon, Martinez, Kirk
core   +1 more source

Petrographical study of gilding and paints on white stone XYII ANE (Moscow Cremlin)

open access: yesRUDN Journal of Engineering Research, 2010
The character of gilding and paint composion of tsarevna Maria Ioannovna tombstone slab was studied. The morphology and the chemical composition of gilding testified with using gold powder. The composition of gilding Au, Hg, Ag, Mo, Ni, Cu.
R V Lobzova   +3 more
doaj  

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