Results 1 to 10 of about 3,358,836 (338)

Determination of the Absorption and Scattering Coefficients of Pigments: Application to the Identification of the Components of Pigment Mixtures

Applied Spectroscopy, 2009
In most scattering media, the scattering centers have random shapes and sizes, preventing any theoretical approach for the determination of their absorption and scattering coefficients. Three different experimental protocols are here selected and briefly described.
Latour, Gael, Elias, Mady, Frigerio, Jean-Marc   +2 more
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IDENTIFICATION OF MALIGNANT POTENTIALITIES OF MELANOCYTIC (PIGMENTED) NEVUS

Journal of the American Medical Association, 1956
• An attempt is made to state the clinical features by which the physician can decide whether a common pigmented mole, appropriately designated as a melanocytic nevus, should be removed. At the junction or interface between epidermis and dermis lie the melanocytes whose multiplication and extrusion into the dermis is called junctional activity ...
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Short Methods for the Identification of Pigments

American Antiquity, 1975
Semi-micro methods have been devised for the identification of the metallic components comprising the pigments used in mesoamerican mural paintings. These methods are based upon samples of 10-15 mgfor each of the colors to be studied and include the reds, greens, blues, blacks and browns. The analyses are performed on individual samples for each color,
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Identification and Inheritance of Pigments in Wild Rice

Crop Science, 1981
The identity and inheritance of anthocyanin pigments in the leaf sheath and staminate florets are not known in wild rice (Zizania aquatica L.). The objectives of this research were to identify the anthocyanins in wild rice and to initiate a study on the inheritance of these pigments.
L. H. Gutek, D. L. Woods, K. W. Clark
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Identification of organic pigments by solution spectrophotometry

Color Research & Application, 1982
AbstractOrganic pigments can be extracted readily into organic solvents from paints, plastics, inks, and other colored samples. If visible (in some cases near‐infrared) wave‐length spectrophotometric data are obtained from the resulting solutions using a log‐absorbance presentation, the pigments can be identified by matching curve shapes to those in a ...
Fred W. Billmeyer, Max Saltzman, Romesh Kumar   +2 more
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Algorithms for Pigment Identification

2000
In the study of pigments in art works, we want to identify which pigments were mixed by the artists. The technique used is the Raman spectroscopy. We designed a specific database and we developed some algorithms for processing and understanding the original ...
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Pigment analysis in the identification of "Flavobacteria".

Health laboratory science, 1977
Spectral properties of the intracellular pigments of flavpbacteroa were studied by "scanning" ultrasonic preparations, methanol extracts, MF preparations, slide cultures and whole cell suspensions. No genus-specific Amax were demonstrated with methanol extracts.
J R, Cohen, R C, Fuller, W, Litsky
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Pigment identification by analytical imaging using multispectral images

2009 16th IEEE International Conference on Image Processing (ICIP), 2009
This study utilized multispectral images to analyze pigments on a painting. This was accomplished by capturing multispectral images using a high-resolution image scanning system equipped with a monochromatic line CCD. The images were used to reconstruct spectral reflectance by solving a linear transfer function model representing camera response and ...
Jay Arre Toque, Yuji Sakatoku, Ari Ide-Ektessabi   +2 more
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Raman microscopy of Greek icons: identification of unusual pigments

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2003
Five Greek icons, made between the 15th and 18th centuries and now belonging to the Victoria and Albert Museum collections, were analysed by energy-dispersive X-ray fluorescence (EDXRF), optical microscopy and Raman microscopy in order to determine the stratigraphy of the artworks and the identity of the pigments used.
Lucia, Burgio, Robin J H, Clark, Krini, Theodoraki   +2 more
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[29] Identification of carotenoid pigments in birds

1992
Publisher Summary This chapter discusses the identification of carotenoid pigments in birds. One extraordinary feature of avian carotenoids is their packaging. Feathers are unique to birds and form the interface between a remarkable metabolic machine and an unforgiving environment. The colors and patterns of their display are exceedingly important in
Jocelyn Hudon, Alan H. Brush
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