Results 71 to 80 of about 128,012 (217)

Simultaneous Effect of Temperature and Irradiance on Growth and Okadaic Acid Production from the Marine Dinoflagellate Prorocentrum belizeanum [PDF]

open access: yes, 2014
Benthic marine dioflagellate microalgae belonging to the genus Prorocentrum are a major source of okadaic acid (OA), OA analogues and polyketides. However, dinoflagellates produce these valuable toxins and bioactives in tiny quantities, and they grow ...
Belarbi, El Hassan   +6 more
core   +3 more sources

Scientific investigation by technical photography, OM, ESEM, XRF, XRD and FTIR of an ancient Egyptian polychrome wooden coffin

open access: yesConservar Património, 2017
The focus of this study is to use a multi-analytical approach to map and identify the pigments used on a polychrome wooden coffin (Late Period), as well as to provide a deeper understanding of the painting techniques and the condition of the object ...
Ahmed Abdrabou   +2 more
doaj   +1 more source

Toward identification of larval sailfish (Istiophorus platypterus), white marlin (Tetrapturus albidus), and blue marlin (Makaira nigricans) in the western North Atlantic Ocean* [PDF]

open access: yes, 2005
The identification of larval istiophorid billfishes from the western North Atlantic Ocean has long been problematic. In the present study, a molecular technique was used to positively identify 27 larval white marlin (Tetrapturus albidus), 96 larval blue ...
Cowen, Robert K.   +3 more
core   +1 more source

Pelodictyon phaeoclathratifovme sp. nov., a new brown-colored member of the Chlorobiaceae forming net-like colonies [PDF]

open access: yes, 1989
A new strain of the green sulfur bacteria was isolated from the monimolimnion of Buchensee (near Radolfzell, Lake Constance region, FRG). Single cells were rod-shaped, nonmotile and contained gas vacuoles. Typical net-like colonies were formed by ternary
Overmann, Jörg, Pfennig, Norbert
core   +1 more source

Interpretation of Absorption Bands in Airborne Hyperspectral Radiance Data

open access: yesSensors, 2009
It is demonstrated that hyperspectral imagery can be used, without atmospheric correction, to determine the presence of accessory phytoplankton pigments in coastal waters using derivative techniques.
W. David Miller   +3 more
doaj   +1 more source

Identification of Major Pigments Containing D-Amino Acid Units in Commercial Monascus Pigments.

open access: yesChemical and Pharmaceutical Bulletin, 1997
Eight major pigments have been isolated from commercial Monascus pigments. The structural data on the pigments were obtained using NMR, MS, and semisyntheses. The pigments were characterized as alanine or aspartate derivatives of the orange pigments of Monascus, monascorubrin (1) and rubropunctatin (2), which have an azaphilone structure.
Kyoko SATO   +5 more
openaire   +2 more sources

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  

Advanced optical imaging methods for investigating manuscripts [PDF]

open access: yes, 2011
This paper gives an overview of advanced optical imaging methods relevant to the study of manuscripts. While some of the methods covered are well established, others are very much in active development.
Liang, H
core  

Fourier Transform Infrared (FTIR) Database of Historical Pigments: A Comparison Between ATR-FTIR and DRIFT Modalities

open access: yesApplied Sciences
The existence of historical pigments databases is important to speed up cultural heritage research. Knowledge of their chemical composition and their manufacture contributes to the study of art history and helps develop accurate conservation-restoration ...
Daniel Jiménez-Desmond   +1 more
doaj   +1 more source

PRISMS: remote high resolution in situ multispectral imaging of wall paintings [PDF]

open access: yes, 2008
The non-invasive monitoring and examination of wall paintings in grotto sites, tombs and buildings is particularly important since these paintings are often extremely vulnerable. Traditionally, inspection of wall paintings at high resolution (i.e.
Keita, K, Liang, H, Vajzovic, T
core  

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