Results 81 to 90 of about 128,012 (217)

Blue light regenerates functional visual pigments in mammals through a retinyl-phospholipid intermediate. [PDF]

open access: yes, 2017
The light absorbing chromophore in opsin visual pigments is the protonated Schiff base of 11-cis-retinaldehyde (11cRAL). Absorption of a photon isomerizes 11cRAL to all-trans-retinaldehyde (atRAL), briefly activating the pigment before it dissociates ...
Fain, Gordon L   +6 more
core   +1 more source

Ameliorating Effect of Chloride on Nitrite Toxicity to Freshwater Invertebrates with Different Physiology: a Comparative Study Between Amphipods and Planarians [PDF]

open access: yes, 2008
High nitrite concentrations in freshwater ecosystems may cause toxicity to aquatic animals. These living organisms can take nitrite up from water through their chloride cells, subsequently suffering oxidation of their respiratory pigments (hemoglobin ...
Alonso, A., Camargo, J.A.
core   +2 more sources

Identification of Functional Groups and Types of Anthocyanin Pigments of Purple Sweet Potato cv. Antin 2 and cv. Antin 3 [PDF]

open access: yesBIO Web of Conferences
Purple sweet potatoes (Ipomoea batatas L. Lam.) contain anthocyanin pigments which act as natural antioxidants which are very beneficial for health. The research aimed to identify the functional groups and types of anthocyanin pigments in purple sweet ...
Farida Siti   +4 more
doaj   +1 more source

Production and purification of fumonisins from a highly toxigenic Fusarium verticilloides strain [PDF]

open access: yes, 2005
Fumonisins are the major mycotoxins produced by Fusarium verticilloides and F. proliferatum fungi which are widely found as contaminants in corn and corn screenings.
Bailly, Jean Denis   +3 more
core  

Adaptive superpixel segmentation and pigment identification of colored relics based on visible spectral images

open access: yesHeritage Science
This work explores the extraction of the spatial distribution and chemical composition information of pigments in colored relics through visible spectral images.
Shiwei Liu   +4 more
doaj   +1 more source

Microspectrofluorimetry and chemometrics for the identification of medieval lake pigments

open access: yesHeritage Science, 2018
Microspectrofluorimetry offers high sensitivity, selectivity, fast data acquisition, good spatial resolution (down to 2 μm), and the possibility of in-depth profiling.
Paula Nabais   +5 more
doaj   +1 more source

Extraction and optimisation of red pigment production as secondary metabolites from Talaromyces verruculosus and its potential use in textile industries

open access: yesMycology, 2017
Textile dyes and effluents are considered as one of the worst polluters of our priceless water sources and soils. New sources of natural pigments are getting particular research interests due to the toxicity produced by synthetic colouring agents.
Zannatul Chadni   +4 more
doaj   +1 more source

Hair histology as a tool for forensic identification of some domestic animal species

open access: yes, 2018
Animal hair examination at a criminal scene may provide valuable information in forensic investigations. However, local reference databases for animal hair identification are rare.
Ahmed, Yasser A.   +2 more
core   +1 more source

Biopigment Tracing of Mangrove Rhizophora mucronate Leaf an Bark Waste and Its Application for Batik Dyeing by Multiple Fixations [PDF]

open access: yes, 2017
The purpose of this research is to determine the pigments in the bark and leaves of mangrove (Rhizophora mucronata), to analyze rate of color fastness in batik, level of consumer interest, and most effective pricing for the resulting batik products.
Azizah TN, Ria   +4 more
core  

Hamiltonian tomography of dissipative systems under limited access: A biomimetic case study [PDF]

open access: yes, 2011
The identification of parameters in the Hamiltonian that describes complex many-body quantum systems is generally a very hard task. Recent attention has focused on such problems of Hamiltonian tomography for networks constructed with two-level systems ...
Burgarth, Daniel   +4 more
core   +1 more source

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