Relevant bibliographies by topics / Pigment analyses

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Pigment analyses'

Author: Grafiati
Published: 4 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Pigment analyses"

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Thomas, Daniel B., Cushla M. McGoverin, Kevin J. McGraw, Helen F. James, and Odile Madden. "Vibrational spectroscopic analyses of unique yellow feather pigments (spheniscins) in penguins." Journal of The Royal Society Interface 10, no. 83 (2013): 20121065. http://dx.doi.org/10.1098/rsif.2012.1065.

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Many animals extract, synthesize and refine chemicals for colour display, where a range of compounds and structures can produce a diverse colour palette. Feather colours, for example, span the visible spectrum and mostly result from pigments in five chemical classes (carotenoids, melanins, porphyrins, psittacofulvins and metal oxides). However, the pigment that generates the yellow colour of penguin feathers appears to represent a sixth, poorly characterized class of feather pigments. This pigment class, here termed ‘spheniscin’, is displayed by half of the living penguin genera; the larger an
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van de Streek, Jacco, Jürgen Brüning, Svetlana N. Ivashevskaya, et al. "Structures of six industrial benzimidazolone pigments from laboratory powder diffraction data." Acta Crystallographica Section B Structural Science 65, no. 2 (2009): 200–211. http://dx.doi.org/10.1107/s0108768108041529.

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The crystal structures of six industrially produced benzimidazolone pigments [Pigment Orange 36 (β phase), Pigment Orange 62, Pigment Yellow 151, Pigment Yellow 154 (α phase), Pigment Yellow 181 (β phase) and Pigment Yellow 194] were determined from laboratory X-ray powder diffraction data by means of real-space methods using the programs DASH and MRIA, respectively. Subsequent Rietveld refinements were carried out with TOPAS. The crystal phases correspond to those produced industrially. Additionally, the crystal structures of the non-commercial compound `BIRZIL' (a chloro derivative of Pigmen
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Cuddington, K., and P. R. Leavitt. "An individual-based model of pigment flux in lakes: implications for organic biogeochemistry and paleoecology." Canadian Journal of Fisheries and Aquatic Sciences 56, no. 10 (1999): 1964–77. http://dx.doi.org/10.1139/f99-108.

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Vertical fluxes of pigments are used in limnology to monitor phytoplankton abundance, herbivore grazing, ecosystem efficiency, and historical changes in production. However, significant pigment degradation can occur during algal sedimentation. We used an individual-based model of pigment flux to quantify the relative importance of production and degradation as controls of pigment sedimentation. Pigment deposition increased with production, sinking rate, and phytoplankton depth and declined as lake depth and the depth of oxygen penetration increased. Unexpectedly, pigment sedimentation rate was
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Rodríguez de Sensale, G., S. Chinchón-Payá, V. De Lima, A. Aguado, and Ignacio Segura. "Ultramarine blue pigment degradation in cementitious materials: a new approach to the phenomenon." Materiales de Construcción 74, no. 353 (2024): e332. http://dx.doi.org/10.3989/mc.2024.357623.

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The paper analyses the degradation process of commercial ultramarine blue pigments in cementitious materials. For this purpose, two commercial pigments (with and without a protective coating) in different solutions and cement pastes are studied incrementally. The results show that pigment degradation occurs due to an ion exchange phenomenon; during hydration high ion contents are released, calcium and potassium being the most aggressive for the pigment. Calcium distorts the unit cell; between the sodium of the pigment and the potassium in the medium a cation exchange phenomenon takes place. Bo
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Kawamura, Shoji, Nathan S. Blow, and Shozo Yokoyama. "Genetic Analyses of Visual Pigments of the Pigeon (Columba livia)." Genetics 153, no. 4 (1999): 1839–50. http://dx.doi.org/10.1093/genetics/153.4.1839.

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AbstractWe isolated five classes of retinal opsin genes rh1Cl, rh2Cl, sws1Cl, sws2Cl, and lwsCl from the pigeon; these encode RH1Cl, RH2Cl, SWS1Cl, SWS2Cl, and LWSCl opsins, respectively. Upon binding to 11-cis-retinal, these opsins regenerate the corresponding photosensitive molecules, visual pigments. The absorbance spectra of visual pigments have a broad bell shape with the peak, being called λmax. Previously, the SWS1Cl opsin cDNA was isolated from the pigeon retinal RNA, expressed in cultured COS1 cells, reconstituted with 11-cis-retinal, and the λmax of the resulting SWS1Cl pigment was s
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Mun, Seong Woo, Sun Myung Lee, Jongseo Park, Young Seok Kang, and Ji Sun Kim. "A Study on Painting Characteristics by Analysis of Pigments Used in Unhangak Hall Dancheong in Hwaryeongjeon Shrine, Suwon." Journal of Conservation Science 38, no. 5 (2022): 430–43. http://dx.doi.org/10.12654/jcs.2022.38.5.07.

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A microscopy investigation has been performed together with non-destructive component analysis to verify properties of pigments used in Unhangak Hall Dancheong in Hwaryeongjeon Shrine, Suwon. In addition, X-ray diffraction analysis, polarization microscopy, and scanning electron microscopy analyses were performed on the pigment specimens collected at the site. Dividing the Unhangak interior into areas and performing pigment property analyses has confirmed that the pigments Jusa, Jangdan, and Sukganju (iron oxide, red ocher) have been used for red colors. Jahwang, Gold, and Gamboge (organic pig
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Priyadharshini, S., A. Zibia Kasturi Gratia, Savariroyan Stephen Rajkumar Inbanathan, S. Ragavarshini, Hassan Fouad, and Mohamed H. Mahmoud. "Isolation and Characterization of a Novel Crystalline Pigment as a Natural Colorant." Science of Advanced Materials 16, no. 3 (2024): 336–43. http://dx.doi.org/10.1166/sam.2024.4653.

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This research focuses on the isolation and thorough characterization of a distinctive pigment-producing bacterial strain, ACFM05, obtained from Daucus carota subsp. Sativus (Carrots). The pigment was systematically examined for morphological, microscopic, biochemical, and molecular features, utilizing 16S rRNA sequencing. The strain was identified as a novel species within the Micrococcus genus, specifically classified as Micrococcus yunnanensis. The optimization of pigment extraction parameters revealed a pH of 8 at 40 °C as the ideal conditions for maximum yield. UV studies indicated that th
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Bendsoe, N., C. Hansson, and O. Sterner. "Inflammatory reactions from organic pigments in red tattoos." Acta Dermato-Venereologica 71, no. 1 (1991): 70–73. http://dx.doi.org/10.2340/00015555717073.

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Two different red pigments used for tattooing were found to give rise to inflammatory reactions in the skin. No inorganic component was found in the pigments. NMR and MS analyses elucidated the molecular structures of two different organic compounds. A bright red pigment was found to be an aromatic azo-derivative, and a red-violet pigment was found to be linear quinacridone. A strong exposure to UV-light was reported in most cases prior to the onset of the inflammation.
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Všianský, Dalibor. "Plaster Pigments in Traditional Folk Architecture - A Case Study from Moravia (Czech Republic)." Advanced Materials Research 1000 (August 2014): 289–93. http://dx.doi.org/10.4028/www.scientific.net/amr.1000.289.

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The results of analyses of coloured plasters are given in the paper. The samples come from traditional folk earth houses from SE and Central Moravia and were chosen so as all of the most common colours of the Central European folk architecture are present among them: red, yellow, blue, green, and black. The analyses were conducted by the means of light microscopy, which is also a powerful tool for stratigraphical analyses, X-ray diffractometry, Raman spectrometry, end electron microanalysis. Hematite of industrial origin was identified as the red pigment, the yellow one was formed by yellow ea
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Yoo, Seon-Young, Buddakoralelage Janani Namal Seneviratne, and Gyu-Ho Kim. "A Characteristic Analysis on Clay Pigments of Mural Paintings in Sri Lanka." Journal of Conservation Science 38, no. 4 (2022): 327–33. http://dx.doi.org/10.12654/jcs.2022.38.4.07.

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Sri Lanka has four types of mural painting styles; Classic, Late Classic, Kandyan, and Southern styles, but there is little research on scientific analysis for mural paintings. In this study, we analyze white, yellow, and red clay pigments which were collected from ancient producing sites. Analyzing pigment samples shows that samples are containing aluminum oxide(Al<sub>2</sub>O<sub>3</sub>) and silicon dioxide(SiO<sub>2</sub>) which are connected to the soil. And a degree of iron oxidation determines yellow or red colors. To understand the characteristics o
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Dissertations / Theses on the topic "Pigment analyses"

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Immerstrand, Charlotte. "Biophysical studies of pigment transport in frog melanophores : impedance measurements and advanced microscopy analyses /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/med803s.pdf.

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Bickelmann, Constanze. "Visual pigment evolution and the paleobiology of early mammals." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2011. http://dx.doi.org/10.18452/16354.

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Auf der Basis von Fossilien wird angenommen, dass die ersten Säugetiere nachtaktiv waren. Diese Arbeit untersucht diese Hypothese mit bioinformatischen und molekularbiologischen Techniken. Der Fokus liegt auf dem Rhodopsin, ein Sehpigment im Wirbeltierauge, das für Sehen unter schlechten Lichtverhältnissen verantwortlich ist. Zunächst wurde das Rhodopsin der monotrematen Echidna, einem basalen Säugetier, sequenziert und mit zwei Mutanten mit Mutationen an Positionen 158 und 169 in vitro exprimiert. Die biochemische und funktionelle Charakterisierung ergab, dass das Echidna-Rhodopsin farbpigmen
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Graham, Mark Douglas. "Omnivory and selective feeding by zooplankton along a lake production gradient, complementary ¹§5N isotope and gut pigment analyses." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0027/MQ30475.pdf.

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Neveu, Arlette. "Le Champignon Pulcherricium caeruleum (Aphyllophorales) : étude de son pigment et d'un métabolite phénolique original." Bordeaux 2, 1995. http://www.theses.fr/1995BOR2B003.

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Pulcherricium caeruleum est un champignon lignicole de la famille des Corticiacées caractérisé par un carpophore résupiné bleu profond. Son pigment a étudié à partir de cultures en laboratoire sur un milieu gélosé à base de glucose et d'extrait de levure. La pigmentogenèse a été étudiée en fonction des éléments nutritifs du milieu et de son éclairement. L'instabilité de ce pigment dans certains solvants a été mise en évidence : elle a été attribuée à des phénomènes d'oxydo-réduction. L'interprétation de ses données spectroscopiques semble indiquer que le pigment de P. Caeruleum, de formule bru
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Engel, Eva. "Tattoo pigments in skin : determination and quantitative extraction of red tattoo pigments." kostenfrei, 2007. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/850/.

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Ebadati, Nasrollah D. "Characterization of the Pigment-Protein Complex in Corynebacterium Poinsettiae." Thesis, North Texas State University, 1986. https://digital.library.unt.edu/ark:/67531/metadc798269/.

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The purpose of this study was to completely characterize the protein moiety in the caroteno complex in C. poinsettae, determine if the distribution and level of protein in the pigment-protein complex in membranes of the wild type and in a colorless mutant could account for the differences in the stability of the membrane, and to determine if this protein is common to other pigmented and non-pigmented organisms. Also, electron microscopy of cell membranes of C. poinsettiae which had been exposed to gold-labelled antibody against the protein moitey of the pigment-protein complex, demonstrating t
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Boyce, Geraldine. "Electron crystallography of organic pigments." Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340747.

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Maurial, Sandrine. "Une alchimie lumineuse : pigment et pixel comme atomes de la couleur." Bordeaux 3, 2005. http://www.theses.fr/2005BOR30044.

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Cette réflexion artistique et philosophique approche le phénomène couleur par une voie transversale, en tissant des liens entre les pigments du peintre " traditionnel " et les pixels de l'artiste " informaticien ". Cette relation met en scène l'interaction entre matière et lumière, les deux composantes constitutives de la couleur. La couleur est ainsi explorée depuis ses plus petits constituants tout en dégageant sa dimension mystérieuse, sa résonance sociale et culturelle. Du côté de l'histoire de l'art, le traitement de la couleur par les artistes dépend des recherches scientifiques, de l'es
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Cerevatova, Kristina. "Studium částic různých kosmetických pigmentů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-433150.

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The main focus areas of this master thesis include the writing of a literature review, which contains an overview and segregation of pigments which are used in the preparation of cosmetic products. The thesis is focused on the properties and characterization of pigments for use in cosmetology. The following focus is on legislation, more specifically on pigments that the cosmetic industry allows, limits and does not allow. The main part of this thesis is an overview of methods for the characterization of pigments. The practical part deals with the characterization of particles of selected cosme
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Rogers, David. "CIS-REGULATORY ANALYSIS OF THE PIGMENT CELL DIFFERENTIATION GENE POLYKETIDE SYNTHASE." Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2701.

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The analysis of Gene Regulatory Networks (GRNs) is essential to understanding the complete process of embryo development. Elucidating every gene regulatory circuit from maternal regulatory inputs all the way to the activation of differentiation gene batteries is an important step in increasing our understanding of developmental biology. In this work I study the cis-regulatory architecture of a pigment cell differentiation gene, polyketide synthase (SpPks) in the sea urchin Strongylocentrotus purpuratus. SpPks encodes an enzyme that is responsible for the biosynthesis of the sea urchin pigment
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Books on the topic "Pigment analyses"

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Nicholas, Eastaugh, and State University College at Buffalo. Dept. of Art Conservation, eds. The pigment compendium: Optical microscopy of historical pigments. Elsevier Butterworth Heinemann, 2004.

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Cheryl, Porter, Townsend Joyce, Institute of Archaeology, and institute of Paper Conservation, eds. Pigment analysis and identification. Institute of Paper Conservation, 1995.

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Wyplosz, Nicolas. Laser desorption mass spectometric studies of artists' organic pigments. Universiteit van Amsterdam, 2003.

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Christensen, Mads Chr. Identifikation og fremstilling af pigmenter: Metodebeskrivelse. Det Kongelige Danske kunstakademi, Konservatorskolen, Kunstlinien, 1987.

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Isacco, Enrico. Les pigments des miniatures indiennes: Étude sur leur usage par une méthode photographique. L'Asiathèque, 2008.

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T, Peters A., and Freeman H. S, eds. Analytical chemistry of synthetic colorants. Blackie Academic & Professional, 1995.

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1939-, Wrolstad Ronald E., ed. Handbook of food analytical chemistry: Pigments, colorants, flavors, texture, and bioactive food components. Wiley-Interscience, 2005.

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Lutzenberger, Karin. Künstlerfarben im Wandel: Synthetische organische Pigmente des 20. Jahrhunderts und Möglichkeiten ihrer zerstörungsarmen, analytischen Identifizierung. Herbert Utz Verlag, 2009.

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Letswaart, Th. Estimating phytoplankton biomass by means of microscopical counts and HLPC pigment analysis: A comparison. Association of River Waterworks, RIWA, 2000.

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Weyer, Karl Aloys. Isolierung und Sequenzierung der Proteinuntereinheiten des photosynthetischen Reaktionszentrums von Rhodopseudomonas viridis: Entdeckung und Strukturaufklärung des Lipoprotein-Membranankers der Cytochrom-Untereinheit. Intemann, 1987.

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Book chapters on the topic "Pigment analyses"

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Nielsen, S. Suzanne. "Pigment Analysis." In Instructor’s Manual for Food Analysis: Second Edition. Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5439-4_19.

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Popelka-Filcoff, Rachel Sarah. "Pigment Analysis in Archaeology." In Encyclopedia of Global Archaeology. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30018-0_2281.

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Popelka-Filcoff, Rachel Sarah. "Pigment Analysis in Archaeology." In Encyclopedia of Global Archaeology. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-51726-1_2281-2.

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Popelka-Filcoff, Rachel S. "Pigment Analysis in Archaeology." In Encyclopedia of Global Archaeology. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4419-0465-2_2281.

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Sadeghi, Maryam, Paul Wighton, Tim K. Lee, David McLean, Harvey Lui, and M. Stella Atkins. "Pigment Network Detection and Analysis." In Series in BioEngineering. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39608-3_1.

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Viera, Isabel, and María Roca. "Analytical Protocols in Chlorophyll Analysis." In Pigments from Microalgae Handbook. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50971-2_6.

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Pérez-Gálvez, Antonio, and Javier Fontecha. "Analytical Protocols in Carotenoid Analysis." In Pigments from Microalgae Handbook. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50971-2_7.

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Nikolic, Milan R., Simeon Minic, Mirjana Macvanin, Dragana Stanic-Vucinic, and Tanja Cirkovic Velickovic. "Analytical Protocols in Phycobiliproteins Analysis." In Pigments from Microalgae Handbook. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-50971-2_8.

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McHendry, P., AJ Craven, and LJ Murphy. "TEM studies of organic pigments." In Electron Microscopy and Analysis 1997. CRC Press, 2022. http://dx.doi.org/10.1201/9781003063056-172.

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Dufossé, Laurent, Fabio Gosetti, Daria Maria Monti, Antonello Merlino, and Sameer A. S. Mapari. "Mass Spectrometry of Food Pigments." In Mass Spectrometry in Food Analysis. CRC Press, 2022. http://dx.doi.org/10.1201/9781003091226-10.

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Conference papers on the topic "Pigment analyses"

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Fancy, Saiada Fuadi, Md Ahsan Sabbir, Kingsley Lau, and Dale DeFord. "Extended Connectivity of Zinc Pigments to Provide Enhanced Galvanic Coupling by Partial Replacement with Nano-particles." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13470.

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Abstract Zinc rich primer coatings (ZRP) have become widely used since the 1980's for corrosion mitigation. The effectiveness of the ZRP coating strongly depends on the pigment volume concentration and bonding to the steel substrate. Beneficial cathodic polarization occurs when the dispersed zinc pigments have continuity with the steel substrate. Carbon nano-particles are being considered in the development of the ZRP coating systems considering its physical, electrical and mechanical properties. Therefore this is of interest to identify the extent of possible corrosion mitigation of a nano-pa
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Dömény, Jakub, Richard Slávik, and Jan Baar. "DIFFUSION ANALYSIS OF PROTECTIVE PIGMENT OIL COATINGS." In World Conference on Timber Engineering 2025. World Conference On Timber Engineering 2025, 2025. https://doi.org/10.52202/080513-0711.

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Fancy, Saiada Fuadi, Md Ahsan Sabbir, Kingsley Lau, and Dale DeFord. "Influence of Nano-particles on Water Intrusion of a Nanoparticle Enriched Zinc-Rich Coating by EIS Analysis." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-15147.

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Abstract Zinc-Rich Primer (ZRP) based coating systems are widely used to protect steel infrastructure from aggressive exposure environments. These coating systems provide corrosion protection of the steel substrate by both barrier and sacrificial mechanism. Electrical continuity between the zinc pigments and steel substrate is the fundamental parameter in order to achieve galvanic protection and the use of high pigment volume concentration may not necessarily ensure effective electrical continuity. Moreover, high zinc content also degrades the bond of the coating matrix to the steel substrate.
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Zhao, Xinyu. "Image Recognition of Pigmented Skin Diseases Based on Deep Learning." In International Conference on Data Analysis and Machine Learning. SCITEPRESS - Science and Technology Publications, 2024. https://doi.org/10.5220/0013512900004619.

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Bierwagen, Gordon P., Dante Battocchi, Mark Hatzenbeller, Larry Fitzgerald, and Scott Porter. "Analysis of (Zn+Mg) Pigment Mixtures in Metal –Rich Corrosion Protective Primers for Steel." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01640.

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Abstract There is evidence that mixing/alloying Mg with Zn in a galvanizing layer greatly increases (up to 40%) the corrosion protective life time of such a galvanizing layer.1 By analogy, one would expect that one could possibly improve standard Zn-rich paints by adding Mg particles to a Zn rich primer2 to increase the overall protective life time of the system. We have done this in “some initial proof-of-concept experiments, and indeed the primer coatings that contain Mg particles added with Zn particles to form an improved metal rich coating for steel did indeed give longer corrosion protec
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Spence, J. W., T. J. Lemmons, Y. Hou, R. J. Schadt, R. E. Fornes, and R. D. Gilbert. "The Effects of Acid Deposition on Paints: a Chamber Study." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91154.

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Abstract Exterior latex and alkyd architectural coatings were exposed in a laboratory system to different conditions involving simulated sunlight, dew, and photochemical smog containing SO2. A simulated sunlight exposure of the coatings in the presence of clean air was also incorporated into the experimental design. Changes in surface features after 1370 hours of exposure were characterized by Scanning Electron Microscopy and Energy Dispersive Analysis of X-rays. Color change measurements of the exposed films were recorded as Delta E values. Of the coatings investigated, those formulated with
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Frydrych, D. J., R. G. Hart, and H. E. Townsend. "Effect of Corona Discharge Treatment on the Electrochemical Behavior of Zinc-Filled Organic Coatings on Steel Sheet." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85385.

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Abstract Zinc-rich organic coatings have been widely utilized on steel for corrosion protection. A disadvantage of these coatings is an inability to provide a significant level of cathodic protection to areas of the steel base exposed at sites of damage to the coating. Our studies led to the discovery that subjecting these coatings to an electrical corona discharge treatment significantly increases galvanic activity. In this study we vary the pigment volume concentration (PVC) of the zinc in coatings and measure the electrochemical behavior of the coatings with and without corona discharge tre
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Dudek, Marcin, Stian Isaksen, Tonje Davidsen, Anders Skilbred, and Benedicte Riise Sørensen. "Weathering Performance of Topcoats: Do Colours Matter?" In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00135.

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Abstract Corrosion protective organic coating systems often consists of several layers comprising a variety of different coating products. The coating mostly responsible for improving and maintaining the visual aspects of the entire coating system is called a topcoat. Its durability is usually described with gloss and colour retention values, which characterize the change of both gloss and colour after certain exposure time. This paper presents weathering data of broadly categorized polyurethane and polysiloxane topcoats, and discuss their weathering performance with particular focus on the co
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Vilche, J. R., E. C. Bucharsky, S. G. Real, and A. R. Di Sarli. "Influence of Binders Used in the Formulation of Zinc Rich Paints (ZRP) on the Performance of the Final Coatings on Naval Steel in Sea Water." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95293.

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Abstract Electrochemical impedance measurements and optical analysis have been made in artificial sea water on alkyd, epoxy-polyamide or ethyl-silicate zinc rich painted naval steel. Information concerning both the binder and the pigment volume concentration effects on the corrosion resistance of such systems was obtained from changes of the open circuit potential and impedance data at increasing exposure times as well as SEM observations. Characteristic metal/coating system parameters were determined according to a transmission line model, which describes the painted metal/solution interface.
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Neitz, Jay, Maureen Neitz, and Gerald H. Jacobs. "More than three cone types in normal color vision?" In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.fm6.

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Normal human color vision is usually thought to be based on only three spectrally different cone types. However, two facts suggest the possibility that some color-normal males could have more than three cone pigment types: (1) Most people with normal color vision have more than two photopigment genes on each X-chromosome and (2) there appear to be genetically specified variations in spectral positions of the normal middle-wavelength-sensitive (MWS) and long-wavelength-sensitive (LWS) pigments. For example, a male might have one gene encoding an LWS pigment and two genes encoding slightly diffe
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Reports on the topic "Pigment analyses"

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Dave, Foram, Mahmood Ali, Mozaffar Mokhtari, Richard Sherlock, Alistair Mcllhagger, and David Tormey. Effect of pigments on laser beam transmission in diode laser transmission welding of poly(propylene). Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.pc.4.

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Welding technologies are state of the art for joining polymer composites, with one of the two joining parts considered laser transmissive (LT) and the other laser absorptive (LA). Pigments are often added to LT to enhance the crystallinity of the polymer matrix. However, pigments lead to internal scattering of the laser beam and the rate of transmission or the laser energy density decreases. Depending upon the type and amount of pigments added in the formulation of LT, the percentage of the laser beam transmitted, absorbed, or scattered differs. Laser welding performance depends on the laser e
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Corriveau, Elizabeth, Travis Thornell, Mine Ucak-Astarlioglu, et al. Characterization of pigmented microbial isolates for use in material applications. Engineer Research and Development Center (U.S.), 2023. http://dx.doi.org/10.21079/11681/46633.

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Organisms (i.e., plants and microorganisms) contain pigments that allow them to adapt and thrive under stressful conditions, such as elevated ultraviolet radiation. The pigments elicit characteristic spectral responses when measured by active and passive sensors. This research study focused on characterizing the spectral response of three organisms and how they compared to background spectral signatures of a complex environment. Specifically, spectra were collected from a fungus, a plant, and two pigmented bacteria, one of which is an extremophile bacterium. The samples were measured using Fou
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Bennett, Alan B., Arthur A. Schaffer, Ilan Levin, Marina Petreikov, and Adi Doron-Faigenboim. Manipulating fruit chloroplasts as a strategy to improve fruit quality. United States Department of Agriculture, 2013. http://dx.doi.org/10.32747/2013.7598148.bard.

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The Original Objectives were modified and two were eliminated to reflect the experimental results: Objective 1 - Identify additional genetic variability in SlGLK2 and IPin wild, traditional and heirloom tomato varieties Objective 2 - Determine carbon balance and horticultural characteristics of isogenic lines expressing functional and non-functional alleles of GLKsand IP Background: The goal of the research was to understand the unique aspects of chloroplasts and photosynthesis in green fruit and the consequences of increasing the chloroplast capacity of green fruit for ripe fruit sugars, yiel
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Patterson, Philip, and William Lum. Laser Scattering Particle Size Distribution Analyses of Pigments. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada353710.

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Hirschberg, Joseph, and Gloria A. Moore. Molecular Analysis of Carotenoid Biosynthesis in Plants: Characterizing the Genes Psy, Pds and CrtL-e. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568744.bard.

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In this research we have studied the molecular biology of carotenoid biosynthesis in tomato. The investigations focused on the genes Pds and Psy, encoding desaturase and phytoene synthase, respectively, which are key enzymes in the biosynthetic pathway of lycopene and b-carotene. In addition, we have investigated the genes for lycopene cyclase. We have cloned from tomato and characterized the cDNA of CrtL-e, which encodes the lycopene e-cyclase, and analyzed its expression during fruit development. The results establish a paradigm for the regulation of carotenoid pigment biosynthesis during th
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Shaw, John, Arieh Rosner, Thomas Pirone, Benjamin Raccah, and Yehezkiel Antignus. The Role of Specific Viral Genes and Gene Products in Potyviral Pathogenicity, Host Range and Aphid Transmission. United States Department of Agriculture, 1992. http://dx.doi.org/10.32747/1992.7561070.bard.

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In this research we have studied the molecular biology of carotenoid biosynthesis in tomato. The investigations focused on the genes Pds and Psy, encoding desaturase and phytoene synthase, respectively, which are key enzymes in the biosynthetic pathway of lycopene and b-carotene. In addition, we have investigated the genes for lycopene cyclase. We have cloned from tomato and characterized the cDNA of CrtL-e, which encodes the lycopene e-cyclase, and analyzed its expression during fruit development. The results establish a paradigm for the regulation of carotenoid pigment biosynthesis during th
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Chen, Chen, Peng Chen, Xia Liu, and Hua Li. Combined 5-Fluorouracil and Low Molecular Weight Heparin for the Prevention of Postoperative Proliferative Vitreoretinopathy in Patients with Retinal Detachment. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2021. http://dx.doi.org/10.37766/inplasy2021.8.0117.

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Review question / Objective: The aim of this meta-analysis is to evaluate the efficacy and safety of intraoperative infusion of combined 5-fluorouracil and low molecular weight heparin (LMWH) for the prevention of postoperative proliferative vitreoretinopathy in patients with retinal detachment. Condition being studied: Postoperative proliferative vitreoretinopathy (PVR) is the primary cause of failure of retinal reattachment surgery. 5-fluorouracil (5-FU) inhibits the proliferation of fibroblasts, and suppresses collagen contraction. On the other hand, heparin reduces fibrin exudation, and in
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Tabakovic, Momir, Stefan Savic, Andreas Türk, et al. Analysis of the Technological Innovation System for BIPV in Austria. Edited by Michiel Van Noord. International Energy Agency Photovoltaic Power Systems Programme, 2024. http://dx.doi.org/10.69766/aocp4683.

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This report analyses the Technological Innovation System (TIS) of Building Integrated Photovoltaics (BIPV) in Austria. The study’s scope is consistent with the IEA PVPS Task 15 report [1].The analysis aims to facilitate and support the innovation, development, and implementation of industrial solutions of BIPV technologies. In Austria, the use of BIPV is still a niche application and covers under 2% of all implemented PV systems [1]. BIPV technology in Austria has historically developed with the support of different public financial incentives, national and European. The history of BIPV is som
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Pell, Eva J., Sarah M. Assmann, Amnon Schwartz, and Hava Steinberger. Ozone Altered Stomatal/Guard Cell Function: Whole Plant and Single Cell Analysis. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7573082.bard.

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Original objectives (revisions from original proposal are highlighted) 1. Elucidate the direct effects O3 and H2O2 on guard cell function, utilizing assays of stomatal response in isolated epidermal peels and whole cell gas exchange. 2. Determine the mechanistic basis of O3 and H2O2 effects on the plasma membrane through application of the electrophysiological technique of patch clamping to isolated guard cells. 3. Determine the relative sensitivity of Israeli cultivars of economically important crops to O3 and determine whether differential leaf conductance responses to O3 can explain relativ
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WANG, MIN, Sheng Chen, Changqing Zhong, et al. Diagnosis using artificial intelligence based on the endocytoscopic observation of the gastrointestinal tumours: a systematic review and meta-analysis. InPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2023. http://dx.doi.org/10.37766/inplasy2023.2.0096.

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Review question / Objective: With the development of endoscopic techniques, several diagnostic endoscopy methods are available for the diagnosis of malignant lesions, including magnified pigmented endoscopy and narrow band imaging (NBI).The main goal of endoscopy is to achieve the real-time diagnostic evaluation of the tissue, allowing an accurate assessment comparable to histopathological diagnosis based on structural and cellular heterogeneity to significantly improve the diagnostic rate for cancerous tissues. Endocytoscopy (ECS) is based on ultrahigh magnification endoscopy and has been app
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