Results 281 to 290 of about 3,358,836 (338)
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Identification of Photoreceptor Pigments
2010Rhodopsin, flavins, pterins and carotenoids are pigments that have been identified as participating in the photoreception and photomovement of eukaryotic algae [Lenci, 1975, 1995; Haupt and Hader, 1994; Kreimer, 1994; Lebert, 2001; Siebert, 2003]. Rhodopsin represents a protein (opsin), lipid and chromophore (retinal) complex.
Yuriy I. Posudin +2 more
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Identification of Yersinia pestis Pigment Receptor
2006In the present work the PR of Y. pestis was identified as a complex of a 17 kDa protein associated with two oppositely charged low molecular weight components that cooperatively form a pigment binding domain of PR. The pigment binding activity of PR is dependent on an appropriate proportion of the low molecular weight components and on the absence of ...
Olga N, Podladchikova +1 more
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Identification of titanium pigment in drug addicts' tissues
Histopathology, 1991Autopsy on two drug addicts who had been injecting themselves intravenously with crushed Algafan tablets (active principle, propoxyphene hydrochloride) showed crystals consistent with talc in their lungs and other organs. A fine granular material that appeared black by transmitted light was also present.
J C, Coelho Filho +4 more
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Identification of the pigment in amniotic fluid of erythroblastosis as bilirubin
The Journal of Pediatrics, 1966The yellow pigment found in amniotic fluid obtained from pregnancies with fetusesaffected with erythroblastosis behaves in exactly the same manner as does bilirubin on spectrophotometric scanning and diazotization after chloroform extraction and when developed by reverse phase kieselguhr column chromatography.
J V, Brazie, F A, Ibbott, W A, Bowes
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The isolation and identification of indigoid pigments from urine
Clinica Chimica Acta, 1988A purple pigment, phyriaviolin, and a blue pigment, phyriaazulin, have been found in relatively large amounts in the urine of patients suffering from two diverse pathological conditions, porphyria cutanea tarda and Crohn's disease. The two pigments have been characterised by chemical, spectroscopic, and chromatographic studies and identified to be ...
A H, Jackson +4 more
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A rapid pigmentation test for identification ofCryptococcus neoformans
Antonie van Leeuwenhoek, 1978A rapid pigmentation test for identification of Cryptococcus neoformans is described. The method is based on the formation of a characteristic, mouse-grey to violaceous-black pigment when shake cultures of C. neoformans in a phosphate-buffered, l-DOPA - ferric citrate medium are incubated at 37 C for one hour.
D K, Paliwal, H S, Randhawa
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, 2019
Fungus producing red pigment was identified as Talaromyces purpureogenus CFRM02. Agriculture by-product, bengal gram husk (BegH) was used as substrate for fermentation. Red pigment characteristics were confirmed by CIELAB and UV–vis spectrum.
S. G. Pandit +3 more
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Fungus producing red pigment was identified as Talaromyces purpureogenus CFRM02. Agriculture by-product, bengal gram husk (BegH) was used as substrate for fermentation. Red pigment characteristics were confirmed by CIELAB and UV–vis spectrum.
S. G. Pandit +3 more
semanticscholar +1 more source
Identification and Spectroscopic Characterization of Photoreceptor Pigments
1980From the previous chapters it should be quite clear by now that living organisms interact with the external world via specialized molecules that are able to undergo certain physico-chemical modifications in response to environmental stimuli, thus initiating the process of signalling to the organism that something outside is now different.
Giuliano Colombetti, Francesco Lenci
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Spectrophotometric Identification of Feather Pigments in the Brown Leghorn Fowl
Nature, 1964BROWN Leghorn fowl show a strong sexual dimorphism in the plumage pigmentation, the female colouring being developed only in presence of the ovary whereas the male shades characterize intact or castrate bird alike. All feather tracts differ in some respects between the sexes ; the present discussion centres on the pectoral (breast) region which is ...
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On the Use of Isotope Mass Spectrometry in the Identification of Artists' Pigments
Studies in Conservation, 1970AbstractThe principles of isotope mass spectrometry are described as a means of identifying sources of artists’ materials. Four elements are considered: lead, sulfur, carbon and oxygen. For the first two of these, preliminary results show promise in dating samples of lead white and discerning between artificial ultramarine and natural ultramarine from ...
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