Results 281 to 290 of about 188,939 (311)
Neobonellin, a new biologically active pigment fromBonellia viridis [PDF]
Experientia, 1978 A difference of possible physiological significance is reported in the chemical nature of the green integumentary pigment of the echiuroidBonellia viridis, the proboscis of which contains the known bonellin (1, R=H) as the major constituent, while the body skin is mainly pigmented by an isoleucine conjugate, neobonellin, formulated tentatively as2 (R=H)
Laura Zanetti +3 more
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Perylene pigment wastewater treatment by fenton-enhanced biological process
Environmental Research, 2020Polycyclic aromatic hydrocarbons (PAHs) are regarded as priority pollutants owing to their toxic, mutagenic and carcinogenic characteristics. Perylene is a kind of 5-ring PAH with biological toxicity, and classified as a class III carcinogen by the World Health Organization (WHO). Nowadays, some of its derivatives are often used as industrial pigments.
Jing-Long Han +10 more
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Theoretical model for pigmentation pattern formation in biological systems
2009 Chinese Control and Decision Conference, 2009In this paper, a new theoretical model for understanding the forming mechanism of pigmentation patterns has been proposed. It is found that a non-linearly coupled Turing system can exhibit complex patterns with more than one wavelength. Depending on the control parameters, three kinds of complex pigmentation including super-stripe, super-hexagon, and ...
Wang Xin, Li Xia, Li Kun
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The role of basecoat pigmentation on the biological resistance of an automotive clearcoat
Journal of Coatings Technology and Research, 2010This work aims to study the effect of various natural and artificial biological compounds on an automotive acrylic/melamine clearcoat applied over silver and black basecoats containing pigments. The visual performance of the coating system was evaluated at different aging conditions.
Bahram Ramezanzadeh +2 more
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Biological monitoring of occupational exposure in the chromate pigment production industry
Science of The Total Environment, 1988A survey of occupational exposure to hexavalent chromium in chromate pigment production was undertaken in factories producing lead chromate (PbCrO4) and strontium chromate (SrCrO4). Sampling pre and post-shift in a factory where SrCrO4 production had just started showed the optimum strategy for biological monitoring is the measurement of urinary ...
N.J. Smith +3 more
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Biological and remote sensing perspectives of pigmentation in coral reef organisms [PDF]
, 2002 Coral reef communities face unprecedented pressures on local, regional and global scales as a consequence of climate change and anthropogenic disturbance. Optical remote sensing, from satellites or aircraft, is possibly the only means of measuring the effects of such stresses at appropriately large spatial scales (many thousands of square kilometres ...
Hedley JD, Mumby PJ
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Evaluating the use of algal pigments to assess the biological condition of streams
Environmental Monitoring and Assessment, 2013Assessments of stream condition using benthic algal communities have traditionally relied on taxonomy-based approaches to compare community structure at sites exposed to a stressor versus reference sites. Taxonomy-based methods are often effective, but they require high levels of training and are relatively time consuming and expensive. We examined the
Kathryn E. Thomas +2 more
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Biological Aspects of Pigment Cell Research
1966An important requisite in the struggle for life of many animals is camouflage. This capacity enables them to hide from predatory enemies or to spy upon their prey unobserved. Numerous invertebrates and nearly all poikilotherm vertebrates have developed this faculty into a fascinating art. These animals are able to adapt the colour of their skin rapidly
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Photoelectric and Magneto-Orientation Effects in Pigmented Biological Membranes
Journal of Colloid and Interface Science, 1977Abstract Photoelectric and magneto-orientation effects in pigmented biological membranes are analyzed and discussed with special reference to three different levels of order in the membrane structures. The kinetic results of photoelectric responses from an artificial pigmented bilayer lipid membrane/aqueous redox system, measured by a tunable voltage
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Distribution of lipochrome pigment in the prostate gland: Biological and diagnostic implications
Human Pathology, 1995Lipochrome pigment is characteristically found in Wolffian duct-derived structures including seminal vesicles and ejaculatory ducts. The presence of lipochrome pigment is helpful in identifying atypical histological patterns of seminal vesicle or ejaculatory duct that mimic prostatic adenocarcinoma.
John R Srigley, Chung Shan Leung
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