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Topic: Pigment

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	The Online POV-Ray Tutorial: Pigment Reference
		The pigment is generated by basically setting the center of each unit cube in the space to the color at one end of the color map, and points on the edge of the cube to the color at the other end.
		Note that adjusting the phase of a gradient pattern is the same as translating the pigment and adjusting the phase of a radial pigment is the same as rotating the pigment around the y-axis.
		The spotted pigment is identical to the bozo pigment, except it doesn't respond to turbulence.
	library.thinkquest.org /3285/language/pigment.html (4317 words)

	Pigment - Wikipedia, the free encyclopedia
		A pigment is a material that changes the color of light it reflects as the result of selective color absorption.
		A distinction is usually made between a pigment, which is insoluble in the vehicle, and a dye, which is either a liquid, or is soluble.
		For example, a pigment that is used to color glass must have very high heat stability in order to survive the manufacturing process; but, suspended in the glass vehicle, its resistance to alkali or acidic materials is not an issue.
	en.wikipedia.org /wiki/Pigment (1863 words)

	Pigment as General
		Pigments are generally distinguished from dyes as colouring materials on the basis of their solubility characteristics.
		Pigments are used mainly in the colouration of paints, printing inks and plastics, although they are used to a certain extent in a much wider range of applications including textiles, ceramics, paper, and cosmetics.
		Pigments are thus required to resist dissolving in solvents, which they may contact in application to minimize problems such as 'bleeding' and migration.
	www.monokem.com /pigasgen.htm (828 words)

	Highbeam Encyclopedia - Search Results for pigment (Site not responding. Last check: 2007-09-23)
		In paint, the pigment is a powdered substance which, when mixed in the liquid vehicle, imparts color to a painted surface.
		The pigment report: pigment manufacturers are facing numerous challenges, including tighter margins, higher raw material and operating costs, overcapacity and offshore competition.
		The Pigment Report: 2002 was essentially a flat year for pigment companies, but global politics, raw material supply and cost uncertainties, increasing competition and pricing pressures are among the concerns facing manufacturers in 2003.
	www.encyclopedia.com /articles/10193.html (689 words)

	China Pigment & Dye, Pigment & Dye Catalog, China Pigment & Dye Manufacturers
		Pigment for Paint RED Pigment red 3, pigment red 21, pigment red 48: 1etc.
		Pearl pigment is a kind of inorganic pigment that can express beautiful luster and elegant color possessed by pearl, shell, butterfly, swimming fish and metal in the nature.
		Hangzhou Pigment Chemicals Co., Ltd. Is a leading manufacturer of Organic Pigment in china.
	www.made-in-china.com /Chemicals-Catalog/Pigment-Dye.html (531 words)

	Photosynthetic pigment - Wikipedia, the free encyclopedia
		A photosynthetic pigment is a pigment that is present in chloroplasts or photosynthetic bacteria and captures the light energy necessary for photosynthesis.
		The reason that there are so many pigments is that each absorbs light more efficiently in a different part of the spectrum.
		However, none of the pigments absorbs well in the green-yellow region, which is responsible for the abundant green we see in nature.
	en.wikipedia.org /wiki/Photosynthetic_pigment (325 words)

	AllRefer.com - pigment (Organic Chemistry) - Encyclopedia
		The pigments used in paints are nearly all metallic compounds, but organic compounds are also used (see lake).
		The brilliant and beautiful coloring of the rock and soil in some parts of the United States, especially in the Grand Canyon of the Colorado River, the Painted Desert of Arizona, and Bryce and Zion canyons of Utah, is largely produced by such compounds, chiefly oxides.
		White lead, or basic lead carbonate, is a pigment long in use; it is rendered more durable by mixture with zinc oxide.
	reference.allrefer.com /encyclopedia/P/pigment.html (350 words)

	Pigment
		A pigment, in biology, is a material that colours a plant or animal cell through the selective absorption of light.
		Pigments, however, do not iridesce; they are the same when viewed from any angle.
		In plants, most pigments are the critical component of photosynthesis.
	www.iscid.org /encyclopedia/Pigment (178 words)

	Guerra Paint and Pigment\| Suppliers of Artists Pigments, Binders and Materials \| FAQ
		Almost all of the pigments in this class are identified by the predominant type of metal present in pigment, though certain names, such as cerulean have come to indicate a specific metal mixture, in this case cobalt and tin.
		These pigments are fugitive to some degree, but advances in the later 20th century pigment technology have allowed these pigments to be produced synthetically, in a much broader range and with a greater quality than their predecessors.
		Pigment is added past the saturation point when a special effect, such as bronzing (a certain kind of iridescence), or an increased opacity or matte-ness is desired without the dulling of color obtained by adding white or filler.
	www.guerrapaint.com /faq.html (3494 words)

	Photosynthetic Pigments
		In plants, algae, and cyanobacteria, pigments are the means by which the energy of sunlight is captured for photosynthesis.
		However, since each pigment reacts with only a narrow range of the spectrum, there is usually a need to produce several kinds of pigments, each of a different color, to capture more of the sun's energy.
		Phycobilins are water-soluble pigments, and are therefore found in the cytoplasm, or in the stroma of the chloroplast.
	www.ucmp.berkeley.edu /glossary/gloss3/pigments.html (610 words)

	Early pigments
		In cave paintings, the pigments (often carbon fl or ochre) stick to the wall partially because the pigment gets trapped in the porous wall, and partially because the binding media (the spit or fat) dries, adhering the pigment to the wall.
		The pigment was made into a paste with various binders, including water, vegetable juices, urine, animal fat, bone marrow, blood and albumen.
		Iron oxide pigments, unaffected by alkalies, remain the basic palette of fresco painters, from the Minoans to the present.
	webexhibits.org /pigments/intro/early.html (1115 words)

	Pigment - Kids Learn about Art
		Pigment is the part of the paint that is the colour.
		The first pigments used were ground from earth and vegetable matter or minerals.
		He was aware that the organic pigments he used would inevitably fade so he built up layers and layers of the most extreme colours in an effort to combat this fading.
	www.theartgallery.com.au /kidsart/learn/pigment (226 words)

	Pigment Cell Research
		Pigment Cell Research publishes manuscripts on all aspects of pigment cells including development, cell and molecular biology, genetics and melanoma.
		Members of the pigment cell research community are invited to send in suggestions for colour images to be used as cover art for Pigment Cell Research.
		The images should be visually exciting and should be relevant to any aspect of pigment cell biology including for example, pigmentation phenotypes or patterns, images from cell or developmental biology or related to melanoma.
	www.pigment.org /authors.asp (3068 words)

	Discovery: Experiments Confirm Novel Eye Pigment Controls Circadian Rhythm
		Discovered in 1877, pigments known as opsins, which are linked to vitamin A and located in the retina, enable mammals to see by absorbing light and transferring visual signals through the optic nerve to the brain.
		However, because pigments for vision and circadian clocks occur in different parts of the retina, some blind people who have lost the part of the retina containing opsins still retain the cryptochrome region and maintain normal circadian rhythm.
		It may be that SAD patients have a defective gene that doesn't produce the pigment properly or simply suffer from a vitamin B-2 deficiency.
	www.eurekalert.org /pub_releases/1998-11/UoNC-DECN-191198.php (815 words)

	Acne Pigment
		Pigment (melanin) is produced in the skin (in melanocyte cells) as a natural result of skin injury.
		Pigment is brown to dark brown in color.
		Pigment spots are a direct result of acne infections and therefore reducing or eliminating acne will reduce or eliminate the problems with pigment spots.
	www.skintactix.com /acne_pigment.htm (557 words)

	Titanium dioxide pigment & metal
		About one tonne of chlorine is required to produce 5 to 6 tonnes of titanium dioxide pigment (depending on the iron content of the rutile used consuming the chlorine as ferric chloride and with about one-third of chlorine ending up as hydrogen chloride).
		The Australian market for titanium dioxide pigment is estimated to be about 40 000 tonnes per year valued at $80 million supplied by the local manufacturers for all but 1 000 tonnes of imported pigment.
		In the Goldfields, a sulfate-derived pigment could be viable in this region where sulfuric acid is available on competitive terms and with fewer environmental issues to preclude the dumping of iron sulfate waste.
	www.chemlink.com.au /titanium.htm (3135 words)

	Chemicon - Product #MAB1059 - Anti-Pigment Epithelium Derived Factor, clone 10F12.2 [PEDF]
		Pigment epithelium-derived factor is a niche signal for neural stem cell renewal.
		Expression of pigment epithelium-derived factor decreases liver metastasis and correlates with favorable prognosis for patients with ductal pancreatic adenocarcinoma.
		Pigment epithelium-derived factor delays the death of photoreceptors in mouse models of inherited retinal degenerations.
	www.chemicon.com /Product/ProductInfoLib.asp?ProductItem=MAB1059 (557 words)

	DHARMA PIGMENT
		Dharma Pigment Dye is a concentrated, non-toxic pigment system that when applied to fabrics, looks and feels like dye.
		Pigment Dyes are not recommended for solid color dying, as they do not set until they are dry, which means that the color will migrate while drying.
		Pigment Dyes are a viable alternative to using Procion, at a comparable cost, when doing projects with small children and/or when you prefer not to work with the chemicals.
	www.dharmatrading.com /html/eng/1930-AA.shtml (1637 words)

	Etherington & Roberts. Dictionary--pigment (Site not responding. Last check: 2007-09-23)
		A natural or synthetic, organic or inorganic substance that imparts color, as well as fl and white, and is used in the manufacture of paint, printing inks, etc. A pigment is insoluble in its liquid medium, and imparts its coloring effect simply by spreading over the surface to which it is applied.
		A pigment produced by precipitating a dye on a colorless, or inert, base, thus rendering the dye insoluble, is called a
		Pigments are generally classified according to their origin.
	palimpsest.stanford.edu /don/dt/dt2575.html (206 words)

	Skin Pigment Disorders
		Skin color is determined by pigment (melanin) in the skin and the colors of the upper layers of skin.
		Skin pigment is yellow, dark brown, or fl in color.
		This rare, inherited disorder is characterized by a total lack of melanin in the skin.
	www.umm.edu /dermatology-info/pigment.htm (313 words)

	Yellow Lab pigment - Woodhaven Labradors
		Usually pigment does darken as a young pup ages and if the nose is purplish at say 5 - 6 weeks it will most likely turn fl by 8 weeks but not always.
		Breeding a poorly pigmented yellow back to a fl may not correct the pigment in the resulting puppies.
		A true Dudley (pink pigment) can and generally do have the tendancy to sunburn, so you do need to be careful of them in the sunlight.
	www.woodhavenlabs.com /yellow-pigment.html (1232 words)

	Dorlands Medical Dictionary
		a pigment inhaled or ingested and deposited in the lungs and other tissues.
		any of the pigments derived from hemoglobin, such as hematoidin, hematoporphyrin, hemofuscin, hemosiderin, and methemoglobin.
		a pigment formed by the malarial parasite from the pigment of the blood and deposited largely in the spleen and liver.
	www.mercksource.com /pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_p_21zPzhtm (3569 words)

	Read Dr. Melissa Stoppler's article on causes of vitiligo on MedicineNet.com
		Melanin is the pigment that gives the skin its characteristic color.
		Vitiligo is caused by a loss of pigment in the skin, due to destruction of pigment-forming cells known as melanocytes.
		It is rare for pigment to return once the white patches have developed.
	www.medicinenet.com /script/main/art.asp?articlekey=47420 (545 words)

	Understanding Lead Pigment Litigation - Litigation History
		Since 1987, companies that long ago manufactured lead pigment used in paint (or their alleged successors-in-interest) have been the targets of scores of lawsuits.
		The lawsuits do not address the real issue, which is the limited number of landlords who have ignored their legal responsibility to maintain their properties and address any lead paint hazards that may develop.
		Recently, in Rhode Island, a jury found that the cumulative presence of lead pigment in paints and coatings on buildings throughout Rhode Island constitutes a public nuisance and that Millennium Holdings, NL Industries and Sherwin-Williams caused or subtantially contributed to the creation of the public nuisance and should be ordered to abate the public nuisance.
	www.leadlawsuits.com /index.php?s=pageB (714 words)

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