Fibrous materials/matter

Dyes, often also called coloring matters or colorants, are intensely colored, soluble organic substances used to impart color to fibrous materials (see Textbox 66). Not all colored and soluble organic substances, however, are dyes only those whose molecules have a considerable structural complexity are useful for imparting color to other materials. Moreover, a substance is considered a dye only if the color it imparts is fairly permanent, that is, resistant to fading and disappearance. 

Fluorine Miscellaneous materials, 4304 Magnesium perchlorate Cellulose, etc., 4078 /V-Meth yI morpholine oxide, 1991 Nitric acid Cellulose, 4430 Perchloric acid Cellulose and derivatives, 3992 Perchloric acid Hydrofluoric acid, Structural materials, 3992 Potassium chlorate Cellulose, 4011 Potassium nitrate Cellulose, 4645 Sodium chlorate Paper, etc., or Wood, 4033 Sodium nitrate Fibrous material, 4716 Sodium nitrite Wood, 4715 Sodium peroxide Fibrous materials, 4797 Zinc permanganate Cellulose, 4705 BLEACHING POWDER Wood perchlorates Organic matter See SUGARS... 

Extensive research has been published on the chemistry and physics of paper and textiles. From the volume of available work, physical scientists must extract the information required by conservators to assist them in the preservation of fibrous materials. To this end, the Cellulose, Paper, and Textile Division of the American Chemical Society has sponsored four symposia since the mid-1970s on the preservation of paper and textiles of historic and artistic value. These conferences provided a forum where conservators and physical scientists could meet and discuss matters of mutual interest Papers presented at the first three meetings have been published as chapters in three volumes of the Advances in Chemistry Series ... 

Sodium nitrate Fibrous material. 4721 Sodium peroxide Fibrous materials. 4803 Zinc permanganate Cellulose. 4710 BLEACHING POWDER Wood PERCHLORATES Organic matter... 

The use of the terms, peat and muck, vary markedly from region to region and, obviously, there can be no clearly-defined line of demarcation between them. Suffice it to say that peats tend to be rather coarse, fibrous, materials mucks tend to be fine-grained, more colloidal, more decomposed, and behave more like inorganic soils because of particle size and higher percentage of mineral matter, particularly clays. 

TTie fibrin that constitutes the fibrous material of the clot is formed from its precursor fibrinogen, a protein occurring in normal plasma at a level of about 0 3%. It is remarkable that a soluble protein present in such low concentration is nevertheless able, in a matter of a few minutes, to become transformed into a finely ramified insoluble meshwork which causes a local conversion of the blood into a smooth firm jelly. The conversion of fibrinogen into insoluble fibrin, in fact, provides a good model of fibre formation in the body. 

Building mud, a composite material, is easily prepared by mixing clay or clayey soil with fibrous matter, such as straw or dung of herbivorous animals, and sufficient water to obtain a plastic, pliable mass. In ancient Egypt, for example, mud was made by mixing clayey soil with sand, chopped straw, and sufficient water so as to make the mixture pliable and suitable either for use as mortar or stucco or for making bricks. 

Figure 14.4 Different types of glial cells. Astrocytes connect capillaries and neurones. Fibrous astrocytes, with less branching and more filamentous processes, occur mainly in white matter while protoplasmic astrocytes are located principally in the grey matter. Oligodendrocytes form the myelin sheath by wrapping themselves around axons. The connection between the myelin sheath and the oligodendrocyte is permanent and provides material for the myelin sheath. Microgliocytes (microglia) are the phagocytes of the nervous system. The ciliated ependymal cells line the cavities of the central nervous system.

Ireco Chemicals Explosive Slurry Containing Pulpy Fibrous Matter, Finely Divided Carbonaceous Material and Powerful Inorganic Oxidizer Salt... 

Organic Matter. Mixtures with fibrous or absorbent organic materials (charcoal, flour, shellac, sawdust, and sugar) are hazardous and can be caused to explode by static friction or shock.6... 

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