Fiber staining

Nylon blends, dyeing, 9 204 Nylon block copolymer, 19 762 Nylon carpet fibers, stain-resistant, 19 764 Nylon-clay nanocomposites, 11 313-314 Nylon extrusion, temperatures for, 19 789t Nylon feed yarns, spin-oriented, 19 752 Nylon fiber(s), 24 61 production of, 19 740 world production of, 19 7654 Nylon fiber surfaces, grafting of polymers on, 19 763-764... 

Fig. 3. (A) Stereo pair of starfish sperm chromatin fibers stained with osmium ammine-B. Bracket indicates the fine deposition of stain on nucleosomes and linker DNA. Arrowheads indicate where fibers enter and exit the plane of the section, and asterisks indicate sharp bends in the fibre axis. (B) Stereo pair of a reconstructed volume of a starfish sperm head by EM tomography. Axes of some fibers have been marked. Arrowhead indicates where individual fibers cannot be distinguished (from Ref. [27]). Scale bar 100 nm.

Figure 4 Longitudinal section of a skin collagen fiber, stained with Cuprolinic blue and uranyl acetate, showing densely packed, banded collagen fibrils with decorin DS chains attached periodically at D or E bands (arrowed). The scale bar represents 100 nm.

Similar isoelectric points for hair and wool fiber are to be expected because chemical compositions of the cuticle are similar and because both fibers show similar dye-staining characteristics. Cuticle from both fibers stains more readily with cationic dyes than with anionic dyes [96], whereas the cortex stains readily to anionic dyes [121]. 

FIGURE 5.5 High magnification TEM of the fiber cuticle surface as it appears in transverse section after bulk fiber staining with osmium tetroxide. The fiber cuticle surface membrane (FCSM) comprising lipids (fatty acids) and proteins is approximately 6 nm thick and is apposed to the a-layer (a) of exocuticle (exo). Bar equals 0.1 p,m. 

Extending this work to conventional woven composites, Young [101] showed that the fiber strain within the composite depended on the position of the fiber within the woven fabric and whether the fiber was a weft or a warp fiber. Fiber-to-fiber stain varied by up to 50% of the applied strain. 

Figure 1.5 Disturbed mitochondrial activity in patients over age 70. (a) "Moth-eaten" and "large central pallor" patterns in various muscle fibers stained for cytochrome-oxidase activity. At the lower right are two longitudinally cut muscle fibers showing a very elongated distribution of central pallor within those fibers these are an occasional finding in a chronic peripheral neuropathy patient. (b,c) Many normal-diameter muscle fibers (some indicated by asterisks)...

Ono, H. Moriyasu, T. Ohmori, Y Nishimura, T. Saiga, T. Improved method of elastic fiber staining for evaluation of vascular invasion by cancer cells. Igaku Kensa 1995,44,1410-1415 Chem. Abstr. 1995,123, 334055. 

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