Fibrous homogeneity

Plastic Flooring. Plastic flooring is marketed either as tile or sheet flooring. Tile is suppHed as pieces usually 30.5 x 30.5 cm with a thickness of 0.16—0.32 cm and is usually homogeneous ia compositioa. Sheet flooring, oa the other hand, is produced ia roU form 1.8, 2.7, 3.7 and 4.6 m wide (2- and 4-m ia Europe), and generally consists of a plastic upper component on a fibrous backiag. 

Fibrous Composites. These composites consist of fibers in a matrix. The fibers may be short or discontinuous and randomly arranged continuous filaments arranged parallel to each other in the form of woven rovings (coUections of bundles of continuous filaments) or braided (8). In the case of chopped strand mat the random arrangement is planar. In whisker (needle-shaped crystals or filaments of carbon and ceramics) reinforced materials the arrangement is usually three-dimensional and the resulting composites are macroscopically homogeneous. 

Cork, a natural material - the bark of the Mediterranean cork oak tree. It is largely air cells and the fibrous cell walls have a high resin content. When baked, the resin softens and welds the pieces of bark into a comparatively homogeneous mass, which is sliced into blocks, commonly 50, 75 and 100 mm thick. 

In designing fibrous-reinforced plastics it is necessary to take into account the combined actions of the fiber and the plastic. At times the combination can be considered homogeneous, but in most cases homogeneity cannot be assumed. 

This experiment describes the preparation of a mitochondrial fraction from beef heart muscle. Heart muscle is an excellent choice of tissue because isolated mitochondria are stable and most enzyme activities remain high for a long period of time. Since heart muscle is more fibrous than other tissues, some problems are encountered in homogenizing the tissue. The preparation described here is suitable for the study of characteristic enzymatic activity, electron transport, and ADP phosphorylation. 

Following are the definitions of the above terms Common banded is the common variety of bituminous and subbituminous coals it consists of a sequence of irregularly alternating layers of lenses of a homogeneous blk material having a brilliant vitreous luster a grayish-blk less brilliant striated material usually of silky luster and thin bands or lenses of soft powder and fibrous particles, known as (usain or mineral charcoal. The difference in luster of the bands is greater... 

With the purpose of increase in a specific surface and electroconductivity of GPSi the technology of gas-phase pyrolitic sedimentation of a layer carbon fibrous nanomaterial on a surface of macropores is developed [8]. Process of sedimentation carbon fibrous nanomaterial at catalytic decomposition of the ethanol steam proceeds strictly selectively, and the received material practically does not contain some soot. The nano-fibrous layer of carbon is homogeneously enough located on all surface of macropores (Fig. 8), thickness of a layer makes about 0,1-0,4 microns and depends basically on modes of sedimentation. The layer represents a mix nano-... 

The quest for imitations of ivory have led to the use of vegetable ivory, the hard white nuts produced by various tropical trees. The most common of these are the doum palm (Hyphanae thebaica) and the tagua Phytelephas macro-carpa). These nuts have a brown fibrous rind, but the meat inside is homogeneous white or yellowish white. Softer than ivory, these nuts are easy to carve, and are popular for making small items such as netsuke, buttons, beads, and jewelry. 

Figure 8-40 Relationship Between Particle Size and System Properties. D = particle deposition in fibrous fillers, F = adhesion force, H = homogeneity of a particle, Sv = surface area per unit volume, W = particle weight, Vg = terminal setting rate, as = particle fracture resistance. Source From H. Schubert, Food Particle Technology. Part 1 Properties of Particles and Particulate Food Systems, J. Food Eng., Vol. 6, pp. 1-32, 1987, Elsevier Applied Science Publishers, Ltd.

In a simple model for this case, which, as in the 3-D case, ignores fiber straightening and anisotropy of the fibrous network, a plane stress version of Eqn. (35) can be developed. As such, it can only be used for plane stress states. Consider the x-y plane to be that in which the fibers are woven or the whiskers are lying. The strain rates in this plane are taken to be homogeneous throughout the composite material and crzz, axz and ayz are taken to be zero. The resulting law is... 

We are so used to food that has a fibrous texture that when it is homogeneous fibres have to be added. An example is Quorn , a mycoprotein produced from Fusarium, a mycelial fungus. The threads or hyphae are about 5 pm in diameter and very thin-walled. So they hardly register as giving texture. Since they can be given a variety of flavours, it makes sense to complete the illusion with texture. One way is to align the hyphae in a shear field, add some egg albumen and fix the structure with heat. Although this does not produce a hierarchical structure, and so is more similar to chicken or fish than mammalian muscle, it is nonetheless very acceptable. 

Felt Homogeneous fibrous stmcture made by interlocking fibers via application of heat, moisture, and pressure. 

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