Fishnets

This is a very useful approach, and what follows is not meant to replace it so much as to offer a different viewpoint. In the present scheme, there are two very broad categories of structure—"fishnet" and "lattice", which can. in fact, be achieved by a variety of mechanisms. Thus, the viewpoint offered below is strongly tied to the end structure of the gel. 2uid only indirectly to chemical properties which produce them. The various structures are defined in the text, but use is also made of simple drawings. It is hoped that others will adopt the wider use of simple pictorial diagrams for the description of gel structures. 

Fishnet Gels. By emalogy with typical covalent gels, reversible gel structures are frequently discussed in terms of "crosslinks"... 

Figure 2. Structural classification scheme for polymer gels and related systems. Key F = fishnet L = lattice T = transient E = entai led C = coll R = rod G = globular.

Cotton is really a very versatile fiber in that it takes color easily, absorbs moisture readily, and is durable in a wide variety of environments. Cotton yam finds use in all kinds of clothing, often mixed with synthetic fibers. In fact, according to one estimate almost half of all textiles worldwide are made of cotton (Thompson, 1994). Besides apparel, cotton fiber is used in coffee filters, fishnets, lace, upholstery, etc. It is biodegradable and can be used as a sorbent in oil spills. 

A fishnet plot of the electrostatic rigidity constant a for perovskite structures as a function of the charge Z on the body-centered ion and the charge Q on the edge-centered ion the cube-corner ion would have charge 6 - Z. Three compounds being discussed here are indicated, as well as the simple cubic and body-centered cubic structure, which can also be described this way. 

Baltic Sea derived by kriging of centered-point-data acquired via fishnet (cell size lOkmx 10 km,... 

Chondroitin sulfate chains have been likened to a large fishnet, passing small molecules through their matrix but excluding... 

Bakkevig and Nielsen [35] repeated the protocol above, but used low and high work rates with three kinds of underwear (a polypropylene lxl knit, a wool lxl knit, and a fishnet polypropylene) worn under wool fleece covered by polyester/cotton outer garments. Total sweat production and evaporated sweat were the same for all three underwear fabrics, but where the sweat accumulated differed significantly. More sweat accumulated in the wool underwear than either polypropylene at both work rates. At the higher work rate, more sweat moved into the fleece layer from both kinds of polypropylene underwear than for the wool. Most likely for the lxl knits, the thicker wool underwear(1.95 mm) simply holds more water than the polypropylene underwear (1.41 mm) and based on outer layer-to layer wieking results, needs a greater volume of sweat to fill it pores before it starts to donate the excess to the layer above it. 

North Sea fishermen are often burned when polymerized mustard sticks to their fishnets. It is unnoticed or mistaken for bilge until the blisters appear eight hours later. The source is from the German U-boats that were filled with CWM and sunk after the war. 

In Japan, diy-spim filaments are produced with considerably improved mechanical properties (1993 Production 36,000 t/a, capacity 80,000 t/a). Poly(vinyl alcohol) filaments have high breaking strengths (Table 33) and 90 % of them are therefore used for industrial purposes (fishnets, cmiveyor belts, etc.), as well as more recently as short-fibered additives in productimi of paper and textile composites [81]. ... 

Fig. 13.19 Fishnets, (a) Picking np a line-caught fish, (h) Fishing in Nigeria, (c) A record anchovy catch in the Enghsh Channel, (a) From www.indepthangler.com.au. (b) From AGRIBUSINESS NIGERIA (c) Erom SWNS.

The question of the structure of reversible gels and the mechanism for their formation is not trivial, since it cannot be generalized. Russo [2] has proposed a general classification of fishnet gels for flexible... 

Net net [ME nett, ff. OE, akin to OHGr nezzi net] (before 12c) n. An open fabric made by knotting the intersections of thread, cord, or wires to form meshes. Net can be made by hand or machine in a variety of mesh sizes and weights matched to varying end uses, i.e., veils, curtains, fishnets, and heavy cargo nets. 

Figure 1-1. A fishnet plot of a synchronous two-dimensional infrared (2D IR) correlation spectrum of atactic polystyrene in the CH-slretching vibration region at room temperature.

There are many different ways to plot a 2D IR correlation spectrum. A pseudo-three-dimensional representation (so-called fishnet plot) as shown in Figure 1-1 is well suited for providing the overall features of a 2D IR spectrum. Usually, however, 2D IR spectra are more conveniently displayed as contour maps to indicate clearly the location and intensity of peaks on a given spectral plane. In the following section, basic properties of and information extracted from 2D IR spectra are reviewed by using schematic contour maps (Figures 1-10 and 1-11). 

Fig. 7 Various AFM images of different nanopatterns, including fishnet (ST3-4), striped velvet (ST3-LT4) and basket weave LT7-8-9 patterns. Reprinted with permission from [147]. Copyright (2004) AAAS...

Free 4.5 nm DND particles demonstrate very interesting properties. While drying the aqueous suspension on smooth surfaces, the particles reveal the tendency to self-organize and form fanciful thread-like and fishnet-like structures. According to the results of self-consistent calculations based on density functional theory (DFT), the reason for these phenomena is in presence of the electric fields caused by fhe nonuniformity of distribution of the electronic density across the opposite facets of free particles of DND due to their small size. ... 

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