Ribbon-shaped structures

An alternative proposal might be that bile salts elongate in ribbonlike structures with increased counterion concentration. These micelles would be very asymmetric. However, in all previous studies where the shape of the bile salt micelles has been studied (11) it appeared to be almost spherical. This tends to rule out an elongated ribbon-like structure. 

Kim et al. studied the effect of bacterial cellulose on the transparency of PLA/bacterial nanocomposites, since bacterial cellulose had shown good potential as reinforcement or preparing optically transparent materials due to its structure, which consists of ribbon-shaped fibrils with diameters in the range from 10 to 50 nm. They found that light transmission of the PLA/bacterial cellulose nanocomposite was quite high due to the size effect of... 

Structure of the program. The primary relationships of the lattice cell method, (4.62)—(4.66), are related to the matrix rearrangements and to the solutions of the matrix equations. All these standard operations are included in the software of modern computers. Application of the transformation matrix [A] and the matrix of rigidities of the primitive system [ ]p (the first is sparse, consisting of zeros and units the second is a narrow ribbon-shaped matrix) would consume intolerable amounts of computer resources, memory in particular. For this reason, the primitive variables and the system parameters were not transformed in the form of the matrix equations (4.62) and (4.63) but by a software application. 

The basic structural unit (BSU) of carbon fibers has been described by Fourdeaux et al [77] as a two-dimensional ribbon shaped graphitic layer (Figure 5.25) with no correlation between the directions of the layer borders and direction of the x-axis fibers. The ribbons are about 6 nm wide with a length of several hundred nm. Some of these ribbons run parallel to... 

If the gun structure shown in Fig. 6.16 is two dimensional, then it produces a ribbon-shaped electron beam. A ribbon-shaped beam is used for a TWT of a two-dimensional structure. 

BC is characterized by an ultrafine network structure composed of ribbon-shaped fibrils with an average diameter 100 times thinner than those of plant cellulose fibers (Figure 2.9) [4]. As a result, BC membranes are a highly porous material with substantial permeability for liquids and gases and high water uptake (water content >90%) [8]. 

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