Contorts

The general procedure for the preparation of vanadium borates consists in heating a concentrated H2O solution of boric acid and vanadium oxide in an autoclave at 170 °C for several days [143]. Two different vanadium borate clusters 105 and 106 are obtained, one with two polyborate chains coordinated to a contorted vanadium oxide ring (105) and another one with a macrocyclic Bi8036(0H)6 ring (106). The latter ring is composed of six B306(0H) units and has a chair-like conformation (Fig. 27) [143]. 

Turbulent flame-front regime. Eddy-like contortions of fhe flame preheaf and burned gases zones give rise to "ouf of fronf" islands and peninsula sfructures of intermediate progress variable values. Scalar transport becomes gradient-like. 

Z remained the center of attention. When he found the door locked, he again attempted to escape through the medicine cabinet. As he contorted his body into various alarming positions, H finally pulled him back from taking a header. 

Fig. 1. Left side microphotographs of visible gold occurrences in relation to pyrite crystals. Right side related micro-XRF elemental mapping of As and spot location of LA-ICP-MS analyses with As values (ppm). The exact location of the micro-XRF map is indicated by the white square on the microphotographs (left side). On right side images, the light grey pixels indicate a relative enrichment of As in pyrites. For reference, the white contorted lines are the pyrite crystal borders. White and black spots are As-rich and As-poor portions of pyrites respectively. Note the discordant aspect of the As-enrichment corridors relative to the pyrite crystals and the sharp transition from As-poor and As-rich zones indicated by the LA-ICP-MS analytical As values.

In the both the Hayes and Hickey zones mineralization occurs in three forms Type I mineralization consists of massive (> 90%) sulfide veins that range from 1 to 5 cm in width. These veins are for the most part restricted to the massive rhyolite of the Archibald Settlement Formation. However, where Type I veins intersect carapace-breccias or marginal zones of flows characterized by zones of contorted flow-layering and/or auto-breccia development, sulfides fill and cement the interstices such that rhyolite appears to be cemented by sulfide. 

It should be kept in mind that these calculated rates of diffusion and gravitational settling are only applicable to still air. In fact, in the atmosphere the air is rarely still and is usually undergoing some degree of turbulent motion. In this case, the transport of particles becomes more complex and faster due to the velocity gradients and contorted patterns of air flow however, a discussion of this is outside the scope of this book. 

Although in this kind of contorted distribution it is possible to specify some subcategories by eigenvector projection and then to use BA or SIMCA with subcategory spaces, it seems desirable to have methods suitable for handling unsplit categories. 

On a calm day an observer who finds the right place on a stream or a river will see an unobtrusive yet startling phenomenon, a line on the surface of the water. The line may lie still, or it may contort itself, one way and another, in response to eddies. Very likely he will think a spider thread has fallen onto the water and try to cut it with his canoe paddle. As the disturbance caused by the cutting fades, the line reappears, mended and whole. 

Weight. Content In ilvar. Weight Contort In aliver. Weight Weight Content In silver. two load,... 

Figure 2. Several spores in a ground mass of vitrinite. The vitri-nite contains contorted sheets and shreds of exinite-like material.

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