Wheels giant

Coated abrasive products, once limited to sandpaper in woodworking shops, are versatile and efficient industrial tools. Machines ranging from portable Sanders to giant slab conditioners and roU grinders utili2e coated abrasives. Abrasive belt machines now perform many of the operations that were once the exclusive province of grinding wheels. 

Giant wheels of fire driven by gerbs are effected by binding the fireworks to the rim of rotating wooden frames. Alternatively, drivers can be sited at the ends of a pair of wooden arms, pivoting from a central... 

In the case of giant wheel (molybdenum blue) compounds, the general synthetic strategy involves the acidification (pH 1) and reduction of an aqueous molybdate(VI) solution [possible reducing agents iron powder, tin(II) chloride, molybdenum(V) chloride, ascorbic acid, cysteine, hydroxylamine, hypophos-phorous acid, sodium dithionite, or hydrazine sulfate].On the other hand, an icosahedral ball-shaped cluster can be formed in an aqueous Mo(VI)... 

This difficulty in translating what appears to be a simple technique in a beaker to a viable continuous process contributed to the failure of many subsequent pilot plants. It was not until 1967 that the first commercial plant was put on stream, using giant bucket wheel excavators to mine the sand, the hot water process to separate the oil, centrifuging of the froth to remove solid and water contaminants, delayed coking of the bitumen to produce a sour distillate product, followed by hydrofining to produce a "synthetic crude oil. 

Our vision is to use the knotanophanes and the linear oligomeric knotanes as chiral wheel and axle components, respectively, in future giant rotaxanes which would mimic naturally occurring enzyme complexes [60],... 

A. Muller, E. Diemann, C. Kuhlmann, W. Eimer, C. Serain, T. Tak, A. Knochel, and P. K. Pranzas, Hierarchic patterning, architectures beyond giant molecular wheels , Chem. Commun. 1928-1929(2001). 

The giant wheel molyhdenum-oxide based anions can be considered as objects which show a variety of nanoscale structural functionalities ( nanostructured landscape ) not only allowing reactions at a variety of well-defined centres/groups but also offering the option of acting as potential nano-reactors or -containers. Some relevant reactions are ... 

A. Mullee, P. Kogeelee, H. Bogge, Pythagorean Harmony in the World of Metal Oxygen Clusters of the Mon Type Giant Wheels and Spheres both Based on a Pentagonal Type Unit, Struct. Bonding 2000, 96, 203-236 and literature cited therein. 

A. Muller, S. K. Das, C. Kuhlmann et al., On the Option of Generating Novel Type Surfaces with Multiphilic Ligands within the Cavity of a Giant Metal-Oxide Based Wheel Type Cluster Chemical Reactions with Well-Defined Nanoobjects, Chem. Commun. 2001, 655—656. 

One of Seattle s top tourist destinations, Pike Place Market is a bustle of activity. The sounds of artisans spinning pottery on makeshift wheels, street vendors hustling folks into their T-shirt shops, and Bolivian flute musicians fill the air on sunny days. Self-exploration of the market is essential, but be sure to visit Rachel, the giant bronze piggy bank. Donations go to various local charities. 

Pythagorean Harmony in the World of Metal Mon Oxygen Clusters of the Type Giant Wheels and Spheres both Based on a Pentagonal Type Unit... 

Figure 11. Schematic representation of the basic assembly principle of the giant-wheel -shaped cluster units forming layers of 12. The formation is based on the synergetically induced functional complementarity of the...

Comm. 1347 (1999) A. Muller, P. Kogerler, and H. Bogge, Pythagorean harmony in the world of metal oxygen clusters ofthe MOn type giant wheels and spheres both based on apentagonal type unit. Struct. Bond. 96 203 (2000). 

A. Muller, E. Krickemeyer, H. Bogge, M. Schmidtmann, F. Peters, C. Menke, and J. Meyer, An unusual polyoxomolybdate giant wheels linked to chains, Angew. Chem., Int. Ed. 36 484 (1997). 

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