DANC

Kosloff R, Rice S A, Gaspard P, Tersigni S and Tannor D J 1989 Wavepacket dancing achieving chemical selectivity by shaping light pulses Chem. Phys. 139 201-20... 

At the end of the banquet, we ascended the stairs to the Gold Room, where there was dancing till the early hours of the next day. Judy and 1 were, however, too exhausted after the long day, and after some private time with our Royal hosts we returned (or shall 1 say floated back) to our hotel. 

A computer must communicate with a variety of peripheral devices (keyboard, mouse, printer, mass spectrometer). A central processing unit (CPU) controls the flow of information to each, rather like a choreographer directing complicated dance routines. 

Introduction of a 3-bromosubstituent onto thiophene is accompHshed by initial tribromination, followed by reduction of the a-bromines by treatment with zinc/acetic acid, thereby utilizing only one of three bromines introduced. The so-called halogen dance sequence of reactions, whereby bromothiophenes are treated with base, causing proton abstraction and rearrangement of bromine to the produce the most-stable anion, has also been used to introduce a bromine atom at position 3. The formation of 3-bromotbiopbene [872-31-1] from this sequence of reactions (17) is an efficient use of bromine. Vapor-phase techniques have also been proposed to achieve this halogen migration (18), but with less specificity. Table 3 summarizes properties of some brominated thiophenes. 

The route to 3-bromothiophene utilises a variation of the halogen dance technology (17). Preferably, 2,5-dibromothiophene [3141-27-3] is added to a solution of sodamide in thiophene containing the catalyst tris(2-(2-methoxyethoxy)ethyl)amine (l DA-1) (33) at temperatures marginally below reflux. On completion, quenching exothermically Hberates ammonia gas the organic phase is separated, washed, and distilled, and foremnning thiophene is recycled. Material of 97—98% purity is isolated. 

Cnhen, S. C. and K. D. Dance, 1975, Scoping Assessment of the Environmental Health Risk associated with Accidents in the LWR Supporting Fuel Cycle, Teknekron Inc. 4701 Sangamore Rd., Washington, D.C. 20016. 

Dance and K. Fisher, Prog. Inorg. Chem. 41, 637-803 (1994). A comprehensive review with 503 references, 100 structural diagrams and 40 pages of tabulated material. 

I. G. Dance, Chap. 5 in Comprehensive Coordination Chemistry, Vol. 1, pp. 135-78, Pergamon Press, Oxford, 1987. 

Veitstanz, m. St. Vitus s dance, chorea. Vektorengleichung,/. vector equation. Vektorgeriist, n. vector diagram, vektorieil, a. vectorial. 

Because the film growth rate depends so strongly on the electric field across it (equation 1.115), separation of the anodic and cathodic sites for metals in open circuit is of little consequence, provided film growth is the exclusive reaction. Thus if one site is anodic, and an adjacent site cathodic, film thickening on the anodic site itself causes the two sites to swap roles so that the film on the former cathodic site also thickens correspondingly. Thus the anodic and cathodic sites of the stably passive metal dance over the surface. If however, permanent separation of sites can occur, as for example, where the anodic site has restricted access to the cathodic component in the electrolyte (as in crevice), then breakdown of passivity and associated corrosion can follow. 

The ballerinas in Degas s painting The Dancers look like they have depleted their glucose by using it for energy to dance. 

E en grey-beards turn freshy, dance, caper, and laugh. 

These drugs can be differentiated by retention time and the m/z 156 and m/z 157 abun dance ratios. 

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