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A 200 X 200 nm AFM image of Ci 2TACI aggregates on mica Proposed model of flexible cylindrical aggregates on mica

A 200 x 200nm AFM image of CieTACl aggregates on graphite Proposed model of half-cylindrical aggregates at a crystalline hydrophobic substrate, with bottom row of molecules oriented along the substrate symmetry axes

A 200-A tin oxide discontinuous film with TEM.

A 200-ms FVC reactor installed at Che-mische Werke Hills with a capacity of 30,000 to 50,000 tons year of FVC grade suspension or emulsion

A 207Pb 206Pb versus 204Pb 206Pb diagram of starting anorthite and samarskite. Lead isotopic compositions of silica glass , stainless steel, blank sample 0577-1 annealed at 1050 C, and blank run 570 shocked at 34 GPa are also shown in the inset diagram.

A 21-component multiporphyrin array. Reprinted with permission from Drain. C. M. Lehn, J.-M. y. Chem. Soc, Chem. Commun. 1994, 2313.

A 220-MHz H NMR spectrum of the hydrochlorinated 1,4-polydi-methylbutadiene sample. Chlorobenzene solution at lOO C with TMS as reference.

A 220-MHz NMR spectra of the hydrohalogenated 1,4-polyisoprene samples. Chlorobenzene solutions at 100 C with TMS as reference.

A 225 GHz pulsed coherent radar.

A 23 factorial design.

A 24 atom ground state structure found in the ground state search using

A 24 h data set for evaluation the tap feature, while the prototype was worn on the wrist. 5 activities were performed for about an hour each, among 20 h of background data

A 24 pixels bteadboaid model of ISGRl

A 24-channel SPR instrument constructed by the University of Washington.

A 24-hexagon toroidal polyhex. Filled hexagons all represent the same hexagon on the torus. These are where this arbitrarily marked hexagon occurs in this endlessly repeating representation of the toroidal surface as the unique descriptor.

A 243-ferrocenyl dendrimer prepared from a dendritic precursor, having 81 C02H groups at the periphery, and the tertiary amine NKCH CsI FeiCsHsIb in THF at room temperature. The tiny balls at the periphery of the giant dendrimer represent

A 2450 A PPy PSS film cycled in NaC104 aqueous shows reversibility of mass injection removal during electrochemical cycling .

A 25 minute operation cycle of the mass spectrometer directly connected to the simulation chamber during the OH oxidation of NMP in the aqueous phase. The cycle was repeated 48 times, to cover the 20 hours of a reaction run.

A 25 mm thick, 95 alumina ceramic liner during and after installation in a 1800 mm diameter cyclone that will be used to remove silica sand from a pneumatic conveying system. Tiles are secured with a welded metal anchoring system and set with a refractory cement mixture. Upper pictures show cyclone barrel, inner roof and vortex tube. Lower pictures are of finished cone section. Courtesy Omegaslate Limited

A 25 year old man suffered a penetrating knife injury, with laceration of the duodenum. Fever, tachycardia and general condition of the patient suggested postoperative complications. Arrows indicate the persistent duodenal leak. This was followed by successful reoperation

A 25-atom quantum subsystem embedded in an 8863-atom classical system to model the catalytic step in the conversion of D-2-phosphoglycerate to phosphoenolpyruvate by enolase. What factors influence the choice of where to set the boundary between the QM and MM regions Alhambra and co-workers found, using variational transition-state theory with a frozen MM region that was selected from a classical trajectory so as to make the reaction barrier and thermochemistry reasonable, that the breaking and making bond lengths were 1.75 and 1.12 A, respectively, for H, but 1.57 and 1.26 A, respectively, for D

A 25-m fused-silica capillary column.

A 250-year-old text on earthquakes.

A 26 C reproduced with permission from Ref. 86 .

A 26-min expansion of a 2D chromatogram of lemon essential oil. 1, linalool,



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