Crystals of an Insoluble Carbonate of Copper Grown under a Soda Solution

Copia digital. Madrid : Ministerio de Educación, Cultura y Deporte, 201

Status of the Muon (g-2) Experiment

The status of the muon (g-2) experiment, E821 at the Brookhaven AGS, is given. A new result with a precision of 5 parts per million has been obtained with direct muon injection into the ring and is presented. The theoretical motivation for the experiment, and a discussion of the sensitivity to non-standard model physics is also discussed.Comment: 12 pages, Latex, special macros needed: LP99macros.tex, Invited presentation at the XIX International Symposium on Lepton and Photon Interactions at High Energy, Stanford University, August 199

Advanced low-NO(x) combustors for supersonic high-altitude gas turbines

The impact of gas-turbine-engine-powered aircraft on worldwide pollution was defined within two major areas of contribution. First, the contribution of aircraft to the local air pollution of metropolitan areas and, second, the long-term effects on the chemical balance of the stratosphere of pollutants emitted from future generations of high-altitude, supersonic commercial and military aircraft. Preliminary findings indicate that stratospheric oxides of nitrogen (NOx) emissions may have to be limited to very low levels if, for example, ozone depletion with concomitant increases in sea-level radiation, are to be avoided. Theoretical considerations suggest that (NOx) levels as low as 1.0 gram per kilogram of fuel and less should be attainable from a idealized premixed type of combustor. Experimental rig studies were intended to explore new combustor concepts designed to minimize the formation of (NOx) in aircraft gas turbines and to define their major operational problems and limitations