The most commonly used fuels for commercial aviation are Jet A and Jet A-1, which are produced to a standardized international specification. The only other jet fuel commonly used in civilian turbine-engine powered aviation is Jet B, which is used for its enhanced cold-weather performance.Jet fuel is a mixture of a large number of different hydrocarbons.The range of their sizes (molecular weights or carbon numbers) is restricted by the requirements for the product, for example, the freezing point or smoke point.he first axial compressor jet engine in widespread production and combat service, the Junkers Jumo 004 on the Messerschmitt Me 262 A fighter, and the Arado Ar 234 B jet recon-bomber, burned either a special synthetic J2 fuel or diesel fuel. Gasoline was a third option but unattractive due to high fuel consumption.
plate versus rod characteristics of trabecular bone, was defined as plate bone volume divided by rod bone volume. Trabecular network intactness was character- ized by plateâplate, plateârod, and rodrod junction â density (P-P, P-R, and R-R Junc.D, mm-3), calculated as the total junctions between trabecular plates and rods normalized by the bulk volume. Orientation of the trabe-
Myasthenia gravis is the most common neuromuscular disease affecting function of the end plate in patients. It is present in 100 people out of 1,000,000 in the population, and its onset is usually in either younger or older individuals. Acquired myasthenia gravis is the most common neuromuscular junction disease.