Most commercial flights, however, fly at 38,000 feet above the Class B maximum height and there is not a specific speed limit imposed. BA Captain Dave Thomas stated why they fly at this height: 'This sort of altitude is a good compromise between engine efficiency and aerodynamic efficiency for jet aircraft.
The most common cause of de Quervainâs tenosynovitis is chronic overuse of the wrist. Repetitive movements day after day cause irritation and pain. One common movement that causes it is lifting a child into a car seat. Another is lifting heavy grocery bags by the handles.
TEXT. A number sign (#) is used with this entry because Cockayne syndrome A (CSA) is caused by homozygous or compound heterozygous mutation in the gene encoding the group 8 excision repair cross-complementing protein (ERCC8; 609412) on chromosome 5q11.allery, D. L., Tanganelli, B., Colella, S., Steingrimsdottir, H., van Gool, A. J., Troelstra, C., Stefanini, M., Lehmann, A. R. Molecular analysis of mutations in the CSB (ERCC6) gene in patients with Cockayne syndrome. Am. J. Hum. Genet.