RESUMO
After the dynamo experiment in November 1999 [A. Gailitis et al., Phys. Rev. Lett. 84, 4365 (2000)] had shown magnetic field self-excitation in a spiraling liquid metal flow, in a second series of experiments emphasis was placed on the magnetic field saturation regime as the next principal step in the dynamo process. The dependence of the strength of the magnetic field on the rotation rate is studied. Various features of the saturated magnetic field are outlined and possible saturation mechanisms are discussed.
RESUMO
In a closed volume of molten sodium an intense single-vortex-like helical flow has been produced by an outside powered propeller. At a flow rate of 0.67 m(3)/s a slowly growing magnetic field eigenmode was detected. For a slightly lower flow, additional measurements showed a slow decay of this mode. The measured results correspond satisfactorily with numerical predictions for the growth rates and frequencies.
RESUMO
Information management is critical in today's health care environment. Traditional paper-based medical records are inadequate information management tools. Electronic medical records (EMRs) overcome many problems with paper records and are ideally suited to help physicians increase productivity and improve the quality of care they provide. The Department of Family Medicine at the Medical University of South Carolina uses the Practice Partner Patient Record EMR system. Department members have developed a quality improvement model based on this EMR system. The model has been used to improve care for acute bronchitis, diabetes mellitus, tobacco abuse, asthma, and postmenopausal osteoporosis.