SHUNT PROTECTION FOR SUPERCONDUCTING MAGLEV MAGNETS
Abstract Closely coupled, short-circuited shunt coils are proposed for quench protection of super-conducting Maglev magnets which use high resistance, matrix composite conductors. It is shown that, by suitable design, the shunts can reduce ac losses and that the changing currents during magnet energization or vehicle lift off and landing can be tolerated.
The Canadian high speed magnetically levitated vehicle system
Describes a technically feasible high speed (400-480 km/h) guided ground transportation system, based on the use of the vehicle-borne superconducting magnets for electrodynamic suspension and guidance and for linear synchronous motor propulsion which has been defined as a future modal option for Canadian application. A variety of sophisticated analytical techniques have been developed to establish a comprehensive theoretical base for conceptual design studies. Analysis and design proposals have been validated by large-scale tests on a rotating wheel facility and by modelling system components and their interactions. It is concluded that the proposed Maglev system is a sufficiently promising approach to high speed guided ground transport to warrant an assessment of its economic viability in Canada, the development of critical components (particularly lightweight superconducting magnets), and continued technical refinement.
The risk of Listeria monocytogenes infection in beef cattle operations
Aim:  To determine the prevalence of Listeria monocytogenes and associated risk factors among beef operations (cow‐calf and feedlot) in central and southern California.