Abstract: The present disclosure relates to relates to an apparatus for introducing a queen bee to a new or existing beehive. Specifically, the present disclosure relates to a queen bee cage or cradle holder apparatus, which is adapted for holding various sizes and shapes of cages and which suspends the queen bee in her cage securely in an ideal position within the new beehive. The apparatus is designed to easily insert and remove the queen bee cage from the beehive.

Abstract: The present disclosure relates to relates to an apparatus for introducing a queen bee to a new or existing beehive. Specifically, the present disclosure relates to a queen bee cage or cradle holder apparatus, which is adapted for holding various sizes and shapes of cages and which suspends the queen bee in her cage securely in an ideal position within the new beehive. The apparatus is designed to easily insert and remove the queen bee cage from the beehive.

Abstract: A system for reducing temporal fluctuations in a powered magnet. The system includes a magnetic field generator that generates a magnetic field with temporal fluctuations and a power supply having an AC/DC converter that delivers electric current to the magnetic field generator. A cascade compensator having an inner control loop that outputs an inner loop signal and an outer control loop that outputs an outer loop signal is included. The inner control loop has a pickup coil and an analog integrating preamplifier and the outer control loop has a magnetic resonance field estimator. The inner control loop senses fluctuations of the magnetic field over 1 Hz and the outer control loop senses fluctuations of the magnetic field from DC to 20 Hz. The cascade compensator generates a correcting magnetic field that cancels the fluctuations based on the inner loop signal and the outer loop signal.

Abstract: A system for reducing temporal fluctuations in a powered magnet. The system includes a magnetic field generator that generates a magnetic field with temporal fluctuations and a power supply having an AC/DC converter that delivers electric current to the magnetic field generator. A cascade compensator having an inner control loop that outputs an inner loop signal and an outer control loop that outputs an outer loop signal is included. The inner control loop has a pickup coil and an analog integrating preamplifier and the outer control loop has a magnetic resonance field estimator. The inner control loop senses fluctuations of the magnetic field over 1 Hz and the outer control loop senses fluctuations of the magnetic field from DC to 20 Hz. The cascade compensator generates a correcting magnetic field that cancels the fluctuations based on the inner loop signal and the outer loop signal.