Abstract: A system for managing firewall rules between different services. In certain instances, the method includes receiving a discovery graph comprising a plurality of services and at least one application programming interface (API) dependency, wherein the plurality of services comprises a first service and a second service. In some instances, the method further includes determining whether the second service is permitted to receive an initial communication from the first service based upon the at least one API dependency included in the discovery graph. And, in response to determining the second service is permitted to receive the initial communication from the first service, the method can include establishing a first rule for a firewall between the first service and the second service, the first rule allowing the second service to receive the initial communication from the first service.

Abstract: The present invention is directed to cement-based coating compositions providing a stable, hard, fast setting and drying cement coating. In particular, the cement-based coating includes a low-flashing, VOC-exempt solvent in combination with cement materials, aggregates, resins and other optional components. Methods of making, application and use of the cement coating composition are further disclosed herein.

Abstract: A vehicle wheel lighting system powered by the sun including light emitting devices attached to the front of a wheel in an aesthetic array. The light emitting devices are powered by rechargeable batteries that are recharged by solar panels. The light emitting devices are activated by light sensors that sense ambient light for automatically energizing the light emitting devices in darkness. In addition to the vehicle lighting system's aesthetics, it also provides automatic lighting for the vehicle, which from the safety standpoint is beneficial when a vehicle is parked or stopped or moving.

Abstract: There is disclosed a parallel loaded series resonant converter 300 suitable for supplying DC to a three axis gradient amplifier in an MRI system. In conventional resonant circuits, output voltage is regulated by controlling the switching frequency of an H-bridge or half bridge switching arrangement and the resonant circuit (334, 335) is under more stress at no load than at full load. The voltage across the resonant capacitor (334) is a function of the switching frequency, the load and the voltage applied across the resonant circuit (VA-VB). In the present invention, the peak current at no load is reduced to lower than the peak current at full load by controlling the voltage applied to the resonant circuit (VA-VB) rather than controlling the switching frequency.

Abstract: There is disclosed a parallel loaded series resonant converter 300 suitable for supplying DC to a three axis gradient amplifier in an MRI system. In conventional resonant circuits, output voltage is regulated by controlling the switching frequency of an H-bridge or half bridge switching arrangement and the resonant circuit (334, 335) is under more stress at no load than at full load. The voltage across the resonant capacitor (334) is a function of the switching frequency, the load and the voltage applied across the resonant circuit (VA-VB). In the present invention, the peak current at no load is reduced to lower than the peak current at full load by controlling the voltage applied to the resonant circuit (VA-VB) rather than controlling the switching frequency.

Abstract: A regulated resonant converter comprises a series resonant circuit through which current is switched alternately in opposite directions by a pair of switching transistors, a rectifier via which the switching transistors are fed with d.c. current from an a.c. mains supply input, operation of the switching transistors being controlled by signals generated in a control circuit, in dependence upon a fed-back sample of a convertor output developed in the resonant circuit in accordance with the amplitude of which regulation is effected, and a cross-over voltage associated with current reversal in an inductor which forms a part of the resonant circuit, which cross-over voltage is fed to the control circuit via a differentiator whereby switch operation is effectively enhanced.

Abstract: A resonant converter arrangement comprises two resonant converters, each having a resonant circuit through which current is switched alternately in opposite directs by respective switch elements. The outputs of the two resonant converters are combined to provide an output of the arrangement which has an amplitude that is dependent upon the relative phase of the outputs of the two resonant converter. For the later purpose, switch controller controls the switch element for one of the two resonant converters, in accordance with such relative phase of the two resonant converters.