Abstract: A utility knife is provided that has an elongated main body portion and a head assembly that is separate from the main body portion. The main body portion has a handle assembly. A main body fastening mechanism is provided at one distal end of the handle assembly, and a handle assembly fastening mechanism is provided at one end of the handle assembly. A threaded pin pivotally fastens the main body portion to the head assembly by connecting the main body fastening mechanism to the handle assembly fastening mechanism. Accordingly, the head assembly can pivot with respect to the main body portion and handle assembly, so that the utility knife can be configured to cut an object at different angles, which can be particularly useful for the knife to fit in a tight cutting space.

Abstract: An electrosurgical generator may reduce unintended tissue damage by improving regulation of output power. The electrosurgical generator may control the power during a cycle, and react to a change in power if arcing occurs. Voltage sources, especially, demonstrate the tendency to have large, uncontrolled power excursions during normal electrosurgical use. The magnitude of the power excursions may be dependent on various factors. An exemplary electrosurgical generator control scheme reduces or minimizes the thermal spread by accurately supplying the specified power within a few cycles. Additionally, fast and accurate regulation provided by the constant voltage mode reduces or minimizes unintentional tissue charring. Thus, reduced thermal spread and charring should result in better surgical outcomes by reducing scarring and decreasing healing times.

Abstract: A current sensor includes a Rogowski coil disposed on a flexible printed circuit board with at least one active lead passing through the Rogowski coil.

Abstract: A method of operating a resource management node includes, for each of a plurality of resources available in a plurality of distributed computing systems, determining a productive spend metric based on utilization of the resource and cost associated with making the resource available in the distributed computing system. Relocation of workload of selected ones of the resources between the plurality of distributed computing systems is controlled based on the productive spend metrics determined for the selected ones of the resources. Related computer program products and resource management nodes are disclosed.

Abstract: The present disclosure is directed to an electrosurgical generator an H-bridge and a tank driven by the H-bridge. The tank includes a transformer having a primary winding and a secondary winding. The secondary winding includes a first coil and a second coil. In the electrosurgical generator, a capacitor is connected in series between the first coil and the second coil.

Abstract: An ultrasonic motion generator includes a non-resonant inverter, an ultrasonic transducer, and a comparator. The non-resonant inverter inverts direct current (DC) to alternating current (AC) having a first frequency. The ultrasonic transducer is electrically coupled with the non-resonant inverter and generates an ultrasonic motion based on the inverted AC. The comparator automatically detects a deviation of the first frequency from a resonant frequency of the ultrasonic transducer based on motion current passing through the ultrasonic transducer and generates an output signal based on the deviation to drive the non-resonant inverter.

Abstract: A mass spectrometer is disclosed comprising a RF confinement device, a beam expander and a Time of Flight mass analyzer. The beam expander is arranged to expand an ion beam emerging from the RF confinement device so that the ion beam is expanded to a diameter of at least 3 mm in the orthogonal acceleration extraction region of the Time of Flight mass analyzer.

Abstract: The present invention relates to a method and system for fiber positioning in wide-field astronomy. In one form the method and system of the present invention relate to anchoring fiber end points adjacent or against the field plate of a telescope. In one embodiment the positioning system for anchoring a fiber end point at a location on a telescope field plate collocated with a telescope focal plane, the positioning system comprising a piezoelectric positioning device for positioning the fiber end point, the positioning device comprising a chamber having an opening, the opening lying against the field plate in use defining a substantially enclosed volume inside the chamber, a pump for reducing pressure inside the enclosed volume; and a path connecting the pump and the enclosed volume so that, in use, the pump effects a reduction in pressure in the chamber thereby anchoring the fiber end point on the field plate.

Abstract: A current sensor includes a Rogowski coil disposed on a flexible printed circuit board with at least one active lead passing through the Rogowski coil.

Abstract: An electrosurgical system is provided. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. A power source operably couples to the electrosurgical generator and is configured to deliver power to one or more types of loads connected to the electrosurgical generator. The electrosurgical generator includes a controller including a microprocessor coupled to the electrosurgical generator and configured to control the output of the electrosurgical generator. A fiber optic connection circuit is in operative communication with the controller and includes one or more types of logic devices and one or more types of fiber optic channels. The fiber optic connection circuit is configured to mitigate leakage current associated with at least one of a plurality of components operatively associated with the electrosurgical generator by providing isolation.

Abstract: Apparati and methods for dispensing sanitizer fluid via handles on doors and equipment, and data and recording events pertaining to hand sanitization, are disclosed.

Abstract: A mass spectrometer is disclosed comprising a RF confinement device, a beam expander and a Time of Flight mass analyser. The beam expander is arranged to expand an ion beam emerging from the RF confinement device so that the ion beam is expanded to a diameter of at least 3 mm in the orthogonal acceleration extraction region of the Time of Flight mass analyser.

Abstract: A resource management node includes a processor and a memory coupled to the processor. The memory includes computer readable program code that when executed by the processor causes the processor to perform operations. The operations can include, for each of a plurality of guest virtual machines (VMs), determining operational resources of physical host machines available in a distributed computing system that are needed to provide the guest VM. The operations can further include determining an amount of infrastructure of a distributed computing system used by a defined placement of physical host machines in racks of the distributed computing system.

Abstract: Some embodiments disclosed herein are directed to a resource management node having a processor and memory coupled to the processor. The memory includes computer readable program code that when executed by the processor causes the processor to perform operations. The operations include, for each of a plurality of guest virtual machines (VMs) of a VM cluster provided by computer operations of a physical machine among a plurality of physical machines within a distributed computing system, determining a productivity metric for the guest VM based on resources of the physical machine that are used by the guest VM. The operations further include for each of the guest VMs, determining, based on the productivity metric for the guest VM, an infrastructure value that indicates how much infrastructure of the distributed computing system is attributed to providing the guest VM.

Abstract: A resource management node includes a processor and a memory coupled to the processor. The memory includes computer readable program code that when executed by the processor causes the processor to perform operations. The operations can include, for each of a plurality of guest virtual machines (VMs), determining operational resources of physical host machines available in a distributed computing system that are needed to provide the guest VM. A placement scenario for placing the guest VMs on the physical host machines and placing the physical host machines in cabinets of a distributed computing system is generated. An amount of infrastructure of the distributed computing system used by the placement scenario is determined. A determination is made whether the placement scenario satisfies a defined rule for how much infrastructure of the distributed computing system can be used.

Abstract: A resource management node includes a processor and a memory coupled to the processor. The memory includes computer readable program code that when executed by the processor causes the processor to perform operations. The operations can include identifying an unproductive group of guest virtual machines (VMs) that satisfy a defined rule for being unproductive on an first group of physical host machines based on infrastructure of a distributed computing system used by the first group of the physical host machines to host the guest VMs. A relocation scenario is generated for relocating the unproductive group of the guest VMs from the first group of the physical host machines to a second group of the physical host machines. An effect of the relocation scenario on infrastructure usage of the distributed computing system is estimated.

Abstract: A current sensor is disclosed. The current sensor includes a Rogowski coil disposed on a flexible printed circuit board with at least one active lead passing through the Rogowski coil.

Abstract: The disclosed electrosurgical systems and methods accurately determine the power actually applied to a load by using equalizers to calibrate the power measurements. The electrosurgical systems include an electrosurgical generator and an electrosurgical instrument coupled to the electrosurgical generator through an electrosurgical cable. The electrosurgical generator includes an electrical energy source, voltage and current detectors, equalizers that estimate the voltage and current applied to a load, and a power calculation unit that calculates estimated power based upon the estimated voltage and current.