Abstract: A handheld mobile device may be configured for use within a cockpit or cabin of an aircraft. The handheld mobile device may include a display and memory that includes an application configured to utilize the display. The handheld mobile device may also include a processor coupled to the memory. The application, via the processor, may be configured to receive aircraft-specific configuration data. The application may also receive, from a tracker module, input data corresponding to blade height and position. The application may additionally receive airframe vibration data from an accelerometer module. The application may further calculate recommendations regarding track and balance. The application may also further output, via the display, the track and balance recommendations.

Abstract: A gear assembly for use with a turbomachine comprises a sun gear, a plurality of planet gear layshafts that each support a first stage planet gear and a second stage planet gear, and a ring gear. The sun gear is configured to rotate about a longitudinal centerline of the gear assembly, and the plurality of planet gear layshafts have a tubular shape.

Abstract: A system and method determines a unique performance benchmark for specific computer object code for a particular microprocessor. By generating multiple unique benchmarks for a single, same code module on multiple different processors, the method determines which processor is optimal for the code module. By generating for a single designated processor a performance benchmark for each code modules of multiple modules, where the multiple modules have a same/similar functionality but variations in detailed code or algorithms, the system and method identifies code variation(s) which is/are optimal for the single designated processor. The system and method may entail first extracting selected features of object code (as actually executed) into a code profile, and then generating the performance benchmark based on the code profile and in machine-level timing data for the selected microprocessor. In this way, code security is achieved by fire-walling the object code from the second stage of the method.

Abstract: A wireless patient monitoring system includes at least one wireless physiological sensor having a sensing element senses physiological parameter information from a patient. A sensor controller is configured to determine a current parameter value based on the physiological parameter information and to compare the current parameter value to a prior parameter value. Based on the comparison, the sensor controller determines if the current parameter value is redundant of the prior parameter value. If so, then the current parameter value is not transmitted. If the current parameter is not redundant of the prior parameter value, then a wireless transmitter is controlled to wirelessly transmit the current parameter value.

Abstract: A physiological sensor includes a sensing element to detect physiological information from a patient's skin, a substrate configured to hold the sensing element on the patient's skin, and at least two contact probes on the substrate. The contact probes are positioned on the substrate such that galvanically contact the patient's skin when the substrate is fully attached against the patient's skin. A controller is configured to measure impedance between the at least two contact probes and determine whether the substrate has lifted from the patient's skin based on the impedance.

Abstract: A binder solution comprises greater than or equal to 0.5 wt % and less than or equal to 20 wt % of nanoparticles, a thermoplastic binder, and a solvent. The nanoparticles may comprise metallic nanoparticles comprising nickel, silver, chromium, aluminum, cobalt, iron, or combinations thereof. The nanoparticles may comprise ceramic nanoparticles, the comprising alumina, aluminum nitride, zirconia, titania, silica, silicon nitride, silicon carbide, boron nitride, or combinations thereof. A method of manufacturing a part includes depositing a layer of particulate material on a working surface, applying a binder solution into the layer of particulate material in a pattern, repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder solution, and curing the applied binder solution in the plurality of layers of particulate material with the applied binder solution to evaporate the solvent and thereby form a green body part.

Abstract: A method carried out by a printing device includes receiving a model of a three-dimensional component, receiving an output structure definition for the component, and segmenting the model of the component into a stack of slices. The method further includes, for each of the slices in the stack, outputting a respective printing layer comprising an arrangement of one or more slice instances of the slice according to the output structure definition.

Abstract: A binder solution comprises a fugitive metal precursor, a thermoplastic binder, and a solvent. The fugitive metal precursor may comprise an alkaline earth metal, a transition metal, a post-transition metal, a metalloid, a rare earth metal, or combinations thereof. The fugitive metal precursor may comprise a salt such as carboxylate, nitrate, sulfate, carbonate, formate, chloride, halide, derivatives thereof, and combinations thereof. A method of manufacturing a part includes depositing a layer of particulate material on a working surface, selectively applying a binder solution into the layer of particulate material in a pattern representative of a layer of the part, repeating the steps of depositing and selectively applying to form a plurality of layers of particulate material with the applied binder solution, and curing the applied binder solution in the plurality of layers of particulate material with the applied binder solution to evaporate the solvent and form a green body part.

Abstract: A method of manufacturing comprises depositing a layer of a powder on a working surface and selectively depositing a water-based binder solution comprising from 0.1 wt % to 5 wt % of a non-aqueous solvent having a boiling point of greater than 100° C. and less than or equal to 175° C. at 1 atm and a thermoplastic binder comprises a first polymer strand including a first functional group and a second polymer strand including a second functional group into the layer of powder in a pattern representative of a structure of a part. The method further comprises non-covalently coupling the first and second polymer strands together via interaction between the first and second functional groups to form a green body part.

Abstract: An electronics package includes an electrically insulating substrate having a first surface and a second surface, an adhesive layer positioned on the first surface of the electrically insulating substrate, and an electrical component having a top surface coupled to the adhesive layer on a surface thereof opposite the electrically insulating substrate, the electrical component having contact pads on the top surface. Vias are formed through the electrically insulating substrate and the adhesive layer at locations corresponding to the contact pads by way of a mechanical punching operation, with each of the vias having a via wall extending from the second surface of the electrically insulating substrate to a respective contact pad. At each via, the electrically insulating substrate comprises a protrusion extending outwardly from the first surface thereof so as to cover at least part of the adhesive layer in forming part of the via wall.

Abstract: In various embodiments, a water-based binder solution for use in additive manufacturing, includes a thermoplastic binder. The thermoplastic binder includes a first polymer strand having a weight average molecular weight (Mw) of from greater than or equal to 5,000 g/mol to less than or equal to 15,000 g/mol, a second polymer strand having a weight average molecular weight of from greater than or equal to 10,000 g/mol to less than or equal to 50,000 g/mol, and a third polymer strand having a weight average molecular weight of from greater than or equal to 1,000 g/mol to less than or equal to 5,000 g/mol. The binder solution further comprises from greater than or equal to 0.1 wt % to less than or equal to 5 wt % of a non-aqueous solvent having a boiling point of greater than 100° C.

Abstract: A system for monitoring room use in a medical facility. The system includes medical devices having sensors that produce machine data corresponding to operation of that medical device. A central processing module analyzes the machine data to identify portions corresponding to clinical cases via at least one of: detecting changes in operational status within the medical devices, detecting changes to devices settings within the medical devices, and detecting a delivery or consumption of anesthetic agent by the medical devices. The central processing module further analyzes the identified portions of the machine data corresponding to the clinical cases to identify procedural events, then automatically determines a current use status for the monitored rooms based on the procedural events identified. A display device communicates with the central processing module and displays the current use status determined for each of the monitored rooms.

Abstract: A method of manufacturing a green body part comprises depositing a layer of a powder on a working surface; and selectively depositing a binder solution comprising a thermoplastic binder, a fluorescent material, and a binder medium into the layer of powder in a pattern representative of a structure of a layer of the green body part. The thermoplastic binder comprises one or more polymer strands dissolved in a solvent medium having an average molecular weight from greater than or equal to 7,000 g/mol to less than or equal to 100,000 g/mol. Binder solutions comprising fluorescent material and green body parts adhered together using the same are also disclosed.

Abstract: A wireless patient monitoring system includes a host device configured to pair with one or more wireless physiological sensors to receive physiological data therefrom. The host device includes a nearfield communication (NFC) transmitter emitting an electromagnetic field. The system includes at least one wireless physiological sensor having a sensing element that senses physiological parameter information from a patient, a battery, and a field detection circuit configured to detect NFC field and to generate an activation signal thereupon. A sensor controller is configured to operate in a sleep state that maximizes battery power consumption by the wireless physiological sensor and to receive the activation signal from the field detection circuit when the NFC field is detected. After receipt of the activation signal, the sensor controller operates the wireless physiological sensor in an activated mode that enables full power consumption by the wireless physiological sensor.

Abstract: A method, apparatus, and program for additive manufacturing. The additive manufacturing device includes a positioning mechanism configured to provide independent movement of at least one build unit in at least two dimensions. The build unit may further include a gasflow device for providing a flow zone along a first direction with relation to the build unit. The build unit may further include a powder delivery mechanism and an irradiation beam directing unit. The irradiation bean unit may follow a first irradiation path, wherein the first irradiation path forms at least a first solidification line and at least a second solidification line formed at an angle other than 0° and 180° with respect to the first solidification line. During the formation of the first solidification line, the build unit may be positioned in a first orientation such that the first direction of the flow zone is substantially perpendicular to the first solidification line.

Abstract: A neonatal blanket includes a substrate material configured to cover a neonate and at least one antenna on the substrate material, where the antenna is configured to transmit RF energy to power the at least one wireless physiological sensor on the neonate. The blanket further includes a power connection configured to connect to a power source to power the wireless physiological sensor via the antennae.

Abstract: A multi-sensor patch for simultaneous abdominal monitoring of maternal and fetal physiological data includes a multi-layer flexible substrate. The multi-layer flexible substrate includes a center region and a plurality of electrode regions. An electrode of the plurality of electrodes is located in each of the electrode regions. At least one auxiliary sensor which may be an optical sensor. A module unit is connected to the conductive layer at the center region. The module unit is configured to receive biopotential physiological data from the plurality of electrodes and photosignal data from the optical sensor. The module unit calculates at least fetal heart rate (fHR), maternal heart rate (mHR), and uterine activity (UA) from the biopotential physiological data and fHR, mHR, and SpO2 from the photosignal data.

Abstract: A structure is provided. The structure defines a first direction, a second direction, and a third direction, the three directions orthogonal to each other. The structure includes a first section, a second section, and a third section. The first section includes a plurality of unit cells joined together, wherein the first section has a first average tensile strength and a first average crack growth resistance. The second substantially solid section is within and surrounding each unit cell of the plurality of first section unit cells, wherein the second section has a second average tensile strength and a second average crack growth resistance, the second average tensile strength different from the first average tensile strength and the second average crack growth resistance different from the first average crack growth resistance. The third section surrounds the first section and the second section.

Abstract: Optimization systems and methods for optimizing business operations and asset systems are disclosed. A system includes digital twins corresponding to asset systems; business models corresponding to business operations; and an electronic control unit (ECU). The ECU is programmed to: implement an asset optimizer module, where implementing the asset optimizer module interconnects the digital twins for optimization; execute the asset optimizer module, where the asset optimizer module optimizes the digital twins to obtain one or more optimization parameters for the asset systems; implement a system optimizer module, where the system optimizer module receives the one or more optimization parameters and the business models; execute the system optimizer module, where the system optimizer module generates operation protocols for the business models; and output, to a user, the operation protocols for implementation in a real-world asset system.

Abstract: A turbomachine engine includes a fan assembly and a core engine comprising a turbine and an input shaft rotatable with the turbine is provided. A single-stage epicyclic gear assembly receives the input shaft at a first speed and drives an output shaft coupled to the fan assembly at a second speed. A sun gear rotates about a longitudinal centerline of the gear assembly and has a sun gear-mesh region along the longitudinal centerline of the gear assembly where the sun gear is configured to contact a plurality of planet gears. A ring gear-mesh region is provided along the longitudinal centerline of the gear assembly where a ring gear is configured to contact the plurality of planet gears. The sun gear-mesh region is axially offset from the ring gear-mesh region along the longitudinal centerline.

Abstract: A multi-switch types hybrid power electronics build block (MST HPEBB) least replaceable unit converter employs a first low voltage side (for example, 1000 volt power switches) and a second high voltage side (for example, 3000 volt power switches). The MST HPEBB LRU employs multiple bridge converters connected in series and/or in parallel, and coupled in part by a 1:1 transformer. To reduce weight and volume requirements compared to known PEBB LRUs, different power switch types are employed in different bridge converters. For example, in one exemplary embodiment, low voltage 1.7 kVolt SiC MOSFETS may be employed on the lower voltage side, while at least some 4.5 kVolt Silicon IGBTs may be employed on the high voltage side.

Abstract: A method for producing a functionally graded component layer-by-layer includes: depositing radiant-energy-curable resin on a build surface defined by a resin support, the resin containing filler including at least two groups of particles with different physical properties; allowing the filler to settle such that the groups of particles separate from each other, defining at least two regions within the resin; positioning a stage relative to the build surface so as to define a layer increment in the resin; selectively curing the resin using an radiant energy applied in a specific pattern so as to define the geometry of a cross-sectional layer of the component; moving the build surface and the stage relatively apart so as to separate the component from the build surface; repeating at least the steps of positioning and selectively curing for a plurality of layers, until the component is complete.

Abstract: An additively manufactured component and a method for manufacturing the same are provided. The additively manufactured component includes a cross sectional layer having a surface surrounding the cross sectional layer. The cross sectional layer is formed by moving a focal point of an energy source over a bed of additive material. A surface irregularity is formed on the surface by manipulating the energy level of the energy source. The surface may include a datum feature positioned at a predetermined location relative to the surface irregularity and the surface irregularity may be greater than a surface roughness of the surface but less than one millimeter.

Abstract: A neonatal care system includes a platform for supporting an infant, at least one load cell configured to sense a weight of the infant supported on the platform, and an inclinometer configured to measure an angle of the platform. A controller is configured to determine an infant weight based on the sensed weight and the measured angle of the platform.

Abstract: A wireless patient monitor comprises a generic activator module having a universal connection port that connects with any one of multiple sensor devices, a battery, and a radio transmitter wirelessly connected to a host device. The generic activator module connects to any one of multiple sensor devices via the universal connection port to provide power from the battery to the sensor device and to receive digital physiological data from the sensor device. The radio transmitter transmits the digital physiological data received from the sensor device to a host device.

Abstract: Methods, apparatus, and articles of manufacture to provide improved engine load models are disclosed. An example apparatus includes a model generator to generate an engine load model for an engine using flight information, weather information, and manifest information to predict a load on the engine from an engine subsystem utilization modeled for a flight. The example model generator is to incorporate the engine load model into an engine model, the engine model representing engine behavior for the flight. The example model generator is to determine a first measure of thrust from the engine and a second measure of fuel flow to the engine using the engine model with the engine load model, the engine load model to modify engine behavior by the predicted load on the engine from the engine subsystem utilization.

Abstract: A system includes a sensor comprising a sensor bonding layer disposed on a surface of the sensor, wherein the sensor bonding layer is a metallic alloy. An inlay includes a planar outer surface, wherein the inlay may be disposed on a curved surface of a structure. A structure bonding layer may be disposed on the planar outer surface of the inlay, wherein the structure bonding layer is a metallic alloy. The sensor bonding layer is coupled to the structure bonding layer via a metallic joint, and the sensor is configured to sense data of the structure through the metallic joint, the structure bonding layer, and the sensor bonding layer. The inlay comprises at least one of a modulus of elasticity, a shape, a thickness, and a size configured to reduce strain transmitted to the sensor.

Abstract: A gas turbine engine guide vane heat exchanger has guide vane heat exchanger including electroformed fluid channels in electroformed heat exchanger tubes or a heat exchanger core disposed within airfoil. Non-flammable heat conducting liquid or non-metallic foam may fill space between tubes or core and airfoil. Fluid circuit may include channels within electroformed heat exchanger tubes or the heat exchanger core and extend from inlet manifold to outlet manifold for directing fluid or oil through channels and include fluid or oil supply inlet connected to inlet manifold for receiving the fluid or oil flowed into inlet manifold and a fluid or oil supply outlet connected to fluid or oil supply outlet for discharging fluid or oil flowed out of fluid or oil outlet manifold. Heat exchanger tubes or heat exchanger core, inlet manifold, outlet manifold, supply inlet and supply outlet may be integrally and monolithically electroformed together.

Abstract: An anesthesia vaporizer system includes a vaporizer reservoir forming a sump chamber that contains liquid anesthetic agent and a fill chamber isolated from the sump chamber configured to receive liquid anesthetic agent from a refill container. A piston is in the sump chamber configured to maintain a constant force on the liquid anesthetic agent in the sump chamber, and a transfer valve is configured to permit the liquid anesthetic agent to flow from the fill chamber to the sump chamber. The vaporizer reservoir has an outlet port that delivers the liquid anesthetic agent from the sump chamber to a vaporizing system that vaporizes the liquid anesthetic agent for delivery to a patient.

Abstract: A method of making a component of an electrical machine is provided. An additive manufacturing process is used to manufacture a part, including applying beams of energy to a successive plurality of ferromagnetic material particles and fusing them together to form a ring or segment of a ring with an axis, a solid portion, and laminas that extend from the solid portion in a radial or axial direction.

Abstract: The rotor for an electrical machine with a non-through shaft intended to drive a transmission line comprises two half-shafts enclosing a cylindrical magnetic mass. The magnetic mass comprises at least two adjacent identical cells, the cells being configured to prevent the propagation of metadamping in the rotor over a range of excitation frequencies of the transmission line, the rotation frequency range of the transmission line being hypercritical.

Abstract: A non-invasive blood pressure monitoring device includes an inflatable blood pressure cuff, a pump device for pressurizing the cuff, a pressure sensor to monitor blood pressure as physiological parameter, and an electrically actuated, normally-open solenoid valve configured to maintain a cuff pressure. A control unit configured to regulate a valve hold value for holding the normally-open solenoid valve at a desired closed position, wherein the valve hold value is at least one of a voltage value and a current value for controlling actuation of the normally-open solenoid valve. At least one inertial sensor configured to detect and transmit motion signals representative of external motions applied to the portable medical device, wherein the control unit is configured to regulate the valve hold value as a function of the motion signals of the at least one inertial sensor to maintain the normally-open solenoid valve in the closed position.

Abstract: A drive circuit comprising a DC bus configured to supply power to a load, a first fuel cell coupled to the DC bus and configured to provide a first power output to the DC bus, and a second fuel cell coupled to the DC bus and configured to provide a second power output to the DC bus supplemental to the first fuel cell. The drive circuit further includes an energy storage device coupled to the DC bus and configured to receive energy from the DC bus when a combined output of the first and second fuel cells is greater than a power demand from a load, and provide energy to the DC bus when the combined output of the first and second fuel cells is less than the power demand from the load.

Abstract: A method of monitoring depth of muscle relaxation of a patient includes determining a sedative drug effect of one or more sedative drugs on a patient based on at least one of drug delivery information and measured nervous system information. The sedative drug effect is then compared to a sedation criterion and, if the sedative drug effect fulfills the sedation criterion, then a neuromuscular transmission (NMT) monitor is controlled to apply a series of stimulation to a nerve of a patient and muscle responses of the patient are measured to obtain an NMT baseline. A neuromuscular blocking agent (NMBA) notice is then generated on a user interface after obtaining the NMT baseline.

Abstract: A method of processing ECG data includes generating a first feature set with a trained neural network using ECG data and processing a patient's ECG data using a criteria-based algorithm to generate a second feature set. The patient's ECG data is then clustered into a number of clusters based on the first feature set and the second feature set to generate clustered ECG data. The clustered ECG data is presented to a user via a user interface, and user input is received from the user via the user interface regarding the clustered ECG data. A feature vector is defined based on the user input and the feature vector is applied to at least a portion of the patient's ECG data to generate revised clustered ECG data. The revised clustered ECG data is then presented to the user via the user interface.

Abstract: A T-piece for controlling ventilation support to a patient includes a t-shaped body having a gas source connection port configured to receive a gas flow from a gas source, an interface connection port configured to connect to a patient interface device, and a positive end-expiratory pressure (PEEP) control port. A PEEP adjuster path is connected to the PEEP control port, the PEEP adjuster path having a bypass hole to allow gas to exit the T-piece and configured such that when the bypass hole is closed substantially all gas received at the gas source connection port is directed to the patient, and when the bypass hole is open, at least a portion of the gas received at the gas source connection port exits through the bypass hole to maintain PEEP to the patient. The T-piece is configured such that the bypass hole can be closed to deliver peak inspiratory pressure (PIP).

Abstract: A ring for shaft bearing of a marine vehicle drive unit has an annular body and a cylindrical active part intended to provide a sliding contact function with another ring at the bearing level. The cylindrical part is segmented into several cylindrical surfaces, each cylindrical surface being attached in a removable manner to the annular body.

Abstract: A method and system for obtaining and analyzing ECG waveforms from a patient is disclosed. Initially, a recommendation for obtaining an ECG waveform from a patient is issued, typically from a cardiologist. An ECG recording device is used to obtain ECG data from the patient. The recording device generates patient identification information, time and date information and an initial analysis that are included in a log delivered along with the ECG data to an analysis server. The analysis server generates a recommended action for the patient, which is delivered to the recording device while the patient is still present at the recording device. The recording device can then carry out the recommended action and provide the results for analysis by the cardiologist. The analysis server can utilize artificial intelligence/machine learning to generate the recommended action for the patient without having to involve the cardiologist, thereby reducing the number of visits for the treatment of the patient.

Abstract: The disclosure generally relates to a failure indicator for providing an indicator that a failure has occurred on a capacitor unit of a capacitor bank. In some embodiments, the failure indicator may include a magnetic element, and the failure indicator may be configured to move from a first orientation to a second orientation based on a mechanical or electromagnetic impulse in the capacitor unit resulting from a failure of the first capacitor unit. In some embodiments, the magnetic element may maintain the first failure indicator in the second orientation to indicate the failure of the first capacitor unit.

Abstract: A system for reheating a power generation system including a boiler and a mixer fluidly coupled to the boiler, a turbine first section operable to receive steam from the boiler at a first temperature. The turbine supplies steam at a second temperature to the boiler or mixer. The system also includes a first flow control valve operable to control a flow of steam through the turbine, and a sensor the sensor operable to monitor at least one operating characteristic in the boiler system. The system further includes a control unit configured to receive the monitored operating characteristic and control at least the first flow control valve, to control the amount of steam directed through the turbine.

Abstract: A system for warming a power generation system including a boiler and a mixer fluidly coupled to the boiler, a turbine first section operable to receive steam from the boiler at a first temperature. The turbine supplies steam at a second temperature to a first heat exchanger operably connected to receive the heated steam at the second temperature from the output of at least the first section of the turbine and transfer heat to at least one of water and steam in the boiler or the mixer, feedwater for the boiler, and a thermal energy storage system. The system further includes a control unit configured to receive the monitored operating characteristic and control the amount of steam directed through the turbine.

Abstract: A system for inerting a biomass feed assembly the system including a combustion chamber operably connected to the biomass feed assembly to receive a biofuel, the combustion chamber operable to combust the biofuel and generate a flue gas therefrom and a conduit operably coupled to at least one of the combustion chamber and an inert gas source, and the biomass feed assembly, the conduit operable to carry a gas to the biomass feed assembly. The gas sweeps dust generated in at least the gravity chute assembly toward the combustion chamber and the gas maintains an oxygen partial pressure or concentration in the at least a portion of the biomass feed assembly below a selected threshold sufficient to suppress ignition.

Abstract: A server device that includes server elements that receive a modification request to modify a respective access permission level, designated to a client device for a target server element, from a baseline permission level among a permission hierarchy of access permission levels to a different permission level among the permission hierarchy. The server device sends a nonce associated with the modification request to the client device, and receives a signed nonce or nonce signature generated by the client device based on the nonce and a client private key of the client device. In response to determining an authenticity of the signed nonce or nonce signature based on a client public key that is associated with the client private key and trusted by the server device, the server device modifies the respective access permission level designated to the client device for the target server element to the requested permission level.

Abstract: A method (36) of short-circuiting a faulty submodule (12, 12?, 12?) for a voltage-source power converter (8) is disclosed. The submodule (12, 12?, 12?) is based on a full-bridge, asymmetric full-bridge or half-bridge circuit design having power semiconductor switches (T1-T4) with anti-parallel freewheeling diodes (D1-D4) and optionally non-controllable semiconductor valves (D1?-D4?). The method 36 includes identifying a faulty semiconductor device and determining a failure mode selected from a short-circuit failure mode and an open circuit failure mode.

Abstract: A system for identifying healthcare assets includes a set of tags configured to communicate with one another, the set of tags including a root tag configured to transmit an asset identifier identifying the healthcare asset and a plurality of component tags each configured to transmit a component identifier identifying a component of the healthcare asset. A receiver system is configured to receive the asset identifier and the plurality of component identifiers from the set of tags and to automatically generate a bill of materials (BOM) for the healthcare asset based on the asset identifier and the plurality of component identifiers.

Abstract: There are provided systems and methods for prognostic analytics of an asset. For example, there is provided a system for monitoring a reliability of a component of an asset. The system includes a processor and a memory comprising instructions that, when executed by the processor, cause it to perform certain operations. These operations may include receiving input data, which can include performance data relating to the component, configuration data relating to the component, and statistical data relating to a plurality of assets. The operations can further include providing a pre-emptive recommendation for the component based on the input data.

Abstract: According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter.

Abstract: A nozzle tip for a pulverized solid fuel pipe nozzle of a pulverized solid fuel-fired furnace is provided. The nozzle tip includes a primary shroud having an inlet end and an outlet end, and an outlet at the outlet end for the passage of a pulverized solid fuel into the furnace. An area of the outlet is selectively adjustable to vary an exit velocity of the pulverized solid fuel from the nozzle tip.

Abstract: Disclosed herein is a cell harvesting instrument suitable for concentrating cells from a source suspension of cells and/or washing said cells, the instrument comprising: a housing for accommodating mechanical elements including at least one fluid pump, at least one valve; and a processing kit removably insertable into the housing, said kit including a generally flat frame having or supporting plural sealed fluid paths arranged in a generally flat plane and such that fluids in the paths do not contact said mechanical elements, wherein at least portions of the fluid paths comprise flexible tubes, the outer surfaces of which are manipulateable by the or each fluid pump, to provide fluid flow in one or more of the paths and/or by the or each valve to restrict fluid flow in one or more of the paths. In an embodiment, the kit comprises also a fluid processing reservoir and a filter suitable for separating cells from fluid in said paths.

Abstract: An enclosure for a pulverizer system includes a generally cylindrical body forming an internal cavity having a central axis, a cover positioned above the cylindrical body, and a floor positioned within the internal cavity of the cylindrical body, opposite the cover, the floor having a surface extending from a point nearest the central axis to an inner sidewall of the cylindrical body. The surface of the floor has a substantially constant radius of curvature.