Abstract: Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising an N2-phosphinyl amidine chromium compound complex, an N2-phosphinyl formamidine chromium compound complex, an N2-phosphinyl guanidine chromium compound complex, or any combination thereof, and ii) an aluminoxane. Ethylene can be contacted with an organic reaction medium to form an ethylene feedstock mixture prior to contact with the catalyst system. The ethylene feedstock mixture can be contacted with the catalyst system inside or outside of the reaction zone.

Abstract: Light sources are incorporated into a guidewire for enabling the ability to render light therapy be added to catheters that do not have that capability. In one exemplary embodiment, a solid guidewire includes a conductive core, and light sources are added to compartments formed in a distal end of the guidewire. In another exemplary embodiment, a light source array is included in a distal end of a hollow guidewire. A plurality of openings are formed into the walls of the hollow guidewire surrounding the array, enabling light to pass through the openings. Conductors extend from the array though the hollow center of the guidewire, to a proximal end of the hollow guidewire. The hollow guidewire can be coated with a conductive material, so that the coating on the guidewire serves as a conductor.

Abstract: Implementations relate to providing, in response to a query, machine learning model output that is based on output from a trained machine learning model. The machine learning model output can include a predicted answer to the query, that is predicted based on the trained machine learning model. The machine learning model output can additionally or alternatively include an interactive interface for the trained machine learning model. Some implementations relate to generating a trained machine learning model “on the fly” based on a search query. Some implementations additionally or alternatively relate to storing, in a search index, an association of a machine learning model with a plurality of content items from resource(s) on which the machine learning model was trained.

Abstract: An imaging system is provided that includes at least one detector configured to acquire imaging information, a processing unit, and a display unit. The processing unit is operably coupled to the at least one detector, and is configured to reconstruct an image using the imaging information. The image is organized into voxels having non-uniform dimensions. The processing unit is configured to perform a penalized likelihood (PL) image reconstruction using the imaging information. The PL image reconstruction includes a penalty function. Performing the penalty function includes interpolating a voxel size in at least one dimension from an original size to an interpolated size before determining a penalty function, determining the penalty function using the interpolated size to provide an initial penalty, interpolating the initial penalty to the original size to provide a modified penalty, and applying the modified penalty in the PL image reconstruction.

Abstract: An inkjet printing system, including an inlet in a print head to receive ink from an ink supply, a plurality of nozzles to eject ink in the print head, an ink pressure sensor disposed in an ink path, the ink pressure sensor configured to determine an ink pressure of the ink in the print head and output a signal indicating the ink pressure, and a controller in the print head configured to receive and process the signal indicating the ink pressure from the ink pressure sensor. The inkjet printing system may also include a memory to store an ink pressure and time profile. The controller may also output a signal to stop ejecting ink from the plurality of nozzles when the ink pressure is either below a negative threshold or above a positive threshold.

Abstract: An inkjet printing system, including an inlet in a print head to receive ink from an ink supply, a plurality of nozzles to eject ink in the print head, an ink pressure sensor disposed in an ink path, the ink pressure sensor configured to determine an ink pressure of the ink in the print head and output a signal indicating the ink pressure, and a controller in the print head configured to receive and process the signal indicating the ink pressure from the ink pressure sensor. The inkjet printing system may also include a memory to store an ink pressure and time profile. The controller may also output a signal to stop ejecting ink from the plurality of nozzles when the ink pressure is either below a negative threshold or above a positive threshold.

Abstract: Methods and systems are provided for scatter correction in Positron Emission Tomography (PET) imaging. In one embodiment, a method comprises performing an emission scan to acquire emission data, identifying outliers in a tail region of the emission data, discarding a portion of the outliers from the emission data, calculating a linear fit to remaining emission data in the tail region, and correcting the emission data based on the linear fit. In this way, scatter coincidence events can be eliminated even if the emission data is spatially misaligned with transmission data.

Abstract: A seat comprising a base pan defining cutouts positioned under a seating area for a seated user, a resilient membrane over the cutouts, a cushion on the base pan, at least one air cell pad on the cushion at the seating area and a cover.

Abstract: A multimedia presentation system for presenting multimedia data comprising a demultiplexing unit and at least one processing unit. The demultiplexing unit demultiplexes a plurality of streams of data. At least one presentation processing unit provides the plurality of stream of data for presentation according to predetermined timing and detecting an end of any one of the plurality of streams of data.

Abstract: An electronic medical record employs a hybrid search engine which can perform structured queries for comprehensive search results and text searches for rapid identification of relevant information. A standard structured database of medical data is rendered accessible to text searches by generating pseudo-documents from the database that can then be subjected to standard information retrieval pre-processing.

Abstract: Disclosed herein are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising a heteroatomic ligand chromium compound complex of the type disclosed herein, and ii) an aluminoxane. Ethylene can be contacted with an organic reaction medium to form an ethylene feedstock mixture prior to contact with the catalyst system. The ethylene feedstock mixture can be contacted with the catalyst system inside or outside of the reaction zone.

Abstract: Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising an N2-phosphinyl amidine chromium compound complex, an N2-phosphinyl formamidine chromium compound complex, an N2-phosphinyl guanidine chromium compound complex, or any combination thereof, and ii) an aluminoxane. Ethylene can be contacted with an organic reaction medium to form an ethylene feedstock mixture prior to contact with the catalyst system. The ethylene feedstock mixture can be contacted with the catalyst system inside or outside of the reaction zone.

Abstract: A fluid sensor has a first electrode, a second electrode, a housing containing the first and second electrodes, such that the electrodes extend from the housing, exposed metal between the first and second electrodes, and a drive signal electrically connected to the second electrode, such that when fluid is present in the reservoir, either the first electrode senses the presence of the fluid, or the drive signal senses presence of the fluid. A fluid sensor has a first electrode, a second electrode, a housing containing the first and second electrodes, a drive signal electrically connected to the second electrode, and sensing circuitry to measure a current from the second electrode to indicate a fluid level.

Abstract: A polymorphic surface may be provided by applying at least one magnetic field across a plurality of movable surface contour elements and selectively passing a current through the magnetic field(s) adjacent selected surface contour elements, with the current being perpendicular to the magnetic field. The current interacts with the magnetic field to generate a Lorentz force driving guided substantially linear motion of the respective surface contour element(s). The surface contour elements may be individually moveable and individually selectable for application of current to generate movement. The surface contour elements may be supported in position after removing the current. The current applied across each selected surface contour element may be varied to control the amount of guided substantially linear motion.

Abstract: A method and apparatus for monitoring a living animal is disclosed. The apparatus includes a flexible carrier strip having an undersurface for adhering to an epidermis of the living animal. The apparatus also includes a muscle function sensor disposed on the flexible carrier strip and operable to generate a muscle signal indicative of functioning of a muscle underlying the flexible carrier strip. The apparatus further includes a transducer disposed on the flexible carrier strip operable to generate a stimulus signal in response to receiving mechanical stimuli, a processor circuit disposed on the flexible carrier strip.

Abstract: A computer-implemented method for penalized-likelihood reconstruction of a Positron Emission Tomography (PET) image includes generating a regularization function in which a smoothing parameter is modulated by one or more data-independent spatially variable modulation factors to compensate for sensitivity variations in a PET voxel dataset, and reconstructing the PET image from the PET emission dataset using the regularization function.

Abstract: A polymorphic surface may be provided by applying at least one magnetic field across a plurality of movable surface contour elements and selectively passing a current through the magnetic field(s) adjacent selected surface contour elements, with the current being perpendicular to the magnetic field. The current interacts with the magnetic field to generate a Lorentz force driving guided substantially linear motion of the respective surface contour element(s). The surface contour elements may be individually moveable and individually selectable for application of current to generate movement. The surface contour elements may be supported in position after removing the current. The current applied across each selected surface contour element may be varied to control the amount of guided substantially linear motion.

Abstract: Systems and methods for reporting a position of an air-over-hydraulic road treatment element use pneumatically activated switches triggered by pilot air for moving the road treatment element. Switch activation electrical signals are used to determine whether the road treatment element is in an engaged configuration or a disengaged configuration. If the switch activation electrical signals indicate the engaged configuration, an engaged configuration electric signal can be maintained until the switch activation electrical signals indicate the disengaged configuration. Conversely, if the switch activation electrical signals indicate the disengaged configuration, a disengaged configuration electric signal can be maintained until the switch activation electrical signals indicate the engaged configuration.

Abstract: Garment systems include complete, independently wearable garments like gloves, socks, scarves, earmuffs, headbands, hats and the like having attached thereto one or more single-use, air-activated exothermic heating packs sealed in a substantially airtight envelope, which can be opened when it is time for use. Thus, according to embodiments described herein, a user can simply open a package and put on the garment(s), and the exothermic heating pack(s) will be automatically activated by exposure to air, without the user having to place a heating pack inside a special pocket or the garment or fit a heating pack to their body before putting on the garment. The garments can be discarded after use for disposal or recycling.