Abstract: A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge. The second subgasket supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. An energy attenuating bead extends about the bipolar plate spaced from the seal bead.

Abstract: A radar system includes a radio frequency (RF) section that is controllable to focus operation in one of a plurality of fields of view (FOVs) and a control section configured to identify a side of the vehicle in which the radar system is installed and direct the RF section to focus transmission and reception in one of a first or a second FOV based on the side of the side of the vehicle in which the radar system is installed. A method includes: transmitting RF energy and listening for a reflection from a predetermined target mounted on one side of a vehicle; determining a whether a reflection has been detected; and directing the RF section to focus operations to the FOV that is predetermined for use for a radar system mounted on a same side of the vehicle as the predetermined target when a reflection has been detected.

Abstract: Systems and methods are described for managing access control. An example method may comprise receiving an address associated with a user device. An identifier may be determined based on the address. Based on the identifier, the user device may be determined to be associated with a trusted user. Based on the determination that the user device is associated with the trusted user, the user device may be granted access to a trusted network service.

Abstract: The disclosure relates generally to gamma polyglutamated aminopterin compositions, including delivery vehicles such as liposomes containing the gamma polyglutamated aminopterin, and methods of making and using the gamma polyglutamated aminopterin compositions to treat hyperproliferative disorders (e.g., cancer) and disorders of the immune system (e.g., inflammation and autoimmune diseases such as rheumatoid arthritis).

Abstract: A flexible digital detector array apparatus including a control system including a block control module, a gate control module, and at least one data module. The block control module and the gate control module can be arranged to execute a multiplexing operation. The apparatus can also include a flexible substrate coupled to the control system at an edge of the flexible substrate via a plurality of connectors. The flexible substrate can include a switching area including a plurality of switching pixels arranged within a plurality of blocks. Each switching pixel can be communicatively coupled to the block control module and the gate control module. The apparatus can also include a sensing area including an array of sensing pixels. The array of sensing pixels can generate image data responsive to X-rays incident thereon and provide the image data to the plurality of data modules. Each switching pixel of the plurality of switching pixels can be arranged to control a read state of a portion of sensing pixels.

Abstract: Disclosed embodiments may include a method that includes scanning a machine-readable element, by a second user device, generated by a first user device and embedded with a tracking identifier and a product identifier and recognizing the link embedded in the machine-readable element. Responsive to recognizing the link, the method may include transmitting, by the second user device, a verification request to acquire the product to a server, wherein the verification request comprises the tracking identifier and product identifier. Responsive to receiving in-person status credentials at the second user device, the method may include rendering a description of the product on a display of the second user device, receiving a second user input confirming intent to acquire the product, and transmitting, to a server, instructions to acquire the product in response to receiving the first user input.

Abstract: A separator in a wellbore for separating liquid and gas in a petroleum production stream is described. The separator is formed by an outer tube defining an outer conduit extending from a lower end to an upper end of the outer tube. An inner tube is positioned concentrically within the outer tube, wherein the inner tube defines an inner conduit extending from a lower end to an upper end of the inner tube. The inner conduit includes a cap at its lower end and a plurality of openings connecting the outer conduit and the inner conduit. A helical auger extends between the inner tube and the outer tube, the helical auger defining a pathway between the outer tube and the inner tube such that the gas in the production stream passes through the openings in the inner tube while the fluid passes through the outer conduit to a pump.

Abstract: A merchant page in a browser may receive selection of a first financial institution. The merchant page may generate a uniform resource identifier (URI) directed to an application. At least a portion of the URI may be registered with the application and the first financial institution in a mobile operating system. Responsive to receiving selection of the URI, the mobile OS may launch the application, which may authenticate credentials for an account. The application may associate the user ID parameter and the session ID parameter with the account and receive a cryptogram from a contactless card. The application may receive, from a server, an indication specifying the server verified the cryptogram. The OS may launch the browser, which may refresh the page. The refreshed page may include a virtual card number (VCN) in a first form field. A transaction may be processed based on the VCN.

Abstract: A gyroscopic roll stabilizer includes an enclosure, a flywheel assembly, a bearing, a motor, and a bearing cooling circuit. The enclosure is mounted to a gimbal for rotation about a gimbal axis and configured to maintain a below-ambient pressure. The flywheel assembly includes a flywheel and flywheel shaft. The bearing rotatably mounts the flywheel assembly inside the enclosure for rotation about a flywheel axis. The bearing has an inner race and an outer race. The inner race is rotationally fixed relative to the flywheel shaft, and the outer race is held rotationally fixed relative to the enclosure. The motor is operative to rotate the flywheel assembly. The bearing cooling circuit is configured to transfer heat away from the bearing by recirculating coolant along a closed fluid pathway. The gyroscopic roll stabilizer is configured to transfer heat away from the inner and/or outer race of the bearing to the coolant.

Abstract: A method includes determining an operational condition associated with an unmanned aerial vehicle (UAV). The method includes, responsive to determining the operational condition, causing the UAV to perform a pre-flight check. The pre-flight check includes hovering the UAV above a takeoff location. The pre-flight check includes, while hovering the UAV, moving one or more controllable components of the UAV in accordance with a predetermined sequence of movements. The pre-flight check includes obtaining, by one or more sensors of the UAV, sensor data indicative of a flight response of the UAV to moving the one or more controllable components while hovering the UAV. The pre-flight check includes comparing the sensor data to expected sensor data associated with an expected flight response to the predetermined sequence of movements while hovering the UAV. The pre-flight check includes, based on comparing the sensor data to the expected sensor data, evaluating performance of the UAV.

Abstract: In some implementations, a device may retrieve information relating to a vehicle in a vehicle exchange, where the information relating to the vehicle is in a distributed database that is particular to the vehicle, and where the distributed database includes a plurality of inter-related records relating to the vehicle. The device may receive, from a user device, an indication of an exchange amount for the vehicle. The device may cause, based on the indication, a smart contract to be added to the distributed database, the smart contract indicating the exchange amount.

Abstract: Various embodiments relate to an electrochemical cell for removal of materials from water and methods of using the same. A method of removing phosphorus from water includes immersing an electrochemical cell in water including phosphorus to form treated water including a salt that includes the phosphorus. The electrochemical cell includes an anode including Mg, Al, Fe, Zn, or a combination thereof, a cathode including Cu, Ni, Fe, or a combination thereof. The method includes separating the salt including the phosphorus from the treated water, to form separated water having a lower phosphorus concentration than the water including phosphorus.

Abstract: A system implemented as computer programs on one or more computers in one or more locations that implements a computer vision model is described. The computer vision model includes a positional local self-attention layer that is configured to receive an input feature map and to generate an output feature map. For each input element in the input feature map, the positional local self-attention layer generates a respective output element for the output feature map by generating a memory block including neighboring input elements around the input element, generates a query vector using the input element and a query weight matrix, for each neighboring element in the memory block, performs positional local self-attention operations to generate a temporary output element, and generates the respective output element by summing temporary output elements of the neighboring elements in the memory block.

Abstract: A method of manufacturing flavorant particles includes melting a food grade wax and a flavorant into a molten wax; solidifying the molten wax; and grinding the solidified molten wax into a plurality of flavorant particles. Another method of manufacturing flavorant particles includes melting a food grade wax and a flavorant into a molten wax, the molten wax having a melting temperature between about 50° C. to about 70° C.; and spray-chilling the molten wax into at least one solid flavorant particle, the solid flavorant particle having a diameter of between about 0.1 mm to about 2.0 mm.

Abstract: Downhole centrifugal pumps and related components and methods may include diffusers housing impellers and a rotational shaft passing through the impellers to impart rotation to the impellers. Bearings are positioned within at least some of the diffusers to support the rotational shaft during the rotation of the impellers. Coupling pins may be positioned between and engage with the bearings and the at least some of the diffusers to at least partially secure each of the bearings to one of the at least some of the diffusers.

Abstract: Methods and apparatus for additive manufacture of an article corresponding with an energy transmissibility image. The article may include a contact lens or intraocular lens. The improvements are directed to repeated application of a monomer according to a pattern corresponding with the energy transmissibility image, such as grayscale image. The method may include intermittent pinning of deposited polymerizable mixture, partial cure, and final cure of the deposited polymerizable mixture. A pattern of multiple defined areas may be manufactured, with each area representing an amount of energy transmissibility associated with that area.

Abstract: A computer-implemented method for generating tasks in a task facilitation service based on website data includes receiving website data for a website from a browser executed on a user computing device associated with a user. The method also includes processing the website data to generate a task recommendation for a task of the user and transmitting an indication corresponding to the task recommendation. When the indication is received by a computing device, the computing device is enabled to approve the task recommendation to generate a task corresponding to the task recommendation in the task facilitation service.

Abstract: Examples described herein include systems and methods for performing distributed encryption across multiple devices. An example method can include a first device discovering a second device that shares a network. The device can identify data to be sent to a server and calculate a checksum for that data. The device can then split the data into multiple portions and send a portion to the second device, along with a certificate associated with the server for encrypting the data. The first device can encrypt the portion of data it retained. The first device can receive an encrypted version of the second portion of the data sent to the second device. The first device can merge these two portions and send the merged encrypted data to the server, along with the checksum value. The server can decrypt the data and confirm that it reflects the original set of data.