Abstract: This document relates to epoxy compositions containing a sliding-ring polymer (polyrotaxane) additive and a thermally-curable epoxy resin. The epoxy compositions exhibit increased flexural toughness and impact resistance as compared to the same epoxy composition that does not contain the additive. This document also relates to 3D-printed epoxy compositions containing a sliding-ring polymer (polyrotaxane) additive and a thermally-curable epoxy resin.

Abstract: This document relates to shape memory compositions containing a sliding-ring polymer (polyrotaxane) additive and a thermally-curable epoxy resin. The shape memory compositions are able to deform and reform in response to external stimuli. This document also relates to 3D-printed shape memory compositions containing a sliding-ring polymer (polyrotaxane) additive and a thermally-curable epoxy resin.

Abstract: Methods and systems for cementing a wellbore are described. The methods include forming a slurry including a cement-based matrix, water, a polymer-based additive, and a rheology modifying agent; mixing the slurry to form a printing ink; introducing the slurry and a printer into a wellbore; and forming a cement-based composite structure in the wellbore by printing a plurality of layers using the printing ink.

Abstract: This document relates to sealant compositions containing a sliding-ring polymer (polyrotaxane) additive and a polymeric matrix material. The sealant materials exhibit enhanced mechanical properties as compared to the same sealant composition that does not contain the additive. This document also relates to 3D-printed sealant compositions containing a sliding-ring polymer (polyrotaxane) additive and a polymeric matrix material.

Abstract: A device may receive, from a client device, a request with a single packet authorization (SPA) packet that includes data identifying a universal client device identifier. The device may generate a shared key associated with the universal client device identifier, and may determine that the SPA packet matches a comparison message authentication code (MAC) generated based on the shared key. The device may provide, based on the SPA packet matching the comparison MAC, a MAC associated with the SPA packet to the client device to enable the client device to validate the device.

Abstract: A rotary electric machine includes a rotor and a stator. The stator has windings and teeth extending radially from a stator core. Each tooth is separated from an adjacent tooth by a stator slot that opens to a radial stator-rotor airgap via a slot opening. The windings are positioned within each slot. Each stator tooth has a tooth tip with a surface profile configured to guide rotor flux away from areas of the windings proximate the respective slot opening. The tip surface profile may be a concave region, e.g., a dent/chamfer, and/or a convex region, e.g., a bump/bulge, and is formed in a distal end surface of the tip proximate the opening. The stator-rotor airgap is smaller at the convex region and larger at the concave region than elsewhere along the distal end surface. An electrical system includes the machine, a battery, and a power inverter module.

Abstract: A microservice node can store first raw satellite data, associated with a first satellite constellation, in a first electronic file in a first data store, can combine the first electronic file and one or more second electronic files, associated with the first satellite constellation, into a first compressed electronic file, and can store the first compressed electronic file in a second data store. The first raw satellite data and second raw satellite data can be received during a particular time period. The second data store can include a second compressed electronic file that includes third raw satellite data associated with a second satellite constellation. The microservice node can receive a request from a client device, can combine the first compressed electronic file and the second compressed electronic file into a third compressed electronic file based on the request, and can transmit the third compressed electronic file to the client device.

Abstract: A microservice node can include a network real-time kinematics (RTK) device to receive raw satellite data associated with a physical reference station via a first message in a first message queue, to receive static virtual location data associated with a static virtual reference station (VRS) agent, to generate corrections data for the static VRS agent based on the raw satellite data and the static virtual location data, and to transmit the corrections data to the static VRS agent. The microservice node can include the static VRS agent to publish the corrections data in a second message in a second message queue. The microservice node can include an adapter device to determine that the client device is located within a geographic area associated with the static VRS agent and to transmit the corrections data from the second message queue to the client device.

Abstract: A microservice node can store first raw satellite data, associated with a first satellite constellation, in a first electronic file in a first data store, can combine the first electronic file and one or more second electronic files, associated with the first satellite constellation, into a first compressed electronic file, and can store the first compressed electronic file in a second data store. The first raw satellite data and second raw satellite data can be received during a particular time period. The second data store can include a second compressed electronic file that includes third raw satellite data associated with a second satellite constellation. The microservice node can receive a request from a client device, can combine the first compressed electronic file and the second compressed electronic file into a third compressed electronic file based on the request, and can transmit the third compressed electronic file to the client device.

Abstract: A microservice node can include a network real-time kinematics (RTK) device to receive raw satellite data associated with a physical reference station via a first message in a first message queue, to receive static virtual location data associated with a static virtual reference station (VRS) agent, to generate corrections data for the static VRS agent based on the raw satellite data and the static virtual location data, and to transmit the corrections data to the static VRS agent. The microservice node can include the static VRS agent to publish the corrections data in a second message in a second message queue. The microservice node can include an adapter device to determine that the client device is located within a geographic area associated with the static VRS agent and to transmit the corrections data from the second message queue to the client device.

Abstract: Early detection of infectious respiratory diseases includes monitoring, during a predetermined time interval, electronic communications generated by network-connected portable devices, each portable device used by one of a plurality of users. The electronic communications are processed by extracting from each electronic communication biomarkers obtained by processing signals captured by the portable devices, the signals generated in response to sensor-detected respiratory activity of the portable device users. Clusters of users are generated based on the biomarkers and are conditioned based on pre-condition data extracted from the electronic communications, the pre-condition data corresponding to users determined to have pre-existing health conditions.

Abstract: A microservice node can receive a request for information identifying a corrected physical location of a client device. The request can include raw satellite data associated with the client device. The microservice node can convert the raw satellite data to a Radio Technical Commission for Maritime Services (RTCM) format. The microservice node can determine, based on converting the raw satellite data to the RTCM format, an estimated physical location of the client device. The microservice node can receive, based on transmitting a request to a network real-time kinematics (RTK) device, corrections data associated with the estimated physical location of the client device. The microservice node can determine, using a cloud RTK engine, the corrected physical location of the client device based on the estimated physical location and corrections data. The microservice node can transmit, to the client device, the information identifying the corrected physical location of the client device.

Abstract: The present disclosure is directed to poly-albumen polymer based edible film for fruit and vegetable preservation and methods for use thereof. This multifunctional bionanocomposite is comprised largely of egg-derived polymers and cellulose nanomaterials as a conformal coating onto fresh produce that slows down food decay by retarding ripening, dehydration, and microbial invasion. The coating is edible, washable, and made from readily available inexpensive or waste materials which makes it a promising economic alternative to commercially available fruit coatings and a solution to combat food wastage that is rampant in the world.

Abstract: An exemplary shift lever includes a mounting assembly, a flexible member coupled to the mounting assembly, and an interface coupled to the flexible member. The flexible member is resilient so as to provide a selected biasing force at a predetermined deformation angle, and flexible enough to elastically deform across a selected angular range. The mounting assembly is configured for connection with the input shaft of a transmission, and the interface is configured for connection with an output of a drive selector.

Abstract: Adaptive respiratory condition assessment can include capturing signals generated by sensors of a portable device positioned to sense a user's body. The sensors can generate the signals in response to sensor-detected movements of the user's body measured along multiple axes and corresponding to lung activity in the user's body during respiratory cycles. A preferred axis of measurement can be selected using signal processing performed by a signal processor embedded in the portable device. Waveforms generated from signals corresponding to signals generated in response to movements of the user's body measured along the preferred axis can be filtered for extracting biomarkers from the waveforms using the signal processor. The one or more biomarkers extracted correspond to the lung activity. Based on the biomarkers, a respiratory condition of the user can be determined. A notification based on the respiratory condition as determined can be generated and conveyed with the portable device.

Abstract: A microservice node can receive a request for information identifying a corrected physical location of a client device. The request can include raw satellite data associated with the client device. The microservice node can convert the raw satellite data to a Radio Technical Commission for Maritime Services (RTCM) format. The microservice node can determine, based on converting the raw satellite data to the RTCM format, an estimated physical location of the client device. The microservice node can receive, based on transmitting a request to a network real-time kinematics (RTK) device, corrections data associated with the estimated physical location of the client device. The microservice node can determine, using a cloud RTK engine, the corrected physical location of the client device based on the estimated physical location and corrections data. The microservice node can transmit, to the client device, the information identifying the corrected physical location of the client device.

Abstract: A device may receive, from a client device, a request with a single packet authorization (SPA) packet that includes data identifying a universal client device identifier. The device may generate a shared key associated with the universal client device identifier, and may determine that the SPA packet matches a comparison message authentication code (MAC) generated based on the shared key. The device may provide, based on the SPA packet matching the comparison MAC, a MAC associated with the SPA packet to the client device to enable the client device to validate the device.

Abstract: A computer device may include a memory storing instructions and processor configured to execute the instructions to receive a request for quantum random numbers from a client device. The processor may be further configured to establish a secure communication channel with the client device; obtain a stream of quantum random numbers from a quantum random number generator appliance; and provide a set of quantum random numbers from the obtained stream of quantum random numbers to the client device via the established secure communication channel.

Abstract: A permanent magnet electric machine (PM machine) includes a rotor with rotatable magnets and a stator defining an air gap with the rotor. An actuator rotates the rotatable magnets at predetermined operating points through an angular distance sufficient for changing magnetic pole orientations of the rotatable magnets, and thus modifies magnetic flux linkage with stator windings across the air gap. Fixed magnets may be arranged around a circumference of the rotor. The actuator may be actively or passively driven. Flux-shunting elements are optionally disposed in the rotor to further modify the flux linkage. A gear set connected to torque transfer elements may be driven by the actuator to rotate the rotatable magnets. A vehicle includes drive wheels, a transmission, and the PM machine. A method controls magnetic flux linkage in the PM machine noted above.