Abstract: Apparatus and methods for bias switching of power amplifiers are provided herein. In certain configurations, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal and a bias control circuit that biases the power amplifier. The power amplifier includes an amplification transistor that receives the RF signal at an input, and a first bias network and a second bias network each connected to the input. The bias control circuit includes a first switch, a first reference current source that provides the first reference current to the first bias network through the first switch, a second switch, and a second reference current source that provides the second reference current to the second bias network through the second switch.

Abstract: A system is comprised of one or more processors coupled to memory. The one or more processors are configured to receive image data based on an image captured using a camera of a vehicle and to utilize the image data as a basis of an input to a trained machine learning model to at least in part identify a distance of an object from the vehicle. The trained machine learning model has been trained using a training image and a correlated output of an emitting distance sensor.

Abstract: A reciprocating pump includes a fluid end having a body defining a plunger bore that engages a plunger sleeve with a threaded interface, where the plunger sleeve defines throughbore configured to receive a plunger operatively reciprocating within the plunger bore during operation of the reciprocating pump. A packing assembly including a plurality of stacked annular seals is disposed between the plunger sleeve and the plunger. A packing nut having a threaded profile for engagement with a threaded surface of the plunger bore asserts a load against the packing assembly to ensure a positive engagement with the plunger.

Abstract: A mounting bracket for electrical boxes that can include a mounting body with a central opening, a front face, a first and second set of keyhole features, a first bendable tab located adjacent a first side of the central opening, and a second bendable tab located adjacent a second side of the central opening. The first bendable tab can be bendable rearward away from the front face of the mounting body to engage an exterior surface of a side wall of the first electrical box and thereby secure the first fasteners within the first set of keyhole features. The second bendable tab can be bendable rearward away from the front face of the mounting body to engage an interior surface of a side wall of the second electrical box and thereby secure the second fasteners within the second set of keyhole features.

Abstract: Directional drilling technologies and methodologies involve/utilize a reamer embodying a pressure vessel configured for directing flows of fresh mud through the reamer/pressure vessel and toward an entry side of a bore hole being drilled by the reamer, facilitating single ream pass directional drilling of bore holes, and preventing the reamer from deviating from the path of the pilot hole.

Abstract: Method and system for the extraction of oils from a biomass with a liquid carbon dioxide using cosolvent. The system and method can be used to extract cannabinoids from cannabis biomass by cryogenically freezing the biomass and exposing the cannabis biomass to sub-cooled liquid carbon dioxide and capturing a first high-terpene extract fraction, and then exposing the cannabis biomass with a mixture of superfluid carbon dioxide and a cosolvent to capture a high cannabinoid second fraction.

Abstract: A device for producing an elongate ingot of clear ice comprises a housing comprising at least one flume surface wall that defines at least one elongate trough; at least one fluid intake disposed to provide a flow of liquid into the at least one elongate trough; at least one drain disposed to drain liquid from at least one elongate trough; wherein the at least a portion of the at least one flume surface wall is in thermal communication with a cooling source; and wherein the at least one fluid intake and the at least one drain are adapted to provide a substantially constant flow of fluid to the at least one elongate trough during a freezing operation of the device. The cooling source can be an internal cooling cavity.

Abstract: Disclosed herein is a method of alleviating symptoms of ocular surface discomfort, the method comprising: topically applying a cold slurry adjacent to a corneal limbus of an eye of a patient, wherein the cold slurry comprises water and a freezing point depressant, wherein the topical application of the cold slurry is configured to cause a degree of numbing of a cornea of the eye for a period of time, and wherein an ocular sensation of the eye is restored following the period of time.

Abstract: Systems and methods are provided for intelligent driving monitoring systems, advanced driver assistance systems and autonomous driving systems, and providing one-click driver image labeling to facilitate the assignment of drive time to a driver. Various aspects of the driver and/or passengers may be determined, which may include a driver identifier previously associated with the driver, whether the driver is wearing a facial covering, whether an image of the driver is partially occluded, whether the driver is facing in the direction of the camera, and whether an image of the driver is expected to be easily recognizable to a person tasked with assigning representative driver images to driver identifiers. These determinations may be used to improve the efficacy and ease-of-use of a visual login system.

Abstract: Improvements in a battery optimization and restoration device that uses a means of varying the regulator voltage as a function of time and discharge event timing and depth in order to establish a consistent power level for the charging of the capacitor. The device models the power supply regulation voltage as a first order factor as a function of time. The regulation voltage is modeled as a function of time so as to maintain an acceptable charging current at all times by charging a large capacitive load which is periodically discharged in a rapid pulse-like manner requires a modeled regulation voltage that is synchronized to the discharge frequency of the capacitor. The modeled charging is a function of the discharge depth and the charging height in initial capacitor voltage before the discharge and the final capacitor voltage after the discharge.

Abstract: Apparatus and methods for bias switching of power amplifiers are provided herein. In certain configurations, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, a power management circuit that controls a voltage level of a supply voltage of the power amplifier, and a bias control circuit that biases the power amplifier. The power management circuit is operable in multiple supply control modes, such as an average power tracking (APT) mode and an envelope tracking (ET) mode. The bias control circuit is configured to switch a bias of the power amplifier based on the supply control mode of the power management circuit.

Abstract: This disclosure addresses an exercise device adapted to enable the user to perform a salmon ladder exercise. The ladder includes a frame with at least one pair of support protrusions that receive an exercise bar. A bearing surface that receives the shaft of a catch array rotatably mounted in the frame. The device further includes a braking mechanism that applies a variable suppression force to the catch array shaft, the variable suppression adjusting the force required to rotate the catch array shaft in the bearing surface.

Abstract: There is provided a multipole magnet for deflecting a beam of charged particles. The multipole magnet comprises a plurality of ferromagnetic poles and a plurality of permanent magnet assemblies to supply a magnetomotive force to the ferromagnetic poles. At least one of the permanent magnet assemblies has a plurality of discrete permanent magnet positions and a plurality of permanent magnets each fixed in one of the permanent magnet positions.

Abstract: This disclosure describes compounds of Formula (I), stereoisomers, side compounds thereof, pharmaceutical compositions and methods of manufacturing such compounds, using silylation reagents and producing compositions and products made using such methods. More particularly, this disclosure describes manufacture of trofinetide and side products, compositions and products containing such compounds, for pharmaceutical uses to treat neurodegenerative or neurodevelopmental disorders.

Abstract: Aspects of the present disclosure are directed to virtual interaction modes for social and group communication. Additional aspects of the present disclosure are directed to automated controls for connecting a trigger performed in an artificial reality environment to an action on a personal computing device. Further aspects of the present disclosure are directed to providing versions of person virtual objects in an artificial reality environment and contextual breakpoints to switch between them. Yet further aspects of the present disclosure are directed to extending a mouse for artificial reality environment input.

Abstract: Aspects of this disclosure relate to detecting power associated with an individual carrier of a carrier aggregated signal. In an embodiment, an aggregated carrier including at least a first carrier and a second carrier is provided. An indication of power of the first carrier of the aggregated carrier is detected. Separately from detecting the indication of power of the first carrier, an indication of power of the second carrier of the aggregated carrier is detected. The power associated with a radio frequency (RF) signal provided to an RF source associated with the first carrier can be adjusted based on the indication of power of the first carrier.

Abstract: Systems with indium application to heat transfer surfaces and related methods are described. A system includes a chassis, arranged inside a housing, having at least one slot for receiving a blade. The blade, arranged in a slot of the chassis, includes a first circuit board having a plurality of components mounted on a substrate. The blade further includes a first heat spreader comprising a metal. The first heat spreader including metal is arranged to transfer heat from the first circuit board to a cooling system via a first interface between a first surface of the first heat spreader and a second surface of the chassis, and where indium is permanently bonded to either the first surface of the first heat spreader, or the second surface of the chassis, or both the first surface of the first heat spreader and the second surface of the chassis.

Abstract: In acoustic well logging, for each inversion depths of a well at which logging of data occurs, acoustic log signals representative of waveforms received at acoustic receivers are processed in a frequency domain to derive field dispersion curve(s). A neural net is operated to generate formation shear slowness value(s) from the curve(s), and resulting signal(s) indicative of shear slowness values are saved, transmitted, plotted, printed or processed. An apparatus for carrying out the method includes a logging tool having at least one activatable acoustic wave source; spaced and acoustically isolated therefrom in the logging tool an array of acoustic detectors that on the detection of acoustic wave energy generate electrical or electronic log signal(s) characteristic of acoustic energy waves detected by the acoustic detector(s); and at least one processing device associated with or forming part of the logging tool for processing the log signal(s).

Abstract: The absorbance or emission wavelength of composite materials comprising a transition metal doped shell disposed over a rare earth doped core and a functionalizable group on the surface of the transition metal doped shell can change upon subjection to a carboxylic acid. This method of changing the absorbance or emission wavelength of a composite material can be used to identify counterfeit currency using an ink comprising a composite material.