Abstract: Various implementations include headphone systems. In one implementation, a headband for a headphone system, includes: a continuous spring section sized to extend over a head of a user; an earcup mount coupled with an end of the continuous spring section, the continuous spring section and the earcup mount forming an arcuate joint, and the earcup mount configured to rotate relative to the continuous spring section at the arcuate joint; and a friction assembly spanning between the continuous spring section and the earcup mount, the friction assembly linearly arranged across the arcuate joint and configured to provide a substantially constant resistance to the rotation of the earcup mount relative to the continuous spring section, where the friction assembly includes a coupler having a primary axis extending across the arcuate joint, where the earcup mount rotates off-axis relative to the primary axis of the coupler.

Abstract: A radial flow oil shale retort can include a central heating fluid conduit having a permeable outer wall and an outer heating fluid annulus positioned about the central heating fluid conduit, the outer heating fluid annulus having a permeable inner wall. An annular body of comminuted oil shale can be between the permeable outer wall of the central heating fluid conduit and the permeable inner wall of the outer heating fluid annulus. A heating fluid supply can be connected to either the central heating fluid conduit or the outer heating fluid annulus to flow a heating fluid in a radial direction through the annular body of the comminuted oil shale.

Abstract: Various implementations include headphone systems. In one implementation a headband for a headphone system includes: a continuous spring section sized to extend over a head of a user; an earcup mount coupled with an end of the continuous spring section, forming an arcuate joint, where the earcup mount is configured to rotate relative to the continuous spring section at the arcuate joint; and a friction assembly spanning between the continuous spring section and the earcup mount, and configured to provide a substantially constant resistance to the rotation of the earcup mount relative to the continuous spring section, the friction assembly including a coupler having: an upper collar in the continuous spring section, the upper collar comprising a radial protrusion; and a lower collar in the earcup mount, the lower collar comprising a rotation stop for interacting with the radial protrusion in the upper collar.

Abstract: An earbud with a housing comprising a housing outer wall and an electromagnetic radiation-transmissive lens in the housing outer wall. The housing outer wall and the lens are co-molded.

Abstract: Various implementations include headphone systems. In one implementation a headband for a headphone system includes: a continuous spring section sized to extend over a head of a user; an earcup mount coupled with an end of the continuous spring section, forming an arcuate joint, where the earcup mount is configured to rotate relative to the continuous spring section at the arcuate joint; and a friction assembly spanning between the continuous spring section and the earcup mount, and configured to provide a substantially constant resistance to the rotation of the earcup mount relative to the continuous spring section, the friction assembly including a coupler having: an upper collar in the continuous spring section, the upper collar comprising a radial protrusion; and a lower collar in the earcup mount, the lower collar comprising a rotation stop for interacting with the radial protrusion in the upper collar.

Abstract: Systems and methods are directed to a headphone having a headphone cap and a headphone housing. The headphone cap is mechanically coupled to a printed circuit board (PCB) which has a first electrical connector and a second electrical connector. The headphone housing is configured to be mechanically coupled with the headphone cap, and comprises a battery having a third electrical connector and a fourth electrical connector. The third electrical connector is configured to form a first electrical connection with the first electrical connector as a result of the headphone housing being mechanically coupled with the headphone cap. The fourth electrical connector is configured to form a second electrical connection with the second electrical connector as a result of the headphone housing being mechanically coupled with the headphone cap. In mechanically coupling the headphone housing to the headphone cap, the battery is configured to be horizontally adjacent to the PCB.

Abstract: Various implementations include headphone systems. In one implementation a headband for a headphone system includes: a continuous spring section sized to extend over a head of a user; an earcup mount coupled with an end of the continuous spring section, where the continuous spring section and the earcup mount form an arcuate joint, and where the earcup mount is configured to rotate relative to the continuous spring section at the arcuate joint; and a friction assembly spanning between the continuous spring section and the earcup mount, the friction assembly linearly arranged across the arcuate joint and configured to provide a substantially constant resistance to the rotation of the earcup mount relative to the continuous spring section.

Abstract: An earbud with a housing comprising a housing outer wall and an electromagnetic radiation-transmissive lens in the housing outer wall. The housing outer wall and the lens are co-molded.

Abstract: Systems and methods are directed to a headphone having a headphone cap and a headphone housing. The headphone cap is mechanically coupled to a printed circuit board (PCB) which has a first electrical connector and a second electrical connector. The headphone housing is configured to be mechanically coupled with the headphone cap, and comprises a battery having a third electrical connector and a fourth electrical connector. The third electrical connector is configured to form a first electrical connection with the first electrical connector as a result of the headphone housing being mechanically coupled with the headphone cap. The fourth electrical connector is configured to form a second electrical connection with the second electrical connector as a result of the headphone housing being mechanically coupled with the headphone cap. In mechanically coupling the headphone housing to the headphone cap, the battery is configured to be horizontally adjacent to the PCB.

Abstract: A charging case for an earbud that has a pair of charging contacts that are configured to pass electrical power to an earbud battery. The charging case includes a raised pedestal, a pair of conductive charging pins protruding from the pedestal, and a docking magnet protruding from the pedestal proximate the charging pins.

Abstract: Systems and methods are directed to a wireless headphone comprising a wireless headphone cap comprising an antenna, and a printed circuit board configured to be directly mechanically connected to the wireless headphone cap at a fixed distance from the wireless headphone cap, and electrically connected to the antenna.

Abstract: A charging case for an earbud that has a pair of charging contacts that are configured to pass electrical power to an earbud battery. The charging case includes a raised pedestal, a pair of conductive charging pins protruding from the pedestal, and a docking magnet protruding from the pedestal proximate the charging pins.

Abstract: Emulsifier particles and methods for making and using same. The emulsifier particles can include an alkali metal salt or an alkaline earth metal salt of a carboxylic acid terminated fatty amine condensate, an alkali metal salt or an alkaline earth metal salt of a modified tall oil, or a blend of an alkali metal salt or an alkaline earth metal salt of a carboxylic acid terminated fatty amine condensate and an alkali metal salt or an alkaline earth metal salt of a modified tall oil. The emulsifier particles can have a BET specific surface area of about 0.3 m2/g to about 1 m2/g. The method for making the emulsifier particles can include reducing a size of an emulsifier solid via a mechanical attrition process to produce the emulsifier particles.

Abstract: An array of magnetic nanoparticle (MNP) spin torque oscillators (STOs) is described. Each STO is comprised of a uniform, chemically synthesized, spherical nanoparticle which couples to current flowing along a surface. The particles are organized into an array by a self-assembly technique with uniform spacing and close proximity to allow strong electrical and magnetic coupling between particles. The coupling of the nanoparticles to the surface current drives the oscillations by spin-torque, and for phase locking and data input. The uniform, spherical shape of the particles allows the oscillations to be achieved at low currents and with low power dissipation. The MNP-STOs may be used as a basis for massively parallel computing, microwave oscillators, or other applications.

Abstract: Various implementations include headphone systems. In one implementation a headband for a headphone system includes: a continuous spring section sized to extend over a head of a user; an earcup mount coupled with an end of the continuous spring section, where the continuous spring section and the earcup mount form an arcuate joint, and where the earcup mount is configured to rotate relative to the continuous spring section at the arcuate joint; and a friction assembly spanning between the continuous spring section and the earcup mount, the friction assembly linearly arranged across the arcuate joint and configured to provide a substantially constant resistance to the rotation of the earcup mount relative to the continuous spring section.

Abstract: The combination of an enzyme substrate and an enzyme capable of accelerating the modification of said substrate, provides a triggered release system which works especially well. The use of the enzyme-triggered release system can retain a rinse benefit agent during the wash stage and release it during the subsequent rinse stage.

Abstract: Biologically active compounds that can be used as photosensitizers for diagnostic and therapeutic applications, particularly for PDT of cancer, infections and other hyperproliferative diseases, fluorescence diagnosis and PDT treatment of a non-tumorous indication such as arthritis, inflammatory diseases, viral or bacterial infections, dermatological, opthamological or urological disorders are provided as well as providing methods to obtain them in pharmaceutical quality. One embodiment consists of a method to synthesize a porphyrin with a defined arrangement of meso-substituents and then converting this porphyrin system to a chlorin system by dihydroxylation or reduction, and if more than one isomer is formed separate them by chromatography either on normal or reversed phase silica. In another embodiment the substituents on the porphyrin are selected to direct the reduction or dihydroxylation to the chlorin so that a certain isomer is selectively formed.

Abstract: Systems, methods, tangible non-transitory computer-readable media, and devices for operating an autonomous vehicle are provided. For example, a vehicle computing system can receive sensor data and vehicle data from sensors of a vehicle. The sensor data can be associated with states of passengers in a passenger compartment of the vehicle. The vehicle data can be associated with states of the vehicle. The vehicle computing system can determine, based on the sensor data and the vehicle data, when the states of the passengers are associated with health conditions. Actions for the vehicle to perform can be determined based on the health conditions associated with the passengers. Furthermore, the vehicle computing system can generate control signals to control performance of the actions by the vehicle.

Abstract: Biologically active compounds that can be used as photosensitizers for diagnostic and therapeutic applications, particularly for PDT of cancer, infections and other hyperproliferative diseases, fluorescence diagnosis and PDT treatment of a non-tumorous indication such as arthritis, inflammatory diseases, viral or bacterial infections, dermatological, opthamological or urological disorders are provided as well as providing methods to obtain them in pharmaceutical quality. One embodiment consists of a method to synthesize a porphyrin with a defined arrangement of meso-substituents and then converting this porphyrin system to a chlorin system by dihydroxylation or reduction, and if more than one isomer is formed separate them by chromatography either on normal or reversed phase silica. In another embodiment the substituents on the porphyrin are selected to direct the reduction or dihydroxylation to the chlorin so that a certain isomer is selectively formed.

Abstract: Narrow band dwell occurs when air bearings corresponding to a set of read and/or write heads within a hard disc drive remain within a fixed narrow band of one or more storage platters for an extended period of time. The air bearings displace lubricant on the storage platters and may redeposit the lubricant as droplets on the platters. The presently disclosure technology is directed to monitoring a hard disc drive for narrow band dwell, and in some implementations, implementing operations to mitigate narrow band dwell. More specifically, the presently disclosure technology may detect an overflying air-bearing slider position, apply a lubrication film displacement formula to a narrow band of the storage platter, apply a lubrication film reflow formula to one or more other narrow bands of the storage platter, and track lubrication film thickness over time in each of the narrow bands of the storage platter.