Abstract: Among other things, the present disclosure relates to a wind turbine rotor blade that can be assembled at the site of its wind turbine. The blade includes an internal structure which may be pre-fabricated with connections to the shell skin prior to being transported to the site of its wind turbine. A filler material may be injected into the layers of fabric making up the shell skin at the wind turbine site and allowed to harden at approximately atmospheric conditions.

Abstract: Provided are novel vaccines for prophylactic treatment of SARS-COV-2 infections and COVID-19 and methods of making the vaccines, wherein the vaccines contain an oil-in-water emulsion comprising tocopherol and squalene.

Abstract: Embodiments relate to fluid baffles and parts and kits for making such baffles. For example, some embodiments relate to a fluid baffle for use in a tank, where the baffle comprises: a body defining an interior volume and defining a plurality of fluid passage apertures at spaced positions around the body to allow fluid to easily pass into and out of the interior volume; wherein the body comprises a continuous wall that defines a plurality of convex regions spaced from each other around the body and defines concave regions between the convex regions.

Abstract: Embodiments relate to fluid baffles and parts and kits for making such baffles. For example, some embodiments relate to a fluid baffle for use in a tank, where the baffle comprises: a body defining an interior volume and defining a plurality of fluid passage apertures at spaced positions around the body to allow fluid to easily pass into and out of the interior volume; wherein the body comprises a continuous wall that defines a plurality of convex regions spaced from each other around the body and defines concave regions between the convex regions.

Abstract: A hair styling appliance is described having electrodes and a drive unit. The drive unit is operable to determine a presence of hair between the electrodes. In response to determining that hair is present, the drive unit applies an alternating voltage to the electrodes to heat the hair dielectrically.

Abstract: A haircare device includes at least one power semiconductor switch coupled to drive, in use, a heater. A temperature sensor disposed for sensing a temperature of the at least one power semiconductor switch and outputting a temperature signal indicative of the sensed temperature. A controller is configured to determine whether the temperature signal is indicative of a temperature of the one or more power semiconductor switch exceeding a threshold. When the temperature signal is indicative of the temperature of the one or more power semiconductor switch exceeding the threshold, a power output of the at least one power semiconductor switch is turned off or reduced.

Abstract: Among other things, the present disclosure relates to a wind turbine rotor blade that can be assembled at the site of its wind turbine. The blade includes an internal structure which may be pre-fabricated with connections to the shell skin prior to being transported to the site of its wind turbine. A filler material may be injected into the layers of fabric making up the shell skin at the wind turbine site and allowed to harden at approximately atmospheric conditions.

Abstract: Among other things, the present disclosure relates to a wind turbine rotor blade that can be assembled at the site of its wind turbine. The blade includes an internal structure which may be pre-fabricated with connections to the shell skin prior to being transported to the site of its wind turbine. A filler material may be injected into the layers of fabric making up the shell skin at the wind turbine site and allowed to harden at approximately atmospheric conditions.

Abstract: A battery charger comprising input terminals for connection to an AC source, output terminals for connection to a battery to be charged, and a power factor correction (PFC) circuit connected between the input terminals and the output terminals. The PFC circuit comprises a current control loop for regulating an input current drawn from the AC source. The voltage at the output of the PFC circuit is regulated by the voltage of the battery which is reflected back to the PFC circuit. As a result, the battery charger acts as a current source that outputs an output current at the output terminals, and the waveform of the output current is periodic with a frequency twice that of the input current and a ripple of at least 50%.

Abstract: A battery charger comprising input terminals for connection to an AC source supplying an alternating input voltage, output terminals for connection to a battery to be charged, and a power factor correction (PFC) circuit connected between the input terminals and the output terminals. The battery charger monitors the voltage of the battery and operates in a first mode when the voltage is below a threshold. The battery charger then switches to a second mode when the voltage exceeds the threshold. The PFC circuit regulates an input current drawn from the AC source such that the waveform of the input current when operating in the first mode is different to that when operating in the second mode.

Abstract: A battery charger comprising input terminals for connection to an AC source supplying an alternating input voltage, output terminals for connection to a battery to be charged, and a PFC circuit connected between the input terminals and the output terminals. The power factor correction (PFC) circuit regulates an input current drawn from the AC source such that the input current has a waveform selected from a sine wave with third harmonic injection, a clipped sine wave and a trapezoidal wave. The battery charger then generates an output current at the output terminals, the output current having a waveform defined by the multiplication of the input current and the input voltage.

Abstract: A capacitor bank comprising at least two series chains each comprising a plurality of capacitors, wherein the series chains are coupled in parallel at corresponding points; and a fusible link arranged to form at least part of each coupling; wherein the corresponding points of each chain that are coupled to one another are at the same voltage when the capacitor bank is operational.

Abstract: This invention relates to stable non-aqueous single phase viscous vehicles and to formulations utilizing such vehicles. The formulations comprise at least one beneficial agent uniformly suspended in the vehicle. The formulation is capable of being stored at temperatures ranging from cold to body temperature for long periods of time. The formulations are capable of being uniformly delivered from drug delivery systems at an exit shear rate of between about 1 to 1×107 reciprocal second.

Abstract: This invention relates to stable non-aqueous single phase viscous vehicles and to formulations utilizing such vehicles. The formulations comprise at least one beneficial agent uniformly suspended in the vehicle. The formulation is capable of being stored at temperatures ranging from cold to body temperature for long periods of time. The formulations are capable of being uniformly delivered from drug delivery systems at en exit shear rate of between about 1 to 1×10?7 reciprocal second.

Abstract: The present disclosure relates to a power conversion system comprising a transformer comprising first, second, and third inductive coupling elements, a first power supply arranged to provide a voltage across the first coupling element, a second power supply arranged to provide a voltage across the second coupling element, an output arranged to receive a voltage from the third coupling element. In use, the voltage across the first coupling element and the voltage across the second coupling element are arranged to induce a voltage in the third coupling element. The system also comprises a control arrangement arranged to independently control the operation of the first and second power supplies.

Abstract: A rectifier circuit comprising an AC input, at least one thyristor coupled to the AC input, a DC bus driven by the at least one thyristor, a controller arranged to: derive a first current in the DC bus, derive a maximum current demand on the DC bus, and provide a trigger signal to the at least one thyristor based on the derived maximum current and the derived first current.