Abstract: A system and method test sustained and anti-islanding capabilities of EUT, where a power island is sustained without anti-islanding functionality and becomes de-energized with anti-islanding functionality. The method includes applying grid voltage to the EUT to obtain measurement current from the EUT; calculating RLC component values of a programmable RLC filter from measurement current and source voltage, including calculating target gain and phase, calculating target R, L and C parameters using the target gain and phase, and translating the target R, L and C parameters to physical parameters; applying the physical parameters and the measurement current to the programmable RLC filter to obtain RLC voltage; comparing the RLC voltage to source voltage; and when the RLC voltage is substantially the same as the source voltage, predicting that transition to a power island with the applied RLC component values will be sufficiently smooth to avoid triggering system protections of the EUT.

Abstract: A crossing gate mechanism comprises an electric brushless direct current (BLDC) motor which has at least one internal sensing device that is used as a closed feedback loop to determine a position of the BLDC motor and accurately control a speed of the BLDC motor, a crossing gate arm operated via the BLDC motor and a digital control system configured to control operation of the BLDC motor, wherein the digital control system is configured to provide a motor control signal that results in a soft start motion and a soft stop motion of the crossing gate arm. The BLDC motor is controlled by a state-machine logic stored within a Field-Programmable Gate Array/a central processing unit such that the state-machine logic finely controls an acceleration and a deceleration of the BLDC motor that provides a relatively smooth operation of the crossing gate arm when it reaches both horizontal and vertical positions.

Abstract: A crossing gate mechanism includes a brushless direct current (BLDC) motor with at least one sensing device, a crossing gate arm operated via the BLDC motor, a control unit configured to control the BLDC motor to raise or lower the crossing gate arm in response to a gate control signal, wherein the control unit comprises position and speed proportional-integral-derivative (PID) controllers configured to output a pulse width modulation (PWM) command to a commutator logic, wherein the PWM command is converted to a motor direction and PWM duty cycle, and wherein the PWM duty cycle is variable depending on a motor input voltage.

Abstract: A crossing gate mechanism includes an electric brushless direct current (BLDC) motor with a sensing device, a crossing gate arm operated via the BLDC motor, a motor brake coupled to the BLDC motor, wherein the motor brake is configured to hold the crossing gate arm in a position, and a controller configured to control the BLDC motor, wherein the controller is configured to control the BLDC motor to raise or lower the crossing gate arm in response to a gate control signal, and wherein, when the motor brake fails to hold the crossing gate arm in the position, the controller is configured to control the BLDC motor to hold the crossing gate arm in the position instead of the motor brake.

Abstract: A system of auto-calibration is provided in a crossing gate mechanism. The crossing gate mechanism comprises a shaft, a gate arm, a gate-down buffer, a brushless DC (BLDC) motor, a motor speed and position controller, an accelerometer and a hall-sense position counter. The system auto-calibrates the accelerometer and/or the hall-sense position counter when they are in disagreement due to temperature or due to some other phenomenon.

Abstract: A crossing gate mechanism includes an electric motor with one or more sensor(s), a crossing gate arm operated via the electric motor, and a controller configured to control the electric motor to raise or lower the crossing gate arm in response to a gate control signal. The controller is further configured to sense a motion of the crossing gate arm and detect an obstruction that prevents the crossing gate arm to execute the motion. Further, an associated method and non-transitory computer readable medium are described.

Abstract: An inhaler with an inner housing with a pressurised reservoir of an inhalable composition. A breath operated valve is operable by a user inhaling on an inhaling end of the inhaler. A composition flow path extends from the breath operated valve to the inhaling end via which the composition is dispensed when the breath operated valve is opened. The breath operated valve is biased closed by a biasing member contacting the breath operated valve at one end. A bung in the inner housing is positioned in an opening in the inner housing to support the end of the biasing member opposite to the breath operated valve. A rigid outer housing surrounds the inner housing and supports the bung.

Abstract: A crossing gate mechanism includes an electric motor with one or more sensor(s), a crossing gate arm operated via the electric motor, and a controller configured to control the electric motor to raise or lower the crossing gate arm in response to a gate control signal. The controller is further configured to sense a motion of the crossing gate arm and detect an obstruction that prevents the crossing gate arm to execute the motion. Further, an associated method and non-transitory computer readable medium are described.

Abstract: A crossing gate mechanism includes an electric brushless direct current (BLDC) motor with one or more sensing device(s), a crossing gate arm operated via the BLDC motor, and a controller configured to control the BLDC motor, wherein the controller is configured to control the BLDC motor to raise or lower the crossing gate arm in response to a gate control signal, and wherein the controller includes a Hall state encoder configured to determine a direction of an arm motion based on signals from the one or more sensing device(s).

Abstract: A crossing gate mechanism includes an electric brushless direct current (BLDC) motor with a sensing device, a crossing gate arm operated via the BLDC motor, a motor brake coupled to the BLDC motor, wherein the motor brake is configured to hold the crossing gate arm in a position, and a controller configured to control the BLDC motor, wherein the controller is configured to control the BLDC motor to raise or lower the crossing gate arm in response to a gate control signal, and wherein, when the motor brake fails to hold the crossing gate arm in the position, the controller is configured to control the BLDC motor to hold the crossing gate arm in the position instead of the motor brake.

Abstract: This disclosure relates generally to modified SARS-CoV-2 spike polypeptides. More particularly, the present disclosure relates to modified SARS-CoV-2 spike proteins with improved properties, to chimeric polypeptides comprising these modified proteins, and to complexes comprising the chimeric polypeptides. The present disclosure also relates to the use of these modified polypeptides, chimeric polypeptides and complexes in compositions and methods for eliciting an immune response to ACE2-interacting coronaviruses, including SARS-CoV-2, and/or for treating or inhibiting the development of ACE2-interacting coronaviruses infections.

Abstract: The present inventors have surprisingly discovered that phytic acid tenaciously precipitates with soluble metals in food or fuel ethanol-processing fluid, producing insoluble organometallic salt deposit or scale on the processing equipment that must be removed in order to facilitate further ethanol processing. The present invention relates to converting phytic acid salts or phytates to inorganic phosphates to improve metal solubility and reduce deposition within processing equipment.

Abstract: The present invention provides processes for the preparation of a hydrochloric acid salt of compound of formula (2): wherein: R1 is selected from the group consisting of —H, an unsubstituted straight-chain C1-C20-alkyl, substituted straight-chain C1-C20-alkyl, unsubstituted branched-chain C1-C20-alkyl, substituted branched-chain C1-C20-alkyl, unsubstituted cyclic C3-C20-alkyl, and substituted cyclic C3-C20-alkyl; and R2 is selected from the group consisting of an unsubstituted straight-chain C1-C20-alkyl, substituted straight-chain C1-C20-alkyl, unsubstituted branched-chain C1-C20-alkyl, substituted branched-chain C1-C20-alkyl, unsubstituted cyclic C3-C20-alkyl, substituted cyclic C3-C20-alkyl, unsubstituted —C1-20-alkyl-C3-20-cycloalkyl, substituted —C1-20-alkyl-C3-20-cycloalkyl, unsubstituted allyl and substituted allyl.

Abstract: A refill for an inhaler, the refill including a cylinder with an axis and containing a pressurised inhalable composition. An outlet valve at one end has a hollow valve stem extending axially from the cylinder. A cap is fitted onto the cylinder at the outlet end and extends axially beyond the valve stem. The cap has an internal passage extending through the cap to allow access to the valve stem. The internal passage provides a guide wall to guide the inhaler onto the stem during the refill process.

Abstract: The present inventors have surprisingly discovered that phytic acid tenaciously precipitates with soluble metals in food or fuel ethanol-processing fluid, producing insoluble organometallic salt deposit or scale on the processing equipment that must be removed in order to facilitate further ethanol processing. The present invention relates to converting phytic acid salts or phytates to inorganic phosphates to improve metal solubility and reduce deposition within processing equipment.