Abstract: The disclosure is directed in part to dependoparvovirus capsid polypeptides that can be used to deliver payloads.

Abstract: A method for testing a rescue hoist that includes motor drive train. The motor drive train includes: a primary load brake, a secondary load brake and a cable drum comprising a cable. The method includes: reeling the cable out of the cable drum followed by reeling the cable in at a speed that is sufficient to disengage the primary load brake and verifying that the cable drum is rotating. When verified that the cable drum is rotating, the method further comprises the step of decreasing the motor torque output, before engaging the secondary brake. The method further comprises the step of verifying that said cable drum has stopped rotating, and if it is verified that the cable drum has stopped rotating, disengaging the secondary brake, restoring torque motor output and then reeling said cable is reeled into the homed position and the test is confirmed to have been passed.

Abstract: A method for testing a rescue hoist that includes motor drive train. The motor drive train includes: a primary load brake, a secondary load brake and a cable drum comprising a cable. The method includes: reeling the cable out of the cable drum followed by reeling the cable in at a speed that is sufficient to disengage the primary load brake and verifying that the cable drum is rotating. When verified that the cable drum is rotating, the method further comprises the step of decreasing the motor torque output, before engaging the secondary brake. The method further comprises the step of verifying that said cable drum has stopped rotating, and if it is verified that the cable drum has stopped rotating, disengaging the secondary brake, restoring torque motor output and then reeling said cable is reeled into the homed position and the test is confirmed to have been passed.

Abstract: Provided are embodiments for a method for variable differential transformer demodulation using a hybrid algorithm. The method can obtain a first feedback signal over a first half of a first cycle and a second feedback signal over a first half of a second cycle, and obtain a first calibration signal and a second calibration signal during a second half cycle of the first cycle. The method can also obtain an excitation signal over a second half of the second cycle, and determine a sensor position of the variable differential transformer based on the first feedback signal, the second feedback signal, and the excitation signal. Also provided are embodiments for a system for variable differential transformer demodulation using a hybrid algorithm.

Abstract: The present disclosure relates to development of aptamers, and in particular to developing machine-learning models to describe characteristics of a given sequence for an aptamer and based on the characteristics find other sequences for aptamers not observed experimentally, and techniques for separating out sequences for aptamers that are present primarily due to PCR bias and/or binding affinity. Particularly, aspects of the present disclosure are directed to obtaining sequence data for an aptamer sequence that binds to a target, generating a binding affinity latent variable and a PCR bias latent variable based on the sequence data, generating a predicted count of the aptamer sequence based on the binding affinity latent variable and PCR bias latent variable, determining that the binding affinity latent variable is greater than the PCR bias latent variable, and in response to the determining, accepting the predicted count of the aptamer sequence.

Abstract: A method of geophysical exploration in a seismic survey includes acquiring a set of seismic traces based on seismic data obtained by a seismic receiver, responsive to seismic energy reflected from a subsurface geology. Additional steps include performing reverse time migration on the seismic traces using a velocity model that represents velocity of the seismic energy propagating through the seismic medium. The migrated gathers have an amplitude based at least in part on the migration, which can be corrected by computing synthetic seismograms to provide compensated gathers. Amplitude versus offset and/or amplitude versus angle analysis can be performed on the compensated gathers, in order to generate a seismic image of subsurface structures in the survey area.

Abstract: An axial piston pump has a fluid inlet, a fluid outlet, and a rotatable, one-piece piston housing carrying one or more pistons movable within one or more respective sleeves formed by the housing. A circumferential row of fixed field members is mounted to the housing at a mounting location formed by the housing, the mounting location being radially outward of the sleeve(s). The pump further has a stator surrounding the piston housing and including a circumferential row of armature windings such that the piston housing and the stator form an electro-magnetic motor operable to rotate the piston housing, and a swashplate engaged with the piston(s) such that rotation of the piston housing relative to the swashplate around an axis of rotation produces reciprocating movement of the piston(s) for the pressurisation of fluid received into the sleeve(s) from the fluid inlet and then discharged from the sleeve(s) to the fluid outlet.

Abstract: Embodiments of dynamic gain adjustments in seismic surveys are described. One method of acquiring a seismic survey includes determining an arrival time at a seismic receiver of a downgoing seismic wavefield associated with a seismic source based at least in part on an estimated position of the seismic source, an estimated position of the seismic receiver, or combinations thereof. The method also includes adjusting a gain of the seismic receiver based at least in part on the determined arrival time of the downgoing seismic wavefield in order to, for example, help prevent overdriving or clipping of the seismic receiver when the downgoing seismic wavefield arrives at or passes by the seismic receiver.

Abstract: An aero-engine low pressure pump is provided for supplying fuel at a raised pressure to a high pressure pump. The low pressure pump has a pumping mechanism which raises the pressure of fuel flowing though the mechanism. The low pressure pump further has electrical motor which drives the pumping mechanism. The low pressure pump further has a variable frequency motor drive which supplies electrical power to the electrical motor. The variable frequency motor drive measures the electrical power supplied to the electrical motor. The low pressure pump further has a control unit which compares the measured electrical power to a reference power, and, when the measured electrical power is less than the reference power by a predetermined amount, controls the motor drive to increase the power supplied to the electrical motor thereby increasing the pressure rise produced by the pumping mechanism.

Abstract: A gear pump has first and second meshing gears for pumping a fluid. The gear pump further has a first electrical motor having a first rotor, a first stator and first coil windings. The gear pump further has a second electrical motor having a second rotor, a second stator and second coil windings. The first rotor is operatively connected to the first gear and the second rotor is operatively connected to the second gear such that each gear is rotated by its respective rotor. The first and second coil windings are energized by respective and separate first and second electrical power circuits such that the first and second meshing gears can be driven independently of each other.

Abstract: A method of geophysical exploration in a seismic survey includes acquiring a set of seismic traces based on seismic data obtained by a seismic receiver, responsive to seismic energy reflected from a subsurface geology. Additional steps include performing reverse time migration on the seismic traces using a velocity model that represents velocity of the seismic energy propagating through the seismic medium. The migrated gathers have an amplitude based at least in part on the migration, which can be corrected by computing synthetic seismograms to provide compensated gathers. Amplitude versus offset and/or amplitude versus angle analysis can be performed on the compensated gathers, in order to generate a seismic image of subsurface structures in the survey area.

Abstract: A combination of a gas turbine pressure sensing assembly and an engine electronics unit. The pressure sensing assembly includes a pressure manifold having an air inlet and one or more air outlets. The pressure sensing assembly further includes one or more pressure sensors connected to the air outlets to sense the pressure of air entering through the air inlet. The engine electronics unit in operation produces waste heat. The pressure sensing assembly further includes a heat conduction path which thermally connects the engine electronics unit to the manifold such that the manifold acts as a sink for the waste heat. The temperature rise of the manifold produced by the waste heat preventing icing of the manifold.

Abstract: A surface mountable, toroid magnetic device is provided, the device having a potting filling the central hole of the toroid. The potting extends axially beyond the base of the toroid to form a contact surface which, in use, contacts a mounting body for the device. Heat generated by the device flows by conduction through walls of the toroid defining the central hole into the potting and then through the contact surface into the mounting body.

Abstract: An axial piston pump has a fluid inlet, a fluid outlet, and a rotatable, one-piece piston housing carrying one or more pistons movable within one or more respective sleeves formed by the housing. A circumferential row of fixed field members is mounted to the housing at a mounting location formed by the housing, the mounting location being radially outward of the sleeve(s). The pump further has a stator surrounding the piston housing and including a circumferential row of armature windings such that the piston housing and the stator form an electro-magnetic motor operable to rotate the piston housing, and a swashplate engaged with the piston(s) such that rotation of the piston housing relative to the swashplate around an axis of rotation produces reciprocating movement of the piston(s) for the pressurisation of fluid received into the sleeve(s) from the fluid inlet and then discharged from the sleeve(s) to the fluid outlet.

Abstract: Embodiments of dynamic gain adjustments in seismic surveys are described. One method of acquiring a seismic survey includes determining an arrival time at a seismic receiver of a downgoing seismic wavefield associated with a seismic source based at least in part on an estimated position of the seismic source, an estimated position of the seismic receiver, or combinations thereof. The method also includes adjusting a gain of the seismic receiver based at least in part on the determined arrival time of the downgoing seismic wavefield in order to, for example, help prevent overdriving or clipping of the seismic receiver when the downgoing seismic wavefield arrives at or passes by the seismic receiver.

Abstract: A gear pump has first and second meshing gears for pumping a fluid. The gear pump further has a first electrical motor having a first rotor, a first stator and first coil windings. The gear pump further has a second electrical motor having a second rotor, a second stator and second coil windings. The first rotor is operatively connected to the first gear and the second rotor is operatively connected to the second gear such that each gear is rotated by its respective rotor. The first and second coil windings are energised by respective and separate first and second electrical power circuits such that the first and second meshing gears can be driven independently of each other.

Abstract: An aero-engine low pressure pump is provided for supplying fuel at a raised pressure to a high pressure pump. The low pressure pump has a pumping mechanism which raises the pressure of fuel flowing though the mechanism. The low pressure pump further has electrical motor which drives the pumping mechanism. The low pressure pump further has a variable frequency motor drive which supplies electrical power to the electrical motor. The variable frequency motor drive measures the electrical power supplied to the electrical motor. The low pressure pump further has a control unit which compares the measured electrical power to a reference power, and, when the measured electrical power is less than the reference power by a predetermined amount, controls the motor drive to increase the power supplied to the electrical motor thereby increasing the pressure rise produced by the pumping mechanism.

Abstract: A pump has a brushless electrical motor including a stator assembly and a rotor ring arranged externally of the stator assembly. The pump further has a centrifugal impeller operatively connected to the rotor ring such that the electrical motor rotates the impeller. The impeller is configured to raise the pressure of a fluid which flows through the impeller between an inlet and an outlet thereof. The pump is configured such that a portion of the raised pressure fluid flow is diverted to form a recirculation flow which circulates through and cools the electrical motor before being returned to the impeller for re-pressurisation thereby.

Abstract: Methods, systems, and apparatuses are disclosed for conducting reconnaissance marine seismic surveys. In one example method of acquiring a marine seismic survey, a plurality of streamers are towed behind an acquisition vessel, the plurality of streamers defining a swath. An independent source is towed by an independent source vessel above one or more of the plurality of towed streamers.

Abstract: A combination of a gas turbine pressure sensing assembly and an engine electronics unit. The pressure sensing assembly includes a pressure manifold having an air inlet and one or more air outlets. The pressure sensing assembly further includes one or more pressure sensors connected to the air outlets to sense the pressure of air entering through the air inlet. The engine electronics unit in operation produces waste heat. The pressure sensing assembly further includes a heat conduction path which thermally connects the engine electronics unit to the manifold such that the manifold acts as a sink for the waste heat. The temperature rise of the manifold produced by the waste heat preventing icing of the manifold.