摘要:
Disclosed are a method and an NDT/NDI inspection device deploying digital circuitry to conduct detection and compensation of phase and amplitude shift in responding signals. A digital waveform generator, such as a direct digital synthesizer (DDS) is used to generate a digital sine-wave of a specific frequency and amplitude, mimicking the pulser frequency and amplitude. The sine-wave is converted to analog signal through a DAC and transmitted to the transducer. The received analog sine-wave from the transducer is converted back to a digital signal through an ADC. The transmitted and received digital signals are then compared for phase and amplitude differences. A null circuit involving another waveform generating component is employed to compensate the detected phase and amplitude differences. As a result the phase and amplitude differences are effectively eliminated before being further processed and analyzed for defects information.
摘要:
The present invention is concerned with novel triazole compounds of formula (I) wherein A, X, Y, u, v, R1, R2, and R3 are as described herein, as well as pharmaceutically acceptable salts thereof. The compounds of present invention have affinity and selectivity for the GABA A α5 receptor. Further the present invention is concerned with the manufacture of the compounds of formula (I), pharmaceutical compositions comprising them and their use as pharmaceuticals.
摘要:
A method of drilling one or more holes, substantially in situ, in a turbomachine casing includes locating piping including at least one vacuum head within the turbomachine casing in proximity to a hole to be drilled; drilling at least one hole in the casing such that drill chips or shavings caused by the drilling are collected in the vacuum head; and applying a vacuum through the piping to the at least one vacuum head to thereby remove the drill chips or shavings collected in the vacuum head to a location outside the turbomachine casing.
摘要:
A method of recording satellite signals for later processing to derive position information. According to one aspect, the method comprises receiving and digitising first and second satellite signals using a first set of parameters; and receiving and digitising third and fourth satellite signals using a second set of parameters. A first time interval between the first and second satellite signals is longer than a second time interval between the reception of the third and fourth satellite signals. The first set of parameters is associated with relatively higher resource usage, while the second set of parameters is associated with relatively lower resource usage.
摘要:
A method and apparatus comprising a design tool to enable the design of a three dimensional object including a plurality of faces and a plurality of vertices. The apparatus further comprising a skinner to generate a two dimensional image file including the plurality of faces from the three dimensional object, and a communications tool to send the two dimensional image file and associated structure data to a recipient using a messaging protocol. The apparatus further comprising a builder to utilize a received two dimensional image file and associated structure data to generate a received three dimensional object.
摘要:
An airboat that may include an engine that is mounted to the hull of the airboat at an angle, and at least one propeller mounted to the hull of the airboat at an angle. The canted engine and propeller design may facilitate a lower center of gravity, a lower average center of thrust above the waterline, air induction for reduced surface drag, the lowering of torque roll forces, less overall boat height, and fuel efficiency with a reduced level of noise.
摘要:
An apparatus for sensing an integrated circuit (IC) card may include a bottom surface in contact with a chassis of an information handling system (IHS) to form a slot for receiving at least one type of IC card and a top surface in communication with a transmitting element for sensing a first type of IC card inserted within the slot. The apparatus further includes a contact field disposed on the bottom surface, the contact field for sensing a second type of IC card inserted within the slot.
摘要:
This disclosure describes a training apparatus, wherein embodiments of the training apparatus simulate operation of fan blades in a turbine engine. An advantage that practice of some disclosed embodiments of the training apparatus is to provide a platform to train skills for maintaining and servicing turbine engines without placing the individual and/or customer hardware in jeopardy.
摘要:
Methods and apparatus for sealing a puncture or incision formed percutaneously in tissue separating two internal portions of the body of a living being with an anchor, a sealing plug and a filament connecting the anchor and sealing plug are disclosed. The methods and apparatus provide for automatic tamping of the sealing plug. In addition, torque required to tamp the sealing plug is automatically sensed and gear ratios of an automatic tamping device are automatically changed in response to sensed changes in torque. A planetary transmission may be used to automatically change gear ratios in response to the changes in torque.
摘要:
A modular, rotisserie type tooling fixture assembly for use in a coating operation and method of its use are disclosed. The tooling fixture assembly includes an arbor or shaft and a retaining base with a plurality of anchor members disposed in a prescribed radial orientation from the center of the retaining base, the anchor members are uniquely configured or adapted to retain a plurality of workpieces to be coated. The tooling fixture assembly further comprises a unique workpiece masking arrangement that employs a unitary masking cap having a plurality of solid walls or surfaces adapted to cover portions of the plurality of workpieces in a masking relationship.