Abstract: A system can include a sensor assembly and a wellhead flange sized to receive the sensor assembly. The system can also include a seal that can be positioned between the sensor assembly and the wellhead flange for sealing the wellhead flange from an external environment. The system can also include an inner coil that can be positioned within the sensor assembly. The inner coil may be able to communicate wirelessly with an outer coil that can be positioned around the sensor assembly for transmitting data and power with respect to the wellhead flange. The system can also include a sensor positionable in a through bore of the wellhead flange. The sensor can be coupled with the inner coil for transmitting and receiving data and power with respect to the wellhead flange.

Abstract: An apparatus for real-time monitoring of groundwater level and soil moisture of a gully head landfill area includes: a groundwater observation well set up in a monitoring area; a drop-in liquid level transmitter placed in the groundwater observation well and configured to sense a change of groundwater level and transmit data to an environmental supervision cloud platform (ESCP) through a data collection module; a plurality of soil moisture transmitters arranged in layers on a wall of the groundwater observation well and configured to sense soil moisture; a data collection module configured to receive data from the drop-in liquid level transmitter and transmit the collected signal to an ESCP; and an environmental monitoring host configured to receive data from the soil moisture transmitters and transmit the data to an environmental monitoring cloud platform (EMCP). A user can view real-time data by remotely logging in to the ESCP and EMCP.

Abstract: A measurement system for determining a physical parameter of a pipe-fluid system includes a pair of confining elements configured to decrease surface vibration deformations at an outer surface of each end of the pipe-fluid system; wherein each confining element comprise a supporting frame configured to be detachably mounted on a pipe of the pipe-fluid system; and a fixation element configured to be detachably mounted for mechanically coupling the supporting frame with an outer surface of the pipe; an excitation system, configured to generate a mechanical vibration spectrum at a surface of the pipe-fluid system; and a vibration measurement device configured to be mechanically coupled to an outer surface of the pipe-fluid system, and configured to provide a mechanical vibration spectrum of the pipe-fluid system.

Abstract: An apparatus for making isotopic ethane measurements of a gas sample includes a tunable infrared laser configured to emit an infrared laser beam; an infrared sensor configured to receive the infrared laser beam; a gas cell deployed in a path between the tunable infrared laser and the infrared sensor such that the infrared laser beam passes through the gas cell, the gas cell configured to receive the gas sample; and a controller configured to evaluate the received infrared laser beam to estimate a ratio of C13 ethane to C12 ethane in the gas sample.

Abstract: A full matrix capture (FMC) acoustic acquisition technique can be modified in a manner to compensate for one or more of variation from a nominal distance between an acoustic transducer array and the structure being scanned, or a variation from a nominal angle (e.g., inclination or declination) of the array surface with respect to the structure being scanned. Such modification can include determining incremental delay factors to be added or removed from nominal delay values in A-Scan data based on offset values corresponding to the transmit and receive transducer elements (or apertures) used for acquiring a particular A-Scan instance. The compensated A-Scan data in the FMC acquisition can then be used TFM imaging, for example.

Abstract: A pump unit includes a pump and a metal ion trap. The pump includes a metal member that comes into contact with a mobile phase. The pump pumps a mobile phase through a flow path. The metal ion trap includes a filter element. The filter element includes a metal ion retention structure for retaining metal ions by interacting with the metal ions included in a mobile phase. The filter element is provided in the flow path for a mobile phase pumped by the pump. The pump unit may be provided in a chromatograph.

Abstract: A wear evaluation method for evaluating the wear of a vehicle wheel tire (3) having a tread with a crown area, the method comprising the following measurement steps: causing a transducer (1) positioned on the vehicle in the proximity of the tire (3) to emit a first ultrasonic signal (S1); acquiring an electrical measurement signal produced by said transducer when it receives a second ultrasound signal (S2) resulting from the first ultrasonic signal being reflected by a metal target (4) incorporated in the thickness of the crown area of the tire; measuring at least one parameter of the electrical measurement signal; evaluating the wear of the tire from said parameter.

Abstract: A viscosity estimation device includes: a current detector detecting a drive current supplied to an induction motor which stirs a substance due to rotation of a rotating shaft which is rotationally driven; a rotation detector detecting rotation of the rotating shaft; and a calculator obtaining a viscosity correlation value, which is a value having a correlation with a viscosity of the substance, using a detection result of the current detector and a detection result of the rotation detector.

Abstract: A piezoelectric sensor for sensing an ovalling mode in a cylindrical structure, a non-destructive testing system for determining the strength condition of the cylindrical structure, and a method for non-destructive testing of the cylindrical structure are provided. The piezoelectric sensor includes an H-shaped caliper with a first and second arm, connected by a crossbar, and has a caliper connector near first end of each arm and a wire connector near second end of each arm. A piezoelectric wire is connected and stretched between the wire connectors and is connected to an electrical terminal to provide electrical signal in response to expansion and contraction as a result of vibrations induced in the cylindrical structure. The system includes a measurement unit connected to the electrical terminal, to receive and perform a frequency analysis of the electrical signal based on the ovalling mode and output a stiffness value of the cylindrical structure.

Abstract: The present invention provides a method for detecting and adjusting failed back-drills in PCBs in the process of fabricating a PCB so that the failed back-drill can be screened out or repaired. This is accomplished, by after detecting poor back drills in a PCB, measuring the actual thickness of each PCB board. Next, the measured actual thickness of each PCB board is compared with .the theoretical thickness of each PCB board. The back drill depth for each area of the PCB board is then adjusted for its theoretical thickness and percent variation from the measured thickness to adjust the poor back drill.

Abstract: A method is disclosed including providing a process fluid that can be described as having a plurality of components where each of the plurality of components has a respective mass fraction. In addition, the method includes providing an initial estimate of a compositional description for the plurality of components of the process fluid, measuring an ultrasonic sound speed of the process fluid, predicting a predicted sound speed of a liquid phase of the process fluid using an equation of state model, generating an error function using the ultrasonic sound speed of the process fluid and the predicted sound speed of a liquid phase of the process fluid, minimizing the error function and updating the respective mass fractions of the plurality of components and determining an optimized compositional description of the process fluid. Also disclosed are corresponding computer systems, apparatus, and computer programs configured to perform the actions of the methods.

Abstract: The invention relates to a vibration sensor with a housing and a mechanical oscillator, with a first tine and a second tine arranged thereon, and a drive for exciting the mechanical oscillator, wherein the drive is fixed relative to the mechanical oscillator by means of a yoke, wherein the yoke defines at least one yoke cavity, wherein a shoulder of at least one tine defines a tine cavity, wherein the yoke cavity and the tine cavity are aligned with one another, and wherein a balancing element is moveably arranged in the yoke cavity, so that it can be arranged at least partially in the tine cavity. The invention further relates to a method for comparing the vibration properties of two tines of a vibration sensor.

Abstract: A downhole sensor apparatus may include a structure securing a circuit board. The structure may be configured to be inserted into a recess in a tool on a drill string. The downhole sensor apparatus may include one or more sensors coupled to the circuit board and a cap over the structure. The downhole sensor apparatus may further include a data port electrically coupled to the circuit board and configured to transmit data from the sensors to an external device. The downhole sensor apparatus may include a threaded element configured to thread into complementary threads in the recess in the tool. The downhole sensor apparatus may be configured to operate in an idle condition. The downhole sensor apparatus may compare readings from at least two sensors to threshold downhole conditions and begin normal operation when the readings from the at least two sensors meet or exceed the threshold downhole conditions.

Abstract: A device for in-situ measuring settleability of activated sludge includes a sample chamber, an ultrasonic time domain reflectometer, a magnetic stirrer, an ultrasonic probe, a sample inlet, a sample outlet, and a stagnant zone. The sample chamber is configured to hold an activated sludge sample, and the ultrasonic time domain reflectometer is configured to measure the settling characteristics of the activated sludge. The stagnant zone is disposed in the sample chamber. The sample inlet and the sample outlet communicate with the sample chamber. The stagnant zone includes a top part, a sidewall, and a bottom part. The sample inlet is connected to the top part of the stagnant zone. The sample outlet is connected to the sidewall of the stagnant zone. The magnetic stirrer is disposed at the bottom part of the stagnant zone. The ultrasonic probe is disposed on the top part of the stagnant zone.

Abstract: Disclosed is a method for optimization design of an artificial reef structure. The method includes: arranging an artificial reef model to be tested on a test platform, testing a flow field to obtain flow field data and a pull force of an artificial reef, analyzing the flow field data to obtain a flow velocity reference point, and carrying out optimization analysis in combination with the flow field data and the pull force.

Abstract: This backing material for ultrasonic probes substantially comprises porous amorphous carbon.

Abstract: A light source that emits beam light, a beam shaping unit that shapes the beam light, and a pulse control unit that forms the beam light into pulse light are included. The light source emits beam light that has a wavelength that is to be absorbed by a measurement-target substance. The pulse control unit forms beam light that is emitted from the light source and with which a measurement-target part is irradiated, into pulse light that has a preset frequency and has a pulse width that is a reciprocal of twice the frequency. The beam shaping unit shapes the beam light so that a beam radius of the beam light that is emitted from the light source and with which the measurement-target part is to be irradiated is equal to a value obtained by dividing a speed of sound by ?×f, where f denotes the frequency.

Abstract: A mobile phase temperature control device for a supercritical fluid apparatus is used in a supercritical fluid apparatus including a separation column, and includes a cartridge heater, a flow path portion and a first temperature sensor. The cartridge heater has a rod shape. The flow path portion is wound around the cartridge heater, and a mobile phase is guided to the separation column of the supercritical fluid apparatus by the flow path portion. The mobile phase is put in a supercritical state at least in the separation column. The first temperature sensor is attached to the flow path portion, and the temperature of the flow path portion is detected by the first temperature sensor.

Abstract: Non-destructive testing scanner devices are disclosed to enable examination of portions of a part to be examined that presently-available scanners are not designed for. A scanner may include a central shaft having an assembly of engagement members adapted to engage an inner bore of a part and thereby support the central shaft along a central axis of the bore. An encoder may be supported by the central shaft. An ultrasonic probe may also be supported by the central shaft. The probe may be positioned on a surface of the part to be examined and moved in a circular path around the central shaft, and in so doing may cause a drive shaft on the encoder to rotate. The probe and encoder may be electrically connected to an instrument to convey data from the probe and from the encoder representative of characteristics of the surface being examined to the instrument.

Abstract: An experimental device and method for co-existence of overflow and lost circulation in a fractured formation during drilling of a deviated well are provided. An inner cavity of an outer pipe is provided with an inner pipe to form a deviated casing. An upper side of the outer pipe is provided with a mixture outlet. A middle-lower side of the outer pipe is provided with a leakage port and two overflow ports. The gap width can be changed by adjusting a bolt and a support block to be compatible with different types of fracture models. A gas injection system includes an air compressor and a gas flowmeter. An upper port of a liquid injection system is connected to a joint arranged at upper ends of the inner pipe and outer pipe through a water pump, a liquid flowmeter and a liquid regulating valve.