Abstract: The disclosed apparatus includes a collision-type PM2.5 filter, a resistive heating rod with a temperature sensor, a sealed water tank, a condensation system, a virtual concentrator, a flow controller, a vacuum pump, a particulate matter collection bottle, dimethylacetamide reagent, an ultrasonic bath, a fraction automatic supply/collect integrated pump, a vacuum parallel concentrator, a micro-injection pump, and a liquid chromatography-time-of-flight mass spectrometer. This apparatus can replace traditional filter sampling for collecting PM2.5 greatly freeing up manpower, saving resources, and reducing organics loss in PM2.5. The collected sample solution is injected into the liquid chromatography-mass spectrometer for online analysis of organic components. By introducing an enrichment system, the concentration of sample PM2.5 can be increased at least by 10 times, enhancing the sampling capability of the apparatus. This apparatus achieves full automation of PM2.5 sampling and collection.

Abstract: Systems and methods are provided for inspecting aircraft fuselages. Non-Destructive Inspection (NDI) stations inspect sections of a fuselage via pulsed-line assembly techniques. After each pulse, a section of fuselage is moved by less than its length, and one or more NDI stations disposed at different portions of the section to inspect the section of fuselage for out-of-tolerance conditions. A method for inspecting a structure for inconsistencies which includes advancing a structure along a track in a process direction through a Non-Destructive Inspection (NDI) station, indexing the structure to the NDI station and inspecting the structure with the NDI station.

Abstract: An analysis system includes a setting device, an execution device, a determination device, and a notification device, and analyzes a sample by combining functions of a plurality of units. The setting device sets an analysis condition for each of the plurality of units. The execution device can execute the function of each of the plurality of units prior to the analysis of the sample. The determination device determines whether preparation for starting the analysis is completed for each of the plurality of units based on a comparison between a state of the unit and the analysis condition corresponding to the unit. The notification device notifies an analyst of a determination result by the determination device.

Abstract: A method is provided for non-invasively determining properties of a multiphase flow which flows through an electrically conductive object. Using a single set-up having a plurality of EMAT transducers, at least one property of the multiphase flow is determined by means of at least one of a plurality of measurement methods. A device is also provided for non-invasively determining properties of a multiphase flow which flows through an electrically conductive object. At least four EMAT transducers are positionable upstream along a first object cross-section at or near the object wall and at least four EMAT transducers are positionable downstream along a second object cross-section at or near the object wall.

Abstract: A high-temperature vibration modal testing device for variable cross-section carbon fiber resin-based composites includes triangular serrated sliding rails, high-temperature steel sliding bayonets, sliding furnace door, water-cooled conduits, dual-axis sliding rail, insulation box, infrared radiation heating array, thin armored thermocouples, observation port, tapping threaded rod, tapping threaded fixture, ceramic force transmission rod, excitation source, laser vibration measurer, vibration measuring port, mechanical pump, and exhaust valve. A variable cross-section carbon fiber resin-based composite test piece is fixed to the high-temperature steel sliding bayonets and fixed to the tapping threaded fixture by the dual-axis sliding rail.

Abstract: The present disclosure provides a monitoring and warning device for rock burst in coal mine, which is configured for monitoring a rock mass in a drill hole, the monitoring and warning device for rock burst in coal mine includes: an integration rod, radial adjustment components, a plurality of bases, and a measuring instrument, the integration rod is extended into the drill hole; the radial adjustment components are provided on the integration rod, and have a plurality of radial adjustment ends; a plurality of bases are correspondingly provided in the radial adjustment ends, and the bases are further connected with attachment components through elastic components, and the attachment components are embedded with first strain gauges; the measuring instrument is rotatably provided in the integration rod, and is used to measure the distance between the measuring instrument and the attachment components.

Abstract: A consumption meter, e.g. a water or heat meter, for measuring a flow rate of a fluid supplied in a flow tube. First and second ultrasonic transducers are arranged at the flow tube for transmitting and receiving ultrasonic signals transmitted through the fluid and operated by a flow measurement sub-circuit for generating a signal indicative of the flow rate of the fluid. A noise measurement sub-circuit operates a sensor arranged at the flow tube for detection of acoustic signals of the flow tube, and being arranged to generate a signal indicative of a noise level of the flow tube accordingly. This sensor may comprise a separate transducer, or the sensor may be constituted by one or both of the first and second ultrasonic transducers. The consumption meter may communicate data representative of the noise level via a communication module along with data consumed amount of water, heat etc.

Abstract: Erosion test rigs are provided for propelling dust and/or particles at high velocity and providing variable temperature ranges, as well as methods of using and fabricating the same. The erosion test rig can propel dust and/or particles at a velocity of up to 400 meters per second (m/s) and generate wide temperature ranges (e.g., from ?196° C. to 200° C.) to simulate the harsh erosive conditions of planetary environments (e.g., Mars and Luna).

Abstract: A system for reporting one or more events of interest in a structure, including an apparatus configured to be securely adhered to a surface of the structure, the apparatus having a flexible portion which conforms to a shape of the surface of the structure. The flexible portion containing a sensor to measure mechanical strain in the surface of the structure, and conductive traces to connect the sensor to electronics. The electronics to capture and buffer a signal output by the sensor, and a computational element to analyze the captured signal into a polynomial representing an event of interest. The system further including a wireless communication element to transmit the event of interest.

Abstract: A system and method for sampling metal ions in a corrosive gas is provided. The system includes: a sampling bottle; a vacuuming pipeline provided with a vacuuming device, where the vacuuming device is configured to vacuum a sampling chamber; a replacement gas pipeline configured to blow a replacement gas into the sampling chamber; an injection pipeline configured to inject a sample gas into the sampling chamber; and a purge gas pipeline. With the sampling system, the sampling bottle can be first subjected to vacuuming and thorough replacement to reduce the interference of impurities, then the sampling bottle is introduced with a corrosive sample gas, and then a corrosive gas is vaporized and blown away through a purge gas to leave metal ions or metal ions are dissolved in an absorption solution.

Abstract: A device (1) including an ultrasonic measuring unit (7) that sends an ultrasonic signal (S1) into a structure (2) and measures the amplitude of the ultrasonic signal (S2) reflected by the structure (2), a processing unit for determining the thickness of the interposition mastic (3) from the measurements of the ultrasonic measuring unit (7) and with the aid of a propagation model of the interposition mastic (3) which provides a thickness value of the interposition mastic (3) depending on the propagation time of the ultrasonic signal in the interposition mastic (3) as well as auxiliary data, and a processing unit for deducing a conformity or a lack of conformity of said interposition mastic (3) and the presence of cuttings from the thickness of the interposition mastic (3), the device (1) carrying out a conformity checking that is accurate, fast and reliable without having to disassemble the structure (2).

Abstract: The present invention relates to systems and methods for determining fluid quality. The system includes a sensing device. The sensing device includes an outer housing and an inner housing inserted within the outer housing. The sensing device includes a plurality of sensors configured to detect one or more parameters related to a fluid stored in a receptacle and ambient parameters of the receptacle. The sensing device further includes a control circuitry configured to generate sensory data based on the parameters related to the fluid and the ambient parameters of the receptacle. Further, the system includes a central control module. The central control module predicts, by one or more Artificial Intelligence (AI) models, the fluid quality of the fluid stored in the receptacle based on the sensory data. The AI models predict the fluid quality of the fluid based on mapping the sensory data with the set of predefined fluid quality profiles.

Abstract: A device and method for detecting the level of foam in a reactor vessel monitors the intensity of the light or the movement of the light detected by a camera which monitors at least one light source positioned inside the reactor vessel or viewable through the reactor vessel.

Abstract: An inspection device is disclosed herein. The inspection device may comprise: a support structure; a motor; a shaft operably coupled to the motor, the shaft extending from a first side of the support structure to a second side of the support structure, the shaft configured to couple to a bladed rotor; an optical device moveably coupled to the support structure; and a broad-band energy source configured to generate acoustic energy through the bladed rotor during inspection.

Abstract: The objective of the present invention is to obtain a flow rate measurement device capable of reducing variations in the flow rate detection accuracy by suppressing the inclination of a chip package relative to a circuit board. A flow rate measurement device 20 of the present invention includes a chip package 310 having a flow rate sensor 311 and a passage wall 314 formed therein, and a circuit board 300 on which the chip package 310 is mounted, in which the chip package 310 is mounted such that the flow rate sensor 311 faces a portion of the circuit board 300 and a portion of the passage wall 314 as a resin portion of the chip package 310 contacts the circuit board 300.

Abstract: A device and a method for measuring and/or monitoring at least one process variable of a medium is provided. The device comprises a sensor unit with a mechanically vibrating unit, at least one reflection unit, a piezoelectric element which is attached to the membrane, and an electronic. The device is designed to excite the mechanically vibrating unit to mechanical vibrations using an excitation signal, to receive the mechanical vibrations of the vibrating unit and convert them into a first reception signal, to emit a transmission signal, and to receive a second reception signal. The electronic unit is designed to determine the at least one process variable of the medium based on the first and/or second reception signal.

Abstract: A system and method for evaluating a bond is provided. The system uses an underwater spark discharge to generate a compression wave in a first vessel containing a liquid. The system further includes a second vessel in which a vacuum is pulled to hold the first vessel against a bonded structure being inspected. The compression wave is directed to propagate from the liquid into the bonded structure to apply a known force to the bond being inspected.

Abstract: A structure includes a substrate and a coating applied over the substrate, the coating containing particles sized between 30 and 250 micrometers. A proportion of the particles to the carrier is between 40 and 70 by volume percentage. In response to excitation of the structure by a controllable excitation source, a first instrument monitors behavior of the particles to determine a first condition of the structure thereby. In response to an absence of excitation of the structure by the controllable excitation source, a second instrument monitors behavior of the particles to determine a second condition of the structure thereby.

Abstract: The method of metered switching for a high-performance liquid chromatography (HPLC) sample injector is a method of controlled switching for a HPLC sample injector to control the amount of the sample being transferred to the HPLC separation column. In a load mode of the HPLC sample injector, a sample to be tested is injected therein until a sample loop is filled. The HPLC sample injector is switched into an injection mode such that a pressurized mobile phase pushes the sample through the sample loop and out of an outlet port. The HPLC sample injector is then switched back into the load mode at a selected time corresponding to a desired volume of the sample to be dispensed from the outlet port. The time-dependent correspondence between a flow rate of the pressurized mobile phase and the desired volume of the sample for the sample loop is already known.

Abstract: An improved modal decomposition method applicable to the analysis and reconstruction of the measured flow fields of internal solitary waves includes the following steps: S1. generating internal solitary waves and measuring a two-dimensional flow field sequence during the interaction of the internal solitary waves with the terrain; S2. extracting a target information from the two-dimensional flow field sequence and obtaining a flow field snapshot; S3. stitching the snapshots into a snapshot matrix in time order; S4. plotting the information density curve; S5. normalizing the information density curve and determining split points; S6. setting the snapshot matrix between two adjacent split points as a linear evolutionary characteristic stage; and S7. performing dynamic mode decomposition on the linear evolutionary characteristic stages.