Abstract: A device for providing improved measurements of logs. The device includes a feed path of the logs, configured to feed the logs in a direction orthogonal to the axis of the logs; and one or more pick-up members spaced from one another in a direction transverse to the feed path of the logs. The pick-up members are adapted to pick up individual logs from a pick-up position along the feed path; and transfer each log from the measuring position back to the feed path substantially in the position in which it was picked up.

Abstract: Provided is a large high-speed rotary equipment gap stacking assembly apparatus and assembly method based on digital twin, and relates to the technical field of engine assembly measurement. The disclosure solves the problem of unbalanced rotation of the rotary parts caused by large assembly error during multi-stage rotary parts are stacked in a gap way. The disclosure includes the assembly apparatus entity and the assembly method; the assembly apparatus entity is configured to establish data communication with the upper computer through data acquisition apparatus, and upper computer is configured to establish a virtual assembly model; the virtual assembly model and optimal coaxiality of the multi-stage rotary parts in gap stacking can be obtained according to the assembly method, and the assembly process can be controlled by using the virtual assembly model and the optimal coaxiality. The disclosure is suitable for controlling the assembly process of the rotary parts.

Abstract: Apparatus and associated methods disclosed herein relate to configuring a light emitter to direct emitted light having a preselected wavelength through a liquid retained by a collapsible reservoir to a light sensor disposed in the collapsible reservoir, determining a distance separating the light emitter from the light sensor across the collapsible reservoir interior based on the amount of emitted light absorbed by the liquid, and determining the volume of the liquid retained by the collapsible reservoir based on the distance. The liquid may comprise an active compound formulation. An excipient may be added to the liquid in an excipient concentration governing a linear relationship between distance and light absorption at the preselected wavelength. The distance may be determined as a function of the linear relationship. The risks of abrupt therapy cessation or premature refill may be advantageously reduced by providing real-time remaining liquid volume measurements as the collapsible reservoir collapses.

Abstract: Disclosed are embodiments of apparatuses, systems and methods for detecting activities associated with theft of a substance flowing through the pipeline. Such activities are determined by correlating pipeline sensor signals to anomalistic reference signals characterizing activity(ies) known to be associated with theft of a substance flowing through a pipeline—e.g., formation of a hole within a tubular member of the pipeline, a liquid being pumped into the pipeline through a wall of a tubular member thereof, a metallic article (e.g., drill) coming into contact with a tubular member of the pipeline, and the like. Advantageously, fiber optic sensors are utilized for such monitoring of vibrations and other operating conditions in elongated tubular members making up the pipeline thereby enabling activities associated with theft of a substance from the pipeline to be effectively and inexpensively detected over extended lengths of pipelines.

Abstract: An inspection device is disclosed herein. In various embodiments, the inspection system device comprises: 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; and a scanner moveably coupled to the support structure, the scanner configured to generate a three-dimensional model for the bladed rotor.

Abstract: An optical fiber sensing system for abnormal occurrence detection includes a receiving unit configured to receive an optical signal from an optical fiber for sensing. The system includes an identifying unit configured to identify an occurrence of an event and a type of the event that has occurred based on a vibration pattern included in the optical signal. The system includes an acquiring unit configured to acquire a detection condition pertaining to a period corresponding to the type of the event identified by the identifying unit. The system includes a determining unit configured to determine that the event identified by the identifying unit is an anomaly if the detection condition is satisfied.

Abstract: The disclosed technology provides solutions for measuring seal characteristics and in particular, for precisely measuring frictional characteristics of a rotary seal. In some aspects, a seal testing apparatus of the disclosed technology can include a motor coupled to a proximal end of a shaft, a rotator coupled to a distal end of the shaft, and a housing disposed around an exterior surface of the rotator, wherein the housing is configured to removably receive at least one seal. In some aspects the seal-testing apparatus can further include a torque transducer coupled to the shaft, wherein the torque transducer is configured to measure a torque output of the motor.

Abstract: A method for characterizing a structure etched in a first substrate surface, the structure extending along a longitudinal direction, z, into the substrate, the method implemented by a system including a light source emitting an illumination beam with a wavelength transmitted through the substrate, and an imaging device positioned to face a second substrate surface opposite the first surface, the method including illuminating at least one structure with the illumination beam, subsequently positioning an object plane of the imaging device at at least two different longitudinal positions; acquiring at least one image of the structure at each of the longitudinal positions, the images being acquired through the substrate; measuring data relating to a lateral dimension of the structure from each acquired image at each of the longitudinal positions; and determining longitudinal data relating to a longitudinal shape of the structure from the lateral data of at least two longitudinal positions.

Abstract: A continuous mobile monitoring unit of a flow of cooling water includes a means to extract a flow of cooling water, means to analyze a plurality of parameters of the cooling water by means of diverse analytical techniques, generating results relating to each one of the parameters analyzed, and means to return the flow of cooling water to the cooling system. In addition, a method of continuous monitoring of the flow of cooling water includes the stages of: extracting a flow of cooling water, analyzing a plurality of parameters of the cooling water by means of diverse analytical techniques, generating results relating to each one of the parameters analyzed, and returning the cooling water to the cooling system.

Abstract: A method for monitoring the production of a material such as graphene in a liquid dispersion in real time, comprises supplying the liquid dispersion to a fluid gap defined between a first layer and an opposed second layer, wherein the first layer is light-transmissive and wherein the second layer has a diffusely reflective surface facing the first layer. The diffusely reflective surface is illuminated with light from a light source and light reflected from the diffusely reflective surface is detected at an associated photodetector. A light path from the light source to the photodetector comprises the light passing through the transmissive layer towards the diffusely reflective surface through the fluid gap, reflecting off the diffusely reflective surface and passing back through the fluid gap towards and onwards through the transmissive layer.

Abstract: The present invention discloses a convenient and small near-ground atmospheric-boundary-layer wind tunnel and its application in the human exposure risk assessment. This near-ground atmospheric-boundary-layer wind tunnel comprises a wind tunnel body and a reflux stabilizer; the wind tunnel body comprises a natural wind injection device and a simulation test device, with the natural wind injection device, the simulation test device and the reflux stabilizer connected in sequence; the natural wind injection device comprises a pipe fan, a swirl mixing pipe, a diffusion homogenizer, and a cyclone distribution pipe connected in sequence; the diffusion homogenizer is provided inside at the center with an inner member for preventing flow separation; and a static mixing spiral rod is welded on the inner wall surface of the swirl mixing pipe.

Abstract: A transparent resistive pressure sensor and method of making the same are disclosed. The transparent resistive pressure sensor may include a flexible pressure substrate, a pressure electrode layer, an elastic dielectric spacer with microstructure, a transparent pressure-sensitive composite layer composed of a transparent polymer dielectric matrix and a conductive one-dimensional nanomaterial oriented substantially in a thickness direction of the transparent pressure-sensitive composite layer, a support electrode layer, and a support substrate, where the elastic dielectric spacer with microstructure may include a transparent elastic dielectric film and a plurality of size-varied straight holes penetrating through the transparent elastic dielectric film in a thickness direction of the transparent elastic dielectric film.

Abstract: The technology relates to a transportable gas detector unit configured to operate in a detection mode and a test mode for gas sensor testing and calibration. The transportable gas detector is configured with one or more gas sources mounted on the gas detector unit by mounting points to rigidly hold the gas sources in place when the gas detector unit is moved, enabling remote testing/calibration of gas sensors.

Abstract: The present disclosure provides a mechanical property detection device and a force detection system, and relates to the technical field of hydrate experiment equipment. The mechanical property detection device includes a reaction kettle, a thrust mechanism, and a force detection sensor; a reaction platform and a reaction frame provided on the reaction platform are provided in the reaction kettle, an end of the thrust mechanism extends into the reaction kettle, and can push the reaction frame to move relative to the reaction platform, and the force detection sensor is configured to detect magnitude of a thrust of the thrust mechanism when pushing the reaction frame, so as to solve the technical problems such as inconvenience in testing an adhesive force of gas hydrate in the prior art.

Abstract: A pressure sensing device is provided. In the pressure sensing device, the rigid structure includes rigid blocks arranged at intervals, and strain amplification zones are formed between every two adjacent rigid blocks. The force sensors include first sensors and second sensors. The first sensors are arranged on the two installation surfaces of the strain amplification zones and capable of following the deformation of the measured object, the second sensors are arranged on the two installation surfaces of the rigid blocks and located close to corresponding first sensors. At least four force sensors are connected to form a bridge circuit, and the bridge circuit is electrically connected to a signal processing circuit, so as to detect deformation of the rigid structure and obtain a force acted on the measured object. An output signal of each of the second sensors serves as a temperature compensation signal of the corresponding first sensors.

Abstract: An optical fiber sensing system and method assessing that an abnormality has occurred when a vibration pattern of an optical signal output from an optical fiber, that detects a vibration, is not already known. When the vibration pattern of the optical signal has not occurred in accordance with a predetermined event, and the vibration pattern is an abnormal vibration pattern, assessing that the abnormality has occurred at a position at which the optical fiber detected the vibration.

Abstract: The disclosure relates to a sensor which is produced by stitching it onto a carrier using threads. The stitching forms a first electrode, a second electrode and a covering layer. The covering layer can be used to produce an electrically conductive connection between the first electrode and the second electrode, at least if a force acts on the covering layer and presses at least one part of the covering layer against a part of the first electrode and of the second electrode. This force can be caused by a pressure locally exerted on the covering layer and/or by bending of the covering layer or of the carrier. The entire sensor and, in particular, the first electrode, the second electrode and the covering layer are produced solely by being stitched onto a common carrier. The sensor can be produced in a particularly simple and cost-effective manner and is robust.

Abstract: The present invention relates to a method of determining the concentration of at least one compound in a chromatography method, wherein fluctuations of the stationary phase's spatial structure due to variations of the composition of the mobile phase and/or the chromatography temperature are considered by calculating the concentration c(z, t) based on the flow velocity ? and the bulk porosity ?b, which may vary due to the varying composition and/or temperature and which are determined for the varying composition of the mobile phase and/or the varying chromatography temperature.

Abstract: A method for balancing disc blades comprising the steps of: determining the initial position of the center of mass of the disc blade to be balanced with respect to its main axis; calculating/determining the number, the position and/or the dimensions of one or more balancing holes eccentric with respect to said main axis and necessary for removing an amount of material sufficient to bring the center of mass of the disc blade at a distance from the main axis lower than a predetermined maximum limit value; and forming said balancing hole or holes on the central disc in an eccentric position with respect to said main axis. The method improves the producibility of disc blades.

Abstract: A pressure sensor manifold is provided that resolves issues caused by accumulated particles and bubbles to improve print head performance. The pressure sensor manifold includes a fluid inlet, a fluid outlet, and a dome-shape cavity connecting with both the fluid inlet and the fluid outlet. The fluid inlet has a first interior cross-section, and the fluid outlet has a second interior cross-section. The dome-shape cavity has an apex. A line that is tangential to the apex passes through a plurality of points on both the first interior cross-section of the fluid inlet and the second interior cross-section of the fluid outlet.