Abstract: The weight and center of gravity measurement equipment for aerial vehicles, comprising: a base frame, an equipment frame positioned above the base frame, first and second supporting components opposite each other at both equipment frame ends so that the line (A-A) connecting the centers of first and second clamp rings of these two supporting components is parallel to a horizontal plane; the first clamp ring is driven to rotate at predetermined angles ? around the line (A-A) by a servo motor through a gearbox; three load sensors arranged in a triangular pattern between the base and equipment frame; a processor receives signals from these load sensors, calculate the vehicle weight and center of gravity based on load values of the vehicle determined by the load sensors at the initial and at each positions where the vehicle rotated at the predetermined angle ?, and outputs the results to a display screen.

Abstract: Embodiments of the disclosure are drawn to apparatuses and methods for determining gas flux measurements. A gas plume may be emitted from a source and may be blown by wind in an environment. A measurement system, such as a light detection and ranging (lidar) system may collect a plurality of gas concentration measurements associated with the gas plume at a plurality of locations in the environment. A gas flux may be determined based on one or more of the gas concentration measurements along with a wind speed at a location associated with the gas plume. In some embodiments, a height of the gas plume may be determined, and the wind speed at the height of the gas plume may be determined and used to determine the gas flux.

Abstract: In a leak detection device comprising a gas analyzer, a vacuum pump, a first gas inlet, and a second gas inlet, it is provided that a first multi-way valve is connected to a first inlet and at least a first and a second outlet, wherein the inlet is connected to the first gas inlet, a second multi-way valve is connected to first inlet and at least a first and a second outlet, wherein the inlet is connected to the second gas inlet, wherein the two first outlets of the two multi-way valves are connected to the gas analyzer, and the two second outlets of the two multi-way valves are connected to the vacuum pump.

Abstract: Provided herein are systems and methods to detect pipeline leaks. The systems and method can identify a pipeline pressure surge by applying a trained convolutional neural network (CNN) model for classifying pipeline pressure measurement images on each sensor site of a plurality of sensor sites, transfer pressure surge information obtained from at least a portion of the plurality of sensor sites to a cloud site, and determine whether the identified pressure surge is a pipeline leak at the cloud site using the pressure surge information. The plurality of sensor sites collect pipeline pressure measurement data. The pressure surge information corresponds to the identified pipeline pressure surge.

Abstract: A system and method for cleaning and inspecting ring frames is disclosed here. In one embodiment, a vacuum valve comprising at least one sealing O-ring; and a pressure monitoring tape on a mating surface on a vacuum processing chamber, wherein the pressure monitoring tape is configured to perform a pressure profile mapping between the mating surface on the vacuum processing chamber and a surface of the at least one sealing O-ring on the vacuum valve to determine a closing condition of the vacuum valve.

Abstract: A folding mechanism includes a base module and a folding module which is coupled to the base module such that the folding module is capable of being rotated so as to realize a folding operation of a flexible material and which is coupled to the flexible material such that the folding module is capable of being slidably moved.

Abstract: A vibration test jig includes: a base installed on a vibration table, including a mounting surface on which the end of a test body is mounted; a top plate placed on the base with a gap therebetween, including a slot and a groove, the slot having an inner surface that presses the end of the test body toward the mounting surface, and the groove located in an extending direction of the slot and communicating with the slot; a wedge that is fit into the groove; and pressing members arranged along the slot and configured to press the top plate toward the base. An inner surface of the groove includes a bottom surface and holding surfaces located on both sides in a width direction of the groove and facing the bottom surface; and the wedge is in surface contact with the bottom surface and the pair of holding surfaces.

Abstract: A method for detecting a defect in a bearing of a rotating system, includes acquiring a bearing position signal, a vibratory signal from the bearing and a theoretical characteristic vector of the bearing; determining a deterministic part of the vibratory signal and removing the deterministic part to obtain a residual signal function of the position signal; calculating, from the theoretical characteristic vector, lower and upper bounds of defect frequencies; calculating, from the vibratory signal, a spectral coherence and the square of the amplitude of the spectral coherence; calculating, from the square of the amplitude of the spectral coherence and the lower and upper bounds of the defect frequencies, a current characteristic vector of the bearing; determining a spectral cyclic contrast of the defect; finely identifying signatures of interest by calculating a weighted integrated cyclic coherence associated with the defect, and determining diagnostic indicators easily interpretable by an operator.

Abstract: A wear diagnosis system and method for a floating tile of an oil receiver based on industrial Internet are provided and includes the following. The plurality of vibration sensors are installed on the oil receiver of a hydroturbine, the vibration sensors are configured for collecting vibration data of the oil receiver. The plurality of swing sensors are installed on the oil receiver of the hydroturbine, and the swing sensors are configured for collecting swing data of the oil receiver. The monitoring subsystem is configured for collecting start-stop information of an oil pump of an oil collecting device of the hydroturbine, an oil level of a hub high-level oil tank and unit load information. The test result collection subsystem is configured for collecting oiling test results of each oil tank of the hydroturbine. The diagnosis subsystem is configured to diagnose whether the floating tile of the oil receiver is worn.

Abstract: A device for collecting and sucking off clippings, in particular embedding medium, for example paraffin, on a microtome (1), in particular a rotary microtome, having at least one connecting element (12) for form-fitting and/or force-fitting attachment to the microtome (1) and a collecting tray (3) forming a collecting area, wherein an suction opening (4) for sucking off the clippings is formed on the collecting tray (3). Furthermore, a system with such a device, a microtome (1) and a work table (2) is disclosed.

Abstract: The present invention relates to a sample collection device, comprising: (a) a first tube accommodating a sample; wherein the first tube comprises an opened end part; (b) a second tube accommodating a sample transport medium; wherein the second tube comprises an opened end part; and (c) an adapter; wherein the adapter comprises a first accommodating part formed such that the opened end part of the first tube is inserted, a second accommodating part formed to be coupled to the opened end part of the second tube and a sealing part that comprises a first surface facing the first accommodating part and a second surface facing the second accommodating part, and partitions the first accommodating part and the second accommodating part, and wherein a breaking line is formed on the sealing part such that the sealing part is broken by a contact pressure.

Abstract: A gas sampling trap includes a first stage and a second stage. The first stage includes a metal salt that reacts with sulfurous species to produce acidic gas. The second stage configured to receive the acidic gas produced in the first stage. An adsorbent substrate in the second stage adsorbs the acidic gas. A method of sampling a gas includes directing gas onto a metal stage within a first stage to produce acidic gas, directing the acidic gas into the second stage, and adsorbing the acidic gas in the second stage with an adsorbent substrate. A method of detecting a concentration of sulfurous species in a gas includes sampling the gas with a sampling trap, desorbing adsorbed acidic gas from an adsorbent substrate of the sampling trap with a solvent, and testing the solvent with ion chromatography.

Abstract: A lysis device including a sample vessel, at least one piezo element, and a controller is disclosed. The sample vessel has a microchannel formed therein. The sample vessel has at least one port extending through a surface to the microchannel. The piezo element is attached to the surface of the sample vessel. The controller has logic to cause the controller to emit a first signal including a series of frequencies to the at least one piezo element to cause the at least one piezo element to generate ultrasonic acoustic standing waves in the sample vessel, to receive a second signal indicative of measured vibration signals from the sample vessel detected by the at least one piezo element, and to determine a resonant frequency of the sample vessel using the measured vibration signals.

Abstract: A system for tissue staining includes an upper housing, a lower housing, and a microscope lens. The upper housing includes a first reservoir configured to retain a solution therein, a valve attached to the reservoir including a turning knob, a first conduit configured to transport the solution, and a funnel fluidly connected to the first conduit. The lower housing is threadedly couped to the upper housing. The lower housing includes a top cassette portion having a window, a bottom cassette portion having a recess configured to retain a tissue therein, and a gasket disposed along an outer perimeter of the bottom cassette portion. The upper portion and the lower housing are coupled via threading. The microscope lens is configured to image the tissue through the window.

Abstract: A method of depigmenting melanin-pigmented samples is provided. The sample is incubated in the presence of a hydrogen peroxide-based solution at a temperature less than 65° C. for up to 180 minutes. Times, temperatures, and concentrations of hydrogen peroxide that appropriately balance extent of depigmentation with maintenance of cellular morphology and sample retention are also disclosed.

Abstract: An automated method for preparing a sample suspension. The sample suspension can be used for both MALDI and antimicrobial susceptibility (AST). A suspension is prepared, and a portion of that suspension is removed for a first analysis (e.g. MALDI), leaving a remaining volume. The turbidity of the remaining volume is measured. If the turbidity is below a first threshold, the suspension is not used for a second analysis (e.g. AST) and is subjected to a concentration protocol to raise the turbidity of the suspension. If the turbidity is within a predetermined range, a volume of the suspension is calculated that will deliver a predetermined amount of sample to a vessel for the second analysis. If the turbidity of the suspension is above the predetermined range, and the suspension has not been diluted a predetermined number of times, the suspension is diluted according to a dilution protocol.

Abstract: Techniques for concentrating analytes in fluid samples are described. An example method performed by a concentrator includes receiving a fluid sample; concentrating an analyte in the fluid sample by extracting water from the fluid sample; and based on concentrating the analyte in the fluid sample, outputting the fluid sample. The analyte is concentrated by extracting the water through a membrane and into a solution including at least one solute at a concentration that is greater than a concentration of at least one solute in the fluid sample, diameters of pores extending through the membrane being shorter than a diameter of the analyte and shorter than a diameter of the at least one solute.

Abstract: A kit is provided that includes an extraction tube or a transport tube; a filter, a liquid for bathing the filter within the tube; and a filter shaft. The filter shaft includes a distal portion that is coupled to a central portion of the filter. The filter shaft is configured to insert the filter into the tube for bathing the filter in the liquid. Other embodiments are also described.

Abstract: Provided are methods of preparing an immune cell sample from a subject having an autoimmune disorder, the method comprising: obtaining a tissue sample from the subject; and isolating a single immune cell in situ from the tissue sample using laser capture microdissection.

Abstract: A method for scanning at least one component includes placing the at least one component inside a storage vessel; filling the storage vessel with a cryogenic material; cooling the at least one component; placing the storage vessel between an x-ray source and a detector of a CT scanner; generating, via the x-ray source, an x-ray cone beam after cooling of the component that passes through the storage vessel while the at least one component is disposed within the storage vessel; receiving the x-ray cone beam at the detector; and generating an x-ray image of the at least one component.

Abstract: A shock testing apparatus includes a tower extending upward from a base. The tower includes a guide extending down the tower. A strike plate assembly includes a strike plate positioned below the guide for receiving mechanical shock from a striker striking out from the guide. A tri-axial accelerometer is mounted to the strike plate for data acquisition of three-dimensional shock wave acceleration data. A method of mechanical shock testing components includes dropping a striker onto a strike plate on which is mounted a unit under test (UUT) to generate three-dimensional shock waves through the strike plate. The method includes acquiring data indicative of acceleration in three orthogonal directions in at least one of the strike plate or UUT for a single drop of the striker.

Abstract: An apparatus for thermal ablation testing is provided. The apparatus comprises: a chamber; an optically transparent window in the chamber; a sample holder inside the chamber; a test sample in the sample holder; a number of bare-wire thermocouples connected to the test sample, wherein the thermocouples generate temperature data in the form of voltage; a mass balance inside the chamber, wherein the mass balance is configured to hold the sample holder and dynamically detect changes in mass of the test sample; an external radiant heat source configured to heat the test sample through the window; and a pyrometer directed at the test sample.

Abstract: A drilling needle includes a needle head at one end of a needle shank. The needle head has a flattened wedge portion with two wedge faces and a cutter portion with two cutting faces, which each adjoin one of the wedge faces and adjoin one another at a top edge that runs at a right angle to an axis of rotation. The needle head has on each side a relief face, which forms a cutting edge with each of the cutting faces. The cutting edge forms, with the respective other one of the cutting faces, a secondary edge that trails with respect to the direction of rotation. A relief angle, spanned by a virtual straight line through the cutting edge corner and a secondary edge and a plane that extends perpendicular to the top edge in the axis of rotation, lies in a range from 6° to 10°.

Abstract: Disclosed is an apparatus for and method of detecting a droplet of target material in a system for generating EUV radiation in which an illumination system is used to illuminate the droplet of a target material and a detector is arranged to detect radiation from the illumination system that has been forward or side scattered by the droplet of target material.

Abstract: A fluid inspection apparatus configured to define an inspection section of a fluid flow passage of a system. The fluid inspection apparatus includes a body element having a wall that defines the inspection section, a flow inlet to the inspection section, and a flow outlet from the inspection section. The inspection section defines a flow path between the flow inlet and the flow outlet. The fluid inspection apparatus further includes an impurity indicator configured to indicate the presence of an impurity in fluid flowing through the flow path.

Abstract: The present application introduces a membrane fouling warning methodology grounded in machine learning. It utilizes a machine learning-based membrane fouling prediction model to automatically forecast and generate electrochemical information values, which characterize the extent of membrane fouling at various time points, based on influent water quality parameters. It then acquires the electrochemical information values Zt at a moment t and Zt+?t at a moment t+?t. Subsequently, it computes and assesses the respective fouling levels using the electrochemical information values derived from the membrane fouling prediction model. Finally, it issues an early warning signal contingent upon the determined warning level. This methodology facilitates proactive understanding and management of membrane fouling, thereby sustaining the normal operation of the membrane fouling treatment system, mitigating the propensity for membrane assembly fouling, and prolonging the operational lifespan of the membrane assembly.

Abstract: A sensor arrangement for a combine harvester that includes a conveyor for grain-containing crops. The conveyor can be set in a periodic movement by a drive. The sensor arrangement includes a baffle plate sensor associated with the conveyor and configured to emit an electrical signal in response to an impact of a grain. The sensor arrangement includes an evaluation circuit which is connected to the baffle plate sensor for signal transmission. The evaluation circuit is configured to process the signal generated by the baffle plate sensor and, taking into account the respective position of the conveyor along movement of the conveyor, to recognize a signal generated by a grain and to emit a corresponding output signal.

Abstract: An exemplary method and system is disclosed that facilitate the integration of on-chip impedance sensors and measurement circuitries, e.g., in characterizing internal microfluidic structures and/or in cell or particle cytometry, for quantifying the impedance/frequency response of microfluidic device under the same, or similar, conditions used for particle manipulation. In some embodiments, the exemplary method and system employs a circuit configured for automated determination and quantification of parasitic voltage drops during AC electrokinetic particle manipulation, without the need to use valuable biological samples or model particles. The determined impedance response can be used to assess efficacy of the microfluidic device geometry as well as to provide control signals to inform downstream cell separation decisions.

Abstract: Microfluidic impedance based lab on chip is a sensor module to measure the impedance of a single biological cell flowing in channel of micrometer size. In the present invention, the enhancement in the channel cross-section 30 micron [h]×45 micron [w] leads to reduce the pressure drop significantly i.e., around 40 kPa at 100 microliter/min, which demands by cartridge based micro-pump for portable devices at Point of Care (PoC) location. Lab on chip of present invention is capable of withstanding 20 Vpp for several hours without degradation of electrodes and also capable to measure the particle with dimension down to 2 microns. Lab on chip of present invention was also used to count the platelet of the diluted blood samples without any pretreatment and comparable to the clinical lab report.

Abstract: The present disclosure relates to a flow cell carrier. The flow cell carrier may include a flow cell and a frame. The frame may include a pocket and a handle. The pocket may have at least one spring feature and at least one banking feature. The frame may be configured to retain the flow cell within the pocket such that a maximal surface area of the flow cell is exposed to an optical lens. Related methods and kits are also disclosed.

Abstract: A flow cytometry evaluation system includes a sample effluent system with an effluent collection vessel with an effluent fluid inlet to receive an effluent of the fluid sample exiting the investigation zone during a flow cytometry evaluation; and an effluent fluid conduction path from the investigation zone to the effluent fluid inlet.

Abstract: A sensing method of bioparticle positioning includes the steps of: providing a carrier divided into multiple detection areas; adding bioparticle sample in the carrier, wherein the bioparticle sample includes first bioparticle with biomarker and interacts with corresponding tag; providing excitation energy that makes the tag on the first bioparticle emit radioactive energy; moving the first sensor to the detection area respectively; after receiving radioactive energy, defining the detection area where the radioactive energy comes from as activity detection area, and sending location information of the activity detection area to processing module; according to location information, moving second sensor to detection area, detecting the location of the first bioparticle in activity detection area, and sending the location to processing module. A bioparticle positioning sensing system is also provided herein. The method and system above detect specific bioparticle quickly and improve the detection efficiency.

Abstract: The present invention relates to a blood cell analyzer, which includes a sample aspiration device used for aspirating a blood sample of a subject to be tested, a sample preparation device used for preparing a test sample, an optical detection device used for testing the test sample to obtain optical information, and a processor. The processor obtains from first optical information of a first test sample a first leukocyte parameter of a first target particle population in the first test sample; obtains from second optical information of a second test sample a second leukocyte parameter of a second target particle population in the second test sample, the first or second leukocyte parameters including a cell characteristic parameter; and on the basis of the first leukocyte parameter and the second leukocyte parameter, obtains an infection marker parameter for evaluating an infection state of the subject, and outputs the infection marker parameter.

Abstract: Herein are described a solid-state quasi-collimation stack and system containing the same. Also are described methods for narrow beamforming of electromagnetic radiation intended for the measurement of fluid samples. The solid-state quasi collimation stack typically comprises multiple layers of electromagnetic radiation blocking and absorbing components that selectively allow the passage of near-parallel electromagnetic beams.

Abstract: The invention relates to methods and systems for measuring optical characteristics of objects, particularly for measuring birefringence of objects. The method comprises directing a uniformly polarised measurement beam onto an object: rotating the state of polarisation of the measurement beam automatically with holograms: detecting polarisation properties of the measurement beam without interacting with the object and after interacting with the object for each state of polarisation of the measurement beam; and using the detected polarization properties of the measurement beam without interacting with the object and after interacting with the object for each the state of polarisation to determine a measurement of birefringence of the object.

Abstract: A spectrograph includes a base, a first optic mounted with respect to the base, a second optic mounted with respect to the base, and a third optic mounted with respect to the base. A first relative position between the first optic and the second optic is adjustable about a first pivot axis. A second relative position between the second optic and the third optic is adjustable about a second pivot axis independently from the adjustability of the relative position between the first optic and the second optic. The second pivot axis is substantially coincident with the first pivot axis, and a distance between the third optic and the second optic is fixed during adjustment of the second relative position.

Abstract: The present disclosure relates to a gas sensor using photo-active energy and capacitance, and provides a complex gas sensor including a light source configured to irradiate light, and a gas detection part in which adsorption of a target gas is promoted by the light and whose capacitance changes according to the adsorption of the target gas.

Abstract: Various characteristics in laser absorption spectroscopy using multiple reflections are improved. A gas measurement apparatus 1 according to the present disclosure measures a gas concentration by laser absorption spectroscopy. The gas measurement apparatus 1 includes a first corner cube 10, a second corner cube 20 disposed opposite the first corner cube 10, a laser source 30 that emits a laser beam to the first corner cube 10, and a light receiving element 40 that receives the laser beam that has been reflected multiple times through a target gas between the first and second corner cubes 10 and 20. The second corner cube 20 is disposed so that a centerline parallel to incident and exit light centering at incident and exit positions of the first corner cube 10 is displaced from a centerline parallel to incident and exit light centering at incident and exit positions of the second corner cube 20.

Abstract: An interferometric element intended for a device for detecting at least one compound having a resonant absorption over a predetermined spectral region centred on a resonance wavelength ?r, the interferometric element comprising a detection subset optimised for the resonance wavelength ?r and comprising: a plurality of optical cavities of Fabry-Perot type that are resonant at the resonance wavelength ?r, each cavity comprising a reflecting layer at the resonance wavelength ?r and a partially transparent layer at the resonance wavelength ?r, the partially transparent layer of the sensitive cavities being permeable to the compound or compounds to be detected an encapsulation layer that is impermeable to the compound or compounds to be detected and encapsulating a first subset of optical cavities, called reference cavities, such that each reference cavity has none of the compound to be detected between the reflecting layer and the partially transparent layer, the encapsulation layer not encapsulating a second sub

Abstract: In some examples, a method includes transmitting first light pulses according to a pre-determined pulse pattern in a first measurement period. The method also includes transmitting second light pulses according to the pre-determined pulse pattern in a second measurement period consecutive to the first measurement period, in which at least some of the first and second light pulses being unequally spaced in time across the first and second measurement periods. The method also includes receiving first detection signals representing detection of the first light pulses. The method also includes receiving second detection signals representing detection of the second light pulses. The method also includes providing a first light scattering measurement signal representing the first measurement period responsive to the first detection signals. The method also includes providing a second light scattering measurement signal representing the second measurement period responsive to the second detection signals.

Abstract: Implementations disclosed describe a system including a light source, an optical sensor, and a processing device. The light source directs, during a first time, a probe light into a processing chamber through a window. The light source ceases, during a second time, directing the probe light into the processing chamber through the window. The optical sensor detects, during the first time, a first intensity of a first light. The first light includes a portion of the probe light reflected from the window and a light transmitted from an environment of the processing chamber through the window. The optical sensor detects, during the second time, a second intensity of a second light. The second light includes the light transmitted from the environment of the processing chamber through the window. The processing device determines, using the first intensity and the second intensity, a transmission coefficient of the window.

Abstract: A method for characterising a sample located within an imaging region, the method comprising the steps of: generating one or more evanescent fields, each associated with a direction, within the imaging region; capturing an image of the imaging region; determining one or more sample characteristics of the sample according to a spatial intensity pattern resulting from an interaction between the, or each, evanescent field and the sample within the image, and associated apparatus and system.

Abstract: Disclosed herein include methods and related systems of bond-selective fluorescence-detected infrared-excited (BonFIRE) spectroscopy. BonFIRE employs two-photon excitation in the mid-IR and near-IR to upconvert vibrational excitations to electronic states for fluorescence detection, thus encoding vibrational information into fluorescence. The method comprises providing a sample comprising a dye molecule having an UV-vis absorption maximum; generating an IR laser and a NIR laser, wherein the IR laser and the NIR laser are coherent; aligning the IR laser and the NIR laser in a counter-propagating configuration on the sample; irradiating the dye molecule with the IR laser and the NIR laser; and detecting a fluorescence from the dye molecule which can be used to extract a bond-selective IR absorption maximum of the dye molecule or form an image of the sample from the fluorescence with single-molecule sensitivity.

Abstract: A measurement unit is a measurement unit used for measuring a characteristic of a biological sample. The measurement unit includes a first container that includes a first housing space, a first opening communicating with the first housing space, and a light transmission region through which light generated in the first housing space is transmitted, and a first solution that is a mixture of a plurality of reagents containing an indicator reacting with a component generated from the biological sample. The first solution is housed in the first housing space in a state of being frozen.

Abstract: Methods and systems described herein detect autofluorescence of a sample.

Abstract: An inspection apparatus is an inspection apparatus for inspecting a sample on which a plurality of light-emitting elements is formed, and includes an excitation light source that generates excitation light to irradiate the sample, a camera that images fluorescence having a wavelength longer than a reference wavelength in fluorescence from the light-emitting elements, and a control apparatus that determines a quality of each of the light-emitting elements based on fluorescence imaged by the camera, in which the reference wavelength is a wavelength obtained by adding a full width at half maximum of a normal fluorescence spectrum of the light-emitting element to a peak wavelength of the normal fluorescence spectrum.

Abstract: Provided is an advantageous technique for determining a positive threshold value for use in analyzing a stained specimen fluorescence spectrum. An information processing apparatus includes a threshold value determination unit configured to determine a positive threshold value that is to be compared with image data of a plurality of image sections included in a stained fluorescence component image, in which the positive threshold value is a criterion for determining whether or not each of the plurality of image sections corresponds to a positive cell image. The threshold value determination unit determines the positive threshold value on the basis of an unstained fluorescence component image.

Abstract: There is provided a system for measuring chlorophyll fluorescence. The system comprises at least one light source configured to emit substantially collimated or convergently focused light so as to irradiate an area with light; an actuator configured to controllably direct the light from the light source so as to enable the light source to irradiate a plurality of different areas with light; and an optical sensor configured to detect chlorophyll fluorescence from each area irradiated with light.

Abstract: A homogeneous assay method that employs a device is provided. In some embodiments, the device contains a pair of plates that can be opened and closed. The sample is placed between two plates. In some embodiments, the thickness of the sample in a closed configuration, the concentration of labels, and amplification factor of the amplification surface are configured to make the label(s) bound on the amplification surface visible without washing away of the unbound labels.

Abstract: The presently claimed and described technology provides systems and methods for determining concentration of an analyte of interest using Surface Enhanced Raman Spectroscopy (SERS). An automated SERS system can include a body for accepting a substrate, a fluid handling system, a light source, and a detector that collects and detects Raman scattered light.