Abstract: An air monitoring system with a controller in a computer system that operates to control a pump system to move air from a collection port for a cavity as diverted air to a tube connected to the collection port, move the diverted air into an input port of an air interface connected to the tube, through a chamber in the air interface, and out of a pump port of the air interface without increasing a pressure of the diverted air greater than a pressure level for a gas analyzer system to analyze an air sample collected from the diverted air. The controller operates to control the gas analyzer system connected to a sampling port in the air interface by a probe to obtain the air sample from the diverted air moving through the air interface and analyze the air sample to determine a set of components in the air sample.

Abstract: A sensor system is disclosed that includes a plurality of sensors, a deployment system for deploying the sensors, a control and charging system for receiving sensor data and optionally charging the batteries within the sensors, and one or more algorithms employed by the sensor system for processing, analyzing, and otherwise using data received by the plurality of sensors.

Abstract: A multiphase fluid is flowed from a flow pipe to a U-bend. Several differential pressures of the multiphase fluid flowing through the flow pipe and U-bend are measured. A mixture density of the multiphase fluid is determined at least based on the measured differential pressures. A total flow rate of the multiphase fluid is determined at least based on the measured differential pressures. In some cases, flow rates of each of the phases of the multiphase fluid can be determined at least based on the measured differential pressures.

Abstract: A separation column (6), an injector (4) that injects a sample into a mobile phase flowing through a flow path (16) leading to the separation column (6), at least one detector (8;10) that is fluidly connected downstream of the separation column (6), and generates a plurality of detector signals different from each other derived from a component in a sample separated by the separation column (6), a fraction collector (12) for fractionating and collecting a portion containing a component separated by the separation column (6) in an eluate from the separation column (6) into an individual collection container, and a controller (14) that detects a component peak in a plurality of chromatograms based on each of a plurality of the detector signals and controls operation of the fraction collector (12) based on a result of the detection are included.

Abstract: An exemplary portable automated device is developed for in vitro testing of blood vascular occlusion as a result of sickle cell disease. The portable automated device may be controlled by a computer (e.g., smartphone) application. Calibration of the portable device may be performed using a component of known impedance value. With the developed portable automated device, analysis may be performed on sickle cell samples on a microfluidic platform that mimics the structure of human capillaries. Significant differences in cell impedance signals may be observed between sickle cells and normal cells, as well as between sickle cells under hypoxia and normoxia conditions.

Abstract: Methods for determining phase fractions of a downhole fluid via thermal properties of the fluids are provided. In one embodiment, a method includes measuring a temperature of a fluid flowing through a completion string downhole in a well and heating a resistive element of a thermal detector at a position along the completion string downhole in the well by applying power to the resistive element such that heat from the resistive element is transmitted to the fluid flowing by the position. The method also includes determining, via the thermal detector, a flow velocity of the fluid through the completion string and multiple thermal properties of the fluid, and using the determined flow velocity and the multiple thermal properties to determine phase fractions of the fluid. Additional systems, devices, and methods are also disclosed.

Abstract: A drilling fluid flowback tracking system and method for determining quantities and qualities of drilling fluid returned from the wellhead in drilling operations, providing a frame, a receiving pipe, a riser pipe, and a surge suppressor for conveying returned drilling fluid, a tapered fluid bin having a calibrated drain slot, which retains fluid at a level corresponding to the inflow rate of the fluid, and flow rate marks for visual correlation of the highest level of outflow with the flow rate of the inflow. Collection and retention of data is further provided through sensors in an inline sensor housing communicating through a data cable with a data collection unit. Remote access to the data collection unit is further provided through a data transceiver and remote data unit.

Abstract: A method for evaluating Dry Eye Disease (“DED”) in a human or animal subject is provided. Thread thinning dynamics of a tear sample of the subject are determined using an acoustically-driven microfluidic extensional rheometry instrument. At least one physical parameter value of the tear sample is calculated based at least in part on the determined thread thinning dynamics. DED is evaluated based at least in part on the at least one calculated physical parameter value of the tear sample. A device for evaluating Dry Eye Disease (DED) in a human or animal subject is also provided. The device includes an acoustically-driven microfluidic extensional rheometry instrument and a processing device configured to evaluate DED based at least in part on the calculated at least one physical parameter value of the tear sample.

Abstract: A device and method for field in-situ multi-plot synchronous monitoring of greenhouse gas fluxes, wherein a transparent plexiglass chamber is fixed to a stainless steel base, and the plexiglass chamber is provided with two movable square plexiglass plates; the square plexiglass plates are connected to the plexiglass chamber through push rods, and the push rods are configured to close or open the square plexiglass plates, so to seal or communicate the plexiglass chamber; sampling tubes are arranged on side walls of the plexiglass chamber; one ends of sampling pumps are connected to the sampling tubes; one end of each sucking pump is connected to each sampling tube through a solenoid valve, and the other end of each sucking pump is connected to a gas analyzer through a switch; and the gas analyzer is connected to a computer host, configured to measure concentration data of gas in the sampling tubes.

Abstract: An object of the present invention is to detect ammonia with high sensitivity and high selectivity using a nanomechanical sensor with a structure that is as simple as possible. A method for detecting ammonia according to an embodiment of the present invention comprises supplying a sample gas possibly containing ammonia to a nanomechanical sensor that detects a stress or a displacement using poly(methyl vinyl ether-alt-maleic anhydride) as a material of a receptor layer, and detecting presence or absence of ammonia or a content of ammonia in the sample gas based on an output signal from the nanomechanical sensor, in which the sample gas is a humidified sample gas with controlled relative humidity.

Abstract: A manifold body includes at least first and second valve body segments each comprising an upper perimeter wall portion defining a valve cavity and a lower base portion defining one or more flow ports, a unified leak test port, a first branch leak test passage extending from the unified leak test port to an outer peripheral portion of the valve cavity of the first valve body segment, radially outward of an outer seal surface in the valve cavity, and a second branch leak test passage extending from the unified leak test port to an outer peripheral portion of the valve cavity of the second valve body segment, radially outward of an outer seal surface in the valve cavity.

Abstract: A method is disclosed for foot sensors to be used to determine at least two characteristics of a subject's activity by using a combination of sensors for force and foot orientation/motion/position. A wearable footwear ecosystem is comprised of the subject's footwear, sensor-enabled insoles or insertable devices, in- or on-footwear electronics that is hard wired to the sensors and may contain additional sensors such as accelerometers, a master device and means to communicate (typically wirelessly) among the various sensor platforms, and the master device including clock synchronization. Correlating the time stamps for data among various sensors, and the master device communicating wirelessly is critical to accurate determination of the desired characteristics. Multiple force-sensitive resistors on a common substrate are individually optimized for dynamic range. Pulse sensors using arrays of such force-sensitive resistors are implemented.

Abstract: A device to determine density includes a housing, a first transducer disposed in the housing at a first position, and a second transducer disposed in the housing at a second position. The second transducer is located a distance from the first transducer. The device also includes a controller that reads a first output from the first transducer, and reads a second output from the second transducer. The controller determines a density of a liquid based on the first output, the second output, and the distance.

Abstract: The present disclosure provides a lubrication analysis method for a stern bearing based on magnetic-hydraulic composite support coupling, including: performing structural deformation analysis on a stern bearing on the basis of a magnetic support analysis result and a lubrication support analysis result to obtain a structural deformation amount, correcting a water film thickness, repeating lubrication and interface characteristics analysis to obtain water film pressures before and after correcting, comparing the water film pressures to determine whether convergence occurs, solving for a load carrying capacity of the stern bearing on the basis of the analysis result if the convergence occurs, determining whether the load carrying capacity is balanced with an input load, and calculating a bearing wear depth of the stern bearing on the basis of a contact force of a micro-convex body if the load carrying capacity is balanced with the input load.

Abstract: The present disclosure provides a system and a method for measuring water capacity of polar lakes, and relates to the technical field of lake water capacity measurement. The method comprises the steps: controlling an unmanned aerial vehicle to move along with an unmanned underwater vehicle at a preset height right above the unmanned underwater vehicle by utilizing an ADRC algorithm; obtaining lake surface point cloud data, under-lake point cloud data and under-lake single-beam ranging data so as to construct a water three-dimensional topographic map, a lake coastal three-dimensional topographic map and a lake bottom three-dimensional topographic map under the same coordinate system, and then determining the lake water capacity.

Abstract: In an embodiment a sensor system includes a housing, an electronic circuit and an ultrasonic distance sensor, wherein the electronic circuit and the ultrasonic distance sensor are arranged in the housing, and wherein the sensor system is configured to measure a distance between the sensor system and a surface of a material in a container by an echo propagation time of an ultrasonic burst in air.

Abstract: A supercritical fluid chromatograph includes a liquid sender that supplies a mobile phase including a supercritical fluid to a supply flow path, first and second back pressure regulators that are respectively provided in first and second flow paths into which a path from the liquid sender branches and an analysis column provided at a position farther upstream than the first back pressure regulator in the first flow path. An analysis assistance device includes a storage a receiver, a first calculator, and a presenter.

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 fluid dispenser, such as a skincare product dispenser, comprises a dispenser housing configured to hold a reservoir of fluid for dispensing and a drive assembly for interacting with the reservoir and causing dispensing of the fluid. A fluid detection sensor is positioned within the dispenser housing proximate the reservoir and configured to detect a capacitance level therein. A controller is configured to determine, based on data from the fluid detection sensor, a change in the fluid level across a dispense. The controller is also configured to determine, based on the determined change, that the fluid level in the reservoir reaches a threshold level and cause an action, such as providing an alert, sending information to a remote server, or modifying an operating parameter.

Abstract: An apparatus for demonstrating at least a first shaving razor, having a first shaving surface with a first lubrication member, may include a first sheet of paper, a liquid composition, and a light source transmitting ultraviolet light onto the first sheet of paper. The liquid composition may include water and an ultraviolet dye. The apparatus may position the shaving razor to engage the first sheet of paper and to allow relative motion between the first lubrication member and the first sheet of paper such that the first lubrication member deposits the liquid composition onto the first sheet of paper.