Abstract: The invention discloses a device for testing strength and sealing performance of cement sheath after perforation, comprising a cement sheath curing maintenance simulation component, a perforation operation simulation component, and a cement sheath performance test component.

Abstract: A system and method for controlling a pump in a drilling system, of which the method includes determining a plurality of baseline behaviors for one or more valves of the pump, determining a plurality of in-use behaviors for the one or more valves of the pump. Each of the plurality of in-use behaviors are determined based on one or more measurements from one or more sensors. The method also includes comparing the in-use behaviors and the baseline behaviors, and forecasting, based on the comparison of the in-use behaviors and the baseline behaviors, a remaining useful life of the at least one of the one or more valves.

Abstract: A method of detecting radon may include starting a first timer at a radon detection device in response to a first triggering action. A seal of the radon detection device may transition to a seal position from an open position in response to the first timer being equal to a measurement interval. The open position may facilitate the introduction of ambient air to a vent of the radon detection device. The seal position may discourage introduction of the ambient air to the vent. The vent may be in fluid communication with a test material. The test material may collect radon from the ambient air introduced to the radon detection device. A second timer may be started in response to the seal transitioning from the open position to the seal position. The seal remains in the sealed position following the transition from the open position to the sealed position.

Abstract: In one illustrative configuration, a method of locating an emission source of a target substance at a site is disclosed. The method may include obtaining predicted substance concentrations of the target substance from a prediction model to generate a mapping of a weighted mean of the plurality of the predicted substance concentrations grouped in a predetermined number of feature groups. A simulated plume model is generated for each emission source present at the site to calculate representative circular normal distributions for each air quality monitor. By performing an analysis of the plurality of representative circular normal distributions in relation to the mapping, a target emission source is identified.

Abstract: In various embodiments, rapid, sensitive detection of molecular hydrogen is achieved by receiving sample gas that includes ambient water vapor and hydrogen, passing the sample gas through a gas dryer, chemically converting hydrogen in the sample gas to water vapor to produce converted sample gas, measuring water vapor in the converted sample gas to produce a water vapor signal, separating the water vapor signal in the time domain into an ambient water vapor signal and a hydrogen-derived water vapor signal, wherein the gas dryer dampens variation in the ambient water vapor signal, and outputting a hydrogen signal that describes molecular hydrogen in the sample gas that is based on the hydrogen-derived water vapor signal.

Abstract: Systems and methods for determining a pre-charge gas pressure in a gas-charged hydraulic accumulator are disclosed. For example, systems and methods for determining pre-charged gas pressure of a gas-charged hydraulic accumulator included as part of a vehicle are disclosed. Further, the present disclosure provides for determining a pre-charge gas pressure of a gas-charged hydraulic accumulator using a position sensor. The accumulator may form part of a hydraulic system used to move one part of the vehicle relative to another.

Abstract: In an analysis of a fluid component using a nanomechanical sensor covered with a receptor, the same receptor is caused to express different response characteristics. In a measuring system of analyzing a response when a sample gas and a purge gas are supplied to a nanomechanical sensor while switching the sample gas and the purge gas, a gas (external gas) different from both gases is mixed into a gas channel and supplied to the sensor for measurement. Since a response characteristic of a receptor is modulated by mixing of the external gas, the object described above is achieved.

Abstract: The invention discloses a parallel device and method for high-precision determination of sulfur solubility under multiple influencing factors, and the device comprises an elemental sulfur absorption system, an elemental sulfur saturation system and a sulfur content determination system. The elemental sulfur absorption system is used to remove the dissolved elemental sulfur in the sour gas. The elemental sulfur saturation system is arranged in parallel to saturate sour gases at different temperatures and pressures at the same time. The elemental sulfur absorption system and the elemental sulfur saturation system are arranged in parallel. The sulfur content determination system is used to determine the total sulfur content of the parallel elemental sulfur saturation system and the elemental sulfur content in the sour gas after absorbing the elemental sulfur under the same conditions.

Abstract: In one illustrative configuration, a method of locating an emission source of a target substance at a site is disclosed. The method may include obtaining predicted substance concentrations of the target substance from a prediction model to generate a mapping of a weighted mean of the plurality of the predicted substance concentrations grouped in a predetermined number of feature groups. A simulated plume model is generated for each emission source present at the site to calculate representative circular normal distributions for each air quality monitor. By performing an analysis of the plurality of representative circular normal distributions in relation to the mapping, a target emission source is identified.

Abstract: A test apparatus can measuring particle plugging of a simulated fracture. The test apparatus can include a first test component having a first surface and a second test component having a second surface. The second test component can be positionable relative to the first test component to create a simulated fracture between the first surface and the second surface. The test apparatus can include a visualization area of at least one of the first test component or the second test component can be positioned between a fluid inlet and a fluid outlet along at least a portion of the simulated fracture.

Abstract: A method includes determining a critical micelle concentration (Ccm assumed) of a sample with an unknown concentration (Cs) of a surfactant based on an assumed surfactant concentration (Cassumed) of the sample, providing a benchmark solution with a known concentration of the surfactant, determining an actual critical micelle concentration (Ccm) of the surfactant from the benchmark solution, and calculating the unknown concentration (Cs) of the surfactant in the sample from the following equation: Cs=Ccm/(Ccm assumed/Cassumed).

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: A system for detecting water in an environment includes a first sensor configured to provide first feedback indicative of a temperature of the environment, a second sensor configured to provide second feedback indicative of a humidity of the environment, and an electronic circuit having a processor configured to execute one or more instructions stored on a memory of the electronic circuit. The one or more instructions are configured to receive the first feedback from the first sensor, receive the second feedback from the second sensor, generate a risk score by comparing the first feedback and the second feedback to baseline data stored on the memory of the electronic circuit, and provide an indication of a water detection event when the risk score is equal to or exceeds a threshold value.

Abstract: A health exposure sensor system includes a housing, a monitoring platform in the housing, and a power source. The monitoring platform includes at least one modular gas sensor, a circuit board having a microcontroller, and data ports for connecting the modular gas sensor to the circuit board. The housing includes manifolds to direct atmospheric air to the modular gas sensor. The modular gas sensor includes a gas detector and a gas sensor circuit board having a gas sensor microcontroller. The gas sensor microcontroller includes at least one on-chip universal asynchronous receiver-transmitter peripheral and at least one on-chip USB peripheral, where both peripherals include input/output functionality and are connected to a single data port interface for external communication. An associated method of operating the same includes selectively enabling individually either the UART peripheral or the USB peripheral via digital I/O configuration of the microcontroller.

Abstract: A method of obtaining a numerical model is disclosed. The numerical model correlates estimated line width values to minimum pressure for gas bubble generation (MPGBG) values. An MPGBG value of each capillary tube in the reference group is measured for a liquid. A nanoparticle composition is deposited, under standard conditions, on substrate(s) from each respective reference capillary tube, to form nanoparticle lines. A line width of each of the nanoparticle lines deposited using each respective reference capillary tube is measured by a microscope apparatus. A numerical model that correlates estimated line width values to MPGBG values for the liquid is calculated.

Abstract: This disclosure relates generally to a method and system for determining viscosity information of fluids. The present disclosure utilizes an intensity modulated continuous wave (CW) laser diode-based PA sensing method to obtain a continuous wave photoacoustic (CWPA) spectra. Through this CWPA spectra, a full width half maximum (FWHM) and a spectral area is determined to obtain the information about the viscosity of fluids. Although, the CWPA based sensing technique is used for distinguishing different types of abnormalities in tissues, so far it is not used for measuring viscosity which is an important thermo-physical property. The viscosity information of the fluids from the normalized Gaussian fitted CWPA spectra is based on a viscosity feature computed from a FWHM, and a spectral area. The viscosity feature improves the good of fit parameter (R2) significantly to 0.98 as compared to the traditional only FWHM based viscosity determination for which R2 is 0.91.

Abstract: A gas leak detector cartridge includes a cartridge housing that is removably installed in a handheld device. The cartridge housing includes a sensor that detects a presence of a contaminant in a sample gas and is connected to a printed circuit board. The cartridge housing also includes a pump positioned in a manifold and introduces a sample gas to the sensor. The sensor is at least partially inserted into the manifold that includes the pump.

Abstract: Provided are apparatuses and methods for rapid viscometry of whole blood, plasma, and/or whole blood during coagulation. The disclosed technology measures the blood viscosity through the full range of flow rates found in the cardio-vascular system. This in vitro test can be performed on fresh or anticoagulated whole blood to predict the flow properties (e.g., viscosity) anywhere in the body from the aorta to the deep veins of the leg. The result is a flow-rate dependent blood viscosity curve (viscosity profile) that helps the clinician predict and manage the patient's vulnerability to thrombosis and embolism, which is of particular relevance to COVID-19 patients and/or ICU patients.

Abstract: A real-time online analysis device for substance pyrolysis, including: a pyrolyzing system (1), a capturing system (2), a testing system (3) and a controlling system (4) is disclosed. The pyrolyzing system (1), the capturing system (2) and the testing system (3) are connected with the controlling system (4). The capturing system (2) has a cooling cavity (22) and a heating cavity (23) inside. The temperature of the cooling cavity (22) ranges from room temperature to ?200° C., and the temperature of the heating cavity (23) ranges from room temperature to 1000° C. A method for real-time online analysis of substance pyrolysis using the device is also disclosed. The present device can provide real-time online pyrolysis, capturing, separation and analysis of substances at a plurality of temperature points or ranges.

Abstract: A method for determining a column-hemispherical permeation radius with time-varying property of power-law cement grout and tortuosity of rock and soil mass is provided, including: acquiring a porosity ? of rock and soil mass and a corresponding permeation coefficient K by geotechnical tests, measuring a groundwater pressure P0 at a grouting point and determining tortuosity ? of rock and soil mass; acquiring an initial consistency coefficient c0, a rheological index n and a time-varying property coefficient k of power-law cement grout with a designed water to cement ratio by rheological tests, and determining the viscosity of water ?w; acquiring grouting parameters, including a grouting pressure P1, grouting time t, a number m of grouting holes of a side surface of a grouting pipe and a grouting hole radius r; and solving a column-hemispherical permeation grouting diffusion radius R considering coupling effect both the tortuosity of rock and soil mass and the time-varying property of power-law cement grout.