A method for detecting chemical vapors includes acquiring an environmental air sample within at least one fielded chemical detector, detecting that at least one chemical from a selected set of possible chemicals is present within the environmental air sample, analyzing data relating to the detecting, determining at least one of a chemical name, a chemical concentration, a chemical category, or a toxicity level, and transmitting the determined information to a central data collection site.

A method for monitoring of gas applied to an electronic device comprises a detecting device including activation of the detecting device to detect a gas concentration of a certain kinds of gas when one or more preset conditions are met. Gas concentration detected by the detecting device is obtained at preset time intervals. A preset warning prompt is transmitted when the obtained gas concentration is greater than or equal to a preset concentration.

Embodiments of the present technology involve integrative single-cell and cell-free plasma RNA transcriptomics. Embodiments allow for the determination of expressed regions that can be used to identify, determine, or diagnosis a condition or disorder in a subject. Methods described herein analyze cell-free RNA molecules for certain expressed regions. The specific expressed regions analyzed were previously determined to be indicative for a certain type of cell or grouping of cells. As a result, the amounts of cell-free reads at the specific expressed regions may be related to the number of cells in a tissue or organ. The number of cells in the tissue or organ may change as a result of cell death, metastasis, or other dynamics. A change in the number of cells in the tissue or organ may then be reflected in certain expressed regions in cell-free RNA.

Systems and methods for generating a Methane number for a compressed natural gas fuel by obtaining compositional data from one or more particular analyzers and applying the obtained compositional data to one or more selectable Methane number generation protocols. The systems and methods can include refining of the compressed natural gas fuel to meet a predetermined Methane number.

A method and system for determining the size of a gas emission expelled from a processing facility includes obtaining gas sensor data from a plurality of gas sensors and wind speed and direction data from at least one weather station located at the processing facility. The wind speed and direction data is correlated with the gas sensor data to triangulate a location of the gas emission. A mean concentration of the gas emission is calculated, and the size of the gas emission is estimated by using at least one of a base calculation model, a gaussian plume (GP) model fit, or an event probability model fit.

A system for determining an event in a cabin of a vehicle includes a gas sensor, a PM sensor, an image sensor configured to generate an image signal corresponding to a captured image of at least a portion of the cabin, and a controller operably connected to the gas, PM, and image sensors. The controller is configured to receive the sensor signals, generate time series datasets of the sensor signals, determine an event in the cabin of the vehicle by analyzing the time series datasets using a machine learning model, and in response to determining the event in the cabin, operate the image sensor to generate image data corresponding to a captured image of at least a portion of the cabin of the vehicle.

Methods, apparatuses, and computer program products for generating optimized emissions quantification are provided. For example, a computer-implemented method may include identifying a first emissions data and a second emissions data associated with a plant. The first emissions data may be associated with first emissions data acquisition level of a plurality of emissions data acquisition levels and the second emissions data may be associated with a second emissions data acquisition level of the plurality of emissions data acquisition levels. The method may further include generating using a reconciliation model and based on the first emissions data and the second emissions data, optimized emissions quantification. The optimized emissions quantification may reflect reconciled emissions data with respect to the first emissions data and the second emissions data.

Method and system for detecting and/or quantifying recent human presence in an environment using a calculated rate of decay of carbon dioxide concentration levels within that environment. A sensor measures the change in carbon dioxide levels over time to calculate the rate of decay to equilibrium and extrapolate recent human presence. Also provided is a method and system for quantifying recent human activity in an environment using the calculated rate of decay to equilibrium.

A tritium-in-air measuring apparatus for measuring a concentration of tritium in air, the measuring apparatus comprising a sensing apparatus for sensing the concentration of tritium in the air and producing at least one signal representing the concentration; a signal processing apparatus, operatively connected to the sensing apparatus, for receiving the signal, processing the signal, and outputting an indication of the concentration of tritium; the sensing apparatus comprising four equal-dimensioned ion chambers, the four chambers being formed in a single block of metal, the four chambers comprising a first measurement chamber, a second measurement chamber, a first compensation chamber and a second compensation chamber.

The present invention is intended to, at the time of directly measuring a flow rate of exhaust gas flowing through an exhaust gas flow path and an air-fuel ratio of the exhaust gas, and on the basis of the flow rate and air-fuel ratio of the exhaust gas, calculating fuel consumption, reduce a measurement error of the fuel consumption. Also, the invention is a fuel consumption calculation unit that, with use of an exhaust gas flow rate obtained by a flow rate sensor provided in an exhaust gas flow path through which exhaust gas of an engine flows, and an air-fuel ratio obtained by an air-fuel ratio sensor provided in the exhaust gas flow path, calculates fuel consumption of the engine, and on the basis of the air-fuel ratio obtained by the air-fuel ratio sensor, changes a value of exhaust gas density used for the calculation of the fuel consumption.