A method for calibrating a device for measuring a mass of fuel carried by an aircraft by: receiving a message containing a reference permittivity, a reference density and a reference volume, determining a first calibration coefficient as a function of the reference permittivity, determining a second calibration coefficient as a function of the reference volume, determining a third coefficient of calibration as a function of the reference density, determining a calibrated mass of fuel as a function of a determined height of fuel corrected as a function of the first calibration coefficient, a volume of fuel determined as a function of the corrected height and corrected as a function of the second calibration coefficient, and a mass of fuel determined as a function of the corrected volume and corrected as a function of the third calibration coefficient.

A method for calibrating a device for measuring a mass of fuel carried by an aircraft by: receiving a message containing a reference permittivity, a reference density and a reference volume, determining a first calibration coefficient as a function of the reference permittivity, determining a second calibration coefficient as a function of the reference volume, determining a third coefficient of calibration as a function of the reference density, determining a calibrated mass of fuel as a function of a determined height of fuel corrected as a function of the first calibration coefficient, a volume of fuel determined as a function of the corrected height and corrected as a function of the second calibration coefficient, and a mass of fuel determined as a function of the corrected volume and corrected as a function of the third calibration coefficient.

Embodiments described herein provide for the flameless premixed combustion of the pyrolysis gases of a milligram-sized sample of solid material in a microscale fire calorimeter (MFC) at high temperatures of combustion and under precisely controlled fuel-to-oxygen ratios. The microscale fire calorimeter (MFC) device and techniques set out herein provide for the generation of fuel gases from solids and the mixing of those fuel gases with oxygen under controlled conditions to obtain precise fuel/oxygen ratios during combustion. Combustion is conducted under flameless, premixed conditions in a rapid test that can generate soot and other products of incomplete combustion, which may then be analyzed to determine their type and nature. This allows for microscale, accurate, and convenient techniques for the generation and determination of the type and nature of combustion species produced over the full range of fire stages from early stage (over-ventilated) fires to late-stage (under-ventilated/high-toxicity) fires.

Systems and methods related to optical nanosensors comprising photoluminescent nanostructures are generally described.

Methods for determining the probability of finding a particular component of a mixture in a fire debris sample, conditioned on membership in each of the at least two distinct classes.

Methods for determining the probability of finding a particular component of a mixture in a fire debris sample, conditioned on membership in each of the at least two distinct classes.

A molecular detection apparatus includes a detector. The detector includes: a vibrator having a piezoelectric member that has a first surface and a second surface, a first electrode connected to the first surface, a second electrode connected to the second surface, and a third electrode connected to the second surface and disconnected from the second electrode; a sensitive film overlapping at least one part of the second electrode and at least one part of the third electrode and configured to change a vibration frequency of the vibrator in response to an interaction with target molecules; and a detection electrode to detect the changed vibration frequency.

An NIR analyzer with the optical probes across a pipe, or in a bypass configuration, after a stabilizer in an oil or condensate production plant. Prior to use, liquid samples from the plant are analyzed in a chemical lab to obtain reference vapor pressure or compositional values. A chemometric model using known techniques is then built with the captured absorption spectra and the reference lab results. Preprocessing methodologies can be used to help mitigate interferences of the fluid, instrument drift, and contaminate build up on the lenses in contact with the fluid. The chemometric model is implemented through the NIR analyzer as the calibration curve to predict the vapor pressure or other values of the flowing fluid in real time.

An NIR analyzer with the optical probes across a pipe, or in a bypass configuration, after a stabilizer in an oil or condensate production plant. Prior to use, liquid samples from the plant are analyzed in a chemical lab to obtain reference vapor pressure or compositional values. A chemometric model using known techniques is then built with the captured absorption spectra and the reference lab results. Preprocessing methodologies can be used to help mitigate interferences of the fluid, instrument drift, and contaminate build up on the lenses in contact with the fluid. The chemometric model is implemented through the NIR analyzer as the calibration curve to predict the vapor pressure or other values of the flowing fluid in real time.

An automated wetstock management system can include a plurality of sensors disposed in a fuel storage facility, the plurality of sensors configured to sense fuel data characterizing one or more aspects of the fuel storage facility, and a wetstock management server communicatively coupled to the plurality of sensors. The wetstock management server can process the fuel data to detect whether the fuel data satisfies an exception indicative of an operational issue of the fuel storage facility based on one or more predefined rules or models stored in the wetstock management server. In some embodiments, the wetstock management server can generate a workflow for assisting a user of the fuel storage facility to resolve the operational issue. In some embodiments, the wetstock management server can assign a risk category to the exception and electronically transmit an alert characterizing the operational issue to the user.