A method for collecting an aircraft cabin representative biological sample from an aircraft HEPA (high efficiency particulate air) filter including collecting a used HEPA filter after flight, transferring the HEPA filter to a remote location, processing the HEPA filter in order to remove an air sample, and concentrating the collected sample to be used on a pathogen identifying tester.

An apparatus for controlling alcohol interlock includes a sensor that senses an environment of a driver's seat and a camera that obtains a face image of a passenger and an image of exhalation of the passenger. A controller activates a start lock mode of a vehicle and determines whether a condition for detecting components of the exhalation of the passenger is satisfied based on the environment of the driver's seat. The controller determines whether the exhalation of the passenger is exhalation of a driver based on the face image of the passenger and the image of the exhalation of the passenger, and determines whether to detect alcohol concentration in the exhalation of the passenger based on the determination result.

A method for detecting viral or bacteriological pathogens is disclosed. The method comprises collecting a potentially pathogenic sample via a collector, binding a first portion of the potentially pathogenic sample to a magnetic particle via a first coating on the magnetic particle, binding a second portion of the potentially pathogenic sample to a fluorescently labeled particle via a coating of a second coating on the fluorescently labeled particle to create aggregates comprising the potentially pathogenic sample, magnetic particle, and the fluorescently labeled particle, separating the aggregates magnetically, detecting a fluorescence of the separated aggregates, and estimating an amount of the pathogen based on the detected fluorescence.

Methods, apparatuses, and systems associated with aerosol collection devices (such as, but not limited to, breath-aerosol collector devices, breathalyzers) are provided. An example aerosol collection device includes a sample transfer adapter configured to receive a sample and a device body connected to the sample transfer adapter. In some examples, the device body defines a flow channel that guides the sample to a filter component, and the filter component contains a buffer solution.

A collection device includes a container that retains a collection liquid and that has a channel through which intake gas travels above the collection liquid retained, and a rotating body that is provided inside the container and that rotates around a rotation axis extending in a direction intersecting an up-down direction. The rotating body has a first blade that protrudes in a direction intersecting the rotation axis. The first blade has a filter that captures a target object included in the intake gas. The filter moves, along with rotation of the rotating body around the rotation axis, from a position inside the channel to a position immersed in the collection liquid. Thereby, the collection device collects, into the liquid, the target object included in the intake gas.

The invention provides articles, devices, and methods for sampling respiratory droplets, the article comprising a material capable of adsorbing or absorbing respiratory droplets such that the contents of said respiratory droplets can be recovered for analysis. The invention allows respiratory droplets to be collected directly from any source of moisture and commonly-used devices, for example face masks and air handling systems.

Techniques for determining a volume of exhaled CO.sub.2 as a function of time using side-stream capnography, including obtaining flow dynamics measurements of a subject from a flow sensor; obtaining CO.sub.2 concentration measurements of the subject from a side-stream CO.sub.2 monitor; determining a duration of time (ΔT.sub.sl) for a sample of gas to flow from a reference point to the side-stream CO.sub.2 monitor; synchronizing in time the CO.sub.2 concentration measurement with the flow dynamics measurement, based on the determined ΔT.sub.sl; and determining a volume of CO.sub.2 exhaled as a function of time, based on the flow dynamics measurement and the synchronized CO.sub.2 concentration measurement.

Analysis of a breath sample is a noninvasive point-of-care tool with ever increasing screening and clinical applicability. Herein we describe a method to analyze the content of low-level, trace volatile organic compounds from alveolar breath captured as a breath sample from a patient suspected of having a disease related to coronavirus infection. The breath sample is then analyzed using a gas phase analysis methodology, such as gas chromatography-mass spectroscopy (“GCMS”), to generate an analysis result, such as a GCMS spectrum. A computer system is then used to develop a fingerprint pattern from the analysis result. The fingerprint pattern is then used to determine a patient status for the patient. The fingerprint pattern is typically a grouping of 75 to 450 compounds of known concentration which are indicative of a particular disease related to coronavirus.

The invention relates to a system for breath test of a person. It includes a sensor unit configured to sense the presence/concentration of a volatile substance, e.g. alcohol, present in air flowing through a predefined inlet area and generating a signal corresponding to the concentration of said substance. An analyzer determines the concentration of said substance in the breath of said person. It comprises means for the temporary interruption of said air flow at a point in time coinciding with the detection of a breath. It also relates to a method comprising interrupting the flow through said predefined area for a predetermined period of time, and detecting the concentration of said substance during said interruption.

An exhaust gas dilution device according to an exemplary embodiment of the present invention includes a head part, ejector unit, a nozzle part, and a dilution part. The head part has a space part into which an exhaust gas flows and a through-hole formed through the center axis direction to be connected to the space part. The ejector unit is coupled to the head part and has a first discharge hole formed passing through the center axis direction to be connected to the through-hole and connected to a first inlet to which primary dilution air is supplied. The nozzle part is inserted into a first discharge hole through the through-hole and has a second discharge hole that penetrates in the center axis direction so that the exhaust gas flowed into the space part is sucked and ejected into the first discharge hole as the primary dilution air moves through the first discharge hole. The dilution part has a first flow path part into which a primary dilution gas, which is generated and discharged after the exhaust gas and the primary dilution air are mixed in the first discharge hole, flows, and a second flow path part connected to the first flow path part and guiding secondary dilution air to be mixed with the primary dilution gas, and generates a secondary dilution gas as the primary dilution gas and the secondary dilution air are mixed.