A gas sampler device has a top plate with a concaved outer wall. The concaved outer wall allows users easily to lift the top plate off of the bottom plate without disturbing the bottom plate because the curved surface permits more positive contact between the outer wall and users' fingers. Moreover, the weight of the top plate is reduced by approximately twenty percent compared to conventional top plates, a feature that also makes it easier for users to lift the top plate off of the bottom plate.

Disclosed is a method and a system for efficiently and accurately processing air particulate datasets when facing a high number of air particulate datasets from multiple locations to generate an artificial intelligence model having one or more computer-based rules that determines eligibility of a user to avail a health-related service based on air particulate records associated with current and past locations of the user.

Portable dynamic vapor micro-extraction systems for use in real-time trace vapor collection in the field. The system includes one or more wafer collection modules or cartridges that include a plurality of sample collection capillaries, each cartridge being receivable into an associated vapor collection device of the system, for collecting a vapor sample in the field. The vapor collection device includes a thermoelectric cooler providing a cold plate directly thermally coupled to an installed cartridge. The thermoelectric cooler provides cooling to a temperature below ambient temperature, while vapor sampling occurs. A pump draws the vapor sample through a sample port of the device, and into the received cartridge, such that target molecules to be detected are adsorbed. The system can further include a cartridge storage compartment, for storing the cartridges.

The present invention is related to the field of bio/chemical sensing, assays and applications. Particularly, the present invention is related to collecting a small amount of a vapor condensate sample (e.g. the exhaled breath condensate (EBC) from a subject of a volume as small as 10 fL (femto-Liter) in a single drop), preventing or significantly reducing an evaporation of the collected vapor condensate sample, analyzing the sample, analyzing the sample by mobile-phone, and performing such collection and analysis by a person without any professionals.

A gas-sensing apparatus with gas convection capability includes a gas sensor mounted inside a container, a substrate forming a bottom plate of the container and an actuator. The gas sensor is mounted over a first surface of the substrate internal to the container. The actuator is coupled to a second surface of the substrate external to the container. The actuator can cause convection of a gas within the container by enabling movements of the substrate in response to an activation signal.

A self-timing, passive, chemical dosimeter. The dosimeter includes a sampling media and electronics supported by a cassette. The sampling media is configured to absorb volatile organic compounds, semivolatile organic compounds, or both, while the electronics are configured to record a time of exposure. The dosimeter further includes an actuator having a closed position and an open position. In the closed position, the actuator resists exposure of the sampling media to volatile organic compounds, semivolatile organic compounds, or both, and in the open position, the actuator permits exposure of the sampling media to volatile organic compounds, semivolatile organic compounds, or both. The actuator is configured to operate the electronics for recording time of exposure.

Disclosed is a method for correlating a biomarker in a non-blood bodily fluid with the same biomarker in the blood of an individual, including: measuring, in a first period in time, the biomarker in non-blood bodily fluid and measuring the same biomarker in the blood of the same individual to establish an R ratio of [NBBF1]/[BB1], where [NBBF1] is the biomarker concentration in non-blood bodily fluid in the first period in time, and [BB1] is the biomarker concentration in the blood in the first period in time; storing the ratio in a memory; measuring, in a second period in time, the biomarker in non-blood bodily fluid to determine [NBBF2], where [NBBF2] is the biomarker concentration in the non-blood bodily fluid in the second period in time; and correlating the measured [NBBF2] with the R ratio to generate a correlated [BB2] biomarker concentration in the blood of the individual in the second period in time. Also disclosed is a device, apparatus, and method for correlating the glucose concentration in a non-blood bodily fluid such as saliva with the glucose in the blood of an individual.

A system includes a first and second condensation particle counter, each counter having an inlet port, a growth column, and an optical element for counting particles detected at the respective inlet ports. The counters are configured to include a wick in which the wick is wetted by water. A differential pressure sensor is coupled to the first inlet port and coupled to the second inlet port. The sensor is configured to provide a pressure signal. A processor is coupled to memory and configured to receive the first signal, the second signal, and the pressure signal and generate an output corresponding to a ratio of the first signal and the second signal and correlate the ratio with the pressure signal. A housing is configured to receive the first counter, the second counter, the differential pressure sensor, the processor, and the memory.

Disclosed is a method for correlating a biomarker in a non-blood bodily fluid with the same biomarker in the blood of an individual, including: measuring, in a first period in time, the biomarker in non-blood bodily fluid and measuring the same biomarker in the blood of the same individual to establish an R ratio of [NBBF1]/[BB1], where [NBBF1] is the biomarker concentration in non-blood bodily fluid in the first period in time, and [BB1] is the biomarker concentration in the blood in the first period in time; storing the ratio in a memory; measuring, in a second period in time, the biomarker in non-blood bodily fluid to determine [NBBF2], where [NBBF2] is the biomarker concentration in the non-blood bodily fluid in the second period in time; and correlating the measured [NBBF2] with the R ratio to generate a correlated [BB2] biomarker concentration in the blood of the individual in the second period in time. Also disclosed is a device, apparatus, and method for correlating the glucose concentration in a non-blood bodily fluid such as saliva with the glucose in the blood of an individual.

Wearable pollutant monitoring devices, associated methods of manufacture, and methods for pollution analysis are described herein. The device can concentrate airborne pollutants onto a substrate which can subsequently be analyzed for a broad range of compounds using mass spectrometry (MS) (with or without chromatography), spectroscopy, nuclear magnetic resonance, electronic detectors, or other analytical platforms and biological/environmental assays.