A set of volatile organic compounds is provided, comprising Benzene, 2,3,4-trimethyl-Pentane, 1,4-dimethyl-, trans-Cyclohexane, 2,2,4-trimethyl-Hexane, 1,7,7-trimethyl-Tricyclo[2.2.1.0(2,6)]heptane, and 4-ethyl-3-Octene for breath analysis. Methods of identifying these VOCs and use thereof in diagnosing, monitoring the onset of pulmonary toxicity are also disclosed.

A method and apparatus for carrying out measurements on single cells, either one or many single cells at a time in order to characterize the cellular response to stimuli in a perfused liquid. The apparatus for performing the respirometry includes a double-barrel pipette probe.

The invention relates to a system and micro monitor apparatus, a space-, time-, and cost-efficient device to concentrate, identify, and quantify organic compounds in gas environments. The invention further relates to a method centered on gas chromatography for identifying and quantifying organic compounds in gas environments, using air as the carrier gas, without the need for a compressed pre-bottled purified carrier gas.

A portable electronic device comprises a chemical sensor that is sensitive to a concentration of a chemical analyte and at least two auxiliary sensors that are sensitive to parameters that are different from the concentration of the chemical analyte. The portable electronic device comprises a control device that receives signals from the chemical sensor and from the auxiliary sensors at a plurality of points in time distributed over a measurement period and correlates the time dependencies of these signals to obtain a corrected reading of the first chemical sensor. The portable electronic device may be employed for breath analysis.

A method for selecting a food product for a subject having dysphagia comprising: (a) administering one or more food products comprising a volatile compound to the subject; (b) detecting release of the volatile compound in exhaled breath of the subject during and/or after swallowing of the one or more food products; (c) selecting the food product based on the release of the volatile compound in exhaled breath of the subject.

A portable system is provided for measuring an analyte, such as acetone, in the breath or other bodily fluid of a user. The system includes a portable measurement device that analyzes fluid samples and generates corresponding measurements. The portable measurement device communicates with an application which runs on a smartphone or other mobile device of the user. The application tracks, and generates graphs of, the measurements, and may include various features for facilitating the analysis of the measurements.

The device, e.g., sensing cartridge, includes a first member, a second member coupled to the first member, a third member coupled to the second member, and a fourth member coupled to the third member. The first member is configured to separate plasma from whole blood, where the whole blood has a cellular component with a hydrodynamic diameter greater than 0.01 ?m. The second member is configured to wick the plasma from the whole blood, where the second member acts on ammonium in the plasma to shift a phase equilibrium of the ammonium to ammonia gas. The third member is configured to prevent liquid permeation produced by the shift in the phase equilibrium of the ammonium to the ammonia gas. The fourth member is configured to act on the ammonia gas.

A method comprising at least one light source configured to generate a light of at least one wavelength and project the light over an optical path, a sample device, the device containing a sample obtained from exhalation of a person, a vortex mask configured to receive the light after the light passes through at least a portion of the sample device, the vortex mask including a series of concentric circles etched in a substrate, the vortex mask configured to provide destructive interference of coherent light received from the at least one light source, a detector configured to detect and measure wavelength intensities from the light in the optical path, the wavelength intensities being impacted by the light passing through the sample, the detector receiving the light that remained after passing through the vortex mask, and a processor configured to provide measurement results based on the wavelength intensities.

The device, e.g., sensing cartridge, includes a first member, a second member coupled to the first member, a third member coupled to the second member, and a fourth member coupled to the third member. The first member is configured to separate plasma from whole blood, where the whole blood has a cellular component with a hydrodynamic diameter greater than 0.01 ?m. The second member is configured to wick the plasma from the whole blood, where the second member acts on ammonium in the plasma to shift a phase equilibrium of the ammonium to ammonia gas. The third member is configured to prevent liquid permeation produced by the shift in the phase equilibrium of the ammonium to the ammonia gas. The fourth member is configured to act on the ammonia gas.

A system for detecting unsafe equipment operation conditions using physiological sensors includes a plurality of wearable physiological sensors, each physiological sensor of the plurality of wearable physiological sensors configured to detect at least a physiological parameter of an operator of an item of equipment, and a processor in communication with the at least a physiological sensor and designed and configured to determine an equipment operation parametric model, wherein the equipment operation parametric rule relates physiological parameter sets to equipment operation requirements, detect using the equipment operation parametric model and the plurality of physiological parameters, a violation of an equipment operation requirement, and generate a violation response action in response to detecting the violation.