A respiratory monitor is disclosed that includes features for conducting multiple pulmonary function tests in a single device and for detecting the presence of nitric oxide in exhaled breath. Also described is a mouthpiece that allows for separate inhalation and exhalation pathways and for filtering inhaled and exhaled breath for predetermined species prior to exhalation into the respiratory monitor. The monitor further allows for wired, wireless and network connectivity and for cloud-based systems for communicating and correlating pulmonary data as well as relevant environmental data and displaying the data for use by patients and health care professionals.

The invention disclosed herein concerns screening and detecting compounds associated with viral replication and use thereof for early detection of a variety of viral infections.

The invention relates to a dosimeter material for ammonia and/or amines, the indicator used, as well as processes for their manufacture and use, in particular for quality control of foodstuffs. The dosimeter material for ammonia and/or amines, in particular in the gas phase, comprises an indicator which undergoes an irreversible color change in the presence of ammonia and/or amines, and an immobilization matrix for the indicator that is permeable to ammonia and/or amines, wherein the immobilization matrix is water-impermeable, and wherein the indicator comprises a phosphorus porphyrin activated by covalent bonding to a silanol group and having the formula porphyrin-P(V)X.sub.3, wherein X is Cl or Br.

A system and a method for breath analysis. The system includes a breath sampling apparatus for collecting substances from the exhalation breath of a test subject; and a sample preparation apparatus for extracting selected analytes. The method includes: placing a sampling disc in the proximity of exhalation openings of a test person; receiving exhalation breath on the sampling disc for a predetermined period of for example about 1 hour; and collecting a sample of substances from the exhalation breath by adsorption on the sampling disc. The adsorbed amount and composition of substances corresponds to the average amount and composition of substances exhaled during a length of time; placing the sampling disc with the collected substances in a desorption vessel; releasing the collected substances from the sampling disc in the desorption vessel by heating in an inert atmosphere; preparing the sample by adsorption of selected analytes among the sample of substances; and analyzing selected analytes by gas chromatography.

[Object] To provide a gas detection method, an information processing apparatus, a method of diagnosing a plant, and a plant diagnosing apparatus that are capable of easily identifying a specific gas species.

[Solving Means] A gas detection method according to an embodiment of the present technology includes: heating a semiconductor sensor that includes an adsorption layer formed of a metal oxide; measuring a resistance value of the semiconductor sensor in an air atmosphere in which a reducing gas is present; and determining, where the measured resistance value is high in a first temperature range and low in a second temperature range higher than the first temperature range with reference to the resistance value of the semiconductor sensor in an air atmosphere in which the reducing gas is not present, that the reducing gas contains a hydrocarbon substance emitted from a plant or an animal.

Provided is a system of measuring exhalation metabolism, in which: a first end of an air pump is connected to an outlet of an organic steam micro-injection module, and a second end of the air pump is connected to a first end of a liner; an air outlet of an individual exhalation imprinting sampling module is connected to a second end of the liner, and a stirrer adsorption extraction rod is provided inside the liner to sample an exhalation metabolite of an experimental animal; the air outlet of the individual exhalation imprinting sampling module is connected to a nozzle interface of an aerosol nozzle, while an air inlet thereof is connected to an air outlet of a zero-level air purifier. The system further includes a gas solenoid valve and an automatic solvent desorption module.

Device for measuring the concentration of gases in exhaled air and measurement procedure used, such device comprising a first air inlet (1), a second air inlet (3) with a nitric oxide filter (4), a pump (5), a nitric oxide sensor (6), a first valve (8) located downstream from the first air inlet (1) and upstream from the sensor (6), a second valve (9) located downstream from the second air inlet (3) and upstream from the sensor (6), a third valve (10) located downstream from the sensor (6) in a first fluid line that conducts air to a first air outlet (12), and a fourth valve (11) located downstream from the sensor (6) in a second fluid line that conducts air to a second air outlet (13), wherein the pump (5) is located in the second fluid line.

A portable system is provided for measuring a ketone, such as an 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 ketone 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 ketone measurements, and may include various features for facilitating the analysis of the measurements.

A method is provided for sensing ammonia in a breath sample. The method comprises conditioning the breath sample so that the conditioned breath sample has a relative humidity greater than a relative humidity corresponding to a first inflection point of a downwardly concave lowest ammonia iso-concentration curve. It also comprises contacting the conditioned breath sample with an interactant that interacts with the ammonia in the conditioned breath sample, wherein the interaction causes a change in an optical characteristic in relation to the amount of the ammonia in the breath sample. It further comprises using the change in the optical characteristic to sense the ammonia in the breath sample. Related apparatuses are also provided.

This disclosure relates to portable devices and methods for detecting and identifying one or more compounds in the breath of a subject. In some embodiments, the devices and methods described herein detect and identify one or more compounds in real time.