A ventilation system includes an electrochemical filter for depleting alkyl phenols, especially 2,6-diisopropyl phenol, in breathing gas. A method uses the filter for removing alkyl phenols, especially 2,6-diisopropyl phenol, from breathing gas.

Chalcogenide waveguides with high width-to-height aspect ratios and a smooth exposed surfaces can serve as mid-infrared evanescent-absorption-based sensors for detecting and identifying volatile organic compounds and/or determining their concentration, optionally in real-time. The waveguide sensors may be manufactured using a modified sputtering process in which the sputtering target and waveguide substrate are titled and/or laterally offset relative to each other and the substrate is continuously rotated.

An in-vehicle sensing module for monitoring a vehicle is disclosed, which is advantageous for use in the context of a shared vehicle service, such as a car rental service, an autonomous taxi service, or a ride sharing service. The in-vehicle sensing module at least includes a controller, a cellular transceiver, and one or more integrated sensors configured to monitor a status of the vehicle. The in-vehicle sensing module utilizes appropriate algorithms, models, or thresholds to interpret sensor data and enrich the data with metadata and event detection. The in-vehicle sensing module uploads relevant sensor data, event data, or other metadata to a cloud storage backend, which is made accessible by authorized third-parties.

A method for using a chemical capture system with integrated calibration having a chamber which comprises an opening and a closing member, as well as a chemical sensor to be calibrated and a photoionization sensor which are positioned in the chamber, in which method: —during a measurement step, the sensor to be calibrated and the photoionization sensor measure the gas mixture present in the chamber, defining an open interior space, so as to identify the gas mixture and —during a calibration step, the photoionization sensor generates ozone by photoionizing the dioxygen in the chamber, defining a closed interior space free of gas mixture, and the sensor to be calibrated measures the generated ozone, the difference between said measurement and a reference measurement making it possible to calibrate said sensor.

A method of manufacturing a gas sensor for detecting xylene is provided. A method of manufacturing a gas sensor includes reacting a mixed material including a first material containing a cobalt (Co) element and a second material containing a chromium (Cr) element to form a CoCr.sub.2O.sub.4 hollow structure having a hollow shape.

The invention relates to a mass spectrometer, a mass spectrometry method and a detection system. The mass spectrometer includes a vacuum chamber having a working pressure being 0.1 Pa≤P≤10 Pa; a linear ion trap, arranged in the vacuum chamber, wherein a field radius r of the linear ion trap is r≤5 mm; and a power supply, configured to provide a radio-frequency voltage for the linear ion trap, a frequency f of the radio-frequency voltage being 2 MHz≤f≤10 MHz. Because a vacuum level is relatively low, this vacuum condition may be realized by selecting a roughing pump for evacuating; and compared with a combined pump unit which is generally selected by a traditional mass spectrometer using the linear ion trap and is composed of a turbo molecular pump and a roughing pump, the roughing pump has a lower pumping speed, smaller size and lower manufacturing cost.

The present disclosure is directed to a gas sensor that includes an active sensor area that is exposed to an environment for detection of elements. The gas sensor may be an air quality sensor that can be fixed in position or carried by a user. The gas sensor includes a heater formed above chamber. The gas sensor includes an active sensor layer above the heater that forms the active sensor area. The gas sensor can include a passive conductive layer, such as a hotplate that further conducts and distributes heat from the heater to the active sensor area. The heater can include a plurality of extensions. The heater can also include a first conductive layer and a second conductive layer on the first conductive layer where the second conductive layer includes a plurality of openings to increase an amount of heat and to more evenly distribute heat from the heater to the active sensor area.

One mode is a method for the structural analysis of an organic compound by MALDI mass spectrometry, including: a sample preparation process (S1) which includes preparing a sample by mixing a specimen containing an organic compound to be analyzed with a predetermined matrix at a mixture ratio within a range from 1:5 to 1:5000 in molar ratio; a mass spectrometry process (S3) which includes irradiating the prepared sample with a laser beam having a spot size equal to or smaller than 15 μm to generate ions originating from a component of the specimen in the sample, and performing a mass spectrometric analysis of the generated ions; and an analyzing process (S4) which includes detecting, from a mass spectrum acquired in the mass spectrometry process, ions including product ions resulting from in-source decay, and estimating the structure of the organic compound to be analyzed based on information concerning the ions.

Provided is a stress measurement system and a stress measurement method that are capable of measuring the stress level of a subject without taking time and effort. A stress measurement system 1 includes a sensor unit 31 that detects a plurality of detection target gases based on substances contained in a specimen of a subject and outputs a plurality of detection values corresponding to respective detection results of the plurality of detection target gases, and a control unit that determines a stress level of the subject, based on a combination of the plurality of detection values. In addition, the substances contained in the specimen may include a substance serving as a raw material for a brain neurotransmitter.

A method for determining the level of contamination in cities comprising the steps of providing a server, transmitting information from users which report contamination issues by means of a mobile electronic device to the server, providing a wireless sensor network (WSN) for measuring level of contamination, obtaining measured data tagged with a geo-reference tag and a time stamp, and configured for supporting delay-tolerant communications transmitting data measured from sensors to the server, processing data measured and information from users by using big data and machine learning algorithms, and providing reports on contamination levels; and a system for collecting and processing environmental information comprising at least one mobile electronic device, including at least one environmental sensor, at least one wireless communication interface, a geo-location unit, and a storage unit; at least one communication gateway and at least a server for storing and processing the information obtained.