Abstract: Provided is a chromatography system including a usage information storage device, a column usage information holding part, and a usage information managing part. The usage information storage device is provided corresponding to the analytical column incorporated in the chromatography system and is configured to keep usage information for each corresponding analytical column. The column usage information holding part is provided separately from the analytical column and is configured to keep usage information for each of the analytical columns which may be incorporated in the chromatography system. The usage information managing part is configured to update, at a timing when an analysis process of separating a sample injected into the analysis channel using the analytical column is executed, the usage information kept by the usage information storage device and the usage information kept by the column usage information holding part in association with the analytical column to latest usage information.

Abstract: A light source emits excitation light to discharge gas that flows through a dielectric tube. A ground electrode unit includes a first ground electrode and a second ground electrode arranged at a distance from each other in an axial direction of the dielectric tube. A high-voltage electrode is provided between the first ground electrode and the second ground electrode. A first distance between the first ground electrode and the high-voltage electrode is shorter than a second distance between the second ground electrode and the high-voltage electrode. A cover is provided on an outer wall of the dielectric tube at a position between the first ground electrode and the high-voltage electrode. The light source is arranged to emit excitation light such that an optical axis thereof is directed toward a position where the cover is not provided on the outer wall of the dielectric tube.

Abstract: The invention relates to a breath sensing devices for a portable apparatus, in particular a portable telecommunication device or a wearable device, the sensing device comprising an acoustic wave sensing means, like a microphone; and a gas sensing means, The invention furthermore relates to an electronic device comprising such a sensing device. In addition, methods are provided that allow calibrating a gas volume based on an output signal of an acoustic wave sensing means.

Abstract: The present invention relates to an analysis system that is applied to rapid automatic analysis and detection of highly lipophilic components and a method for rapidly detecting vitamin D in an oil or fat, or a biological sample. In the present invention, online pretreatment and separation of a sample containing highly lipophilic components in a sample to be analyzed are performed by a multidimensional chromatography system. The multidimensional chromatography system includes a supercritical chromatography part and a reverse phase liquid chromatography part sequentially connected, the reverse phase liquid chromatography part including one or more reverse phase liquid chromatography columns, and the supercritical chromatography part including a supercritical mobile phase, a modifier, and a supercritical packed column.

Abstract: Techniques disclosed herein can be used to perform a rapid, splitless injection of a sample including SVOCs and VOCs. In some embodiments, a system includes two focusing traps combined in series, one inside of a GC oven and one in a separate oven to concentrate the SVOCs inside of the GC oven and concentrate the VOCs outside of the GC oven. Heating the VOC focusing trap and reversing the flow through both focusers allows splitless injection of compounds boiling from as low as ?100° C. to as high as 600° C. in a single analysis, with a narrow injection bandwidth to optimize both sensitivity and the resolving power of the analyzer.

Abstract: The invention relates to a device and a method for analyzing a substance (5), comprising an excitation transmitting device in the form of a laser device (3) for generating at least one electromagnetic excitation beam (8), a measuring body (1) having a detection region (4), which is adjacent to a measuring surface (2) of the measuring body (1) and has a pressure-dependent or temperature-dependent specific electrical resistance and/or generates electrical, in particular piezoelectric, voltage signals in the event of pressure or temperature changes, and comprising a device for analyzing the substance on the basis of detected signals.

Abstract: To suppress the influence of heat from an interface part on temperature control of a separation column and also to suppress the influence of room temperature fluctuation outside a main body.

Abstract: Disclosed is a micro gas chromatography system including a fluid feeder for feeding a fluid composed of a carrier gas and a gas mixture containing an analyte component to the next stage, a micro gas preconcentrator chip configured to concentrate and desorb the analyte component contained in the fluid, a micro gas chromatography chip including a micro separation column for separating the analyte component concentrated and desorbed by the micro gas preconcentrator chip, and a micro sensing unit including a micro thermal conductivity detection sensor configured to detect the analyte component separated by the micro gas chromatography chip.

Abstract: The present disclosure provides a system, method, and apparatus for detecting chemical effluents in an environment using Teslin substrates. To illustrate, a system includes one or more Teslin substrates which can capture molecules present in an ambient environment. The system includes a housing with the one or more Teslin substrates disposed within the housing. The system further includes means for selectively exposing different portions of the one or more Teslin substrates to the ambient environment, in which the molecules present in the ambient environment are captured by the different portions of the one or more Teslin substrates as the different portions of the one or more Teslin substrates are exposed. The system can include that the means for selectively exposing different portions of the one or more Teslin substrates is an aperture in the housing.

Abstract: A sample can be collected from an enclosed container by opening a sample collection valve and drawing the sample from the enclosed container. After delivery of the sample out of a fluid flow path, a sanitizing fluid can be directed along the fluid flow path to sanitize the fluid flow path.

Abstract: The embodiments of the present disclosure provide a method and an Internet of Things (IoT) system for managing dust pollution in a smart city. The method may be executed by a management platform, the method may include: obtaining one or more environmental data of the area to be detected through the sensing network platform, and obtaining one or more street data associated with the environmental data, the environmental data at least including dust data indicating dust information in the air; determining whether there is dust pollution in the area to be detected based on the environmental data; and in response to the determining that there is dust pollution in the area to be detected, determining a position of at least one dust pollution source based on the environmental data and the street data, and treating the dust pollution.

Abstract: The present disclosure related to a method for screening compounds having the ability to prevent, treat or reduce malodor development on body surfaces. In particular, the method screens for compounds having the ability of preventing sweat malodor development caused by malodor causing volatile acid compounds and/or malodor causing volatile sulphur compounds. The present disclosure is based on a sensitive analytical method to determine the presence of the precursors of malodor causing volatile acid compounds and/or malodor causing volatile sulphur compounds present in sweat, which are metabolised by bacteria, such as, for example, Cornebacteria or Staphylococci to malodor causing volatile acid compounds and malodor causing volatile sulphur compounds.

Abstract: A sampler for liquid chromatography is described. The sampler includes an injection valve and a sample loop. The injection valve includes one waste port, two sample loop ports, and two high-pressure ports. The sample loop port includes a first loop part and a second loop part. The injection valve can be configured to have LOAD position and INJECT position. The injection valve can also be configured to have one or more additional positions such as a FULL PURGE position, a PUMP PURGE position, and a NEGATIVE PRESSURE position.

Abstract: A gas chromatography analysis method includes separating a component in sample gas by introducing the sample gas into a separation column (4) using carrier gas, and detecting a component in sample gas that has passed through the separation column (4) by introducing the sample gas into a detector (6). The detecting includes individually taking out hydrogen gas and oxygen gas generated by electrolysis of water, and controlling flow rates of taken-out hydrogen gas and oxygen gas and supplying the taken-out hydrogen gas and oxygen gas to the detector as detector gas.

Abstract: A filter device including a probe where a filter element probe first end selectively engages with a sensing unit located in a filter head and a filter element probe second end is located in a contaminant portion of a filter canister. The probe fixedly engages through the filter element utilizing a sealing component. The filter element is disposed in the filter canister that engages with the filter head.

Abstract: A data structure includes a main data storage area in which main data is stored, and an odor data storage area in which odor data is stored. The odor data is based on a measurement result of an odor in air measured by an odor sensor. The odor data storage area stores a plurality of pieces of the odor data. The main data storage area includes a main data ID area for storing a main data ID indicating that the stored data is the main data. The odor data storage area includes an odor data ID area for storing an odor data ID indicating that the stored data is the odor data.

Abstract: Microfabricated PM sensors measure concentrations of particulate matter (PM) in air. Some sensors improve the accuracy of measurements by accounting for the effect of ambient conditions (e.g., temperature or humidity) on mass-sensitive elements employed to determine a mass of the PM in a stream of air. Some sensors improve the accuracy of measurements by controlling humidity in the stream of air measured by mass-sensitive elements. Some sensors employ a plurality of mass-sensitive elements to extend the useful life of the PM sensor. Some sensors employ one or more mass-sensitive elements and heating elements to cause deposition and allow measurement of different sizes of PM. Some sensors can measure mass concentration of coarse PM in addition to fine PM in a stream of air. Some sensors control the flow rate of a stream of air measured by mass-sensitive elements. Some sensors include features to mitigate electromagnetic interference or electromagnetic signal loss.

Abstract: A device and method for testing an effective diffusion coefficient of helium in helium-bearing natural gas solves the problem that there is currently no systematic method or supporting experimental device to quantitatively characterize the diffusion behavior of helium in helium-bearing natural gas. The device includes a diffusion system and a gas sampling and analysis system. The diffusion system includes an upstream diffusion chamber, a downstream diffusion chamber, and a true triaxial apparatus, and is configured to simulate a gas diffusion process. The gas sampling and analysis system includes an upstream gas sample retention chamber, a downstream gas sample retention chamber, and a chromatographic analyzer, and is configured to sample a diffusing gas and analyze composition of the gas. By performing diffusion process simulation, gas sampling and analysis, and data calculation and fitting, the effective diffusion coefficient of helium in the helium-bearing natural gas is finally acquired.

Abstract: A response factor that is a signal strength ratio with respect to a reference compound for various compounds is previously stored in a response factor storage (22). When an operator instructs to estimate an analysis limit value, a measurement unit (1) performs GC-MS analysis on a sample containing the reference compound a plurality of times under control of an analysis controller (3). A signal strength calculator (23) obtains a signal strength value of the reference compound based on an analysis result of the measurement unit (1), a relative strength calculator (24) calculates a relative standard deviation from the plurality of measured signal strength values, and calculates the relative standard deviation of a target compound from the response factor of the target compound read from the response factor storage (22).

Abstract: A high throughput gas-chromatography system for analysis of high-molecular weight additives in a polymer material, and an analysis method using same are provided. A high throughput gas-chromatography system is capable of qualitatively and quantitatively analyzing, at the same time, high-molecular weight additives in a polymer, and reducing analysis time by increasing a heating rate and a column maximum temperature.