Abstract: A system, device, and method for leak detection and monitoring. The system includes a plurality of gas sensors with wireless connectivity adapted to be distributed over an area of interest that contains a suspected gas leak. An aggregator aggregates leak detection data obtained from the plurality of gas sensors. At web-based user interface allow viewing of the data on any of various non-specific electronic devices. The user interface is simultaneously accessible on a plurality of wireless mobile devices. A wireless local area network, such as a mesh network with the sensors as nodes, interconnects each of the plurality of gas sensors and the aggregator.

Abstract: A musical comb for a striking mechanism of a timepiece includes several tines connected to a heel for securing the comb inside the timepiece. The musical comb further includes grooves in the heel each extending into the extension of each space between the adjacent tines in order to eliminate any dissonance during actuation of the tines.

Abstract: Methods for classification of hydrocarbon mixtures that include performing two-dimensional gas chromatography on a hydrocarbon mixture to obtain a chromatogram using a two-dimensional gas chromatograph equipped with a flame ionization detector, a reversed phase column configuration with a primary mid-polar or polar column and a secondary non-polar column, and a standard mixture. Classification is performed in which groups of hydrocarbons are identified and labeled based on peaks associated with the standard mixture, after which a quantification process is performed.

Abstract: A portable gas analysis device having a separating column and a detector. The separating column is composed as a multi-capillary unit from parallel individual capillaries and, depending on the length, is bent into a compact shape, preferably even wound into multiple turns. A thermally conductive casing and a thermal stabilizing device are provided for the multi-capillary unit. The thermal stabilizing device comprises a temperature sensor, a heating element and control electronics. The casing protects the sensitive multi-capillary unit from mechanical actions; it acts as a protective space. The temperature-controlled casing also forms a space in which uniform and controlled conditions prevail and which in particular is isolated from the temperature and humidity of the environment, allowing reliable measurements outside a laboratory environment, in the field. This double effect of the casing for the capillaries in conjunction with the compact dimensions forms the true essence of the invention.

Abstract: The invention relates to a sensor device (1) for detecting a gas (G), particularly a permanent gas such as H2, CO, CO2, CH4, comprising: an adsorption filter (30) comprising a body (2) consisting of a molecular sieve material, a sensing element (10) for detecting said gas (G), and a carrier (4) for carrying the sensing element (10), wherein the carrier (4) comprises an opening (50) via which said gas (G) to be detected can reach the sensing element (10), and wherein the adsorption filter (30) is connected, particularly glued, to the carrier (4) and closes said opening (50) so that said gas (G) to be detected can diffuse through said body (2) towards the sensing element (10).

Abstract: To estimate penetration behavior of hydrogen up until hydrogen content reaches saturation even if load stress on steel is equal to or higher than threshold stress.

Abstract: A method for analysing a crude oil to determine the amount of organic acid compounds contained in the crude oil includes extracting the organic acid compounds from a sample of crude oil to form an extract and determining the amount of the extracted organic acids In addition, the method includes dissolving the extract in a polar solvent to form a solution of the extracted organic acid compounds Further, the method includes introducing a sample of the solution of the extracted organic acid to an apparatus including a reversed phase liquid chromatography (LC) column and a mass spectrometer (MS) arranged in series. The reversed phase LC column contains a hydrophobic sorbent and the mobile phase for the LC column includes a polar organic solvent.

Abstract: A multi-angle multi-wave array may comprise a first set of sensing elements, a second set of sensing elements, and a third set of sensing elements wherein the first set of sensing elements, the second set of sensing elements, and the third set of sensing elements are collectively configured to detect and discriminate between categories of foreign object debris including solid objects and particulates including silicate sand, water vapor, dust, volcanic ash, and smoke.

Abstract: A fluidic device includes at least one bulk acoustic wave (BAW) resonator structure with a functionalized active region, and at least one first (inlet) port defined through a cover structure arranged over a fluidic passage containing the active region. At least a portion of the at least one inlet port is registered with the active region, permitting fluid to be introduced in a direction orthogonal to a surface of the active region bearing functionalization material. Such arrangement promotes mixing proximate to a BAW resonator structure surface, thereby reducing analyte stratification, increasing analyte binding rate, and reducing measurement time.

Abstract: A system/component for a vehicle interior configured to administer a dose of radiation to an object is disclosed. The system/component may comprise a base providing a compartment, a cover, a module comprising a radiation source and a control panel providing a user interface. The radiation source may administer radiation to the object; the user interface may be configured for operation of the module; the user interface may provide a signal; the signal may comprise an audible signal and/or a light signal. The radiation source may comprise an ultraviolet light source. The system may be operated according to a control program. The compartment may contain the object and the light source may comprise an LED arrangement to direct light onto the object in the compartment. The dose of radiation may be intended to sanitize biomatter. A method of operating the system/component is also disclosed.

Abstract: The present invention relates to a preconcentrator for vapors and particles collected from air. The vapor preconcentrator is made from plural layer of coils. The coil is made of resistance alloy. The pitch size of the coil is made to precisely trap/filter out certain size of the particles during preconcentration. Multiple coils could be made with different pitch sizes to achieve multiple step filtrations. When the sample flow enters the preconcentrator chamber, it passes through the coils. The particles of different sizes are trapped on different layer of coils. The vapor sample can be trapped on any coils when interacted with the coil surface. They could be trapped without any affinitive coating as the preconcentrator is at relatively low temperature. Different coils or different sections of the coil can be coated with different material to trap chemicals of different classes.

Abstract: A portable, compact, real-time and accurate sensor and method for deriving a physicochemical property of a liquid fuel, such as cetane number, carbon content, carbon/hydrogen (C/H) atomic ratio, or heating value (net heat of combustion). The sensor comprises a constant-volume ignition chamber equipped for measuring ignition delay and magnitude of a peak rise in pressure or temperature following dispensation of a liquid fuel into the chamber. The sensor utilizes air at atmospheric pressure and microliter quantities of fuel. The sensor can be implemented in real-time refinery operations for blending diesel fuels that meet government mandated cetane number standards as well as in applications for standardizing jet, biodiesel, and synthetic fuels, which presently are not classified by any physicochemical property.

Abstract: An evaporation closed chamber for detecting hazardous substance, having a closed chamber, an orifice plate, a pressure plate, a drive device and an elastic film, the orifice plate is mounted on any surface(s) of the closed chamber, the elastic film is arranged on the outer side of the orifice plate, the pressure plate is arranged on the outer side of the elastic film, and the drive device is in transmission connection with the pressure plate to drive the pressure plate to move forwards and backwards to press the elastic film against the orifice plate. The elastic film expands with the increase of internal temperature of the closed chamber and shrinks with the temperature decrease of the closed chamber such that the gas in the closed chamber can be timely compensated; the orifice plate prevents hazardous substance from leaving on the gas compensation device to influence test accuracy.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for monitoring slug flow in subterranean wells. In one aspect, a method includes at a time instant, transmitting an acoustic signal across a cross-section of a pipeline flowing multiphase fluid including gaseous fluid and liquid fluid, wherein a portion of the acoustic signal is carried through the cross-section of the pipeline by the multiphase fluid and determining, at the time instant, a first quantity of the gaseous fluid and a second quantity of the liquid fluid passing the cross-section of the pipeline based, in part, on an energy of the portion of the acoustic signal carried through the cross-section and at least a portion of a total energy of the transmitted acoustic signal.

Abstract: One embodiment is a book includes a plurality of pages, a plurality of magnets, and a sensor. The plurality of the magnets generate a combined magnetic field strength, which is variable depending on positions of the pages on which the magnets are disposed. The sensor senses the combined magnetic field strength and generates a varying signal based on a varying of the combined magnetic field strength when at least one page is moved. The varying signal indicates a position of at least one page in the book.

Abstract: Methods and systems are provided for sensing particulate matter by a particulate matter (PM) sensor positioned upstream, or downstream, of a diesel particulate filter in an exhaust system. The PM sensor may include first and second conductive matrixes each having a three dimensional shape. The first matrix functions as a positive electrode, and the second functions as a negative electrode. Each matrix defines extensions and/or passages passing respectively through, and/or near, each other to form multiple soot capturing gaps. A first of the multiple soot capturing gaps is oriented orthogonal to a second of the multiple soot capturing gaps.

Abstract: Provided is a medium evaluation method for evaluating the suitability of a medium in which cell aggregates are cultured in a suspended state, by which an evaluation of whether a medium is adequate for both the cell retention performance and the cell recovery efficiency, the medium evaluation method including dispersing a plurality of particles in a medium, measuring a sedimentation velocity by which the particles settle in the medium, and using the sedimentation velocity thus measured as an index value indicating the suitability of the medium; and also provided are a medium and a culture method.

Abstract: There is provided an automated system for preparing tissue samples that comprises one or more microtomes, a hydration system, and a processor, the processor being programmed to initiate facing, by one or more microtomes, of a first tissue block comprising a first tissue sample embedded in an embedding material, and cause the first tissue block to be hydrated by the hydration system for a first predetermined time, and initiate facing, by one or more microtomes, of a second tissue block while the first tissue block is being hydrated, the second tissue block comprising a second tissue sample embedded in an embedding material, and cause the second tissue block to be hydrated by the hydration system for a second predetermined time, and to initiate the one or more microtomes to begin sectioning of the first tissue block while the second tissue block is being hydrated.

Abstract: A sample injector is disclosed comprising a switching valve comprising an input port, an aspiration/dispensing port, a loop input port and a loop output port, a pump port and a column port, an aspiration pump connected to the aspiration/dispensing port via a buffer loop for aspirating a sample into the buffer loop when the aspiration/dispensing port is connected to the loop input port, a sample loop connected to the switching valve between the loop input port and the loop output port, for receiving the sample aspirated into the buffer loop when the loop input port is connected to the aspiration/dispensing port, a column connected to the column port, and a pump connected to the pump port, for injecting the sample received into the sample loop into the column when the pump port is connected to the loop output port and the column port is connected to the loop input port.

Abstract: A method and a sensor for detecting or measuring at least one specific component among a plurality of components present in a gaseous or liquid mixture by a sensor having at least one capturing cell with a high-electron mobility transistor including a source and a drain with a grid inserted between the source and the drain, a voltage being applied between the source and the drain, and a current intensity in the capturing cell being recorded. The voltage between the source and the drain is controlled, which varies the intensity of the current, the voltage being controlled according to a voltage model predetermined by experience in order to provide a profile with an intensity which is characteristic of said at least one specific component.