Abstract: An apparatus for detecting an organic compound and an apparatus for manufacturing a display device, the apparatus for detecting an organic compound including an infrared light emitting unit that irradiates infrared rays toward a gas-phase organic compound used as a process gas in an atmospheric pressure equipment; a first window that separates the organic compound from the infrared light emitting unit; an infrared detection unit that measures an infrared absorbance of the organic compound; and a second window that separates the organic compound from the infrared detection unit, wherein infrared absorption regions of the first window and the second window are different from an infrared absorption region of the organic compound.

Abstract: An optical gas detector (20) in metal or other suitable material, comprising a cup-shaped body (1), with upper mouth (9) closed by a lid (2) the bottom of which (8) is flat and provided with a plurality of through holes (15) variously arranged, which place said detector (20) in communication with the outside environment, and inside which an IR source (10) and an IR analyser (11) are placed, borne by an overlying circuit board (12). The inner lateral surface of the body (1) forming a first reflector wall (6) having a regular or irregular annular extension and defining, in conjunction with a second convex or concave reflector wall (7, 7?) of a shaped appendage (5) and with one or more reflectors (3, 3?, 21, 22, 23,24,25) pre-inserted and positioned in the body (1), a multiplicity of geometrically alternative optical paths (4, 4?, 4?, 4??) of the electromagnetic radiation emitted by the IR source (10) and detected by the IR analyser (11).

Abstract: A gas analyser for the absorption-spectroscopic in-situ determination of at least one chemical and/or physical parameter of a gaseous measurement medium, wherein the gas analyser includes a first housing; at least one laser as a radiation source, which laser is arranged in the first housing; at least one first process window for coupling the radiation emitted by the laser into a measurement medium; and at least one detector by which, following interaction with the measurement medium, the radiation is detected. The first process window can be configured as an afocal meniscus lens having a convex surface and a concave surface.

Abstract: Detection of fluid conditions in an administration set. A light source is positioned to transmit an infrared light through administration set tubing and any fluid therein. A light sensor senses the infrared light transmitted through the tubing and generates an output signal. A frequency of the output signal is a function of an intensity of the light transmitted through the tubing. A processor receives and determines the frequency of the output signal, and compares the determined frequency to threshold frequency values to determine whether fluid is in the tubing. The processor also monitors the generated output signal to determine if the frequency of the output signal changes over time, and determines whether fluid is flowing in the tubing as a function of the determined change in frequency.

Abstract: Described herein is a gas meter system (5) for detecting toxic gas combinations including a housing (10) having an opening (20), a measuring cell (15) enclosed by the housing and comprising a plurality of gas sensors (17) in fluid communication with the environment via the opening in the housing, and an evaluating circuit (32). The gas sensors detects a concentration of a first gas and a concentration of a second gas so the evaluating circuit can identify a hazard due to an additive or synergistic toxic effect upon combined exposure to the first gas and the second gas. Related apparatus, systems, methods and/or articles are described.

Abstract: A measurement device that includes a device main unit including at least one cavity for accommodating an analyte containing a specimen and an aperture array structure including a plurality of apertures extending therethrough in a direction perpendicular to a principal surface thereof. The aperture array structure is fixed such that part or all of the aperture array structure is positioned in the cavity.

Abstract: Systems and methods for analyzing samples in containers are provided, where an emitter emits radiation at a first location on the container, with a portion of the radiation passing through the container and into the sample, some of the radiation is reflected within the container, a detector receives a transmission Raman signal including Raman radiation from multiple portions of the sample, and a comparator compares the transmission Raman signal with the radiation emitted by the emitter.

Abstract: A portable breath analyzing device to measure the rate of partial gas that is exhaled in the breath fluid. The device includes a rechargeable power supply unit, a device to emit pulsated infrared radiation, an infrared receiver, and a measuring vessel. The emission device includes a heating element; the measuring vessel includes a metallic tube whose interior surface is polished and coated with a deposit that reflects at least the infrared radiation of wavelengths that are between (9 ?m, 10 ?m) and at each end of the tube, a nozzle comprising a cone-shaped section meant to be placed in the tube axis. The infrared emission device is placed on the longitudinal axis of the tube, at the level of one of the nozzles, and the receiver is placed on the longitudinal axis, at the level of the other nozzle.

Abstract: An apparatus and system for monitoring and communicating emissions data for a diesel engine. An exhaust gas analyzer uses infrared light to measure the quantity of trace gases and particulates in an exhaust gas outlet from a diesel engine. The gas analyzer preferably includes a logic processor to interpret the measured data and a memory device to store the measured data. A radio transmitter, cellular data transmitter, or Smartphone transmits the measurement data. In a diagnostic and monitoring system for a diesel engine, the exhaust gas analyzer is in contact with the exhaust gases from the diesel engine, preferably in the tailpipe. A data receiver receives the measurement data transmitted by the radio transmitter, cellular data transmitter, or Smartphone.

Abstract: A measuring cell adapted for a spectral analysis of a gas sample, where this measuring cell is designed and adapted to co-ordinate, from an IR generating element, emitted converging and/or diverging light beams in a direction toward an IR receiving element, by a plurality of reflections of emitted light beams from a number of reflection surfaces assigned to the inner cavity of the measuring cell, thereby creating a predetermined measuring distance in the inner cavity of the measuring cell, from the IR generating element to the IR receiving element. The cavity of the measuring cell is adapted to contain the gas sample intended for a spectroanalytical absorption measurement.

Abstract: An NDIR gas detector includes a photodetector for detecting a portion of stray visible light emitted from an incandescent lamp so as to generate an induced electrical signal, which is compared with a preset reference signal associated with a predetermined constant level of the stray visible light corresponding to a constant temperature of the lamp so as to obtain a level difference between the induced electrical signal and the reference signal. Electrical power supplied to the lamp is repeatedly regulated based on the level difference until the induced electrical signal and the reference signal have the same level, thereby stabilizing IR emission of the lamp in response to the lamp being kept at the constant temperature.

Abstract: Disclosed are a system and a method for monitoring unsaturated zone gas and near-surface atmosphere in real time by using an isotope analyzer. The system includes a near-surface atmosphere analyzer including a fixing member, a plurality of near-surface gas inlets, a plurality of gas transfer members communicating with the near-surface gas inlets, an analyzing member including an isotope analyzer, which analyzes an isotope of gas transferred through the gas transfer members, a channel connected to the gas transfer members and the analyzing member to select one gas transfer member and to supply gas transferred through the selected gas transfer member to the analyzing member, and a connection member connecting the channel to the analyzing member, a communication device transmitting components of the isotope output from the isotope analyzer, and a monitoring server outputting the components of the isotope transmitted from the communication device.

Abstract: A gas sensor device for determining a molar concentration of a gas to be detected, that absorbs light of a measurement wavelength that is characteristic of the gas in the infrared light region, includes a light emission device emitting measurement light of measurement wavelength into a solid angle region of a light absorption path extending through the gas, and a light detector measuring an intensity of at least one component of the measurement light that has propagated through the light absorption path, the light absorption path extending from the light emission device to an object outside the gas sensor device that at least partially reflects the measurement light to the light detector, and being essentially disposed outside of the gas sensor device, and means for determining the length of the light absorption path. A method for determining a concentration of a gas to be detected is also described.

Abstract: The present invention is directed to systems and methods which utilize a cavity ring-down spectroscopy (CRDS) technique implemented for the measurements of vapor transmission rate. In one embodiment, the vapor content to be measured is contained within an optical cavity. Light is then injected into the cavity up to a threshold level and the decay time of the injected light is measured. When the wavelength of the injected light is resonant with an absorption feature of the vapor the decay time increases linearly as a function of vapor content. In this manner, vapor content causes a longer decay time and thus the amount of vapor passing through the film (film permeation rate) can be determined in real-time.

Abstract: An Absorption Biased (AB) methodology for NDIR gas sensors is used with a single infrared source and a detector to detect a single gas of interest by using a motion device to change the path length between that of the signal and reference channels. As in the case of the AB designed NDIR gas sensor, the ratio of the output of the Signal channel, measured during location arrangement X, over that of the Reference channel, measured during location arrangement Y, will be used to process the gas measurement. Multiple gases of interest can be detected by using one detector to detect multiple gases and/or by locating a second detector to detect multiple gases more distant from the source than the first detector, thereby creating longer path lengths for the second detector.

Abstract: Methods and systems for real time, in situ monitoring of fluids, and particularly the determination of both the energy content and contaminants in a gas or oil transmission facility, are provided. The system may include two separate scanning sources to scan two different, but overlapping, NIR ranges, or may involve two separate scans from a single scanning spectroscopy source. The first scan ranges from approximately 1550 nm up through 1800 nm and a second scan concurrently scans at a high resolution across a band from approximately 1560-1610 nm, the wavelength of interest for hydrogen sulfide (though similar scans are contemplated in alternative wavelength ranges for alternative contaminants). The second scan may provide very narrow (0.005 nm) step resolution over just the wavelength of interest for the contaminant and may scan at a substantially higher power level.

Abstract: A gas detection system comprising a case having a hollow chamber, a gas input port, a gas output port, a radiation emitting device, and a photo detector. The gas input port may be disposed on the case for a test gas flowing into the chamber. The gas output port may be disposed on the case for the test gas flowing out of the chamber. The radiation emitting device may be disposed on the case and operated in a surface plasmonic mode or a waveguide mode for emitting a narrow bandwidth thermal radiation light source with multi-peak wavelengths into the chamber, wherein the multi-peak wavelengths may comprise a first absorption wavelength and a second absorption wavelength of the test gas. The photo detector may be disposed on the case for detecting light intensity of the light source passing through the chamber to determine the concentration of the test gas.

Abstract: A device for optical detection of a target gas in gas mixtures includes an operation and evaluation unit, a measurement cuvette with optically reflective surfaces on its interior walls and a gas inlet to the environment, a radiation source, a measuring detector and a reference detector unit provided on the measurement cuvette. The measuring detector and the reference detector unit detect the light of the radiation source and produce electrical signals corresponding to the intensity of the detected light. An optical bandpass filter element, constructed to transmit light of a measurement wavelength, is arranged upstream of the measuring detector. An optical double-bandpass filter unit, that transmits light of a first reference wavelength and light of a second reference wavelength, is arranged upstream of the reference detector unit. The operation and evaluation unit operates the radiation source and acquires the electrical signals of the measurement detector and the reference detector unit.

Abstract: A measurement system for measuring the CO2 concentration in an environmental chamber or in an incubator has a radiation source with an optical axis and at least two radiation detectors. The radiation source and the radiation detectors are arranged such with respect to one another that the radiation emitted by the radiation source impinges, after passing through a measurement volume, on the radiation detectors. In each case one channel having a first end and a second end is provided for each radiation detector. The radiation detector is arranged at the first end and the first end of the channel is remote from the radiation source. The channels have a diameter which is smaller than the diameter of the measurement volume, transverse to the optical axis.

Abstract: Disclosed herein are methods and mid-IR detection apparatus to measure analytes in gas or liquid phase. Solid state cooling of a crystalline lattice is effectively achieved with the controlled flow of charge carriers that absorb thermal energy from the semiconductor material which senses mid-IR photons. Reduction in temperature improves signal-to-noise ratios thus improving molecular sensitivity. In one embodiment the apparatus is used to detect a biomarker.

Abstract: A chemical sensor is provided. The sensor includes at least one lightguiding element having an optical core. The lightguiding element comprises a layer of graphene situated in sufficient proximity to the core to exhibit evanescent wave absorption of optical energy in at least one optical mode guided in the core.

Abstract: An analysis apparatus for analyzing a gas by a terahertz wave or an infrared ray comprises a generator for generating the terahertz wave or the infrared ray; a trapping unit having a trapping film for trapping a gas and being placed to be capable of causing interaction between the gas trapped by the trapping film and the terahertz wave or infrared ray generated by the generator; and a detector for detecting the interaction of the gas with the terahertz wave or infrared ray; wherein the trapping unit comprises a structure for contact with a site evolving the gas; and the structure holds the trapping film separately from the site.

Abstract: System flow path designs that minimize the impact of gas diffusion sources and sinks. By reducing the magnitude of parasitic sources and sinks, lower rates of photosynthesis and transpiration can be more accurately measured, e.g., without the need for extensive empirical compensation. The gas exchange analysis system includes a sample chamber having an inlet and an outlet, wherein the internal surface(s) of the chamber defining the measurement volume are metal plated. The system also typically includes a source of gas coupled with the inlet of the sample chamber, and a gas analyzer coupled with the outlet of the sample chamber and configured to measure a concentration of one or more gases exiting the chamber, whereby the metal plated internal surface(s) of the chamber reduces sorption of the one or more gases within the chamber.

Abstract: An example method of detecting components of a gas includes detecting substantially all components of a gas using distinct infrared wavelengths within a portion of the infrared spectrum, the portion being less than the entire infrared spectrum.

Abstract: A gas detection system includes a light detector, a pump laser with spectral emission between UV and IR wavelengths and structured to generate a laser beam, a hollow waveguide structured to receive a sample gas, the hollow waveguide having a bandwidth sufficient to transmit the laser beam and Stokes Raman photons scattered by the sample gas, and an optical system. The optical system is structured to: (i) direct the laser beam into the hollow waveguide such that it propagates in the hollow waveguide in one or more low-order low-loss waveguide modes, and (ii) direct Raman signals generated within the hollow waveguide in response to the laser beam interacting with the sample gas toward the light detector, the Raman signal including the Stokes Raman photons.

Abstract: Portable equipment for displaying a vehicle page, indicative of information relating to a vehicle corresponding to the portable equipment, on a screen of a display unit, includes: a reading request receiving device that receives a reading request manipulation for requesting to display the vehicle page; a position information acquisition device that acquires position information of the portable equipment and the vehicle; an item selection device that specifies an area, in which the position of the portable equipment and the vehicle is disposed, and selects an item of a top page of the display unit according to the area among multiple items; and a page display controller that controls the display unit to display the item of the top page on the screen.

Abstract: A method of protecting a sensor for use in an environment, includes providing a protective enclosure formed in a plurality of sections, at least a first section of the plurality of sections being movable relative to a second section of the plurality of sections so that the protective enclosure can be placed around at least a portion of the sensor; placing the first section adjacent the sensor while the first section and the second section are in an open state; and moving the second section to place the first section and the second section in a closed state in which the first section and the second section encompass the at least a portion of the sensor.

Abstract: A diagnostic system having a laser, an EGR probe, a detector and a processor. The laser may be a swept-? laser having a sweep range including a significant CO2 feature and substantially zero absorption regions. The sweep range may extend from about 2.708 ?m to about 2.7085 ?m. The processor may determine CO2 concentration as a function of the detector output signal. The processor may normalize the output signal as a function of the zero absorption regions. The system may include a plurality of EGR probes receiving light from a single laser. The system may include a separate detector for each probe. Alternatively, the system may combine the light returning from the different probes into a composite beam that is measured by a single detector. A unique modulation characteristic may be introduced into each light beam before combination so that the processor can discriminate between them in the composite beam.

Abstract: A gas analyzer for measuring at least two components of a gas is disclosed herein. The gas analyzer comprising an emitter configured to emit infrared radiation through the gas, a filter assembly configured to permit a transmission of predetermined wavelengths emitted by the emitter, and a detector configured to receive wavelengths emitted by the emitter and penetrated through the filter assembly. The filter assembly comprises at least two tunable narrowband interference filters in series, each of the filters comprising two dielectric mirrors and an air space between the two dielectric mirrors to tune one of the filters to different transmission band than another of the filters.

Abstract: A dialysis system that includes a dialysis machine, a tube connected to the dialysis machine, and a sensor system. The sensor system includes a head having a slot configured to receive the tube and a plurality of sensors secured to the head adjacent the slot. At least one of the plurality of sensors includes a light emitting element configured to transmit light through the tube when the tube is disposed in the slot and a light receiving element configured to receive the light emitted by the light emitting element after the light passes trough the tube.

Abstract: The calibration/verification system and method for gas imaging infrared cameras standardizes the procedures to objectively and consistently check performance of gas imaging infrared cameras. This system includes a background board maintaining a uniform temperature, a target cell filled with a target compound and disposed in front of the background board, a reference cell filled with a reference compound and disposed in front of the background board, and an analyzer coupled to the camera that captures images of the gas cell and the reference cell. The analyzer compares the intensity difference and the temperature difference of rays passing through the target cell and reference cell to a reference relationship data of a quality control chart to determine whether the camera is in a working condition. The method is further extended to provide a quantitative measurement of a hydrocarbon plume from a gas imaging infrared camera.

Abstract: The present application provides a non-dispersive infrared gas sensor. The non-dispersive infrared gas sensor may include an infrared source, an infrared detector, and a waveguide extending about the infrared source and the infrared detector. The waveguide may include a reflective diffuser thereon.

Abstract: System flow path designs that minimize the impact of gas diffusion sources and sinks. By reducing the magnitude of parasitic sources and sinks, lower rates of photosynthesis and transpiration can be more accurately measured, e.g., without the need for extensive empirical compensation. According to one aspect, a sensor head for use in a gas exchange analysis system includes a sample chamber defining a measurement volume for analysis of a sample, the sample chamber having an inlet and an outlet, and a flow splitting mechanism located proximal to the sample chamber, the mechanism configured to split a gas flow received at an input port from a remote source to a first output port and to a second output port, wherein the first output port is coupled with the inlet of the sample chamber.

Abstract: The present invention provides methods and apparatuses for in situ chemical analysis of liquid sample for the collection, identification, and measurement of chemical moieties, such as, biotoxins, organic compounds, or chemical contaminants, in aquatic environments. The apparatuses of the present invention relate to an automated in situ sampler for chemical stressors that adversely impact biological systems in aquatic environments. The apparatuses of the present invention are designed as a means to automatically collect liquid (e.g., water) samples and analyze them for the presence of chemical moieties. The apparatuses of the present invention are designed to automatically collect multiple liquid samples, extract and separate chemical moieties contained within the samples, and analyze the chemical moieties to determine the composition and concentration of the chemical moieties over time and space.

Abstract: The invention relates to a device for measuring the concentration of a molecule, such as CO, NO or NO2, in a gaseous atmosphere at a temperature above 1200° C. in a chamber, said molecule having an absorption line at a wavelength between 4 and 8 ?m, said device comprising an emitter that emits laser radiation with a wavelength corresponding to that of the absorption line, said emitter emitting the laser radiation through a first window and then through said atmosphere, said window being made of a solid material having, for a material thickness of 1 mm, a transmittance greater than 50% at the wavelength of the laser radiation, the laser radiation being analyzed after having passed through said atmosphere by an analyzer that determines the absorption of the laser radiation by the molecule in the gaseous atmosphere, the window being placed on or in a wall of the chamber, where appropriate via an insert, in order to prevent the hot atmosphere of the chamber escaping therefrom.

Abstract: Embodiments described herein generally relate to devices, systems and methods for measuring the dose remaining in a drug delivery device that is used for delivering a dose to a patient. In some embodiments, a dose measurement system for measuring the liquid volume in a container includes a plurality of light sources which are disposed and configured to emit electromagnetic radiation toward the container. A plurality of sensors are located in the apparatus that are optically coupleable to the plurality of light sources and are disposed and configured to detect the electromagnetic radiation emitted by at least a portion of the light sources. The apparatus also includes a processing unit configured to receive data representing the portion of the detected electromagnetic radiation from each of the plurality of sensors. The processing unit is further operable to convert the received data into a signature representative of the electromagnetic radiation detected by the plurality of sensors.

Abstract: A non-dispersive single beam detection assembly in an infrared gas analyzer. The detection assembly comprises radiation source(s) providing infrared radiation, a measuring chamber, and a physical beam splitter for dividing said radiation beam into a reflected beam portion and a transmitted beam portion, or for combining a reflected beam portion and a transmitted beam portion into said radiation beam. A measuring detector receives one beam portions, and a reference detector receives another beam portion. Alternatively a measuring/reference detector receives both beam portions. Said transmitted beam portion has a first spectral intensity peak at shorter wavelengths with a first peak wavelength, and said reflected beam portion has a second spectral intensity peak at longer wavelengths with a second peak wavelength.

Abstract: A method for detecting leaks during high temperature selenization of Cu—In—Ga metal precursor films comprises positioning a light source on one side of a transparent reaction chamber or aligned with a window in an opaque reaction chamber. The method further comprises positioning a detector opposite the light source and detecting an intensity of light from the light source. Leaks in the seals of the reaction chamber will result in the formation of an opaque film on the walls of the reaction chamber. A decrease in the intensity of light incident on the detector will indicate the presence of the leak. A second method comprises measuring the reflection of the light source off of the reaction chamber wall or a window in the reaction chamber. An change in the reflected light will indicate a leak in the seals of the reaction chamber.

Abstract: A system for locking a laser with a resonant optical cavity includes a laser that emits a laser beam, a resonant optical cavity having at least two cavity mirrors, one of which is a cavity coupling mirror, mode matching optics configured to couple the laser beam to the cavity via the cavity coupling mirror, means for applying a periodic dither or modulation waveform signal to the optical frequency of the incident laser beam or to the laser itself to thereby induce modulation of the intracavity optical power, and means for enabling a portion of the light emerging from the cavity coupling mirror to enter a cavity of the laser while maintaining an optical phase that results in periodic optical feedback locking whereby a mean optical frequency of the laser matches a resonance peak of the cavity.

Abstract: A method of determining components of a flowing heterogeneous sample comprising obtaining a sample of material; measuring mid-infrared attenuation values of the sample and calculating in a data processing unit an indication of the component of interest in the sample from the measured mid-infrared attenuation values characterised in that the method further comprises flowing the sample; concurrently interacting mid-infrared radiation with the flowing sample in a measurement region and subsequently measuring the mid-infrared attenuation values for one or more wavebands of the interacted radiation.

Abstract: A gas analyzer contains an optical block inside which a channel is formed from its inlet to outlet for infra-red radiation passage, a control unit connected to the optical block inlet and outlet, and an infra-red radiation source located at the optical block 1 inlet, as well as an infra-red radiation detector installed at the said block outlet; used as an infra-red radiation source is a quick- acting differential photovoltaic detector with a mirror filter, whose reflection and spectral characteristics of transmission are consistent with the measured gas absorption spectrum and spectrum of the infra-red radiation source correspondingly. The gas analyzer achieves high sensitivity and minimum energy consumption. The optical block contains the inner channel for infrared radiation passage, the infra-red radiation source located at the channel inlet and the infra-red radiation detector located at the channel outlet.

Abstract: A volatile organic compound sensor includes a source of infrared (IR) light, a detector for detecting the IR light, and a space defined between the IR light source and the IR light detector. The space includes volatile organic compounds (VOCs). The IR light detector measures an amount of IR light transmitted through the space, the measured IR light transmitted being attenuated by VOC light absorption when in the space. An amount of the IR light attenuation is related to a concentration of the VOCs present in the space.

Abstract: A non-dispersive infrared gas sensor provides the same light path for light used in a reference mode and a test mode for testing for the presence or concentration of one or more gases. A vacuum is formed in the light pipe in the reference mode. Gas flows into the light pipe before the test mode. The same emitter and detector maybe used for both the test and reference modes. The emitter transmits an electromagnetic wave through the light pipe in both the reference and test modes. The detected signals in both modes are compared to determine the concentration or presence of gas in the light pipe.

Abstract: A system for monitoring a concentration of carbon dioxide (CO2) in an unsaturated zone of a site in which CO2 should be stored under the ground is provided which includes: a plurality of apparatuses for detecting the concentration of CO2 in the unsaturated zone, each including a cylindrical chamber buried in an unsaturated zone under the earth surface, gas introduction holes formed in the side surface of the chamber, and a CO2 concentration sensor formed through the top of the chamber so as to measure the concentration of CO2 contained in the gas in the chamber; a plurality of communication devices transmitting the CO2 concentration output from the CO2 concentration sensor; and a monitoring server storing a reference CO2 concentration every time zone and comparing the reference CO2 concentration with the measured CO2 concentrations transmitted from the communication devices to output a normal signal or an abnormal signal.

Abstract: A method and apparatus for determining the amount of water in an organic solvent solution, such as a DMSO solution. The apparatus comprises an infrared LED for emitting near infrared light; a laser diode collimator for forming a collimated light beam from the light emitted by the LED; a sample container holder for accepting a sample container containing a sample solution; a photodiode for generating an output signal that is related to the intensity of the collimated light beam after the collimated light beam has passed through the sample solution; and a control means for controlling the stability of the near infrared light emitted by the infrared LED by controlling an amount of current flowing through the infrared LED.

Abstract: This device includes a stage for forming a gaseous flow from the sample, and a column for separation by selective retention of each gaseous constituent. It includes an oven for combustion of the gaseous flow in order to form a gaseous residue from each constituent, and a quantification unit for quantifying the content of each constituent to be analyzed in the gaseous flow. The quantification unit includes an optical measurement cell connected to an oven, and a mirror for introducing a laser incident optical signal into the cell. The quantification unit also measures a transmitted optical signal resulting from an interaction between the optical signal and each gaseous residue in the cell, and calculates the content on the basis of the transmitted optical signal.

Abstract: A method and device for processing mammalian adipose tissue such that the vascular rich fraction is separated from the vascular poor fraction, Mammalian adipose tissue in the form of morselated surgical biopsies and/or lipoaspirate from liposuction is placed within a novel syringe attached to a detection device measuring either color, light saturation, infra-red light, heme, iron or oxygen saturation. This process involves no label and minimal manipulation and handling of the tissue. This process and device may also be used intra-operatively under sterile conditions for immediate use within the same individual receiving liposuction or surgery.

Abstract: A method and apparatus for the photo-acoustic identification and quantification of one or more analyte species present in a gaseous or liquid medium in low concentration utilizing a laser and a resonant optical cavity containing the medium and having within the cavity at least two partially transparent mirrors, one of which is a cavity coupling mirror and one of which is moveably mounted on an assembly responsive to an input signal.

Abstract: An NDIR gas sensor is housed within a mechanical housing made up of a header housing, a can mounted to the header housing, and a sample chamber mounted above the can. The can has a top surface with a pair of windows formed in it to allow radiation to enter and return from the sample chamber. An electronics module is mounted on a printed circuit board hermetically sealed within the can. A signal channel path length detected by the signal detector is greater than a reference channel path length detected by the reference detector and an absorption bias between the signal and reference outputs can be used to determine a gas concentration in the sample chamber. Both the signal detector and the reference detector have an identical narrow band pass filter with the same Center Wavelength (“CWL”), Full Width Half Maximum (FWHM) and transmittance efficiency at the CWL.

Abstract: This invention provides methods and devices to measure particle suspension concentrations through the side wall of a container. Particle back-scatter readings are taken at light wavelengths that do not travel far through the medium. Detected scatter is related to actual particle concentration or standard O.D. values. The methods and devices allow particle concentration readings through containers not normally intended for use in such assays.