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901 results about "Infrared spectroscopy" patented technology
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Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter. It covers a range of techniques, mostly based on absorption spectroscopy. As with all spectroscopic techniques, it can be used to identify and study chemical substances. Samples may be solid, liquid, or gas. The method or technique of infrared spectroscopy is conducted with an instrument called an infrared spectrometer (or spectrophotometer) to produce an infrared spectrum. An IR spectrum can be visualized in a graph of infrared light absorbance (or transmittance) on the vertical axis vs. frequency or wavelength on the horizontal axis. Typical units of frequency used in IR spectra are reciprocal centimeters (sometimes called wave numbers), with the symbol cm⁻¹. Units of IR wavelength are commonly given in micrometers (formerly called "microns"), symbol μm, which are related to wave numbers in a reciprocal way. A common laboratory instrument that uses this technique is a Fourier transform infrared (FTIR) spectrometer. Two-dimensional IR is also possible as discussed below.
Method and apparatus for identifying and treating myocardial infarction
InactiveUS20080125634A1Safe and effectiveAccurate locationGuide needlesSurgical needlesVisual perceptionVisual feedback
A method and apparatus for analyzing and treating internal tissues and, in particular, tissues affected by myocardial infarct. The apparatus includes a catheterized device integrating an optical probe and treatment delivery system. The probe component includes fiber optic lines that can be used in conjunction with infrared spectroscopy to analyze various characteristics of tissues, including chemical, blood, and oxygen content, in order to locate those tissues associated with myocardial infarct, to determine the best location for applying treatment, and to monitor treatment and its effects. Physically integrated with the probe component is a treatment component for delivering treatments including stem cell and gene therapy, known for having beneficial effects on tissues associated with myocardial infarct. A control system coordinates operation of the catheter, including performing chemometric analysis with the use of model data, and for providing control and visual feedback to an operator.
Owner:CORNOVA
Near infrared spectroscopy device with reusable portion
InactiveUS7706853B2Small sizeFirmly attachedMaterial analysis by optical meansDiagnostic recording/measuringSurgical operationHigh energy
A NIRS sensor device for brain monitoring is small in size, provides reliable attachment to a patient, blocks ambient light, is easy to use, is hygienic, and supports data integration with surgical and monitoring systems. The sensor device is coupled to a remote near infrared light source via a hybrid cable. Since the light source is remotely located, a source adapted for providing high energy, short pulses can easily be used so that there is less chance of interference by superficial non-brain tissues and less interference from ambient light. In addition, the remote location avoids changes in output of local light sources experienced in the prior art during hypothermia procedures (e.g., bandwidth shifts in LEDs as a result of lowered temperature). The higher energy may be achieved by the use of laser diodes as opposed to locally-mounted LEDs typically used in the prior art. The sensor device is a two-piece design comprising a reusable portion containing the photodetector(s) and a disposable portion that receives the light from the reusable portion and bends it to direct the light into the brain.
Owner:TERUMO CARDIOVASCULAR SYST CORP
System for non-invasive measurement of glucose in humans
InactiveUS6865408B1Efficient collectionMaximize glucose net analyte signal-to-noise ratioRadiation pyrometryDiagnostics using spectroscopyData acquisitionNon invasive
An apparatus and method for non-invasive measurement of glucose in human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes six subsystems optimized to contend with the complexities of the tissue spectrum, high signal-to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance problems, and calibration transfer problems. The six subsystems include an illumination subsystem, a tissue sampling subsystem, a calibration maintenance subsystem, an FTIR spectrometer subsystem, a data acquisition subsystem, and a computing subsystem.
Owner:INLIGHT SOLUTIONS
Noninvasive determination of alcohol in tissue
InactiveUS20050261560A1Efficient collectionIncrease luminous fluxDiagnostics using lightDiagnostics using spectroscopyAlcoholMedicine
An apparatus and method for non-invasive determination of attributes of human tissue by quantitative infrared spectroscopy. The system includes subsystems optimized to contend with the complexities of the tissue spectrum, high signal-to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance problems, and calibration transfer problems. The subsystems include an illumination subsystem, a tissue sampling subsystem, a spectrometer subsystem, a data acquisition subsystem, and a processing subsystem. The invention is applicable, as examples, to determining the concentration or change of concentration of alcohol in human tissue.
Owner:ROCKLEY PHOTONICS LTD
System for Noninvasive Determination of Analytes in Tissue
InactiveUS20100010325A1Increase heightInherent spectral complexityElectric signal transmission systemsImage analysisSignal-to-noise ratio (imaging)Analyte
An apparatus and method for noninvasive determination of analyte properties of human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes subsystems optimized to contend with the complexities of the tissue spectrum, high signal-to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance problems, and calibration transfer problems. The subsystems can include an illumination / modulation subsystem, a tissue sampling subsystem, a data acquisition subsystem, a computing subsystem, and a calibration subsystem. The invention can provide analyte property determination and identity determination or verification from the same spectroscopic information, making unauthorized use or misleading results less likely than in systems that use separate analyte and identity determinations. The invention can be used to control and monitor individuals accessing controlled environments.
Owner:ROCKLEY PHOTONICS LTD
Compact apparatus for noninvasive measurement of glucose through near-infrared spectroscopy
ActiveUS20050020892A1Layer is minimizedMaximize collection of lightDiagnostics using spectroscopyScattering properties measurementsFiberConcentrations glucose
A near IR spectrometer-based analyzer attaches continuously or semi-continuously to a human subject and collects spectral measurements for determining a biological parameter in the sampled tissue, such as glucose concentration. The analyzer includes an optical system optimized to target the cutaneous layer of the sampled tissue so that interference from the adipose layer is minimized. The optical system includes at least one optical probe. Spacing between optical paths and detection fibers of each probe and between probes is optimized to minimize sampling of the adipose subcutaneous layer and to maximize collection of light backscattered from the cutaneous layer. Penetration depth is optimized by limiting range of distances between paths and detection fibers. Minimizing sampling of the adipose layer greatly reduces interference contributed by the fat band in the sample spectrum, increasing signal-to-noise ratio. Providing multiple probes also minimizes interference in the sample spectrum due to placement errors.
Owner:GLT ACQUISITION
Apparatus for evaluating biological function, a method for evaluating biological function, a living body probe, a living body probe mounting device, a living body probe support device and a living body probe mounting accessory
ActiveUS20080262327A1Good effectReduce variationOptical sensorsMeasuring/recording heart/pulse rateBiological bodyMedicine
The apparatus for evaluating biological function of the present invention has living body probes 1, a behavioral information measuring part 2 and an apparatus body 3, and it utilizes near-infrared spectroscopy to evaluate biological function; apparatus body 3 has a controller 8 for calculating (based on light information from living body probes 1) a variety of parameters derived from two-dimensional diagrams showing relationships between changes in oxyhemoglobin and changes in deoxyhemoglobin and two-dimensional diagrams showing relationships between absolute amounts of oxyhemoglobin and absolute amounts of deoxyhemoglobin, a behavioral information input part for entering behavioral information measured by means of behavioral information measuring part 12, and a display part 10 for performing various types of image displays based on various parameters calculated by means of controller 8 and / or behavioral information entered in the behavioral information input part.
Owner:KATO
A method for rapid detection of the content of index components in traditional Chinese medicinal materials by using near-infrared spectroscopy
InactiveCN102288572AEnables rapid detection of issues with comprehensive qualityHigh speedColor/spectral properties measurementsReflectance spectroscopyAdditive ingredient
The invention relates to a method for rapidly detecting the content of index components of Chinese medicinal materials by using near-infrared spectroscopy technology, which can realize the rapid detection of the comprehensive quality of Chinese medicinal materials. Collect the sample, collect the near-infrared diffuse reflectance spectrum of the sample, and preprocess the obtained spectrum, then use the detection method corresponding to the sample in the conventional method to measure the content of its index components, and combine the spectrum with the content of the index components, The quantitative analysis model is established by adopting the chemometrics method suitable for the analysis of the components of traditional Chinese medicine, the sample to be tested is crushed, and its near-infrared spectrum is scanned, and the spectrum is input into the quantitative analysis model to measure the content of the index components in the Chinese medicinal material. The whole process takes a short time, is fast and accurate, can be measured online, improves production efficiency, greatly saves manpower and material resources, and can generate huge economic and social benefits.
Owner:HENAN UNIV OF CHINESE MEDICINE
Device for reference measurement and photometric correction in non-invasive glucose measurement using near infrared spectroscopy
InactiveUS6917422B2Reduce the amount of lightPhotometry using reference valueRadiation pyrometryLuminosityGlucose Measurement
The present invention provides a photometric reference member comprising PTFE and glass. The member exhibits an absorbance change of less than 0.0001 absorbance units per degree C. over a range of temperatures, preferably from about 20° C. to about 40° C., and over wavelengths from about 600 nm to about 1650 nm, preferably about 600 nm to about 1050 nm. The invention also pertains to methods of using the photometric reference member to correct for temperature variations or drift in absorbance measurements.
Owner:TYCO HEALTHCARE GRP LP
Thermoelectrically cooled water trap
InactiveUS7000490B1Low detection sensitivityEasy to removeWithdrawing sample devicesPreparing sample for investigationThermoelectric coolingWater vapor
A water trap system based on a thermoelectric cooling device is employed to remove a major fraction of the water from air samples, prior to analysis of these samples for chemical composition, by a variety of analytical techniques where water vapor interferes with the measurement process. These analytical techniques include infrared spectroscopy, mass spectrometry, ion mobility spectrometry and gas chromatography. The thermoelectric system for trapping water present in air samples can substantially improve detection sensitivity in these analytical techniques when it is necessary to measure trace analytes with concentrations in the ppm (parts per million) or ppb (parts per billion) partial pressure range. The thermoelectric trap design is compact and amenable to use in a portable gas monitoring instrumentation.
Owner:THE UNITED STATES AS REPRESENTED BY THE DEPARTMENT OF ENERGY
Method and system for measuring lactate levels in vivo
InactiveUS20060234386A1Addressing slow performanceContinuous monitoringRadiation pyrometryRaman scatteringInfraredNear infrared raman spectroscopy
There is described a system and method for the in vivo determination of lactate levels in blood using Near-Infrared Spectroscopy (NIRS) and / or Near-infrared Raman Spectroscopy (NIR-RAMAN). The method teaches measuring lactate in vivo comprising: optically coupling a body part with a light source and a light detector the body part having tissues comprising blood vessels; injecting near-infrared (NIR) light at one or a plurality of wavelengths in the body part; detecting, as a function of blood volume variations in the body part, light exiting the body part at at least the plurality of wavelengths to generate an optical signal; and processing the optical signal as a function of the blood volume variations to obtain a lactate level in blood.
Owner:MCGILL UNIV
Non-invasive screening of skin diseases by visible/near-infrared spectroscopy
A non-invasive tool for skin disease diagnosis would be a useful clinical adjunct. The purpose of this study was to determine whether visible / near-infrared spectroscopy can be used to non-invasively characterize skin diseases. In-vivo visible- and near-infrared spectra (400-2500 nm) of skin neoplasms (actinic keratoses, basal cell carcinomata, banal common acquired melanocytic nevi, dysplastic melanocytic nevi, actinic lentigines and seborrheic keratoses) were collected by placing a fiber optic probe on the skin. Paired t-tests, repeated measures analysis of variance and linear discriminant analysis were used to determine whether significant spectral differences existed and whether spectra could be classified according to lesion type. Paired t-tests showed significant differences (p<0.05) between normal skin and skin lesions in several areas of the visible / near-infrared spectrum. In addition, significant differences were found between the lesion groups by analysis of variance. Linear discriminant analysis classified spectra from benign lesions compared to pre-malignant or malignant lesions with high accuracy. Visible / near-infrared spectroscopy is a promising non-invasive technique for the screening of skin diseases.
Owner:NAT RES COUNCIL OF CANADA
System for noninvasive determination of alcohol in tissue
InactiveUS20110282167A1Efficient collectionUniform radiationDiagnostics using spectroscopyPerson identificationAlcoholMedicine
An apparatus and method for non-invasive determination of attributes of human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes subsystems optimized to contend with the complexities of the tissue spectrum, high signal- to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance problems, and calibration transfer problems. The subsystems include an illumination / modulation subsystem, a tissue sampling subsystem, a calibration maintenance subsystem, an FTIR spectrometer subsystem, a data acquisition subsystem, and a computing subsystem.
Owner:TRUTOUCH TECH
Method for measurement of composite heat damage with infrared spectroscopy
ActiveUS20050067569A1Efficiently and objectively determiningRadiation pyrometryScattering properties measurementsNon destructiveFiber
A non-destructive method determines an amount of heat exposure to a resin-fiber composite substrate. A value of infrared energy reflected by a composite substrate is determined. The value of infrared energy reflected, or conversely absorbed, is correlated to a degree or amount of heat exposure. According to an aspect of the present invention, one method utilizes an infrared spectrometer to determine infrared absorbance of a composite substrate. The infrared energy of the reflected beam is then compared with the pre-determined value of infrared energy reflected off a reference heat damaged composite substrate to determine the amount of heat exposure.
Owner:THE BOEING CO
Visible-near infrared spectroscopy in burn injury assessment
A non-invasive method of characterizing burn injuries using near infrared spectroscopy is described. In the method, a beam of light is emitted into the burnt tissue portion at two or more different tissue depths. The spectra are then compared using multivariate analysis to determine diagnostic regions of the spectra. This information is used to categorize the burn. In some cases, the diagnostic regions correspond to wavelengths related to the hemodynamics of the tissue portion. The spectra can also be repeated over time, thereby allowing trends and changes in the spectra to be measured. This data is in turn used to categorize the burn as either a superficial burn, partial thickness burn, deep partial burn or a full thickness burn. Once the burn has been categorized, the clinician can intervene as needed to treat the burn.
Owner:NAT RES COUNCIL OF CANADA
Process monitoring using infrared optical diagnostics
InactiveUS20050082482A1Speed up the processRadiation pyrometryElectric discharge tubesChemical speciesProcess region
A method and apparatus for real-time monitoring of the substrate and the gaseous process environment in a semi-conductor process step is described. The method uses infrared spectroscopy for in-situ analysis of gaseous molecular species in the process region and characterization of adsorbed chemical species on a substrate. The process monitoring can be applied to endpoint-and fault detection in etching and deposition processes, in addition to chamber cleaning and chamber condition steps.
Owner:TOKYO ELECTRON LTD
Method for monitoring feeds to catalytic cracking units by near-infrared spectroscopy
InactiveUS20070212790A1Monitor the FCC feed stocks quality more quickly and efficientlyMaterial analysis by optical meansBiological testingInfraredDistillation
A monitoring of catalytic cracking processing is provided which uses near infrared (NIR) analysis to characterize cracking feeds, intermediates and products for chemical and physical properties such as saturates, monoaromatics, diaromatics, triaromatics, tetraaromatics, polar aromatics, total aromatics, thiophenes, distillation points, basic nitrogen, total nitrogen, API gravity, total sulfur, MCRT and % coker gasoil and the resulting characterization thereof. The NIR results can be used in FCC simulation software to predict unit yields and qualities.
Owner:MARATHON PETROLEUM
Apparatus and Method for Controlling Operation of Vehicles or Machinery by Intoxicated or Impaired Individuals
InactiveUS20120078473A1Increase heightInherent spectral complexityOptical radiation measurementDigital data processing detailsAnalyteAlcohol
The present invention discloses apparatuses and methods for non-invasive determination of attributes of human tissue by quantitative infrared spectroscopy. The embodiments of the present invention include subsystems optimized to contend with the complexities of the tissue measurements. The subsystems can include an illumination / modulation subsystem, a tissue sampling subsystem, a calibration maintenance subsystem, a data acquisition subsystem, and a computing subsystem. Embodiments of the present invention provide analyte property determination and identity determination or verification from the same spectroscopic information, making unauthorized use or misleading results less likely that in systems that include separate analyte and identity determinations. The invention can be used to prevent operation of automobiles or other equipment unless the operator has an acceptable alcohol concentration, and to limit operation of automobiles or other equipment to authorized individuals who are not intoxicated or drug-impaired.
Owner:RIDDER TRENT +2
System for Noninvasive Determination of Analytes in Tissue
InactiveUS20120197096A1Increase heightInherent spectral complexityDiagnostics using spectroscopyPerson identificationAnalyteSignal-to-noise ratio (imaging)
An apparatus and method for noninvasive determination of analyte properties of human tissue by quantitative infrared spectroscopy to clinically relevant levels of precision and accuracy. The system includes subsystems optimized to contend with the complexities of the tissue spectrum, high signal-to-noise ratio and photometric accuracy requirements, tissue sampling errors, calibration maintenance problems, and calibration transfer problems. The subsystems can include an illumination / modulation subsystem, a tissue sampling subsystem, a data acquisition subsystem, a computing subsystem, and a calibration subsystem. The invention can provide analyte property determination and identity determination or verification from the same spectroscopic information, making unauthorized use or misleading results less likely than in systems that use separate analyte and identity determinations. The invention can be used to control and monitor individuals accessing controlled environments.
Owner:ROCKLEY PHOTONICS LTD
Fluorescent detection of proteins in polyacrylamide gels
ActiveUS7569130B2Laborious labelingLaborious staining stepElectrolysis componentsChemiluminescene/bioluminescenceSpectroscopyTryptophan
The mechanism of the UV light-induced reaction between the indole moiety of tryptophan and chloroform, and the structure of the modified tryptophan and polypeptides including such modified tryptophan residues. The excited indole moiety, which is formed upon UV light irradiation, emits a solvated electron which initiates a series of events that yield fluorescent derivatives that have CHO group covalently bound to the indole moiety. These derivatives are herein referred to as formyltryptophan, and are relatively stable. Similar reactions are observed when 5-hydroxytryptophan, 5-fluorotryptophan, or N-methylindolacetate are used in place of tryptophan, or when other haloalkanes, such as trichloracetic acid, trichlorethanol, trichlorethane, bromoform, and iodoactetate are used in place of chloroform. The derivatives can be used in a variety of applications in fluorescence spectroscopy, and for nuclear magnetic resonance, X-ray crystallography, infra-red spectroscopy, circular dicroism and mass spectroscopy. Additionally, the UV light-induced reaction between the indole moiety of tryptophan and haloalkanes can be used to prepare derivatives of tryptophan for chemical cross-linking studies of proteins and peptides.
Owner:UNIV TECH INT +1
Imaging spectroscopy based on multiple pan-chromatic images obtained from an imaging system with an adjustable point spread function
ActiveUS7385705B1Avoid introduction of noiseHigh resolutionRadiation pyrometryInterferometric spectrometryData setDiffusion function
Generating a multispectral or hyperspectral image of an image source with an optical system having an adjustable, wavenumber-dependent point spread function, by collecting panchromatic images of the image source, each of which corresponds to a selected point spread function and includes a measured intensity data set corresponding to a range of wavelengths, transforming the panchromatic images into the spatial frequency domain by using a Fourier transform, solving a matrix equation at each spatial frequency, in which a vector of the transformed panchromatic images is equal to the product of a predetermined matrix of discrete weighting coefficients and a vector representing a wavenumber content of the image source at each spatial frequency, resulting in a determined wavenumber content of the image source in the spatial frequency domain, and inverse transforming the determined wavenumber content of the image source from the spatial frequency domain into the image domain, resulting in the multispectral or hyperspectral image.
Owner:LOCKHEED MARTIN CORP
Method and system for detecting and monitoring hematological cancer
InactiveUS20130137134A1Effective diagnostic toolEstablishing prognosisMicrobiological testing/measurementColor/spectral properties measurementsMedicineMonocyte
A method for diagnosis of a hematological malignancy of a subject is provided. The method comprises obtaining a second derivative of an infrared (IR) spectrum of a population of mononuclear cells by analyzing the population of mononuclear cells by infrared spectroscopy, and based on the second derivative of the infrared spectrum, generating an output indicative of the presence of a hematological malignancy. Other applications are also described.
Owner:BEN GURION UNIVERSITY OF THE NEGEV
A method for rapid and non-destructive analysis of nutritional quality of whole cottonseed based on near-infrared spectroscopy
InactiveCN102279168AEliminate distractionsImprove signal-to-noise ratioColor/spectral properties measurementsNondestructive analysisNutrition
The invention provides a novel fast and non-destructive analysis method for the nutritional quality of cottonseed. The method comprises the following steps: 1) selecting whole cottonseeds of representative cotton varieties as experimental samples; 2) using a near-infrared spectrometer to collect near-infrared spectral data of whole cottonseeds, and the spectral scanning range is 800-2500nm; 3) using the national standard method Accurately analyze the nutritional quality of cottonseed; 4) Preprocess the near-infrared spectrum data; 5) Select spectral variables to eliminate non-informative variables; 6) Use the multivariate correction method to establish the near-infrared spectrum of whole cottonseed and the nutritional value of whole cottonseed 7) Performance evaluation of the calibration model; 8) Collect near-infrared spectral data of the whole cottonseed to be tested, and use the calibration model to predict its nutritional quality after preprocessing the spectral data. The invention has fast analysis speed, does not destroy samples, does not require sample pretreatment, has high detection accuracy, and can analyze various nutritional quality components in cotton seeds at the same time, and provides a convenient, fast and efficient analysis method for cotton breeding and cotton seed inspection.
Owner:ZHEJIANG UNIV
Fluorescent detection of proteins in polyacrylamide gels
InactiveUS20100089753A1Without laborious labeling and staining stepElectrolysis componentsVolume/mass flow measurementSpectroscopyTryptophan
The mechanism of the UV light-induced reaction between the indole moiety of tryptophan and chloroform, and the structure of the modified tryptophan and polypeptides including such modified tryptophan residues. The excited indole moiety, which is formed upon UV light irradiation, emits a solvated electron which initiates a series of events that yield fluorescent derivatives that have CHO group covalently bound to the indole moiety. These derivatives are herein referred to as formyltryptophan, and are relatively stable. Similar reactions are observed when 5-hydroxytryptophan, 5-fluorotryptophan, or N-methylindolacetate are used in place of tryptophan, or when other haloalkanes, such as trichloracetic acid, trichlorethanol, trichlorethane, bromoform, and iodoactetate are used in place of chloroform. The derivatives can be used in a variety of applications in fluorescence spectroscopy, and for nuclear magnetic resonance, X-ray crystallography, infra-red spectroscopy, circular dicroism and mass spectroscopy. Additionally, the UV light-induced reaction between the indole moiety of tryptophan and haloalkanes can be used to prepare derivatives of tryptophan for chemical cross-linking studies of proteins and peptides.
Owner:UNIV TECH INT +1
Method for detecting multivariate adulteration of edible oil based on near-infrared spectroscopy
ActiveUS20190162658A1Easy to operateShort in sample detection timeMaterial analysis by optical meansTesting foodVegetable oilSpectral database
A method for multivariate adulteration detection on an edible oil includes (1) construction of a model: S1, acquiring near-infrared spectra of edible oils; S2, establishing a near-infrared spectral database of the edible oils; S3, establishing a multivariate adulteration detection model for a type of edible oil; and (2) application of the model: acquiring spectra of a sample to be tested according to the near-infrared spectral signal acquisition method in step S1, preprocessing the obtained near-infrared spectra by using the method in step S2 to obtain near-infrared spectral data of the sample, and determining the authenticity of the sample to be tested by using the multivariate adulteration detection model for the edible oil established in step S3. The method is simple and rapid in operation, can effectively and rapidly screen the authenticity of an edible vegetable oil, and has strong practicability.
Owner:INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
Efficient data extraction method for high-temporal-and-spatial- resolution near infrared spectroscopy system
An efficient method for the extraction of hemodynamic responses in Near-Infrared Spectroscopy (NIRS) systems is proposed to increase the spatial and temporal resolution without hardware overhead. The performance improvement is attributed to high Signal-to-Noise-Ratio (SNR) receivers, a modulation scheme, and a Multi-Input-Multi-Output (MIMO) based data extraction algorithm. The proposed system shows an over 2× increment in the figure of merit (FOM) compared to conventional designs. Experimental results support the validity of the proposed system.
Owner:KOREA ADVANCED INST OF SCI & TECH
3D printing detection method based on infrared spectroscopic analysis
ActiveCN104400998ASelf-correctionGuaranteed printing effectColor/spectral properties measurements3d printerComputer science
The invention discloses a 3D printing detection method used for detecting whether a current 3D-printed surface material is consistent with a design sample at real time. A 3D printer contains a 3D printer body and a movable infrared spectrometric analyzer (containing infrared total reflection accessories), and is simultaneously provided with error correction software for correcting or choosing to reprint by comparing infrared spectrum of a test point with standard spectrum of the design sample. According to the invention, accuracy of a material used for a printed object can be monitored at real time, defective rate of printing is reduced, unnecessary material wastage is minimized, and time is saved.
Owner:FUZHOU UNIV
Method for assessing insulation aging state of cable
InactiveCN105486832AAvoid bias in resultsAccurate assessmentTesting metalsObservational errorThermal ageing
The invention discloses a method for assessing insulation aging state of a cable. The method comprises the following steps: slicing a cable sample, performing thermal ageing at two temperature points of 140 DEG C and 160 DEG C, taking out the sample after completely ageing and standing by for 24h at room temperature; performing tensile test, differential scanning calorimetry test, infrared spectroscopy test and thermal gravity test on the sample after ageing, and acquiring the related data parameters; and representing the insulation aging state of the cable according to the data parameters, so as to assess the insulation aging state of the cable. According to the method for assessing the insulation aging state of the cable, provided by the invention, the result deviation caused by measurement error can be avoided and the assessment for the aging state is more accurate.
Owner:SHENZHEN POWER SUPPLY BUREAU +1
Method of assessing tissue viability using near-infrared spectroscopy
InactiveUS7729747B2Raise the possibilityDetermination of the viability of the tissueSensorsBlood flow measurementTissue viabilityTissue oxygenation
Prolonged and severe tissue hypoxia results in tissue necrosis in pedicled flaps. We demonstrate the potential of near-infrared spectroscopy for predicting viability of compromised tissue portions. This approach clearly identifies tissue regions with low oxygen supply, and also the severity of this challenge, in a rapid and non-invasive manner, with a high degree of reproducibility. Early, nonsubjective detection of poor tissue oxygenation following surgery increases the likelihood that intervention aimed at saving the tissue will be successful.
Owner:NAT RES COUNCIL OF CANADA
Method for classifying seeds, comprising the usage of infrared spectroscopy
InactiveUS20130229647A1Radiation pyrometryScattering properties measurementsBiologyInfrared spectroscopy
A method for classifying sugar beet seeds, comprising the steps of measuring an IR-spectrum of each seed, preferably sugar beet seeds, classifying seeds according to their IR-spectrum, wherein the seed-class differs from other seed-classes by a quality of composition, wherein said quality of composition is reflected in a specific IR-spectrum. In one embodiment the seeds are sorted according to their classification by a sorting means.
Owner:SYNGENTA PARTICIPATIONS AG
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