Abstract: A device may include a collimator positioned between a radiation source of a scanner and a bore of the scanner. The bore may include a detecting region configured to accommodate a subject. The collimator may be configured to prevent at least one portion of radiation rays emitted from the radiation source from being incident on the subject. The device may further include a first filter and a second filter. The first filter may be positioned between the radiation source and the collimator. The second filter may be positioned between the collimator and the bore. The first filter and the second filter may be configured to adjust a distribution of radiation impinging upon the subject.

Abstract: A method of surface logging a well includes adding each of multiple polymeric taggants to a circulating drilling fluid in an addition sequence while drilling the well. Each polymeric taggant includes a polymer and a respective fluorescent dye having an emission wavelength or excitation wavelength different from that of each other fluorescent dye. The method includes taking a sample of drill cuttings carried by a drilling fluid while drilling a well, wherein the sample of drill cuttings includes polymeric taggants attached to the drill cuttings. The method includes extracting the dyes from the sample of drill cuttings into an extract solution; determining an indication of the type of and the concentration of each of the dyes in the extract solution; and determining a depth associated with the sample of drill cuttings based on the indication of the concentration of each of the dyes and on the addition sequence.

Abstract: Methods of accurately estimating erythemaly-weighted UV exposure, such as the UV Index, and sensors adapted for the same.

Abstract: A method for the radiographic imaging of a three-dimensional internal structure which forms part of an object located within a field of view, a radiographic image processing device and a radiographic imaging device, which are particularly suitable for locating a characteristic point of an internal structure on a radiographic image.

Abstract: An X-ray detector is positioned relative to an X-ray source such that at least a part of a region between the X-ray source and the X-ray detector is an examination region for accommodating an object. The X-ray source and X-ray detector are controlled by a processing unit in order to operate in a first imaging operation mode, a second imaging operation mode, and/or a third imaging operation mode. The detector comprises a first scintillator, a second scintillator, a first sensor array, and a second sensor array. The first scintillator is disposed over the second scintillator such that X-rays emitted from the X-ray source first encounter the first scintillator and then encounter the second scintillator.

Abstract: The present application discloses a coal consumption online measuring system, which belongs to the field of analysis and measurement technology. The system includes an equivalent atomic number measuring device, a flow rate measuring device, an ash content measuring device, a volatile content measuring device, a moisture content measuring device and a data acquisition and processing device. The data acquisition and processing device iteratively corrects the measured real-time density, real-time ash content, real-time moisture content and/or real-time volatile content; and the data acquisition and processing device performs online calculation of the coal consumption according to a real-time volume flow rate and the iteratively-corrected real-time density, real-time ash content, real-time moisture content and real-time volatile content.

Abstract: Embodiments of the present disclosure provide optical methods and systems to evaluate the performance of a demulsifying agent in wellbore fluid. The present embodiments provide an optical system which scans wellbore fluid in order to detect the phase separation caused by a demulsifying agent. Using spectral data, the optical system quantifies the opacity and/or transparency of the different phases in the wellbore fluid in order to evaluate the demulsifying agent.

Abstract: Methods and systems for selecting mode(s) for inspection of specimens are provided. One method includes statistically predicting if data points in a set correspond to defects or nuisances on a specimen. The data points include attribute(s) determined for discrete locations on the specimen from output generated by two or more modes of an inspection system. Events have been detected at the discrete locations with at least one of the modes. The method also includes determining a quantitative measure for each of two or more different combinations of the modes thereby determining different quantitative measures. The quantitative measure for each of the different combinations is responsive to how well one of the combinations detects the defects and minimizes detection of the nuisances. The method further includes selecting one or more of the modes for inspection of specimens of the same type as the specimen based on the determined quantitative measures.

Abstract: A disclosed flat type lamp for a photoionization detector includes: a first plate member having a plate shape and having a first surface on which a plurality of discharge cavities is formed; a second plate member isolating the plurality of discharge cavities from the outside by being disposed and sealed on the first surface of the first plate member; electrodes disposed on the first and second plate members and arranged to face each other; and a discharge gas filled in the plurality of discharge cavities and producing vacuum ultraviolet using electric force that is applied through the electrodes.

Abstract: A method of detecting an amine-based shale inhibitor in a wellbore servicing fluid (WSF) comprising contacting an aliquot of the WSF with an amine detector compound to form a detection solution; wherein the WSF comprises the amine-based shale inhibitor; and wherein the detection solution is characterized by at least one absorption peak wavelength in the range of from about 380 nm to about 760 nm; detecting an absorption intensity for the detection solution at a wavelength within about ±20% of the at least one absorption peak wavelength; comparing the absorption intensity of the detection solution at the wavelength within about ±20% of the at least one absorption peak wavelength with a target absorption intensity of the amine-based shale inhibitor to determine the amount of amine-based shale inhibitor in the WSF; and comparing the amount of amine-based shale inhibitor in the WSF with a target amount of the amine-based shale inhibitor.

Abstract: A method for adjusting an openable angle of display screens, and a multi-screen terminal. The method includes: detecting, by a multi-screen terminal, an intensity of ambient light and a corresponding light incident angle of each display screen, and obtaining a currently used display screen as well as a viewpoint angle between the currently used display screen and a user; judging, by the multi-screen terminal, whether the intensity of ambient light corresponding to a light incident angle having the smallest difference with the viewpoint angle is greater than a preset value, and adjusting, under the condition that the viewpoint angle is greater than the preset value, an openable angle between the display screens until the multi-screen terminal judges that the intensity of ambient light corresponding to the light incident angle that is closest to the current viewpoint angle is less than or equal to the preset value.

Abstract: Provided is a device for detecting a defect of an optical film, comprising a light emitting unit, a reflection unit, a screen, and an image capturing unit, and a method for detecting a defect of an optical film, comprising emitting light to a reflection unit, projecting the light reflected by the reflection unit onto an optical film, capturing an image of a screen which displays a projection shape obtained by projecting the light onto the optical film, and analyzing the image.

Abstract: Downhole neutron generators, downhole logging tools that utilize neutron generators, and methods to auto tune downhole neutron generators are disclosed. While a neutron generator is deployed in a borehole of a wellbore, the method includes determining whether an oscillation cycle of an ion beam current generated by the neutron generator is stable. After a determination that the oscillation cycle of the ion beam current is stable, the method includes determining proportional, integral, and derivative parameters of a proportional-integral-derivative controller that is operable to adjust an amount of power supplied to generate ions. The method further includes adjusting a replenish voltage of a replenish power supply of the neutron generator based on the proportional, integral, and derivative parameters.

Abstract: The present disclosure relates to a system for PET imaging. The system may include a first device and a second device. The first device may include a first scanning channel. The second device may include a second scanning channel connected to the first scanning channel, a heat generating component, and a cooling assembly configured to cool the heat generating component, wherein the cooling assembly may include an inlet chamber and a return chamber, the heat generating component may be closer to a first side of the second device than at least one of the inlet chamber or the return chamber, and the first side of the second device may face the first device.

Abstract: Provided is a fine particle measuring device and the like at least including at least two light sources having different wavelength region, a detection unit that detects light from a fluorescent reference particle in accordance with excitation light from the light sources, and an information processing unit that compares, on the basis of information detected by the detection unit, a feature quantity of an output pulse based on a reference light source among the plurality of light sources with a feature quantity of an output pulse based on at least another light source among the plurality of light sources, and adjusts an output of the another light source.

Abstract: A method of measuring temperature based upon a system of equations applying Stefan-Boltzmann's law and using a measurement value for an object to be measured and an ambient temperature value (Ta) comprises: pre-calculating (200, 202) a first vector (LUT1) and a second vector (LUT2). The first vector (LUT1) is a series of values proportional to received power based upon respective temperature values and in respect of a predetermined generic range of temperatures. The second vector (LUT2) is a series of sensitivity characteristic factor values based upon expected measured temperature values and in respect of a predetermined range of expected object measured temperatures. The first vector (LUT1) and the second vector (LUT2) are used (206) to generate a temporary vector (LUTT) of a series of values limited to the ambient temperature value to solve the system of equations in respect of the measurement value for the object, thereby determining (208) a temperature (To) for the object from the measurement value.

Abstract: A gas analyzer for measuring a respiratory gas component includes an emitter that emits two different wavelengths of infrared (IR) radiation in to a measurement chamber containing a respiratory gas, wherein the two different wavelengths include a first IR wavelength and a second IR wavelength. The gas analyzer further includes a first IR detector, a second IR detector, and a beam splitter. The beam splitter is configured to receive the two different wavelengths of radiation emitted by the emitter and to split the two wavelengths of radiation so as to reflect the first IR wavelength to the first IR detector and reflect the second IR wavelength to the second IR detector.

Abstract: A laser beam monitoring system configured to monitor an attribute of an incident laser beam (24), the laser beam monitoring system comprising a beam separating element (30) and a plurality of sensors (34a-34d), wherein the beam separating element is configured to form a plurality of sub-beams (24a-24d) from the incident laser beam (24), a first sub-beam being directed towards a first sensor of the plurality of sensors and a second sub-beam being directed towards a second sensor of the plurality of sensors, wherein relative intensities of the first and second sub-beams are determined by a spatial position at which the incident laser beam is incident upon the beam separating element.

Abstract: According to an embodiment, a device comprises: a scintillator layer configured to convert x-ray or gamma ray photons into photons of visible light; a photodiode layer configured to convert visible light produced by the scintillator layer into an electric current; an integrated circuit, IC, layer situated below the photodiode layer and configured to receive and process the electric current; wherein electrical contacts of the IC layer are connected to electrical contacts of the photodiode layer using wire-bonding; and wherein the wire-bonding is covered with a protective material while bottom part of the IC layer is left at least partly exposed. Other embodiments relate to a detector comprising an array of tiles according to the device; and an imaging system comprising: an x-ray source and the detector.

Abstract: Strontium tetraborate is used as an optical coating material for optical components utilized in semiconductor inspection and metrology systems to take advantage of its high refractive indices, high optical damage threshold and high microhardness in comparison to conventional optical materials. At least one layer of strontium tetraborate is formed on the light receiving surface of an optical component's substrate such that its thickness serves to increase or decrease the reflectance of the optical component. One or multiple additional coating layers may be placed on top of or below the strontium tetraborate layer, with the additional coating layers consisting of conventional optical materials. The thicknesses of the additional layers may be selected to achieve a desired reflectance of the optical component at specific wavelengths. The coated optical component is used in an illumination source or optical system utilized in a semiconductor inspection system, a metrology system or a lithography system.