Abstract: Methods and devices for cytometric analysis are provided. A cytometry apparatus is provided which may be used with a stationary sample cuvette for analysis of a stationary sample or with a flow sample cuvette for analysis of a flowing sample. The methods and devices provided herein may be used to perform cytometric analysis of samples under a wide range of experimental and environmental conditions.

Abstract: A method for molecular chirality detection is described. The method includes providing a substrate defining an array of hole-disks, each hole-disk coupled with an asymmetric optical cavity. Each asymmetric optical cavity having a back reflector separating a plasmonic pattern by an appropriate selection of thickness. The substrate is illuminated to simultaneously excite two degenerate localized surface plasmon modes producing a strong chiral near-field. The method may also include generating a characterization of chiral molecules on the substrate based on the strong chiral near-field. Substrates and detectors for molecular chirality detection are also described.

Abstract: An embodiment provides a method for measuring aluminum concentration in an aqueous sample, including: preparing a chromeazurol S indicator solution; placing the chromeazurol S indicator solution in a sample containing aluminum, wherein the placing causes the chromeazurol S to chelate aluminum within the sample creating a colored complex; and measuring, using colorimetric techniques, a concentration of aluminum within the sample, wherein the measuring comprises measuring an absorbance at a wavelength for the colored complex. Other embodiments are described and claimed.

Abstract: A weld scanner for a real-life bridge and scanning method thereof is disclosed. The weld scanner includes a running portion and a scanning portion mounted on a scanner chassis. A front end and a tail end of the scanner chassis are both provided with a laser range finder. A magnet is arranged at a bottom portion of the scanner chassis. The scanning portion includes a probe slider, a bendable metal pipe and a probe connected in sequence. A gear is arranged on the probe slider, and the gear is meshed with a rack inside a scanner chassis chute. The weld scanner scans while the running portion moves forward along a weld, and scans a suspected defect position more carefully when a magnetic field change is detected.

Abstract: A spectrometry device includes a first converter that processes a reception signal based on an irradiation light from a first emitter, a second converter that processes a reception signal based on an irradiation light from a second emitter, and a controller that controls the first emitter and the second emitter. The reception signal based on the irradiation light irradiated from the first emitter includes a first reception signal and a second reception signal that each include information that relates to an optical spectrum. When the controller stops the operation of the second emitter, the first converter converts the first reception signal into a first digital signal and the second converter converts the second reception signal into a second digital signal.

Abstract: A multispectral sensor device may include a sensor array comprising a plurality of channels and one or more processors to determine that a time-sensitive measurement is to be performed, wherein the time-sensitive measurement is to be performed using data collected by one or more channels of the plurality of channels; cause the data to be collected by a proper subset of channels, of the plurality of channels, wherein the proper subset of channels includes the one or more channels; and determine the time-sensitive measurement based on the data.

Abstract: A multi-analyte sensor system based on hollow core photonic bandgap fiber and Raman anti-Stokes spectroscopy. The system includes: i) an inlet to introduce an analyte sample into an analyzer chamber which analyzer includes; ii) a measurement system to derive the anti-Stokes spectral peaks and/or spectra of the sample; iii) a set of reference calibrants corresponding to the analytes of which the sample is primarily comprised; iv) a second inlet to introduce said calibrants into the analyzer chamber; v) a second measurement system to derive the anti-Stokes spectral peaks and/or spectra of the calibrants vi) an outlet through which the sample and calibrants are expelled from the analyzer chamber.

Abstract: Monitoring and detection of algae in surface water and wastewater is of significant importance, yet there is currently no quick and simple method to achieve this. The present work illustrates a new method to determine the concentration of algae in water and wastewater samples using spectrophotometry, the first derivative of absorbance, and a smoothing technique applied to the first derivative of absorbance (e.g. Savitzky-Golay). The relationship between algal concentration and absorbance for three types of water samples (distilled, surface, and wastewater) was determined in the visible wavelength range, and the effect of using the first derivative of absorbance method on improving algal concentration detection limit was established. Using the first derivative of absorbance method improves algal detection limits, reduces the effect of background absorbance and the resolution of overlapping spectra.

Abstract: There is provision of a method of determining wastage including: processing a substrate using a plasma generated by multiple gases including fluorine gas; obtaining light emission intensity of each gas of the multiple gases including fluorine gas from the plasma, by an optical emission spectrometer (OES); and calculating a wastage rate of a particular expendable part from the obtained light emission intensity of each gas of the multiple gases including fluorine gas, with reference to a storage section storing a wastage rate of the particular expendable part in association with the light emission intensity of each gas of the multiple gases including fluorine gas.

Abstract: Provided is a gel particle measuring apparatus for detecting scattered light generated by light irradiation at a production start time point of a gel particle, and performing measurement promptly and accurately while suppressing attenuation of the scattered light in a solvent in which the phenomenon occurs.

Abstract: Systems and methods for transmitting power and information using acoustic energy produced by transducers are provided. The systems have particular application for powering and communication with electronics through drilling and pipe systems. Pairs of acoustic wedges holding transducers are provided for sending energy and information through a substrate which may be a steel pipe. Each wedge has an angled transducer which can be used to produce shear waves. The waves propagate through the substrate and are received by a second acoustic wedge. The shear waves, on reaching the second acoustic wedge, are converted back into electrical signals by a second transducer. Tangential shear waves, high, shallow wave transmission angles, and direct steel-steel bonding between wedges and substrates may be used.

Abstract: An optoelectronic module includes a non-transitory computer-readable medium comprising machine-readable instructions stored thereon, that when executed on a processor, perform operations for calibrating the optoelectronic module and collecting distance data with the optoelectronic module. Methods for calibrating and collecting distance data include using an optoelectronic module with the non-transitory computer-readable medium that includes the aforementioned instructions. In some instances, a first target is highly reflective, and a second target is highly absorbing.

Abstract: An apparatus for processing a biological sample for optical analysis having a cartridge with a sample supply container and a couvette, a cartridge/magazine holding the cartridge, and a cassette fan positioned over the cartridge. A filter cassette is mounted within the cassette fan, wherein the filter cassette has an inlet for receiving a sample from the sample supply container, an outlet for discharging the filter sample into the couvette, and valves therein to manipulate the sample for filtering. A cassette clamp is positioned over the filter cassette to secure the cassette and operate the filter cassette. A method for implementing this apparatus is also described herein. Additionally an apparatus is used for and a method measures waste fluid that passes over a filter element to control the amount of rinse fluid passing over the filter element.

Abstract: A method of detecting a support structure in a navigational controller includes: controlling a depth sensor to capture a plurality of depth measurements corresponding to an area containing the support structure on a ground plane; generating, for each of the depth measurements, a projected depth measurement on the ground plane; selecting a boundary set of the projected depth measurements defining a boundary of the projection; selecting, based on angles between adjacent pairs of the boundary set of projected depth measurements, a subset of the projected depth measurements; generating a region of interest based on the subset of the projected depth measurements; retrieving a candidate subset of the depth measurements corresponding to the projected depth measurements in the region of interest; and generating a support structure plane definition based on the candidate subset of depth measurements.

Abstract: The present invention provides methods and devices for determining end of life of a light fixture by comparing the light output of a control LED of the fixture with the light output of an illumination LED of the fixture. The control LED is energized for a short period of time for the purpose of measuring its light output. The illumination LED is energized for the duration of time of the light fixture itself. In this way, the amount of degradation of the illumination LED can be determined by comparison with the control LED. If the light output of the illumination LED falls below a threshold level, actions may be take, such as, for example, sounding an alarm.

Abstract: Certain aspects pertain to a combination sensor comprising a set of physical sensors facing different directions proximate a structure, and configured to measure solar radiation in different directions. The combination sensor also comprises a virtual facade-aligned sensor configured to determine a combi-sensor value at a facade of the structure based on solar radiation readings from the set of physical sensors.

Abstract: Apparatuses, methods, and systems for detecting a substance are disclosed. One system includes a light source, an optical cavity, a cavity detector, and a processor. The light source generates a beam of electro-magnetic radiation, wherein a wavelength of the beam of electro-magnetic radiation is tuned to operate at multiple wavelengths. The optical cavity receives the beam of electro-magnetic radiation, wherein the physical characteristics of the cavity define a plurality of allowed axial-plus-transverse electro-magnetic radiation modes, wherein only a subset of the allowed axial-plus-transverse electro-magnetic radiation modes are excited when the optical cavity receives the beam of electro-magnetic radiation. The cavity detector senses electro-magnetic radiation emanating from the optical cavity.

Abstract: A device for determining the water content in the atmosphere comprising: a laser transmitter suitable for transmitting a laser beam for illuminating particles of water and/or ice present in the atmosphere, a first out-of-focus imager having a first collection angle suitable for capturing at least one first representative image of the particles, and processing unit in communication connection with the first image. The device further comprises a second out-of-focus imager having a second collection angle suitable for capturing at least one second image. The processing unit is in communication connection with the second imager, the processing unit being suitable for processing the first and second images in order to determine the water content in the atmosphere.

Abstract: Various authentication systems may benefit from detection of counterfeits. More particularly, certain authentication systems may benefit from a counterfeit detection scheme applicable to paper surfaces that can employ mobile cameras, such as the cameras associated with mobile phones. A method, according to certain embodiments, can include illuminating a surface of an item with a lighting source of a device. The method can also include capturing a plurality of images of the surface by a camera of the device during the illumination of the surface. The method can further include authenticating the item based on the plurality of images.

Abstract: The invention relates to a method for determining the color of a cosmetic product adapted to the skin of a wearer of the cosmetic product, the method including the following steps: —supply data related to the color of the wearer's skin, —determine the color of the cosmetic product by using a correspondence function applied to data about the color appearance of the wearer's skin, the correspondence function associating a cosmetic product color with a wearer's skin color appearance, the correspondence function having at least three reference associations, a reference association associating a predetermined cosmetic product color with a predetermined wearer skin color within a tolerance, the tolerance being equal to a distance of 2 in the L*a*b* color space.