A measurement system is provided with an array of laser diodes with one or more Bragg reflectors. At least a portion of the light generated by the array is configured to penetrate tissue comprising skin. A detection system configured to: measure a phase shift, and a time-of-flight, of at least a portion of the light from the array of laser diodes reflected from the tissue relative to the portion of the light generated by the array; generate one or more images of the tissue; detect oxy- or deoxy-hemoglobin in the tissue; non-invasively measure blood in blood vessels within or below a dermis layer within the skin; measure one or more physiological parameters based at least in part on the non-invasively measured blood; and measure a variation in the blood or physiological parameter over a period of time.

Provided is a method for testing a melt-fabricable fluororesin injection-molded article which enables easy determination of whether or not a tested article is a defective article due to a crack or delamination. The method for testing a melt-fabricable fluororesin injection-molded article includes determining whether or not a melt-fabricable fluororesin injection-molded article is defective due to a crack or delamination based on a stress-strain curve or tensile strength-strain curve obtained by a tensile test performed on the injection-molded article.

A variation in the performance value of a polymer being manufactured can be reduced. A prediction device (10A) that, in manufacturing of a polymer, predicts a performance value indicating performance of the polymer in a polymerization tank after a raw material is fed, and may include: an acquisition unit (111) that acquires, as a prediction observation value, an observation value observed, in current manufacturing of the polymer, as a value related to the manufacturing of the polymer; and a prediction unit (112) that predicts the performance value of the polymer being currently manufactured at a predetermined timing, from the prediction observation value acquired by the acquisition unit, by using a relation between an observation value acquired in past manufacturing of the same type of polymer as the polymer, and a performance value of the polymer at the predetermined timing in the past manufacturing.

A variation in the performance value of a polymer being manufactured can be reduced. A prediction device (10A) that, in manufacturing of a polymer, predicts a performance value indicating performance of the polymer in a polymerization tank after a raw material is fed, and may include: an acquisition unit (111) that acquires, as a prediction observation value, an observation value observed, in current manufacturing of the polymer, as a value related to the manufacturing of the polymer; and a prediction unit (112) that predicts the performance value of the polymer being currently manufactured at a predetermined timing, from the prediction observation value acquired by the acquisition unit, by using a relation between an observation value acquired in past manufacturing of the same type of polymer as the polymer, and a performance value of the polymer at the predetermined timing in the past manufacturing.

An analytical pretreatment method of microplastics includes: placing the microplastics separated by a gravity separation treatment in a sieve; immersing the sieve containing the microplastics in pure water having a depth smaller than a height of the sieve; and lifting the sieve up from the pure water and drying the microplastics contained in the sieve with a constant temperature dryer. Thus, the analytical pretreatment method of microplastics is capable of reducing the influence of a gravity separation solution on the analysis result of the microplastics.

An accelerated life testing (ALT) system for the pressurization of corrosive media, such as seawater, at high pressures and at elevated temperatures (up to about 70° C.) for extended periods of time. The interior of a pressure vessel is coated in an inert ceramic/epoxy coating that provides adequate corrosion protection from the corrosive media. A fabric reinforced nitrile diaphragm separates the corrosive media from hydraulic actuating media, such as oil. The hydraulic actuating media is pressurized, which deforms the diaphragm into the corrosive media, thereby increasing the pressure. The diaphragm and supplementary flouroelastomer seals isolate the corrosive media from pressure generating, monitoring, and safety equipment. The temperature of the entire vessel and contents is maintained by complete immersion in a heated, filtered water bath. The system is particularly useful for ALT experiments on components intended for sea floor and long term deep ocean environment operations at about 6000 psi (41.4 MPa).

An accelerated life testing (ALT) system for the pressurization of corrosive media, such as seawater, at high pressures and at elevated temperatures (up to about 70° C.) for extended periods of time. The interior of a pressure vessel is coated in an inert ceramic/epoxy coating that provides adequate corrosion protection from the corrosive media. A fabric reinforced nitrile diaphragm separates the corrosive media from hydraulic actuating media, such as oil. The hydraulic actuating media is pressurized, which deforms the diaphragm into the corrosive media, thereby increasing the pressure. The diaphragm and supplementary flouroelastomer seals isolate the corrosive media from pressure generating, monitoring, and safety equipment. The temperature of the entire vessel and contents is maintained by complete immersion in a heated, filtered water bath. The system is particularly useful for ALT experiments on components intended for sea floor and long term deep ocean environment operations at about 6000 psi (41.4 MPa).

Embodiments relate to an aligner breakage solution that tests damage to an aligner using machine learning. A method includes of training a machine learning model to predict damage to an orthodontic aligner includes gathering a training dataset comprising digital designs for a plurality of orthodontic aligners, wherein each digital design is associated with a respective orthodontic aligner of the plurality of orthodontic aligners, and wherein each digital design comprises metadata indicating whether the associated respective orthodontic aligner was damaged during manufacturing of the associated respective orthodontic aligner. The method further includes training the machine learning model using the training dataset, wherein the machine learning model is trained to process data from a digital design for an orthodontic aligner and to output a probability that the orthodontic aligner associated with the digital design will be damaged during manufacturing of the orthodontic aligner.

A resin impregnation measurement system includes first electrodes, second electrodes, a measurement controller, and an impregnation ratio deriving unit. The first electrodes extend in parallel. The second electrodes are disposed so as to oppose to the first electrodes across a container and extend in a direction intersecting the first electrodes. The container is configured to be filled with a resin. The measurement controller is configured to sequentially switch between the first electrodes and the second electrodes and measure electrostatic capacities of measurement regions where the first electrodes are opposite to the second electrodes. The impregnation ratio deriving unit is configured to derive an impregnation ratio of the resin to the fiber base material in the container on a basis of a distribution of the electrostatic capacities of the measurement regions.

Provided is a method for determining origin of carbon source of chemical substance, which makes it possible to determine whether resource-recycled carbon is used as a carbon raw material from a chemical substance in various goods. The method for determining origin of carbon source of chemical substance includes: a step S1 of acquiring a carbon-14 content rate R.sub.1 of a standard chemical substance having carbon element in which carbon has been recycled as a resource; a step S2 of acquiring a carbon-14 content rate R.sub.2 of a chemical substance to be identified; a step S3 of calculating a ratio (R.sub.2/R.sub.1) of the content rate R.sub.2 to the content rate R.sub.1; and a step S4 of determining that a carbon raw material in the chemical substance to be identified contains resource-recycled carbon based on the ratio (R.sub.2/R.sub.1).