Abstract: On an optical path of a condensing lens (101), a varifocal lens (102) is disposed. The varifocal lens (102) is formed of an electro-optic crystal such as, e.g., potassium tantalate niobate. A condensation position measurement unit (103) measures a condensation position where laser light is condensed by the condensing lens (101). A condensation position control unit (104) controls a focal position of the varifocal lens (102) such that a difference between the condensation position measured by the condensation position measurement unit (103) and a prescribed condensation position that has been set falls within an acceptable range.

Abstract: An anchor is buried in the ground near a place where a utility pole is installed. A guy wire is connected to the utility pole. A guy wire rod couples the anchor and the guy wire. An electrode is buried in the ground near a place where the anchor is buried. A power supply supplies an anti-corrosion current with an underground portion of the guy wire rod and the anchor as a cathode and the electrode as an anode. The power supply includes a photovoltaic cell.

Abstract: An underground radar device and a method thereof are provided that do not require replacement of antennas for transceiving in conformity with the width of a road, and can achieve exploration of a buried object with a single scan. An underground radar device includes a transmission array antenna and a reception array antenna, and further includes a position variable mechanism capable of changing intervals between antenna elements of the transmission array antenna and the reception array antenna while keeping all the intervals equal. The position variable mechanism includes a drive unit, a plurality of crossbars constituting an expandable link, and a plurality of link sections for coupling so as to change inclination angles of a V-shape and an inverted V-shape of the expandable link.

Abstract: A coating film evaluation structure includes a laminate including a first sheet, a second sheet, and a third sheet which are laminated. The second sheet is disposed on the first sheet, and the third sheet is disposed on the second sheet. In the laminate, the area of each sheet gradually reduces in the lamination direction, and a stepped portion is provided at an end portion. The coating film to be evaluated and the plurality of sheets have different colors. The coating film evaluation structure includes a coating film layer formed on the sheet having the largest area among the plurality of sheets so as to cover the other sheets and having a flat surface.

Abstract: An optical operational element which enables a multilayered optical neural network to be constructed without using an optical amplifier is provided. The optical operational element includes: a photothermal conversion unit 30 which converts light energy of input light A into thermal energy; a light intensity variation unit 20 which is in contact with the photothermal conversion unit 30 and which varies, in accordance with a temperature variation accompanying heat generation or heat absorption by the photothermal conversion unit 30, intensity of external light B that is introduced from the outside; and a housing unit 10 which houses the light intensity variation unit 20 and which introduces the external light B from one side and outputs output light C obtained by attenuating intensity of the external light B to the outside on an opposite side to the one side.

Abstract: A coating material is allowed to contain a sulfate having a higher degree of solubility in water than that of calcium sulfate. The sulfate is an additive for coating materials which is used for reducing the consumption of zinc (including zinc oxide) in a coating film formed from the coating material and the corrosion of a base material when the coating film is scratched. The content of the sulfate can be 0.004 to 0.65 mol per 100 g of the content of zinc. Alternatively, the content of the sulfate may be 0.006 to 0.186 mol per 100 g of a heating residue (except for the sulfate added) of a coating film.

Abstract: A storage unit stores a reference image. A camera captures a film thickness measuring portion of a coating film to be measured. A determination circuit determines whether or not an image captured by the camera and the reference image match. A film thickness meter measures a film thickness of the coating film at the film thickness measuring portion in a case where the determination circuit determines that the image and the reference image match. The film thickness meter measures a film thickness of the coating film by, for example, optical coherence tomography.

Abstract: A corrosion rate estimation apparatus includes a corrosion rate measurement unit adapted to repeat water supply cycles in which water is supplied to soil in which metal to be evaluated is buried and measure a cycle number of each water supply cycle, one or more time points in each cycle, and a corrosion rate of the metal at the time point(s); a learning unit adapted to find a prediction model by accepting the cycle number, the time point(s) in the cycle, and the corrosion rate(s) as input and using a machine learning algorithm, the prediction model representing a future corrosion rate; and a corrosion rate estimation unit adapted to assign a cycle number and a time point in the cycle at which a corrosion rate is desired to be estimated to the prediction model and estimate a corrosion rate of the metal at the time point.

Abstract: An etalon according to the present invention is an etalon in which light is made incident from a direction different from a direction perpendicular to an incident surface and is emitted from an emission surface facing the incident surface, the etalon comprising a dielectric that has a first end surface on the incident surface side and a second end surface on the emission surface side so as to oppose the first end surface, wherein a refractive index distribution of the dielectric is set in such a manner that a lateral shift of the light becomes smaller between the first end surface and the second end surface as compared with a uniform refractive index distribution etalon under a condition that an optical path length of the light is equal. Therefore, the light according to the present invention can provide excellent wavelength controllability.

Abstract: An optical deflector which includes a dielectric having a paraelectric phase and a trap for storing an electric charge therein and deflects light transmitted through the dielectric by applying a voltage in a direction perpendicular to a transmission direction of the dielectric is provided. The optical deflector includes a first conductor, the dielectric, a second conductor, and two insulators in contact with both side surfaces parallel to a voltage application direction of the dielectric between the first conductor and the second conductor in this order, wherein a voltage is applied between the first conductor and the second conductor, a temperature of the first conductor and the second conductor is controlled independently, and one of the side surfaces of the dielectric is irradiated with excitation light through one insulator.

Abstract: An accelerated corrosion test apparatus includes: a moisture sensor disposed near the reinforcing steel exposed from a cracked portion of concrete; a weight measuring instrument that measures a weight of the reinforced concrete specimen; and a control terminal that is connected both to the moisture sensor and to the weight measuring instrument and controls a temperature and humidity control device, thereby alternately and repeatedly performing a wetting step of supplying moisture to the inside of a crack in the cracked concrete, and a drying step of removing moisture in the inside of the crack and moisture on the exposed surface of the reinforcing steel, wherein the control terminal terminates the wetting step and starts the drying step when moisture is detected in the moisture sensor, or when change in slope of weight change of the reinforced concrete specimen is detected, after the start of the wetting step.

Abstract: A calculation processing system includes: a first processing device including a first computer and a first movement control management device; and a second processing device including a second computer and a second movement control management device, the first processing device and the second processing device are connected with each other, the temperature of a place where the first processing device is installed is higher than the temperature of a place where the second processing device is installed, and the second computer executes calculation in a virtual machine migrated from the first computer, exhausts heat generated in association with the calculation, and transmits a result of the calculation to the first computer.

Abstract: A structure is made of a metal such as a steel material and is buried in the ground. A first wiring is connected to the structure. A second wiring is connected to an electrode. A switch turns on and off a conduction state between the first wiring and the second wiring. In a state where the switch is turned on, the electrode is in a higher potential state as compared to the structure. The electrode can be made of a metal having an ionization tendency lower than that of the metal included in the structure.

Abstract: An optical deflector has a dielectric of a paraelectric phase and deflects light transmitted through the dielectric by applying a voltage in a direction perpendicular to a transmission direction of the dielectric, the optical deflector including, in order, a first temperature control element, a first conductor on which a first sensor is disposed, the dielectric, a second conductor on which a second sensor is disposed, and a second temperature control element, wherein a voltage is applied between the first conductor and the second conductor, the dielectric is irradiated with excitation light having a substantially uniform intensity in an application direction of the voltage, and a temperature of the first conductor and a temperature of the second conductor are set to predetermined temperatures.

Abstract: Provided is a deterioration detection device including a battery including a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. Furthermore, the deterioration detection device includes a container that covers and houses the battery and is to be embedded in a metal structure being a target of detecting a corrosion thinning state. Furthermore, the deterioration detection device includes a detection unit that detects a current or a voltage output from the battery in an electromotive state and outputs that the metal structure is corroded and thinned.

Abstract: A structure includes a base made of a metal such as a steel material, and a reference portion made of a material that is not corroded in a corrosive environment of the metal. The reference portion is embedded in the base such that one end is exposed to form the same plane as a surface of the base. The reference portion is formed in a rod shape extending from the surface of the base toward the inside of the base.

Abstract: In a first step, a sample formed of a polyester or decomposition products of a polyester is dissolved in a pretreatment liquid containing 1,1,1,3,3,3-hexafluoro-2-propanol and an organic base to produce a reaction product of the sample, and in a second step, the obtained reaction product is mixed into a solvent (measurement solvent) containing deuterated chloroform and deuterated 1,1,1,3,3,3-hexafluoro-2-propanol to fabricate a sample liquid. Next, in a third step, the amount of the reaction product in the sample liquid is measured through NMR aiming at hydrogen atoms to determine the amount of an acid anhydride structure in the sample.

Abstract: A temperature measuring device includes a Fabry-Perot interferometer, a power supply, and a light source. The temperature measuring device observes the light emitted from the light source and transmitted through the Fabry-Perot interferometer and obtains the temperature of a measurement environment in which the Fabry-Perot interferometer is placed. The light source emits a plurality of lights to the Fabry-Perot interferometer.

Abstract: A diffraction element device includes a diffractive element and a power source, the diffractive element includes a substrate and a plurality of multi-step structures, each of the multi-step structures is composed of a plurality of steps, an electrode is provided at a part of the multi-step structures, a piezoelectric material or an electrostrictive material is included in a part of the multi-step structures, the power source is connected to the electrode or the substrate, and a height of the multi-step structures changes due to a voltage applied from the power source.

Abstract: A hot water supply system includes a first heat pump, a second heat pump, and a hot water storage tank. The first heat pump heats water stored in the hot water storage tank to make hot water. The second heat pump heats water supplied to the hot water storage tank.