Abstract: A method of pretreating a sample including biological particles, the method including a step of acquiring a fraction (1b) which passes through a sieve (A) having meshes of 250 to 1000 ?m and does not pass through a sieve (B) having meshes of 32 to 63 ?m by sieving a sample including biological particles as a detection target, and a step of adding a colloidal solution having a density of 1.10 to 2.45 g/cm3 to the fraction (1b), subjecting the resultant solution to centrifugation, and acquiring a supernatant fraction (S0) after the centrifugation.

Abstract: A transmission device of a submarine resource exploration system includes a transmission unit which transmits a predetermined transmission artificial signal transmitted in order to perform exploration of submarine resources in water using water as a medium. A reception device includes a reception unit which receives a composite signal of a received artificial signal representing a signal propagated to the reception device using water as a medium in the transmission artificial signal, and a self-potential propagated to the reception device using water as a medium due to a potential anomaly generated due to submarine resources. A signal processing device includes a signal processing unit which separates the composite signal into the received artificial signal and the self-potential.

Abstract: Image recording as long as possible during one activity is required in deep sea exploration. Necessity of multi-directional image recording, optical and chemical observations and probing of mineral resources of seabed are also increased. There is no underwater exploration device enable these requirements. It is disclosed that at least one battery-driven underwater exploration body having three pressure-resistant hollow glass spheres for housing an image capturing device, an illumination device, a recording device, an acoustic communication device and a control device controlling thereof and at least one battery body having an approximately the same shape and structure as the underwater exploration body are connected with each other by a connecting tool to provide the connectedly-formed underwater exploration device.

Abstract: The disclosed invention is device for preparation of an emulsion and a method for producing an emulsion. The method comprises the steps of: (1) causing water and a water-insoluble substance that is to be emulsified to become freely miscible under conditions of temperature and pressure in the vicinity of the vapor-liquid critical point of water; and (2) cooling the product comprised of the water-insoluble substance and water solved each other in the presence of a surfactant to obtain a liquid comprised of the water-insoluble substance dispersed in water or a liquid comprised of water dispersed in the water-insoluble substance. The present invention provides a new device and a new method for producing emulsions with high efficiency without requiring a long period of processing or a great amount of energy.

Abstract: The object is to provide a method that enables detection of unknown virus sequences and efficient detection and search of viruses. The method comprises the step of randomly fragmenting an objective double-stranded (ds) RNA to obtain dsRNA fragments; the step of subjecting the obtained dsRNA fragments to a reverse transcription reaction and then performing polymerase chain reaction (PCR) to obtain corresponding DNA fragments; and the step of subjecting the obtained DNA fragments to a sequence analysis operation to determine the sequences. The reverse transcription reaction is preferably started from the 3? ends of the dsRNA fragments.

Abstract: The present invention provides an unmanned watercraft capable of sufficiently cooling equipment that generates a large amount of heat, capable of cooling such equipment without using energy in the watercraft, and capable of improving mean time between failures (MTBF) of a cooling device. An unmanned watercraft 1 has a cooling structure CS for cooling a central processing unit CPU1 for image recognition and a central processing unit CPU2 for control that constitute a central processing unit CPU as a heat-generating body. The cooling structure CS includes a waterproof container 7 that accommodates the heat-generating body (an insulating envelope that surrounds the heat-generating body in an electrically insulated state). The waterproof container 7 is arranged outside a submerged part 3 of the unmanned watercraft 1 so as to be in contact with water present outside the unmanned watercraft 1, the submerged part 3 being submerged in water.

Abstract: Exploration of resources of the bottom of water such as a seafloor based on a self-potential is accurately performed. A computer of a resource estimation system includes an estimation information acquisition unit that acquires potential information indicating potentials of a plurality of potential electrodes having a predetermined positional relationship measured at a plurality of positions in water, a noise removal unit that removes noise contained in the measured potentials by performing principal component analysis or independent component analysis using the potentials, and a resource estimation unit that estimates the presence of the resources in the bottom of water based on the potential from which the noise has been removed.

Abstract: A simulation apparatus includes: a view factor calculation means for calculating a view factor related to each two elements in a virtual three-dimensional space that is defined by a plurality of surface elements and a plurality of volume elements, the view factor calculation means calculating, as a view factor related to two element including one or two elements, a view factor decreased by a value corresponding to a quantity of radiation heat passing through the one or two volume elements; and a radiation heat quantity calculation means for calculating a radiation heat quantity exchanged between each two elements using each view factor calculated by the view factor calculation means, and the three-dimensional space of the simulation device is defined so that a plurality of trees in the three-dimensional space are treated as the plurality of volume elements.

Abstract: A simulation apparatus for calculating unsteady spatial distributions of wind speed, temperature, etc. in a simulation target space where buildings and trees exist. The simulation apparatus calculates unsteady spatial distributions of wind speed, temperature, etc. in the simulation target space, taking into consideration the effect of the radiation heat absorbed each element and the effect of exchange of heat and water vapor between the trees and the atmosphere.

Abstract: An acoustic communication system includes a first acoustic communication apparatus and a second acoustic communication apparatus. The first acoustic communication apparatus transmits a first acoustic wave to the second acoustic communication apparatus. The second acoustic communication apparatus transmits, as a response, a second acoustic wave to the first acoustic communication apparatus continuously in constant cycles until a next first acoustic wave is received. Each cycle includes a transmission period and a pause period.

Abstract: A concave section such as an extension section, a cutting section, and a notch section is provided to receive a lid of a float valve in an inside of outer tube assembly of a drill string. Thus, when the float valve is provided for the drill string, it is made possible to collect a core with a larger diameter by a thinner drill string, by expanding the inner diameter of the drill string.

Abstract: Provided herein is a preprocessing apparatus for gas analysis that enables preprocessing for gas analysis to be performed without requiring a cryogen. A preprocessing apparatus for gas analysis 101 mainly includes a gas flow path 103, a cooling portion 105, and a plurality of valves V101 to V105 that serve as gas flow path connection changing means for changing the gas flow path. The cooling portion 105 is operable to cool the collecting portion 113, and is constituted from a heat conductor 121, a cooling device 127, and a sealed structure 129. The cooling device 127 can cooled a contact cooling section 131 to an extremely low temperature by utilizing electrical energy. The cooling device 127 is used to bring the collecting portion 113 to a first temperature at which the target gas to be analyzed is solidified, and to thereafter bring the collecting portion 113 to a second temperature at which only the target gas to be analyzed is gasified.

Abstract: An analysis apparatus (100) includes an image acquisition unit (110) and an analysis unit (120). The image acquisition unit (110) acquires image data of a microfossil in a sample collected from a stratum. The analysis unit (120) analyzes the image data acquired by the image acquisition unit (110) using a machine learning result to analyze a taxon or kind of the microfossil in the image data.

Abstract: A particle simulation device is a device that simulates behaviors of a particle and a structure. The particle simulation device includes: an initial structure information acquiring unit that acquires information indicating an initial position and a shape of the structure; a virtual area setting unit that sets a plurality of virtual particles in a vicinity of the surface of the structure based on the information and calculates a distance to the structure for each of the plurality of virtual particles; a virtual area specifying unit that specifies one virtual particle within a preset distance from the position of the particle; a particle distance calculating unit that calculates a distance from the particle to the structure based on the distance calculated for the specified virtual particle; and an interaction force calculating unit that calculates an interaction force between the particle and the structure based on the calculated distance.

Abstract: A radical polymerization method that enables synthesis, at a high conversion rate, of polymers having a relatively uniform molecular weight and is applicable to various monomers, and an apparatus used for the method. A reaction solution containing monomer and initiator is continuously or intermittently circulated in the apparatus and is heated in a heating-initiation unit to a predetermined temperature simultaneously across a radial direction of a cross section of the flow path whereby the initiator located in a particular volume of the reaction solution is cleaved all at once. The apparatus includes a heating medium production unit 10, a heating medium-reaction solution mixing unit 20, a cooling unit 30, and a recovery unit 40 for a reaction mixture, all communicatively connected by the flow path and optionally a heating reaction unit 60, a cooling unit 70, and a recovery unit 80, all communicatively connected by the flow path.

Abstract: An image processing apparatus comprising: a storage device storing weather data representing a state of an atmospheric air in at least one of a plurality of areas existing within a predetermined range; and a control device computing a color of a cloud about at least one area by using the weather data.

Abstract: A particle simulation device comprises: a position information acquisition unit that acquires position information for the particles; a pair setting unit that selects pairs of particles and sets a pair number, on the basis of the position information; a reference information generation unit that generates a matrix from the pair numbers and the particle numbers, and generates reference information for referencing the pair numbers from the particle numbers on the basis of a matrix in which the order of the rows of the matrix are sorted on the basis of the particle numbers; a sum calculation unit that calculates a sum of interaction forces for each particle on the basis of the reference information; and a particle information calculation unit that calculates the position and velocity of the particles on the basis of the sum of interaction forces.

Abstract: A transmission device of a submarine resource exploration system includes a transmission unit which transmits a predetermined transmission artificial signal transmitted in order to perform exploration of submarine resources in water using water as a medium. A reception device includes a reception unit which receives a composite signal of a received artificial signal representing a signal propagated to the reception device using water as a medium in the transmission artificial signal, and a self-potential propagated to the reception device using water as a medium due to a potential anomaly generated due to submarine resources. A signal processing device includes a signal processing unit which separates the composite signal into the received artificial signal and the self-potential.

Abstract: The disclosed invention is device for preparation of an emulsion and a method for producing an emulsion. The method comprises the steps of: (1) causing water and a water-insoluble substance that is to be emulsified to become freely miscible under conditions of temperature and pressure in the vicinity of the vapor-liquid critical point of water; and (2) cooling the product comprised of the water-insoluble substance and water solved each other in the presence of a surfactant to obtain a liquid comprised of the water-insoluble substance dispersed in water or a liquid comprised of water dispersed in the water-insoluble substance. The present invention provides a new device and a new method for producing emulsions with high efficiency without requiring a long period of processing or a great amount of energy.

Abstract: The purpose of the present invention is to provide a method for allowing both sequencing and quantification of a target nucleic acid without performing a ligation reaction and while solving a problem which arises due to PCR amplification efficiency.