Tohoku Techno Arch Co., Ltd. List of Products and Services

In 3D imaging, it is important to effectively encode z information, which is the image formation displacement of the target object, into XY information, which is displacement from the optical axis of the image surface. On the other hand, in single-pixel imaging using only a single detector, it is important to encode in efficient manner the XY information of the target into the time information. However, the conventional encoding method has a limit on distance resolution, imaging distance range, z information decoding accuracy and encryption uniqueness. This invention provides a new and improved hologram optical element, its manufacturing method and an optical device able to mutually convert Z & XY information with simple configuration. This invention is able to realize high accuracy and high spatial resolution for high-speed 3D imaging (patent US10816474) by converting the object depth direction information of the optical detection system into the planar direction information at the detecting surface.

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In cryptocurrencies such as Bitcoin, the user's offline privacy, which is linked to user ID (public-key), may be leaked by the frequent trading, because all transactions are fully disclosed on the blockchain. This invention provides a new technology for secretly exchanging depleted user IDs whose anonymity has declined with fresh ones through collaboration among other users (support users). Compared with current technologies, it has a resistance to the support users betray without any special changing of the blockchain mechanism. Amazingly, not only user's anonymity can be ensured, but also the transparency and versatility of services including the blockchain will be retained.

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Although the development of erythropoietin (Epo) -related drugs requires the existence of animal models for disease states such as renal anemia, Epo knockout mice are not suitable as a model because of the embryonic lethality and the large inter-experiment/inter-individual differences in the anemia state in the models produced by surgery/drug treatment. The present invention relates to transgenic mice (I-SAM) that have overcome these problems.　 　In I-SAM, the endogenous Epo gene is homologically knocked out by insertion of the GFP gene, and a region from 3.3kbp upstream to 4.5kbp downstream of the Epo gene transcription start point (Transgene) is introduced. In I-SAM before birth, transgene-derived Epo is expressed in the liver, etc., and there is no embryonic lethality. After birth, transgene does not express Epo because it has no transcriptional activity in the major Epo-producing tissues, such as the kidney, and there is anemia. 　 I-SAM has the following characteristics. ・Epo knockout but not embryonic lethality ・Stably develop high levels of anemia after birth ・Have normal renal function ・Have tissue Epo-producing cells labeled with GFP ・Have a long lifespan and can reproduce by mating

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　Materials containing nanocellulose are known to have higher strength than the base material. However, the nanocellulose properties vary depending on the degree of its aggregation. The light scattering is known as a method to estimate the aggregation. However, when the scattered light from the molecular chain is weak, as in the case of materials containing nanocellulose, it is not possible to estimate the aggregation with high accuracy from this method.　 　This invention is able to provide a device and method that estimates the aggregation with high accuracy, and its material manufacturing method. This invention can estimate the aggregation for not only nanocellulose but also multiple molecular chains with structures containing water molecules. This invention is based on the feature that there is a strong correlation between the aggregation and the electromagnetic wave propagation property in order to have high accuracy estimation.

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Development of thermoelectric materials and modules are promoted to effect ively ut ilize unused thermal energy. Thermoelectric materials with nanoparticles have been developed to improve the figure of merit by lowering the thermal conductivity using phonon scattering. However, it is limited to a material in which nanoparticles can be formed, and the dispersion of nanoparticles requires a search for precise conditions and a complicated process. It is an object of the present invention to provide a thermoelectric material and a thermoelectric module having an improved figure of merit, which do not require a process for producing a raw material of nanoparticles, can reduce thermal conductivity by scattering of phonons, can improve electrical conductivity and Seebeck coefficient by quantum confinement effect, and can be expected to be put into practical use.

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Since a flexible and soft magnetostrictive material does not exist,a soft magnetostrictive composite has been developed by mixing magnetostrictive material with resin. Wire and thin sheet from iron-based magnetostrictive alloy have also been developed as filler embedded in the matrix. However, although these magnetostrictive composite materials are soft, strong processing causes modification in the internal crystal orientation and generates internal defect, resulting in a significant reduction in magnetostrictive properties. In addition, since the filler material consisting of magnetostrictive material of predetermined dimension is embedded into the matrix, the composite material becomes a bit hard. 　This invention is able to provide a magnetostrictive composite material which is relatively soft with excellent magnetostrictive properties, and its manufacturing method. This invention consists of an iron based magnetostrictive alloy which is characterized by a large number of wire shape having a predetermined range of diameter and length dispersed in a resin matrix which has excellent flexibility and softness. It also has an excellent magnetostrictive properties since the strong processing has only a limited impact on magnetostrictive properties modification.

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With the increasing demand for highly efficient energy sources and the development of aerospace technologies, materials used in these fields must be able to withstand harsh environments. Among the materials expected in the aerospace field, TiB₂ is used as a heat-resistant and wear-resistant material because of its high melting point and strength, as well as its high electrical conductivity, etc. However, TiB₂ is a hard-sintering material that requires high temperature and pressure for sintering, which limits its domain of usage. 　The sintering technology of this invention has an effect similar to the original properties of transition metal boride even with the addition of auxiliary agents. This result expands the possibilities of using transition metal diborides as structural components, which have been limited to powder and thin film applications due to their difficult sintering properties.

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The rotary heat exchanger has a structure in which a fixed blade is in sliding contact with a rotary cylinder. Therefore, the temperature boundary layer (boundary film) of the heat transfer surface on the rotary cylinder is removed, and the fluid inside and outside the rotary cylinder can continuously exchange heat with high efficiency. In addition, even in the system where the solidification layer such as the scale is likely to occur (Hot spring water, polluted water, etc.), the solidification layer is always removed, and stable operation can be realized. In the conventional rotary heat exchanger, since only one side in the axial direction of the rotary cylinder is supported, there is a problem that the gap between the rotary cylinder and the fixed blade is likely to occur due to the run-out of the rotary cylinder, and the boundary film and solid phase are likely to remain. In addition, a rotary heat exchanger with both sides support has been devised, but the difficulty is that the rotating mechanism is immersed in the fluid, so it is unsuitable for the system with solid phase formation. In response to the above problems, the inventors have developed a mechanism (* (2)) in which the rotating mechanism on both sides touches only the clean fluid, and have created an invention that contributes to the practical application of the rotary heat exchanger such as a combination (* (1)) with a latent heat storage material.

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So far, crystalline carbon material with relatively large crystallite size and relatively small average interplanar spacing has been used as anode material for lithium-ion secondary battery and catalyst material for cathode in fuel cell. This highly crystalline carbon material is made from raw materials such as hyper-eutectoid molten pig iron, natural graphite and kish graphite. However, these raw materials are depletable resources and could be depleted in the future.　 　This invention is able to provide a highly crystalline carbon production method, its precursor production method and the precursor itself, using sustainable resources as raw material. This invention has a precursor production process in which at least one of iron, nickel or cobalt is impregnated into the raw material containing biomass which is a sustainable resource, followed by heat treatment to obtain a precursor, and a carbonization process in which the precursor is carbonized by heating and then washed by acid. This invention allows the production of highly crystalline carbon and its precursor.

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In recent years, the development of rechargeable battery using organic material has been promoted due to environmental impact and safety. For such device, activated carbon and hard carbon having a large specific surface area and high conductivity, are used as electrode material. However, activated carbon has a relatively low conductivity although its large specific surface area. Moreover, since it is manufactured using petroleum coke, it has an important environmental impact. In addition, hard carbon is manufactured only from specific tree species, making it expensive to obtain.　 　This invention is able to provide a conductive material that can reduce manufacturing cost, a porous material having a good balance between large specific surface area and high conductivity, and their manufacturing method, as well as an electrode material and an electrical storage device using these conductive material or porous material. The conductive material consists of hard carbon derived from charcoal. The raw material can be made from easily available tree species, thus reducing production cost. Like hard carbon, this invention has graphite-structured nanodomain, so it has a large specific surface area and high electrical conductivity.

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The efficient use of thermal energy has become important to realize a sustainable energy recycling society. So, there is a demand for the development of thermoelectric materials.　 　This technology relates to novel thermoelectric materials using the anomalous Nernst effect. Conventional thermoelectric transducers employ complex three-dimensional structures to achieve high thermoelectric power. On the other hand, the anomalous Nernst effect makes it possible to design a variety of thermoelectric devices. Therefore, we investigated the anomalous Nernst effect of a versatile amorphous alloy thin film made mainly of Fe and Sn, which are inexpensive and have excellent environmental harmony, and found that it has the largest class of performance at room temperature.

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　Magnetic field sensors are used in a variety of applications such as contactless current detection and electronic compasses, etc. Because an ordinary magnetic element detects only magnetic field components in a specific direction, detecting the direction of a magnetic field vector in 3D space requires a 3D combination of elements corresponding to each direction. This is an issue to device miniaturization and integration, which are rapidly increasing in demand in the IoT field.　 　This technology relates to the invention of a planar magnetic field sensor that does not require a 3D structure. The direction of the magnetic field vector in 3D space is determined from the voltage generated in each part of the ferromagnetic Fe-Sn thin films[1]. A 3D magnetic field sensor can be fabricated by patterning a single magneto-sensitive layer by a general-purpose device processing method. In addition to magnetic field sensors, this thin film can be expected to create new applications by combining functions[2-5].

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Lithium-ion battery is used in laptop and digital camera because of its light weight and high capacity. The cathode material is said to be one of the most expensive material used in lithium-ion battery. LiCoO2 is commonly used as cathode material, which is not only expensive but also a rare metal with few reserve, and there is concern about its stable supply. Therefore, the development of new electrode material that is low cost and that can be stably supplied from a resource is actively pursued.　 　This invention is about a new cathode material that is low cost and that can be stably supplied from a resource. The organic active material doesn't contain Ni or Co. Nevertheless the capacity of the new cathode material is over 180 (mAh/g), which is equal to or higher than that of the conventional cathode material. Moreover, this material has the property of being resistant to deterioration due to charging and discharging.

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The applicability of quinone compound for both cathode and anode has been considered, aiming for low cost and safe energy storage material that does not contain rare or toxic element. However, even if quinone compound is supported on a porous material such as activated carbon, the quinone compound leaches out from the porous material, resulting in a short life span (that is to say poor cycle life) as an energy storage material.　 　This invention solves the issue of cycle life. Consequently, we have demonstrated that the energy density of the new power storage device reaches the same level as a lead battery even though it is composed only of organic material.

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This invention is about a non-contact & non-destructive inspection method for evaluating the degradation with the age of thermal barrier coating on heat resistant metallic material by using microwave. The formation and growth of thermally grown oxide (TGO) which is formed as a result of aging, is evaluated for ceramic coated element used in gas turbine thermal power generation, and the interfacial strength is indirectly evaluated. YSZ (top coat) is used in ceramic coating for gas turbine element, and MCrAlY alloy layer (bond coat) is inserted between the YSZ and the substrate (Ni-based superalloy) to increase delamination resistance. This element is known to form TGO on the bond coat as the material deteriorates, so the element life evaluation is possible by evaluating TGO.

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CVD and electrochemical method are known to product carbon material such as carbon nanotubes or graphenes. In the CVD process, carbon material is produced at high temperature in order to decompose the precursor molecule that provides the carbon. The hydrothermal electrochemical method can produce carbon material at lower temperature than CVD method. However, the amount of carbon material produced by this method is small.　 　This invention is to enable to produce large amount of carbon material at relatively low temperature. In this production method, carbon material is produced from aqueous solution in which the temperature is 100℃ or higher, the pressure is greater than 1 atm, and soluble carbonaceous precursors by a hydrothermal electrochemical method. The produced carbon material can be composed of at least one of diamond like carbon, carbon nanotube, graphene, diamond. This invention is to enable to produce large amount of carbon material at relatively low temperature.

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Hydrogen is attracting attention as a sustainable energy source, but all current hydrogen generation methods, such as water electrolysis or steam reforming of fossil fuel, have an important environmental impact. The "hydrolysis" which generates hydrogen by reacting metallic material with water, is attracting attention as a hydrogen generation method with a small environmental impact. The advantage of the hydrolysis is that it does not generate oxygen but only hydrogen, so the oxygen separation process is not necessary and there is no risk of explosion. 　Hydrogen generating materials consisting of Mg or Mg alloy have been reported as material for hydrolysis, but the phase which does not react with water such as Mg(OH)2 is formed and the reaction stops in the middle of the reaction process. Therefore, most of the previously reported hydrogen generating materials have a small hydrogen generation per unit weight. 　This invention is about the hydrogen generating alloy that does not stop reaction even inside neutral aqueous solution. This alloy generates a large amount of hydrogen per unit weight because it reacts with water until the end without stopping the reaction in the middle. Moreover, the alloy is composed only of Mg and Ca elements, which are present in large quantity on Earth and are not toxic to the ecosystem. There are very few hydrogen generating materials that do not generate heavy metal ions through hydrolysis, and this alloy has potential to use in any location.

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　As a method for recovering valuable metals from spent LIB cathode materials, a wet scouring method is mainly used in which various metals are separated using a back extraction method using an organic solvent after leaching metal components using an acid. However, sulfuric acid and nitric acid, which are used as acids, cause a large environmental load because toxic gases are generated, and hydrogen peroxide, which is used as a reducing agent, has problems such as explosiveness and carcinogenicity. In a system without adding hydrogen peroxide, the recovery rate of metal ions decreases, so that improvement of the process is required.　 　In order to solve the above problems, the inventors focused on a hydrothermal reaction and examined reaction conditions such as the type of acid. As a result, they succeeded in almost completely leaching metals without using strong acids and reducing agents by using organic acids such as citric acid and the amino acid glycine. The effects of continuous operation, shortening of reaction time, and avoiding corrosion of equipment can be expected by the present invention.　

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　With the increasing demand for highly efficient energy sources and technological developments in the aerospace sector, materials used in these fields are required to be usable in multi-extreme condition. Among promising materials in the aerospace field, TiB2 is used as a heat-resistant and wear-resistant material due to its high melting point, mechanical strength and high conductivity. However, it is known that the mechanical strength of TiB2 deteriorates due to the oxidation of the material in a high temperature environment, which limits its industrial application.　 　The present invention demonstrates the potential of transition metal boride as a structural material in a high-temperature environment without compromising its inherent properties by adding a twist to the sintering process. This is a result of expanding the potential of transition metal borides as structural members, which are limited to powder and thin film applications due to their poor sinterability.

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　MR-Linac, which combines MR device that uses magnetic field and radiotherapy device (Linac), has begun to develop as a new treatment device for radiotherapy. On the other hand, since the therapeutic radiation is bent by the magnetic field emitted from the device, it is necessary to create a treatment plan based on the dose distribution in order to take into account magnetic field influence, but existing methods require time-consuming.　 　In general, calculation algorithm such as convolution / superposition is quick (about 1-2 minutes), but it cannot take into account magnetic field influence. On the other hand, high precision algorithm such as the Monte Calro Algorithm can take into account magnetic field influence, but the calculation is slow (about 10 to 20 minutes). 　This invention solves above issue by using deep learning technology to perform dose calculation. Currently, there is no accurate and quick dose calculation algorithm under magnetic field, so this invention is essential for MRI guided radiotherapy.

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In recent years, power generation element that converts mechanical energy into electrical energy, such as vibration, has been attracting attention. For example, piezoelectric and magnetostrictive materials are known to convert mechanical energy into electrical energy. However, mechanical energy such as vibration has not been fully used so far. Therefore, there is a need for power generation element that can convert mechanical energy into electrical energy more efficiently.　 　This invention is able to provide a high power generating element and a piezoelectric-magnetostrictive composite to use for this device. This invention laminates a magnetostrictive film and a piezoelectric film and forms a microscopic irregularity at the interface between them. This configuration increases the frequency of contact between the 2 materials at the microscopic interface area, causing electromagnetic physical interaction between magnetostrictive film and piezoelectric film, which improves the power generation element's output characteristics. This allows mechanical energy to convert efficiently into electrical energy.

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CeO2-ZrO2 composite oxide with excellent oxygen storage capacity (OSC) has been used as an atmosphere control material for ternary catalysts used to purify exhaust gas from automobiles. Among CeO2-ZrO2 composite oxides, κ phase (cubic pyrochlore like structure) is known to exhibit the highest OSC. However, due to the high temperature required for the synthesis process of κ phase, the specific surface area is significantly reduced and practical application of κ phase is difficult.　 In the present invention, it has become possible to provide an atmosphere-controlling material consisting of an oxide containing κ phase, in which the decrease in the specific surface area is greatly suppressed by the synthesis process at a lower temperature than in the conventional process. The low temperature is realized by adding Fe oxide during the synthesis of the complex oxide. The material by this synthesis process shows a clear XRD pattern assigned to the κ phase and has a specific surface area of 3 m2/g or more. This shows the possibility of practical application of the κ phase, and it can be said that the technology is expected to improve the purification ability of exhaust gas.

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Compared with semi-solid diecast products, the ones produced by conventional diecast methods not only arise rougher surface, but also trend to fail to fill up the end surface with thickness of 0.1mm. So far, semi-solid diecast method cannot be simply applied to conventional apparatus, and thus increased cost turns to be a problem in industry. 　This invention solves such a problem by optimization of proportion of solid phase, sleeve factor, and nucleation temperature for conventional apparatus. Semi-solid slurry can be generated in the sleeves of conventional apparatus, and notably, the thin surface fill-up result shows satisfied roughness and dimensional accuracy. [Substance] patent has been issued.

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Point cloud data obtained from UAV photogrammetry is processed to create orthomosaic image, bird's eye view and 3D model, in order to understand the topography. However, in curvilinear topography such as river, road, waterway and coastline, it is difficult to grasp the whole picture of the curvilinear topography and its surrounding areas because these models are displayed in curvilinear form as they are. 　This technology provides a method and a program that can easily grasp curved topography visually. It has concretely the following features. 　◆Automatic extraction of cross-sections from 3D point cloud 　◆Easy viewing of the entire image by linear arrangement of curved topography 　◆Able to compare topography changes over multiple time period 　◆Obtain elevation of cross-sectional and longitudinal sections of the target topography 　◆Display seasonal changes of the surrounding environment (vegetation, etc.)

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Currently, research and development are being conducted on information processing device that reads information indicated by markers on the image taken by a moving object such as robot, and that controls the moving object. More the complexity of mobile object movement increases, more the information quantity to be read from the markers becomes important. When there are huge information, the information of each marker is read by the information processing device, but the marker number increases as the information increases. As a result, the information processing device is unable to operate the moving object with accuracy.　 　This invention is able to provide marker, information processing device and program that can accurately detect more information from the captured images in which markers are captured, while avoiding the increase of marker number. This invention has 1st marker indicating the 1st information and 2nd marker indicating the 2nd information that are superimposed on the marker, which reflect electromagnetic wave of each wavelength band and indicate the information by different encoding. This allows more information to be detected with accuracy from the captured image, while avoiding the increase of marker number.

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　Currently, satellite positioning method using signal emitted from satellite is known to determine the location of an object. Construction equipment such as backhoe and dump truck changes its position and posture. For example, a dump truck changes its posture with the angle of his cargo bed change. As a result, construction equipment with such changing position and posture may not be able to continue the position determination process.　 　This invention is able to continue the process of determining one object's position even if this object changes its posture. In determining the position of an object using signal emitted from satellite, the invention determines the position of the object without using signal emitted from invisible satellite that may not be able to receive direct waves when the object's posture changes. This improves the accuracy of position information even when one object's posture changes.

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Cylindrical rock sample (rock core) taken from a well is analyzed for underground resources exploitation. Analysis of rock core can be used to estimate subsurface material and to measure physical property of formation in a simple way at low cost. Moreover, if the orientation of rock core at in-situ status is known, it is expected to estimate information on the formation, such as the direction of crustal stress, the anisotropy of permeability and the direction of subsurface fault.　 　There is a conventional method to orientate rock core by tracing the borehole image taken by logging and matching it with the surface image of the rock core. This method takes a long time and leads to a subjective conclusion since the orientation is determined visually. 　This invention is about a method to orientate rock core by image analysis, which enables orientation in a shorter time with an objective process than conventional method.

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　Toxin adsorbents such as SGLT2 inhibitors and cremedin have been used as pharmacotherapy for kidney disease. Lubiprostone, which is also used as a constipation drug, was shown to be effective as a treatment for chronic kidney disease (CKD). Lubiprostone was also found to suppress the decline in renal function. In an investigator-initiated clinical trial, the inventors conducted an exploratory study to investigate the efficacy and safety of 8 μg/day and 16 μg/day of lubiprostone in reducing renal function in patients with chronic kidney disease, using a placebo control. (The results can be disclosed under individual contracts.)

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Nondestructive evaluation (NDE) of cracks, delamination, and kissing bonds is important for safely managing and operating structures and components. Ultrasonic NDE is widely used, and ultrasonic phased array has become one of the primary methods for imaging internal defects. However, there are problems regarding measurement errors of closed defects, such as closed cracks, and discrimination of cracks against other defects and geometric changes.　 With the present invention, it has become possible to provide an imaging apparatus capable of detecting defects represented by closed cracks with high accuracy and high discrimination. Further application of the apparatus can be expected to detect bubbles and lesions contained in tissues. In the present invention, by utilizing the incident-wave-amplitude dependence of the fundamental scattered waves, the closed cracks can be visualized with a higher signal-to-noise ratio than the existing technology.

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　Scintillators are used for detectors of X-ray, γ-ray, α-ray, β-ray, and neutron. In particular, high-density scintillator crystals have characteristics such as a) high radiation blocking ability, b) high effective atomic number, and c) high density. Although PbWO4 single crystal is widely used in existing high density scintillator materials, new scintillator materials are required for further improvement of detector performance and environmentally friendly lead-free scintillator materials.　 　The present invention makes it possible to provide new materials beyond existing scintillator materials as a result of utilizing the excellent crystal growth technology possessed by the inventors. Generally, high-density scintillator materials are known to have high melting points, but the difficulty of crystal growth overcame to complete the present invention (an example is shown on the right). At present, a large-diameter technology is being developed for mass-production of the crystal.

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　In a factory for example, the end of a wired network is an access point such as a wireless LAN. The connection to the object beyond that point is made by a wireless communication system. Therefore, the wireless IoT communication is important for network connection to object. Wireless IoT communication often uses wireless LAN, Bluetooth, etc., which are unlicensed band, causing interference between systems, resulting in throughput reduction or real-time performance lack.　 　This invention is able to suppress inter-system interference using adjacent same frequency bands and to improve space usage efficiency. This communication circuit is equipped with an access point for wireless communication with a plurality of sensor nodes. 　This invention measures the rotation period and direction of sensor nodes, controls the direction of the beam sent out from each access point, and communicates to sensor nodes available in the communication range. It suppresses inter-system interference using adjacent same frequency bands and improves space usage efficiency.

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　The present invention relates to a thallium halide radiation detector such as thallium bromide (TlBr) used in a positron tomography imaging diagnostic apparatus (PET), a single-photon radiation computed tomography apparatus (SPECT), and the like, and to PET or SPECT equipped therewith.　 　On the background of PET, a radiation detector using a CdTe crystal is used for a high-performance type detector, but it has a problem that it is a covalent crystal, has a high melting point, and is expensive to fabricate. For example, the price of only a crystal per device is expensive at several hundred million yen. Therefore, thallium halide such as TlBr, which is inexpensive, has attracted attention as an alternative material to CdTe. 　According to the present invention, since conduction ions in thallium halide crystals such as TlBr do not cause polarization phenomena in the detector, an inexpensive thallium halide radiation detector with a long lifetime can be obtained. In addition, the present invention is applicable to general radiation detectors, not limited to PET.

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TMR element showing the tunnel magnetoresistance (TMR) effect, has been applied to products such as magnetic sensor, non-volatile memory, etc. The TMR ratio, which represents the variation ratio of element resistance, is one of the element performance indicator and it is an important characteristic that influences the specification of the applied product. TMR element using amorphous FeCoB magnetic alloy and MgO tunnel barrier is currently the main material and can be fabricated by sputtering method which is suitable for mass production. This is an excellent material which becomes FeCo/MgO crystal when B is diffused by heat-treating the element and shows 200-600% TMR ratio. However, heat treatment with B diffusion could be a factor in reducing the functionality of other layers adjacent to FeCo. This invention provides a technology for Co-based magnetic irregular alloy showing TMR ratio comparable to FeCoB by low temperature heat treatment, even without the addition of B.

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Various magnetic sensors such as the Hall sensor, are widely used for the realization of an advanced IoT society. In particular, magnetic sensors based on the tunnel magnetoresistance effect (TMR sensor) discovered at Tohoku University has made dramatic progress in increasing sensitivity, making it possible to detect a weak magnetic field such as bio-magnetic field. 　However, the conventional TMR sensor did not achieve both high sensitivity and accuracy. 　This invention is able to provide a TMR sensor with extremely high linearity output which is necessary to achieve high sensitivity and accuracy, by controlling the higher-order magnetic anisotropy of the used ferromagnetic material.

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Metal and ceramic repel each other when mixing due to their positive surface charge. So since they are dispersed away, the composite can not be formed. The conventional technology uses a binder composed mainly of polyvinyl alcohol to glue metal and ceramic. This is then sintered in order to make a composite powder. 　However, the binder reduces the functionality due to compositional change (specifically, mechanical property deterioration, optical absorbance decrease, etc.) and handling during production is difficult. 　This invention is able to easily make ceramic / metal composite by using carbon nanotube (CNT). Application of various powder to bulk material is expected, such as sintered material and composite material by 3D printer. It is also possible to create a pure composite of metal / CNT, and this technology is expected to improve the antioxidation property of the base metal material.

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With the increase of request for device miniaturization and thin crystal film quality improvement, the ion damage on substrate has become a major issue in sputtering. The magnetron sputtering method is widely used but since the plasma is formed directly between the target material and the substrate, “1 it is difficult to avoid ion damage”. This issue is amplified when generating highdensity plasma. In addition, since a single power supply is responsible for both the plasma generation and ion attraction, “2 it is impossible to independently control the ion flux and energy flowing into the target material”. Moreover, since the plasma is confined by the magnetic leakage flux on the target surface, “3 it is difficult to use for ferromagnetic material target”. 　This invention solves above 1/2/3 issues by generating highdensity plasma with helicon discharge and by controlling the plasma shape with a curved magnetic field, etc. This invention could also be considered to be used as a heating mechanism of the target material, or as an uniform & fast film deposition.

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Actually, the waste heat below 200℃ emitted by electronic device, etc., is difficult to control and therefore, it is not effectively reused. This heat reduces performance and lifespan of electronic device. A heat engine that uses MEMS to control the heat flow has been developed, but it requires a relatively large space to house the drive unit, making it difficult to integrate into small electronic device. 　This invention is able to provide nanosheet and nanosheet manufacturing method. This nanosheet can be easily integrated into small electronic device, etc. which can control heat flow. It has a copper oxide layer with Cu and O bonded in a chain forming a ladder pattern, and its thickness is less than 100 nm. Due to this thinness, the nanosheet can be easily integrated into electronic devices that are becoming smaller, and the thermal conductivity can be controlled easily.

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This invention realizes a P2P-type cloud storage mechanism based on the secret sharing method. Impossible to identify the saving destination Data is splited and stored in participating nodes. In addition, node-to-node communication is anonymous, making it secure and difficult to identify the storage location. The client doesn’t need to retain metadata Reduce the risk of metadata leak by decentralizing its storage in addition to the secret data itself by using the blockchain. Possible to retrieve data securely Secret data can be retrieved using user name and password. It can detect and eliminate brute force attack on username and password by mutual monitoring and majority voting among P2P nodes.

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　When unsaturated fatty acid contained in abundance in rice oil and linseed oil, which are expected to have preventive effect against lifestyle-related diseases, is oxidized, it exhibits unpleasant odor and toxicity derived from peroxide and aldehyde. On the other hand, it has been reported that spermine, a polyamine compound, synergistically inhibits oxidation with vitamin E which is widely used as an antioxidant. However, polyamine compound has a characteristic odor and it is relatively expensive, so it is difficult to apply for a general usage. The inventors have found that polyethylenimine (PEI) can be used as an antioxidant with advantage over polyamine compound in term of odor, cost, and oxidation suppression ability. [Effect] 　- Increase oxidation inhibition by vitamin E 　- Synergistic antioxidant effect can be obtained for omega-3 oil, which does not well inhibit oxidation by vitamin E 　- Since PEI is insoluble in oil and highly viscous, it can be used for direct coating on oil storage container to obtain its oxidation supression effect.

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Dihydrofolate reductase (DHFR) is known as a target of the anticancer drug MTX, and research tools (kits for evaluating protein subcellular localization, etc.) utilizing the binding between Escherichia coli DHFR (eDHFR) and MTX or its analogues have been reported and sold. The inventors developed azoMTX, in which an azo group is introduced into MTX, and found that the binding to eDHFR by light irradiation can be regulated. They also found that the kinetics of eDHFR fusion protein expressed in cells can be manipulated by light using azoMTX derivatives. 【effect】 ・The structure of azoMTX is reversibly changed by light irradiation of a specific wavelength. The cis of azoMTX produced under UV irradiation strongly bound to eDHFR and inhibited its enzymatic activity, while the trans of azoMTX produced under visible light irradiation decreased the binding strength to eDHFR and the enzymatic reaction proceeded. ・The target protein was expressed as a fusion protein with eDHFR, and intracellular kinetics (localization) could be reversibly photomanipulated using an azoMTX derivative.

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Conventional manganese-silicide-based thermoelectric material MnSix has excellent thermoelectric property and thermal shock resistance. For example, the output factor S2σ (where S is the Seebeck coefficient and σ is the electrical conductivity), which is one of the thermoelectric property, is maximum 2.22 mW/K2m at 500C. 　However, MnSi (manganese monosilicide) is deposited in the layers in MnSix c-axis direction with a period of several tens microns, which causes a decrease of the figure of merit Z (output factor S2σ divided by thermal conductivity κ) of the material. 　This invention limits the MnSi layer deposition and provides a thermoelectric material with an excellent thermoelectric property and its manufacturing method.

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Liquefaction is a phenomenon where the ground becomes in liquid form and looses suddenly its resistance. It occurs when vibrations from earthquake or construction are applied to soft ground containing lot of sand and having high groundwater level. It causes significant damage to structures located on the ground surface or underground. 　Therefore, the practical application of technology to assess the liquefaction level is required. 　There are conventional methods to assess liquefaction risk using AI, but they all require ground data. However, although those ground data can be collected by boring, method for Swedish weight sounding test or surface wave survey, these operations require huge resources. 　This invention can assess the liquefaction risk level without requiring the work of collecting ground data.

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　The mechanism that switches between a flexible state, which can be easily deformed when applying external force, and a high stiff state, which can transmit force to the outside when contact is made, has been studied in the past. A gripper that grasps an object using this mechanism has also been proposed. There are a wide variety of grippers, some consisting of a plurality of connecting parts arranged in a row connected to each other with a rotation flexibility, and others consisting of beads arranged in a row through a wire. However, increasing its length results to the loss of friction force, so it is not possible to achieve a high stiff state and to change the shape by itself. 　This invention overcomes these issues, and provides a variable stiffness connecting body that can change its own shape and maintain a high stiff state with a relatively small force. This invention has pulleys on multiple connecting parts that are connected in a row. Each pulley has a string for rotation and is configured to allow switching between fixed and rotational states of the connecting parts. This invention can reduce the force required to keep the connecting body in a fixed and high stiff state, thus allowing to keep grasping the object with a relatively small force.

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This invention related to a FM gyro sensor.　 　Conventional FM gyro has technical issue that accuracy is affected by temperature fluctuation. This is because it needs 2 different oscillators, thus, temperature different, manufacturing irregularity exists in between these two oscillators. 　This invention hires single oscillator and different oscillation mode are excited to it. 　By above mentioned method, high independency from temperature effect has been achieved. 　In addition to it, thanks to its unique method, this gyro sensor can be used as magnetic sensor, pressure sensor and so on. 　Various patent has been applied/granted and mature patent portfolio has been developed.

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Although the Q factors of the 2D oscillator used in gyroscope must be matched in the x and y axial directions, they may differ slightly due to manufacturing error, etc. Thus, Q factor in each x and y axial direction needs to be matched independently. In a oscillator, vibration generates heat flow which affects the Q factor (thermoelastic loss). Therefore, it is possible to adjust the Q factor by adding a heat flow path in the structure or by blocking the heat flow. The 2D oscillator of this invention has a pre-fabricated machinable part to control the heat flow without changing significantly the stiffness, in addition to its basic structure. The Q factors in the 1st and 2nd modes, which are orthogonal to each other, can be controlled independently by cutting this machinable part appropriately.

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