"D" Keywords - 75 Result(s)
D
[Damage Concentration]
Proposal of New Column Support System for Multi-Story Steel Moment Resisting Structures to Perform Beam Yielding MechanismFeaturesFor the moment resisting frames with fixed column bases, the soft story mechanism may occur during earthquake due to become plastic hinges at the bottom part of columns. This paper proposes the new support system on the first story whose columns consist of the reinforced concrete downside column and the steel topside column, and their joints with the anchor bolts and the shear plates are supposed to be pinned. It is possible for the frames with this support system to uniform the magnitude of the bending moment at column top and base, and to perform beam yielding mechanism for 6 and 9 story frames with 2.1 of the column-to-beam full plastic moment ratio. Targeted Application(s)/IndustryIn this column support system, the 1st story column consists of steel topside column and reinforced concrete downside column, whose connection at the midstory performs as a pin. New Industry Creation Hatchery Center
KIMURA Yoshihiro, Professor
Doctor of Engineering
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[damage-free nanofabrication]
Development of Innovative Green Nanodevices Using Damage-Free ProcessesFeaturesWe developed an entirely new concept of "bio-template ultimate process technology" and realized fabrication of uniform, size-controllable, defect-free, high-density and regularly-distributed quantum dot array on surface of arbitrary material. The quantum dot array can be applied to high efficiency and inexpensive quantum dot solar cells, high luminescence quantum dot lasers, high-speed graphene / germanium transistors, and so on, i.e., energy-generating, energy-storing, and low-energy-consumption devices. Targeted Application(s)/IndustryWe can accept collaborative researches on nanodevices such as quantum dot solar cells or lasers, low-energy-consumption devices such as graphene transistor and germanium transistor, and fundamental technologies such as plasma/beam processes, thin film deposition, doping, and surface treatment. Green Nanotechnology Laboratory, Innovative Energy Research Center, Institute of Fluid Science
SAMUKAWA Seiji, Professor
Doctor of Engineering
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[Data Analytics]
Data Analytics for Creation of Social ValuesFeaturesMy research field is a data analytics for creation of social values by data science approaches. In modern society, we can observe various data sets about our daily life, business or community. I aim to create new services for it using such data set and methods of Bayesian modeling, data mining or machine learning. Targeted Application(s)/IndustryGraduate School of Economics and Management
ISHIGAKI Tsukasa, Associate Professor
Doctor of Philosophy
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[Data Science]
Data Analytics for Creation of Social ValuesFeaturesMy research field is a data analytics for creation of social values by data science approaches. In modern society, we can observe various data sets about our daily life, business or community. I aim to create new services for it using such data set and methods of Bayesian modeling, data mining or machine learning. Targeted Application(s)/IndustryGraduate School of Economics and Management
ISHIGAKI Tsukasa, Associate Professor
Doctor of Philosophy
|
[database]
Brain Development and Aging Using Large Brain MRI DatabaseFeaturesWe have revealed relationships among brain structure, brain function, lifestyle, genetic factor, and cognitive function using brain magnetic resonance imaging (MRI) database. The goal of our project is to prevent several diseases and disorders such as dementia by performing personalized medicine using the large brain MRI database. Targeted Application(s)/IndustryOur research is related with several industrial fields such as food, sleep, and other lifestyle industries. In addition, our research is also related with medical field such as preventing medicine and brain check-up. |
[dealloying]
Development of Open Nanoporous Base and Half Metals, Metalloids and their AlloysFeaturesNanoporous metals have drawn considerable attention due to their highly functional properties. They are generally produced by selective dissolution of elements from a multicomponent alloy (known as the dealloying method). As this method is based on differences in the electrode potential of each element present in the alloy, and this potential is high for noble metals, porous structure can be obtained only for noble metals. Recently we have found a new, simple and easy dealloying method without using aqueous solution, which enable us to develop an open nanoporous non-oxidized metallic material even with base metals (such as Ti, Ni, Cr, Fe, Mo, etc), metalloids and their alloys. Targeted Application(s)/IndustryThis technique is very powerful for developing new functional electrodes, catalysts, filters as well for removing toxic metallic element from the surface of biomaterials containing the toxic element. |
[dedifferentiation]
Development of anti-fibrotic therapies with a cell line from myofibroblasts of fibrotic kidneysFeaturesThere are serious unmet medical needs in kidney diseases. Since fibrosis is a common terminal pathology of various kidney diseases and closely related to renal failure, anti-fibrotic therapies are plausible strategies for kidney diseases. Kidney fibrosis progresses with the emergence of myofibroblasts which produce extracellular matrix. We demonstrated that myofibroblasts originate from renal interstitial fibroblasts, which produce the erythroid growth factor erythropoietin, and that the transformation is reversible. To elucidate mechanisms of kidney fibrosis, we have established a cell line derived from myofibroblasts of mouse kidneys. It has been demonstrated that epigenetic interventions restore the cells (Replic cells) to their original fibroblastic features. Targeted Application(s)/IndustryReplic cells provide useful and precise strategies to identify anti-fibrotic drugs. |
[Deep depth]
Development of the method of Baby Borehole Hydraulic Fracturing, BABHYFeaturesFor the effective measurement of the reopening pressure in hydraulic fracturing, it is necessary to use the testing equipment with sufficiently small compliance. This limitation makes it difficult to apply the hydraulic fracturing for the measurement of the maximum stress, because the compliance of conventional equipments is generally so large. Taking account of this situation, we proposed a new concept which allows us to do the in-situ tests of hydraulic fracturing for stress measurement at so deep depths as more than 1 km. We call the concept the Baby Borehole Hydrofracturing, BABHY for short. In order to put the new concept into practice, we developed the BABHY sonde and finally we succeeded to carry out hydraulic fracturing test by using the tools in a vertical borehole of 811 m depth. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry. Large-Scale Environmental Fluid Dynamics Laboratory, Complex Flow Division, Institute of Fluid Science
ITO Takatoshi, Professor
Doctor of Engineering
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[deep learning]
Natural Language Processing for Semantic Analysis of Big DataFeaturesThis lab conducts fundamental research for deep natural language processing (NLP) and NLP-oriented information organization such as classification, extraction, and summarization of language information. Our activities also cover a broad range of applied research including NLP-based information and knowledge mining, information credibility analysis, and resilient ICT through the maximal use of Big Data. Targeted Application(s)/Industry(i) Analysis of market trend or research trend through intelligent text mining, (ii) Discovery of potential needs and risks from opinions in social media, (iii) Management of knowledge in a company by analyzing internal documents, etc. |
[Defect]
Analysis and Function Elucidation of Fine Clusters and Defects in Materials Invisible by Electron MicroscopyFeaturesIt is well known that nano-scale impurity/solute clusters, defects, defect clusters and their complexes affect the mechanical and electrical properties in materials. However, it is very difficult to observe these objects even by state-of-the-art electron microscopes. We overcome the difficulty by employing noble two techniques: laser three-dimensional atom probe (3D-AP) technique and positron annihilation spectroscopy (PAS). Laser 3D-AP can map out each atom in various materials (metals, semiconductors, insulators) in three-dimensional real space with nearly atomic scale resolution. PAS can detect vacancy-type defects and defect-impurity complexes very sensitively. Targeted Application(s)/IndustryBy combining these methods, we are going to reveal the functions of the fine impurity clusters and defects to the materials: developments of new nano-structured materials, the mechanism of degradation of aged structural materials, the fall in the yield of semiconductor device production, and developments of quantum devices etc. |
[Degradation]
Innovative Preparing and Thick Coating Technique without Heat Affected Zone and Phase TransformationFeaturesThe cold spray (CS) technique is known as a new technique not only for coating but also for thick depositions. It has many advantages, i.e. dense coating, high deposition rate, low oxidation, and no phase transformation. We have been carrying out establishment of innovative preparing and coating techniques using the CS, and maintenance of reliability and safety of the cold sprayed repairing parts and coatings. Moreover, in order to evaluate the compatibility between a substrate material and particles based on an adhesion mechanism and scientific basis, various adhesion conditions are examined a micro / nano-structure observation and a molecular simulation. Targeted Application(s)/IndustryOur targets were mainly hot section parts of thermal power plants and reactor piping and tubes etc. Recently, it is possible to make a ceramic coating. Therefore, we accelerate the evolution of the other fields including the creation of the functionality materials in near future. Fracture and Reliability Research Institute, Graduate School of Engineering
OGAWA Kazuhiro, Professor
Doctor of Engineering
|
[Delay Tolerant Network]
Message Transmission without Cellular Coverage, “Relay-by-Smartphone"FeaturesOur technology provides the necessary method for sending messages even when the physical infrastructure is not available. The technology utilizes common smartphone WiFi functionality to send message in a multi-hop fashion. Thus it is possible to send message to people further away. Our technology has been designed to be based on Delay-Tolerant Networks (DTN), but the technical key idea is the combination of DTN and Mobile Adhoc Network (MANET), which can improve the message delivery in an area with high population density or where mobility are fixed such as evacuation center. Targeted Application(s)/IndustryThis technology can be used to distribute information during emergency situation such as after disaster. In addition, it is possible to provide additional services such as advertisement within shopping areas, distribution of coupons, exchange of information within small group during public events or uses as transceiver during group hiking. There is also possibility of using this technology to provide communications service in developing nations. |
[delayed fracture]
Hydrogen embrittlement of high strength steelsFeaturesWe are studying hydrogen embrittlement property of high strength steels from the aspects of both the effect of hydrogen on mechanical properties of high strength steels and hydrogen uptake behavior in corrosive environments. The topics of our study includes clarification of mechanism of hydrogen embrittlement of various steels, investigation of hydrogen entry caused by corrosion using electrochemical techniques, hydrogen visualization, proposing evaluation methods for hydrogen embrittlement property and so forth. Targeted Application(s)/IndustryCollaborative research in the field of hydrogen embrittlement, for example, hydrogen embrittlement properties of high strength steels and the effects of metallographic structure and hydrogen traps, proposal of evaluation methods for hydrogen embrittlement property for some specific steel and for parts with specific shape, development of novel hydrogen visualization techniques. |
[DEM]
Powder Processing Contributing to the Global Environmental ProtectionFeaturesMaterial properties and characteristics of the product as a raw material powder are dependent on the particle packing structure as well as the chemical composition. Sophisticated control of the powder processing such as mixing and grinding is strongly required. In our laboratory, we are creating the simulation method as a tool for controlling the powder processing and optimizing the powder process for achieving a resource-saving and energy-saving by the computer simulation. Targeted Application(s)/IndustryWe are conducting research on analysis/optimization of powder processing such as grinding, mixing, and packing by using simulation, metal recycle from urban mine through active utilization of mechanochemical effect, and generation of energy from biomass. Institute of Multidisciplinary Research for Advanced Materials
KANO Junya, Professor
Doctor of Engineering
|
[demand analysis]
Advanced Analysis of Socio-Economical Data for Capturing Social NeedsFeaturesWe have proposed advanced methods of behavior analysis for public transport service. Targeted Application(s)/IndustryWe welcome cooperative research on demand analysis of public services, as well as needs analysis for new goods and services. International Research Institute of Disaster Science
OKUMURA Makoto, Professor
Doctor of Engineering
|
[Dementia]
Brain Development and Aging Using Large Brain MRI DatabaseFeaturesWe have revealed relationships among brain structure, brain function, lifestyle, genetic factor, and cognitive function using brain magnetic resonance imaging (MRI) database. The goal of our project is to prevent several diseases and disorders such as dementia by performing personalized medicine using the large brain MRI database. Targeted Application(s)/IndustryOur research is related with several industrial fields such as food, sleep, and other lifestyle industries. In addition, our research is also related with medical field such as preventing medicine and brain check-up. |
Brain Science-Based Preventive Care and Rehabilitation for Dementia in CommunitiesFeatures1. To produce the brain science-based evidence for dementia prevention using neuropsychological tests and neuroimaging methods (amyloid PET etc.) Targeted Application(s)/IndustryAn industry-academic cooperation is expected with insurance companies, industries for producing screening device, program for preventive care and rehabilitation. Division of Geriatric Behavioral Neurology, Cyclotron and Radioisotope Center
MEGURO Ken-ichi, Professor
MD, PhD
|
[Dental caries]
Oral Biofilm Functional Analysis: from “What Are They?" to “What Are They Doing?"FeaturesA large number of microorganisms inhabit the oral cavity, such as the teeth, gingiva and tongue, in the form of oral biofilm. The oral cavity forms an ecosystem where the host (humans) and parasites (microorganisms) coexist. Disruption of the balance of this oral ecosystem leads to dental caries, periodontal diseases and oral malodor, and even deterioration of dental materials. Targeted Application(s)/IndustryRisk assessment of oral biofilm-associated diseases, such as dental caries, periodontal disease, oral malodor and aspiration pneumonia Division of Oral Ecology and Biochemistry, Graduate School of Dentistry
TAKAHASHI Nobuhiro, Professor
DDS, PhD
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[dental magnetic attachment]
Development of the Nickel-Free Dental Magnetic Attachment Using the Magnetic Shielding Material which Lost its Magnetism by Nitrogen-Solid SolutionFeaturesIn the dental magnetic attachments which retain dentures, superstructures of dental implants, and so on, the non-magnetic stainless steel containing nickel is used in order to reinforce their retentive force by a magnetic circuit. The surface layer of magnetic stainless steel which loses its magnetism by nitrogen-solid solution obtained from heating in nitrogen gas at high temperature, enable to form a magnetic circuit, which does not contain nickel at all, and to reduce its components and manufacturing processes. The method using the nitrogen-solid solution in this study is warrantable to manufacture the nickel-free dental magnetic attachment with high safety. Targeted Application(s)/IndustryThe nickel-free magnetic attachment realizes a retainer with higher safety, and can expect the application to medical and dental care for clinical uses, such as not only a denture but a dental implant, an epithese, and so on with easy desorption. Division of Dental Biomaterials, Graduate School of Dentistry
TAKADA Yukyo, Associate Professor
Doctor of Engineering
|
[Dental occlusion]
High-Precision Capturing of 3-D Dental-Arch Shapes and Their Occlusal Relation and its Potential Implementation into CAD/CAM DentistryFeaturesIn spite of the long history of digital dentistry, the accuracy of the prosthetics fabricated with CAD/CAM systems is far from satisfactory. Jaw opening during taking impression elicits deformation of the mandible and the lower dental arch, and consequently causes the inaccuracy of occlusal relationship of the upper and lower dental arches on the CAD data. The method presented here utilizes the check-bite record at the maximum intercuspation to correct the relative positions among the teeth in the dental arches as well as between the arches. After this correction, the accuracy of the CAD data is satisfactory enough for the fabrication of the dental prosthetics which need no adjustment during their setting. Targeted Application(s)/IndustryThis method uses the newly-developed check-bite recording technique together with the conventional precious impression or optical impression techniques. It can easily be applied to the commercial CAD/CAM systems in the market. We hope to collaborate to the manufacturers of dental CAD/CAM systems to increase the accuracy of the systems. |
