Research Profiles

JP

"D" Keywords - 75 Result(s)

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 D

[Die casting]

Advanced die casting process computing with solidification phenomena

 
 
 
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特徴・独自性
  • Die casting is a method of mass-producing high-precision castings in a short time by filling the mold with molten metal at high pressure and high speed. Since solidification is completed quickly under high pressure, various defects peculiar to die casting occur. Significantly, the casting cavity has a high incidence in die casting, and it is a factor that hinders the quality. Therefore, a numerical approach to the die casting process is expected to prevent these problems, and the information obtained from the numerical analysis is expected to be reflected in the casting plan to reduce the number of prototypes, the lead time to product development, and the cost. In this study, a multiphase flow analysis with solidification phenomena of molten aluminum inside mold was conducted for a high-pressure die casting process of the throttle body.
実用化イメージ

Automotive industry, Automotive suppliers, Foundry industry

Researchers

Institute of Fluid Science

Jun Ishimoto

[Digital Content]

Interactive Content to Enrich Our Lives

 
 
 
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特徴・独自性
  • (1) Displays and Interactive Techniques
  • Designing original display systems to show visual information accurately and effectively, and interaction techniques to make better use of these display systems.
  • (2) Interactive Video Content
  • Creating new interactive content from real video taken by cameras and computer-generated animations.
  • (3) Modeling and Controlling the “Atmosphere” in a Conversation Space
  • Aiming to stimulate the “atmosphere” in a conversation space by supplying real-time feedback to the users, we are exploring means of sensing and analyzing change in the space.
  • (4) Designing and Evaluating Novel Interaction Techniques
  • Designing and evaluating novel interaction techniques on target selection for variety types of displays including large and touch displays.
実用化イメージ

Researchers

Research Institute of Electrical Communication

Yoshifumi Kitamura

[digital learning material]

Applying Blended Learning to Special Needs Education

 
 
 
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特徴・独自性
  • I am interested in the human communication process and the man-machine interaction in some educational situation. I conducted interviews, questionnaires, behavior observations and experiments of students with special educational needs, their parents and teachers to investigate the needs, accessibility, usability, efficacy and its factors of blended learning and digital learning materials.
実用化イメージ

The outcomes of our research will make contribution to the design and development of teaching/learning materials and methods.

Researchers

Graduate School of Education

Masayuki Kumai

[Digital signal processsing]

Analysis of Biological Signals and Visualization

 
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特徴・独自性
  • Recent development of sensor technology and ICT have enabled collection and acculumation of huge amount and wide variety of biological data. We have been investigating analysis and processing methods of the biological data for supporting clinical diagnosis and health care. For example, development of extraction algorithm of fetal electrocardiogram from maternal abdominal siglnals, and estimation and visualization algorithms of status of autonomic functions based on diverse biological signals.
実用化イメージ

System development of biosignal anaysis, visualization, and diagnosis.
Development of monitoring and evaluation methods of alertness and sleepiness of traffic driver and workers.
Shift work scheduling based on circadian clock.

Researchers

Unprecedented-scale Data Analytics Center

Mitsuyuki Nakao

[Digital Teaching/Learning Materials]

ICT Use by Teachers and Students in the Classrooms of Elementary and Secondary Schools

 
 
 
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特徴・独自性
  • My research focuses on ICT use in the classrooms of elementary and secondary schools in Japan.
  • When we consider introducing technologies to the classrooms, particularly for the compulsory education in public schools, there are "inevitable issues" around consistency with the educational mission of academic development of school students, practicability and sustainability of the use of technologies for busy teachers, cost economy, and equity in the public education.
  • My research is characterized by its direction toward empirical approach to the ICT use in consideration of these issues.
  • In the past, I have been engaged in (1) a research that found the most accepted ICT among teachers was a document camera and the way teachers use it was dependent on each teacher's teaching style, (2) a research on the technology that takes fewer man-hours to develop digital textbooks and other contents, and (3) a development of e-learning materials with which elementary school students can learn key board typing.
実用化イメージ

My research can be applied to a development of teaching support tools for elementary and secondary school teachers which can be used in the classroom and a consulting service to assist development of digital teaching materials for school students.

Researchers

Graduate School of Information Sciences

Tatsuya Horita

[dimensional metrology]

Development of Sensors and Measuring Systems for Ultra-Precision Manufacturing and Nanomanufacturing

 
 
 
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特徴・独自性
  • The research is being focused on measurement of surface forms of precision workpieces and stage motions of precision machines, which are important items for ultra-precision manufacturing and nanomanufacturing. Optical sensors are being developed for measurement of angle and displacement, which are fundamental quantities for manufacturing. Technologies for improvement of the sensor sensitivity and bandwidth, reduction of the sensor size as well as new multi-axis sensing methods are being The research is being focused on measurement of surface forms of precision workpieces and stage motions of precision machines. Optical sensors are being developed for measurement of angle and displacement. A number of scanning-type measuring systems for precision measurement of surface forms and stage motions are also being developed. Error separation algorithms and systems for straightness and roundness, which are the most fundamental geometries treated in ultra-precision manufacturing, are being investigated. Novel systems based on scanning probe microscopy are under development for micro- and nano-structures as well as freeform optics in responding to new and important challenges from ultra-precision manufacturing and nanomanufacturing.
実用化イメージ

The multi-axis optical displacement and angle sensors developed in the laboratory are expected to measure motions of semiconductor/IC manufacturing and inspection equipment, precision machine tools, ultra-precision measuring instrument. The surface profile measurement systems are expected t play an important role in ultra-precision manufacturing and nanomanufacturing industries.

Researchers

Graduate School of Engineering

I Ko

[Dinophysistoxin]

Development of a Novel Quantification Method for Diarrhetic Schell Fish Poisoning

特徴・独自性
  • We have investigated isolation and structure determination of natural products and evaluated mode of their actions. We have especially focused on marine natural products causative for a food poisoning, diarrheic shellfish poisoning (DSP), which has spread worldwide and threatened regional fishery industry. Dinophysistoxin produced by the dinoflagellate Dinophysis spp. and okadaic acid, are thought to be responsible for DSP. Acute toxicity test using mice has been the primary method for detection of DSP in the fish market, though an alternative method to quantify DSP without sacrificing mice has been requested. We isolated OABP2, a novel okadaic acid binding protein, from the marine sponge Halichondria okadai and succeeded in expression of the recombinant OABP2 in E. coli, which eventually showed high affinity to the DSP toxins.
実用化イメージ

We are now working on visualization of OA by utilizing OABP2 in order to provide an easy and quick quantification method for DSP.

Researchers

Graduate School of Agricultural Science

Keiichi Konoki

[diol]

Development of catalytic reaction system for direct synthesis from CO2 and diols

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特徴・独自性
  • We found an effective catalyst system composed of CeO2 and 2-cyanopyridine for direct and catalytic polycarbonate formation reaction from CO2 and diols. CeO2 acted as an activator for CO2 and diols, and 2-cyanopyridine shifted the equilibrium in favor of the product side by hydration of 2-cyanopyridine, promoting the reaction. Green polycarbonates can be synthesized by combination of the catalyst system with a technique of diol syntheses from biomass.
実用化イメージ

This catalyst system is effective for direct transformation of CO2, contributing to the effective utilization and emission reduction of CO2. Combination of the catalyst system with a concentration technique of CO2 will bring about much advantage.

Researchers

Graduate School of Engineering

Keiichi Tomishige

[disaster management of companies]

Business Continuity Management (BCM)

 
 
 
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特徴・独自性
  • Business continuity management (BCM) is a strategy of a company or a public organization to continue critical operations or recover them early even when they suffer serious damage from disasters, major accidents, terrorism, infectious diseases and so on. The plans for BCM is called BCPs. Japanese government and industry organizations actively promote introduction and improvement of BCM. My laboratory have studied how to spread and improve BCM. I participate in development of governmental guidelines for BCM. I also operate a BCM study group consist of companies, governmental organizations and research institutes in Sendai City.
実用化イメージ

I would be able to give an advice to companies or organizations which are going to introduce or improve their BCM and BCP at the request of them. In addition, collaboration with corporate groups can be assumed to promote or improve BCM practically.

Researchers

International Research Institute of Disaster Science

Hiroaki Maruya

[Disaster prevention]

[Disaster Response]

Research and Development of Space Exploration Robots

 
 
 
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特徴・独自性
  • We study and develop mobile robotics technology for lunar and planetary exploration. Our technology is featured by rich experience in locomotion mechanisms for highly rough terrain and advanced slippage control in loose soil environment. Also by 3D map building technology using a laser scanner for autonomous collision avoidance and for operator assistance in remote control/tele-operation. We also contributed to the design and development of Hayabusa and Hayabusa-2, which are sample-return probes developed and operated by Japanese space agency JAXA.
実用化イメージ

These technologies are also applied to terrestrial robots for such as surveillance or disaster response.

Researchers

Graduate School of Engineering

Kazuya Yoshida

[disaster science]

Forecasting eruption transition through geologic and petrologic approaches

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特徴・独自性
  • 1) In addition to geophysical observations, recent advances in volcanic stratigraphy and petrology would make us possible to forecast the transition of volcanic eruptions. We have been developing near-real-time volcanology based on the erupted materials in an early eruption stage.
  • 2) Automation of textural analyses of erupted materials, Risk assessment of volcanic eruption based on eruption stratigraphy
実用化イメージ

Researchers

Graduate School of Science

Michihiko Nakamura

[Disaster-relief]

Robot Technology for Achieving Secure Society

 
 
 
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特徴・独自性
  • Tadokoro Laboratory developed ‘Active Scope Camera,' a world-unique rescue robot that can search deep in rubble piles of collapsed structures through a gap of a few cm wide. It also developed ‘Quince,' a world-unique unmanned ground vehicle that could survey the second to fifth floors of Nuclear Reactor Buildings of Fukushima-Daiichi Nuclear Power Plant. Its technologies was applied industries, including unmanned transfer vehicle for outdoors under ice and snow environment being actually used in a factory of Toyota Motor East Japan, and ‘Robo-Scope' for debris inspection in collaboration with Shimizu Corporation.
実用化イメージ

We have a policy of education through and research for solution to actual problems. Current nearly ten collaborative researches focuses on outdoor investigation, infrastructure/plant inspection, and remote/autonomous task execution by robots.

Researchers

Graduate School of Information Sciences

Satoshi Tadokoro

[Disease resistance]

Study on Molecular Mechanism for Plant Immune System

 
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特徴・独自性
  • Plants have immune system against pathogen infection. In our research group, isolation of disease resistance genes, analysis of signal transduction pathways for disease resistance and characterization of defense-related proteins have been performed so far. In addition, we produced transgenic plants expressing green fluorescent protein under the control of defense-inducible promoter, which will be useful to visualize the induction of defense system.
実用化イメージ

Our knowledge obtained from the study on the mechanism(s) for plant immune system and the reporter transgenic plants will be available for screening chemical compounds activating plant immune system (so-called "plant activator").

Researchers

Graduate School of Agricultural Science

Hideki Takahashi

[disinfectants]

Development and evaluation of various inhibitors and disinfectants for SARS-CoV-2

 
 
 
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特徴・独自性
  • Using the infectious SARS-CoV-2 (severe acute respiratory syndrome coronavirus-2), we are evaluating and developing new therapeutic drug candidates as well as evaluating disinfectants. Further analyses such as mechanism of action and resistance may be applicable. Other pathogens, including influenza virus and drug-resistant bacteria, will be examined upon request and discussion. Through joint and collaborative research with domestic and overseas pharmaceutical companies and related companies, we have experience of their clinical application including basic research.
実用化イメージ

We support development and evaluation of various inhibitors and disinfectants for variants of SARS-CoV-2 as well as wild type.

Researchers

International Research Institute of Disaster Science

Eiichi Kodama

[Dislocation]

newQuantitative analysis of microstructure in nuclear materials by week-beam scanning transmission electron microscopy

概要

We have developed a technique for quantitative analysis of microstructures (e.g., dislocations and irradiation defect aggregates) of activated and nuclear-burned specimens in the context of the Week Beam Scanning Transmission Electron Microscope (WB-STEM) method, which boasts extremely high measurement accuracy as a quantitative analysis method for lattice defects.
In combination with a dedicated heated sample holder with fully automated temperature measurement and current control in a cartridge-type heating furnace, changes in dislocation microstructure can be dynamically measured in-situ along with a highly reliable temperature history.

従来技術との比較

Conventional TEM methods require expertise in reciprocal space and dislocation theory, but our WB-STEM method is equipped with automatic analysis software for film thickness measurement and dislocation loop feature extraction, making it possible to analyze irradiation defects easily and precisely.

特徴・独自性
  • Since its design, the WB-STEM method has been developed for implementation and on-site repair in radiation controlled areas where nuclear materials are handled, with special aperture and diffraction disc selection equipment, control and analysis software.
  • WB-STEM accepts irradiation defect analysis of activated specimens from all over the world, including RPV monitoring specimens from European reactors and neutron-irradiated materials from US research reactors.
  • It is also used to analyze the properties of iron-containing nuclear fuel simulated debris in decommissioning projects.
実用化イメージ

We support research organizations that currently use transmission electron microscopy to observe microstructures to introduce the WB-STEM method by special modification. We will instruct researchers who have no experience using transmission electron microscopy in the procedure for dislocation analysis.

Researchers

Institute for Materials Research

Kenta Yoshida

[Dissimilar materials]

Design and control of new weld interface during welding of dissimilar materials

 
 
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特徴・独自性
  • Welding of dissimilar materials is an important process to manufacture the future structures and devices, but it is hard to produce the high-performance welds because the excessive reaction at the weld interface deteriorates the weld properties. Our group attempts to develop the new dissimilar welding process to yield the new interface with the aimed properties through design and control of interfacial reaction as well as usage of solid-state welding processes, such as friction stir welding and ultrasonic welding.
実用化イメージ

We hope to have collaborative researches with willing companies for practical application of welding of dissimilar materials, including metal/metal and metal/thermoplastic composite, in transportation, infrastructure, and energy industries.

Researchers

Graduate School of Engineering

Yutaka Sato

[Distal myopathy with rimmed vacuoles (DMRV)]

Amyotrophic lateral sclerosis (ALS),Muscular dystrophy,Distal myopathy with rimmed vacuoles (DMRV)/ hereditary inclusion body myopathy (hIBM)

 
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特徴・独自性
  • Distal myopathy with rimmed vaculoles (DMRV) / hereditary inclusion body myopathy (hIBM) is an autosomal recessive disorder characterized clinically by the preferential involvement of the tibialis anterior muscle. It is known that the disease gene underlying DMRV is GNE, encoding glucosamine (UDP-N-acetyl)-2- epimerase and N-acetylmannosamine kinase, two essential enzymes in sialic acid biosynthesis. Decreased sialic acid production causes muscle degeneration. Muscle atrophy and weakness are completely prevented in a mouse model of DMRV after treatment with sialic acid metabolites orally.
  • The aim of this study is to investigate pharmacokinetics and safety of N-acetylneuraminic acid (figure) in patients with DMRV. N-acetylneuraminic acid and N-glycolylneuraminic acid in serum and urine are measured before and after oral administration of N-acetylneuraminic acid. We are prepared to provide academic consultations to companies interested in our research.
実用化イメージ

Researchers

Graduate School of Medicine

Masashi Aoki

[distance education]

Advanced Educational Environment with Interactive Instruction System IMPRESSION

 
 
 
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特徴・独自性
  • IMPRESSION is an interactive instruction system for both face-to-face lesson and distance education.
  • It was designed to facilitate teachers to plan and perform effective and attractive lessons with various multimedia materials, and help to evaluate performed lessons and improve them based on the double loop instructional design process, which is focusing on interaction between a teacher and students.
実用化イメージ

It could be used to perform advanced education with multimedia materials in schools, and also to design and implement training for employees at branch offices.

Researchers

Center for Data-driven Science and Artificial Intelligence

Takashi Mitsuishi

[DNA analysis]

Construction of Monitoring Systems for Genetic Diversity in Aquatic Organisms

 
 
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特徴・独自性
  • Maintaining genetic diversity within a species is a major issue to conserve biodiversity and sustainable use. To monitor genetic diversity in natural and captive populations using adequate genetic markers is the most important step. We have focused aquatic organisms and studied the genetic diversity using an array of DNA analyses. Our research interest includes 1) genetic structure and phylogeography of natural populations in marine and freshwater organisms and 2) genetic management of commercially important species to contribute the stock enhancement programs.
実用化イメージ

Our skill can be applied to environmental assessment and fish resource management. We are collaborating with national institutes and giving advice to private environmental assessment companies.

Researchers

Graduate School of Agricultural Science

Minoru Ikeda

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