Tohoku University. Research Profiles

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"C" Theme - 19 Result(s)

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Cavitation Peening

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Features
Surface modification method to improve fatigue strength has been developed using cavitation impacts, which are normally causes severe damage in hydraulic machineries. The method was called "cavitation peening". In order to make clear the mechanism, a load controlled plate bending fatigue test machine was developed. It was proved by using the test machine that the threshold level of stress intensity factor was improved about 1.9 times by cavitation peening. The mitigation of hydrogen embrittlement by cavitation peening was also improved.

Targeted Application(s)/Industry
The cavitation peening can apply to component of automobile and forging die. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

Graduate School of Engineering
SOYAMA, Hitoshi, Professor Doctor of Engineering

Ceramic Microspheres for Intra-Arterial Radiotherapy of Cancer

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Features
We developed ceramic microspheres around 25 µm in diameter containing yttrium and/or phosphorus for intra-arterial radiotherapy of deep-seated cancer. The microspheres are activated to β-emitter by neutron bombardment. When radioactive microspheres are injected into a target organ, they are trapped inside small blood vessels in the tumor, blocking the nutritional supply to the tumor and delivering a large, localized dose of short-range, highly ionizing β-rays.

Targeted Application(s)/Industry
Our microspheres are useful for minimally invasive treatment of inoperable deep-seated cancer, especially liver cancer. We want to advance our research for clinical application in collaboration with drug manufacturer and/or medical device company.

Graduate School of Biomedical Engineering
KAWASHITA, Masakazu, Associate Professor PhD

Changing Corporate In-Service Training

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Features
We have developed a system named PF-NOTE that the system uses video cameras, clickers and a computer to bookmark an audience's clicker feedback into simultaneously recorded video. We are also doing research for creating effective education or learning programs by using the developed system. The system has been mainly used for reflective learning, and we have found that this system is effective in various situations for both teacher and learners, such as practice teaching for early career teachers, developing presentation skills, and developing discussion skills.

Targeted Application(s)/Industry
We offer PF-NOTE system(s) and education/learning program(s) to companies that are of particular interest with respect to communication skills training, passing skills to the younger generation of employees, observation skill training and job interview training.

Graduate School of Educational Informatics Research Division
NAKAJIMA, Taira, Associate Professor

Chemical imaging devices which operate in severe environments

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Features
We developed both pH and Cl- imaging plates, which can visualize the pH and Cl- concentration on metal surfaces in acidic environments. The pH range is from 3.0 to 0.5, and Cl- concentration up to 4 M can be measured. Fluorescent dyes are successively used for pH and Cl- imaging in the field of biology, but their sensitivity tends to be insufficient in acidic and/or highly concentrated chloride solutions. A glass plate with a sol-gel sensing layer, which contains a pH indicator or a Cl- sensitive florescent dye was fabricated and validated using the solutions with various pH values and Cl- concentrations. Changes in the pH and Cl- distribution on stainless surface in an acidic environment were measured quantitatively.

Targeted Application(s)/Industry
The newly developed imaging plates can be used to investigate the mechanism of various chemical reactions, such as corrosion, which occurs in an acidic environment. Micro-flow imaging using our sensing technique will be a promising approach to understand the catalytic chemistry of metal surfaces.
強調

Department of Materials Science, Graduate School of Engineering
MUTO, Izumi, Professor Doctor of Engineering

Chemical Recycling of Problematic Polymeric Wastes

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Features
The Yoshioka Laboratory works on the recycling of various polymers by thermal and wet processes. Plastics such as poly(ethylene terephthalate) (PET), polyvinyl chloride (PVC), and high impact polystyrene (HIPS) cause serious problems during their recycling for the recycling process and the environment. However, these materials can also be seen as a resource for new materials. The decarboxylation of PET results in high yields of benzene that can be used as a chemical feedstock. Another important feature is the dehalogenation of flame retarded plastics and PVC. Dechlorinated plastic waste can be an important source for hydrocarbons, which can be used as fuels and chemical feedstock. The chemical modification of PVC offers the possibility of new materials with new properties. Modified PVC can be used as antibacterial material or as a material with ion exchange properties. The removal of brominated flame retardants from HIPS leads to higher recovery rates of styrene during thermal processing. When a wet process is used, the resulting flame retardant free HIPS can be reused.

Targeted Application(s)/Industry
We are eager to help companies to overcome their problems during recycling and recovery, and provide solutions for the treatment of waste materials.

Graduate School of Environmental Studies
YOSHIOKA, Toshiaki, Professor Graduate School of Engineering

Clinical application of pulsed jet device to achieve maximal resection of the lesion and functional preservation

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Maximal resection and functional preservation, are often conflicting, but are both important factors to improve patient’s quality of life. Pulsed jet system is designed to achieve this goal by removing lesions without impairing small diameter vessels (100 μm - ). Standardization and specialization of surgical procedures is expected to achieve more easily compared to conventional surgical device using pulsed jet system. We have already reported significant increase of tumor removal rate, significant reduction of intraoperative blood loss and operation time in difficult lesions in the vicinity of sella turcica and skull base through expanded transsphenoidal approach. The system can eject small amount ( - 2 μl) of high speed liquid (- 50 m/s) for minimally invasive surgery, such as endoscopic, catheter, and microscopic surgery. The system is now under stage to expand clinical application outside the field of neurosurgery, and we are expecting new collaboration who can deal with increasing safety, effectiveness, differentiation from conventional instruments, accessibility.

Department of Neurosurgery, Graduate School of Medicine
TOMINAGA, Teiji, Professor Doctor of Medicine

Clinical Applications of Motion Capture System for Living Body

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Features
We have developed a wireless motion capture system for living body that could non-invasively measure various biological movements without any contact. By utilizing the LC resonant magnetic marker due to the latest magnetic engineering technology, we have achieved a magnetic wireless system which could be used even in a shielded space such as oral cavity by applying a magnetic field from outside the body. By using the infrared reflective markers of small and light, we have also succeeded in developing an optical system capable of synchronous real-time measurement at up to 50 locations at 250 hertz.

Targeted Application(s)/Industry
This new system can three dimensionally analyze various biological movements and can be applied to such diagnostic and medical equipment that requires a motion analysis non-invasively without any contact. It is possible to specialize this system to suit the required conditions, so I would like to joint research with companies and organizations that want to take advantage of this system.

Liaison Center for Innovative Dentistry, Graduate School of Dentistry
KANETAKA, Hiroyasu, Associate Professor D. D. S., Ph. D

Combustion and Atomization Technology in High-Pressure Gas Turbine Conditions

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Features
Combustion is a complex phenomenon composed of multi-dimensional dynamics of temperature, concentration, velocity, and chemical reactions. Advanced combustion technologies are essential for solving the environmental and energy issues. Our laboratory has a high-pressure combustion test facility which is a unique experimental facility in the world. Research projects have originality, especially in the field of high-pressure combustion and laser diagnostics, and focus on not only aerospace engineering and energy engineering including new fuel technology but also atomization technology and safety operations of chemical plants mostly operated at high pressure.

Targeted Application(s)/Industry
Potential collaborations are in the research fields of aerospace propulsions, automobile engines, power generations and chemical plants, in terms of development of gas turbine combustors for various fuels, generation and control of fuel atomizers, laser diagnostics of combustion and safety design of chemical reactors.

High Speed Reacting Flow Laboratory, Institute of Fluid Science
KOBAYASHI, Hideaki, Professor Doctor of Engineering

Composition and Structure Control of Steel and Other Metals Using Refining and Solidification

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Features
The production processes of base materials, such as iron- and steel-making processes, belong to an age of technical innovation toward an eco-friendly society. To support this innovation, fundamental studies are being conducted in our laboratory. The main subjects are "Process Design of Highly Efficient Reactors by Enlargement of Reaction Interface", "Recovery of Rice Field damaged by Tsunami using Steelmaking Slag", "Recovery of Rare Metals from By-product of Steelmaking Process", and "Control of Non-metallic Inclusions on Clean Steel Production".

Targeted Application(s)/Industry
Directly we are carrying out the collaboration with steelmaking companies, however, our technology can be applied to non-ferrous production and recycling process using high temperature treatment.

Institute of Multidisciplinary Research for Advanced Materials
KITAMURA, Shinya, Professor Doctor of Engineering

Construction of Monitoring Systems for Genetic Diversity in Aquatic Organisms

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Features
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.

Targeted Application(s)/Industry
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.

Graduate School of Agricultural Science
IKEDA, Minoru, Associate Professor Doctor of Agricultural Sicence

Converting Food Waste into Valuable Materials with Hot-Compressed Water Treatment

Features
Treatment with hot-compressed or subcritical water is an attractive process for converting food waste into valuable materials. Water is an environmentally acceptable solvent and is cost effective; thus, hot-compressed water has recently received attention as a medium for resource recovery from waste. We chose fish gelatin as a model of marine food waste (especially fish skin fraction), and we determined the optimum conditions for the degradation of fish gelatin with hot-compressed water between 160 and 240 °C at 2 MPa. These conditions were optimized in terms of maximizing the concentrations of specific degradation products, such as peptides, and ACE inhibitory.

Targeted Application(s)/Industry
The disposal of fish waste has become a serious problem in marine food industries because approximately half of the fish mass, including the skin, bones, entrails, and some meat. The feasibility of converting organic waste by hot-compressed water (subcritical water treatment) into useful resources has been demonstrated together with Industry.

Graduate School of Agricultural Science
FUJII, Tomoyuki, Professor Doctor of Agriculture

Cooperative Distributed Knowledge Processing and its Applications towards Cyber Society

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Features
Toward the intelligent information space (cyber society) which supports various cooperation and collaboration of human beings and artificial systems, we are promoting the research and development of cooperative distributed knowledge information processing based on ICT technology. We aim to realize smart applications such as user-oriented information retrieval and utilization services, intelligent networking for various communications, and an intelligent living environment based on agent-based IoT technologies, by using autonomous intelligent entities called agents.

Targeted Application(s)/Industry
The following applications would be expected, i.e., an ICT application which has robustness and flexibility against the changes of the system’s environment; the agent-based IoT and M2M applications; the cooperation technologies and/or middleware for smart robots (and/or software agents).


Research Institute of Electrical Communication
Tetsuo Kinoshita, Professor Doctor of Engineering

Corpus-Based Lexicology of Modern Japanese

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Features
I am doing empirical research in the vocabulary in Modern Japanese, focusing mainly on the senses and usages of nouns and verbs, based on evidence from corpora. I am also interested in the theoretical side of the corpus studies and the use of corpora in other languages, such as English. I am on of the pioneers in this field in Japan.

Targeted Application(s)/Industry
Application is possible in dictionary-making, teaching of Japanese and English.

Graduate School of Arts and Letters
GOTOO, Hitosi, Professor M.A.

Creation of a high functional bio-interface using laser fabrication

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 Using laser fabrication, we are developing techniques to enhance material surface properties and functionality. For example, to create a functional interface, we aim to clarify, by way of simulation and experimentation, the phenomenon that occurs when the surface of a material is irradiated using a laser beam.
 We expect that the results of our research will be widely applicable, including biomedical devices.

■ Creation of biocompatible surfaces
 Materials used for artificial organs, vessels, and other bio-implants require excellent tissue and cell biocompatibility. Therefore, we are exploring the creation of biocompatible surfaces using a new laser irradiation process in this study.
 We have succeeded in imparting a biologically active function to titanium-based materials by applying the laser irradiation technique. When such a material that has a biologically active function is inserted in a living body, hydroxyapatite (the principal constituent of bones and teeth) precipitates on the surface. Using the laser irradiation technique, we can manufacture bone-adherent implants, and we envisage their application to artificial joints or dental implants.
 This research aims to discover such breakthrough solutions for biomedical applications using the laser irradiation technique.

Department of Mechanical Systems and Design, Graduate School of Engineering
MIZUTANI, Masayoshi, Associate Professor Ph. D. (Engineering)

Creation of cancer cell specific oligonucleotide therapeutics

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Focusing our reseach interest mostly on the recognition and complexation behavior control of bioplymrs, such as DNA/RNA, proteines and so on. Another topics are reaction control based on molecular recognition phenomena in both ground and electronically excited states, we are pursuing mechanistic and synthetic studies on asymmetric photochemistry with supramolecular biopolymers as chiral reaction fields.

Institute of Multidisciplinary Research for Advanced Materials
WADA, Takehiko, Professor Doctor of Engineering

Creation of New-Functionalized Nano-Carbon Using Advanced Plasma Technology

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In this research, novel nano-carbons such as fullerene, carbon nanotube, grapheme, and so on, are synthesized with structure (diameter, length, etc.) control using plasmas. Furthermore, by means of encapsulating other atoms or molecules inside the nano-carbons, new functionalized materials which have the properties of superconductor or magnetic semiconductor. Up to now, a nano-sized diode which contains an n-type and p-type semiconducting junction is successfully formed by means of encapsulating alkali metals as the electron donor and halogen atoms as the electron acceptor alternately inside the semiconducting carbon nanotube.
Furthermore, by using these novel functionalized materials, electronic devices with high efficiency and performance (energy conversion devices such as solar cell, transistor, superconducting device, optical device, quantum computing device, and so on) are developed.
We are prepared to provide academic consultations to companies interested in our research.

Department of Electronic Engineering, Graduate School of Engineering
HATAKEYAMA, Rikizo, Professor Ph. D

Creation of Organic-Inorganic Hybrid Materials and their Application

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Organicl compounds, such as liquid-crsytals, polymers, etc., can be hybridized with inorganic materials in atomic level, in particuar, with nanoparticles. Both of high effeciency of processing ease for the former and high possibilities of physical properties for the latter can be attained through the complete solution of trade-off characteristics. For example, this atomic-level hybridization technique makes inorganic nanoparticles active for the response like a liquid crystal. By using this method, we expect we can conduct effective collaborative research in medical fields.

Institute of Multidisciplinary Research for Advanced Materials
MURAMATSU, Atsushi, Professor Doctor of Engineering

Creation, Understanding and Distribution Technologies for Next-generation CGM/UGC content

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Our lab is tackling the research on innovative intellectual processing methods for digital content, especially CGM/UGC (Consumer Generated Media / User Generated Content). We focus especially on “digital content creation technologies”, “digital content understanding technologies” and “digital content distribution technologies”. Concrete research topics in “digital content creation technologies” are : automatic system for 3DCG animation creation by scenario input (fig.1), automatic skeleton creation method for 3DCG models, automatic cloth-fitting room(fig.2) and display system for floating 3D images (fig.3) etc. Research topics in “digital content understanding technologies” are: automatic video metadata generation technology for video retrieval, high-performance light source detection for photo/CG synthesis, image matching technology with distance-free concept etc. And research topics in “digital content distribution technologies” are: cyclic broadcasting methods for Internet videos, automatic objectionable content detection (especially for pornographic videos) and Web security etc. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

New Industry Creation Hatchery Center (NICHe)
AOKI, Terumasa, Associate Professor Doctor of Engineering

Cyber Physical Systems Security and Its Applications

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Features
Our study focuses on information security technologies for the next-generation ICT society fusing real-world and cyber-space computing. We are now conducting the research and development of ultra-high-speed, ultra-low power LSI computing to perform security functions such as encryption and error-correcting codes, secure implementation technologies to protect systems from various physical attacks (attacks carried out by physical access to the system), and security optimization technologies tailored to the system usage environment (the information environment and electromagnetic environment).

Targeted Applications / Industry

We can provide collaboration and information exchange services in the fields of information security. In particular, We have experiences of domestic/international collaborative researches on embedded security with some companies, universities, and governmental institutes.

Research Institute of Electrical Communication
HOMMA, Naofumi, Professor Ph.D Info. Sci.