Tohoku University. Research Profiles

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"K" Researcher - 55 Result(s)

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Fuel Cell and Energy Storage Using Ion Conduction in Ceramics

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Solid oxide fuel cell is a highly efficient power generation system operating at high temperatures using ion conducting ceramics. We conduct basic and multi-aspect research on the electrochemical and mechanical behaviors of the materials for further improving the efficiency, cost, and reliability of solid oxide fuel cells. We are also interested in the reverse operation of fuel cells which enables the storage of the electricity from renewable sources into hydrogen or methane, etc.

Targeted Application(s)/Industry

Graduate School of Environmental Studies
KAWADA, Tatsuya, Professor Doctor of Engineering

Digital Signal Processing

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We are researching the following theme based on theoretical optimality and broad basis for digital signal processing.
(1) Image and video signal processing
(2) Image and video restoration
(3) Adaptive digital signal processing
(4) Optimal design of the digital filter
(5) Signal processing theory, linear system theory and circuit network theory
(6) Applications of digital signal processor

Targeted Application(s)/Industry

Our research can be applied to design and effective realization of optimal signal processing method for communication, measurement, control, and circuit design in various industry fields.

Dept. of Electronic Engineering, Graduate School of Engineering
KAWAMATA, Masayuki, Professor Doctor of Engineering

Development of the e-voting system

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A purpose of this study is to make the environment where many Japaneses are easy to vote for, using ICT. In Japan, it is difficult to introduce the e-election system. This is because there is legitimate limitation. So we turn to case study to discover means to overcome the problem.

Targeted Application(s)/Industry

Graduate School of Infomation Sciences
KAWAMURA, Kazunori, Associate Professor Master of Law and Politics

Resarch and development for maintaining and improving brain and mental health

Features

The Smart Aging International Research Center (SAIRC) was founded on 1 October 2009. This Center proposes the creation of a new field to produce well-rounded personnel who have gained “totally comprehensive intelligence” from their experience, in order to cope with various problems associated with the diverse and complex super-aging society. To this end, the Center will promote interdisciplinary cooperative research, international collaborative research projects, and research collaborations with industry, as well as disseminate and exchange information by holding international conferences and symposia.  The SAIRC is designed to develop an approach for maintaining and improving brain and mental health in a diverse and complex society from the standpoints of brain science, with the aim of maintaining and improving brain functions; cognitive neuroscience and psychology, with the aim of maintaining a healthy and tranquil state of mind at each aging stage; and philosophy, phenomenology and ethics that provide a radical reconsideration of the concept of the “mind.” We welcome collaborative researches with companies, and academic consultations.

Institute of Development, Aging and Cancer
KAWASHIMA, Ryuta, Professor Doctor of Medicine

Smart Ageing Initiative

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In Japan, the percentage of elderly people aged 65 years or over was 23.1% in 2010. It is no doubt that Japan is the world's first super-aging society. In such a super-aging environment, it is necessary to form a society in which each individual can play an active role even as one becomes older in order to maintain and improve the quality of life of all people and to maintain a healthy society. In advanced brain science, research from the fields of brain function imaging, cognitive science, and psychology has been utilized with the aim of realizing a healthy aging society. Up to date information on various new technologies and related discoveries has been disseminated so that individuals can live a healthy life with peace of mind at every stage of aging, while maintaining and improving the health of their brain and mind in a diverse and complex society.

Targeted Application(s)/Industry

We believe to overcome super-aging environments is not only an object of public concern but also big business chances to create new industries.

Institute of Development, Aging and Cancer
KAWASHIMA, Ryuta, Professor Doctor of Medicine

Exploration of Innate Immune Regulators

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Innate immunity is the first line of defense against infectious microorganisms, and the basic mechanisms of this process, including pathogen recognition and immune response activation, are evolutionarily conserved. To screen pharmaceuticals that target innate immunity, we established an ex vivo culture system based on the innate immune response of Drosophila, which is highly useful for identifying immune regulators that act on human innate immunity. We use this system to search for compounds that regulate innate immunity.

Targeted Application(s)/Industry

Innate immunity is a good target for the development of immune regulators to suppress unwanted immune responses, such as septic shock, inflammatory diseases and autoimmunity.

Graduate School of Pharmaceutical Sciences
KIKUCHI, Haruhisa, Associate Professor

Physical properties and spin dynamics of nanomagnets and their application to magnetic memory devices

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Rapid progress toward information society has aroused much attention to magnetic memory devices because of their nonvolatility, high data density, low cost, high-speed accessibility. With reducing their constituent size down to 10 nm, various effects, such as surface and quantum size effects and thermal agitation of spins, appear and hamper further advance in device performance. It is indispensable to elucidate various physical properties of nanosized magnets. Under this circumstance, our intensive effort is focused on (1) size effect on crystal phase of magnets, (2) highly sensitive magnetic detection technique, (3) magnetic behavior of single nanomagnets, (4) new SPM lithography, and (5) new media and technology for ultrahigh density recording.

Institute of Multidisciplinary Research for Advanced Materials
KITAKAMI, Osamu, Professor Doctor of Engineering

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

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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

Interactive Content to Enrich Our Lives

Features

(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.

Targeted Application(s)/Industry

Research Institute of Electrical Communication
KITAMURA, Yoshifumi, Professor Doctor of Engineering

Development of Immunobiotic Evaluation System for Functional Feeds as a Livestock Animal Model

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Pattern recognition receptor (PRR) family plays an important role in the defense through recognition of pathogen-associated molecular patterns or microorganisms-associated molecular patterns (PAMPs/MAMPs).
Some functional feed materials are thought to regulate intestinal immunity by contact and stimulation of epithelial cells and immunocompetent cells via PRRs in the gastrointestinal tract and induction of cytokine production. In this "new world" of feed immunology, however, much remains unknown about the underlying mechanisms of intestinal immunity because of lack of appropriate intestinal immunoassay system for livestock animals.
We have advanced application of originally established porcine and bovine intestinal epitheliocytes (PIE, BIE) cell lines (see photo) for evaluation of immunobiotics and immunogenics exerting anti-inflammatory responses both in PIE cell monolayer and co-culture system with porcine peyer's patch immune cells as a peyer's patch culture model (see illustration).

Targeted Application(s)/Industry

This evaluation system may also contribute to elucidate immunoregulatory mechanism of immunobiotics and immunogenics mediated by pattern recognition receptors essential to future development of not only immunobiotic feeds but also vaccines using immunobiotics to prevent specific diseases. This can benefit mankind by offering immunobiotic feeds as a safer alternative to conventional antibiotic drug therapy.

Graduate School of Agricultural Science
KITAZAWA, Haruki, Associate Professor Doctor of Agriculture

Combustion and Atomization Technology in High-Pressure Gas Turbine Conditions

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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

High Performance Computer Architectures and their Applications

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My research interests include the design and development of high-performance supercomputing systems and their applications. Targeted areas range from the key components of supercomputing systems, which include processor architectures, memory subsystems, network systems, task schedulers, and compilers, to high-performance multimedia processing algorithms such as photo-realistic computer graphics.

Targeted Application(s)/Industry

Currently I am conducting joint-research projects with several companies in the fields of high-performance computer architecture design and advanced simulation technologies for industrial design such as next-generation supercomputers and highly efficient and comfortable regional jets.

Graduate School of Information Sciences
KOBAYASHI, Hiroaki, Professor Doctor of Engineering

Development of the next generation anti-HIV agents

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HIV infection is one of most serious concern in infectious diseases. We will perform anti-HIV assays for unmet medical needs in control of HIV infections with established novel assays by us. We have developed reverse transcriptase inhibitor that has novel mechanism of inhibition, translocation-inhibition (J Biol Chem, 2009). Dr Kodama participated in the primary screening and development of a new HIV integrase inhibitor, elvitegravir (J Virol 2009), which phase III clinical trials by the Gilead Sciences will complete, soon. We have a representative resistant HIV strain-library for anti-HIV screening and several target oriented high through-put screening systems.

International Research Institute of Disaster Science
KODAMA, Eiichi, Professor MD, PhD

Development of Early Diagnosis and Treatment System for Lymph Node Metastasis

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Animal studies of lymph node metastasis are constrained by limitations in the techniques available for noninvasive monitoring of the progression of lymph node metastasis, as well as difficulties in the establishment of appropriate animal models. To overcome these challenges, this study has developed a mouse model of inter-lymph-node metastasis via afferent lymphatic vessels for use in the development of imaging modalities and treatment methods.

Targeted Application(s)/Industry

Non-invasive equipments for early diagnosis and treatment of lymph node metastasis.

Graduate School of Biomedical Engineering
KODAMA, Tetsuya, Professor PhD(Engineering), PhD(Medicine)

Electrical Spin Generation and Manipulation in Semiconductors

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Since spin orbit interactions caused by the structural inversion asymmetry and the bulk inversion asymmetry induce an effective magnetic field in III-Vsemiconductor heterostructures, it is possible to realize the new functional devices based on the electrical control of the spin precession. We study the electrical spin generation by using spatial modulation of spin orbit interaction, which demonstrates Stern-Gerlach spin filter in semiconductors, and research ultra-fast spin dynamics by using time resolved Kerr rotation microscopy. We also investigate a spin MOSFET based on the perpendicular magnetic materials and electric-field induced magnetization control. We can reduce the leak current and the signal delay in the logic circuit. With the non-volatility of the ferromagnetic source and drain electrodes, random access memory is also enabled by using the spin MOSFET structure.

Targeted Application(s)/Industry

Target application will be low power logic devices and non-volatile memory based on electron spins and also future metal-based spintronic devices.

Department of Materials Science, Graduate School of Engineering
KOHDA, Makoto, Associate Professor Doctor of Engineering

Development of Interconnect Materials and Processes for High Performance and High Reliability Electric Devices

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Electronic products can be operated not only by semiconductors but also by metal interconnections attached to the semiconductors. Required properties for the metal interconnections are ohmic contact, diffusion barrier property, adhesion with semiconductors, and low resistivity, corrosion resistance, process reliability. Our group has committed ourselves to develop new metals and processes to meet the needs of wide-ranged device producers with consideration of cost performance. Topics of our research include (1) Cu alloys to self-form a diffusion barrier layer in multilayer interconnection of Si devices, (2) Cu alloys to form a reaction-doping layer in IGZO oxide semiconductors, (3) Nb alloys to achieve mechanical and thermal reliability with good ohmic property for SiC power devices, (4) Cu alloys for transparent conductive oxide such as ITO, (5) screen-printable Cu paste lines for solar cells, etc..

Targeted Application(s)/Industry

Our research efforts are targeted at metallization and interconnections for advanced LSI, flat panel displays, touch panels, power modules, solar cells, and other electronic devices. Collaborators include material producers, equipment vendors, and device producers in the entire value chain of electronic products.

Department of Materials Science, Graduate School of Engineering
KOIKE, Junichi, Professor PhD

Universal Design in Language Use

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My current research topic is "universal design in language use," with special reference to order in language and thought. In particular, I am investigating (1) similarities and differences in neural processing of languages with different basic word orders, (2) to what extent the order in non-verbal thought is affected by the order in language, and vice versa, and (3) what is the optimal order in human language and human thought, if any.

Targeted Application(s)/Industry

Although I am conducting basic research, I believe it helps develop effective language teaching/learning methods, rehabilitation programs for aphasia, and so on.

Graduate School of Arts and Letters
KOIZUMI, Masatoshi, Professor PhD

Development of Atom-scale Spectroscopy Measurement for Nano Materials

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Scanning tunneling microscope (STM) and atomic force microscope (AFM) are among a few microscopes which enable a direct observation of atomic scale structures of materials. If compared with other electron microscope like transmission electron microscope (TEM), the energy of the electron used for STM is very low that has a big advantage of low damage for sample. Thus STM and AFM are regarded as the most important tools to characterize materials in nanotechnology. The research is now developing from a mere observation of the shape of material to the characterization specific properties of materials with an atomic scale resolution. These properties include spin and molecule vibration; well established techniques like ESR/NMR and infrared-spectroscopy requires more than billions of molecules to obtain data, while STM can obtain these data for a single molecule.
We are interested following issues and like to have a collaboration with industrial companies.
1. Molecule-scale morphological characterization of soft-material, polymers and bio material.
2. Site specific vibration spectroscopy of molecules with an atomic resolution.
3. Single spin detection with ESR-STM method
4. Developing atom-scale characterization tool

Institute of Multidisciplinary Research for Advanced Materials (IMRAM)
KOMEDA, Tadahiro, Professor Doctor of Science

Development of a Novel Quantification Method for Diarrhetic Schell Fish Poisoning

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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.

Targeted Application(s)/Industry

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

Graduate School of Agricultural Science
KONOKI, Keiichi, Associate Professor PhD