Tohoku University. Research Profiles

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"P" Keywords - 101 Result(s)

P

 P

[permeability]

Magnetic Materials (Permanent Magnets, High Frequency Materials, Microwave Absorbers)

Features

The objectives of my researches are the development of high performance magnets and improvement of their magnetic properties. I have already developed following high performance magnets, such as Nd-Fe-B magnets using didymium, Sm-Fe-N high coercive powders prepared by HDDR and Fe-Cr-Co magnets. Recently, I have studied about the reduction of Dy content in Nd-Fe-B magnets for the use of HEV and have succeeded to develop high coercive Dy-free Nd-Fe-B sintered magnets by decreasing the grain size. I have also developed new kinds of microwave absorbers for the use in the frequencies of GHz range using permanent magnetic materials or nanoparticles.

Targeted Application(s)/Industry

High performance magnetic materials can be used in many applications in automobile, home electronics, IT and medical industries. We hope to conduct collaborative researches with companies producing magnetic materials for the use in these applications, which aims to improve magnetic properties or to develop new magnetic materials.

Department of Materials Science, Graduate School of Engineering
SUGIMOTO Satoshi, Professor Doctor of Engineering

[Personal Information Trade]

Blockchain-based Approachs for High Secure P2P-type Decentralized Cloud Storage and Practical Smart Contract for Trading Personal Data

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Features

We are developing a decentralized P2P (Peer to Peer) type cloud storage that realizes innovative level of security by use of surplus storages of P2P nodes with the Blockchain technology. The developed storage can avoid the risk of large-scale information leakage of stored data due to the weakness of the central server. By using our cryptographic currency for rewards and usage fees in the storage, fair storage usage of all users can also be achieved.
In addition, We are developing a unique smart contract technology for practical decentralized trading of personal data among an unspecified number of users.

Targeted Application(s)/Industry

We hope to conduct collaborative researches with companies developing Bitcoin 2.0 type application (e.g. smart contract, Fintech) based on the Blockchain technology, the Internet of Things (IoT) technology, Medical Database for practical use.

Center for Information Technology in Education
SAKAI Masao, Associate Professor Doctor of Engineering

[personal mobility]

Coexistence of humans and mobile robots

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A variety of new mobilities coexisting with humans, such as service robots, self-driving cars, and personal mobility, are expected to be deployed. In this laboratory, we are studying technologies for the safe and smooth coexistence of these various mobile vehicles with humans.
In particular, we are approaching the problem from the aspect of predicting the movement of humans by considering their characteristics such as visual attention.

Targeted Application(s)/Industry

The targeted application is service robots, personal mobility, self-driving cars, and other mobile vehicles that will be expected to coexist with humans, as well as the design of transportation environments for these vehicles to safely coexist with humans.

Graduate School of Engineering, Department of Robotics, Advanced Robotics, ..........
YUSUKE TAMURA, Associate Professor Docter

[pest management]

Lethal effects of blue light on insects

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Features

We revealed the strong lethal effect of short-wavelength visible light (blue light: 400–500 nm) on insects. That is, we found that blue light irradiation by using a common light-emitting diode (LED) can kill the eggs, larvae, pupae, and adults of various orders of insects. Our findings will provide clean and safe pest-control technique as well as important information on the hazards of exposure to visible light.

Targeted Application(s)/Industry

Graduate School of Agricultural Science
HORI Masatoshi, Professor Doctor of Philosophy

[Pesticide]

Study on Molecular Mechanism for Plant Immune System

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Features

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.

Targeted Application(s)/Industry

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").

Plant Pathology, Division of Life Sciences, Graduate School of Agricultural Science
TAKAHASHI Hideki, Professor Doctor of Agriculture

[PET]

Development of Compound Semiconductor Radiation Detectors

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Features

The main research subject of our group is developing material purification methods, crystal growth methods and detector fabrication technologies for compound semiconductor radiation detectors. Our group intensely studies a compound semiconductor, thallium bromide (TlBr), for fabrication of gamma-ray detectors for the advanced radiation applications. The attractive physical properties of TlBr lie in its high atomic number (Tl: 81, Br: 35), high density (7.56 g/cm3) and wide bandgap (2.68 eV). Due to the high atomic number and high density, TlBr exhibits high photon stopping power. The wide bandgap of TlBr permits the device low-noise operation at and above room temperatures.

Targeted Application(s)/Industry

Our group focuses on development of compound semiconductor radiation detectors for advanced radiation applications including ultra-high resolution PET systems, ultra-high resolution SPECT systems, photon counting CT systems and Compton cameras. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

Department of Quantum Science and Energy Engineering, Graduate School of Engineering
HITOMI Keitaro, Associate 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

Radiological Medical Infomatics

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Features

PET and SPECT have very high sensitivity to detect molecule by means of radiation detection, and are considered to be excellent tools for molecular imaging. We are studying and developing data analysis techniques for PET and SPECT data. Using our approaches, we can analyze data in quantitative manner, and obtain physiological functions in living organism.

Targeted Application(s)/Industry

Pharmaceutical companies who are interested in using PET to evaluate efficacy of new drug. Companies which are related to medical informatics, medical equipments.

Cyclotron and Radioisotope Center
WATABE Hiroshi, Professor PhD

Functional and Molecular Imaging with Positron Emission Tomography (PET)

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Features

Using positron emission tomography (PET), we can measure the regional metabolism, perfusion and signal transmission between neurotransmitters and receptors in various organ systems of living humans and animals, such as the brain and heart. Recent technical developments have shown that the mind, or at least some parts of it, can be demonstrated by "imaging".

Targeted Application(s)/Industry

Our group has had considerable achievements in clinical research on drug effects and side effects, elucidation of underlying mechanism of alternative and complementary therapies, as well as exercise physiology.

Cyclotron and Radioisotope Center
TASHIRO Manabu, Professor doctor of medical sciences

[PF-NOTE]

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

[Pharmacokinetics]

Radiological Medical Infomatics

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Features

PET and SPECT have very high sensitivity to detect molecule by means of radiation detection, and are considered to be excellent tools for molecular imaging. We are studying and developing data analysis techniques for PET and SPECT data. Using our approaches, we can analyze data in quantitative manner, and obtain physiological functions in living organism.

Targeted Application(s)/Industry

Pharmaceutical companies who are interested in using PET to evaluate efficacy of new drug. Companies which are related to medical informatics, medical equipments.

Cyclotron and Radioisotope Center
WATABE Hiroshi, Professor PhD

[pharmacological effects]

Functional and Molecular Imaging with Positron Emission Tomography (PET)

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Features

Using positron emission tomography (PET), we can measure the regional metabolism, perfusion and signal transmission between neurotransmitters and receptors in various organ systems of living humans and animals, such as the brain and heart. Recent technical developments have shown that the mind, or at least some parts of it, can be demonstrated by "imaging".

Targeted Application(s)/Industry

Our group has had considerable achievements in clinical research on drug effects and side effects, elucidation of underlying mechanism of alternative and complementary therapies, as well as exercise physiology.

Cyclotron and Radioisotope Center
TASHIRO Manabu, Professor doctor of medical sciences

[Pharmacology]

Molecular Imaging from Basic Research to Clinical Application

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Features

Molecular Imaging and its Application to Drug Development: Positron emission tomography (PET) comprises the administration of carbon-11- or fluorine-18-labeled tracers to human subjects in order to describe the concentration-time profile in body tissues targeted for treatment. As PET involves the administration of only microgram amounts of unlabeled drug, the potential risk to human subjects is very limited. Consequently, required preclinical safety testing is reduced as compared to conventional human studies.

Targeted Application(s)/Industry

PET molecular imaging studies are gaining increasing importance in clinical drug research, as they have the potential to shorten time-lines and cut costs along the critical path of drug development. We have developed several PET tracers for molecular imaging such as amyloid imaging and central nervous system drug research at Tohoku University, Japan. We will present the recent progress and strategy of "PET molecular imaging" in order to accelerate drug development.

Department of Pharmacology, Graduate School of Medicine, and Cyclotron and Radioisotope Center
YANAI Kazuhiko, Professor MD., PhD

[Phase]

X-Ray Phase Imaging for High-Sensitive Non-Destructive Testing

Features

Conventional X-ray imaging methods that rely on X-ray attenuation cannot generate clear contrast in the observation of low-density materials such as polymers consisting of low-Z elements. However, the sensitivity to the materials can be improved drastically by X-ray phase imaging that detects X-ray refraction caused by the materials. X-ray Talbot or Talbot-Lau interferometry consisting of X-ray transmission gratings is now constructed in laboratories for X-ray phase imaging. X-ray phase tomography is also realized, enabling high-sensitive three-dimensional observation.
X-ray phase imaging can be utilized for X-ray non-destructive testing of industrial products and baggage that cannot be checked conventionally.

Targeted Application(s)/Industry

We aim at appending a phase-contrast mode to micro-CT apparatuses and developing screening apparatuses in production lines.

Institute of Multidisciplinary Research for Advanced Materials
MOMOSE Atsushi, Professor Dr.

[Phase change]

Advanced die casting process computing with solidification phenomena

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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.

Targeted Application(s)/Industry

Automotive industry, Automotive suppliers, Foundry industry

Institute of Fluid Science
ISHIMOTO Jun, Professor Ph.D

[phase change memory]

Study on Phase Change Materials for PCRAM Application

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Features

Phase change random access memory (PCRAM) has attracted attention as next-generation non-volatile memories. A conventional PCM is Ge-Sb-Te which shows a fast crystallization speed and an excellent reversibility of phase transition. However, Ge-Sb-Te has a low crystallization temperature of about 150 ºC and a high melting temperature of over 600 ºC , which limits data retention and causes high power consumption, respectively.
We have developed a new phase change materials with high crystallization temperature and low melting point such as Ge-Cu-Te etc, which have high potential as PCRAM materials with high thermal stability and low power consumption (Fig.1,2).

Targeted Application(s)/Industry

Our materials are developed for PCRAM, DVD recording materials etc. We hope the collaboration research with companies which are interested in our developed phase change materials.

Graduate School of Engineering
SUTOU Yuji, Professor Doctor of Engineering

[PHD]

Development of PHD-Targeted Drug for Ischemic Injury

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All the living organisms generate energy from molecular oxygen to maintain their own lives. Once the concentration of oxygen falls down, life activity gets severely hampered and it could sometimes cause death. Typical examples that are related to local hypoxia are ischemic heart disease, stroke and kidney disease.
We focus on the function of prolyl hydroxylase (PHD) as a sensor to detect the hypoxia, and we are developing drugs to treat ischemic injury by controlling hypoxia.

Targeted Application(s)/Industry

Currently, we have several compounds that inhibit the PHD. We want to commercialize in conjunction with pharmaceutical companies in Japan and overseas, advancing our non-clinical studies for clinical development.

Division of Molecular Medicine and Therapy, United Centers for Advanced Research and Translational Medicine (ART), Graduate School of Medicine
MIYATA Toshio, Professor M.D., PhD

[Philosophy of Technology]

Philosophy of Science and Technology, Science and Technology Studies (STS)

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My research area is mainly phenomenology, philosophy of technology, and applied ethics (engineering ethics etc.). Technological Artifacts mediate human activities. So designing artifacts is in itself an ethical behavior. Analysing the ontological structure of the artifacts, describing the epistemological propcess of desingning activities, evaluating the social and ethical influence of artifacts are main issues in philosophy of technology. On the basis of such philosophical investigations, we can develope ethical studies concerining how engineerss, companies can recognize ethical issues in a networks of meanings , how they can make ethical decision among engineers and users.

Targeted Application(s)/Industry

I hope to conduct cooperative research on ethical education of engineers, as well as on human-machine interaction.

Graduate School of Arts and Letters
NAOE Kiyotaka, Professor PhD

[photoacoustic imaging]

Visualization of Biological Microstructure with High Frequency Ultrasound and Photoacoustic Imaging

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Features

"Features"
High-resolution imaging of biological tissue is non-invasively obtained with high frequency ultrasound. We have developed some ultrasound microscope systems which realized the resolution of 15-micron with 100 MHz and resolution to visualize a single cell with GHz range ultrasound. Ultrasonic imaging provides not only tissue morphology but also information on tissue elasticity. Recently, we have developed a real-time three-dimensional photoacoustic imaging system for visualization of subcutaneous micro vasculature and oxygen saturation.
"Targeted Application(s)/Industry"
High frequency ultrasound and photoacoustic imaging is repeatedly and non-invasively applied for early diagnosis of atherosclerosis, skin aging and tissue metabolism. They are useful for efficacy assessment of cosmetics and pharmaceuticals. High frequency ultrasound is also applied in the industrial areas where thickness measurement of opaque film or bilayer thin coating with the precision of 0.1 micron is required.

Targeted Application(s)/Industry

Biomedical Imaging Laboratory, Graduate School of Biomedical Engineering
SAIJO Yoshifumi, Professor PhD (Medicine)

[Photocatalysis]

Photo-Induced Characteristics of TiO2 Prepared by Anodic Oxidation

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Features

Ti anodizing technique has been offered for coloring the surface of Ti, and its mechanism is understood by light interference varied with the oxide thickness. A characteristic of this study is to control the crystallinity of the oxide, and its originality is to provide photo-induced characteristics to Ti and its alloys by controlling the electrochemical conditions differed from that of coloration technology. This study is aimed for controlling the surface of Ti by using a simple and easy, inexpensive technique and to fabricate high functional titanium materials.

Targeted Application(s)/Industry

Related to practical applications, it is considered as a use for environmental purification such as deodorization and water purification, biomaterial and antibacterial and structural titanium.

Institute for Materials Research
MASAHASHI Naoya, Professor Doctor of Engineering