Tohoku University. Research Profiles

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"V" Keywords - 19 Result(s)

V

 v

[vasohibin]

Regulation of Angiogenesis

Features
Angiogenesis, i.e., the formation of new capillaries, takes place under pathophysiological conditions including cancers, ocular neovascular diseases and atherosclerosis. Anti-angiogenic drugs have been developed, and are now in clinical use. However, because of side effects due to the damage to vascular endothelial cells, the development of anti-angiogenic drugs with different modalities is anticipated. We have isolated vasohibin-1 (VASH1) as a novel angiogenesis inhibitor expressed by endothelial cells (ECs), and vasohibin-2 (VASH2) as its homologue having pro-angiogenic activity.

Targeted Application(s)/Industry
We are planning to develop strategies of VASH1 potentiation and VASH2 inhibition. For VASH1 potentiation, we are planning to use recombinant VASH1 protein or search low molecular weight substances having VASH1 like activity. For VASH2 inhibition, we are succeeded in the development of neutralizing anti-human VASH2 monoclonal antibody.

Institute of Development, Aging and Cancer
SATO, Yasufumi, Professor M.D.,PhD

[vector beam]

Development of Vector Beam and its Application to Nanoimaging

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Features
Vector beams are very attractive because of their unique features such as small spot formation and strong longitudinal electric field near focus. We are developing a variety of generation methods of vector beams including Laguerre-Gaussian and Bessel-Gaussian beams and their higher order transverse modes. For instance, a smaller spot by approximately 30 % than that by a linearly polarized beam has been demonstrated and applied for nanoimaging.

Targeted Application(s)/Industry
Confocal scanning microscpy will benefit from vector beams as enhancement of spatial resolution. Otherwise, precision nano-processing will be possible. We are prepared to provide academic consultations to companies interested in our research.

Institute of Multidisciplinary Research for Advanced Materials
SATO, Shunichi, Professor Doctor of Engineering

[vibrational spectroscopy]

Development of nanometer-scale surface vibrational spectroscopy and its application to actual devices

In recent years, limitations of downscaling in silicon based device technologies have come to be well recognized, and alternatives based on new operation principles and/or novel materials are being extensively explored. It is also well recognized that developments of such alternatives have to be started from a few of tens nanometer scale in device sizes. Hence evaluations of materials with corresponding spatial resolution are required. Our research group utilized scanning tunneling microscopy as a tool to elucidate the photo-electronic properties of the materials in atomic scale. This study intends to develop a new vibrational spectroscopic method with the nanometer-scale resolution and to apply this method to actual device evaluations. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

Research Institute of Electrical Communication
UEHARA, Yoichi, Professor Doctor of Engineering

[visible light]

Lethal effects of blue light on insects

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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.

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

[volcano]

Role of Volatiles on Petit-Spot Volcanoes

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Features
The new kind of volcanoes, petit-spot, are located off NE Japan and Chile. They erupt at a submarine portion to be far from tectonic plate boundaries (e.g., mid-oceanic ridges and volcanic arcs) of the usual sites of volcanoes, earthquakes, and related geologic activity. The magmas have extremely high carbon dioxide and possibly originate from the base of tectonic plate.

Targeted Application(s)/Industry
The magma is squeezed upward and erupts in deep submarine environment wherever the tectonic plate flexes and fractures in the world. Collaborating work with business community would be required in order to search the submarine volcanoes and their related mines.

Center for Northeast Asian Studies
HIRANO, Naoto, Associate Professor PhD

 V

[Video processing]

Digital Signal Processing

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Features

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

[Video pulse]

Project “The Mirror Magical”: Remote and Non-Contact Extraction of Biological Information

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Features
We engage in development of a cyber-medical system, “The Mirror Magical” for taking a medical check-up anytime and anywhere by use of information and communication technology (ICT). We only have to stand still in front of the mirror to check our autonomic nervous function related to baroreflex on the basis of video signals capable of remote and non-contact measurement. Demonstration experiments have been held to verify the validity of the system in estimation of blood pressure variability and the effects of physical exercise.

Targeted Application(s)/Industry
We can conduct effective collaborative research using the system not only in medical and welfare fields but also for application to smartphones, automobiles, emotion recognition robots, security cameras, sports broadcast and so on.

Research Division on Advanced Information Technology, Cyberscience Center
YOSHIZAWA, Makoto, Professor Doctor of Engineering

[Video stream]

Internet video streams have identities like fingerprints

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Features
According to recent studies, each video that is streamed online has its own unique characteristic. The pattern of data that are sent through the network can vary from one encoding method to another and the change from scene to scene, which is a unique characteristic of each video. This research aims to identify video content in the network without looking at the data itself.

Targeted Application(s) / Industry
This research would be especially useful in preventing illegal distribution of television program such as illegal channel without violating user privacy. Another application would be to prevent confidential online meeting from leaking outside local enterprise network. In addition, it is also possible to investigate the circulation of a video content using method introduced by this work.

Graduate School of Information Sciences
KATO, Nei, Professor Doctor of Engineering

[Virtual Reality]

Three Dimensional (3D) Sound Sensing and Synthesis Technologies

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Features

We are developing high-definition 3D sound-filed acquisition sensing systems as well as 3D auditory displays based on our scientific knowledge of humans' 3D spatial hearing processes.
Sensing systems: (1) Sensing systems with two-microphone inputs which can enhance a target sound of a specified direction while preserving perceptual cues for binaural hearing, (2) Sensing system with a lot of microphones which can realize the precise and comprehensive acquisition of 3D sound field information.


Targeted Application(s)/Industry

Our technologies can be directly applied to high-definition communications, broadcasting, and comprehensive recording of sound spaces such as music performances in music halls as well as to sound-space surveillances, hearing-aid systems. Moreover, they may be applied in various applications in Kansei engineering, tele-existence, tele-works, and tele-medicine fields.

Research Institute of Electrical Communication
SUZUKI, Yoiti, Professor Doctor of Engineering

Interactive Content to Enrich Our Lives

(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.

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

[Virus]

Development of next-generation sterilization method by a plasma flow at atmospheric pressure

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Plasma sterilization has been developed as an alternative sterilization method due to its chemical activity, operation at low temperature and atmospheric pressure, low power consumption, low cost and safety. We have studied a mechanism of chemical species generation and transport in a plasma flow and, the sterilization efficacy and mechanism for several plasma sources at atmospheric pressure, such as a microwave plasma flow, a dielectric barrier discharge in a tube and a water vapor plasma flow. We already clarified that the damages of outer membrane and destructions of the cytoplasmic membrane of Escherichia coli by exposure to the microwave plasma flow. Fig. 1 shows the effect of plasma exposure on the E. coli. When the E. coli was exposed to the plasma, the height of the E. coli decreased and the potassium leakage of cytoplasmic material increased. For sterilization in a tube, we also clarified that an induced flow in the narrow tube by DBD transports chemical species and sterilize the whole inside surface of a tube as shown in Fig. 2. We hope to conduct collaborative research with a willing company for a practical application of this technology in industry.

Institute of Fluid Science
SATO, Takehiko, Professor Doctor of Engineering

[Visual Information Processing]

Hardware Development of Brain Computer and its Application to Visual Information Processing

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Features
Toward realizing a high-performance neuromorphic vision processing system, our research involves a neural network model of spatial perception based on motion-stereo vision and its implementation on a very large scale integrated circuit (VLSI). Important parameters for spatial perception such as time-to-contact, orientation, and the shortest distance to plane surfaces of a target object are recognized by using the model without knowing moving direction and velocity of the object. We have developed a VLSI capable of performing visual perception based on the model with low power consumption, reduced less than 1/100 compared with a commercial CPU.

Targeted Applications / Industry
Targeted applications include a drone flying autonomously equipped with collision avoidance system by visual perception. Targeted industry includes infrastructure inspection, agriculture, logistics, and so on.

Research Institute of Electrical Communication
SATO, Shigeo, Professor Ph.D (Information Science)

[Visual recognition]

Advanced Vision System with Less Calibration

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Features
The difficulties of introducing robot systems in production line are maintenance of environment and teaching of robot motion. Environ recognition and motion teaching using vision system will greatly improve the difficulties. However, calibration of vision-robot system is tedious and troublesome. Feedback control using vision sensor information will allow robustness against environment and teach by showing. This technique is called visual servo.

Targeted Application(s)/Industry
Visual servo will allow flexible camera setting, calibration-less system setting, and easy teaching.

Graduate School of Information Sciences
HASHIMOTO, Koichi, Professor Doctor of Engineering

[Visual servo]

Advanced Vision System with Less Calibration

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Features
The difficulties of introducing robot systems in production line are maintenance of environment and teaching of robot motion. Environ recognition and motion teaching using vision system will greatly improve the difficulties. However, calibration of vision-robot system is tedious and troublesome. Feedback control using vision sensor information will allow robustness against environment and teach by showing. This technique is called visual servo.

Targeted Application(s)/Industry
Visual servo will allow flexible camera setting, calibration-less system setting, and easy teaching.

Graduate School of Information Sciences
HASHIMOTO, Koichi, Professor Doctor of Engineering

[Vitamin K]

Prevention of Life Style-Related Diseases by Functional Foods and Effective Nutrients Supplementation

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Features
Our basic mission is to reduce medical expenses in our country that will become super-aging society. We have some basic data that showed anti-aging (and possibly cancer prevention) method by functional foods and effective nutrients ingestions such as biotin, vitamin K, and zinc. Order-made suggestion to individuals in food components or nutrients ingestion through the studies concerning about taste receptor SNP analysis by our lab are also included in our studies.

Targeted Application(s)/Industry
Purposes and usefulness: Foods industries for elderly people, clinical laboratory and industries might be interested in our studies, and it will affect basic farm industry too through higher utilization of rice and other major staple foods productions.

Laboratory of Nutirition, Graduate School of Agricultural Science
KOMAI Michio, Professor Ph.D.

[Vocabulary]

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.

English Vocabulary and Word-Formation: Synchronic and Diachronic Approaches

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Features
My main research fields are English vocabulary, word-formation, and morphology. English is unique in possessing very rich amount of high-quality corpora and also in functioning the first ‘world language' in history, engendering dialects of non-native speakers all over the world. Using these original features as our data source allows us to watch and experience the process of how words and morphemes appear, grow, mature, and disappear.

Targeted Application(s)/Industry
My research could be useful for those interested in i) Construction and development of English dictionaries and corpora, ii) machine translation and language processing, iii) English education, and iv) coinages and naming in English

Graduate School of Information Sciences
NAGANO, Akiko, Associate Professor

[Vortex state]

Electrical Detection of Magnetization Process in Nano-Scale Ferromagnet

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Features
A nano-scale ferromagnet has onion and vortex states in its magnetization. Especially the vortex state is important since the stray field from the ferromagnet is suppressed. It is expected to apply it to high density non-volatile memory because of two different magnetized orientations, clock-wise and counter clock-wise directions. We have experimentally and theoretically confirmed that the chirality of the vortex state can be detected with an electrical way (Fig. 1). Furthermore, by putting a single nano-scale ferromagnet on top of a semiconductor Hall bar, we have demonstrated that the magnetization reversal process can be electrically detected with a very high sensitivity even without using SQUID (Fig. 2).

Targeted Application(s)/Industry
As an example of applications, the method is applicable to magnetic sensor with high sensitivity and high density non-volatile memory. We are prepared to provide academic consultations to companies interested in our research.

Department of Materials Science, Graduate School of Engineering
NITTA, Junsaku, Professor Doctor of Engineering

[VSAT]

Advanced Wireless Information Technology

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Features

Toward the realization of a ubiquitous and broad-band wireless network, we are actively engaged in the research work on dependable and low power consumption advanced wireless IT. We cover the whole technical fields from the lower to higher layers, i.e., signal processing, RF/Mixed signal device, antenna, MODEM and network technologies.As the studies on signal processing, RF/Mixed signal device and antenna technologies, we are developing RF/Millimeter-wave RF CMOS IC's, antenna integrated 3-dimensional system in package (SiP) transceiver modules, digital/RF mixed signal IC's.


Targeted Application(s)/Industry

If you are interested in a collaborative research work on above topics, please contact us via e-mail.

Research Institute of Electrical Communication
SUEMATSU, Noriharu, Professor