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Mohri K.,Nagoya Industrial Science Research Institute NISRI | Mohri K.,Aichi Micro Intelligent Co. | Fukushima M.,Foundation for Biomedical Research and Innovation | Mohri Y.,Meijo University | Mohri Yu.,Meijo University
Progress in Electromagnetics Research Symposium | Year: 2010

We constructed an extremely sensitive magnetic sensor having one pico-Tesla res- olution using single amorphous wire core CMOS IC magneto-impedance sensor with dc selective negative feedback circuitry ("pT-MI sensor") for detection of the water magnetization. The water magnetization M is measured using a pendulum oscillation sample magnetic measure- ment method, in which a water sample bottle of 100 ml oscillates as a pendulum with 1.5 Hz in front of the pT-MI sensor head at 50mm apart position showing 3 Hz magnetic field sinusoidal wave. Sample water (purified water and tap water) with 6 Hz, 10 μT magnetic field application through more than 1 hour showed a clear 3 Hz sinusoidal wave output of around 1 nT amplitude (M = 2:3 pT) during at least 30 min. and not for samples without ac magnetic field application and also magnet dc field application. Mechanism of water magnetization has been proposed with an assumption of the cyclotron resonance of the water cluster (H 3O+(H2O)n) which activates the proton transport in water under the geo-magnetic field ("magneto-protonics").


Mohri K.,Nagoya Industrial Science Research Institute NISRI | Mohri K.,Aichi Micro Intelligent Co. | Nakamura Y.,Yamazaki Mazak Optonics Co. | Uchiyama T.,Nagoya University | And 3 more authors.
Progress in Electromagnetics Research Symposium | Year: 2010

A new sensitive measurement method for the human micro-vibration (MV) is presented using a pico-Tesla resolution magneto-impedance sensor (pT-MI sensor). Various MV such as for the spinal-cord, the heart beat and following blood flow pulsation, and muscle tremors are stably detected by touching the skin position directly or indirectly via any solid transmission media to the sensor head which is dynamically rotated with more than 1.8 micro angular degree in the geomagnetic field. A blood flow promotion effect is detected using the MV sensing at the shoulder and the back of subjects after application of 6Hz, 1μT pulse magnetic field in 10min.


Mohri K.,Nagoya Industrial Science Research Institute NISRI | Uchiyama T.,Nagoya University | Yamada M.,Meijo University | Mohri Y.,YAMAZAKI MAZAK Corporation | And 3 more authors.
IEEE Transactions on Magnetics | Year: 2012

Reliable evaluation for the arousal effect of magnetized olivine-crushed-stone-crammed vinyl pipe set on an elderly car driver's spine has been carried out measuring a four-points electroencephalogram using driving simulators considering a defined arousal index β/(δ+θ). A sintered-magnetized-spherical-particles-crammed pipe is developed for realization of periodically pulse distributed surface magnetic field train matching with the magneto-protonics principle. Transition of the magnetic field time series generated from the spine with application of the physiological magnetic stimulation have also been measured using the amorphous wire and CMOS IC based pico-Tesla resolution magneto-impedance sensor, in which existence of alternative areas of cooperativeness and anti-cooperativeness for transition of the arousal index each other along the spine length direction is suggested. A special point on the central spine generating a large bio magnetic field of around 10 nT amplitude as well as corresponding pit of the stomach position was found. © 2012 IEEE.


Mohri K.,Nagoya Industrial Science Research Institute NISRI | Uchiyama T.,Nagoya University | Yamada M.,Meijo University | Watanabe T.,Meijo University | And 3 more authors.
IEEE Transactions on Magnetics | Year: 2011

A new method for the prevention of drowsiness of eldery people during car driving is presented, in which a distributed-pulse magnetic field generated from a magnetized fayalite crushed stone crammed pipe is applied to their spine position. The effect for arousal is evaluated by measuring the subject's back head magneto-encephalogram fast Fourier transform frequency spectra using a pico-Tesla resolution magnetoimpedance sensor and by using an electro-encephalogram meter before and after magnetic stimulation. The effect for arousal during car driving is evaluated by using a driving simulator to measure the car body deflection from a driving road line and observation of the driver's sleepiness. Mechanisms for the arousal effect are discussed with the magneto-protonics principle on the basis of the arousal physiology and measurement of the magnetization of a physiological saline solution before and after application of the magnetic pipe. © 2011 IEEE.


Mohri Y.,Yamazaki Mazak Co. | Yamada M.,Meijo University | Endo K.,Meijo University | Suzuki T.,Meijo University | Mohri K.,Nagoya Industrial Science Research Institute NISRI
Progress in Electromagnetics Research Symposium | Year: 2012

Newly found arousal effect with application of a physiological magnetic stimulation (PMS) using a magnetized fayalite crashed stone crammed vinyl pipe put on the spine position for elder persons preventing drowsiness during car driving is evaluated measuring four-point electroencephalogram (EEG) at operation of the driving simulator. Both the ratio of the β wave component and the δ+θ wave components (β=(δ+θ); arousal index) in a FFT frequency spectrum of the measured EEG and a cross correlation among four point EEG remarkably increased using the spine PMS.


Mohri K.,Nagoya Industrial Science Research Institute NISRI | Inden Y.,Nagoya University | Yamada M.,Meijo University | Mohri Y.,Yamazaki Mazak Co.
Progress in Electromagnetics Research Symposium | Year: 2012

A remarkable health recovery effect of the physiological magnetic stimulation (PMS) for an elder person suffered from the angina pectoris is presented, in which four conditions out of five indices of the metabolic syndrome were normalized through two months. The PMS is carried out using a magnetized fayalite crushed stones crammed vinyl pipe with vibrating on the immunity source area of the thymus, the pit of the stomach, and the intestinal flora ("san jiao" in Chinese medicine). Mechanisms for the PMS effect are discussed with the magneto- protonics principle considering transition of the measured electro-encephalogram (EEG) and the electro-cardiogram (ECG) before and during the PMS.


Mohri K.,Nagoya Industrial Science Research Institute NISRI | Sasaki M.,Shinchita Concrete Kogyo Corporation | Uemura T.,Tsuruta Sekizai Corporation | Mohri Y.,MI Institute | And 2 more authors.
Progress in Electromagnetics Research Symposium | Year: 2013

A new method for production of the high-strength concrete using the magnetized olivine stone as the aggregate is presented, which revealed a compressive strength of around 85N/mm2 at 13 weeks measurement. The alternative pulse train distributed magnetic field generated from the high strength concrete increased its density and strength with promotion of the solidification due to a possible inverse magnetostrictive effect of the magnetite, which promoted further the concrete solidification (positive feedback). An example of growth promotion of a plant on the concrete board is shown with the bio-activation magnetic field due to the magnetoprotonics principle. The electromagnetic microwave interception efficiency of the high-strength mortar is more than 2 times higher than that of non-magnetized mortar. Copyright © 2013 The Electromagnetics Academy.


Mohri Y.,MI Institute | Yamada M.,Meijo University | Sakai K.,Meijo University | Kato W.,Meijo University | And 2 more authors.
Progress in Electromagnetics Research Symposium | Year: 2013

A new effective and safe arousal method is presented for car drivers with application of a physiological magnetic stimulation (PMS) to their pit of the stomach using a magnetic necklace-pendant made of magnetized olivine sintered particles. A relatively large magnetic field generated from the pit of the stomach was detected using the pico-Tesla resolution MI magnetic sensor, which is remarkably changed in the time series pattern with application of the PMS. The arousal effect was evaluated considering a transition of the defined arousal index of (α+β)=(δ+θ) for detected four points electroencephalogram (EEG) for 8 subjects before and after application of the PMS on a driving simulator. Arousal effect for 15 subjects with the spine PMS was also evaluated. Copyright © 2013 The Electromagnetics Academy.


Uchiyama T.,Nagoya University | Mohri K.,Nagoya Industrial Science Research Institute NISRI | Honkura Y.,Aichi Steel | Panina L.V.,University of Plymouth
IEEE Transactions on Magnetics | Year: 2012

We have developed sensitive micro magnetic sensors referred to as MI sensors based on magneto-impedance effect in amorphous wires and CMOS IC electronic circuits providing a sharp-pulse excitation. Micro sized MI-HIC chips have been in mass production of electronic compasses by Aichi Steel Corp. since 2002 for mobile phones and since 2010 for smart phones. Recently we have realized pico-Tesla (10 -8 Oe) resolution for micro MI sensors making use of ultralow intrinsic magnetic noise in amorphous wires with the pulse magnetoimpedance effect. The pico-Tesla MI sensor is useful especially for bio-magnetic measurements without any magnetic shielding at room temperature. In order to avoid a risk of traffic accident due to noise reduction electric vehicles, an alert system for the pedestrians having a smart phone would be useful, if pico-Tesla MI sensor were built in the smart phones. © 2012 IEEE.


Uchiyama T.,Nagoya University | Mohri K.,Nagoya Industrial Science Research Institute NISRI | Nakayama S.,Nagoya University
IEEE Transactions on Magnetics | Year: 2011

New measured results of spontaneous oscillatory bio-magnetic field generated from preparations of guinea-pig smooth muscle tissue are presented in this paper using the pico-Tesla MI sensor. It is confirmed that the changes in the bio-magnetic field activity precisely synchronized with extracellular electric activity for stomach musculature of the guinea-pig. It is, however, noteworthy that these two activities provide different biological information. A phase lag of around 2 s of the magnetic signal pulse against the extracellular electric signal pulse is newly found. It is also shown that Ca2+ channel activity of the smooth muscle tissue (taenia caeci) can be evaluated using the MI sensor. Both electric and magnetic activities depend on the functionality of the living tissues. Therefore, the pico-Tesla MI sensor has the potential for non-invasive detection use in wide range of biology and medicine, including non-invasive evaluation use of the stem cells development. © 2011 IEEE.

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