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Scientists at Tohoku University have developed a system using information technology to augment and enhance the capabilities of canine search and rescue (SAR) teams. Outfitted with special suits, these cyber-enhanced SAR dogs can transmit information about disaster sites and victims to their handlers and rescue workers. The suits—which fit both large and middle-size SAR dogs—are equipped with global positioning system (GPS) and inertial measurement unit (IMU) sensors, which can track the dog's motions and location. There is also a camera that transmits what the dog is seeing. This is especially useful in assessing the condition of victims and accessing remote parts of disaster sites. Handlers and rescue workers can receive and map the information online using their computers or hand-held tablets. The effectiveness of the canine SAR teams depends on the experience of the handlers, as well as their ability to analyze and utilize information provided by their canine partners. It is hoped that the cyber-enhanced canine suits will promote a new field integrating human, animal and robot technologies. Located on the ancient site of Aoba Castle, Tohoku University was established as Japan's third national university in 1907. Inventions born at Tohoku University include the KS and NKS steels, the Yagi-Uda antenna, fiber optics, and perpendicular magnetic recording.

Takakuwa O.,Aoba | Mano Y.,Aoba | Soyama H.,Aoba
Advanced Materials Research | Year: 2014

The objective of this study is to evaluate the effect of hydrogen on the micro- and macro-strain of austenitic stainless steel using X-ray diffraction. When hydrogen is trapped in lattice sites, it can affect both the micro- and macro-strain. The micro-strain was evaluated through fitting profiles to measured X-ray diffraction profile using a fundamental parameter method. The macro-strain, i.e., the residual stress, was evaluated by a 2D method using a two-dimensional PSPC. The experimental samples were charged with hydrogen by a cathodic charging method. The results revealed that the induced residual stress was equi-biaxial and compressive, and that the micro-strain increased. Both of these varied rapidly with increasing hydrogen charging time. Saturation occurred at a compressive stress of around 130 MPa. On reaching saturation, the hydrogen charging was terminated and desorption of hydrogen began at room temperature. Then, the strains decreased and the compressive stress reverted, ultimately, to a tensile stress of 180 MPa. Martensitic transformation occurred due to hydrogen charging and this had a significant effect on the X-ray diffraction profile. © (2014) Trans Tech Publications, Switzerland. Source

Ota M.,Aoba | Iriuchijima I.,Aoba | Nomura K.,Aoba | Sato Y.,Aoba | Inomata H.,Aoba
Nippon Shokuhin Kagaku Kogaku Kaishi | Year: 2010

Supercritical CO2 extraction was carried out using finely-milled powder of Unshu Citrus peels with approximately 50μm at 333 and 353 K and at CO2 densities of 600, 700 and 800 kg m-3. Extracts were analyzed by HPLC. Polymethoxyflavones and carotenes were detected but chlorophylls were not detected in each experimental condition. A dynamic extraction model was applied to the obtained data using solubility as a parameter and extraction curves of solutes in the peels were produced successfully. Solubilities of β-carotene, α-carotene, nobiletin and tangeletin were estimated by solubility being treated as a single fitting parameter in the dynamic extraction model. Solubility of β-carotene nearly corresponds with the value in literature (1O-8∼10-7) and this showed the technique of estimation would be feasible for materials being unavailable. Solubility of a-carotene was found to be very close to that of β-carotene and solubilities of nobiletin and tangeletin were estimated to be double-digit higher, from 10-6 to 10-5 in the experimental conditions. Source

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