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Toyama-shi, Japan

Maeda Y.,Niigata University | Konishi T.,Toyama College
Assistive Technology Research Series

This paper describes a series of trials based on mathematical information engineering that were designed to enable assistive technologies to help with the travel and mobility of the visually impaired. In order for technology to be of assistance to travel, two different concepts are necessary, i.e., to assist travel performance and to assist travel planning. In the former case, we developed a GPS-based "travel assist" system (TAS) so that an adaptive fuzzy inference neural network could be employed to stabilize positional guidance. In many cities and towns in Japan it is often the case that an area of buildings surrounding a particular street rather than the street itself assumes the identity of a recognized landmark. Therefore, GPS measurements acquired by a pedestrian walking on such a street are likely to randomly output landmarks on both sides of the street. The adaptive fuzzy inference neural network enabled the TAS to guide the user to just the landmark that was required by the pedestrian. In the latter case, we developed an AHP-based "plan assist" system (PAS), whereby the system assists in the self-determination of the route selection. These concepts are of special importance to visually impaired persons, even those with guide helpers, because such self-determination might enhance their efficacy when traveling, and, as a result, might add to the self-sufficiency of the visually impaired. © 2011 The authors and IOS Press. All rights reserved. Source

Murano Y.,The Nisshin OilliO Group Ltd. | Funabashi T.,The Nisshin OilliO Group Ltd. | Takeuchi H.,Toyama College | Matsuo T.,Kagawa University
Journal of Oleo Science

We previously reported that the feeding of soybean phospholipids to fish increased the storage stability of n-3 polyunsaturated fatty acids (PUFA)-rich fish fillets. In this study, we examined the storage stability of lipids extracted from fish fed a diet containing soybean phospholipids and fish oil. Rainbow trout were divided into two groups, and were fed an either 2.5% soybean phospholipids (test) or no phospholipids (control) containing diet for 4 weeks. Lipids were extracted from fish fillets after the feeding period, and were subjected to an oxidation test. Lipids extracted from the fillets of fish in the test group exhibited lower values of oxygen absorption than those in the control group, and the degradation of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) was inhibited. Higher percentages of DHA and EPA were bound to phosphatidylcholine and phosphatidylethanolamine in the extracted lipids in the test group than in the control group. These results indicate that the oxidative stability of lipids extracted from fish fed soybean phospholipids is high, and that the higher percentages of DHA and EPA in PC and PE may have resulted in the higher stability of the lipids extracted from fish fillet. © 2010 by Japan Oil Chemists' Society. Source

Fukuda M.,Mukogawa Womens University | Takagi N.,Toyama College | Kobayashi M.,Mukogawa Womens University | Tsuzuki K.,MARUSAN AI Co.
Food Science and Technology Research

Polyamines are important constituents of all mammalian cells. We previously found that polyamines in soy yogurt, a mixture of fermented soymilk and okara, absorbed easily in the small intestine of growing rats, but the polyamine level in plasma scarcely increased. The level of polyamine in the body tends to decrease with age. In the present study, we investigated changes in polyamine levels in the intestines and plasma of adult rats to clarify the effect of soy yogurt in supplying polyamine to the plasma in adult rats. The polyamine levels in the intestine and plasma of adult rats increased significantly after ingestion of soy yogurt. It was found that soy yogurt is useful for the recovery of polyamine in adult rats. Source

Nishida T.,Numazu College | Mizutani J.,Toyama College | Mutoh Y.,Nagaoka University of Technology | Matsuda S.,Numazu College | And 2 more authors.
Zairyo/Journal of the Society of Materials Science, Japan

Plain fatigue and fretting fatigue strength tests of aluminum alloy (JIS A7N01) specimens with surface treatments (fine particle peening, burnishing and solid lubricant film) were carried out using an electromagnetic fatigue testing machine. Fretting fatigue limit of untreated specimen was significantly low, which was about one fourth of the plain fatigue strength. Fretting fatigue strength of the specimen surface-treated with fine particle peening was slightly higher than that of the untreated specimen. The fretting fatigue strengths for solid lubricant film and burnishing have been remarkably increased compared to that of the untreated specimen. However, the fatigue limit for solid lubricant film was almost same as that of untreated specimen. From the in-situ SEM observation of fretting fatigue process, it was found that burnishing with smooth surface and high compressive residual stress effectively delayed the fretting fatigue crack nucleation and crack propagation. It was also found that solid lubricant film with low frictional coefficient effectively delayed them. © 2015 The Society of Materials Science, Japan. Source

Ochiai M.,Kagawa University | Fujii K.,Kagawa University | Takeuchi H.,Toyama College | Matsuo T.,Kagawa University
Journal of Oleo Science

Dietary intake of high trans-fatty acids (TFAs) is well known to increase the risk of cardiovascular diseases. However, few reports demonstrated definitive relationships between dietary TFAs and obesity. In addition, the difference in the gastrointestinal absorption rate of TFAs containing oil from that of cis-FAs containing oil was not taken into consideration in many rat studies. In experiment A, we investigated the difference in the apparent absorption rate of TFAs containing oil from control oil. Hydrogenated rapeseed oil and a mixture of camellia oil and tristearin (90:10 [w/w]) were used as TFA-containing test oil and control oil, respectively. Ten Wistar rats were divided into the control group or TFA group, and fed the respective diet containing the control oil or the test oil for 1 week. The apparent absorption rates of these oils were measured by fecal fat excretion rate and dietary fat intake. The results showed a significantly lower gastrointestinal apparent absorption rate of the test oil (93.1%) than that of the control oil (96.2%). In consideration of the apparent absorption rate of these dietary oils, the effects of dietary TFAs on body fat accumulation and energy metabolism were investigated in rats. Twenty-eight Wistar rats were divided into the control group or the TFA group. Each group received an isoenergetic diet containing the control oil or the test oil for 8 weeks. Pre-and postprandial metabolic rates were measured between weeks 7 and 8. The test oil-based diet did not significantly influence body weight gain, fat accumulation, and metabolic rate. In contrast, liver weight, hepatic triglyceride content, and serum non-high density lipoprotein (HDL)-cholesterol (CHO)/HDL-CHO ratio were significantly higher in the TFA group than in the control group. In conclusion, these findings suggest that dietary TFAs did not influence body fat accumulation but increased the levels of risk markers of cardiovascular diseases. © 2013 by Japan Oil Chemists' Society. Source

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