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In VitroAntioxidative Activity and Antihypertensive Activity of Soy Sauce Cake Derived from the Manufacturing of Japanese Style Fermented Soy Sauce

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Food and Nutrition Sciences 2012年第8期3卷 1118-1127页

作者： takeshi nagai Yasuhiro Tanoue Norihisa Kai Nobutaka Suzuki Nagoya Research Institute Aichi 4701131 Japan National Fisheries University Yamaguchi 7596595 Japan Yamagata University Yamagata 9978555 Japan

As the manufacture of soy sauce produces a large quantity of soy sauce cake as one of food processing waste, it is necessary to search for possible ways for their utilization. Chemical composition of soy sauce cake was analyzed to use as a material of high-value functional ingredients. The results showed that soy sauce cake could be potentially used as functional ingredients rich in proteins, with high antioxidative activitiy, free radical scavenging activity, and antihypertensive activity. Based on their IC50 values, the hydrolysates from soy sauce cake were more significantly effective against superoxide anion radicals and ACE, compared with hydroxyl radicals and DPPH radicals. The present study indicates that a large amount of soy sauce cake can be used as source of proteins with good antioxidative activity, free radical scavenging activity, and antihypertensive activity. The utilization of soy sauce cake may be also to contribute to reduce food processing wastes and to resolve an environmental problem.

关键词： Soy Sauce Cake Food Processing Waste Utilization Antioxidative Activity Scavenging Activity Antihypertensive Activity

Collagen from Tendon of Yezo Sika Deer (Cervus nippon yesoensis) as By-Product

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Food and Nutrition Sciences 2012年第1期3卷 72-79页

作者： takeshi nagai Nobutaka Suzuki Yasuhiro Tanoue Norihisa Kai 不详

Collagen from tendon of Yezo sika deer was prepared by limited pepsin digestion. The yield of collagen was very high;35.7% on the basis of lyophilized dry weight. The secondary structure of this collagen was different from that of porcine skin by ATR-FTIR analysis, although it was the same characteristics, e.g. SDS-PAGE, subunit composition, ther-mal behavior, as porcine collagen. Since taking up a problem of bovine spongiform encephalopathy infection in land animals such as calf or bovine, collagen from aquatic materials has been used in various industries. However, the present study indicates that tendon of Yezo sika deer as by-product of meat industry will have potential as an important collagen source for use in the foods, cosmetics, and medical fields.

关键词： Collagen Yezo Sika Deer Tendon By-Product Yield Attenuated Total Reflectance-Fourier Transform Infrared (ATR-FTIR) Analysis

Functional Property of Honey from Echium vulgare

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Food and Nutrition Sciences 2012年第5期3卷 614-620页

作者： takeshi nagai Yasuhiro Tanoue Norihisa Kai Nobutaka Suzuki Nagoya Research Institute Aichi Japan National Fisheries University Yamaguchi Japan Yamagata University Yamagata Japan

Chemical property of honey from Echium vulgare was investigated. In comparison with other honey species, the con-tents of total phenolic compounds and total flavonoids were the highest. α-Amylase activity was also extremely high: about three to nine hundred times as much as those of other honey species. The antioxidative activity of honey was investigated using four different methods. Honey from E. vulgare showed the best performance in inhibiting lipid peroxidation and scavenging superoxide anion radicals, hydroxyl radicals, and DPPH radicals. Moreover, it exhibited stronger inhibition activity of ACE. It is known that higher antioxidative activity and scavenging activity against active oxygen species in honey species related to their colour. In the present study, however, it suggests that the phenolics in honey from E. vulgare with yellow gold colour might be the major active component responsible for the strong antioxidative activity and radical scavenging activity.

关键词： Echium vulgare Honey Total Phenolic Compound Amylase Activity Antioxidative Activity Antihypertensive Activity

Spectral vegetation indices as the indicator of canopy photosynthetic productivity in a deciduous broadleaf forest

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Journal of Plant Ecology 2013年第5期6卷 393-407页

作者： Hiroyuki Muraoka Hibiki M.Noda Shin nagai takeshi Motohka Taku M.Saitoh Kenlo N.Nasahara Nobuko Saigusa Institute for Basin Ecosystem Studies Gifu University1-1 YanagidoGifu501-1193 Japan Faculty of Life and Environment Sciences University of TsukubaTsukuba305-8572 Japan Research Institute for Global Change Japan Agency for Marine-Earth Science and Technology(JAMSTEC)Yokohama236-0001 Japan Earth Observation Research Center Japan Aerospace Exploration AgencyTsukuba305-8505 Japan Center for Global Environmental Research National Institute for Environmental StudiesTsukuba205-8506 Japan

Aims Understanding of the ecophysiological dynamics of forest canopy photosynthesis and its spatial and temporal scaling is crucial for revealing ecological response to climate *** observations and analyses of plant ecophysiology and optical remote sensing would enable us to achieve these *** order to examine the utility of spectral vegetation indices(VIs)for assessing ecosystem-level photosynthesis,we investigated the relationships between canopy-scale photosynthetic productivity and canopy spectral reflectance over seasons for 5 years in a cool,temperate deciduous broadleaf forest at‘Takayama’super site in central *** Daily photosynthetic capacity was assessed by in situ canopy leaf area index(LAI),(LAI×Vcmax[single-leaf photosynthetic capacity]),and the daily maximum rate of gross primary production(GPPmax)was estimated by an ecosystem carbon cycle *** examined five VIs:normalized difference vegetation index(NDVI),enhanced vegetation index(EVI),green–red vegetation index(GRVI),chlorophyll index(CI)and canopy chlorophyll index(CCI),which were obtained by the in situ measurements of canopy spectral *** Findings Our in situ observation of leaf and canopy characteristics,which were analyzed by an ecosystem carbon cycling model,revealed that their phenological changes are responsible for seasonal and interannual variations in canopy *** correlations were found between the five VIs and canopy photosynthetic capacity over the seasons and years;four of the VIs showed hysteresis-type relationships and only CCI showed rather linear *** the VIs examined,we applied EVI–GPPmax relationship to EVI data obtained by Moderate Resolution Imaging Spectroradiometer to estimate the temporal and spatial variation in GPPmax over central *** findings would improve the accuracy of satellite-based estimate of forest photosynthetic productivity in fine spatial and temporal resolutions,which are

关键词： canopy photosynthesis deciduous broadleaf forest phenology remote sensing vegetation index

Reinforcing Effect of CFRP Strand Sheets on Steel Members

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Journal of Physical Science and Application 2011年第3期1卷 155-162页

作者： Yuya Hidekuma Akira Kobayashi takeshi Miyashita Masatsugu nagai Nippon Steel Materials Co. Ltd Composites Company Tokyo Japan Top Runner Incubation Center for Academia-Industry Fusion Nagaoka University of Technology Niigata Japan Department of Civil and Environmental Engineering Nagaoka University of Technology Niigata Japan

The steel structure is corroded by various mechanisms, and thus its performance decreases. As a repairing method of the corroded steel member, a method in which carbon fiber sheets is bonded to the steel member with glue has been studied. In recent years, as more efficient repairing method using FRP materials, the strand sheet bonding which has high mass per unit area has been developed. The purpose of this study is to propose the repairing method for corroded steel member by using the strand sheets. In order to confirm a reinforcing effect, the tensile and flexural tests using steel plates and girders reinforced with strand sheets were performed. Test results showed effectiveness of strand sheets for the reinforcement of the steel members.

关键词： CFRP strand sheet steel corrosion reinforcement.

Proposition of a New Type of Jointless System For Existing Concrete Bridges

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Journal of Physical Science and Application 2014年第2期4卷 84-89页

作者： Yuichi Ishikawa Minobu Aoyama Masami Kuroyanagi Masatugu nagai takeshi Miyashita Kanazawa Branch Central Nippon Highway Engineering Nagoya Co. Ltd. Kanazawa 920-0025 Japan Nagoya Branch Central Nippon Expressway Co. Ltd. Nagoya 460-0003 Japan Department of Civil and Environmental Engineering Nagaoka University of Technology Nagaoka 940-2188 Japan

Since 1990s, the use of deicing salts （i.e., chlorides） has dramatically increased in areas with heavy snowfall in Japan. As a result, the water mixed with salts has accelerated the damage of the reinforced concrete （hereafter, RC） structures. Recently conducted inspection results of RC bridges have reported that many of the damages or deteriorations are observed at the girder ends and abutments This is caused from the water leakage due to the aged expansion joints. In general, the cost for repairing the damaged RC structures is much higher than that for renewing the expansion joints. Therefore, to prevent these damages, we developed a new highly durable jointless system, named RC plug joint, for existing RC bridges with a bridge length less than 40 meters. The RC plug joint connects the abutment＇s backwall to the superstructure＇s deck using reinforcing steel bars and fiber reinforced concrete. The newly developed RC plug joint system can prevent water leakage and allow for a smooth ride of vehicles at the joint. This paper will explore and discuss the development of the RC plug joint, analysis of conducted investigations, and future installation methods.

关键词： Jointless system RC plug joint field investigation leakage assessment travelling performance

Synthesis of High-quality Crystalline Materials by Containerless Solidification in Microgravity

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Synthesis of High-quality Crystalline Materials by Container...

Bonding Characteristics and Flexural Stiffening Effect of Carbon Fibre Reinforced Plastics Strand Sheets Bonded to Steel Beams

5th China-Japan Workshop on Microgravity Sciences

作者： takeshi OKUTANI Yoshinori NAKATA Hideaki nagai Takashi TSURUE Microgravity Materials Laboratory National Institute of Advanced Industrial Science and Technology 2- 17-2-1 Tsukisamu-higashi Toyohira-ku Sappro 062-8517 Japan

The advantages of working in a microgravity(μg) environment are the lack of gas or liquid mass transfer by convection, the clearly apparent surface tension of liquids, the homogeneous mixing of substances with different specific gravity, and ease of containerless processing. To synthesize high-quality crystalline materials such as semiconductors using a μg environment.

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Journal of Civil Engineering and Architecture 2015年第2期9卷 207-212页

作者： Masatsugu nagai Yuya Hidekuma takeshi Miyashita Yusuke Okuyama Akiya Kudo Akira Kobayashi Department of Civil and Environmental Engineering Nagaoka University of Technology Niigata 940-2188 Japan Infrastructure Use Division Composites Company Nippon Steel & Sumikin Materials Co. Ltd Tokyo 103-0024 Japan Department of Civil Engineering National Institute of Technology Nagano College Nagano 381-8550 Japan West Tokyo Operation Bureau Metroportitan Expressway Co. Ltd Tokyo 102-0093 Japan

Corrosion of steel structures is unavoidable and the structural performance decreases dramatically due to the corrosion. As a repairing method for corroded steel members, bonding carbon fiber sheets with resin had been developed. The purpose of this study is to propose the flexural strengthening method for steel members by using CFRP （carbon fiber reinforced polymer） strand sheets. In order to clarify the stiffening effect and the debonding characteristics of CFRP strand sheets, and to optimize the strengthening design specifications, the flexural tests using high tension steel beams strengthened with CFRP strand sheets are performed. Two cases of experiments are carried out. In Experiment 1, the result from previous research is reflected in the strengthening design. Moreover in Experiment 2, the debonding characteristics obtained from Experiment 1 are reflected. As a result, it was clarified that CFRP strand sheets have stiffening effect equivalent to the theoretical value and its debonding property is practically high enough when FRP （fiber reinforcement polymer） sheets have an appropriate bonding length.

关键词： CFRP strand sheets corrosion debonding flexural strengthening steel members.

Microstructure,hardening and deuterium retention in CVD tungsten irradiated with neutrons at temperatures of defect recovery stagesⅡandⅢ

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Tungsten 2022年第3期4卷 248-260页

作者： Xiao-Ou Yi Tatsuya Kuwabara Vladimir KhAlimov Yu-Feng Du Wen-Tuo Han Ping-Ping Liu Bin-You Yan Jiu-Peng Song Kenta Yoshida takeshi Toyama Fa-Rong Wan Somei Ohnuki Yuji Hatano Yasuyoshi nagai School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China Graduate School of Engineering Nagoya UniversityFuro-choChikusa-kuNagoya464-8063Japan Frumkin Institute of Physical Chemistry and Electrochemistry Russian Academy of SciencesMoscow119071Russia Institute for Materials Research Tohoku UniversityNarita-cho 2145-2OaraiIbaraki311-1313Japan Xiamen Tungsten Co.Ltd. Xiamen361021China School of Materials Science and Engineering Xihua UniversityChengdu610039China Hydrogen Isotope Research Center University of ToyamaToyama930-8555Japan

Samples of ultra-high-purity tungsten prepared using chemical vapour deposition(CVD)technique were irradiated with neutrons at temperatures T_(irr)=373-483 K(stage Ⅱ of defect recovery)and T_(irr)=573-673 K(stage Ⅲ)up to 0.15 displacements per atom(dpa)in the Belgian reactor(BR2).The study of the microstructure of neutron-damaged samples using transmission electron microscopy(TEM)revealed visible defects with a predominance of dislocation *** an increase in the neutron irradiation temperature,the spatial distribution of the loops acquired pronounced inhomogeneity,and their average size moderately *** and voids were not ***-induced hardening was found and a linear correlation was obtained between Vickers microhardness and nanohardness for undamaged and neutron-irradiated CVD-W *** of tungsten with neutrons led to a significant increase in the retention of deuterium,which accumulated mainly in vacancy-type ***,the influence of the columnar grain structure in low-dose neutron-irradiated tungsten seemed to be non-trivial upon deuterium retention.

关键词： CVD-W Neutron irradiation Microstructure Hardening Deuterium retention