Time filter

Source Type

Kumakura K.,Takasaki University of Health and Welfare | Kato R.,Futaba Nutrition College | Kobayashi T.,Takasaki University of Health and Welfare | Sekiguchi A.,Gunma Industrial Technology Center | And 3 more authors.
Food Chemistry | Year: 2017

We investigated the nutritional characteristics of salted radish roots (takuan-zuke) prepared using different methods: takuan-zuke based on sun-drying (hoshi) or salt-pressing (shio-oshi) dehydration, different salt-aging temperatures, and salting with rice bran. We examined differences in nutritional substances in salted radish using chromatographic analysis, bioassay methods, and multivariate analysis. We previously reported that the amount of γ-aminobutyrate in takuan-zuke was increased by both dehydration treatments. In the present study, we observed that sucrose and proline were increased by sun-drying treatment, while little change occurred with salt-pressing treatment. Branched-chain amino acids were increased by both treatments. Interestingly, free fatty acids increased with salt-aging duration, irrespective of the dehydration method. Addition of rice bran to long salt-aging treatment increased the levels of niacin, glutamate, and acetate. Metabolite concentrations were higher in hoshi takuan-zuke than shio-oshi takuan-zuke. Our comprehensive analysis reveals effects of specific manufacturing conditions on beneficial components of takuan-zuke. © 2017 Elsevier Ltd


Fukushima Y.,Saitama Institute of Technology | Suzuki T.,Gunma Industrial Technology Center | Onda K.,Gunma Industrial Technology Center | Komatsu H.,Gunma Industrial Technology Center | And 2 more authors.
International Journal of Automation Technology | Year: 2017

Burn marks are serious defects in injection-molded parts that can result in many defective products. There is thus a great demand for effective systems to reduce these defects in injection-molded products. In this study, we investigate the relationship between gas generation and molding conditions using gas sensors. The results show that gas sensors can be used to monitor burn marks. © 2017, Fuji Technology Press. All rights reserved.


Kurose M.,Maebashi Institute of Technology | Nakamura H.,Asano Co. | Nishi M.,JSOL Corporation | Hirashima T.,JSOL Corporation | And 2 more authors.
International Journal of Automation Technology | Year: 2017

In this paper, some large automotive parts with complex shapes are produced to report the results of our efforts to develop press molding technologies for thermoplastic carbon fiber-reinforced plastic (CFRTP). Members of industry, academia, and the government collaborated to realize this project. The project includes a molding experiment, CAE analysis, and material strength measurements. In the material test, a tensile test, bending test, heat distortion test, and torsion test are carried out to produce several stress-strain curves. Applying the new analytical model in the simulation shows that accuracy is improved. As a result, by measuring the temperature change during the forming of complex shapes, a large automotive part with a complex shape was successfully molded in a short time. Other productivity improvements are also reported on. © 2017, Fuji Technology Press. All rights reserved.


Yamada T.,Takasaki University of Health and Welfare | Uchiyama Y.,Takasaki University of Health and Welfare | Hayashi S.,Takasaki University of Health and Welfare | Kumakura K.,Takasaki University of Health and Welfare | And 3 more authors.
Bioscience, Biotechnology and Biochemistry | Year: 2015

2-[3-(2-Thioxopyrrolidin-3-ylidene)methyl]-tryptophan (TPMT) is a yellow pigment of salted radish roots (takuan-zuke) derived from 4-methylthio-3- butenyl isothiocyanate (MTBITC), the pungent component of radish roots. Here, we prepared salted radish and analyzed the behavior of the yellow pigment and related substances in the dehydration process and long-term salting process. All salted radish samples turned yellow, and their b∗ values increased with time and temperature. The salted radish that was sun-dried and pickled at room temperature turned the brightest yellow, and the generation of TPMT was clearly confirmed. These results indicate that tissue shrinkage due to dehydration, salting temperature, and pH play important roles in the yellowing of takuan-zuke. © 2015 Japan Society for Bioscience, Biotechnology, and Agrochemistry.


Iizuka T.,Japan National Institute of Agrobiological Science | Sezutsu H.,Japan National Institute of Agrobiological Science | Tatematsu K.-I.,Japan National Institute of Agrobiological Science | Kobayashi I.,Japan National Institute of Agrobiological Science | And 18 more authors.
Advanced Functional Materials | Year: 2013

Silk is a protein fiber used to weave fabrics and as a biomaterial in medical applications. Recently, genetically modified silks have been produced from transgenic silkworms. In the present study, transgenic silkworms for the mass production of three colors of fluorescent silks, (green, red, and orange) are generated using a vector originating from the fibroin H chain gene and a classical breeding method. The suitability of the recombinant silks for making fabrics is investigated by harvesting large amounts of the cocoons, obtained from rearing over 20 thousand silkworms. The application of low temperature and a weakly alkaline solution for cooking and reeling enables the production of silk fiber without loss of color. The maximum strain tolerated and Young's modulus of the fluorescent silks are similar to those of ordinary silk, although the maximum stress value of the recombinant silk is slightly lower than that of the control. Fabrics with fluorescent color are demonstrated using the recombinant silk, with the color persisting for over two years. The results indicate that large amounts of genetically modified silk can be made by transgenic silkworms, and the silk is applicable as functional silk fiber for making fabrics and for use in medical applications. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Tanaka G.,Kumamoto University | Parker A.R.,Natural History Museum in London | Hasegawa Y.,Gunma Museum of Natural History | Siveter D.J.,University of Leicester | And 12 more authors.
Nature Communications | Year: 2015

Vision, which consists of an optical system, receptors and image-processing capacity, has existed for at least 520 Myr. Except for the optical system, as in the calcified lenses of trilobite and ostracod arthropods, other parts of the visual system are not usually preserved in the fossil record, because the soft tissue of the eye and the brain decay rapidly after death, such as within 64 days and 11 days, respectively. The Upper Carboniferous Hamilton Formation (300 Myr) in Kansas, USA, yields exceptionally well-preserved animal fossils in an estuarine depositional setting. Here we show that the original colour, shape and putative presence of eumelanin have been preserved in the acanthodii fish Acanthodes bridgei. We also report on the tissues of its eye, which provides the first record of mineralized rods and cones in a fossil and indicates that this 300 Myr-old fish likely possessed colour vision. © 2014 Macmillan Publishers Limited.


Peng B.,Gunma University | Kano M.,Gunma Industrial Technology Center | Nakazawa N.,Gunma University
Advanced Materials Research | Year: 2013

This paper describes the three dimensional measurement of facial feature points. The nostril part was picked up as a feature point. The human's face was observed by the stereo-camera in real time. The depth position of the nostril was derived by the binocular parallax between the detected positions of the two cameras. Here, a new detection method for a nostril was suggested. First of all, the binalization image obtained from the stereo-camera was changed to the connection ingredient by processing labeling. Next, the system narrowed down the candidate of the nostril as a facial feature point by checking the geometric characteristics such as size, the center of gravity every ingredient. Furthermore, the skin color around the nostril was utilized to enhance the detection system. © (2013) Trans Tech Publications, Switzerland.


Suzuki R.,Gunma University | Kaburagi T.,Gunma Industrial Technology Center | Matsubara M.,Gunma University | Tashiro T.,Gunma University | Koyama T.,Gunma University
Experimental Techniques | Year: 2016

A Herbert pendulum wasmodified to a lightweight pendulum with a cylindrical indenter by Habara in order to measure the hardness of viscoelastic materials such as plastics and rubbers. It is difficult to provide enough strain to evaluate the hardness of hard materials using the Herbert pendulum with a cylindrical indenter because the contact stress between the indenter and the specimen is smaller than that of the original Herbert pendulum. In this study, a modified measurement system is developed to accurately measure the swing angle of a lightweight Herbert pendulum with a cylindrical indenter. Two independent laser displacement meters are installed, to provide a noncontact measurement of the swing angle. The modified Herbert pendulum with a cylindrical indenter is evaluated for measuring the hardness of metals. Four types of Herbert hardness are compared with the Vickers hardness. Good correlation is shown between the damping hardness (one type of Herbert hardness) and the Vickers hardness. The damping hardness measured based on the modified Herbert hardness tester can be used as the hardness parameter of the metals. © 2016, The Society for Experimental Mechanics, Inc.


Bitou Y.,Japan National Institute of Advanced Industrial Science and Technology | Hosoya H.,Gunma Industrial Technology Center | Mashimo K.,Gunma Industrial Technology Center
Measurement: Journal of the International Measurement Confederation | Year: 2014

A simple method for reducing the uncertainty of reference standards has been proposed for gauge block comparator calibration. Errors due to the reference value of the length difference for mechanical comparator evaluation can be reduced by using the average of two reference values. Two reference values of length difference are obtained by the appropriate combination of three gauge blocks. Errors caused by reference gauges are canceled and averaged. An error reduction effect was successfully demonstrated using an actual mechanical comparator. © 2014 Elsevier Ltd. All rights reserved.


Mitsomwang P.,Nagaoka University of Technology | Nagasawa S.,Nagaoka University of Technology | Kuroiwa H.,Gunma Industrial Technology Center | Fukushima Y.,Gunma Industrial Technology Center
International Journal of Automation Technology | Year: 2014

This paper aims to reveal the deformation/cutting characteristics of a stacked silicone rubber worksheet subjected to a keen tungsten carbide blade (WC) indentation. Cutting parameters such as blade geometry, feed velocity and hardness of underlay sheet were varied and investigated. It was revealed that: (i) the use of the high feed velocity caused the increase of the 1st inflection, the peak and the breaking points of cutting line force. Also, the positions of these points were postponed when increasing the velocity. (ii) Under the high velocity condition (V =0.416 mm·s-1), the geometry of the blade such as tip radius and primary height affected the cutting line force and the bending deformation of the worksheet. (iii) The application of soft silicone underlay resulted in the postponement of the crack initiation and the breaking positions of the worksheet. However, the final cut edge of the worksheet was invariant with the underlay hardness. In addition, an finite element method analysis of the process was carried out using a non-linear elastic Mooney-Rivlin material model. The cutting resistance and deformation of the worksheet was numerically simulated up to the peak cutting line force point using an FEM model, before the occurrence of large cracking. © 2009 Fuji Technology Press Co,. Ltd. All Rights Reserved.

Loading Gunma Industrial Technology Center collaborators
Loading Gunma Industrial Technology Center collaborators