Hiroki Goto  Daisuke Takemura  Yuzo Kawasaki  Akio Nakamura 《Electronics and Communications in Japan》2013,96(11):70-81

This paper proposes an interface system that enables a user to input and obtain information independent of position within a certain area in an environment with a projector–camera system. Hand gestures detected in the image are used as a cue to start the system, to distinguish gestures based on the user's intention to operate the system from other daily‐life motions, and to specify the position of the user's hand. Hand gesture detection is implemented based on a combination of the background subtraction method and skin color extraction. The user can designate the projection area freely on a flat surface in the environment with his/her hand. The projector is mounted on a pan‐tilt unit that projects information according to the user's indications. Then, the user's fingertip is detected using simple template matching and he/she interacts with the projected information to input commands without any equipment. As one application, we developed an interface system to operate electrical appliances such as a television intuitively in an everyday environment. © 2013 Wiley Periodicals, Inc. Electron Comm Jpn, 96(11): 70–81, 2013; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/ecj.11477  相似文献   

    

Tetsuya Iizuka  Hideki Sezutsu  Ken‐ichiro Tatematsu  Isao Kobayashi  Naoyuki Yonemura  Keiro Uchino  Kenichi Nakajima  Katsura Kojima  Chiyuki Takabayashi  Hiroaki Machii  Katsushige Yamada  Hiroyuki Kurihara  Tetsuo Asakura  Yasumoto Nakazawa  Atsushi Miyawaki  Satoshi Karasawa  Hatsumi Kobayashi  Junji Yamaguchi  Nobuo Kuwabara  Takashi Nakamura  Kei Yoshii  Toshiki Tamura 《Advanced functional materials》2013,23(42):5232-5239

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.  相似文献   

    

H Nakamura  T Ooyama 《Journal of electron microscopy》1988,37(3):167-170

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  总被引：1，自引：0，他引：1  

T Oda  S Watanabe  T Shigehara  T Nakamura 《Journal of electron microscopy》1983,32(2):172-175

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T Nakamura  T Nagano 《Journal of electron microscopy》1985,34(4):364-372

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T Oda  T Nakamura  S Watanabe 《Journal of electron microscopy》1977,26(3):203-207

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S. Nakajima  S. Nakamura  T. Ueki  T. Sakai   《Microelectronics Reliability》2004,44(3):449-458

A sample preparation machine introduces a variety of techniques for low-damage sample preparation, especially for the physical analysis of chip size packages (CSPs) and the flip-chip. The techniques are not only useful for CSPs and the flip-chip, but also for a variety of single components. Sample preparation time is greatly reduced.  相似文献   

    

Nakamura YN  Iwamoto H  Ono Y  Shiba N  Nishimura S  Tabata S 《Meat science》2003,64(1):43-50

The relative distribution of types I and III collagens and collagen fibre architecture in the perimysium and endomysium were compared to the longissimus thoracis (LT) and pectoralis profundus (PP) muscles in pigs. The LT muscle was composed of type I myofibres 16.8%, IIA 12.9% and IIB 70.2%, and the PP muscle was 25.4, 23.1 and 51.5%, respectively. The total collagen amount differed significantly between the LT (2.66 mg/g) and PP (4.13 mg/g) muscle (P<0.001). On image analysis of the immunohistochemical preparations for types I and III collagens, the percentage area of the perimysium to the total collagen area showed significant differences between the muscles, where perimysial type I collagen occupied 25.4% of the total area in the LT muscle and 45.7% in the PP and perimysial type III 37.6 and 54.5%, respectively (P<0.001). In scanning electron microscopic photographs of the macerated preparation, very thick collagen layers composed of several fibre bands were observed in the perimysia of the PP muscle and appeared differently from the thinner perimysia with a few bands in the LT. Similar architecture of endomysial collagen fibres were observed around every myofibre type in the PP muscle and also in the LT. The fine surface cover of reticular collagen fibres around an adipocyte was shown as a global cast. These results suggested that the total collagen amount of the PP muscle was related mainly to the well developed perimysia composed of several collagen bands, indicating tougher meat compared with the LT muscle.  相似文献   

    

Akihiko Omata  Shoji Nakamura  Seiji Hashimoto  Kiyoshi Furukawa 《Flavour and Fragrance Journal》1992,7(1):33-35

The essential oil of one of the cultivars of Plumeria rubra L. ‘Irma Bryan’ growing in Hawaii was extracted by simultaneous distillation and extraction (SDE). The essential oil was analysed with GC and GC-MS, and a total of 67 compounds were identified. β-Phenylethyl alcohol, phenylacetaldehyde and methyl cinnamate were found to make a major contribution to the floral spicy scent of this flower.  相似文献   

  总被引：1，自引：0，他引：1  

Wang Z  Itoh Y  Hosaka Y  Kobayashi I  Nakano Y  Maeda I  Umeda F  Yamakawa J  Kawase M  Yag K 《Journal of Bioscience and Bioengineering》2003,95(5):541-543

In search of an efficient transdermal drug delivery system (TDDS), a polyhydroxyalkanoate (PHA)-based system with a polyamidoamine dendrimer was examined. Tamsulosin was used as the model drug. The dendrimer was found to act as the weak enhancer. By adding the dendrimer, the dendrimer-containing PHA matrix achieved the clinically required amount of tamsulosin permeating through the skin model. This is also the first report of the application of PHA and dendrimer to the TDDS.  相似文献