著者

Hiroki Endo Takashi Umeno

出版者

Fuji Technology Press Ltd.

雑誌

Journal of Robotics and Mechatronics (ISSN:09153942)

巻号頁・発行日

vol.29, no.4, pp.767-771, 2017-08-20 (Released:2018-11-20)

参考文献数

17

被引用文献数

5

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This paper reported the tensile strength of the difference of modeling condition on the FDM (Fused Deposition Modeling) 3D printer. The FDM 3D printer is rapidly spread with the end of patent protection in 2009. The FDM models mainly use the prototyping part and art, because that models have low strength. This time we paid attention to that actual models weight is lighter than designing models weight to conduct study on strength. And we investigated the cause of the phenomenon of decrease of polymer extrusion by replacing with the injection molding method. The tensile test proved that the strength of model can be improved by the kind of extruder head. This paper reported influence of the cooling in the supply part of extruder head and temperature of the polymer on the strength of FDM 3D models.

著者

Yuka Takatori Keiichi Shimizu Jun Ogata Hiroki Endo Kanji Ishimaru Shigehisa Okamoto Fumio Hashimoto

出版者

The Japanese Society for Horticultural Science

雑誌

The Horticulture Journal (ISSN:21890102)

巻号頁・発行日

pp.MI-029, (Released:2015-03-07)

被引用文献数

3 8

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A full-length cDNA of a putative flavonoid 3'-hydroxylase (F3'H) gene encoding a key enzyme in the production of cyanidin was cloned from a lisianthus (Eustoma grandiflorum) petal. Lisianthus F3'H (EgF3'H) shares 75.1, 73.8, and 68.2% amino acid identity with Arabidopsis thaliana, Ipomoea nil, and Petunia hybrida, respectively. RT-PCR revealed that wild-type lisianthus flowers accumulated higher levels of F3'H mRNA during the early stages of development than in the late stages. The accumulated F3'H transcript levels in leaves were similar to those in flowers in the early stages of development. Overexpression of lisianthus F3'H cDNA altered flower color from red to blue in the I. nil cultivar ‘Violet’, which lacks a functional F3'H gene. In addition, the transgenic ‘Violet’ plants accumulated cyanidin and peonidin at similar levels to wild-type I. nil. Taking these findings together, this study demonstrates that EgF3'H functions as a flavonoid 3'-hydroxylase with a role in the synthesis of cyanidin and peonidin pigments.