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7. Oceanic squid do fly

Author

Muramatsu, K., Yamamoto, J., Abe, T., Sekiguchi, K., Hoshi, N., and Sakurai, Y.

Subjects
Animal flight -- Methods, Biological sciences
Abstract

Using powerful jet propulsion, some squid species are able to exit the water and become airborne; this is a common behavior seen throughout the world's oceans. However, direct scientific observation is rare, with most studies relying on anecdotal evidence and limited photographic documentation. Here, we examine the flying behavior of young oceanic squid (Ommastrephidae) observed in sequential photographs taken in the Northwest Pacific (35°34.0'N, 146°19.3'E) on July 25, 2011. We define four phases in the flight process: launching, jetting, gliding and diving. During flight, squid actively change their aerial posture and attitude depending on the flight phase and their distance from the water. The present study demonstrated that flight of squid is not simple gliding after incidental exit from the water, but involves jet propulsion, generation of lift force and control of different body poshires in different flight phases, which have evolved to enhance escape from predators., Introduction The evolution of a buoyancy mechanism released shelled mollusks from the benthos, thereby allowing the descendant cephalopods to adopt a pelagic existence (Boyle and Rodhouse 2005). Modern squids have [...]

Published
2013
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24. Subjective Evaluation of Denture Adhesives: A Multicenter Randomized Controlled Trial

Author

Ohwada, G., primary, Minakuchi, S., additional, Sato, Y., additional, Kondo, H., additional, Nomura, T., additional, Tsuboi, A., additional, Hong, G., additional, Itoh, Y., additional, Kawai, Y., additional, Kimoto, S., additional, Gunji, A., additional, Suzuki, A., additional, Suzuki, T., additional, Kimoto, K., additional, Hoshi, N., additional, Saita, M., additional, Yoneyama, Y., additional, Morokuma, M., additional, Okazaki, J., additional, Maeda, T., additional, Nakai, K., additional, Ichikawa, T., additional, Nagao, K., additional, Fujimoto, K., additional, Murata, H., additional, Kurogi, T., additional, Yoshida, K., additional, Nishimura, M., additional, Nishi, Y., additional, Murakami, M., additional, Hosoi, T., additional, and Hamada, T., additional

Published
2019
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33. Improving the Efficiency by Controlling the Switching Frequency for Secondary-Side Converter of an Inductive Power Transfer System.

Author

OTA, R. Y. O. S. U. K. E., HOSHI, N. O. B. U. K. A. Z. U., and UCHIDA, K. O. S. U. K. E.

Subjects
*ELECTRONIC switch-mode DC-to-DC converters, *CONVERTERS (Electronics), *INDUCTIVE power transmission, *WIRELESS power transmission, *BRIDGE rectifiers, *ELECTRIC current rectifiers
Abstract

SUMMARY The switching frequency affects the efficiency of a secondary-side converter that is configured with a diode bridge rectifier connected to a DC-DC converter in an inductive power transfer (IPT) system. The efficiency characteristics for the switching frequency of a secondary-side converter were analyzed theoretically in order to establish a highly efficient control scheme the controls the switching frequency of the converter. A control scheme is proposed in which the switching frequency of the secondary-side converter is controlled according to the efficiency characteristics. The validity of the proposed control scheme was clarified through experiments. The results showed that the proposed control scheme improved the efficiency of the IPT system by 3.4 points compared to the conventional control scheme. [ABSTRACT FROM AUTHOR]

Published
2018
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34. Immunohistochemical study of the apoptosis process in epidermal epithelial cells of rats under a physiological condition

Author

Udayanga, K.G.S, Miyata, H., Yokoo, Y., Qi, W.M., Takahara, E., Mantani, Y., Yokoyama, T., Hoshi, N., and Kitagawa, Hiroshi

Subjects
integumentary system, Epidermis, Immunohistochemistry, 636 - Veterinaria. Explotación y cría de animales. Cría del ganado y de animales domésticos
Abstract

Epidermal homeostasis is maintained by both epithelial proliferation in the stratum basale (SB) and the apoptosis of epithelial cells under physiological conditions. In this study, the induction and regulation mechanisms of epidermal apoptosis were immunohistochemically investigated in the epidermis from Wistar rat’s palm and foot pad by using several apoptotic related proteins under a physiological condition. The results showed that Fas and Fas-L were expressed in cellular membranes of the stratum spinosum (SS), whereas TNF-R1 did not show any membranous expression in any epidermal layers. TNF-α was not observed in the epidermis. Caspase-10, cleaved caspase-3 and DNase-1 were found in the epithelial cytoplasms from the SS to stratum granulosum (SG), whereas caspase-8 was not detected in the epidermis. XIAP and Bak were found in the cytoplasm from the SS to SG, and the intensity of Bak-positivity was stronger in the SG than the SS, whereas Bid, Apaf-1 and cleaved caspase-9 were restricted in the SG. Homogenous cytoplasmic immunoreactivity of Bcl-2 was found in the SB and the intensity was gradually decreased from the SB to the SG. The granular-cytoplasmic immunopositivity of cytochrome C gradually altered into homogenous cytoplasmic expression in the upper half of the SG. Single-stranded DNA was rarely detected in the upper portion of the SG. These results suggest that epidermal apoptosis is induced by the interaction between Fas and Fas-L and the activation of caspase-10, and might initially proceed through a mitochondrialindependent pathway, and that a mitochondrialdependent pathway finally accelerated under physiological conditions.

Published
2011

37. Property formalisation and guided land development in Peru

Author

Turkstra, J., Kagawa, A., Amemiya Hoshi, N., Faculty of Geo-Information Science and Earth Observation, Department of Urban and Regional Planning and Geo-Information Management, and UT-I-ITC-PLUS

Subjects
PGM, ADLIB-ART-3007
Published
2000

38. [Cyclic ADP-ribose as a second messenger--intramembrane signal transduction from receptors to ADP-ribosyl cyclase]

Author

haruhiro higashida, Yokoyama S, Hashii M, and Hoshi N

Subjects
Adenosine Diphosphate Ribose, Cyclic ADP-Ribose, Potassium Channels, Ryanodine Receptor Calcium Release Channel, ADP-ribosyl Cyclase 1, Antigens, Differentiation, Receptors, Muscarinic, Second Messenger Systems, NAD+ Nucleosidase, Antigens, CD, GTP-Binding Proteins, Animals, Calcium, ADP-ribosyl Cyclase, Signal Transduction
Published
1999

40. Bradykinin B2 receptors and signal transduction analyzed in NG108-15 neuroblastoma x glioma hybrid cells, B2 receptor-transformed CHO cells and ras-transformed NIH/3T3 fibroblasts

Author

haruhiro higashida, Hashii M, Yokoyama S, Taketo M, Hoshi N, Noda M, Zg, Zhong, Shahidullah M, Minabe Y, Nakashima S, and Nozawa Y

Subjects
Receptor, Bradykinin B2, Receptors, Bradykinin, 3T3 Cells, CHO Cells, Glioma, Hybrid Cells, Mice, Neuroblastoma, Genes, ras, Cricetinae, Animals, Humans, Cell Line, Transformed, Signal Transduction
Published
1996

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