（2017年4月～ 2018年3月の期間で集計）

＊順位の変動は2017年1月～ 2017年12月の期間との比較

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Speed, Trajectory and Increment in the Number of Cells of Singly Flagellated Bacteria Swimming Close to Boundaries

Tonau NAKAI, Masayuki KIKUDA, Yuichiro KURODA, Tomonobu GOTO

Journal of Biomechanical Science and Engineering（2009）DOI:10.1299/jbse.4.2

 

The influence of a rigid boundary and a free boundary on the motion of singly flagellated bacteria is experimentally investigated. The speed of backward swimming cells is faster near the rigid or free boundary than in the free space without boundary. It is also found that backward swimming speed is faster than forward near the rigid or free boundary. The trajectory of the cells swimming backward near a rigid or free boundary comprises circular parts, while most of forward swimming cells have straight trajectories. Backward swimming cells tend to gather on a rigid or free boundary rather than forward swimming cells. These asymmetric characteristics between forward and backward motions close to a rigid boundary has been predicted by a fluid dynamic simulation.

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Prospect and Recent Research & Development for Civil Use Autonomous Unmanned Aircraft as UAV and MAV

Kenzo NONAMI

Journal of System Design and Dynamics （2007）　DOI:10.1299/jsdd.1.120

 

This paper describes the present state of research and development for civil use autonomous unmanned aircraft. In particular, the history of civil use UAVs, the research and development in the world and in Japan, and the subjects and prospects for control and operation systems of civil use autonomous UAVs are described.

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Dynamics of actin filaments of MC3T3-E1 cells during adhesion process to substrate

Junfeng WANG, Shukei SUGITA, Kazuaki NAGAYAMA, Takeo MATSUMOTO

Journal of Biomechanical Science and Engineering　（2016）　DOI:10.1299/jbse.15-00637

 

In order to determine how cells change their morphology during adhesion process to a substrate, we focused on the actin cytoskeleton and investigated its morphological change along with that of the whole cell during adhesion process. An osteoblastic cell line MC3T3-E1 was used as the test model. We plated cells whose cell cycle had been synchronized by serum starvation on fibronectin-coated glass plate and cultured them for 10 min to 24 h. We then stained their F-actin and nucleus and observed them with a fluorescent microscope for cell area and shape index and 2D parameters for actin morphology, and with a laser scanning microscope for 3D morphology of actin and nucleus. In the beginning of adhesion, the trypsinized cells were round and their nuclei were surrounded uniformly by thick layer of actin. The actin layer in the upper side became actin aggregate （AA） and lower side dense peripheral band （DPB） in 30 min. The upper AA then became smaller and finally to actin filaments （AFs） spanning the cell top. The DPB expanded and finally became AFs on cell bottom by 1 h. The nucleus becomes flattened possibly due to compression by the cell membrane caused by the expansion of the DPB in the early stage of adhesion. In the later stage of adhesion, the number of AFs continuously increased and nucleus became flattened more and more until 12 h. This may be caused by the increase in the top AFs that may compress the nucleus. Cells become more elongated in response to further alignment of AFs until 12 h. These results indicate that change in AFs during adhesion process is complicated not only temporally but also spatially.

 

4位 [→]	Large eddy simulation with modeled wall-stress: recent progress and future directions Johan LARSSON, Soshi KAWAI, Julien BODART, Ivan BERMEJO-MORENO Mechanical Engineering Reviews（2016）　DOI:10.1299/mer.15-00418
5位 [NEW]	Micro Ball End Milling of Titanium Alloy Using a Tool with a Microstructured Rake Face Toshiyuki OBIKAWA, Bunji KANI Journal of Advanced Mechanical Design, Systems, and Manufacturing　（2012） DOI:10.1299/jamdsm.6.1121
6位 [↓]	A Review on High-Speed Machining of Titanium Alloys  Mustafizur RAHMAN, Zhi-Gang WANG, Yoke-San WONG JSME International Journal Series C Mechanical Systems, Machine Elements and Manufacturing（2006）　DOI:10.1299/jsmec.49.11
7位 [↓]	NOx Reduction of Non-Premixed Flames by Combination of Burner and Furnaces Kapuruge Don Kunkuma Amila SOMARATHNE, I Gede PARWATHA, Shoichiro OGURI, Yuzuru NADA, Takahiro ITO, Susumu NODA Journal of Environment and Engineering　（2013）　DOI:10.1299/jee.8.1
8位 [↑]	Effect of Fiber Length on Mechanical Properties of “Green” Composites Using a Starch-Based Resin and Short Bamboo Fibers Hitoshi TAKAGI, Yohei ICHIHARA JSME International Journal Series A Solid Mechanics and Material Engineering　（2004）　DOI:10.1299/jsmea.47.551
9位 [↓]	Development of Power Assisting Suit for Assisting Nurse Labor Keijiro YAMAMOTO, Kazuhito HYODO, Mineo ISHII, Takashi MATSUO JSME International Journal Series C Mechanical Systems, Machine Elements and Manufacturing　（2002）　DOI:10.1299/jsmec.45.703
10位 [↓]	A review of flux reconstruction or correction procedure via reconstruction method for the Navier-Stokes equations Z. J. WANG, H. T. HUYNH Mechanical Engineering Reviews　（2016）　DOI:10.1299/mer.15-00475