Diet and body shape changes of pārokoKelloggella disalvoi(Gobiidae) from intertidal pools of Easter Island

2017 ◽  
Vol 91 (5) ◽  
pp. 1319-1336 ◽  
Author(s):  
J. Vera-Duarte ◽  
C. A. Bustos ◽  
M. F. Landaeta
Author(s):  
Karen S. Young ◽  
K. Han Kim ◽  
Sudhakar Rajulu

Objective This study aims to identify the change in anthropometric measurements during spaceflight due to microgravity exposure. Background Comprehensive and accurate anthropometric measurements are crucial to assess body shape and size changes in microgravity. However, only limited anthropometric data have been available from the astronauts in spaceflight. Methods A new photogrammetry-based technique in combination with a tape-measure method was used for anthropometric measurements from nine crewmembers on the International Space Station. Measurements included circumference and height for body segments (chest, waist, bicep, thigh, calf). The time-dependent variations were also assessed across pre-, in-, and postflight conditions. Results Stature showed a biphasic change with up to 3% increase at the early flight phase, followed by a steady phase during the remaining flight. Postflight measurements returned to a similar level of the preflight. Other linear measurements, including acromion height, showed similar trends. The chest, hip, thigh, and calf circumferences show overall decrease during the flight up to 11%, then returned close to the preflight measurement at postflight. Conclusion The measurements from this study provide critical information for the spacesuit and hardware design. The ground-based assessments for spacesuit fit needs to be revalidated and adjusted for in-flight extravehicular activities from this data. Application These data can be useful for space suit design as well as habitat, vehicle, and additional microgravity activities such as exercise, where the body shape changes can affect fit, performance, and human factors of the overall design.


Author(s):  
Joan C. Lo ◽  
Kathleen Mulligan ◽  
Viva W. Tai ◽  
Heather Algren ◽  
Morris Schambelan
Keyword(s):  

Author(s):  
Akitoshi Matsui ◽  
Koichi Hishida

Reductions of the side force and the connected yawing moment are of significance for driving stability under cross wind. This paper shows the suitable body shape under unsteady cross wind for reducing side force and yawing moment. Numerically, the shape changes such as rounded and/or cut off corners and patterned indented side surface under steady cross wind are evaluated, using k-ε model. The adequate shapes from the numerical data are experimentally validated under steady and unsteady cross wind in a wind tunnel. Flow structure and, side force and yawing moment are examined by High-speed PIV and a three-component load cell, respectively.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Giordano Madeddu ◽  
Vito Fiore ◽  
Michela Melis ◽  
Silvia Ortu ◽  
Franca Mannu ◽  
...  

2021 ◽  
Author(s):  
John A. SHEPHERD ◽  
Michael WONG ◽  
Isaac TIAN ◽  
Yong En LIU ◽  
Samantha KENNEDY ◽  
...  

2021 ◽  
Vol 22 (4) ◽  
pp. 405-418
Author(s):  
Su Joung Cha
Keyword(s):  

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