scholarly journals Transient hexagonal structures in sheared emulsions of isotropic inclusions on smectic bubbles in microgravity conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
P. V. Dolganov ◽  
N. S. Shuravin ◽  
V. K. Dolganov ◽  
E. I. Kats ◽  
R. Stannarius ◽  
...  

AbstractWe describe the collective behavior of isotropic droplets dispersed over a spherical smectic bubble, observed under microgravity conditions on the International Space Station (ISS). We find that droplets can form two-dimensional hexagonal structures changing with time. Our analysis indicates the possibility of spatial and temporal periodicity of such structures of droplets. Quantitative analysis of the hexagonal structure including the first three coordination circles was performed. A peculiar periodic-in-time ordering of the droplets, related to one-dimensional motion of droplets with non-uniform velocity, was found.

2011 ◽  
Vol 18 (5) ◽  
pp. 053701 ◽  
Author(s):  
Ralf J. Heidemann ◽  
Lénaïc Couëdel ◽  
Sergey K. Zhdanov ◽  
K. Robert Sütterlin ◽  
Mierk Schwabe ◽  
...  

Author(s):  
Christopher D. Fregly ◽  
Brandon T. Kim ◽  
Zhao Li ◽  
John K. De Witt ◽  
Benjamin J. Fregly

Loss of muscle mass in microgravity is one of the primary factors limiting long-term space flight [1]. NASA researchers have developed a number of exercise devices to address this problem. The most recent is the Advanced Resistive Exercise Device (ARED) [2], which is currently used by astronauts on the International Space Station (ISS) to emulate typical free-weight exercises in microgravity. ARED exercise on the ISS is intended to reproduce Earth-level muscle loads, but the actual muscle loads produced remain unknown as they cannot currently be measured directly.


2012 ◽  
Vol 323-325 ◽  
pp. 533-537 ◽  
Author(s):  
Y. Inatomi ◽  
I. Yoshizaki ◽  
K. Sakata ◽  
T. Shimaoka ◽  
T. Sone ◽  
...  

Anin situobservation experiment of faceted cellular growth was carried out using transparent organic alloy, salol -t-butyl alcohol, in microgravity conditions on the International Space Station. The temperature and solute concentration fields in the vicinity of the solid-liquid and the growth rate were simultaneously measured by microscopic interferometers.


2020 ◽  
Vol 9 (26) ◽  
Author(s):  
Swati Bijlani ◽  
Nitin K. Singh ◽  
Christopher E. Mason ◽  
Clay C. C. Wang ◽  
Kasthuri Venkateswaran

ABSTRACT The draft genome sequences of six eukaryotic microbial strains belonging to the class Tremellomycetes isolated from the International Space Station were assembled. Further characterization of these sequences will aid in the understanding of the influence of microgravity conditions on these organisms’ potential pathogenicity.


2020 ◽  
Vol 9 (25) ◽  
Author(s):  
Swati Bijlani ◽  
Nitin K. Singh ◽  
Christopher E. Mason ◽  
Clay C. C. Wang ◽  
Kasthuri Venkateswaran

ABSTRACT The draft genome sequences of three Sphingomonas strains isolated from the International Space Station (ISS) were assembled. These genomic sequences will help in understanding the influence of microgravity conditions on their potential bioactive compound production and other important characteristics compared to their Earth counterparts.


2016 ◽  
Vol 56 (3-4) ◽  
pp. 253-262 ◽  
Author(s):  
A. G. Khrapak ◽  
V. I. Molotkov ◽  
A. M. Lipaev ◽  
D. I. Zhukhovitskii ◽  
V. N. Naumkin ◽  
...  

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