WATER CHANNELS DRIVE FREEZE TOLERANCE

2006 ◽  
Vol 209 (15) ◽  
pp. v-vi
Author(s):  
J. Overgaard
Keyword(s):  
Freeze Tolerance ◽  
Water Channels

Radio and Electrical Measurements on Glacial Streams

1987 ◽  
Vol 33 (114) ◽  
pp. 239-242
Author(s):  
M. E. R. Walford
Keyword(s):  
Electrical Conductivity ◽  
Water Channel ◽  
Water System ◽  
Low Frequency ◽  
Water Channels ◽  
Radiative Loss ◽  
Radio Waves ◽  
Electrical Measurements ◽  
Water Conductivity ◽  
Glacier Surface

AbstractWe discuss the suggestion that small underwater transmitters might be used to illuminate the interior of major englacial water channels with radio waves. Once launched, the radio waves would naturally tend to be guided along the channels until attenuated by absorption and by radiative loss. Receivers placed within the channels or at the glacier surface could be used to detect the signals. They would provide valuable information about the connectivity of the water system. The electrical conductivity of the water is of crucial importance. A surface stream on Storglaciären, in Sweden, was found, using a low-frequency technique, to have a conductivity of approximately 4 × 10−4 S m−1. Although this is several hundred times higher than the conductivity of the surrounding glacier ice, the contrast is not sufficient to permit us simply to use electrical conductivity measurements to establish the connectivity of englacial water channels. However, the water conductivity is sufficiently small that, under favourable circumstances, radio signals should be detectable after travelling as much as a few hundred metres along an englacial water channel. In a preliminary field experiment, we demonstrated semi quantitatively that radio waves do indeed propagate as expected, at least in surface streams. We conclude that under-water radio transmitters could be of real practical value in the study of the englacial water system, provided that sufficiently robust devices can be constructed. In a subglacial channel, however, we expect the radio range would be much smaller, the environment much harsher, and the technique of less practical value.

Foldamer-based ultrapermeable and highly selective artificial water channels that exclude protons

2021 ◽  
Author(s):  
Arundhati Roy ◽  
Jie Shen ◽  
Himanshu Joshi ◽  
Woochul Song ◽  
Yu-Ming Tu ◽  
...  
Keyword(s):  
Water Channels ◽  
Artificial Water

Water Channels in the Peritoneum

1996 ◽  
Vol 16 (3) ◽  
pp. 255-259 ◽  
Author(s):  
Marja M. Ho-Dac-Pannekeet ◽  
Raymond T. Krediet
Keyword(s):  
Water Channels

scholarly journals Aquaporin water channels in exocrine glands

2000 ◽  
Vol 15 (Suppl) ◽  
pp. S7 ◽  
Author(s):  
Martin Steward ◽  
Tae Hwan Kwon
Keyword(s):  
Water Channels ◽  
Exocrine Glands

Phenotypic plasticity and local adaptation in freeze tolerance: Implications for parasite dynamics in a changing world

2020 ◽  
Vol 50 (2) ◽  
pp. 161-169 ◽  
Author(s):  
O. Alejandro Aleuy ◽  
Stephanie Peacock ◽  
Eric P. Hoberg ◽  
Kathreen E. Ruckstuhl ◽  
Taylor Brooks ◽  
...  
Keyword(s):  
Phenotypic Plasticity ◽  
Local Adaptation ◽  
Freeze Tolerance ◽  
Parasite Dynamics ◽  
Changing World

Overexpression ofdnaK/dnaJandgroELConfers Freeze Tolerance toEscherichia coli

1998 ◽  
Vol 253 (2) ◽  
pp. 502-505 ◽  
Author(s):  
King-Chuen Chow ◽  
Wai Lin Tung
Keyword(s):  
Freeze Tolerance
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