scholarly journals Indole at low concentration helps exponentially growing Escherichia coli survive at high temperature

PLoS ONE ◽  
2017 ◽  
Vol 12 (12) ◽  
pp. e0188853 ◽  
Author(s):  
Junyan Liu ◽  
David Summers
Keyword(s):  
Escherichia Coli ◽  
High Temperature ◽  
Low Concentration

The Adsorption of Low Concentration SO2 with the Second Modified Activated Carbon Fiber Loaded Mn

2011 ◽  
Vol 109 ◽  
pp. 125-130
Author(s):  
Jie Fu ◽  
Ying Chun Yan ◽  
Jing Zhang
Keyword(s):  
Activated Carbon ◽  
High Temperature ◽  
Adsorption Properties ◽  
Activated Carbon Fiber ◽  
Impregnation Method ◽  
Air Velocity ◽  
Desulfurization Rate ◽  
Modified Activated Carbon ◽  
Low Concentration ◽  
Adsorption Temperature

The Mn loaded ACF (ACF-Mn), prepared by impregnation method combined with activation method under high temperature, can be used to adsorb the low concentration SO2. The modified ACF was characterized by iodine value and functional groups. The adsorption properties of low concentration SO2 on ACF-Mn-Cu50 were also studied. The result showed that the adsorption properties were improved with the granular Cu. Amount of Mn particles attached to the surface of ACF and the desulfurization rate of ACF-Mn-Cu50 both increased after second modification when the adsorption temperature was 60°C, the air velocity was Q1=0.3 L/min and Q2=0.4 L/min respectively and the concentration of SO2 was 0.62×10-4 μg/ml.

scholarly journals Concentration-dependent spectroscopic properties and temperature sensing of YNbO4:Er3+ phosphors

RSC Advances ◽  
2017 ◽  
Vol 7 (38) ◽  
pp. 23751-23758 ◽  
Author(s):  
Xin Wang ◽  
Xiangping Li ◽  
Lihong Cheng ◽  
Sai Xu ◽  
Jiashi Sun ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Sensitivity ◽  
Spectroscopic Properties ◽  
Temperature Sensing ◽  
Low Concentration ◽  
High Temperature Sensitivity

Er3+ concentration had significant influences on temperature sensitivity. The sample with a low concentration of Er3+ had high temperature sensitivity.

scholarly journals Thermoregulation of Escherichia coli hchA Transcript Stability

2007 ◽  
Vol 189 (15) ◽  
pp. 5779-5781 ◽  
Author(s):  
Aviram Rasouly ◽  
Yotam Shenhar ◽  
Eliora Z. Ron
Keyword(s):  
Escherichia Coli ◽  
High Temperature ◽  
Low Temperatures ◽  
Temperature Dependent ◽  
Present Evidence ◽  
Transcript Stability

ABSTRACT The conserved chaperone Hsp31 of Escherichia coli is transcribed at low temperatures by σS and repressed by H-NS, whereas at high temperature, transcription is by σ70 independently of both σS and H-NS. Here we present evidence for an additional, novel, temperature-dependent control of Hsp31 expression by increased transcript stability.

An amber mutation in the gene encoding the beta' subunit of Escherichia coli RNA polymerase

1982 ◽  
Vol 152 (2) ◽  
pp. 736-746
Author(s):  
S P Ridley ◽  
M P Oeschger
Keyword(s):  
Escherichia Coli ◽  
High Temperature ◽  
Rna Polymerase ◽  
Coli Strain ◽  
Beta Subunit ◽  
Temperature Sensitive ◽  
Amber Mutation ◽  
Gene Encoding ◽  
Amber Suppressor

An Escherichia coli strain carrying an amber mutation (UAG) in rpoC, the gene encoding the beta prime subunit of RNA polymerase, was isolated after mutagenesis with nitrosoguanidine. The mutation was moved into an unmutagenized strain carrying the supD43,74 allele, which encodes a temperature-sensitive su1 amber suppressor, and sue alleles, which enhance the efficiency of the suppressor. In this background, beta prime is not synthesized at high temperature. Suppression of the mutation by the non-temperature-sensitive amber suppressor su1+ yields a protein which is functional at all temperatures examined (30, 37, and 42 degrees C).

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