Systematic assessment of chlorine tolerance mechanism in a potent biofilm-forming marine bacterium Halomonas boliviensis

2020 ◽  
Vol 151 ◽  
pp. 104967 ◽  
Author(s):  
Meora Rajeev ◽  
T.J. Sushmitha ◽  
Krishnan Ganesh Prasath ◽  
Subba Rao Toleti ◽  
Shunmugiah Karutha Pandian
2012 ◽  
Vol 27 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Ajiraporn Kongpol ◽  
Junichi Kato ◽  
Takahisa Tajima ◽  
Alisa S. Vangnai

Author(s):  
W. A. Chiou ◽  
N. Kohyama ◽  
B. Little ◽  
P. Wagner ◽  
M. Meshii

The corrosion of copper and copper alloys in a marine environment is of great concern because of their widespread use in heat exchangers and steam condensers in which natural seawater is the coolant. It has become increasingly evident that microorganisms play an important role in the corrosion of a number of metals and alloys under a variety of environments. For the past 15 years the use of SEM has proven to be useful in studying biofilms and spatial relationships between bacteria and localized corrosion of metals. Little information, however, has been obtained using TEM capitalizing on its higher spacial resolution and the transmission observation of interfaces. The research presented herein is the first step of this new approach in studying the corrosion with biological influence in pure copper.Commercially produced copper (Cu, 99%) foils of approximately 120 μm thick exposed to a copper-tolerant marine bacterium, Oceanospirillum, and an abiotic culture medium were subsampled (1 cm × 1 cm) for this study along with unexposed control samples.


Crisis ◽  
2010 ◽  
Vol 31 (6) ◽  
pp. 303-310 ◽  
Author(s):  
Bas Verwey ◽  
Jeroen A. van Waarde ◽  
Molla A. Bozdağ ◽  
Iris van Rooij ◽  
Edwin de Beurs ◽  
...  

Background: Assessment of suicide attempters in a general hospital may be influenced by the condition of the patient and the unfavorable circumstances of the hospital environment. Aims: To determine whether the results of a reassessment at home shortly after discharge from hospital differ from the initial assessment in the hospital. Methods: In this prospective study, systematic assessment of 52 suicide attempters in a general hospital was compared with reassessment at home, shortly after discharge. Results: Reassessments at home concerning suicide intent, motives for suicide attempt, and dimensions of psychopathology did not differ significantly from the initial hospital assessment. However, patients’ motives for the suicide attempt had changed to being less impulsive and more suicidal, worrying was significantly higher, and self-esteem was significantly lower. A third of the patients had forgotten their aftercare arrangements and most patients who initially felt no need for additional help had changed their mind at reassessment. Conclusions: Results from this group of suicide attempters suggest that a brief reassessment at home shortly after discharge from hospital should be considered.


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