Anodizing of aluminium and its alloys. Estimation of loss of absorptive power of anodic oxidation coatings after sealing. Dye-spot test with prior acid treatment

2017 ◽  

2011 ◽  
Vol 87 (3) ◽  
pp. 381-386 ◽  
Author(s):  
Sourour Chaâbane Elaoud ◽  
Marco Panizza ◽  
Giacomo Cerisola ◽  
Tahar Mhiri


Author(s):  
George F. Leeper

Polysaccharide elementary fibrils are usually fasciated into microfibrils of from one hundred to a few hundred Angstroms wide. Cellulose microfibrils when subjected to acid treatment dissociate into component elementary fibrils. For pectic acid it was observed that variations in pH could cause a change in the fasciation of the elementary fibrils.Solutions of purified pectic acid and sodium phosphotungtate were adjusted to various pH levels with NaOH or HCl and diluted to give a final concentration of 0.5 and 1% for the polysaccharide and negative stains respectively. Micrographs were made of the samples after drying on a carbon film covered grid. The average number of elementary fibrils was determined by counting the number of elementary fibrils in each fascicle intersected by lines drawn across the micrograph.



1960 ◽  
Vol 23 ◽  
pp. 225-226 ◽  
Author(s):  
K LALMALLIK ◽  
B SEN
Keyword(s):  


2020 ◽  
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M Kreuter ◽  
F Bonella ◽  
N Blank ◽  
E Siegert ◽  
J Henes ◽  
...  


2006 ◽  
Vol 37 (06) ◽  
Author(s):  
M Rauchenzauner ◽  
E Haberlandt ◽  
S Scholl-Bürgi ◽  
D Karall ◽  
E Schönherr ◽  
...  


2015 ◽  
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Craig Munns ◽  
Lauren Peacock ◽  
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Michaela Kneissel ◽  
Ina Kramer ◽  
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