Study of extraction of iron (III) from chromium sulphate solution

Author(s):  
Ji-jun Liu ◽  
Hong-mei Lin ◽  
Guo-rong Hu ◽  
Jian-rong Yang ◽  
Zhong-dong Peng
Keyword(s):  
1999 ◽  
Vol 241 (1) ◽  
pp. 195-196
Author(s):  
S. Ahmed ◽  
A. Mahmood ◽  
M. A. Awan ◽  
U. ur Rehman

1974 ◽  
Vol 62 (6) ◽  
pp. 1003-1008 ◽  
Author(s):  
Y. A. Gawargious ◽  
Amir Besada ◽  
M. E. M. Hassouna

2021 ◽  
Vol 898 ◽  
pp. 27-33
Author(s):  
Petr Figala ◽  
Rostislav Drochytka ◽  
Vit Černý ◽  
Radek Hermann ◽  
Jiří Kolísko

This paper deals with the study of chemical resistance of new cement-based grout for invert grouting. The aim of this work is to verify new mixtures with specific admixtures. The study monitors resistance to external sulphate attack. Specimens were placed into sulphate solution 29.8 g∙l-1 (44 g∙l-1 Na2SO4) according to DIN19753 standard. Based on the results gained, new mixtures will be designed and optimized by addition of suitable secondary raw materials (fly ash, waste foundry sand, waste glass, waste filers).


1996 ◽  
Vol 199 (11) ◽  
pp. 2531-2535 ◽  
Author(s):  
S Benvenuti ◽  
A Gagliardo

Pigeons were made anosmic by unilateral treatment of their olfactory mucosa with a zinc sulphate solution and by plugging the contralateral nostril. In a series of releases at unfamiliar sites, 55­79 km from the home loft, the experimental birds' homing behaviour was compared with that of two control groups: unmanipulated control birds, and birds subjected to unilateral zinc sulphate treatment and equipped with an ipsilateral nasal plug. The experimental pigeons exhibited homing behaviour ­ in terms of both homeward initial orientation and homing performance ­ significantly poorer than that of both unmanipulated and treated control pigeons. In addition, the homing behaviour of the treated controls turned out to be only slightly, and not significantly, poorer than that of the unmanipulated birds. The results show that the impaired homing capabilities of the zinc-sulphate-treated birds are due to the lack of navigational information and not to non-specific brain damage caused by the experimental treatment.


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