Refractory materials sections of the scientific ? technical soviets of the ferrous metal industry of the ussr and the central board of the scientific ? technical department of the ferrous metal industry

Refractories ◽  
1979 ◽  
Vol 20 (7-8) ◽  
pp. 447-448
Author(s):  
E. B. Nefedkina
Keyword(s):  
Ferrous Metal ◽  
Metal Industry ◽  
Refractory Materials ◽  
Technical Department ◽  
Scientific Technical ◽  
Ferrous Metal Industry ◽  
Central Board

The effects of technical change on carbon intensity in China’s non-ferrous metal industry

2021 ◽  
Vol 73 ◽  
pp. 102226
Author(s):  
Mei-Rui Zhong ◽  
Shun-Li Xiao ◽  
Han Zou ◽  
Yi-Jun Zhang ◽  
Yi Song
Keyword(s):  
Technical Change ◽  
Ferrous Metal ◽  
Metal Industry ◽  
Carbon Intensity ◽  
Ferrous Metal Industry

scholarly journals Fermentation pattern of the rumen and hindgut inocula of sheep grazing in an area polluted from the non-ferrous metal industry

2011 ◽  
Vol 51 (No. 2) ◽  
pp. 66-72 ◽  
Author(s):  
Z. Váradyová ◽  
K. Mihaliková ◽  
S. Kišidayová ◽  
P. Javorský
Keyword(s):  
Rumen Fluid ◽  
Total Concentration ◽  
Ferrous Metal ◽  
In Vitro Study ◽  
Metal Industry ◽  
Rumen Content ◽  
Sheep Grazing ◽  
Metal Levels ◽  
Ferrous Metal Industry

In vitro study of the rumen fluid (RF) and hindgut content (HC) fermentation by microbiota taken from sheep grazing in an area atmospherically polluted from the non-ferrous metal industry was conducted and compared with controls from an uncontaminated area (UA). The experimental sheep were exposed to the prolonged intake of heavy metals by grazing in the contaminated area (CA) for one year. Soil and grass from that area and the rumen content of sheep were analyzed for heavy metal levels. Based on the levels of mercury (4.752 mg/kg), copper (232.9 mg/kg), cadmium (1.167 mg/kg), lead (92.509 mg/kg) and arsenic (74.59 mg/kg) the soil was categorized as profusely contaminated. Meadow hay (MH) from UA was used as a tested substrate of fermentation activity; it was incubated with buffered RF and HC inocula from CA and UA for 24 h. The gas volume in CA was significantly decreased by 50 and 36% in RF and HC, respectively. The methane production in CA was significantly decreased by 77 and 71% in RF and HC, respectively. The significantly decreased values of the fermentation parameters in CA in comparison with UA were accompanied by the reduced (P < 0.01) total concentration of rumen ciliate protozoa.  

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