scholarly journals Stainless steel manual metal arc welding fumes in rats.

1983 ◽  
Vol 40 (2) ◽  
pp. 229-234 ◽  
Author(s):  
P L Kalliomaki ◽  
E Lakomaa ◽  
K Kalliomaki ◽  
M Kiilunen ◽  
R Kivela ◽  
...  
2018 ◽  
Vol 114 ◽  
pp. 334-346 ◽  
Author(s):  
Vishnu B.R. ◽  
Sivapirakasam S.P. ◽  
Satpathy KK ◽  
Shaju K. Albert ◽  
Gopa Chakraborty

1982 ◽  
Vol 10 (2) ◽  
pp. 223-232 ◽  
Author(s):  
Pirkko‐Liisa Kalliomaki ◽  
M. Kiilunen ◽  
V. Vaaranen ◽  
Eeva‐Liisa Lakomaa ◽  
K. Kalliomäki ◽  
...  

2020 ◽  
Vol 177 (1) ◽  
pp. 108-120
Author(s):  
Vamsi Kodali ◽  
Mohammad Shoeb ◽  
Terence G Meighan ◽  
Tracy Eye ◽  
Sherri A Friend ◽  
...  

Abstract Studies suggest that alterations in circulating factors are a driver of pulmonary-induced cardiovascular dysfunction. To evaluate, if circulating factors effect endothelial function after a pulmonary exposure to welding fumes, an exposure known to induce cardiovascular dysfunction, serum collected from Sprague Dawley rats 24 h after an intratracheal instillation exposure to 2 mg/rat of 2 compositionally distinct metal-rich welding fume particulates (manual metal arc welding using stainless steel electrodes [MMA-SS] or gas metal arc welding using mild steel electrodes [GMA-MS]) or saline was used to test molecular and functional effects of in vitro cultures of primary cardiac microvascular endothelial cells (PCMEs) or ex vivo organ cultures. The welding fumes elicited significant pulmonary injury and inflammation with only minor changes in measured serum antioxidant and cytokine levels. PCME cells were challenged for 4 h with serum collected from exposed rats, and 84 genes related to endothelial function were analyzed. Changes in relative mRNA patterns indicated that serum from rats exposed to MMA-SS, and not GMA-MS or PBS, could influence several functional aspects related to endothelial cells, including cell migration, angiogenesis, inflammation, and vascular function. The predictions were confirmed using a functional in vitro assay (scratch assay) as well as an ex vivo multicellular environment (aortic ring angiogenesis assay), validating the concept that endothelial cells can be used as an effective screening tool of exposed workers for determining bioactivity of altered circulatory factors. Overall, the results indicate that pulmonary MMA-SS fume exposure can cause altered endothelial function systemically via altered circulating factors.


2019 ◽  
Vol 137 ◽  
pp. 105439 ◽  
Author(s):  
V.I. Vishnyakov ◽  
S.V. Kozytskyi ◽  
A.A. Ennan

2020 ◽  
Vol 1012 ◽  
pp. 296-301
Author(s):  
Clélia Ribeiro de Oliveira ◽  
Eloá Lopes Maia ◽  
Solange T. da Fonseca ◽  
Marcelo Martins ◽  
Julián Arnaldo Ávila Díaz ◽  
...  

Superduplex stainless steel alloy exhibit high mechanical and corrosion resistance, which main industrial application is in the petrochemical industry. The manufacture and maintenance of such equipment usually involve welding processes, followed by post-welded heat treatment and it often becomes impossible to apply heat treatments. Thereby, the purpose of this work is to verify the effect of a post-welded heat treatment on shielded metal arc welding in steel grade ASTM A890/A890M - grade 6A. The microstructure in the as-welded condition consisted of austenite, secondary austenite, and ferrite phases and, the post-welded heat treatment condition exhibited only austenite and ferrite. The hardness in the melt zone reached values of 300 HV after welding and, the value was reduced to 260 HV in the post-welded heat treatment condition.


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