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低碳锰钢中周期性带状组织 总被引:6,自引:0,他引:6
用扫描电镜和电子探针研究了低碳锰钢中的周期性带状组织,结果表明,在全部研究用钢中,钢锭经热轧后均出现这种组织,其严重程度随钢的成分而异,并随坯带加工顺序而增加,带状组织与锰的显微偏析等因素有关,适当的调整碳锰以及形成模跨铁素体带的转变产物可降低带状组织的严重程度。 相似文献
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Amaiden MR Santander VS Monesterolo NE Campetelli AN Rivelli JF Previtali G Arce CA Casale CH 《Cellular and molecular life sciences : CMLS》2011,68(10):1755-1768
The presence of tubulin in human erythrocytes was demonstrated using five different antibodies. Tubulin was distributed among
three operationally distinguishable pools: membrane, sedimentable structure and soluble fraction. It is known that in erythrocytes
from hypertensive subjects (HS), the Na+, K+-ATPase (NKA) activity is partially inhibited as compared with erythrocytes from normal subjects (NS). In erythrocytes from
HS the membrane tubulin pool is increased by ~150%. NKA was found to be forming a complex with acetylated tubulin that results
in inhibition of enzymes. This complex was also increased in erythrocytes from HS. Treatment of erythrocytes from HS with
nocodazol caused a decrease of acetylated tubulin in the membrane and stimulation of NKA activity, whereas taxol treatment
on erythrocytes from NS had the opposite effect. These results suggest that, in erythrocytes from HS, tubulin was translocated
to the membrane, where it associated with NKA with the consequent enzyme inhibition. 相似文献
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