The effects of anions CO~(2-)_3,NO~-_2,SO~(2-)_4,MoO~(2-)_4 and PO~(3-)_4 on pitting potential of A3 carbon steel in 0.5 mol/L NaHCO_3+0.05 mol/L NaCl solutions were studied using cyclic potentiodynamic polarization measurements and current-time curves.
Adenocarcinoma presented in most cases as a single peripheral mass less than 4 cm in diameter (79%),with small lobulated margins (61.7%) and brush-like short and fine spiculates (51.1%) ,and was more frequently associated with pitting pleura (13.9%).
There were significantly differences in the incidences of pitting scars/ulcers,elevated muscle enzymes,barium swallow test,renal and ECG abnormalities and the positive rate of ANA,anti-RNP antibody in the patients with PHT and without PHT (P<0.05)Conclusion The above index can help find the possibility with PHT.
The intervascular pitting of soybean are differently in Glycine. All of the vessels shapes of species soybean have represented their position of evolutional system, i.e . the Glycine soja is originally→semi wild→semi culture→Glycine max is a plant of evolvement in Glycine L.
A method of changing the solution in concordance with the potential change is proposed to inhibit pitting corrosion arising in the anodic oxidation of aluminum in chloride-containing solutions.
It is shown that the low pitting resistance of the cladding layers of bimetals, which are currently produced by the pack rolling method, is the central problem.
It can be solved by the use of electroslag cladding, which enables one to obtain cladding layers of an improved metal purity and enhanced pitting resistance.
In oxygen-containing acids with hydrophilic anions, PA and PC are hydrogenated, thus decreasing the cathodic overpotential and significantly retarding iron ionization, which causes pitting at a free corrosion potential.
The possibility of describing the mechanism of local activation in terms of currently prevalent theories of pitting initiation is analyzed.