Papers by Keyword: Inhibition Effect

Abstract: The inhibition effect of synthesized fatty amides mixture, pyridine and pyrrole as corrosion inhibitors on carbon steels in saline water had been compared using Linear Polarization Resistance Method (LPRM). It is still unknown which of these organics performed best than another. The experimental results showed that the inhibition effect of the synthesized fatty amides mixture is found to be better than pyridine and pyrrole, indicating the presence of various chain lengths of fatty amides molecules. These molecules provide a better surface on carbon steels than pyrrole and pyridine.

Abstract: The corrosion inhibition effect of sodium nitrite (NaNO2) and triethanolamine (N(C2H4OH)3) for uranium was evaluated in 200 mg/L sodium chloride (NaCl) solution by linear polarization and potentiodynamic polarization. The results showed that NaNO2 predominatly acted to inhibit the anodic reaction for the electrochemical behavior of uranium. NaNO2 combined with N(C2H4OH)3 could reinforce corrosion resistance of uranium. Multi-function could be found from 20 g/L NaNO2 combined with 10 mL/L N(C2H4OH)3. Pitting corrosion on uranium surface could be effectively prevented by 1g/L NaNO2 combined with 10 mL/L N(C2H4OH)3. Auger electron spectroscopy (AES) and Raman spectrum analyses indicated that uranium oxide layer mainly contained uranium dioxide (UO2).

Abstract: Bamboo is widely used in building construction in south China. However, Termites are the natural enemies of bamboo building. Therefore, the inhibition effect of extractives on building bamboo’s termite prevention was studied. The results shown that the benzene / ethanol extractives of camphor tree roots, camphor leaves,Cedrus deodara leaves needles, and torch pine leaves had the better toxic effect to termites among the 15 extractives.

Abstract: Using growth rate method, biological activities of 20 water extracts from 20 different plants were assayed against Colletotrichum gloeosporioides and Agaricodochium camellia Liu. The results show the inhibition rates of the extracts of Syzygium aromaticum, Scutellaria altissima L, Aloe Vera, Lonicera japonica Thunb, Andrgraphis paniculata are more than 60%. The best inhibition effects was S. aromaticum, respectively 96.2% and 98.2%. The toxicity test indicates that the EC50 of S. aromaticum and S. altissima L extracts and the mixture at the 1:1, 1:2, 1:5, 2:1, 5:1 volume ratio against C. gloeosporioides and A. camellia are, respectively ,4.2 and 3.68mg/ml,4.52 and 6.90 mg/ml,5.28 and 5.33 mg/ml,5.84 and 7.01 mg/ml,4.89 and7.01 mg/ml,5.24 and 6.11 mg/ml,4.77 and 5.65mg/ml. Synergistic interaction values are >0.5 and <1.5.