Enhancing the corrosion inhibition of copper sheets in oil-in-water (O/W) emulsions by combining two organic heterocyclic derivatives.

Copper sheets corrode easily when exposed to oil-in-water (O/W) emulsions during metal-forming processes. The quest for identifying novel, high-efficiency copper inhibitors and realizing the effective protection of copper surfaces from emulsion corrosion has gradually attracted considerable attention. In this study, two organic heterocyclic derivatives, ,-bis(2-ethylhexyl)-4-methyl-1-benzotriazol-1-methanamine (NBTAH) and 2,5-bis(octyldithio)-1,3,4-thiadiazole (BTDA), were introduced as copper inhibitors into O/W emulsions.

Corrosion Characteristics of Rolling Oil on the Rolled Copper Foil.

Static corrosion experiments were carried out to investigate the corrosion of each kind of component in the rolling oil on the rolled copper foil. The surface morphology and chemical composition of corrosion products were detected by a digital camera, scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). The results showed that the maximum corrosion rate of rolled copper foil in the base stock and friction modifiers (butyl stearate and dodecanol) was close to zero, while that of rolled copper foil in the N-containing borate, phosphate and the fully formulated rolling oil were 0.

Reverting doxorubicin resistance in colon cancer by targeting a key signaling protein, steroid receptor coactivator.

Although there have been notable improvements in treatments against cancer, further research is required. In colon cancer, nearly all patients eventually experience drug resistance and stop responding to the approved drugs, making treatment difficult. Steroid receptor coactivator (SRC) is an oncogenic nuclear receptor coactivator that serves an important role in drug resistance.

Pirarubicin inhibits multidrug-resistant osteosarcoma cell proliferation through induction of G2/M phase cell cycle arrest.

Aim: Pirarubicin (THP) is recently found to be effective in treating patients with advanced, relapsed or recurrent high-grade osteosarcoma. In this study, the effects of THP on the multidrug-resistant (MDR) osteosarcoma cells were assessed, and the underlying mechanisms for the disruption of cell cycle kinetics by THP were explored.

Methods: Human osteosarcoma cell line MG63 and human MDR osteosarcoma cell line MG63/DOX were tested.