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Though protein transduction domains (PTDs) are well known for the delivery of exogenous therapeutic proteins into cells, the low efficiency of transduction is a serious obstacle to protein transduction by PTD. Catalase (CAT) is one of the major antioxidant enzymes which cells counteract the deleterious effects of Reactive oxygen species (ROS). Among the various materials tested, we found that imipramine...
This study aims to determine the antioxidant activities of traditional plants from the Lauraceae family in Sarawak. Twenty selected plants from the Lauraceae family were collected from various mixed dipterocarp forests located in the Kuching and Samarahan Districts of Sarawak. Their antioxidant activities were evaluated on the methanolic extracts using the DPPH (2,2-Diphenyl-l-picrylhydrazyl ) assay...
Deterioration of polymeric dielectrics by partial discharge (PD) might occur at defects in an insulation layer. To elucidate the mechanism of deterioration by PD, measurements were conducted of the gas components produced during deterioration and the substances created on the surface of cross-linked polyethylene (XLPE) samples subjected to PD. Gas component measurements were performed using an experimental...
An experimental investigation of the effects of antioxidants on thermal degradation of EPDM and XLPE was carried out. We used ldquomapping methodrdquo in our FTIR spectroscopy to evaluate the degree of thermal degradation. The obtained absorbance data of FT-IR spectra were analyzed statistically. Thereby, we confirmed a clear suppressive effect of sulfur-containing phenolic antioxidant, 4-4 thiobis...
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