The incidence of skin cancer is increasing by epidemic proportions. Basal cell cancer remains the most common skin neoplasm, and simple excision is generally curative. On the other hand, aggressive local growth and metastasis are common features of malignant melanoma, which accounts for 75 percent of all deaths associated with skin cancer. The primary cause of skin cancer is long exposure to so...

Enhancing the weatherability of bamboo-based products is essential for increasing their application lifespan. In this study, a composite protective coating containing organic and inorganic UV absorbers hindered amine light stabilizer (HALS) was investigated outdoor bamboo scrimber (OBS). The optical properties weathered coated uncoated samples were by colorimetry UV-Vis spectrophotometry. Fouri...

Mirror augmented photovoltaic (MAPV) systems utilize low cost mirrors to couple more light into a photovoltaic (PV) absorber. By increasing the light absorbed, they are expected to produce less expensive electricity. As a substrate candidate for back surface reflector mirrors, two grades of PMMA have been exposed to UV stress from two sources at two intensities for two doses in an effort to see...

The energy levels and lifetimes of the lowest excited triplet (T1) states of UV-B absorbers, 2-ethylhexyl salicylate (EHS) and homomenthyl salicylate (HMS), and their deprotonated anions (EHS(-) and HMS(-)) were determined through measurements of phosphorescence and electron paramagnetic resonance (EPR) spectra in rigid solutions at 77 K. The observed T1 energies of EHS and HMS are higher than ...

A hydromagnetic (MHD) wind from a clumpy molecular accretion disk is invoked to explain observations of warm absorbing gas at UV and X-ray energies in Seyfert 1 galaxies. This paper focuses on two important issues: (1) compatibility of kinematics and dynamics of an MHD wind with the observed properties of warm absorbers; and (2) the relationship between the UV and X-ray absorbing gases. We prov...

Abstract This study demonstrates that bio-based products of lignin depolymerisation can potentially replace common antioxidants and UV absorbers in the plastics cosmetics industries. The kraft Indulin AT was used to obtain low-MW monomers & oligomers rich phenolic hydroxyl groups. Both thermo-oxidative stability antioxidant activity significantly improved upon depolymerisation. results from...