The effect of five different chemical treatments (HNO3, H2SO4, H2O2, HNO3 + H2SO4 and HNO3 + HCl) on the homogeneity, surface chemistry, structure and dispersibility in water of iron- and iron ...

In this work, for the first time, a sub-250 nm light-emitting diode (LED) is investigated as a light source for optical detection in chemical analysis. A 235 nm deep ultraviolet-light-emitting diode ...

Both UVA and UVB rays can damage your skin, just in different ways. One causes premature aging, the other is more prone to causing sunburn, DNA damage, and skin cancer.

Ultraviolet light-emitting diodes (UV-LEDs) have started replacing ultraviolet lamps. The power of UV-LEDs has greatly improved and the cost has decreased. In this paper, we attempt to understand the ...