UV-Absorber.

[Toxicology of UV-absorber MOB].

Attachment 3 Uv-a Protection with New Class of Uv Absorber

The Sun Protection Factor (SPF) measurement is based on erythema; mainly caused by Ultraviolet B radiation (UV-B). Therefore, SPF more appropriately describes a Sunburn Protection Factor. On the other hand, the awareness for the need of protection against W-A radiation is rising and the claim for W-A or broadband protection can already be seen on sunscreen bottles around the world. Several in v...

X-ray/UV CAMPAIGN ON THE MRK 279 AGN OUTFLOW: CONSTRAINING INHOMOGENEOUS ABSORBER MODELS

We investigate the applicability of inhomogeneous absorber models in the formation of AGN outflow absorption-troughs. The models we explore are limited to monotonic gradients of absorbing column densities in front of a finite emission source. Our main finding is that simple power-law and gaussian distributions are hard pressed to fit the Mrk 279 high-quality UV outflow data. An acceptable fit f...

The Nature of the Uv/x-ray Absorber in Pg 2302+029

We present Chandra X-ray observations of the radio-quiet QSO PG 2302+029. This quasar has a rare system of ultra-high velocity (−56, 000 km s) UV absorption lines that form in an outflow from the active nucleus (Jannuzi et al. 2003). The Chandra data indicate that soft X-ray absorption is also present. We perform a joint UV and X-ray analysis, using photoionization calculations, to detemine the...

The Effects of UV Light on the Chemical and Mechanical Properties of a Transparent Epoxy-Diamine System in the Presence of an Organic UV Absorber

Despite several excellent properties including low shrinkage, good chemical resistance, curable at low temperatures and the absence of byproducts or volatiles, epoxy resins are susceptible to ultra violet (UV) damage and their durability is reduced substantially when exposed to outdoor environments. To overcome this drawback, UV absorbers have been usually used to decrease the rate of UV degrad...