In Europe, ultraviolet (UV) B phototherapy is being increasingly used for the treatment of skin disease. While this is in part due to an increased awareness of the cancer risks of photochemotherapy (PUVA) there is also evidence that a ‘new’ UVB phototherapy source (TL-01) is more effective than conventional broadband UVB sources, and is possibly as effective as PUVA. A working party of the Brit...

Solar irradiance (W/m2) and downwelling diffuse attenuation coefficients (Kd; 1/m) were determined in several locations in Prince William Sound (AK, USA) between April 2003 and December 2005 to assess temporal and spatial variation in solar radiation and the risks of photo-enhanced toxicity from spilled oil. Weekly irradiance measurements of surface visible light, ultraviolet B (UVB), and ultra...

Our knowledge of the effects of increased levels of ultraviolet-B radiation (UV-B) on plant fitness is limited mainly to yield studies in a few crop species. Previous greenhouse and garden studies of Brassica have found greater detrimental effects of UV-B on fitness in gardens than in the greenhouse, suggesting the possibility that additional stresses in the field decrease the ability of Brassi...

Articles you may be interested in Effect of vacuum-ultraviolet irradiation on the dielectric constant of low-k organosilicate dielectrics Appl. Effects of plasma and vacuum-ultraviolet exposure on the mechanical properties of low-k porous organosilicate glass J. Bandgap measurements of low-k porous organosilicate dielectrics using vacuum ultraviolet irradiation Appl. The effects of plasma expos...

This article describes data on the intensity of ultraviolet B (UVB) radiation collected during field questionnaire-based surveys in Athens, Greece. The surveys were conducted over 11 days of July and October 2010 at three different urban, outdoor sites. A total of 1104 interviews were conducted. The participants were asked to report whether they felt they got a sunburn at the moment of the inte...

Phototherapy using sunburn spectrum ultraviolet radiation (UVB) is now a frequently utilized treatment for psoriasis that is extensive or has not responded to topical preparations. Four university centers performed a prospective randomized clinical trial to compare remission times of patients with psoriasis who continued UVB phototherapy after initial clearing with this therapy and patients who...

Ancestors of vertebrates used ultraviolet vision. Some descendants preserved ultraviolet vision, whereas some others replaced it with violet vision, and then, some of avian lineages reinvented ultraviolet vision. Ultraviolet (absorption at ∼360 nm) and violet (410-440 nm) sensitivities of visual pigments are known to be affected by around 20 amino acid substitutions. The present quantum mechani...

In this study, we demonstrate the capacity for damselfish (green chromis, Chromis viridis) to discriminate between different e-vector orientations of ultraviolet polarized light. We examined the ability of green chromis to resolve small differences in e-vector orientation of ultraviolet polarized light. Fish were successfully trained to swim towards an e-vector orientation of polarized light us...

The advantages and disadvantages of sources emitting either a continuous or a discontinuous spectrum are considered in connection with the use of such lamps as a standard of ultraviolet radiation. It is shown that because of the high intensity and favorable distribution of the ultraviolet emission lines at 2967 to 3132 A, the quartz mercury-arc lamp is well adapted for standardizing photoelectr...