Snow and Ultraviolet Rays

SOFT X-RAYS AND EXTREME ULTRAVIOLET RADIATION Principles and Applications

Soft X-rays and Extreme Ultraviolet Radiation: Principles and.

1.1 (a) Confirm that for a photon energy h ω, with corresponding wavelength λ in vacuum, the two are related by eV nm 1239.842 ⋅ = ⋅ λ ω h Values for physical constants are given in Appendix A, page 419. (b) What wavelength in nm corresponds to photons of energy 543.1 eV? (c) What wavelengths in vacuum are associated with the K and L-absorption edges of neon, chlorine, cobalt, and ruthenium? 1....

Immunizing potential of vaccinia virus inactivated by ultraviolet rays

[1] In a precedent paper (1*), we have indicated that the vaccinia infection experiments of the rabbit skin can be inhibited by the intradermal injection of the equivalent virus inactivated by ultraviolet irradiation. [2] We have tried next, on one hand, to see if the complete virus is the sole inhibitory factor contained in the virulent materiel. [3] On the other hand, regarding to know if it ...

inactivation of model viruses and bacteria in human fresh frozen plasma using riboflavin and long wave ultraviolet rays

background and objectives: pathogen reduction technologies are among methods to eliminate transfusion transmitted infections. mirasol method using riboflavin in combination with ultraviolet rays is one of them. the aims of this study were to investigate the effectiveness of mirasol method to inactivate some model pathogens as well as examination of the sensitivity of plasma proteins after treat...

Visible and near-ultraviolet absorption spectrum of ice from transmission of solar radiation into snow.

Snow is a scattering-dominated medium whose scattering is independent of wavelength at 350-600 nm. The attenuation of solar radiation in snow can be used to infer the spectral absorption coefficient of pure ice, by reference to a known value at 600 nm. The method is applied to clean Antarctic snow; the absorption minimum is at 390 nm, and the inferred absorption coefficient is lower than even t...