Penetration of UV radiation through the atmosphere depends on atmospheric ozone and particulate matter in the form of clouds and aerosols. Ozone absorbs strongly in the ultraviolet part of the spectrum and weakly in the visible. Particulate clouds interact significantly with solar radiation throughout ...
[On particular physiological significance of ultraviolet part of spectrum for phototherapy successfullness]Igor_PudikovVladimir Dorokhov
A number of technical developments have enabled the fabrication of LEDs based on group three nitrides (III-nitrides) that emit in the UV part of the spectrum, providing useful tools for a wealth of applications in optoelectronic systems. 展开 关键词:...
Ultraviolet radiation,that portion of the electromagnetic spectrum extending from the violet, or short-wavelength, end of the visible light range to the X-ray region. Its wavelengths are between 400 and 10 nanometers. Learn more about ultraviolet radiati
The spectra are compared to those of related thioethers and ketones, and are interpreted in terms of valence‐shell and Rydberg transitions. In the 41 000–46 000 cm−1 part of the spectrum the σ*←? (lone pair) and 4s←? transitions give clearly separate bands for both compounds....
We analyze the X-ray spectrum of the quasar PG 1211 + 143 observed with the CCD and grating spectrometers on board XMM-Newton. Using an ion-by-ion fitting model, we find an outflow component of about 3000 km s~(-1), which includes absorp... S Kaspi,E Behar - 《Astrophysical Journal...
spectrum of monolayer MoS2with the smaller band gap exhibits the rich second-order phonon structures42. Many high energy absorption peaks for monolayer WS2were observed in the ultraviolet regime, showing much larger intensity than those of the A and B excitons5,20, which is due to the nesting ...
It is also the deepest part of the UV spectrum where work can be done at atmosphere without side efforts. 1.2.3 Mid-UV The “mid-UV” is the region of the ultraviolet spectrum from 280 to 315 nm, so-called because it is midway between deep-UV and near-UV. 1.2.4 Near-UV The “...
It is true that the UV spectrum of steviol and its glycosides show a higher absorption at 190 than at 200 and 210 nm, but this does not necessarily mean that UV detection in HPLC is more sensitive at the lower wavelengths just because the absorption of the eluents at lower wavelengths ...
These results show that the SrSiO:Ce,Ybphosphor has broadband absorptions peaking at 415 nm which can efficiently facilitate the UV-blue part of the solar spectrum when compared with SrSiO:Yb. Furthermore, it can give an intense emission around 1000 nm via an energy transfer process from ...