Results 261 to 270 of about 1,232,078 (296)

Degradation of antipyrine by UV, UV/H2O2 and UV/PS

Journal of Hazardous Materials, 2013
Degradation of antipyrine (AP) in water by three UV-based photolysis processes (i.e., direct UV, UV/H₂O₂, UV/persulfate (UV/PS)) was studied. For all the oxidation processes, the AP decomposition exhibited a pseudo-first-order kinetics pattern. Generally, UV/H₂O₂ and UV/PS significantly improved the degradation rate relevant to UV treatment alone.
Chaoqun Tan, Naiyun Gao, Yang Deng, Yongji Zhang, Minghao Sui, Jing Deng, Shiqing Zhou   +6 more
openaire   +1 more source

Removal of amoxicillin by UV and UV/H2O2 processes

Science of The Total Environment, 2012
The degradation of the β-lactam antibiotic amoxicillin (AM) treated with direct UV-C and UV/H(2)O(2) photolytic processes was investigated in the present study. In addition, the antibacterial activity of the solution treated by UV/H(2)O(2) advanced oxidation was compared with AM solution treated with ozone.
Yeon Jung, Jung, Wan Gi, Kim, Yeojoon, Yoon, Joon-Wun, Kang, Young Min, Hong, Hyun Wook, Kim   +5 more
openaire   +2 more sources

To UV or not to UV

Physics World, 2015
In reply to Richard Corfield's article "Through a glass, darkly" (Features, June pp24–27) on potential future applications for light-emitting diodes (LEDs) in the ultraviolet (UV) range.
openaire   +1 more source

UV prognosis and UV index services in Europe

Melanoma Research, 1996
The ultraviolet radiation (UV) has always been an environmental factor for life on earth. UV is the nonvisible short-waved part of the optical spectrum between 100 and 400 nm wavelength. The sun is the most important source of UV, while the atmosphere depending on the position of the sun, is influencing the intensity of radiation that is reaching the ...
G. Jendritzky, H. Staiger, K. Bucher
openaire   +1 more source

Predicting UV sky for future UV missions

Astronomy and Computing, 2013
Abstract Software simulators are now widely used in all areas of science, especially in application to astronomical missions: from instrument design to mission planning, and to data interpretation. We present a simulator to model the diffuse ultraviolet sky, where the different contributors are separately calculated and added together to produce a ...
Margarita Safonova, Rekhesh Mohan, A. G. Sreejith, Jayant Murthy   +3 more
openaire   +1 more source

IR/UV and UV/UV double-resonance study of guaiacol and eugenol dimers

The Journal of Chemical Physics, 2005
Guaiacol (2-methoxyphenol) and eugenol (4-allyl-2-methoxyphenol) molecules are biologically active phenol derivatives with an intramolecular −OH⋯OCH3 hydrogen bond (H bond). Pulsed supersonic expansions of mixtures of either of the two molecules with He yield weakly bound homodimers as well as other higher-order complexes. A number of complementary and
Asier, Longarte, Carolina, Redondo, José A, Fernández, Fernando, Castaño   +3 more
openaire   +2 more sources

Histological changes produced in skin by equally erythemogenic doses of UV-A, UV-B, UV-C and UV-A with psoralens

British Journal of Dermatology, 2006
The sequential light microscopic histological changes produced in human skin by a single exposure of UV-A, UV-B, UV-C and oral 8-methoxypsoralen plus UV-A (PUVA) causing approximately equal degress of delayed erythema response, have been evaluated. UV-C and UV-B affect the epidermis to a greater degree than UV-A, while UV-A affects the dermis to a ...
R, Rosario, G J, Mark, J A, Parrish, M C, Mihm   +3 more
openaire   +2 more sources

Degradation of antipyrine by UV, UV/H₂O₂ and UV/PS.

Journal of hazardous materials, 2014
Degradation of antipyrine (AP) in water by three UV-based photolysis processes (i.e., direct UV, UV/H₂O₂, UV/persulfate (UV/PS)) was studied. For all the oxidation processes, the AP decomposition exhibited a pseudo-first-order kinetics pattern. Generally, UV/H₂O₂ and UV/PS significantly improved the degradation rate relevant to UV treatment alone.
Chaoqun, Tan, Naiyun, Gao, Yang, Deng, Yongji, Zhang, Minghao, Sui, Jing, Deng, Shiqing, Zhou   +6 more
openaire   +1 more source

Wavelength Measurements in the UV and Vacuum UV

1976
The NPL is using a Michelson Interferometer for the measurement of wavelengths in the UV and VUV. The interferogram produced by a particular line is examined at a number of widely separated path differences by scanning over a short distance (1 to 4 fringes), so as to obtain the visibility and also the phase relative to that of a reference wavelength ...
G. H. C. Freeman, Vera P. Matthews
openaire   +1 more source

Degradation of antibiotics norfloxacin by Fenton, UV and UV/H2O2

Journal of Environmental Management, 2015
This study aimed to evaluate the degradation of the antibiotic norfloxacin, using direct photolysis (UV), photolysis with hydrogen peroxide (UV/H2O2) and Fenton's oxidation processes. Initially, it was evaluated the behavior of the antibiotic norfloxacin on direct photolysis, in order to see if the process could be a pertinent way to eliminate the drug
Lucilaine Valéria de Souza, Santos, Alexandre Moreira, Meireles, Liséte Celina, Lange   +2 more
openaire   +2 more sources