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Cornell engineers have created a deep-ultraviolet laser using semiconductor materials that show great promise for improving the use of ultraviolet light for sterilizing medical tools, purifying water,...
Characterization of Automotive Paint Clear Coats by Ultraviolet Absorption Microspectrophotometry with Subsequent Chemometric Analysis
forensics automative paint clear coats microspectrophotometry
2015/1/7
Clear coats have been a staple in automobile paints for almost thirty years and are of forensic interest when comparing transferred and native paints. However, the ultraviolet (UV) absorbers in these ...
High-Sensitivity Ozone Sensing Using 280 nm Deep Ultraviolet Light-Emitting Diode for Detection of Natural Hazard Ozone
Ozone Sensing Deep Ultra Violet Light Emitting Diode DUV-LED High Sensitivity Long Life Compact
2013/3/11
Recently ozone is one of natural hazards which comes from cars, industry using ozone for sterilization of organic and inorganic materials and for water purification. So, ozone sensing becomes very imp...
The Effect of Ultraviolet and Heat Treatments on Microbial Stability, Antioxidant Activity and Sensory Properties of Ready-to-serve Tropical Almond Drink
Ultraviolet Heat Treatments Antioxidant Activity
2016/6/1
There is a growing trend towards the production of ready to use multifunctional foods which has nutritional and medicinal value as well as good sensory properties. On the other hands, microbial safety...
Ultraviolet Radiation for Microorganism Inactivation in Wastewater
Pseudomonas aeruginosa Inactivation Disinfection Ultraviolet UV Temperature
2013/3/11
The purpose of this research stream is to evaluate the kinetics of bacterial strains of Pseudomonas aeruginosa, to establish the influence of UV doses on the kinetics of disinfection, to study UV-resi...
Fabrication of Microfiber-Based Bragg Gratings with Ultraviolet-Light Exposure
Fiber Bragg gratings Integrated optics devices Microstructure fabrication
2015/5/22
We fabricated microfiber-based Bragg gratings with ultraviolet-light exposure. Bragg reflections are observed for gratings with diameters of several micron-meters. The dependence of Bragg grating char...
Ultra-broadband supercontinuum generation from ultraviolet to 6.28 μm in a fluoride fiber
Supercontinuum generation Fiber materials Nonlinear optics fibers
2015/6/9
We demonstrate ultra-broadband SC generation from UV to 6.28 μm in a 2-cm-long fluoride fiber pumped by a 1450 nm femtosecond laser.
Chemical solution-derived SrMg2(PO4)2:Eu2+ blue phosphor for ultraviolet emitting diodes
SrMg2(PO4) phosphor blue sol–gel
2011/5/9
Eu2+-doped SrMg2(PO4)2 phosphor with blue emission was prepared by the low temperature
chemical solution process using inorganic salts as a starting material. Transparent sol was preheated
at 300 °C...
ZnO films grown by pulsed-laser deposition on soda lime glass substrates for the ultraviolet inactivation of Staphylococcus epidermidis biofilms
pulsed laser deposition zinc oxide ZnO
2010/1/19
We found that a ZnO film of 2 μm thickness which was laser-deposited at room temperature onto a plain soda lime glass substrate, exhibits notable antibacterial activity against a biofilm of Staphyloco...
Interaction of Benzoate-type Ultraviolet Absorbers with Hindered Amine Light Stabilizers
HALS HALS nitrosonium Photo-antioxidant activity Benzoate-type UVA
2009/8/4
The interaction of benzoate-type ultraviolet absorbers (UVA) with hindered amine light stabilizers (HALS) was investigated. Benzoate-type UVA showed antagonism or synergism with HALS, depending on th...
Synergism between Hydrogen Bond-type Ultraviolet Absorbers and Hindered Amine Light Stabilizers
HALS UVA Photo-antioxidant activity Antagonism Synergism
2009/8/4
The synergism of hydrogen bond-type ultraviolet absorbers (UVA), such as phenyl salicylate and benzotriazole type UVA, and hindered amine light stabilizers (HALS) was investigated and compared with t...
Interaction of Hindered Amine Light Stabilizers and Ultraviolet Absorbers
HALS UVA Antagonism Synergism Photo-oxidation Quinone
2009/8/4
The reason is discussed, why ultraviolet absorbers (UVA) having phenolic moiety show the synergism with HALS apparently, on the contrarily to phenolic antioxidants. A HALS nitrosonium is a substrate ...
Influence of Ultraviolet Absorbers on Decomposition of Hydroperoxide by Hindered Amine Light Stabilizers
Hydroperoxide Decomposition HALS UVA Synergism
2009/8/4
The interaction between hindered amine light stabilizers (HALS), and ultraviolet absorbers (UVA) was investigated, in order to clarify the reason why they generally show synergism, although UVA belong...
Mechanism of Asphalt Binder Aging by Ultraviolet Irradiation and Aging Resistance by Adding Carbon Black
Asphalt binder Ultraviolet irradiation Aging Carbon black Carbonyl group
2009/7/24
The components of asphalt binders were separately irradiated with ultraviolet (UV) rays to examine the aging mechanism. The results confirmed that saturates are converted to resins and asphaltenes, r...
Prediction of the Ultraviolet Protection of Cotton Woven Fabrics Dyed with Reactive Dystuffs
ultraviolet protection factor woven fabric construction colour
2009/6/17
Textile materials provide a simple and convenient protection against UV radiation. To assign
the degree of UV radiation protection of textile materials, the Ultraviolet Protection Factor (UPF) is com...