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Records with

  • Keyword = 'Ultraviolet light'.
Records 26 to 50 of 131

2015
Propidium monoazide reverse transcription PCR and RT-qPCR for detecting infectious enterovirus and norovirus
(JOURNAL) [Published : Jul 01, 2015]
Presently there is no established cell line or small animal model that allows for the detection of infectious human norovirus. Current methods based on RT-PCR and RT-qPCR detect both infectious and non-infectious virus and thus the conclusions that may be drawn regarding the publ...
2014
Article "403. Toxicology of Persistent Organic Pollutants (POPs)"
(BOOK CHAPTER) [Published : Dec 01, 2014]
Persistent Organic Pollutants (POPs) are all synthetic chemicals, either intentionally or unintentionally produced/released. Some POPs are pesticides. Others are industrial products or unintended by-products resulting from industrial processes or combustions (see figure 1). POPs ...
Demonstration and Evaluation of Innovative Wastewater Main Rehabilitation Technologies (WERF Report INFR4R11)
(EXTRAMURAL DOCUMENT) [Published : Jun 16, 2014]
The lack of knowledge on the performance of innovative wastewater rehabilitation technologies, specifically for large-diameter pipes, and the limited ability to determine the most cost-effective, long-term rehabilitation methods for wastewater collection systems, has been identif...
Estimation of diffuse attenuation of ultraviolet light in optically shallow Florida Keys waters from MODIS measurements
(JOURNAL) [Published : Jan 01, 2014]
Diffuse attenuation of solar light (Kd, m−1) determines the percentage of light penetrating the water column and available for benthic organisms. Therefore, Kd can be used as an index of water quality for coastal ecosystems that are dependent on photosynthesis, such as the coral ...
Inactivation of bacterial biothreat agents in water, a review
(JOURNAL) [Published : Dec 31, 2014]
Journal article
Reduction of Microbial Contaminants in Drinking Water by Ultraviolet Light Technology: ETS UV MODEL ECP-113-5 (Report and Statement)
(PUBLISHED REPORT) [Published : Nov 18, 2014]
final EPA report to publish on ETV web site
Reduction of Microbial Contaminants in Drinking Water by Ultraviolet Light Technology: ETS UV MODEL UVL-200-4 (Report and Statement)
(PUBLISHED REPORT) [Published : Nov 20, 2014]
Final technical report provides test methods used and verification results to be published on ETV web sites. The ETS UV System Model UVL-200-4 was tested to validate the UV dose delivered by the system using biodosimetry and a set line approach. The set line for 40 mJ/cm2 Red...
2013
Inactivation of Microbiological Contaminants in Drinking Water by Ultraviolet Light Technology: NeoTech Aqua Solutions, Inc.; Ultraviolet Water Treatment System, NeoTech D438™ (Report and VS)
(PUBLISHED REPORT) [Published : Oct 30, 2013]
The NeoTech Aqua Solutions, Inc. D438™ UV Water Treatment System was tested to validate the UV dose delivered by the system using biodosimetry and a set line approach. The set line for 40 mJ/cm2 measured Reduction Equivalent Dose (RED) was based on validation testing at three (3)...
2012
Enumeration of viable and non-viable larvated Ascaris eggs with quantitative PCR
(JOURNAL) [Published : Dec 01, 2012]
Aims: The goal of the study was to further develop an incubation-qPCR method for quantifying viable Ascaris eggs. The specific objectives were to characterize the detection limit and number of template copies per egg, determine the specificity of the method, and test the method w...
Photoenhanced Toxicity of Oil to Larval Fish
(PRESENTATION) [Presented : Jul 02, 2012]
Photoenhanced toxicity is the increase in the toxicity of a chemical in the presence of ultraviolet light (UV), compared to toxicity elicited under conditions of minimal UV. Oil products, weathered oils, combusted oil products, and specific polycyclic aromatic compounds in oil ha...
Photoenhanced toxicity of oil to larval fish - abstract
(PRESENTATION) [Presented : Jul 06, 2012]
Photoenhanced toxicity is the increase in the toxicity of a chemical in the presence of ultraviolet light (UV), compared to toxicity elicited under conditions of minimal UV. A variety of oil products, weathered and chemically dispersed oils, and specific polycyclic aromatic compo...
2011
MEASURING THE IMPACTS OF EXISTING ARTIFICIAL OPTICAL RADIATION AT 3 SITES: A PILOT STUDY OF MILITARY, STUDENT, AND OLDER ADULT HOUSING COMMUNITIES
[Published : Aug 14, 2011]
<p>By measuring and disseminating the impacts of existing artificial optical radiation and by comparing findings to current recommendations, future sustainable lighting choices for housing of military personnel, university students, and older adults will be enabled. </p>
2010
Persistence Testing of Brucella suis on Outdoor Materials
(PUBLISHED REPORT) [Published : Apr 30, 2010]
Report
2008
Assessing the effectiveness of low-pressure ultraviolet light for inactivating Mycobacterium avium complex (MAC) micro-organisms
(JOURNAL) [Published : Nov 01, 2008]
Aims: To assess low-pressure ultraviolet light (LP-UV) inactivation kinetics of Mycobacterium avium complex (MAC) strains in a water matrix using collimated beam apparatus. Methods and Results: Strains of M. avium (n = 3) and Mycobacterium intracellulare (n = 2) were exposed t...
COMPARATIVE DISINFECTION EFFICIENCY OF PULSED AND CONTINUOUS-WAVE UV IRRADIATION TECHNOLOGIES
(JOURNAL) [Published : Jun 01, 2008]
Pulsed UV (PUV) is novel UV irradiation system that is a non-mercury lamp based alternative to currently used continuous-wave systems for water disinfection. To compare the polychromatic PUV irradiation disinfection efficiency with that from continuous wave monochromatic low-pre...
Environmental Technology Verification: Biological Inactivation Efficiency by HVAC In-Duct Ultraviolet Light Systems--American Ultraviolet Corporation, DC24-6-120 [EPA600etv08005]
(ETV DOCUMENT) [Published : Feb 04, 2008]
The Air Pollution Control Technology Verification Center (APCT Center) is operated by RTI International (RTI), in cooperation with EPA's National Risk Management Research Laboratory. The APCT Center conducts verifications of technologies that clean air in ventilation systems, inc...
2007
Environmental Technology Verification: Supplement to Test/QA Plan for Biological and Aerosol Testing of General Ventilation Air Cleaners; Bioaerosol Inactivation Efficiency by HVAC In-Duct Ultraviolet Light Air Cleaners
(ETV DOCUMENT) [Published : Dec 20, 2007]
The Air Pollution Control Technology Verification Center has selected general ventilation air cleaners as a technology area. The Generic Verification Protocol for Biological and Aerosol Testing of General Ventilation Air Cleaners is on the Environmental Technology Verification we...
REMOVAL OF SYNTHETIC ORGANIC CHEMICAL CONTAMINANTS IN DRINKING WATER: RASCO, INC. ADVANCED SIMULTANEOUS OXIDATION PROCESS (ASOP)
(ETV DOCUMENT) [Published : Nov 09, 2007]
The RASco, Inc. ASOP Drinking Water Treatment Module was tested at NSF’s Laboratory for the reduction of the following chemicals of concern: aldicarb, benzene, carbofuran, chloroform, dichlorvos, dicrotophos, methomyl, mevinphos, nicotine, oxamyl, paraquat, phorate, sodium fluor...
2006
ASSESSING THE EFFECTIVENESS OF LOW PRESSURE ULTRAVIOLET LIGHT FOR INACTIVATING HELICOBACTER PYLORI
(JOURNAL) [Published : May 01, 2006]
Three strains of <EM>Helicobacter pylori</EM> were exposed to ultraviolet (UV) light from a low-pressure source to determine log inactivation versus applied fluence. Results indicate that <EM>H. pylori</EM> is readily inactivated at UV fluences typically used in water treatment r...