Last edited by Bat
Tuesday, July 28, 2020 | History

3 edition of Surface evaluation of UV-degraded contamination found in the catalog.

Surface evaluation of UV-degraded contamination

Surface evaluation of UV-degraded contamination

  • 88 Want to read
  • 36 Currently reading

Published by Center for Applied Optics, University of Alabama in Huntsville, National Aeronautics and Space Administration, National Technical Information Service, distributor in Huntsville, AL, [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Ultraviolet radiation.,
  • Contamination (Technology)

  • Edition Notes

    Statementprepared by Robert Connatser, James B. Hadaway.
    SeriesNASA contractor report -- NASA CR-184500.
    ContributionsHadaway, James B., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15370615M

    Microbial surface contamination of equipment or of food contact material is a recurring problem in the food industry. Spore-forming bacteria are far more resistant to Contamination Characteristic of Paraquat in Surface Water The bipyridylium herbicide was found in the studied areas. Concentrations of paraquat in the stream water were given in Table 1 with range from to μ g/L. Median paraquat concentrations in groundwater in Cun Pheo, Pieng Ve, Xam Khoe, and Mai Hich were , , , and

    @article{osti_, title = {Use of Selenastrum capricornutum to assess the toxicity potential of surface and ground-water contamination caused by chromium waste}, author = {Greene, J C and Miller, W E and Debacon, M and Long, M A and Bartel0s, C L}, abstractNote = {United Chrome Products, Inc. (Corvallis, OR), discharged liquid chrome-plating wastes into an on-site dry well from to   Ultraviolet (UV) germicidal air disinfection is an engineering method used to control the airborne transmission of pathogenic microorganisms in high-risk settings. Despite the recent emergence of respiratory viral pathogens such as SARS and avian influenza viruses, UV disinfection of pathogenic viral aerosols has not been examined. Hence, we characterized the UV disinfection of viral aerosols

    UV radiation covers part of the electromagnetic spectrum from to nm and is distinguished as UV-A ( to nm), UV-B ( to nm), and UV-C ( to nm). Among them, surface disinfection by nm UV irradiation (UV-C) has been widely utilized   Jun. 23, EUVL Workshop , Maui 1 Novel Ozone-based Cleaning Technique for. for EUV Masks and Optics Carbon. Carbon Contamination. Iwao Nishiyama, Toshihisa Anazawa, Noriaki Takagi, Osamu Suga


Share this book
You might also like
ILL - Beginning topology

ILL - Beginning topology

Learning to lead.

Learning to lead.

Motels

Motels

Leading an evangelistic youth ministry

Leading an evangelistic youth ministry

prophet speaks

prophet speaks

famous song called - The wedding of Ballyporeen

famous song called - The wedding of Ballyporeen

Trade Policy Review (Gatt) Czech Republic, 1996 (2 Volume Set (Trade Policy Review)

Trade Policy Review (Gatt) Czech Republic, 1996 (2 Volume Set (Trade Policy Review)

Air pollution

Air pollution

Applications for planning permission 2002

Applications for planning permission 2002

The Marshal Of Lawless

The Marshal Of Lawless

Surface evaluation of UV-degraded contamination Download PDF EPUB FB2

contract: 1) contamination testing and evaluation, 2) UV irradiation testing, and 3) surface evaluation testing. Contamination testing was generally performed in the In-Situ Contamination Effects Facility at Marshall Space Flight Center (MSFC).

UV irradiation testing was also performed primarily at MSFC, utilizing facilities :// Get this from a library. Surface evaluation of UV-degraded contamination. [Robert Connatser; James B Hadaway; United States. National Aeronautics and Space Administration.] Surface evaluation of UV-degraded contamination.

By James B. Hadaway and Robert Connatser. Abstract. Three different areas of work were accomplished under this contract: (1) contamination testing and evaluation; (2) UV irradiation testing; and (3) surface evaluation testing. Contamination testing was generally performed in the In-Situ   The surface water collected m upstream from the WWTPs served as field blanks.

None of the field blanks showed detection of any of the analytes, indicating that there was no cross-contamination during sample collection and also suggesting that the method is not susceptible to   Developments in Surface Contamination and Cleaning: Methods for Surface Cleaning, Volume 9, part of the Developments in Surface Contamination and Cleaning series provide a state-of-the-art guide to the current knowledge on the behavior of film-type and particulate surface contaminants and their associated cleaning methods.

This newest volume in the series discusses methods of surface   Trials have shown that some UV devices can decrease surface contamination and reduce healthcare-associated infections. Despite substantial marketing of these devices for use in healthcare settings, few data are available regarding the doses of UV-C necessary to yield desired reductions in healthcare pathogens and the ability of mobile devices   Background PCR amplification of minute quantities of degraded DNA for ancient DNA research, forensic analyses, wildlife studies and ultrasensitive diagnostics is often hampered by contamination problems.

The extent of these problems is inversely related to DNA concentration and target fragment size and concern (i) sample contamination, (ii) laboratory surface contamination, (iii) ?id=/ The ultraviolet (UV) lamp is the most critical component of any UVGI air or surface disinfection system.

UV lamps come in many shapes, sizes, and UV output power levels, and they may produce   UV light built into a plate scanner was able to eliminate both types of micro-organisms in both concentrations after activated for about 4 min.

Ethanol degraded the plates to a larger extent than did 2-propanol, but even 2-propanol to some extent degraded Vista plates, but not Digora ://   Evaluation of the effect of UV radiation on polycarbonate sheets was achieved by aging the samples using an air-rich environment and a source of UV that simulated the sunlight spectra.

Commercial Lexan® bisphenol A polycarbonate film, manufactured by GE Plastics, was used in Doxorubicin Stability in Syringes and Glass Vials and Evaluation of Chemical Contamination ABSTRACT The concentration of reconstituted doxorubicin hydrochloride solution (2 mg/mL) was evaluated during days storage in original manufacturer’s vials and two different brands of syringes (Terumo, Monoject) at 4°C and 23°://   Soil pollution is defined as the build-up in soils of persistent toxic compounds, chemicals, salts, radioactive materials, or disease causing agents, which have adverse effects on plant growth and animal health [].Soil is the thin layer of organic and inorganic materials that covers the Earth's rocky ://   Book References: UV Ozone Cleaner.

Microdevices in Biology and Medicine Yaakov Nahmias, ‎Sangeeta Bhatia - - isbn= An alternative method using a commercial UV-ozone (UV O3) source can be used with equal effect as outlined below.

Device bonding (with UV O3 surface treatment) Anderson et al. [2] and other researchers [3][4] [5] [6][7][8][9] examined the sensitivity of various bonded-joints and coatings to contamination of the adherents' surface, by simulating surface   Purchase Developments in Surface Contamination and Cleaning, Volume 8 - 1st Edition.

Print Book & E-Book. ISBN  The extent of these problems is inversely related to DNA concentration and target fragment size and concern (i) sample contamination, (ii) laboratory surface contamination, (iii) carry-over contamination, and (iv) contamination of :// The largest Brazilian coal mine, called Candiota mine, is located in South Brazil, with an estimated reserve about billion tons.

Since latean experiment located at a reclaimed site in a coal mining area was conducted, in which a research group from the Federal University of Pelotas has been conducting a long-term experiment on soil quality with different plants species, such as   Both the IR heater and UV lamp were obtained from IWASAKI Electric Co.

Ltd. (Saitama, Japan). The decontamination test was conducted after 2 min of initial turning on to allow stable outputs from both the IR heater and the UV lamp. The distance from the IR heater and UV lamp to the surface of fig fruit was set at 80 ://   GSFC Code Contamination and Thermal Coatings Branch attempts to develop end NS43G historic and present day samples degraded similarly in the high energy optical degradation of samples that included the UV component, as most external surface will be exposed to direct solar/UV at some point on orbit.

Summing the   Fuel sorption kinetics on photo-oxidized PE-HD. Several studies showed that semi-crystalline PE-HD can absorb fuel, e.g.

petroleum die19,20,23 and BD 17,18,19,Changes of the fuel. The surface morphology of the HDPE and LDPE films degraded by the Penicillium oxalicum NS4 and Penicillium chrysogenum NS10 strains were analyzed. In In this paper comprehensive investigations of laser induced deposit formation are reported.

In a high vacuum chamber (p Lower room UV systems are not common although they have been used in hospitals in the past. This chapter provides basic design information for each type of surface disinfection system based on theoretical analysis and field testing results.

Good design