Zobrazeno 1 - 10
of 12
pro vyhledávání: '"William F. Barnard"'
Publikováno v:
Journal of Geology & Geosciences.
A pilot study was conducted to test a protocol for collecting data useful for identifying local factors affecting exposure to ultraviolet-B radiation (UV-B). A trained technician followed a prepared script through a series of microenvironments repres
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc4b80928f02653dd97c97ae42c4f0f2
https://doi.org/10.4172/2329-6755.1000136
https://doi.org/10.4172/2329-6755.1000136
Publikováno v:
The Chemical Educator. 3:1-14
This paper describes a simple method for the evaluation of the effectiveness of a sunscreen product. It illustrates the basic principle of semiconductor (such as TiO2) band gap, band-gap excitation, conduction-band electron trapping, and its applicat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ca2bef934edfb21593846a20878444c
https://doi.org/10.1007/s00897980187a
https://doi.org/10.1007/s00897980187a
Autor:
Sethu Raman, Jeral Garcia Estupinan, William F. Barnard, Gennaro H. Crescenti, John J. Streicher
Publikováno v:
Journal of Geophysical Research: Atmospheres. 101:16807-16816
An experiment was conducted over a 6-month period in Research Triangle Park, North Carolina, to investigate the effects of clouds and haze on ultraviolet (UV) radiation. Data were collected using a Yankee Environmental Systems UVB-1 pyranometer, an E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e55db486d364b800990159e8777341fa
https://doi.org/10.1029/96jd01170
https://doi.org/10.1029/96jd01170
Publikováno v:
Analytica Chimica Acta. 318:103-112
A dosimeter for UVB radiation was developed based on photoinduced dimerization of thymine in microemulsion. The UV absorption change of the dosimeter can be monitored spectroscopically. The sensitivity of the dosimeter can be adjusted by varying the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f9c7a9be8ebf424e060f9cb0fb6a28b
https://doi.org/10.1016/0003-2670(95)00429-7
https://doi.org/10.1016/0003-2670(95)00429-7
Publikováno v:
Atmospheric Environment. Part A. General Topics. 26:191-194
Described are compact, lightweight, rugged, and simple-to-operate pollutant generating systems that can be used to calibrate and to audit SO 2 and possibly other ambient air monitors located at inaccessible sites. The field and laboratory experiments
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d1d253c53c3577a34b2d8d6666036a8
https://doi.org/10.1016/0960-1686(92)90270-u
https://doi.org/10.1016/0960-1686(92)90270-u
Autor:
Larry T. Cupitt, William F. Barnard
Publikováno v:
Stratospheric Ozone Depletion/UV-B Radiation in the Biosphere ISBN: 9783642788864
The U.S. Environmental Protection Agency (EPA) has initiated a program to develop and operate a monitoring network to measure ultraviolet (UV) radiation flux at the earth’s surface and to provide for public awareness of exposure to UV radiation thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f07f2af590d3cccdeda4a99a43d562c
https://doi.org/10.1007/978-3-642-78884-0_40
https://doi.org/10.1007/978-3-642-78884-0_40
Publikováno v:
Optical Remote Sensing of the Atmosphere.
As part of the Environmental Protection Agency's stratospheric ozone program, the Atmospheric Research and Exposure Assessment Laboratory of the EPA (AREAL) has been given the responsibility of standardizing absolute measurements of incident ultra-vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbe5631d40ce86ed1d7c1d8d4183a769
https://doi.org/10.1364/orsa.1990.wd30
https://doi.org/10.1364/orsa.1990.wd30
Publikováno v:
Eos, Transactions American Geophysical Union. 76:113-113
Unusually low total ozone was observed over the south-central United States during November 1994. The region of low ozone was associated with a persistent subtropical jet stream over the southeastern United States, which was accompanied by significan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79067ab51771786a0264e267992f0bac
https://doi.org/10.1029/95eo00057
https://doi.org/10.1029/95eo00057
Publikováno v:
Environmental Pollution. 53:412-415
Since 1981 the Environmental Monitoring Systems Laboratory (EMSL) of the Environmental Protection Agency (EPA) at Research Triangle Park, North Carolina has been conducting performance audits of the ambient air analyzers used in the National Crop Los
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79b8704e30756f35d650b5f09a422545
https://doi.org/10.1016/0269-7491(88)90052-8
https://doi.org/10.1016/0269-7491(88)90052-8
Publikováno v:
JAPCA. 37:384-385
Two performances audits of calibration gas mixtures were conducted by RTI in 1985 to assess the accuracy of certified concentrations assigned by speciality gas producers. The first audit involved the purchase and analysis of EPA Protocol No. 1 gases
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cd13f59e46e0e74b14521c8675bf861
https://doi.org/10.1080/08940630.1987.10466233
https://doi.org/10.1080/08940630.1987.10466233