Resource Type
Degree Department
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Hazard Assessment of Chemical Air Contaminants Measured in Residences
Identifying air pollutants that pose a potential hazard indoors can facilitate exposure mitigation. In this study, we compiled summary results from 77 published studies reporting measurements of chemical pollutants in residences in the United States and in countries with similar lifestyles. These data were used to calculate representative mid-range and upper bound concentrations relevant to chronic exposures for 267 pollutants and representative peak concentrations relevant to acute exposures for 5 activity-associated pollutants. Representative concentrations are compared to available chronic and acute health standards for 97 pollutants. Fifteen pollutants appear to exceed chronic health standards in a large fraction of homes. Nine other pollutants are identified as potential chronic health hazards in a substantial minority of homes and an additional nine are identified as potential hazards in a very small percentage of homes. Nine pollutants are identified as priority hazards based on the robustness of measured concentration data and the fraction of residences that appear to be impacted: acetaldehyde; acrolein; benzene; 1,3-butadiene; 1,4-dichlorobenzene; formaldehyde; naphthalene; nitrogen dioxide; and PM{sub 2.5}. Activity-based emissions are shown to pose potential acute health hazards for PM{sub 2.5}, formaldehyde, CO, chloroform, and NO{sub 2}.
Date:
May 10, 2010
Creator:
Logue, J.M.; McKone, T.E.; Sherman, M. H. & Singer, B.C.
System:
The UNT Digital Library
On the Theory of the Modulation Instability in Optical Fibre Amplifiers
The modulation instability (MI) in optical fiber amplifiers and lasers with anomalous dispersion leads to CW radiation break-up and growth of multiple pulses. This can be both a detrimental effect limiting the performance of amplifiers, and also an underlying physical mechanism in the operation of MI-based devices. Here we revisit the analytical theory of MI in fiber optical amplifiers. The results of the exact theory are compared with the previously used adiabatic approximation model and the range of applicability of the later is determined.
Date:
May 10, 2010
Creator:
Turitsyn, S K; Rubenchik, A M & Fedoruk, M P
System:
The UNT Digital Library
Solubility of Anthracene in Binary and Ternary Mixtures of Cyclohexanone, Ethyl Acetate, and Methanol at 298.2 K
This article discusses the solubility of anthracene in binary and ternary mixtures of cyclohexanone, ethyl acetate, and methanol at 298.2 K.
Date:
May 10, 2010
Creator:
Jouyban, Abolghasem; Manzoori, Jamshid L.; Panahi-Azar, Vahid; Soleymani, Jafar; Fakhree, Mohammad Amin Abolghassemi; Shayanfar, Ali et al.
System:
The UNT Digital Library
Hot Electron Measurements in Ignition Relevant Hohlraums on the National Ignition Facility
None
Date:
May 10, 2010
Creator:
Dewald, E L; Thomas, C; Hunter, S; Divol, L; Meezan, N; Glenzer, S H et al.
System:
The UNT Digital Library
Thomson-Scattering Measurements in the Collective and Non-collective Regimes in Laser Produced Plasmas
None
Date:
May 10, 2010
Creator:
Ross, J S; Glenzer, S H; Palastro, J P; Pollock, B B; Price, D; Tynan, G R et al.
System:
The UNT Digital Library
Thomson Scattering on Inhomogeneous Targets
None
Date:
May 10, 2010
Creator:
Thiele, R; Sperling, P; Chen, M; Bornath, T; Faustlin, R R; Fortmann, C et al.
System:
The UNT Digital Library
Time-Resolved Microscopic Imaging of Laser-Induced Material Modifications in Optical Materials
None
Date:
May 10, 2010
Creator:
Negres, R A
System:
The UNT Digital Library
4w Thomson Scattering Probe for High-density Measurements at Titan
None
Date:
May 10, 2010
Creator:
Ross, J. S.; Kline, J. L.; Yang, S.; Henesian, M.; Weiland, T.; Price, D. et al.
System:
The UNT Digital Library