detection frequencies and median concentrations for selected volatile organic compounds

... factor ~2 for RA and ~1.7 for HT), and for the femurs RA plans were generally better than HT for the bladder (below 20 Gy), equivalent to HT for the rectum and the uterus, and inferior to HT for the ... coronal and sagittal views for RA, HT and IMPT for Patient Figure Dose distributions in axial coronal and sagittal views for RA, HT and IMPT for Patient Dose distributions in axial coronal and sagittal ... coronal and sagittal views for RA, HT and IMPT for Patient Dose distributions in axial coronal and sagittal views for RA, HT and IMPT for Patient Figure Dose distributions in axial coronal and sagittal...

Ngày tải lên: 09/08/2014, 09:22

... Installation and Sampling Procedures Chemical Analysis Chemical characterization of water samples Volatile organic compounds Nonvolatile organic compounds RESULTS AND DISCUSSION Volatile Organic Compound ... for volatile organic compounds is their loss from the sample before analysis To be conservative, we defined the optimal time for sampling for volatile organic compounds as the time when their concentrations ... before and 24 hours after purging for analysis of nonvolatile compounds to determine whether purging had affected these compounds Time-series analyses were not possible for the nonvolatile compounds...

Ngày tải lên: 05/03/2014, 21:20

... that is clean and safe for drinking and recreation and that is suitable for industry, irrigation, and habitat for fish and wildlife Escalating population growth and increasing demands for the multiple ... elsewhere.(19) For those compounds with Federal drinking-water standards, VOC concentrations in samples from domestic and public wells were compared to USEPA MCLs Concentrations for 15 unregulated compounds ...   Detection of VOCs differed markedly between and within principal aquifers The two clusters of relatively large detection frequencies (in the New England and Mid-Atlantic States and in California...

Ngày tải lên: 14/03/2014, 19:20

... commencing with section 94500, and (2) low vapor pressure -volatile organic compounds (LVP-VOC) as that term is defined in section 94508(a), and (3) the reactive organic compounds (ROC) contained in ... Appendix A for metal aerosol container) or ASTM D 3063-94 (as modified in Appendix A for glass aerosol container) The propellant portion is analyzed for reactive organic compounds and other compounds ... METHOD 310 DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS APPLICABILITY 1.1 This...

Ngày tải lên: 14/03/2014, 20:20

... inflammatory and oxidative lung processes, and different volatile organic compounds (VOCs) of endogenous or exogenous origin have been analyzed to study lung diseases [1] and characterize environmental and ... n-heptane-d16 and styrened8 methanolic solution (1.5 × 10-5 M) was added to each sample as internal standard (IS) for respectively aliphatic and aromatic compounds The exhaled VOCs and IS were ... Hoc test for benzene and toluene, Kruskal-Wallis test followed by Dunn's Post Hoc test for all the other VOCs were performed ethylbenzene and styrene levels than the COPD patients, and significantly...

Ngày tải lên: 12/08/2014, 18:21

Ngày tải lên: 30/08/2014, 15:17

... ortho-, and para-xylene) Xylene is mostly a human-made chemical Chemical industries produce xylene from petroleum Xylene also occurs naturally in petroleum and coal tar and is formed during forest ... during forest fires Xylene is used as a solvent and in the printing, rubber, and leather industries It is used as a cleaning agent and a thinner for paint and varnishes Xylene is a major component ... difficulties, stomach discomfort, and changes in the liver and kidneys Studies of humans and animals have shown that xylene causes cancer, but these studies did not provide enough information to conclude...

Ngày tải lên: 14/02/2014, 03:20

... Generate a random series r with the same length as c (7292 elements) and variance νr2 ) (b) Perform FFT on c and r, and calculate their magnitude spectra and call them mfc and mfr (c) Plot mfc and mfr, ... for the data in this study was from 08/20/00 to 09/08/00, and the most sampling frequencies were about 1/4-6 min-1, but the frequencies for some periods were min-1 All the samples were used for ... plot for this source shows a broad contribution from the northwest and a spike in the south The motor vehicles on highways 225 and 146 and Spencer Hwy may increase the concentrations of c9- and...

Ngày tải lên: 22/03/2014, 14:20

... indicators for assessing the effects of volatile organic compounds (VOCs) in indoor air on comfort and health is reviewed Advantages and disadvantages of a TVOC (Iota1 Volatile Organic Compounds) ... Classzjication of indoor organic pollutants (WHO, 1989) Category Description Abbreviation Very volatile (gaseous) organic compounds VVOC Volatile organic compounds VOC organic compounds associated ... used for sampling, the sampling rate and volume, and the separation and detection system For all these reasons, published TVOC data are often not comparable and, consequently, there is a need for...

Ngày tải lên: 28/03/2014, 19:20

... specifically on the characterization of volatile organic compounds (VOCs) in the MCMA, both on the ground and aloft and on the emission, transport, and transformation of VOCs downwind of the metropolitan ... individual and classes of VOC species This will be used to help understand the chemical transformation of air parcels as they are exported out of and downwind of the MCMA For organic compounds ... 32 compounds TOGA targeted included OVOC, NMHC, halogenated organic compounds and acetonitrile Simultaneous measurements were obtained for all compounds every 2.8 Measurement comparisons for...

Ngày tải lên: 28/03/2014, 20:20

Ngày tải lên: 12/04/2015, 14:24

... Method 5035, “Closed-System Purgeand-Trap and Extraction for Volatile Organics in Soil and Waste Samples,” and Method 5021, Volatile Organic Compounds in Soils and Other Solid Matrices Using Equilibrium ... American Society for Testing and Materials (2003) Standard Guide for Sampling Waste and Soils for Volatile Organic Compounds, ASTM Guide D 4547-03 Grant, C.L., T.F Jenkins, and A.R Mudambi (1996) ... Aqueous and Solid Samples for Volatile Organic Compound (VOC) Analysis,” a useful reference for VOC sampling and analysis.) Soil was deleted as an option for Method 5030, “Purge -and- Trap for Aqueous...

Ngày tải lên: 14/03/2014, 20:20

... PST as a knowledge source for DA detection, we essentially need to model the relationship between the random DA and the random DR Denote the random DA by X and the random DR by Y Given a text ... (Larsen and Marx, 2000) of each word w in the ASR output Figure illustrates the PST for the sentences: Where is the Anping-Fort There are two keywords Where and Anping-Fort and two non-keywords is and ... sentence symbol, and D is a function defined on P for rule probability (Jurafsky and Martin, 2009) A derivation rule is defined to be a derivation of the form A → B → w where A, B ∈ V and w ∈ Σ The...

Ngày tải lên: 20/02/2014, 05:20

... Quellgruppe Landwirtschaft Braunschweig : FAL, 279 p, Landbauforsch Völkenrode SH 260 Filipy J, Rumburg B, Mount G, Westberg H, Lamb B (2006) Identification and quantification of volatile organic compounds ... and non-odorous volatile organic compounds near a commercial dairy in California Atmos Environ 37(7):933-940 Schade GW, Crutzen PJ (1995) Emissions of aliphatic amines from animal husbandry and ... identified and measured the mixing ratios of major volatile organic compounds emitted by pigs and sheep in Germany The diurnal variations of carbon dioxide, nitrous oxide, methane, and ammonia...

Ngày tải lên: 05/03/2014, 21:20

... on volatile organic compound concentrations in a call center Atmospheric Environment 37: 5517-5527 Hodgson AT, Rudd AF, Beal D and Chandra S 2000 Volatile organic compound concentrations and ... of volatile organic compounds in vinyl flooring Journal Air & Waste Management Association 51: 174-185 Hodgson AT 1999 Common Indoor Sources of Volatile Organic Compounds: Emission Rates and ... direct and immediate effects The influence of indoor temperature and relative humidity on the emissions and concentrations of formaldehyde has been studied and modeled in chamber experiments and...

Ngày tải lên: 22/03/2014, 14:20

... 0.2 and 0.3 μL for IFNγ and CD8, respectively Positive control cDNA (IFNγ and CD8 plasmid, Invitrogen) were run in duplicate at various concentrations to generate standard curves for IFNγ and ... at 10 and did not show detection in all 12 tests, therefore SD, % Recovery, and %CV is not analyzed) IFNγ plasmid at different copy numbers were used for assessment of LOQ and LOD Expected and ... Zane and Judi Baker from Beckman Coulter Immunomics for providing the control and MART-1 specific Jurkat T cells and their effort to manufacture a single batch of tetramers (gp100 and MART-1) for...

Ngày tải lên: 18/06/2014, 15:20

... Figure Standardized diffuse reflectance spectra for different hard and soft tissues (Transformation of the entire data set using a mean of zero and a standard deviation of 1) 0.837 Salivary Gland ... FS, AD, EN and MS performed the data analysis and assessment FS and MS conceived of the study, participated in design and coordination and drafted the manuscript All authors read and approved ... [20] We then used 47 parts for calculating the PCA and training the LDA and the remaining part for testing This was repeated for all 48 parts so that the predictions for all observations in the...

Ngày tải lên: 18/06/2014, 19:20

... [17-19] RIfS sensing using AAO was demonstrated for sensitive organic and biomolecular detection in aqueous solution, but the application for detection of gas molecules has not yet been considered ... use of nanoporous anodic aluminium oxide [AAO] for reflective interferometric sensing of volatile sulphur compounds and hydrogen sulphide [H2S] gas Detection is based on changes of the interference ... based on a nanoporous AAO platform is simple, easy to miniaturise, inexpensive and has great potential for development of gas sensing devices for a range of medical and environmental applications...

Ngày tải lên: 18/06/2014, 22:20

... Figure Standardized diffuse reflectance spectra for different hard and soft tissues (Transformation of the entire data set using a mean of zero and a standard deviation of 1) 0.837 Salivary Gland ... FS, AD, EN and MS performed the data analysis and assessment FS and MS conceived of the study, participated in design and coordination and drafted the manuscript All authors read and approved ... [20] We then used 47 parts for calculating the PCA and training the LDA and the remaining part for testing This was repeated for all 48 parts so that the predictions for all observations in the...

Ngày tải lên: 20/06/2014, 03:20

... [17-19] RIfS sensing using AAO was demonstrated for sensitive organic and biomolecular detection in aqueous solution, but the application for detection of gas molecules has not yet been considered ... use of nanoporous anodic aluminium oxide [AAO] for reflective interferometric sensing of volatile sulphur compounds and hydrogen sulphide [H2S] gas Detection is based on changes of the interference ... based on a nanoporous AAO platform is simple, easy to miniaturise, inexpensive and has great potential for development of gas sensing devices for a range of medical and environmental applications...

Ngày tải lên: 20/06/2014, 04:20