baseline ecological risk assessment for aquatic wetland and terrestrial habitats along the clark fork river montana
Ecological Risk Assessment for Contaminated Sites - Chapter 2 docx
Ngày tải lên :
11/08/2014, 04:20
... contaminated and would constitute logical units for assessment Examples include the East Fork Poplar Creek in Oak Ridge, where flooding contaminated the floodplain with mercury, and the Clark Fork River ... Reservation), the current state represents the maximum baseline risk, and ecological risks will decline in the future and need not be assessed However, separate ecological risk assessments should be performed ... procedure for risk assessments performed for the Oak Ridge Reservation is contained in Risk Assessment Program (1997) 2.7.3 REFERENCE SITES AND REFERENCE INFORMATION When performing a risk assessment, ...
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Ecological Risk Assessment for Contaminated Sites - Chapter 3 potx
Ngày tải lên :
11/08/2014, 04:20
... biota for two reasons First, the form in the exposure assessment should match the form in the effects assessment Exposure–response models for aquatic biota are usually based on toxicity tests performed ... over the foraging range of the species, expressed as the mean and standard deviation In all cases, the analysis of exposure must appropriately define the intensity, the temporal dimension, and the ... sampling and data reduction must be based on the variability of concentrations in the stream and the toxicokinetics and toxicodynamics of the chemicals and receptors Human health risk assessments...
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Ecological Risk Assessment for Contaminated Sites - Chapter 4 potx
Ngày tải lên :
11/08/2014, 04:20
... Siluriformes Anguiliformes Anguiliformes Anguiliformes Anguiliformes Atheriniformes Atheriniformes Atheriniformes Atheriniformes Gasterosteiformes Gasterosteiformes Perciformes Mean Weighted ... Variable Perciformes Tetraodontiformes Perciformes Gasterosteiformes Atheriniformes Cypriniformes Tetraodontiformes Perciformes Gasterosteiformes Tetraodontiformes Perciformes Tetraodontiformes n ... data for the Tier II values, and the procedure and factors used to calculate the SAVs and SCVs are presented by EPA (1993c) and Suter and Tsao (1996) The ORNL methods differ from those in the...
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Ecological Risk Assessment for Contaminated Sites - Chapter 6 ppt
Ngày tải lên :
11/08/2014, 04:20
... Depending on the nature of the site and the goals of the assessment, exposure simulations are performed for each discrete area at the site of interest at which COPECs were identified or for the range ... determined, for each assessment endpoint, which risks exceed the threshold for significance and estimated the magnitude and probability of effects associated with the significant risks Those assessment ... distributions for the dose to river otter of mercury within two subreaches of the Clinch River/ Poplar Creek system The LOAEL for mercury to otters crosses the exposure distributions for Subreaches 3.01 and...
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Ecological Risk Assessment for Contaminated Sites - Chapter 7 doc
Ngày tải lên :
11/08/2014, 04:20
... acceptable to the risk managers and the public For other examples of combinations, it is advisable for decision makers to balance health and ecological risks with cost and other considerations For example, ... For example, if the health risk is de minimis, but the baseline ecological risks due to contaminants are de manifestis and the remedial ecological risks are de manifestis, then the risk managers ... humans The probability of cancer is the endpoint for a carcinogen, and the threshold for effects is the endpoint for a noncarcinogen In contrast, ecological risk assessments are concerned with the...
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Ecological Risk Assessment for Contaminated Sites - Chapter 8 doc
Ngày tải lên :
11/08/2014, 04:20
... 8.1.5 LAND USE Land-use scenarios play a different role in ecological risk assessments than they in human health risk assessments For human health risk assessments, remediation depends on the land-use ... residential/parkland Although the same receptors are generally examined in the derivation of the PRGs, the level of protection for commercial and industrial land uses is lower than for the other two ... exposure and risk Even for migratory species, the question arises: Will the site provide habitat for the species during the time it might spend on the site? Therefore, for an industrial site,...
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Ecological Risk Assessment for Contaminated Sites - Chapter 10 pot
Ngày tải lên :
11/08/2014, 04:20
... intensive, and expensive 10.2.3 ASSESSMENT PHASE The assessment phase is equivalent to the analyses of exposure and effects and the risk characterization in a conventional ecological risk assessment ... Oceanic and Atmospheric Administration (NOAA), but any landholding agency is also a trustee for the resources on their lands The compensation may be for either the costs of restoring the injured ... services The situation is further complicated by the facts that (1) federal agencies cannot sue each other for damages; and (2) the federal facility agreements that bind the EPA, the states, and the...
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Ecological Risk Assessment for Contaminated Sites - Appendix (end) pdf
Ngày tải lên :
11/08/2014, 04:20
... lower in the former case and higher in the latter case than those in depurated worms Chemicals in the soil in the gastrointestinal tract bias the body burden estimates for the worms and the dose ... exposure for the scenarios described in the conceptual model exposure–response profile: The product of the characterization of ecological effects in the analysis phase of ecological risk assessment The ... summarizes the data on the effects of a contaminant, the relationship of the measures of effect to the assessment endpoint, and the relationship of the estimates of effects on the assessment...
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computational toxicology - risk assessment for pharmaceutical and environmental chemicals - s. ekins (wiley, 2007)
Ngày tải lên :
12/05/2014, 17:29
... pharmaceutical and environmental research Now is the time for an assessment of the convergence of toxicology and computational methods in these areas and to outline where they will go in the future ... ASSESSMENT: ENVIRONMENTAL The Toxicity and Risk of Chemical Mixtures 599 601 John C Lipscomb, Jason C Lambert, and Moiz Mumtaz 22 Environmental and Ecological Toxicology: Computational Risk Assessment ... ineffectual, by the stand it has been at these two or three thousand years; and that since of late mathematicians have set themselves to the study of it, men already begin to talk intelligibly and comprehensibly,...
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landslide hazard and risk assessment for road network using rs and gis a case study of xin man district, vietnam
Ngày tải lên :
03/10/2014, 13:14
... 23030’N and 1040 20’E to 105 34’E Xin Man and Hoang Su Phi districts lie in the high land and accounting for 18.3% of the total province’s area and 17.2% of the population The potential for the area ... taken in the year of 1987 and 2000, which are use for the extraction of land surface temperature and landuse information 1:25000 scale standard topographic map has been digitized and the obtained ... on the satellite system to located the extract position on the earth for making landslide map The Remote sensing technology has been used to get the present and accurate landcover information The...
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Human health and ecological risk assessment and risk management
Ngày tải lên :
15/04/2015, 09:20
... to the assessment of risk of chemicals to human health and well-being and the environment, and present the newest concepts in the evaluation of risks Format: Lectures including case studies, and ... LECTURES: Give the theoretical background for risk assessment General human and eco-toxicology Tools used in risk assessments Animal studies Human studies Exposure assessment Mode of Action Standard ... den Berg, Professor Institute of Risk Asssessment Sciences, University of Utrecht, The Netherlands Mary E Meek, McLaughlin Center for population Health Risk Assessment, Ottowa, Canada Kerstin...
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Gait speed and risk assessment for falls among men aged 80 years and older a prospective cohort study in taiwan
Ngày tải lên :
25/08/2016, 21:40
... evaluating the gait/balance disturbance was the second step in the risk assessment, and a number of tests were recommended, such as Get up and Go test, Timed Up and Go test, the Berg Balance Scale, and ... of fall is the strongest predictor for subsequent falls [7–9], as well as the risk for fractures among people aged 45 years and over [10] In the AGS-BGS guideline, after screening the history ... On the contrary, subjects with their gait speed ! m/s were not at a higher risk of falls even if they had a previous history of falls These findings strengthened the AGS-BGS guidelines in the...
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Radiological risk assessment for Al-Twuaitha nuclear site in Iraq
Ngày tải lên :
05/09/2013, 16:10
... parameters Conclusion The risk assessment and sensitivity analysis charts shows significant risk for the selected hotspots zones The total risk is dominated by effect of the hotspot near the IRT 5000 ... confidence interval The risk assessment and sensitivity analysis for hotspot 1, 2, 3, and total risk are calculated for beta function at the mean of 1.34, 488, 20.1, 0.123 and 469 mSv/y respectively ... individual risk factors to the variance of the target forecast Thus, the question of what are the most important risk factors can be answered depends decisively upon the risk measure employed The present...
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SEMI-MARKOV RISK MODELS FOR FINANCE, INSURANCE AND RELIABILITY doc
Ngày tải lên :
18/03/2014, 00:20
... Models for Risk Theory and Ruin Probability 2.1 The Simple Diffusion Risk Model 2.2 The ALM-Like Risk Model (Janssen (1991), (1993)) 2.3 Comparison of ALM-Like and Cramer-Lundberg Risk Models 2.4 The ... on the main interest of the reader For example, if the reader is interested in the new approaches for finance models, he can read the first four chapters and then immediately Chapters and 6, and ... at least one of these events occurs and the second iff all the events of the given sequence occur The set Ω is called the certain event and the set ∅ the empty event Two events A and B are said...
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Báo cáo khoa học: "Efficient Minimum Error Rate Training and Minimum Bayes-Risk Decoding for Translation Hypergraphs and Lattices" pptx
Ngày tải lên :
23/03/2014, 16:21
... as a line with γ as the independent variable For any particular choice of γ, the decoder seeks that translation which yields the largest score and therefore corresponds to the topmost line segment ... under an approximate BLEU score They approximated log(BLEU) score by a linear function of n-gram matches and candidate length If E and E are the reference and the candidate translations respectively, ... E) = otherwise In other words, for each path E, we count the edge that contributes n-gram w and has the highest edge posterior probability relative to its predecessors on the path E; there is...
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Báo cáo khoa học: " Risk factors for retained placenta and the effect of retained placenta on the occurrence of postpartum diseases and subsequent reproductive performance in dairy cows" potx
Ngày tải lên :
07/08/2014, 18:21
... during the warm season for the first lactation and during the cold season for the second lactation Cow parity and calving season were eliminated from the final model since they did not influence the ... depression, and odor of acetone on the breath Endometritis was diagnosed weeks postpartum by examination by the authors and diagnosed by the presence of the following clinical signs: cloudy discharge and ... tall fescue, oat hay, and additives They were milked twice daily and were observed for estrus behavior twice a day to calcium therapy Ketosis was defined as the presence of the following clinical...
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Regional Scale Ecological Risk Assessment - Chapter 2 potx
Ngày tải lên :
11/08/2014, 20:21
... traditional risk assessment to regional relative risk assessment FRAMEWORK OF THE RELATIVE RISK MODEL The framework for the RRM for regional risk assessment was outlined by Landis and Wiegers (1997) Ecological ... Uncertainties and to Confirm the Risk Rankings The combination of Steps and produces risk hypotheses that constitute patterns in the landscape and risks to the endpoints These hypotheses can be tested if there ... the future management of the area Third, there are also interactions between the three groups and the risk assessment team The role of the risk assessment team is critical In some instances the...
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Regional Scale Ecological Risk Assessment - Chapter 3 pdf
Ngày tải lên :
11/08/2014, 20:21
... SCALE ECOLOGICAL RISK ASSESSMENT INTRODUCTION This chapter explores the important link between the regional (ecological) risk assessment (RRA) process and the decisions these assessments inform ... (and ecological risk assessments [EcoRAs]) are scoped and conducted; (2) the decision-making processes that utilize RRAs and EcoRAs; (3) integration of risk assessment and risk management; and ... integration and iteration of the link between risk assessment and management decisions (USEPA 1997) Further supporting this linkage, EPA subsequently published the Ecological Risk Assessment and Risk...
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Regional Scale Ecological Risk Assessment - Chapter 4 ppsx
Ngày tải lên :
11/08/2014, 20:21
... only the direct stressors and the organisms affected by these stressors, but also the sources producing these stressors and the habitats on which the organisms depend A detailed analysis of the risk ... the project To address the varied concerns of the public and the RCAC, we found it necessary to modify the standard risk assessment approach Modifications resulted in the first application of the ... Information gathered during the problem formulation phase provided the foundation for constructing the conceptual model Initially, we focused on describing the standard components of a risk assessment: ...
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Regional Scale Ecological Risk Assessment - Chapter 5 doc
Ngày tải lên :
11/08/2014, 20:21
... Corvallis, the Willamette River drains approximately 4000 square miles including the watersheds of the Coast Fork Willamette River, the Middle Fork Willamette River, the Long Tom River, the McKenzie River, ... Eugene at the confluence with the Coast Fork Willamette River and Middle Fork Willamette River, 56 river miles (RM) down to Corvallis and the McKenzie River from RM 34 to its confluence with the Willamette ... boats and spread evenly along segments of the McKenzie River above Hayden Bridge and in the Middle Fork Willamette River and Coast Fork Willamette River Ranks were assigned assuming that the density...
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