use of species sensitivity distributions in the derivation of water quality criteria for aquatic
Species Sensitivity Distributions in Ecotoxicology - Section 1 ppsx
... valid in the case of HCS, but not in the case of HC5 In his derivation Kooijman (1987) at a certain point neglects the in uence of sampling error in the mean and continues by taking only sampling ... al., 1996) They adapted SSDs from their use by the U.S EPA in calculating national ambient water quality criteria They argued that the use of SSDs in criterion-setting made their use in ecological ... Warren-Hicks) originated independently; both were based on the use of SSDs for standard setting in the United States and Europe However, each was aware of the other’s interest in the use of SSDs, and,...
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Species Sensitivity Distributions in Ecotoxicology - Section 2 pdf
... to 0.767 The strong increase in the case of Pb is due to the nonlinear effect of pH on Pb bioavailability and the fact that the SSD for Pb is narrower than the one for Cd Interestingly, the present ... With FAγ, the γth percentile of the posterior PDF of the FA, and HCp γ the (1 – γ)th percentile of the hazardous concentration for p% of the species, the Bayesian version of the law of extrapolation ... medians of order statistics for the uniform distribution Medians for other distributions are found by applying the inverse CDF for that distribution Median plotting positions for the uniform distribution...
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Species Sensitivity Distributions in Ecotoxicology - Section 3 ppt
... for use in the derivation of water quality criteria for the protection of aquatic life In the first procedure, the average of the logarithmic variances for a variety of pollutants was used with the ... extrapolation, in addition to decreasing concerns regarding bias 11.5 RELATED DEVELOPMENTS The use by the U.S EPA of SSDs in the derivation of water quality criteria for aquatic life aided in the development ... of these sets was selected for use as SAFs (U.S EPA, 1995b) The use by the U.S EPA of SSDs in the derivation of aquatic life criteria also aided in the development of the equilibrium-partitioning...
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Species Sensitivity Distributions in Ecotoxicology - Section 4 (end) doc
... of uncertainty are included in the calculation 21.2.3 CENSORING AND TRUNCATION Because of the symmetry of most of the distribution functions used in SSDs, asymmetries in the data can affect the ... managers or other interested parties When SSDs are used as models of the PES for an individual species, the sensitivity of the species is treated as a random variable The species that is the assessment ... Practices in the Derivation and Use of Species Sensitivity Distributions Glenn W Suter II, Theo P Traas, and Leo Posthuma CONTENTS 21.1 The Uses of SSDs 21.1.1 SSDs for Derivation of Environmental Quality...
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Tài liệu Water Pollution Control - A Guide to the Use of Water Quality Management Principles ppt
... joint studies and definitions of criteria for water use among riparian countries of the river A set of national water quality criteria for drinking -water use as well as criteria for fish and aquatic ... reptilian species The absence or presence of Atlantic salmon is used as an indicator of the functional integrity of the Rhine riverine ecosystem and of the quality of its water Other indicator species ... about the effects of water pollutants on a specific water use (see Box 2.1) They also describe water quality requirements for protecting and maintaining an individual use Water quality criteria...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles ppt
... Treatment in the Netherlands (RIZA), the International Institute for Infrastructural, Hydraulic and Environmental Engineering of the Netherlands (IHE), the World Bank, the WHO Collaborating Centre for ... particularly the Ministry of Foreign Affairs/DGIS of the Netherlands Financial support for the activities undertaken by the Working Group has been provided by UNEP and by the Government of the Netherlands ... building 8.7 Conclusions 8.8 References Chapter - Information Systems 9.1 Introduction 9.2 The importance of integration 9.3 Specifying information needs 9.4 Information gathering and dissemination...
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Water Pollution Control: A guide to the use of water quality management principles docx
... joint studies and definitions of criteria for water use among riparian countries of the river A set of national water quality criteria for drinking -water use as well as criteria for fish and aquatic ... reptilian species The absence or presence of Atlantic salmon is used as an indicator of the functional integrity of the Rhine riverine ecosystem and of the quality of its water Other indicator species ... about the effects of water pollutants on a specific water use (see Box 2.1) They also describe water quality requirements for protecting and maintaining an individual use Water quality criteria...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles doc
... be converted into a water- soluble form and then into a reduced form having an affinity for the fibre to be dyed The traditional method of converting the original dye to the affinity form is treatment ... function of the intended use of the receiving waters Variable Discharge in surface water Discharge in water sensitive to eutrophication Effluent use in irrigation and aquaculture High quality Low quality ... wastewater flow 85-200 na Not applicable Within the household, tap water is used for a variety of purposes, such as washing, bathing, cooking and the transport/flushing of wastes Wastewater from the...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles 6 pot
... 1994) Mathematical models are, therefore, useful tools for water quality management because they enable: • The forecasting of impacts of the development of water bodies • The linking of data ... level (information use) is made up of the decision-making authorities who are the end-users of the information produced At this level, information is used for checking and correcting the policies ... report for the state of Danish rivers is given in Figure 9.8 9.4.4 Use and dissemination of information Use of information is the third and highest level of the information system At this level the...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles 7 ppt
... to the expansion of the city over many years, the water quality of the present water supply intake points does not, and probably will never, meet the water quality standards for the drinking water ... suitable for locating the new intake point (Figure II.5) The project was then divided into two phases: the relocation of the water intake to Linjiang and the location of the Bridge as the ultimate water ... communication engineering Figure II.5 Map showing the route of the new water conveyer between the City and the new water intake point at Bridge The completion of the first phase of the new water intake...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles 9 docx
... applicable for enforcing the improving and maintaining of the drinking water supply to the required quality are as follows: • Existing laws of the Russian Federation, namely "On Protection of the Natural ... Federation state report "Drinking Water" issued in 1994, highlighted among other things the ongoing deterioration in water quality and in the reliability of the Moscow region drinking water supply (State ... the aim of improving the reliability of the Moscow City drinking water supply, the feasibility of using groundwater is being studied, based on the following groundwater withdrawal sites: northern...
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Water Pollution Control - A Guide to the Use of Water Quality Management Principles 10 pdf
... following the implementation of the Immediate Action Plan in the basins of the Moscow Region used for drinking water supplies X.8 International co-operation A co-operative programme Improved Drinking ... is inevitable Figure XIII.2 Map showing the major features of the Sana'a basin XIII.2.2 Water use Groundwater in the region is used exclusively to satisfy the water needs of the different water- using ... continuous monitoring of the investigated area, as well as the NWSA wellfields AlHamdi (1994) investigated the quality of groundwater in the city of Sana'a and classified the city into three quality...
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Báo cáo Y học: Identification of residues in the PXR ligand binding domain critical for species specific and constitutive activation docx
... and the estrogen receptor [31,32] In the case of RXR a mutation of Phe318 into an alanine in helix causes a destabilization in a network of hydrophobic interactions in the apo-receptor core In the ... ligand binding domain [19] was used as template for modeling human PXR (PDB entry 1DB1) Modeling was performed with the program O [20] The conserved residues in VDR and PXR were kept intact in the ... temperature of 155 °C for 45 For the amino-acid analysis an AminoQuant II/M High Sensitivity Instrument (Hewlett Packard, Waldbronn, Germany) was used The AminoQuant amino-acid analyzer combines the...
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Báo cáo lâm nghiệp:"Water relations and hydraulic characteristics of three woody species co-occurring in the same habitat" pptx
... could be explained in terms of their complementary changes in Rroot through the year that allowed the peaks of their water demand to be reached in different periods of the year Therefore, a second ... (Ypd – Ymin) in equation would represent the water potential difference driving the flow from the soil to the leaf (at midday) In turn, (Ypd – Yx) in equation would be the driving force for the flow ... for estimating the residual turgor of leaves Water relations of co-occurring woody plants 299 when reaching the minimum diurnal YL [13] So as to quantify the overall diurnal drop in YL, the integral...
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Barriers to research utilization and research use among registered nurses working in the care of older people: Does the BARRIERS Scale discriminate between research users and non-research users on perceptions of barriers? potx
... conducted in North America and United Kingdom (UK) This instrument is linked to the Diffusion of Innovations theory [8] The items in the instrument cover four domains of barriers: the nurse, the setting, ... professionals in healthcare face diverse types of barriers that hamper them in changing clinical practice Therefore, the main purpose of this study was to examine the validity of the BARRIERS scale in relation ... four of the items, the mean value on the RU index will be 3.6 However, the data from six respondents could not be used because missing data for >50% of the items within the RU index Thus, the...
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báo cáo khoa học: " Barriers to research utilization and research use among registered nurses working in the care of older people: Does the BARRIERS Scale discriminate between research users and non-research users on perceptions of barriers?" pptx
... conducted in North America and United Kingdom (UK) This instrument is linked to the Diffusion of Innovations theory [8] The items in the instrument cover four domains of barriers: the nurse, the setting, ... professionals in healthcare face diverse types of barriers that hamper them in changing clinical practice Therefore, the main purpose of this study was to examine the validity of the BARRIERS scale in relation ... four of the items, the mean value on the RU index will be 3.6 However, the data from six respondents could not be used because missing data for >50% of the items within the RU index Thus, the...
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Báo cáo y học: "The use of proton pump inhibitors for gastric acid suppression in critical illnes" pdf
... protecting the gastric mucosa or increasing the intragastric pH The principal means of directly protecting the gastric mucosa is the use of sucralfate Although the potential protective effect of ... and avoiding the consequent extension of ICU stay In addition, both the option of continuous infusion of IV formulations and the lack of any need for pH monitoring with the PPIs have the potential ... have investigated the use of a proton pump inhibitor (PPI) in the prophylaxis of stress ulcer in critically ill patients In the absence of robust data allowing a systematic review, the points...
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Quantifying species abundance trends in the northern gulf of california using local ecological knowledge
... composite trends detailing the likely changes in relative abundance for 42 species groups in the northern Gulf of California The intention is that these time series for fish, invertebrates, mammals, ... A.1 in the appendix) for each decade and used as input in the fuzzy logic procedure In addition to the abundance trends, simple indicators were collected in the form of yes/no questions The questions ... Table A.2) In the o absence of species distribution data, the MSY for the northern Gulf of California was assumed to be equal to the MSY values for Sonora and Baja California combined In some cases,...
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