biosensors for the detection of e coli o157 h7 1998 2010
handbook of water and wastewater systems protection
... Agency Response Network is to identify the need to help each other in an emergency The Water Agency Response Network links the Emergency Operations Centers of the member agencies with one another ... characterization of the array of events of the offset values between online sensor first detection time under uncertainty and the one corresponding to the same intrusion event stored in the off-line ... pile of rubble Some of the existing facilities that proved to be effective during the earthquake included emergency shut-off valves, a remote telemetry/telecontrol system, and earthquake-resistant...
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Intrusion problematic during water supply systems’ operation
... The difference between the two levels is quantified as the maximum and minimum pressure values during the transient event Based on the water level difference and the area of the intrusion pipe, ... one hand, by the non elastic behavior of the pipes, and on the other hand, by the friction effect The objective of the proposed technique is to allow the characterization of the energy dissipation, ... Graphically the MOC dissipative model obtains the representation of the transient in the tested scenario that was simulated experimentally (Figure 3) The numerical model generates a pressure transient,...
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Distribution Systems ppt
... of the source side Thevenin equivalent circuit will be the same regardless of the type of connection of the feeder transformer The three-phase Thevenin equivalent circuit referenced to the load ... positive sequence impedance z22 = the negative sequence impedance In the idealized state, the off diagonal terms of Eq (6.33) would be zero When the off diagonal terms of the phase impedance matrix ... condensed notation will be used throughout the document Sequence Impedances Many times the analysis of a feeder will use the positive and zero sequence impedances for the line segments There are...
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Management Planning Guide for Information Systems Security Auditing pot
... necessary training and experience to implement the software and evaluate the results • Auditors will have the knowledge needed to evaluate whether the procedures performed will help meet their ... recommendations Performance measures should be established to determine whether the auditees have agreed with the findings of the auditors for a specified percentage of the audit findings and whether they ... controls The reason for the requirement is to ensure that the auditor documents whether the decision was made as a matter of audit efficiency or because there were perceived weaknesses in computer...
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advances in network & distributed systems security
... get the time-lock puzzle of the vote, as it is being delivered to the authority Even with the help of the voter, there is no way to reverse the time-lock process: the voter does not know the trapdoor ... exchange The environments can also be used to describe security properties concisely In the previous example, the agreement between the participants about the key can be expressed as coincidence between ... The identifiers are referred to in subsequent messages The cardholder then sends the purchase request message PReq to the merchant This message includes the amount of money that the cardholder...
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cissp - certified information systems security professional study guide, 3rd ed.
... Answers to Assessment Test Answers to Assessment Test C The Managed phase of the SW-CMM involves the use of quantitative development metrics The Software Engineering Institute (SEI) defines the ... subset answer selections In other cases, none of the answers will seem correct In these instances, you’ll need to select the least incorrect answer By the way, the correct answer for this question ... Unique terminology is presented in the chapter, and then each key term is also later defined in the glossary at the end of the book for your convenience Review questions test your knowledge retention...
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cissp - certified information systems security professional study guide, 4th ed.
... 13 C The Managed phase of the SW-CMM involves the use of quantitative development metrics The Software Engineering Institute (SEI) defines the key process areas for this level as Quantitative Process ... discussed within the chapter The practice questions at the end of each chapter and the practice exams on the CD are designed to test your retention of the material you’ve read to make you are aware ... the body of knowledge area and the test specs for the CISSP exam Chapter Review Questions Each chapter includes practice questions that have been designed to measure your knowledge of key ideas...
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information resource guide computer internet and network systems security
... services the risk outweighs the benefit of the service and the administrator may choose to eliminate the service rather than try to secure it ease of use versus security The easiest system to use ... incorporate the concept of least privilege [ROBA91] defines least privilege as "a principle where each subject in a system be granted the most restrictive set or privileges needed for the performance of ... are encrypted to see if they match the stored encryption) It is therefore necessary to ensure that these servers are not accessible by hosts which not plan to use them for the service, and even...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 1 pot
... growing field of research The use of “emerging” is not intended to infer that the presence of these compounds in the environment is new These chemicals have been released into the environment as ... the presence of these chemicals in the environment, the analytical capabilities required for detection, and the subtle effects that very small concentrations of these chemicals appear to have ... expected Studies are necessary to assess the concentration and composition of PPCPs present in the aquatic environments of these regions to determine the potential for the environmental effect of...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 2 docx
... choice because this lower temperature resulted in a better peak shape symmetry To determine the matrix effects, the authors checked the performance of the internal standard simatone in the ESI ... reasonable recoveries for the selected drugs in different matrices were achieved This work20 investigated the losses in the recoveries of some drugs due to matrix impurities, which either reduced the sorption ... studied the effect of sample preservatives on the recovery of the pharmaceuticals.21 They compared formaldehyde and sulfuric acid, obtaining the best results for the latter, which prevented the degradation...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 3 pdf
... cleanup, one is able to remove many matrix interferences; however, the more extensive these procedures are, the greater the possibility becomes for analyte loss Additionally, because the levels ... interaction sites within a polymeric solid The selectivity of the sites depends on the interactions between the template and the monomer used to develop the imprint (see Figure 3.3) A comprehensive ... However, the spiking levels used in these studies are orders of magnitude above environmentally relevant concentrations, and therefore these methods may not be applicable to real environmental...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 4 potx
... guideline of the OECD 202 and the EC guideline part C.2.23,24 Different guidelines were used for these tests because they were performed for the use in different regulatory regions The test was ... the one hand, and the experimental determination of a no-effect concentration (NOEC) of the pharmaceutical on the other hand.3,4 Because the aquatic environment represents the primary recipient ... during the whole exposure period Nevertheless, it can be stated that in none of the tests acute toxic effects were observed up to the maximum tested concentrations, with the exception of high concentrations...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 5 pot
... evaluate the performance of the exposure models described previously Generally, these exposure models will overpredict concentrations of a veterinary medicine in the environment (Figure 5.4) ... environmental risk assessment process for veterinary medicines, a number of approaches have therefore been developed for predicting concentrations of veterinary medicines in soil and the potential ... prioritize these and begin to develop an understanding of the fate (and effects) of some of the more important classes in the environment A large body of data is now available on the effects of the...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 6 pptx
... difference and neither the conservation of mass nor the absence of metabolites were confirmed Transformations of steroid hormones under apparently sterile conditions have been reported elsewhere78 ... displacement techniques have been used The interpretation and application of data from these experiments requires careful consideration of the experimental design employed In batch equilibrium experiments, ... assessments of their environmental fate Several reviews of this information have been published in the past years, especially for veterinary pharmaceuticals Most recently, Lee et al.8 summarized...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 7 pot
... from any of the manure treatments; therefore, the E coli were averaged over these treatments for each leaching period (Figure 7.2) E coli (from manure) were detected in all leachates, but the maximum ... 0157 :H7 B6914 were added to the slurry These organisms were selected for the preliminary trial because of their ease of detection, relevance, and availability The slurry was then poured onto the ... cells/mL (the limit of detection for the assay) Although
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 8 potx
... were some concerns as to whether the urine components in the leachate would interfere and affect the accuracy of the ELISA measurements Therefore an experiment was carried out on recoveries of ... at the University of Bonn Table 8.2 summarizes the performance data of the ELISAs Selectivity in the context of the model experiments performed means that the cross-reactivity of the antibodies ... recovery experiments it was concluded that soil moisture could be decisive, and therefore the four soils were studied at three different moisture levels The experiments were performed in microcosms,...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 9 docx
... an electrophilic atom in the xenobiotic The first documented cases of plant GST-mediated detoxification were in the metabolism of herbicides There are a few cellular mechanisms that render a herbicide ... chlorinated pesticides are transformed using these latter Phase II enzymes.25 However, unlike GST, these enzymes appear to conjugate at the carboxylic acid and amine R-groups of the pesticide, instead ... plants, the GSH-conjugated xenobiotic is either stored in the cell’s vacuole or else it is sent to the apoplast (area outside of the cell).26 Some evidence does exist, which suggests that GSH-labeled...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 10 docx
... variable, and during other sampling events conducted at the same plant lower removal efficiencies were observed These results make clear the need to investigate further the fate and potential remediation ... to become more persistent and, therefore, even if the half-lives of these compounds are short, long-term exposure effects and combinatory effects need to be addressed The ecotoxicological potential ... not used in many of these studies, they are employed when samples are collected for disinfection byproduct analysis, but only after they have been evaluated to determine if they not affect the stability...
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Fate of Pharmaceuticals in the Environment and in Water Treatment Systems - Chapter 11 docx
... geographically diverse locations across the United States Treatment plants were selected based upon known wastewater influence in the source water Therefore, these utilities have the highest potential to ... removals were observed for progesterone and estrone during pilot-scale experiments However, the general trend in which the compounds were removed was similar to the bench-scale testing results TABLE ... ibuprofen (Figure 11.11) Conversely the addition of hydrogen peroxide increased the removal of androstenedione, progesterone, testosterone, caffeine, and pentoxifylline At an increased ozone dose...
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