nebraska apos s public water system emergency response plan

... threats in drinking water distribution systems • Case study applications • Distribution system modeling, SCADA systems, security hardware, and surveillance systems • Institutional and management issues ... threats These experts address the following issues: • • • • Problems in protecting water and wastewater systems The consequences of not protecting these systems The state of the art in protecting water ... computations and also the subsequent assessment of the vulnerability The methodology has been tested for five water supply systems (WSSs) and one urban drainage system (UDS) It was demonstrated that...

Ngày tải lên: 01/04/2014, 11:46

... the water pipe systems, it is possible to obtain the potential problems associated to possible sources of pollutants The statistics of performance of water pipe systems is normally expressed ... first failure and its possible repair [3] The presence of leaks is unavoidable and generates secondary economic losses (in addition to primary economic losses, i.e cost of raw water, besides its ... Volume 2, Issue 3, 2011, pp.391-400 susceptible Water pipe systems with more storage facilities were less susceptible to negative pressure And if the locations of tanks are at or near dead ends were...

Ngày tải lên: 05/09/2013, 14:58

... system studies are not adequate Such programs display poor convergence characteristics for radial systems The programs also assume a perfectly balanced system so that a singlephase equivalent system ... 6 Distribution Systems William H Kersting New Mexico State University 6.1 Power System Loads Raymond R Shoults and Larry D Swift 6.2 Distribution System Modeling and Analysis William H Kersting ... This classification includes residential, commercial, industrial, and other Residential customers are domestic users, whereas commercial and industrial customers are obviously business and industrial...

Ngày tải lên: 05/03/2014, 16:20

... use of system software Ability to analyze and evaluate an organization s system software controls and identify the strengths and weaknesses Skills to use software products to review system software ... success factors Devising key performance measures Performing evaluations Assessing auditee satisfaction Issuing progress reports Establishing or identifying benchmarks for the information system ... opportunities associated with providing consulting and assurance services to Internet-enabled businesses and the consumer public, as well as users of traditional systems Information security controls have...

Ngày tải lên: 05/03/2014, 21:20

... E-Commerce S. H Von Solms, M V Kisimov 15 Software-Based Receipt-Freeness in On-Line Elections Emmanouil Magkos, Vassilios Chrissikopoulos, Nikos Alexandris 33 ID-Based Structured Multisignature Schemes ... (2001, H(2002)} Assert Q P acts as P if proposition Q holds, otherwise it acts as End The set of propositions depends on the system used for analysis Since we use Isabelle (Paulson, 1994), a proof ... Keywords: Formal methods, security protocols, electronic commerce ADVANCES IN NETWORK AND DISTR SYSTEMS SECURITY Introduction Security protocols are used in distributed systems to protect the secrecy...

Ngày tải lên: 25/03/2014, 11:06

... concentrations are as follows: ISSAP (Information Systems Security Architecture Professional) ISSMP (Information Systems Security Management Professional) ISSEP (Information Systems Security Engineering ... Techniques Passwords Biometrics Tokens Tickets Single Sign On Access Control Techniques Discretionary Access Controls (DAC) Nondiscretionary Access Controls Mandatory Access Controls Role-Based Access ... mechanisms used to manage access to resources and systems and provide protection for those resources and systems Examples of logical or technical access controls include encryption, smart cards, passwords,...

Ngày tải lên: 25/03/2014, 11:09

... Physical Security Controls Site Selection Visibility Accessibility Natural Disasters Facility Design Work Areas Server Rooms Visitors Forms of Physical Access Controls Fences, Gates, Turnstiles, ... resources and systems and also provide protection for those resources and systems Examples of logical or technical access controls include encryption, smart cards, passwords, biometrics, constrained ... Tickets Single Sign-On Access Control Techniques Discretionary Access Controls Nondiscretionary Access Controls Mandatory Access Controls Role-Based Access Control Lattice-Based Access Controls Access...

Ngày tải lên: 25/03/2014, 11:10

... to secure it ease of use versus security The easiest system to use would allow access to any user and require no passwords; that is, there would be no security Requiring passwords makes the system ... NFS file system has been mounted it is treated like a local file system If an internal system exports a file system to external systems, then the file system is available to a hacker across the ... operating system, CPU, files and other resources is tightly controlled 1.3 File Systems 1.3.1 AFS — ANDREW FILE SYSTEM AFS is a networked file system with similar functionality to NFS This file system...

Ngày tải lên: 21/04/2014, 14:23

... bodies associated with these communities to fund studies or request proposals that address the presence, fate, and effects of PPCPs in aquatic systems The release of the first comprehensive reconnaissance ... fuel the interest in studies of PPCPs, it is clear that PPCP research has grown beyond surface -water studies to examine issues such as: • Presence in other matrices, such as groundwater,6–11 landfill ... compounds prescribed in any year illustrates the changes in prescription trends Some compounds, such as albuterol or furosemide, are consistently present, whereas new pharmaceuticals, such as various...

Ngày tải lên: 18/06/2014, 16:20

... analysis are usually achieved using solid-phase extraction (SPE) Sensitive detection methods such as gas chromatography-mass spectrometry (GC-MS), GC-tandem mass spectrometry (GC-MS/MS) or liquid ... and wastewaters using an SPE (Oasis HLB) method and LC-(+)ESI-MS/MS and LC-ESI-IT-MS This was presented as a “nonintrusive” © 2008 by Taylor & Francis Group, LLC Advances in the Analysis of Pharmaceuticals ... analytes in the unspiked samples These calibration curves compensated for both variations in the SPE recoveries and matrix effects that can either suppress or enhance signals with LC-ESI-MS/MS instrumentation...

Ngày tải lên: 18/06/2014, 16:20

... such as soil and sludge extracts MIPs have also been synthesized to remove estrogens and estrogenic compounds from environmental matrices such as natural waters.48,49 Estradiol was successfully ... interstitial spaces present in the sample Additionally, raising the temperature increases extraction kinetics such as desorption Elevated pressures also contribute somewhat to increasing solvent ... be used for extraction of analytes from solid samples Briefly, this technique uses a solid phase sorbent, usually octadecylsilyl silica packing material similar to those used in reversed phase...

Ngày tải lên: 18/06/2014, 16:20

... risk of selected Gd-containing contrast-enhancing agents for MRI First, the results are discussed for each test system; second, a risk assessment is performed based on these data The compounds ... aquatic ecosystem The European risk assessment guideline3 proposes a tiered system in which exposure estimation and risk screening are included, as well as the determination of physicochemical ... aquatic ecosystem (see Figure 4.1), is investigated Furthermore, in order to assess persistence and thus temporal development of exposure, tests on biodegradation are conducted Screening tests for...

Ngày tải lên: 18/06/2014, 16:20

... medicines from the soil surface to field drains, ditches, streams, rivers, and groundwater.33–41 A range of experimental designs and sampling methodologies has been used These investigations are described ... studies was obtained from a pig farm where tylosin was used as a prophylactic treatment, this substance was not detected in any drainflow samples—possibly because it is not persistent in slurry.15 ... from the dissipation behavior in soils.14 One possible explanation is that the mechanism of degradation in manure and slurry stores is anaerobic, whereas degradation in soils is most likely due...

Ngày tải lên: 18/06/2014, 16:20

... summarizes the structures, class assignments, molecular weights, acid dissociation constants (pKa), and usage information for the antibiotics discussed in this chapter For antibiotics possessing a positive ... antibiotic classes discussed thus far, sulfonamide antibiotics sorb to soils, clays, and organic materials to a lesser extent The low sorption of sulfonamides is expected because of their high ... mechanisms for natural estrogens in wastewater treatment systems Sarmah et al.10 compiled data on veterinary antibiotic use and sales trends for several countries, including the United States, the...

Ngày tải lên: 18/06/2014, 16:20

... obvious effect of tylosin It is possible those resistant organisms were present in the manure or that some organisms in the manure developed resistance to tylosin during the study The results of ... on a Zorbax SD-C18 4.6 × 250 mm column (Agilent Technologies, Santa Clara, California) Mass spectrometry was used for analysis of tylosin factors based on mass, as reference standards for each ... Pharmaceuticals in the Environment and in Water Treatment Systems USDA APHIS Cattle on Feed Evaluation http://www.aphis.usda.gov/vs/ceah/cei/antiresist antibiouse.pdf http://www.aphis.usda.gov/vs/ceah/cahm/Beef_Feedlot/Cofdes1.pdf...

Ngày tải lên: 18/06/2014, 16:20

... regions is usually transported via subterranean sewer systems to wastewater treatment plants It should be noted that less polar pharmaceuticals may adsorb to sewage sludge during wastewater treatment ... uptake of soil-applied pesticides is also huge because it is essential for designing and assessing the efficacy of crop protection agents However, studies on plant uptake of pharmaceuticals are limited ... mechanism vs translocation in the plant for nonpolar compounds.43 The class of xenobiotics whose uptake has been intensively studied is pesticides, especially herbicides that may affect nontarget plants.44,45...

Ngày tải lên: 18/06/2014, 16:20

... recognize and bind to GSH GSH plays a major role both in a plant s endogenous cellular processes as well as in the plant s defense responses GSH is ubiquitous and abundant with roles spanning © 2008 ... by plants Activation of GSH biosynthesis is based on the ability of proteins involved in photosynthesis to act as an intricate sensory system to respond to variations in redox potential caused ... CONJUGATION Plants have an intricate defense system that is capable of combating a variety of intrusions ranging from pathogens to exogenous chemicals In fact, the plant s defense system is controlled...

Ngày tải lên: 18/06/2014, 16:20

... also include disposal of unused medications to sewage systems, underground leakage from sewage system infrastructures, release of treated or untreated hospital wastes, disposal by pharmacies ... physicians, and humanitarian drug surplus to domestic sewage systems Transmission routes include release to private septic fields; treated effluent from domestic sewage treatment plants discharged ... photolysis products occurs Last, if photolysis byproduct formation occurs, their toxicity and treatability should also be addressed REFERENCES Daughton, C.G In Water: Science and Issues; Dasch,...

Ngày tải lên: 18/06/2014, 16:20

... using rapid small-scale column tests (RSSCTs) to predict GAC performance A detailed description of these tests was published previously.31 The RSSCT design used constant diffusivity similitude, ... discharge comprises a significant portion of the receiving stream s total flow In some cases, effluent-dominated surface waters are used as source waters for drinking water treatment facilities ... COMPOUNDS Target compounds were selected from various classifications of organic contaminants Classes included pharmaceuticals, hormones, personal-care products, suspected endocrine disruptors, and...

Ngày tải lên: 18/06/2014, 16:20