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  • 1
    Keywords: Environmental toxicology. ; Electronic books.
    Description / Table of Contents: The fifth edition includes new sections on the use of adverse outcome pathways, how climate change changes how we think about toxicology, and a new chapter on contaminants of emerging concern. Additional information is provided on the derivation of exposure-response curves to describe toxicity and they are compared to the use of hypothesis testing.
    Type of Medium: Online Resource
    Pages: 1 online resource (491 pages)
    Edition: 5th ed.
    ISBN: 9781498750448
    DDC: 615.9/02
    Language: English
    Note: Cover -- Half Title -- Title Page -- Copyright Page -- Table of Contents -- Acknowledgments -- About the Authors -- Chapter 1: Introduction to Environmental Toxicology -- 1.1 Environmental Toxicology as an Interdisciplinary Science -- 1.2 A Brief History and Organizations in Environmental Toxicology -- 1.3 Interactions and Connections of Environmental Toxicology to the Management of Ecological Systems -- 1.3.1 Research Programs -- 1.3.2 Scientific Community -- 1.3.3 Risk Assessment -- 1.3.4 Governmental and Regulatory Agencies -- 1.3.5 Industry -- 1.3.6 General Public and Nongovernmental Organizations -- 1.4 Legislation -- 1.5 Introduction to this Textbook -- Study Questions -- Chapter 2: Frameworks and Paradigms for Environmental Toxicology -- 2.1 The Fundamentals -- 2.2 Models -- 2.3 Fundamental Models for Environmental Toxicology -- 2.3.1 The Classical Viewpoint for Classifying Toxicological Effects -- 2.3.2 Chemical Physical-Chemical Characteristics -- 2.3.3 Bioaccumulation/Biotransformation/Biodegradation -- 2.3.4 Receptor and the Mode of Action -- 2.3.5 Biochemical and Molecular Effects -- 2.3.6 Physiological and Behavioral Effects -- 2.3.7 Population Parameters -- 2.3.8 Community Effects -- 2.3.9 Ecosystem Effects -- 2.3.10 The Adverse Outcome Pathway -- 2.4 An Alter Native Framework Incorporating Complexity Theory -- 2.5 Spatial and Temporal Scales -- 2.6 Combining Scale and Ecological Dynamics: The Hierarchical Patch Dynamic Paradigm -- 2.7 Language as a Model -- 2.7.1 The Importance of Terminology and Language -- 2.7.2 The Language of Normative Science -- 2.7.3 Bending Science -- Study Questions -- References and Suggested Readings -- Chapter 3: Overview of Toxicity-Testing Methods -- 3.1 Introduction -- 3.1.1 Animal Care and Use Considerations -- 3.2 Standard Methods -- 3.2.1 Advantages of Standard Methods. , 3.2.2 Disadvantages of Standard Methods -- 3.3 Classification of Toxicity Tests -- 3.3.1 The Design of Toxicity Tests -- 3.3.1.1 Design Parameters for Single-Species Toxicity Tests -- 3.3.1.2 Exposure Scenarios -- 3.3.1.3 Test Organisms -- 3.3.1.4 Comparison of Test Species -- 3.4 Multispecies Toxicity Tests -- 3.4.1 The Design of Multispecies Toxicity Tests -- 3.4.2 The Nature of Multispecies Toxicity Tests -- 3.4.3 Summary of Design Guidelines for Multispecies Toxicity Tests -- 3.5 Overview of Specific Toxicity Tests -- 3.5.1 Daphnia 48 h Acute Toxicity Test -- 3.5.2 Algal 96 h Growth Toxicity Test -- 3.5.3 Acute Toxicity Tests with Aquatic Vertebrates and Macroinvertebrates -- 3.5.4 Terrestrial Vertebrate Toxicity Tests -- 3.5.5 Frog Embryo Teratogenesis Assay -- 3.6 Multispecies Toxicity Tests -- 3.6.1 Standardized Aquatic Microcosm -- 3.6.2 Mixed-Flask Culture -- 3.6.3 FIFRA Microcosm -- 3.6.4 Soil-Core Microcosm -- 3.7 Summary -- Study Questions -- Appendix: The Natural History and Utilization of Selected Test Species -- Aquatic Vertebrates -- Coho Salmon (Oncorhynchus kisutch) -- Rainbow Trout (Oncorhynchus mykiss) -- Brook Trout (Salvelinus fontinalis) -- Goldfish (Carassius auratus) -- Fathead Minnow (Pimephales promelas) -- Channel Catfish (Ictalurus punctatus) -- Bluegill (Lepomis macrochirus) -- Green Sunfish (Lepomis cyanellus) -- Invertebrates-Freshwater -- Daphnids (Daphnia magna, D. pulex, D. pulicaria, Ceriodaphnia dubia) -- Amphipods (Gammarus lacustris, G. fasciatus, G. pseudolimnaeus, Hyalella azteca) -- Crayfish (Orconectes sp., Combarus sp., Procambarus sp., Pacifastacus leniusculus) -- Stoneflies (Pteronarcys sp.) -- Mayflies (Baetis sp., Ephemerella sp., Hexagenia limbata, H. bilineata) -- Midges (Chironomus sp.) -- Snails (Physa integra, P. heterostropha, Amnicola limosa): (Mollusca, Gastropoda). , Planaria (Dugesia tigrina): (Platyhelminthes, Turbellaria) -- Invertebrates: Saltwater -- Copepods (Acartia clausi, A. tonsa) -- Algae -- Chlamydomonas reinhardi -- Ulothrix sp. -- Microcystis aeruginosa -- Anabaena flos-aquae -- Avian Species -- Mallard (Anas platyrhynchos) -- Northern Bobwhite (Colinus virginianus) -- Ring-Necked Pheasant (Phasianus colchicus) -- References -- Chapter 4: Analysis of Exposure-Response -- 4.1 Introduction -- 4.2 The Exposure-Response Curve -- 4.3 Thresholds and Hormesis -- 4.4 Terminologies from Hypothesis Testing -- 4.5 Overview of the Tools for the Analysis of Exposure-Response Relationships -- 4.5.1 Limitations and Alternatives to Hypothesis Testing -- 4.5.2 Comparison of Calculations of Several Programs for Calculating Probit Analysis -- 4.5.3 Modeling Using R and the DRC Package -- 4.5.4 Hypothesis Testing -- 4.6 Curve Fitting and Regression Modeling versus Hypothesis Testing -- 4.7 The Debate: Regression Model versus the Hypothesis-Testing Debate -- 4.8 Data Analysis and Interpretation of Multispecies Toxicity Tests -- 4.8.1 Univariate Methods -- 4.8.2 Multivariate Methods -- 4.8.3 Visualization -- 4.9 Summary of Design Guidelines for Multispecies Toxicity Tests -- Study Questions -- References and Suggested Readings -- Chapter 5: The Fate and Transport of Contaminants -- 5.1 Introduction to the Fate and Transport of Contaminants -- 5.2 Transport Mechanisms -- 5.2.1 Advection, Diffusion, and Dispersion -- 5.2.2 Long-Range Atmospheric Transport -- 5.3 Persistence -- 5.4 Biotransport -- 5.5 Abiotic Degradation/Transformation -- 5.6 Multimedia Box Models -- 5.7 Equilibrium -- 5.8 The Fugacity Approach -- 5.9 Bioconcentration versus Biomagnification -- 5.10 Bioavailability -- 5.10.1 Measures of Bioavailability -- 5.10.2 Metal Speciation and the Biotic Ligand Model. , 5.10.3 Acid Volatile Sulfide/Simultaneously Extracted Metals in Anoxic Sediment -- 5.11 Summary -- Study Questions -- References and Suggested Readings -- Chapter 6: Uptake and Modes of Action -- 6.1 Introduction -- 6.2 The Damage Process -- 6.2.1 Atmospheric Pollutants and Plants -- 6.2.2 Plant Injury -- 6.2.3 Vertebrates -- 6.2.3.1 Exposure -- 6.2.3.2 Uptake -- 6.2.3.3 Transport -- 6.2.3.4 Storage -- 6.2.3.5 Metabolism -- 6.2.3.6 Excretion -- 6.3 Mechanisms of Action -- 6.3.1 Disruption or Destruction of Cellular Structure -- 6.3.2 Direct Chemical Combination with a Cellular Constituent -- 6.3.3 Effect on Enzymes -- 6.3.4 Secondary Action as a Result of the Presence of a Pollutant -- 6.3.5 Metal Shift -- 6.4 Details of Specific Modes of Action -- 6.4.1 Narcosis -- 6.4.2 Organophosphates -- 6.4.3 Modes of Action of Chemical Warfare Agents -- 6.4.4 Monohaloacetic Acids -- 6.5 Receptor-Mediated Toxicity and Endocrine Disruption -- 6.5.1 Specificity of the Hormone-Receptor Interaction -- 6.5.2 The Receptor Pathway for TCDD -- 6.5.3 The Structure-Activity Relationships of PCB and Related Compounds -- 6.5.4 Polybrominated Diphenylethers -- 6.6 The Multiple Modes of Action of Atrazine -- 6.7 Adverse Outcome Pathway Models -- 6.8 Introduction to Quantitative Structure-Activity Relationships -- 6.8.1 Construction of Quantitative Structure-Activity Relationships Models -- 6.8.2 Typical Quantitative Structure-Activity Relationships Model Development -- 6.8.3 Estimation of Toxicity Using Quantitative Structure-Activity Relationships -- Study Questions -- References and Suggested Readings -- Chapter 7: Modification in Toxic Responses, Mixtures, and Climate Change -- 7.1 Introduction -- 7.2 Physicochemical Properties of Pollutants -- 7.3 Time and Mode of Exposure -- 7.4 Environmental Factors -- 7.4.1 Temperature -- 7.4.2 Humidity -- 7.4.3 Light Intensity. , 7.5 Biological Factors Affecting Toxicity -- 7.5.1 Diseases -- 7.5.2 Behavioral Factors -- 7.5.3 Sex Variation -- 7.5.4 Nutritional Factors -- 7.5.5 Fasting or Starvation -- 7.5.6 Proteins -- 7.5.7 Carbohydrates -- 7.5.8 Lipids -- 7.5.9 Vitamin A -- 7.5.10 Vitamin D -- 7.5.11 Vitamin E -- 7.5.12 Vitamin C -- 7.5.13 Minerals -- 7.6 Mixtures and the Effects on Toxicity -- 7.6.1 Synergism and Potentiation -- 7.6.2 Antagonism -- 7.6.3 Estimating the Toxicity of Mixtures -- 7.6.4 Simple Models of Mixture Toxicity -- 7.6.5 Mixture Estimation System -- 7.6.6 Estimating the Toxicity of Mixtures of Polynuclear Aromatic Hydrocarbons -- 7.7 Carbamate and Organophosphate Synergistic Toxicity -- 7.8 Climate Change and Toxicology -- Study Questions -- References and Suggested Readings -- Chapter 8: Inorganic Gaseous Pollutants -- 8.1 Sulfur Oxides -- 8.1.1 Sources of SO2 -- 8.1.2 Characteristics of SO2 -- 8.1.3 Effects on Plants -- 8.1.4 Effect on Animals -- 8.1.5 Effect on Humans -- 8.2 Nitrogen Oxides -- 8.2.1 Forms and Formation of Nitrogen Oxides -- 8.2.2 Major Reactive N Species in the Troposphere -- 8.2.3 Effects on Plants -- 8.2.4 Effects on Humans and Animals -- 8.2.5 Physiological Effects -- 8.2.6 Biochemical Effects -- 8.3 Ozone -- 8.3.1 Sources -- 8.3.2 Photochemical Smog -- 8.3.3 Effects on Plants -- 8.3.4 Effects on Humans and Animals -- 8.3.5 Biochemical Effects -- 8.4 Carbon Monoxide -- 8.4.1 Formation of CO -- 8.4.2 Human Exposure to CO -- 8.4.3 Toxicological Effects -- 8.4.4 Mechanism of Action -- Study Questions -- Refernces and Suggested Readings -- Chapter 9: Fluoride as a Contaminant of Developing Economies -- 9.1 Environmental Sources and Forms of Fluoride -- 9.1.1 Minerals and Soils -- 9.1.2 Natural Waters -- 9.1.3 Foods -- 9.1.4 Air -- 9.2 Industrial Sources of Fluoride Pollution -- 9.3 Effects on Plants -- 9.3.1 Injuries to Leaf Tissues. , 9.3.2 Effect on Germination.
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 716-725 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the surface chemistry of trimethylgallium and diethylgallium chloride on GaAs(100) surfaces as related to the atomic layer epitaxy (ALE) of GaAs. We have observed that during the Ga deposition, the reaction pathway of trimethylgallium changes such that there is significant CH3Ga emission at high Ga coverages. An examination of the Ga coverage dependence reveals that this stoichiometry dependent CH3Ga desorption can lead to self-limiting Ga deposition which is a prerequisite for ALE. Numerical simulation of the reaction shows reasonable agreement with low-pressure ALE growth data. Diethylgallium chloride was found to deposit GaCl on the GaAs surfaces, but with residence time decreasing rapidly with increasing Ga coverage. Again a numerical examination of this stoichiometry dependent phenomenon indicates that it can significantly contribute to the self-limiting Ga deposition. Both systems showed that stoichiometry dependent reactions can be important mechanisms for the atomic layer epitaxy process.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 53 (1981), S. 951-954 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 2323-2325 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A pulsed anodic etching method is developed to prepare light-emitting porous silicon. Under the same equivalent etching condition, pulsed etching can yield a more uniform porous silicon film with stronger photoluminescence intensity than the film prepared by ordinary dc etching. The atomic force microscopic observation shows that the porous silicon surface prepared by pulsed etching contains more widely separated Si columns but with steeper sidewalls, which are believed to result in the improvement of quantum confinement. The thickness of pulse etched porous silicon film is found to be much larger than that of a dc etched sample. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 1883-1885 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have used a combination of pulsed molecular beam and time-resolved mass spectrometry to study the kinetics of the pyrolysis of trimethylgallium on GaAs(100) surfaces. We found that CH3 is the major reaction product. Two CH3 desorption channels were observed, with activation energies 37.9±1.6 and 45.0±1.4 kcal/mole. An arsine ambient significantly accelerates the CH3 desorption, but no CH4 was observed. A model for the reaction of trimethylgallium on the GaAs(100) surface is proposed.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 1011-1013 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The initial reaction of the As-rich c(2×8) GaAs(100) surface with trimethylgallium (TMGa) has been studied by x-ray and ultraviolet photoemission. TMGa was found to chemisorb dissociatively at temperatures below 300 °C with many of the methyl radicals remaining on the surface. Bonding requirements and steric effects limit the saturation coverage to about 0.1 monolayer. At temperatures above 300 °C, TMGa was observed to dissociate on the surface, release all the methyl groups, and deposit Ga up to a self-limiting coverage. This process is most effective at high temperatures. We propose a model for the temperature dependence of the chemisorption which explains and unites many reported observations in the atomic layer epitaxy of GaAs using TMGa and arsine.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 4032-4037 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The reaction of phosphine PH3 and diborane B2H6 on Si(100) surfaces was studied by surface analytical techniques in relation to the in situ doping process in the chemical vapor deposition of silicon. Phosphine chemisorbs readily either nondissociatively at room temperature or dissociatively with the formation of silicon–hydrogen bonds at higher temperatures. Hydrogen can be desorbed at temperatures above 400 °C to generate a phosphorus layer. Phosphorus is not effective in shifting the Fermi level until the coverage reaches 2×1014/cm2. A maximum shift of 0.45 eV toward the conduction band was observed. In contrast, diborane has a very small sticking coefficient and the way to deposit boron is to decompose diborane directly on the silicon surface at temperatures above 600 °C. Boron at coverages less than 2×1014/cm2 is very effective in shifting the Fermi level toward the valence band and a maximum change of 0.4 eV was observed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 1014-1026 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe a compact system providing the capability of striking a sample surface with a short pulse of reactive gas in an UHV environment and monitoring the evolution of ensuing volatile reaction products. A 300-Hz rotating disk chopper synchronized with a pulsed valve produces molecular beam pulses of 12-μs FWHM at the chopper position. Only one stage of differential pumping separates the pulsed valve chamber from the target chamber with the latter under UHV conditions. The source of the molecular beam, comprised of the chambers containing the pulsed valve and the rotating disk chopper, occupies less than one square meter of floor space. Beam characterization is accomplished by the use of two UHV compatible fast ion gauges located in the target chamber. Reaction products are monitored with microsecond resolution via a differentially pumped quadrupole mass spectrometer located at right angles to the beam.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Thirty-six Ss, informed about the contingencies, were given differential SCR training with 3 different signals: CS+, CS−, and a signal which was random with respect to UCS occurrence. UCSs occurred randomly between trials and during random signal trials, were correlated with CS+ presence, and were absent during CS−. Employing nonspecific response frequency and amplitude, as well as responding during random signal trials, as baselines for comparison, evidence for both inhibitory and excitatory influences was obtained. The pattern of these influences was such as to question the proposition that a CS+ acquires general excitatory properties and a CS− acquires general inhibitory properties.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of medicinal chemistry 38 (1995), S. 613-616 
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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