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  • 11
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Cellular recognition -- Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (553 pages)
    Edition: 1st ed.
    ISBN: 9780323146265
    DDC: 599/.02/9
    Language: English
    Note: Front Cover -- Immune Surveillance -- Copyright Page -- Table of Contents -- Conferees -- Preface -- Introductory Note -- Chapter I. Organization and Modulation of Cell Membrane Receptors -- PHENOTYPIC DIVERSITY OF SURFACE STRUCTURE AMONG DIFFERENTIATED CELL POPULATIONS: -- CELL SURFACE INDIVIDUALITY CONFERRED BY CODED ARRANGEMENTS OF MEMBRANE UNITS -- APPLICATION OF THE CONCEPT OF CONFIGURATIONAL SPECIFICITY TO CANCER AND SURVEILLANCE -- CONCLUSIONS -- Chapter II. Triggering Mechanisms for Cellular Recognition -- Chapter III. Effector Mechanisms Activated by Cellular Recognition. -- Chapter IV. Routes of Escape from Surveillance -- Do tumor specific transplantation antigens exist? -- Does immunologic surveillance against tumors exist? -- Chapter V. Generation of Antibody Diversity and Self Tolerance - A New Theory -- antigens of our own cells -- Chapter VI. Evaluation of the Evidence for Immune Surveillance -- IMPRESSIONS AND COMMENTS -- ABBREVIATIONS -- AUTHOR INDEX -- SUBJECT INDEX.
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  • 12
    Online Resource
    Online Resource
    Milton :CRC Press LLC,
    Keywords: Ecology-Statistical methods. ; Electronic books.
    Description / Table of Contents: This handbook focuses on the enormous literature applying statistical methodology and modelling to environmental and ecological processes.
    Type of Medium: Online Resource
    Pages: 1 online resource (876 pages)
    Edition: 1st ed.
    ISBN: 9781498752121
    Series Statement: Chapman and Hall/CRC Handbooks of Modern Statistical Methods Series
    DDC: 363.700727
    Language: English
    Note: Cover -- Half Title -- Title Page -- Copyright Page -- Table of Contents -- Preface -- 1: Introduction -- I: Methodology for Statistical Analysis of Environmental Processes -- 2: Modeling for environmental and ecological processes -- 2.1 Introduction -- 2.2 Stochastic modeling -- 2.3 Basics of Bayesian inference -- 2.3.1 Priors -- 2.3.2 Posterior inference -- 2.3.3 Bayesian computation -- 2.4 Hierarchical modeling -- 2.4.1 Introducing uncertainty -- 2.4.2 Random effects and missing data -- 2.5 Latent variables -- 2.6 Mixture models -- 2.7 Random effects -- 2.8 Dynamic models -- 2.9 Model adequacy -- 2.10 Model comparison -- 2.10.1 Bayesian model comparison -- 2.10.2 Model comparison in predictive space -- 2.11 Summary -- 3: Time series methodology -- 3.1 Introduction -- 3.2 Time series processes -- 3.3 Stationary processes -- 3.3.1 Filtering preserves stationarity -- 3.3.2 Classes of stationary processes -- 3.3.2.1 IID noise and white noise -- 3.3.2.2 Linear processes -- 3.3.2.3 Autoregressive moving average processes -- 3.4 Statistical inference for stationary series -- 3.4.1 Estimating the process mean -- 3.4.2 Estimating the ACVF and ACF -- 3.4.3 Prediction and forecasting -- 3.4.4 Using measures of correlation for ARMA model identification -- 3.4.5 Parameter estimation -- 3.4.6 Model assessment and comparison -- 3.4.7 Statistical inference for the Canadian lynx series -- 3.5 Nonstationary time series -- 3.5.1 A classical decomposition for nonstationary processes -- 3.5.2 Stochastic representations of nonstationarity -- 3.6 Long memory processes -- 3.7 Changepoint methods -- 3.8 Discussion and conclusions -- 4: Dynamic models -- 4.1 Introduction -- 4.2 Univariate Normal Dynamic Linear Models (NDLM) -- 4.2.1 Forward learning: the Kalman filter -- 4.2.2 Backward learning: the Kalman smoother -- 4.2.3 Integrated likelihood. , 4.2.4 Some properties of NDLMs -- 4.2.5 Dynamic generalized linear models (DGLM) -- 4.3 Multivariate Dynamic Linear Models -- 4.3.1 Multivariate NDLMs -- 4.3.2 Multivariate common-component NDLMs -- 4.3.3 Matrix-variate NDLMs -- 4.3.4 Hierarchical dynamic linear models (HDLM) -- 4.3.5 Spatio-temporal models -- 4.4 Further aspects of spatio-temporal modeling -- 4.4.1 Process convolution based approaches -- 4.4.2 Models based on stochastic partial differential equations -- 4.4.3 Models based on integro-difference equations -- 5: Geostatistical Modeling for Environmental Processes -- 5.1 Introduction -- 5.2 Elements of point-referenced modeling -- 5.2.1 Spatial processes, covariance functions, stationarity and isotropy -- 5.2.2 Anisotropy and nonstationarity -- 5.2.3 Variograms -- 5.3 Spatial interpolation and kriging -- 5.4 Summary -- 6: Spatial and spatio-temporal point processes in ecological applications -- 6.1 Introduction - relevance of spatial point processes to ecology -- 6.2 Point processes as mathematical objects -- 6.3 Basic definitions -- 6.4 Exploratory analysis - summary characteristics -- 6.4.1 The Poisson process-a null model -- 6.4.2 Descriptive methods -- 6.4.3 Usage in ecology -- 6.5 Point process models -- 6.5.1 Modelling environmental heterogeneity - inhomogeneous Poisson processes and Cox processes -- 6.5.2 Modelling clustering - Neyman Scott processes -- 6.5.3 Modelling inter-individual interaction - Gibbs processes -- 6.5.4 Model fitting - approaches and software -- 6.5.4.1 Approaches -- 6.5.4.2 Relevant software packages -- 6.6 Point processes in ecological applications -- 6.7 Marked point processes - complex data structures -- 6.7.1 Different roles of marks in point patterns -- 6.7.2 Complex models - dependence between marks and patterns -- 6.7.3 Marked point pattern models reflecting the sampling process. , 6.8 Modelling partially observed point patterns -- 6.8.1 Point patterns observed in small subareas -- 6.8.2 Distance sampling -- 6.9 Discussion -- 6.9.1 Spatial point processes and geo-referenced data -- 6.9.2 Spatial point process modeling and statistical ecology -- 6.9.3 Other data structures -- 6.9.3.1 Telemetry data -- 6.9.3.2 Spatio-temporal patterns -- 6.9.4 Conclusion -- 6.10 Acknowledgments -- 7: Data assimilation -- 7.1 Introduction -- 7.2 Algorithms for data assimilation -- 7.2.1 Optimal interpolation -- 7.2.2 Variational approaches -- 7.2.3 Sequential approaches: the Kalman filter -- 7.3 Statistical approaches to data assimilation -- 7.3.1 Joint modeling approaches -- 7.3.2 Regression-based approaches -- 8: Univariate and Multivariate Extremes for the Environmental Sciences -- 8.1 Extremes and Environmental Studies -- 8.2 Univariate Extremes -- 8.2.1 Theoretical underpinnings -- 8.2.2 Modeling Block Maxima -- 8.2.3 Threshold exceedances -- 8.2.4 Regression models for extremes -- 8.2.5 Application: Fitting a time-varying GEV model to climate model output -- 8.2.5.1 Analysis of individual ensembles and all data -- 8.2.5.2 Borrowing strength across locations -- 8.3 Multivariate Extremes -- 8.3.1 Multivariate EVDs and componentwise block maxima -- 8.3.2 Multivariate threshold exceedances -- 8.3.3 Application: Santa Ana winds and dryness -- 8.3.3.1 Assessing tail dependence -- 8.3.3.2 Risk region occurrence probability estimation -- 8.4 Conclusions -- 9: Environmental Sampling Design -- 9.1 Introduction -- 9.2 Sampling Design for Environmental Monitoring -- 9.2.1 Design framework -- 9.2.2 Model-based design -- 9.2.2.1 Covariance estimation-based criteria -- 9.2.2.2 Prediction-based criteria -- 9.2.2.3 Mean estimation-based criteria -- 9.2.2.4 Multi-objective and entropy-based criteria -- 9.2.3 Probability-based spatial design. , 9.2.3.1 Simple random sampling -- 9.2.3.2 Systematic random sampling -- 9.2.3.3 Stratified random sampling -- 9.2.3.4 Variable probability sampling -- 9.2.4 Space-filling designs -- 9.2.5 Design for multivariate data and stream networks -- 9.2.6 Space-time designs -- 9.2.7 Discussion -- 9.3 Sampling for Estimation of Abundance -- 9.3.1 Distance sampling -- 9.3.1.1 Standard probability-based designs -- 9.3.1.2 Adaptive distance sampling designs -- 9.3.1.3 Designed distance sampling experiments -- 9.3.2 Capture-recapture -- 9.3.2.1 Standard capture-recapture -- 9.3.2.2 Spatial capture-recapture -- 9.3.3 Discussion -- 10: Accommodating so many zeros: univariate and multivariate data -- 10.1 Introduction -- 10.2 Basic univariate modeling ideas -- 10.2.1 Zeros and ones -- 10.2.2 Zero-inflated count data -- 10.2.2.1 The k-ZIG -- 10.2.2.2 Properties of the k-ZIG model -- 10.2.2.3 Incorporating the covariates -- 10.2.2.4 Model fitting and inference -- 10.2.2.5 Hurdle models -- 10.2.3 Zeros with continuous density G(y) -- 10.3 Multinomial trials -- 10.3.1 Ordinal categorical data -- 10.3.2 Nominal categorical data -- 10.4 Spatial and spatio-temporal versions -- 10.5 Multivariate models with zeros -- 10.5.1 Multivariate Gaussian models -- 10.5.2 Joint species distribution models -- 10.5.3 A general framework for zero-dominated multivariate data -- 10.5.3.1 Model elements -- 10.5.3.2 Specific data types -- 10.6 Joint Attribute Modeling Application -- 10.6.1 Host state and its microbiome composition -- 10.6.2 Forest traits -- 10.7 Summary and Challenges -- 11: Gradient Analysis of Ecological Communities (Ordination) -- 11.1 Introduction -- 11.2 History of ordination methods -- 11.3 Theory and background -- 11.3.1 Properties of community data -- 11.3.2 Coenospace -- 11.3.3 Alpha, beta, gamma diversity -- 11.3.4 Ecological similarity and distance. , 11.4 Why ordination? -- 11.5 Exploratory analysis and hypothesis testing -- 11.6 Ordination vs. Factor Analysis -- 11.7 A classification of ordination -- 11.8 Informal techniques -- 11.9 Distance-based techniques -- 11.9.1 Polar ordination -- 11.9.1.1 Interpretation of ordination scatter plots -- 11.9.2 Principal coordinates analysis -- 11.9.3 Nonmetric Multidimensional Scaling -- 11.10 Eigenanalysis-based indirect gradient analysis -- 11.10.1 Principal Components Analysis -- 11.10.2 Correspondence Analysis -- 11.10.3 Detrended Correspondence Analysis -- 11.10.4 Contrast between DCA and NMDS -- 11.11 Direct gradient analysis -- 11.11.1 Canonical Correspondence Analysis -- 11.11.2 Environmental variables in CCA -- 11.11.3 Hypothesis testing -- 11.11.4 Redundancy Analysis -- 11.12 Extensions of direct ordination -- 11.13 Conclusions -- II: Topics in Ecological Processes -- 12: Species distribution models -- 12.1 Aims of species distribution modelling -- 12.2 Example data used in this chapter -- 12.3 Single species distribution models -- 12.4 Joint species distribution models -- 12.4.1 Shared responses to environmental covariates -- 12.4.2 Statistical co-occurrence -- 12.5 Prior distributions -- 12.6 Acknowledgments -- 13: Capture-Recapture and distance sampling to estimate population sizes -- 13.1 Basic ideas -- 13.2 Inference for closed populations -- 13.2.1 Censuses and finite population sampling -- 13.2.2 The problem of imperfect detection -- 13.2.3 Capture-recapture on closed populations -- 13.2.4 Distance sampling methods on closed populations -- 13.2.5 N-mixture models for closed populations -- 13.2.6 Count regression -- 13.3 Inference for open populations -- 13.3.1 Crosbie-Manly-Schwarz-Arnason model -- 13.3.2 Cormack-Jolly-Seber model and tag-recovery models -- 13.3.3 Pollock's robust design. , 13.3.4 Capture recapture models for population growth rate.
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  • 13
    Online Resource
    Online Resource
    Singapore :Springer Singapore Pte. Limited,
    Keywords: Forests and forestry. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (442 pages)
    Edition: 1st ed.
    ISBN: 9789811019654
    Series Statement: Biofuels and Biorefineries Series
    Language: English
    Note: Intro -- Preface -- Acknowledgements -- Contents -- Contributors -- Editors' Biography -- Part I: Lignin and Its Production -- Chapter 1: Properties, Chemical Characteristics and Application of Lignin and Its Derivatives -- 1.1 Occurrence of Lignin in Biomass -- 1.1.1 Source, Monolignol Constituents and Sub-unit Structures -- 1.1.2 Distribution, Content and Chemical Structures of Lignin Sub-units -- 1.1.3 Biological Functions -- 1.1.4 Sources of Technical Lignin and Their Promise in Bio-­refining Process -- 1.2 Techniques for Determining Structural and Chemical Features of Lignin -- 1.2.1 Importance of Lignin Chemistry -- 1.2.2 Lignin Content -- 1.2.2.1 Wet Chemistry Methods -- 1.2.2.2 Spectroscopic Methods -- 1.2.3 Distribution of Lignin -- 1.2.3.1 Scanning Electron Microscopy and Atomic Force Microscopy Methods -- 1.2.3.2 Spectroscopy and Other Microscopy Methods -- 1.2.4 Molecular Weight and Polydispersity -- 1.2.5 Functional Side-Chain Groups -- 1.2.5.1 Nuclear Magnetic Resonance Methods -- 1.2.5.2 UV and GC-FID Methods -- 1.2.6 Content of Phenolic Units of Lignin -- 1.2.7 Content of Inter-molecular Linkages -- 1.2.7.1 13C- and 31P NMR Methods -- 1.2.7.2 FT-IR Spectroscopy Method -- 1.2.8 Lignin-Lignin Linkages and Macromolecular Assembly -- 1.2.8.1 Chemical Oxidation and GC-MS/FID Method -- 1.2.8.2 Pyrolysis Degradation and GC-MS/FID Method -- 1.2.8.3 Chemo-Thermo Degradation Method -- 1.2.8.4 Enzymatic Oxidization and Resonance Raman Spectroscopy Method -- 1.3 Derivatization and End-Use of Lignin and Lignin Derivatives -- 1.3.1 Sources of Lignocellulosic Biomass for Technical Lignin Derivatives -- 1.3.2 Application of Lignin and Lignin Derivatives -- 1.3.2.1 Energy -- 1.3.2.2 Renewable Chemicals -- 1.3.2.3 Materials and Additives -- 1.4 Conclusions and Future Outlook -- References. , Chapter 2: Extraction of Technical Lignins from Pulping Spent Liquors, Challenges and Opportunities -- 2.1 Introduction -- 2.2 Kraft Pulping Process -- 2.2.1 Properties of Black Liquor -- 2.2.2 Acidification -- 2.2.3 Membrane -- 2.2.4 Electrolysis -- 2.2.5 Solvent -- 2.3 Prehydrolysis Based Kraft Process -- 2.3.1 Properties of PHL -- 2.3.2 Acidification of PHL -- 2.3.3 Adsorption -- 2.3.4 Flocculation -- 2.3.5 In Situ Adsorption/Flocculation System -- 2.4 Spent Liquor of Sulfite Process -- 2.4.1 Properties of Spent Liquor -- 2.4.2 Membrane -- 2.4.3 Amine Extraction -- 2.4.4 Electrolysis -- 2.4.5 Ion Exchange Resin -- 2.5 Isolation of Lignosulfonate from Spent Liquor of NSSC Process -- 2.5.1 Properties of Spent Liquor in NSSC Process -- 2.5.2 Adsorption/Flocculation/Coagulation -- 2.5.3 Solvent Extraction -- 2.6 Conclusions and Future Outlook -- References -- Chapter 3: Recovery of Low-Ash and Ultrapure Lignins from Alkaline Liquor By-Product Streams -- 3.1 Introduction and Background -- 3.1.1 Low-Ash Lignins from Alkaline Liquors -- 3.1.2 From Low-Ash to Ultrapure Lignins -- 3.2 Low-Ash Lignins via the SLRP Process -- 3.2.1 Procedure -- 3.2.1.1 Carbonation -- 3.2.1.2 Acidification -- 3.2.1.3 Filtration -- 3.2.1.4 Vent-Gas Capture -- 3.2.2 Properties of Liquid-Lignin Phase -- 3.2.3 Fractionating the Liquid-Lignin Phase via SLRP for Control of the Bulk and Molecular Properties of Lignin -- 3.3 Ultrapure Lignins via the ALPHA Process -- 3.3.1 Liquid-Liquid Equilibrium Phase Behavior for the Acetic Acid-Water-Lignin System -- 3.3.2 ALPHA as a Single-Stage, Batch Process -- 3.3.3 Two-Stage Batch ALPHA for Generating Ultrapure Lignins -- 3.3.4 ALPHA as a Continuous Process: Minimizing Residence Times and Maximizing Throughputs for Ultrapure Lignins -- 3.4 Conclusions and Future Outlook -- References -- Part II: Biological Conversion. , Chapter 4: Lignin Degrading Fungal Enzymes -- 4.1 Introduction -- 4.2 Carbohydrate Active Enzyme Database (CAZy) -- 4.3 Fungal Oxidative Lignin Enzymes (FOLy) -- 4.4 Lignin Oxidizing Enzymes (LO) -- 4.4.1 Laccases (EC 1.10.3.2, Benzenediol: Oxygen Oxidoreductase) -- 4.4.2 Peroxidases (EC:1.11.1.x) -- 4.4.3 Lignin Peroxidases (E.C. 1.11.1.14) -- 4.4.4 Manganese Peroxidases (EC 1.11.1.13) -- 4.4.5 Versatile Peroxidases -- 4.5 Cellobiose Dehydrogenase -- 4.6 Lignin Degrading Auxiliary Enzymes (LDA) -- 4.6.1 Aryl Alcohol Oxidase -- 4.6.2 Vanillyl Alcohol Oxidase -- 4.6.3 Glyoxal Oxidase -- 4.6.4 Pyranose Oxidase -- 4.6.5 Galactose Oxidase -- 4.6.6 Glucose Oxidase -- 4.6.7 Benzoquinone Reductase -- 4.7 A Short Note on Genome Sequencing Studies of Lignin Degrading Fungi -- 4.8 Conclusion and Future Outlook -- References -- Chapter 5: Bacterial Enzymes for Lignin Oxidation and Conversion to Renewable Chemicals -- 5.1 Discovery of Lignin-Metabolising Bacteria -- 5.2 Bacterial Enzymes for Lignin Biotransformation -- 5.2.1 Dye-Decolorizing Peroxidases -- 5.2.2 Bacterial Laccases -- 5.2.3 Glutathione-Dependent β-Etherase Enzymes -- 5.2.4 Other Lignin-Metabolising Enzymes -- 5.3 Metabolic Pathways for Lignin Metabolism in Bacteria -- 5.4 Use of Metabolic Engineering for Generation of Renewable Chemicals from Lignin -- 5.5 Conclusions and Future Outlook -- References -- Chapter 6: Lignin Biodegradation with Fungi, Bacteria and Enzymes for Producing Chemicals and Increasing Process Efficiency -- 6.1 Introduction -- 6.2 Fungal Degradation -- 6.2.1 Delignification -- 6.2.2 Waste Treatment -- 6.2.3 Chemical Production -- 6.2.4 Perspectives -- 6.3 Bacterial Degradation -- 6.3.1 Delignification -- 6.3.2 Chemical Production -- 6.3.3 Perspectives -- 6.4 Enzymatic Degradation -- 6.4.1 Laccases -- 6.4.2 Peroxidases -- 6.4.3 Cocktails. , 6.4.4 Bioinspired Enzyme-Like Synthetic Compounds -- 6.4.5 Perspectives -- 6.5 Conclusion and Future Outlook -- References -- Part III: Chemical Conversion -- Chapter 7: Chemical Modification of Lignin for Renewable Polymers or Chemicals -- 7.1 Introduction -- 7.1.1 Lignin: An Important Renewable Resource -- 7.1.2 Possible Uses of Lignin -- 7.1.3 The Types of Chemical Modifications Carried Out on Lignin -- 7.1.3.1 Alkylation and Oxidation -- 7.1.3.2 Alkylation and Thioacidolysis -- 7.1.3.3 Halogenation -- 7.1.3.4 Nitration -- 7.1.3.5 Amination -- 7.1.3.6 Phosphitylation -- 7.1.3.7 Other Chemical Modifications of Lignin -- 7.2 Depolymerization of Modified Lignin -- 7.2.1 Sequential Lignin Modification Applied to Lignin Structural Analysis -- 7.2.2 Benzylic Oxidations Followed by Cleavage as a Route to Chemicals -- 7.3 Lignin Modification Leading to Novel Polymeric Materials -- 7.3.1 Overview -- 7.3.2 Reaction with Mono-functional Monomers -- 7.3.2.1 'Grafting Onto' Approach -- 7.3.2.2 'Grafting From' Approach -- 7.3.3 Reaction with Multi-functional Monomers -- 7.3.3.1 Phenol Formaldehyde Thermoset Materials -- 7.3.3.2 Polyurethanes -- 7.3.4 Polymer Blending -- 7.3.5 Smart Lignin Materials -- 7.4 Concluding Remarks & -- Future Outlook -- References -- Chapter 8: Carbon Materials from Lignin and Their Applications -- 8.1 Introduction -- 8.2 Activated Carbons from Lignin -- 8.2.1 Physical Activation -- 8.2.2 Chemical Activation -- 8.2.3 Applications of Lignin-Derived Activated Carbons -- 8.2.3.1 Applications in Adsorption -- 8.2.3.2 Applications in Catalysis -- 8.3 Lignin-Based Carbon Fibers -- 8.3.1 Lignin-Based CFs by Melt-Spinning Methods -- 8.3.2 Electrospinning -- 8.3.3 Oxidative Thermostabilization of Lignin Fibers -- 8.3.4 Potential Applications of Lignin-Based Carbon Fibers -- 8.3.4.1 CFs for Structural Applications. , 8.3.4.2 CFs for Functional Applications -- 8.4 Templated Carbons from Lignin -- 8.5 Lignin Graphitization -- 8.6 Conclusions and Future Outlook -- References -- Chapter 9: Biofuels and Chemicals from Lignin Based on Pyrolysis -- 9.1 Introduction -- 9.2 Fundamentals of Lignin Pyrolysis -- 9.2.1 Lignin Structures Related to Complexity of Pyrolysis -- 9.2.2 Pyrolysis Kinetics of Lignin -- 9.2.3 Py-GC/MS of Lignin -- 9.2.4 Factors Affecting Lignin Pyrolysis -- 9.3 Pyrolysis of Technical Lignin -- 9.3.1 Pyrolysis of Lignin in Lab-Scale Reactors -- 9.3.2 Properties of Lignin Pyrolysis Oil -- 9.4 Catalytic Upgrading of Lignin -- 9.4.1 Catalytic Upgrading of Pyrolysis Vapor of Lignin -- 9.4.2 Catalytic Upgrading of Phenolic Oil -- 9.5 Application of Lignin Pyrolysis Products -- 9.6 Conclusions and Future Outlook -- References -- Chapter 10: Lignin Depolymerization (LDP) with Solvolysis for Selective Production of Renewable Aromatic Chemicals -- 10.1 Introduction -- 10.2 Lignin in Conventional Heating -- 10.2.1 Hydrogenolysis -- 10.2.2 Hydrogen-Donor Solvent System -- 10.2.3 Hydrogen-Involved System -- 10.2.4 Oxidativelysis -- 10.2.5 Organometallic Catalysts -- 10.2.6 Metal-Free-Organic Catalysts -- 10.2.7 Acid/Base Catalysts -- 10.2.8 Metal Salt Catalysts -- 10.2.9 Two-Step LDP -- 10.3 LDP Assisted by microwave Heating -- 10.3.1 Hydrogenolysis -- 10.3.2 Oxidativelysis -- 10.4 Conclusions and Future Outlook -- References -- Chapter 11: Molecular Mechanisms in the Thermochemical Conversion of Lignins into Bio-Oil/Chemicals and Biofuels -- 11.1 Introduction -- 11.2 Lignin Devolatilization Temperature -- 11.3 Pyrolysis Products and Effects of Temperature -- 11.4 Primary Pyrolysis Reactions -- 11.4.1 Model Compound Reactivity -- 11.4.2 Ether Cleavage Mechanisms -- 11.4.3 Radical Chain Reactions -- 11.4.4 Re-polymerization and Side Chain Conversion. , 11.4.5 Side-Chain Conversion Mechanism.
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  • 14
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Whelan, Jean K; Oremland, Ronald S; Tarafa, Martha; Smith, Richard; Howarth, Robert; Lee, Cindy (1986): Evidence for sulfate-reducing and methane-producing microorganisms in sediments from Sites 618, 619, and 622. In: Bouma, AH; Coleman, JM; Meyer, AW; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 96, 767-775, https://doi.org/10.2973/dsdp.proc.96.147.1986
    Publication Date: 2023-05-12
    Description: Radiolabeled products were formed from labeled substrates during anaerobic incubation of sediments from Sites 618, 619, and 622. One set of experiments formed 14CO2, 14CH4, and 35SH2 from 2-14C-acetate and 35S-sulfate; a second set formed 14CH4 from 14C-methylamine or 14C-trimethylamine. Levels of 14CO2 and 35S2 formed were two to three orders of magnitude greater than 14CH4. Production of 14CH4 by Deep Sea Drilling Project (DSDP) sediments was four to five orders of magnitude less than that formed by anoxic San Francisco Bay sediment. However, incubation of Site 622 sediment slurries under H2 demonstrated production of small quantities of CH4. These results indicate that DSDP sediments recovered from 4 to 167 m sub-bottom (age 85,000-110,000 yr.) harbor potential microbial activity which includes sulfate reducers and methanogens. Analysis of pore waters from these DSDP sites indicates that bacterial substrates (acetate, methylated amines) were present.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 15
    Publication Date: 2023-06-27
    Keywords: 96-619; Acetate; Acetate, standard deviation; Carbon, organic, total; Carbon, organic, total, standard deviation; Deep Sea Drilling Project; DEPTH, sediment/rock; Dimethylamine, dissolved; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Gulf of Mexico; Leg96; Methane; Monomethylamine; Sample code/label; see reference(s); Sulfate; Trimethylamine
    Type: Dataset
    Format: text/tab-separated-values, 123 data points
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  • 16
    Publication Date: 2023-06-27
    Keywords: 96-618; Acetate; Acetate, standard deviation; Carbon, organic, total; Carbon, organic, total, standard deviation; Deep Sea Drilling Project; DEPTH, sediment/rock; Dimethylamine, dissolved; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Gulf of Mexico/BASIN; Leg96; Methane; Monomethylamine; Sample code/label; see reference(s); Sulfate; Trimethylamine
    Type: Dataset
    Format: text/tab-separated-values, 33 data points
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  • 17
    Publication Date: 2014-06-25
    Description: wo commonly used proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) are the TEX86 (TetraEther indeX of 86 carbon atoms) paleothermometer for sea surface temperature reconstructions and the BIT (Branched Isoprenoid Tetraether) index for reconstructing soil organic matter input to the ocean. An initial round-robin study of two sediment extracts, in which 15 laboratories participated, showed relatively consistent TEX86 values (reproducibility ±3–4°C when translated to temperature) but a large spread in BIT measurements (reproducibility ±0.41 on a scale of 0–1). Here we report results of a second round-robin study with 35 laboratories in which three sediments, one sediment extract, and two mixtures of pure, isolated GDGTs were analyzed. The results for TEX86 and BIT index showed improvement compared to the previous round-robin study. The reproducibility, indicating interlaboratory variation, of TEX86 values ranged from 1.3 to 3.0°C when translated to temperature. These results are similar to those of other temperature proxies used in paleoceanography. Comparison of the results obtained from one of the three sediments showed that TEX86 and BIT indices are not significantly affected by interlaboratory differences in sediment extraction techniques. BIT values of the sediments and extracts were at the extremes of the index with values close to 0 or 1, and showed good reproducibility (ranging from 0.013 to 0.042). However, the measured BIT values for the two GDGT mixtures, with known molar ratios of crenarchaeol and branched GDGTs, had intermediate BIT values and showed poor reproducibility and a large overestimation of the “true” (i.e., molar-based) BIT index. The latter is likely due to, among other factors, the higher mass spectrometric response of branched GDGTs compared to crenarchaeol, which also varies among mass spectrometers. Correction for this different mass spectrometric response showed a considerable improvement in the reproducibility of BIT index measurements among laboratories, as well as a substantially improved estimation of molar-based BIT values. This suggests that standard mixtures should be used in order to obtain consistent, and molar-based, BIT values.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 18
    Publication Date: 2021-07-10
    Description: Major controls on river salinity (total dissolved solids) in the western United States are climate, geology, and human activity. Climate, in general, influences soil-river salinity via salt-balance variations. When climate becomes wetter, river discharge increases and soil-river salinity decreases; when climate becomes drier river discharge decreases and soil-river salinity increases. This study characterizes the river salinity response to discharge using statistical-dynamic methods. An exploratory analysis of river salinity, using early 1900s water quality surveys in the western United States, shows much river salinity variability is in response to storm and annual discharge. Presumably this is because river discharge is largely supported by surface flow.
    Keywords: Earth Sciences ; Limnology ; PACLIM ; hydrology
    Repository Name: AquaDocs
    Type: conference_item
    Format: application/pdf
    Format: application/pdf
    Format: 145-153
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  • 19
    Publication Date: 2022-05-25
    Description: Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry Geophysics Geosystems 10 (2009): Q03012, doi:10.1029/2008GC002221.
    Description: Recently, two new proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) were proposed, i.e., the TEX86 proxy for sea surface temperature reconstructions and the BIT index for reconstructing soil organic matter input to the ocean. In this study, fifteen laboratories participated in a round robin study of two sediment extracts with a range of TEX86 and BIT values to test the analytical reproducibility and repeatability in analyzing these proxies. For TEX86 the repeatability, indicating intra-laboratory variation, was 0.028 and 0.017 for the two sediment extracts or ±1–2°C when translated to temperature. The reproducibility, indicating among-laboratory variation, of TEX86 measurements was substantially higher, i.e., 0.050 and 0.067 or ±3–4°C when translated to temperature. The latter values are higher than those obtained in round robin studies of Mg/Ca and U37 k′ paleothermometers, suggesting the need to primarily improve compatibility between labs. The repeatability of BIT measurements for the sediment with substantial amounts of soil organic matter input was relatively small, 0.029, but reproducibility was large, 0.410. This large variance could not be attributed to specific equipment used or a particular data treatment. We suggest that this may be caused by the large difference in the molecular weight in the GDGTs used in the BIT index, i.e., crenarchaeol versus the branched GDGTs. Potentially, this difference gives rise to variable responses in the different mass spectrometers used. Calibration using authentic standards is needed to establish compatibility between labs performing BIT measurements.
    Keywords: TEX86 ; BIT ; Round robin ; HPLC/MS
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 20
    Publication Date: 2022-05-25
    Description: Author Posting. © American Meteorological Society 2006. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 19 (2006): 2122–2143, doi:10.1175/JCLI3761.1.
    Description: The Community Climate System Model version 3 (CCSM3) has recently been developed and released to the climate community. CCSM3 is a coupled climate model with components representing the atmosphere, ocean, sea ice, and land surface connected by a flux coupler. CCSM3 is designed to produce realistic simulations over a wide range of spatial resolutions, enabling inexpensive simulations lasting several millennia or detailed studies of continental-scale dynamics, variability, and climate change. This paper will show results from the configuration used for climate-change simulations with a T85 grid for the atmosphere and land and a grid with approximately 1° resolution for the ocean and sea ice. The new system incorporates several significant improvements in the physical parameterizations. The enhancements in the model physics are designed to reduce or eliminate several systematic biases in the mean climate produced by previous editions of CCSM. These include new treatments of cloud processes, aerosol radiative forcing, land–atmosphere fluxes, ocean mixed layer processes, and sea ice dynamics. There are significant improvements in the sea ice thickness, polar radiation budgets, tropical sea surface temperatures, and cloud radiative effects. CCSM3 can produce stable climate simulations of millennial duration without ad hoc adjustments to the fluxes exchanged among the component models. Nonetheless, there are still systematic biases in the ocean–atmosphere fluxes in coastal regions west of continents, the spectrum of ENSO variability, the spatial distribution of precipitation in the tropical oceans, and continental precipitation and surface air temperatures. Work is under way to extend CCSM to a more accurate and comprehensive model of the earth's climate system.
    Description: We would like to acknowledge the substantial contributions to and support for the CCSM project from the National Science Foundation (NSF), the Department of Energy (DOE), the National Oceanic and Atmospheric Administration, and the National Aeronautics and Space Administration.
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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