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  • San Diego :Elsevier Science & Technology,  (6)
  • The American Society for Biochemistry and Molecular Biology (ASBMB)  (2)
  • AGU (American Geophysical Union)  (1)
  • 1
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Peroxides -- Analysis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (130 pages)
    Edition: 1st ed.
    ISBN: 9781483160191
    Language: English
    Note: Front Cover -- The Determination of Organic Peroxides -- Copyright Page -- Table of Contents -- PREFACE -- CHAPTER 1. INTRODUCTION -- 1. Lipid Peroxides -- 2 . Polymers -- 3 . Petrochemicals -- 4 . Irradiation -- 5. Miscellaneous -- References -- CHAPTER 2 . STRUCTURE AND REACTIVITY -- 1 . Classification of peroxides -- 2 . Reactivity -- References -- CHAPTER 3. IODOMETRIC METHODS -- 1 . General comments -- 2. Choice of solvent -- 3 . Reaction conditions -- 4 . Titration with thiosulphate -- References -- CHAPTER 4 . FERROUS ION METHODS -- 1 . Introduction -- 2 . Choice of reagent -- 3. Choice of solvent -- 4 . Titration with titanous ions -- 5 . Titration with dichromate ions -- 6 . Titration with mercurous ions -- References -- CHAPTER 5. FURTHER TITRIMETRIC REAGENTS -- 1 . Introduction -- 2 . Arsenious methods -- 3 . Stannous methods -- 4 . Titanous methods -- 5 . Titration with anions -- 6. Sulphides and mercaptans -- References -- CHAPTER 6 . COLORIMETRIC METHODS -- 1 . Introduction -- 2 . Ferrous ions -- 3 . Leuco base of methylene blue -- 4 . Iodine -- 5. iV,A^'-Dimethyl-/?-phenylenediamme -- 6. Other colorimetric reagents -- References -- CHAPTER 7 . POLAROGRAPHIC METHODS -- 1 . Introduction -- 2 . Electrode reaction -- 3 . Polarographic teclmiques for peroxides -- 4 . Nature and concentration of peroxide -- 5 . Solvents and supporting electrolytes -- References -- CHAPTER 8. SPECTROSCOPIC TECHNIQUES -- 1 . Introduction -- 2 . Ultraviolet and visible absorption -- 3 . Infrared absorption -- 4 . Raman spectroscopy -- References -- CHAPTER 9 . CHROMATOGRAPHIC METHODS A. COLUMN CHROMATOGRAPHY -- 1 . Introduction -- 2 . Column techniques -- 3 . Solvent medium -- 4 . Stationary phase -- 5 . Type of peroxide -- References -- CHAPTER 10 . CHROMATOGRAPHIC METHODS B. PAPER CHROMATOGRAPHY -- 1 . Introduction -- 2 . Choice of paper. , 3. Mobile phase -- 4 . General techniques -- 5 . Chemical structure -- 6 . Detection -- 7 . Class of peroxide -- References -- CHAPTER 11 . CHROMATOGRAPHIC METHODS C. THIN-LAYER CHROMATOGRAPHY -- 1 . Introduction -- 2 . Adsorbents -- 3 . Solvent systems -- 4. Detection -- 5. Techniques -- 6. Applications -- References -- CHAPTER 12. CHROMATOGRAPHIC METHODS D. GAS CHROMATOGRAPHY -- 1. Introduction -- 2. Solid support -- 3. Stationary phase -- 4. Column temperature -- 5. Functional groups -- 6. Quantitative analysis -- References -- CHAPTER 13. CHOICE OF METHOD -- 1. Introduction -- 2. Concentration of peroxide -- 3. Reactivity of peroxide -- 4. Nature of the sample -- INDEX.
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  • 2
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Epoxy compounds -- Analysis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (88 pages)
    Edition: 1st ed.
    ISBN: 9781483150536
    Language: English
    Note: Front Cover -- The Determination of Epoxide Groups -- Copyright Page -- Table of Contents -- PREFACE -- CHAPTER 1. INTRODUCTION -- 1. General considerations -- 2. The determination of epoxide groups -- 3. Analytical methods -- References -- CHAPTER 2. METHODS INVOLVING EPOXIDE RING-OPENING BY HALOGEN ACIDS -- INTRODUCTION -- 1. Procedures considered -- 2. General comments -- 3. Interference effects -- 4. Convenience of the various procedures -- 5. Accuracy -- 6. Conclusions -- References -- CHAPTER 3. OTHER METHODS FOR EPOXIDE DETERMINATION -- INTRODUCTION -- 1. Methods considered -- 2. General comments -- References -- CHAPTER 4. CONCLUSIONS -- Chemical methods -- Physical methods -- Very sensitive methods -- Final comments -- INDEX.
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  • 3
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Carboxylic acids -- Analysis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (141 pages)
    Edition: 1st ed.
    ISBN: 9781483151250
    Language: English
    Note: Front Cover -- The Determination of Carboxylic Functional Groups -- Copyright Page -- Table of Contents -- Preface -- CHAPTER 1. INTRODUCTION -- CHAPTER 2. THE DETERMINATION OF CARBOXYLIC ACIDS -- 1. GENERAL -- 2. ACID-BASE EQUILIBRIUM IN WATER -- 3 . ACID-BASE EQUILIBRIUM IN NON-AQUEOUS MEDIA -- 4 . TITRIMETRIC DETERMINATION OF ACIDS -- 5. SPECTROPHOTOMETRIC METHODS -- 6. CHROMATOGRAPHIC METHODS -- 7. COUNTERCURRENT SEPARATION OF ORGANIC ACIDS -- 8. ELECTROPHORETIC SEPARATION OF ORGANIC ACIDS -- 9 . POLAROGRAPHY OF ORGANIC ACIDS -- 10. SOME OTHER CHEMICAL METHODS -- REFERENCES -- CHAPTER 3. THE DETERMINATION OF ACID ANHYDRIDES AND ACID CHLORIDES -- A. ACID ANHYDRIDES -- B. ACID CHLORIDES -- REFERENCES -- CHAPTER 4. THE DETERMINATION OF ESTERS -- 1. GENERAL -- 2. SAPONIFICATION METHODS -- 3 . SOME SPECIFIC METHODS -- 4. SPECTROSCOPIC METHODS -- 5. CHROMATOGRAPHY OF ESTERS -- 6 . SOME OTHER PHYSICAL METHODS -- 7. DETERMINATION OF LACTONES -- REFERENCES -- CHAPTER 5. DETERMINATION OF AMIDES -- 1. GENERAL -- 2. GENERAL METHODS -- 3 . USE OF GRIGNARD'S REAGENT -- 4. SPECIFIC METHODS FOR PRIMARY AMIDES -- REFERENCES -- CHAPTER 6. THE ANALYSIS OF BINARY AND TERNARY MIXTURES -- 1. GENERAL -- 2. DIFFERENTIATION OF ACIDS -- 3. MIXTURES OF ACIDS AND ANHYDRIDES -- 4. MIXTURES OF ACIDS AND ACID CHLORIDES -- 5. MIXTURES OF ACIDS AND ESTERS -- 6. MIXTURES OF ACIDS AND AMIDES -- REFERENCES -- INDEX.
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  • 4
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Cyanogen compounds -- Analysis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (153 pages)
    Edition: 1st ed.
    ISBN: 9781483278612
    Language: English
    Note: Front Cover -- Analytical Methods for Organic Cyano Groups -- Copyright Page -- Table of Contents -- PREFACE -- CHAPTER 1. INTRODUCTION -- References -- PART A: CHEMICAL METHODS -- GENERAL INTRODUCTION -- CHAPTER 2. REACTIONS OF (ADDITION TO) THE CYANO GROUP -- Introduction -- 1. Reduction: -CN-CH2-NH2 -- 2. Hydrolysis -- 3. Addition of Hydrogen Sulphide -- 4. Addition of Alcohols -- 5. Addition of Ammonia -- 6. Addition of Hydroxylamine -- 7. Addition of Hydrazine -- 8. Addition of Mercaptans -- 9. Addition of Polyphenols -- 10. Addition of Grignard Reagent -- 11. Preparation of N-(2-Chloroalkyl) amides -- 12. Formation of Metal Complexes -- References -- CHAPTER 3. REACTIONS OF GROUPS ACTIVATED BY THE CYANO GROUP -- Introduction -- 1. α,β-Unsaturated Nitriles -- 2. Compounds Containing the - CH2CN or =CHCN Group -- 3. Compounds Containing the - NH - or NH2 Group Attached to -CN -- References -- CHAPTER 4. REACTIONS OF GROUPS SENSIBLY UNAFFECTED BY THE CYANO GROUP -- 1. Higher Aliphatic Nitriles -- 2.β,γ-Unsaturated Nitriles -- 3. Aromatic Groups in Nitriles -- 4. Halogen Atoms in Trichloroacetonitrile -- 5. Azo Group in Azobisisobutyronitrile -- 6. Hydrazo Group in 2,2'-Hydrazobisisobutyronitrile -- 7. Ester Group in Nitriles -- 8. Amino Groups (not Directly Linked to a Cyano Group) -- 9. Amidino or Guanidino Group in Dicyanodiamide -- 10. Cobalt in Vitamin B12 (Cyanocobalamin) -- 11. 5,6-Dimethylbenzimidazole in Vitamin B12 -- References -- CHAPTER 5. DEGRADATION REACTIONS DURING WHICH THE CYANO GROUP REMAINS INTACT -- Introduction -- 1. Pyrolysis without Added Reagent -- 2. Pyrolysis in Presence of Oxidising Agents -- 3. Pyrolysis in Presence of a Base -- 4. Reductive Fission of N-cyano Compounds -- 5. Hydrolytic Fission of Cyanohydrins -- 6. Formation of Bromine Cyanide, BrCN. , 7. Elimination of the Cyano Group in the Analytical Methods for Ethyl Dimethylphosphoramidocyanidate (Tabun) -- 8. Elimination of the Cyano Group as Hydrocyanic Acid in Determination of Vitamin B12 -- 9. Formation of Thiocyanic Acid by Reaction with Sulphur -- References -- CHAPTER 6. DEGRADATION REACTIONS INVOLVING DESTRUCTION OF THE CYANO GROUP -- References -- CHAPTER 7. MISCELLANEOUS CHEMICAL METHODS -- References -- PART B: PHYSICAL METHODS -- GENERAL INTRODUCTION -- CHAPTER 8. SPECTROSCOPIC AND SPECTROPHOTOMETRIC METHODS -- 1. Infrared -- 2. Ultraviolet and Visible -- 3. Mass Spectrometry -- 4. Flame Spectroscopy -- 5. Nuclear Magnetic Resonance -- References -- CHAPTER 9. CHROMATOGRAPHIC METHODS -- 1. Gas Chromatography -- 2. Other Chromatographic Methods, Principally PC and TLC -- References -- CHAPTER 10. ION EXCHANGE -- References -- CHAPTER 11. POLAROGRAPHY -- References -- CHAPTER 12. AZEOTROPIC DISTILLATION -- References -- AUTHOR INDEX -- SUBJECT INDEX.
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  • 5
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Oxidation. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (204 pages)
    Edition: 1st ed.
    ISBN: 9781483160801
    Language: English
    Note: Front Cover -- Periodate Oxidation of Diol and Other Functional Groups: Analytical and Structural Applications -- Copyright Page -- Table of Contents -- PREFACE -- INTRODUCTION -- CHAPTER 1. HISTORY -- Literature Cited -- CHAPTER 2. PREPARATION AND PROPERTIES OF PERIODATES -- Preparation -- Solubility -- Stability of Aqueous Solutions -- Standard Potentials -- Ionization of Periodic Acid -- Structure of Periodates -- Literature Cited -- CHAPTER 3. MECHANISM OF PERIOD ATE OXIDATION -- 1,2-Diols -- 1,2-Hydroxycarbonyl Compounds and 1,2-Diketones -- 1,2-Aminoalcohols -- Active Méthylène Groups -- Literature Cited -- CHAPTER 4. ANOMALOUS PERIODATE OXIDATIONS -- Overoxidation -- Sulfur-containing Compounds -- Phenols -- Flavanols -- Amines -- Amino Acids -- Unsaturated Sugars -- Amino Sugars -- Proteins -- Oxidations at Elevated Temperature -- Oxidations in the Presence of Light -- Literature Cited -- CHAPTER 5. PERIODATE OXIDATION IN STRUCTURAL STUDIES -- Structure Assignment based on Periodate Oxidation Information -- Structure Assignment based on Periodate Oxidation and Other Information -- Structure and End-group Assay of Polysaccharides -- Nature of the Product of Periodate Oxidation -- Literature Cited -- CHAPTER 6. ANALYTICAL METHODS -- Conditions of the Oxidation -- Determination of Oxidant Consumption -- Other Methods for Periodate Determination -- Determination of Acid Produced -- Determination of Other Acids -- Determination of Formaldehyde -- Determination of Acetaldehyde -- Determination of Ammonia and Amines -- Determination of Carbon Dioxide -- Recommended General Methods -- Conclusions -- Literature Cited -- CHAPTER 7. SYNTHETIC AND OTHER APPLICATIONS OF PERIODATE OXIDATIONS -- Literature Cited -- AUTHOR INDEX -- SUBJECT INDEX.
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  • 6
    Online Resource
    Online Resource
    San Diego :Elsevier Science & Technology,
    Keywords: Hydrazides -- Analysis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (410 pages)
    Edition: 1st ed.
    ISBN: 9781483153001
    Language: English
    Note: Front Cover -- The Determination of Hydrazino-Hydrazide Groups -- Copyright Page -- Table of Contents -- Dedication -- PREFACE -- GENERAL INTRODUCTION -- CHAPTER 1. OXIDATION METHODS -- 1. Use of Bromate -- 2. Use of Bromine -- 3. Use of N-Bromosuccinimide -- 4. Use of Ceric Sulfate -- 5. Use of Ceric Sulfate-Iodine Monochloride -- 6. Use of Diethylenetetraammonium Ceric Sulfate -- 7. Use of Chloramine-T -- 8. Use of Chloramine-T-Iodine Monochloride -- 9. Use of Chloramine-B -- 10. Use of Chloramine-B-Iodine Monochloride -- 11. Use of Copper Oxide -- 12. Use of Copper Oxide-Fehling's Solution -- 13. Use of Copper Sulfate -- 14. Use of Dichromate -- 15. Use of Potassium Ferricyanide-Ascorbic Acid -- 16. Use of Ferricyanide-Ceric Sulfate -- 17. Use of Ferricyanide-Zinc Sulfate -- 18. Use of Hypochlorous Acid -- 19. Use of Hypochlorite -- 20. Use of lodic Acid -- 21. Use of Iodine -- 22. Use of Iodate -- 23. Use of Periodate -- 24. Use of Periodate-Iodine Bromide -- 25· Use of Periodate-Iodine Cyanide -- 26. Use of Permanganate -- 27. Use of Selenious Acid -- 28. Use of Thallium -- 29. Use of Vanadic Acid -- References -- CHAPTER 2. GASOMETRIC METHODS -- 1. Use of Bromate -- 2. Use of Bromine-Hypobromite -- 3. Use of Cupric-Fehling's Solution -- 4. Use of Cupric Sulfate -- 5. Use of Ferricyanide -- 6. Use of Iodate -- 7. Use of Lead Oxide -- 8. Use of Mercuric Chloride -- References -- CHAPTER 3. COLORIMETRIC AND SPECTROPHOTOMETRIC METHODS -- 1. Determination of Isonicotinic Acid Hydrazide (INH) -- 2. Determination of Maleic Hydrazide -- 3. Determination of Hydrazine -- 4. Determination of Hydrazine and Benzylhydrazine -- 5. Determination of 1,1-Dimethylhydrazine (UDMH) -- 6. Determination of Monomethylhydrazine -- References -- CHAPTER 4. CHROMATOGRAPHIC METHODS -- 1. Ion Exchange Chromatography -- 2. Paper Chromatography. , 3. Thin Layer Chromatography -- References -- CHAPTER 5. COULOMETRIC METHODS -- 1. Determination of Hydrazine and Substituted Hydrazines -- References -- CHAPTER 6. POLAROGRAPHIC METHODS -- 1. Determination of Hydrazine, Phenylhydrazine, and Semicarbazide -- 2. Determination of Isonicotinic Acid Hydrazide -- 3. Determination of p,p-Oxybis (Benzenesulfonyl) Hydrazide -- References -- CHAPTER 7. ACID-BASE METHODS -- 1. Aqueous Methods -- 2. Non-aqueous Methods -- References -- CHAPTER 8. THE ANALYSIS OF MIXTURES -- 1. Hydrazine-l,l-Dimethylhydrazine Mixtures -- 2. Hydrazine-Monomethylhydrazine Mixtures -- 3. Hydrazine-1,1-Dimethylhydrazine and Monomethylhydrazine-1,1-Dimethylhydrazine Mixtures -- 4. Hydrazine-Monomethylhydrazine-I,I- Dimethylhydrazine Mixtures -- 5. Hydrazine-Aniline Mixtures -- 6. Hydrazine-Ammonia Mixtures -- 7. Hydrazine-Ammoida-Hydrogen-Nitrogen-Argon Mixtures -- 8. Hydrazine-Hydroxylamine Mixtures -- 9. Hydrazine-Ammonium Hydroxide-Hydroxylamine Mixtures -- 10. Hydrazine-Hydrazine Nitrate Mixtures -- 11. Determination of Diethylenetriamine (DETA) with either Hydrazine, Monomethylhydrazine, or 1,1-Dimethylhydrazine -- References -- CHAPTER 9. OTHER QUALITATIVE AND QUANTITATIVE TESTS -- 1. Spot Tests -- 2. Microbiological Tests -- 3. Field Tests -- References -- CHAPTER 10. THE USE OF HYDRAZINES AS ANALYTICAL REAGENTS -- 1. Use of 1,1-Dimethylhydrazine -- 2. Use of 2,4-Dinitrophenylhydrazine -- 3. Use of 1,5-Diphenylcarbazide -- 4. Use of Hydrazine -- 5. Use of 2-Hydrazinobenzothiazole -- 6. Use of Isonicotinic Acid Hydrazide -- 7. Use of Oxalyldihydrazide -- 8. Use of Phenylhydrazine -- 9. Use of Salicyloylhydrazide -- 10. Use of Semicarbazide -- References -- AUTHOR INDEX -- SUBJECT INDEX -- OTHER TITLES IN THE SERIES IN ORGANIC FUNCTIONAL GROUP ANALYSIS.
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  • 7
    Publication Date: 2018-02-06
    Description: Digital hydrographic data combined with satellite thermal infrared and visible band remote sensing provide a synoptic climatological view of the shallow planktonic environment. This paper uses wind, hydrographic, and ocean remote sensing data to examine southwest monsoon controls on the foraminiferal faunal composition of Recent seafloor sediments of the northwestern Arabian Sea. Ekman pumping resulting in open-ocean upwelling and coastal upwelling create two distinctly different mixed layer plankton environments in the northwestern Arabian Sea during the summer monsoon. Open-sea upwelling to the northwest of the mean July position of the Findlater Jet axis yields a mixed layer environment with temperatures of less than 25°C to about 26.5°C, phytoplankton pigment concentrations between 1.5 and 5.0 mg/m³, and mixed layer depths less than 50 m. Convergence in the Ekman layer in the central Arabian Sea drives the formation of a mixed layer that is greater than 50 m thick, warmer than about 26.5°C, and has phytoplankton pigment concentrations generally below 2.0 mg/m³. Coastal upwelling creates an extremely eutrophic plankton environment that persists over and immediately adjacent to the Omani shelf and undergoes significant offshore transport only within topographically induced coastal squirts. The foraminiferal faunal composition of upper Pleistocene deep-sea sediments of the northwestern Arabian Sea are mainly controlled by vertical nutrient fluxes caused by Ekman pumping, not coastal upwelling. Transfer functions for late Pleistocene mixed layer depth, temperature, and chlorophyll have been obtained through factor analysis and nonlinear multiple regression between late summer mixed layer environment and Recent sediment faunal observations.
    Type: Article , PeerReviewed
    Format: text
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  • 8
    Publication Date: 2013-09-14
    Description: Numerous Gram-negative bacterial pathogens use type III secretion systems to deliver effector molecules into the cytoplasm of a host cell. Many of these effectors have evolved to manipulate the host ubiquitin system to alter host cell physiology or the location, stability, or function of the effector itself. ExoU is a potent A2 phospholipase used by Pseudomonas aeruginosa to destroy membranes of infected cells. The enzyme is held in an inactive state inside of the bacterium due to the absence of a required eukaryotic activator, which was recently identified as ubiquitin. This study sought to identify the region of ExoU required to mediate this interaction and determine the properties of ubiquitin important for binding, ExoU activation, or both. Biochemical and biophysical approaches were used to map the ubiquitin-binding domain to a C-terminal four-helix bundle of ExoU. The hydrophobic patch of ubiquitin is required for full binding affinity and activation. Binding and activation were uncoupled by introducing an L8R substitution in ubiquitin. Purified L8R demonstrated a parental binding phenotype to ExoU but did not activate the phospholipase in vitro. Utilizing these new biochemical data and intermolecular distance measurements by double electron-electron resonance, we propose a model for an ExoU-monoubiquitin complex.
    Print ISSN: 0021-9258
    Electronic ISSN: 1083-351X
    Topics: Biology , Chemistry and Pharmacology
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  • 9
    Publication Date: 2012-10-13
    Description: The homeobox transcription factor Mohawk (Mkx) is a potent transcriptional repressor expressed in the embryonic precursors of skeletal muscle, cartilage, and bone. MKX has recently been shown to be a critical regulator of musculoskeletal tissue differentiation and gene expression; however, the genetic pathways through which MKX functions and its DNA-binding properties are currently unknown. Using a modified bacterial one-hybrid site selection assay, we determined the core DNA-recognition motif of the mouse monomeric Mkx homeodomain to be A-C-A. Using cell-based assays, we have identified a minimal Mkx-responsive element (MRE) located within the Mkx promoter, which is composed of a highly conserved inverted repeat of the core Mkx recognition motif. Using the minimal MRE sequence, we have further identified conserved MREs within the locus of Sox6, a transcription factor that represses slow fiber gene expression during skeletal muscle differentiation. Real-time PCR and immunostaining of in vitro differentiated muscle satellite cells isolated from Mkx-null mice revealed an increase in the expression of Sox6 and down-regulation of slow fiber structural genes. Together, these data identify the unique DNA-recognition properties of MKX and reveal a novel role for Mkx in promoting slow fiber type specification during skeletal muscle differentiation.
    Print ISSN: 0021-9258
    Electronic ISSN: 1083-351X
    Topics: Biology , Chemistry and Pharmacology
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