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  • Wiley-Blackwell  (5)
  • Singapore : Springer Nature Singapore  (1)
  • 2020-2024  (1)
  • 1985-1989  (5)
  • 1965-1969
  • 1
    Online Resource
    Online Resource
    Reactive Oxygen Species : Prospects in Plant Metabolism (2023)
    Singapore : Springer Nature Singapore | Singapore : Imprint: Springer
    Details Availability
    Keywords: Stress (Physiology). ; Plants. ; Plant physiology. ; Botanical chemistry. ; Metabolism, Secondary.
    Description / Table of Contents: Chapter 1:An Update on Reactive Oxygen Species Synthesis and its Potential Application -- Chapter 2 :Mechanism of Reactive Oxygen Species Regulation in Plants -- Chapter 3: Biomolecules Targeted by Reactive Oxygen Species -- Chapter 4: Functions of Reactive Oxygen Species in Improving Agriculture and Future Crop Safety -- Chapter 5: The Ecology of Reactive Oxygen Species Signaling -- Chapter 6: Physiological Impact of Reactive Oxygen Species on Leaf -- Chapter 7: Reactive Oxygen Species: Role in Senescence and Signal Transduction -- Chapter 8: Hazardous Phytotoxic Nature of Reactive Oxygen Species in Agriculture -- Chapter 9: Hormonal Response in Plants Influenced by Reactive Oxygen Species -- Chapter 10: The Dual Role of Reactive Oxygen Species as Signals that Influence Plant Stress Tolerance and Programmed Cell Death -- Chapter 11: ight into the Interaction of Strigolactones, Abscisic Acid, and Reactive Oxygen Species Signals -- Chapter 12: 12. Hydrogen Peroxide: Regulator of Plant Development and Abiotic Stress Response -- Chapter 13:Towards Sustainable Agriculture: Strategies Involving Phyto-Protectants against Reactive Oxygen Species -- chapter 14:Signaling Pathway of Reactive Oxygen Species in Crop Plants under Abiotic Stress -- Chapter 15: Adverse Impact of ROS on Nutrient Accumulation and Distribution in Plants.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(XIII, 295 p. 1 illus.)
    Edition: 1st ed. 2023.
    ISBN: 9789811997945
    URL: https://doi.org/10.1007/978-981-19-9794-5
    DOI: 10.1007/978-981-19-9794-5
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Emulsion polymerization of methyl methacrylate in presence of egyptian delta titano magnetite ore using different initiators (1985)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 132 (1985), S. 43-51 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Emulsionspolymerisation von Methylmethacrylat wurde entweder emulgatorfrei durchgeführt und mit NaHSO3 initiiert oder mit Dodecylbenzolnatriumsulfonat als Emulgator und mit Natriumpersulfat oder Kaliumpersulfat bei unterschiedlichen Temperaturen initiiert. Die Polymerisation wurde in wäßrigem Medium ausgeführt in An- und Abwesenheit von ägyptischem Delta Titan-Magneteisenerz (Schwarzsand). Bei Zugabe geringer Anteile dieses Schwarzsandes zeigte sich ein Ansteigen der Anfangsgeschwindigkeit der Polymerisation mit zunehmendem Anteil des Erzes. Höhere Anteile des Erzes ergaben eine Abnahme der Geschwindigkeit. Wurde die Reaktion mit Natriumbisulfit initiiert, zeigte sich ein Anstieg der Polymerisationsgeschwindigkeit mit zunehmendem Anteil an Schwarzsand. In Gegenwart von 0.1 g Erz (auf 50 ml Ansatz) nahm die scheinbare Aktivierungsenergie Ea von 14.2 kcal/mol ohne Erzzusatz auf 9.9 kcal/mol ab, wenn die Polymerisation mit Natriumbisulfit initiiert war, von 40.2 auf 36.6 kcal/mol bei Verwendung von Natnumpersulfat und von 30.2 auf 24.4 kcal/mol bei Zugabe von Kaliumpersulfat. Die erhaltenen mittleren Molekulargewichte stiegen mit zunehmendem Anteil des Schwarzsandes an.
    Notes: The emulsion polymerization of methyl methacrylate was carried out either emulsifier free initiated with NaHSO3 or with dodecylbenzene sodium sulphonate or potassium persulphate at different temperatures. The polymerization was carried out in aqueous media in absence and in presence of Egyptian Delta titano magnetite ore (EDTMO) (black sand). When small amounts of the ore were added the initial rate of polymerization was found to increase with the increase of the amount of ore. Larger amounts of the ore resulted in a decrease of the rate. When the reaction was initiated with sodium bisulfite the rate of polymerization was found to increase with the increase of EDTMO. In presence of 0.1 g/50 cm3 (reaction mixture) of the ore, the apparent activation energy Ea was found to decrease from 14.2 without EDTMO to 9.9 kcal/mol when the polymerization was initiated with sodium persulphate, and from 30.2 to 24.4 kcal/mol when initiated with potassium persulphate. The obtained average molecular weights were found to increase with the increase of EDTMO.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1985.051320103
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  • 3
    Electronic Resource
    Electronic Resource
    Direct Synthesis of Pyrazoles via reaction of C-ethoxycarbonyl-N-arylnitrilimines with benzalmalononitriles and some α-cyanocinnamic acid derivatives (1988)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 330 (1988), S. 558-562 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction of C-ethoxycarbonyl-N-arylnitrilimines (2a-d) with α, β-disubstituted acrylonitriles (3a-f) in refluxing benzene affords the corresponding substituted pyrazoles 5a-f and 6a-c respectively in good yield. However, reaction of 2a-e with 3g gives the 2-pyrazoline derivatives 7a-d. The assigned structures for the products 5-7 were confirmed by their spectra (i.r., 1H-n.m.r.) and elemental analyses. Also the structures of the pyrazoles 5 were substantiated by comparison with their regioisomeres 8.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19883300409
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  • 4
    Electronic Resource
    Electronic Resource
    Pseudochalkogenverbindungen. XXProfessor Lothar Kolditz zum 60. Geburtstage gewidmet. Pseudochalkogenolyse-Reaktionen an Hexachlorocyclotriphosphazen (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 576 (1989), S. 197-202 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pseudochalkogeno Compounds. XX. Pseudochalkogenolysis Reactions with HexachlorocyclotriphosphazeneReactions of hexachlorocyclotriphosphazene, P3N3Cl6, with cyanamide, NH2CN, in the presence of triethylamine as well as with sodium malondinitrile, NaCH(CN)2, are described, which are leading to mixed chloro hydrogenpseudochalkogeno cyclotriphosphazenes of the types P3N3Cl4(YH)2 and P3N3Cl2(YH)4 (Y : NCN, C(CN)2). The new compounds are characterized on the basis of their n.m.r. and i.r. spectra; possible tautomerie equilibria are discussed.
    Notes: Es werden Pseudochalkogenolyse-Reaktionen von Hexachlorocyclotriphosphazen, P3N3Cl6, beschrieben, die bei Umsetzungen mit Cyanamid, NH2CN, in Gegenwart von Triethylamin oder mit Natrium-malondinitril, NaCH(CN)2 zu gemischten Chloro-hydropseudochalkogeno-cyclotriphosphazenen der Typen P3N3Cl4(YH)2 und P3N3Cl2(YH)4 (Y:NCN, C(CN)2) führen. Die neuen Verbindungen werden anhand ihrer NMR- und IR-Spektren charakterisiert; mögliche Tautomerie-Gleichgewichte werden diskutiert.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895760122
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  • 5
    Electronic Resource
    Electronic Resource
    The explosive reaction of carbon monoxide and oxygen at 973 and 1048 K (1986)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 18 (1986), S. 801-817 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Conditions leading to an explosive reaction of carbon monoxide and oxygen in the presence of small amounts of water have been examined at temperatures of 973 and 1048 K. Carbon monoxide and water were formed in the presence of oxygen by reaction with a thin film of carbon deposited on a quartz vessel. The carbon provided a reactive and reproducible surface, giving aconsistent rate of termination and thus allowing a quantitative descriptionof the conditions at the explosion in the region of the first limit. Calculations of the rates of the various branching and termination reactions at the onset of the explosion showed that the simple mechanism described earlier was still adequate to explain the reaction at temperatures up to 1050 K. From experiments with inert gases the transition from the first explosion limit to the region of the second explosion limit was demonstrated.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550180707
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  • 6
    Electronic Resource
    Electronic Resource
    Kinetics and mechanism of the explosive reaction of carbon monoxide and oxygen (1986)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 18 (1986), S. 181-202 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new technique is described for quantitative measurement of the conditions of reactant concentration at ignition in mixtures of carbon monoxide and oxygen. A thin film of carbon covering the surface of a quartz reaction vessel reacted with oxygen to form carbon monoxide and small quantities of water. Explosions were observed above 900 K over the pressure range 15-100 torr with ratios of CO/O2 far below those hitherto explored. The onset of explosion was favored by the addition of hydrogen, methane, and water and was inhibited by the addition of inert gases. A simple mechanism predicts the occurrence of an explosion over a wide range of product composition and total pressure.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550180205
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