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  • Capillary water  (1)
  • Carboxylic acids -- Analysis.  (1)
  • Keywords: Alteromonas organophosphorus acid anhydrolase gene; X-Pro dipeptidase; sequencing and functional homology to prolidase  (1)
  • 1
    Online-Ressource
    Online-Ressource
    The Determination of Carboxylic Functional Groups : Monographs in Organic Functional Group Analysis. (1970)
    San Diego :Elsevier Science & Technology,
    Details
    Schlagwort(e): Carboxylic acids -- Analysis. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (141 pages)
    Ausgabe: 1st ed.
    ISBN: 9781483151250
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=1822066
    Sprache: Englisch
    Anmerkung: 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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  • 2
    Digitale Medien
    Digitale Medien
    The analysis of water in the Martian regolith (1979)
    Springer
    Journal of molecular evolution 14 (1979), S. 33-38 
    Details
    ISSN: 1432-1432
    Schlagwort(e): Water ; Mars ; Adsorbed water ; Capillary water ; Mineral hydrates-hygroscopic minerals ; Endolithic organisms
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary One of the scientific objectives of the Viking Mission to Mars was to accomplish an analysis of water in the Martian regolith. The analytical scheme originally envisioned was severly compromised in the latter stages of the Lander instrument package design. Nevertheless, a crude soil water analysis was accomplished. Samples from each of the two widely separated sites yielded roughly 1 to 3% water by weight when heated successively to several temperatures up to 500°C. A significant portion of this water was released in the 200° to 350°C interval indicating the presence of mineral hydrates of relatively low thermal stability, a finding in keeping with the low temperatures generally prevailing on Mars. The presence of a duricrust at one of the Lander sites is taken as possible evidence for the presence of hygroscopic minerals on Mars. The demonstrated presence of atmospheric water vapor and thermodynamic calculations lead to the belief that adsorbed water could provide a relatively favorable environment for endolithic organisms on Mars similar to types recently discovered in the dry antarctic deserts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01732365
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  • 3
    Digitale Medien
    Digitale Medien
    Nucleotide sequence of a gene encoding an organophosphorus nerve agent degrading enzyme from Alteromonas haloplanktis (1997)
    Springer
    Journal of industrial microbiology and biotechnology 18 (1997), S. 49-55 
    Details
    ISSN: 1476-5535
    Schlagwort(e): Keywords: Alteromonas organophosphorus acid anhydrolase gene; X-Pro dipeptidase; sequencing and functional homology to prolidase
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Organophosphorus acid anhydrolases (OPAA) catalyzing the hydrolysis of a variety of toxic organophosphorus cholinesterase inhibitors offer potential for decontamination of G-type nerve agents and pesticides. The gene (opa) encoding an OPAA was cloned from the chromosomal DNA of Alteromonas haloplanktis ATCC 23821. The nucleotide sequence of the 1.7-kb DNA fragment contained the opa gene (1.3 kb) and its flanking region. We report structural and functional similarity of OPAAs from A. haloplanktis and Alteromonas sp JD6.5 with the enzyme prolidase that hydrolyzes dipeptides with a prolyl residue in the carboxyl-terminal position. These results corroborate the earlier conclusion that the OPAA is a type of X-Pro dipeptidase, and that X-Pro could be the native substrate for such an enzyme in Alteromonas cells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/sj.jim.2900358
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