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  • 112-679D; 112-680B; 112-681B; 112-686B; DRILL; Drilling/drill rig; Joides Resolution; Leg112; Ocean Drilling Program; ODP; South Pacific Ocean  (1)
  • DNA probes  (1)
  • ELECTRONIC COMPONENTS AND CIRCUITS  (1)
Collection
Keywords
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  • 1
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    Unknown
    Biochemical, geochemical and sedimentological study of ODP Leg 112 samples (1990)
    PANGAEA
    In:  Supplement to: Patience, R L; Clayton, C J; Kearsley, A T; Rowland, Steve J; Bishop, A N; Rees, A W G; Bibby, K G; Hopper, A C (1990): An integrated biochemical, geochemical, and sedimentological study of organic diagenesis in sediments from Leg 112. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 135-153, https://doi.org/10.2973/odp.proc.sr.112.191.1990
    Details
    Publication Date: 2024-01-09
    Description: Organic-rich diatomaceous muds from Ocean Drilling Program Leg 112 (offshore Peru) are the subject of a comprehensive organic diagenetic study covering the burial interval, 〈1 to 〉100 m. The organic matter has been classified in terms of its elemental, biochemical, and geochemical compositions. About 60% of the organic carbon in sediments from 〈1 m can be attributed to hydrolyzable, biochemical constituents, while at 22 m this figure decreased to 20%. Pyrolysis-gas chromatography and gas chromatography-mass spectrometry chromatograms of these same sediments contain mainly hydrocarbons and nitrogenous compounds, with low amounts of other heteroatomic compounds, even though the total organic matter is rich in oxygen (about 35 atoms per 100 carbon atoms) and sulfur (1 to 5 atoms per 100 C atoms). Overall, the organic matter in these sediments, even at these shallow depths and young ages, has many of the geochemical features of far more deeply buried sediments, providing further strong evidence for the claim that "kerogen-formation" is a very early diagenetic process.
    Keywords: 112-679D; 112-680B; 112-681B; 112-686B; DRILL; Drilling/drill rig; Joides Resolution; Leg112; Ocean Drilling Program; ODP; South Pacific Ocean
    Type: Dataset
    Format: application/zip, 8 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
    Electronic Resource
    Electronic Resource
    Development of DNA probes for cytotoxin and enterotoxin genes in enteric bacteria (1988)
    Springer
    Cellular and molecular life sciences 44 (1988), S. 848-853 
    Details
    ISSN: 1420-9071
    Keywords: DNA probes ; cytotoxin and enterotoxin genes ; Escherichia coli ; Shigella spp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary DNA probes to identify the genes encoding toxins in enteric bacteria have been developed. Use of these probes reduces the number of animals required for toxicity testing, as suspect bacteria can be directly tested for the presence of toxin. We have augmented the gene probes available by developing probes against theEscherichia coli enterotoxin LTII and shiga toxin fromShigella dysenteriae 1. The LTII gene fromE. coli 357900 was identified and characterised and a suitable internal probe was obtained. The LTII gene was found not to be common among enterobacteriae from various geographical locations. Isolates predominately of animal origin from Nigeria and Thailand hybridized with the probe. The shiga toxin gene was isolated fromS. dysenteriae 1 by a combination of in vivo and in vitro methods. An internal probe was identified and used against different serogroups ofShigella andE. coli isolated. The probe was found to hybridize withS. dysenteriae 1 isolates and also someS. flexneri andS. sonnei strains. Representatives were tested for toxin production and found to produce toxin at low levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01941182
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Unknown
    Sequential Polarity-Reversing Circuit (1994)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Proposed circuit reverses polarity of electric power supplied to bidirectional dc motor, reversible electro-mechanical actuator, or other device operating in direction depending on polarity. Circuit reverses polarity each time power turned on, without need for additional polarity-reversing or direction signals and circuitry to process them.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: NPO-18629 , NASA Tech Briefs (ISSN 0145-319X); 18; 11; P. 42
    Format: text
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    NASA TECHNICAL REPORTS
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