Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Hydroxylamine denitration  (2)
  • (Sm"1"-"xNd"x)"2Fe"1"4Ga"3C"2 compounds  (1)
  • 13C-NMR  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Structure and magnetic properties of (Sm"1"-"xNd"x)"2Fe"1"4Ga"3C"2 (x = 0-0.5) compounds prepared by arc-melting
    Amsterdam : Elsevier
    Solid State Communications 92 (1994), S. 309-312 
    Details
    ISSN: 0038-1098
    Keywords: (Sm"1"-"xNd"x)"2Fe"1"4Ga"3C"2 compounds ; Magnetic properties. ; Structure
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(94)90707-2
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Carbon mineralization in soils of different textures as affected by water-soluble organic carbon extracted from composted dairy manure (1996)
    Springer
    Biology and fertility of soils 21 (1996), S. 10-16 
    Details
    ISSN: 1432-0789
    Keywords: Carbon mineralization ; Water-soluble organic carbon ; Texture ; Microbial biomass carbon ; 13C-NMR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The water-soluble organic C in composted manure contains a portion of labile C which can stimulate soil microbial activity. The objective of this experiment was to evaluate the effects of water-soluble organic C extracted from composted dairy manure on C mineralization in soil with different textures. Three soils with textures varying from 3 to 54% clay were amended with 0 to 80 mg water-soluble organic C kg−1 soil extracted from a composted dairy manure and incubated for 16 weeks at 23°C. The total amount of C mineralized was greater than the amount of C added in the three soils. Differences in mineralizable C with and without added water-soluble organic C were approximately 13–16 times, 4.8–8 times, and 7.5–8 times greater than the amount of C added to clay, loam, and sand soils, respectively. The results of this experiment suggest that immediately following composted manure applications, C mineralization rates increase, and that most of the C mineralized comes mainly from the indigenous soil organic C pool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335987
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Assignment of the 1H, 13C and 15N resonances in cyclodextrin nitrates by 2D NMR and the determination of the regioselectivity of the hydroxylamine-induced denitration reactions (1991)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 1018-1023 
    Details
    ISSN: 0749-1581
    Keywords: α-Cyclodextrin nitrate ; β-Cyclodextrin nitrate ; Hydroxylamine denitration ; 15N—O—C—1H shift correlations ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hexakis(2,3,6-tri-O-nitro)-α-cyclodextrin and heptakis(2,3,6-tri-O-nitro)-β-cyclodextrin were prepared and the complete assignment of the 1H, 13C and 15N resonance signals in each case was achieved using homonuclear shift correlation experiments, one-bond 13C—1H and three-bond 15N—O—C—1H heteronuclear shift correlation measurements. The denitration of these cyclodextrin nitrates by hydroxylamine in pyridine was investigated to study its selectivity in preparing partially nitrated derivatives of these cyclodextrins. The sites of denitration were determined in each case using 13C and 15N NMR and the products were completely characterized. The results indicate that denitration of these cyclodextrin nitrates is a highly regiospecific reaction occurring at the 2-position only and giving rise to hexakis(3,6-di-O-nitro)-α-cyclodextrin and heptakis(3,6-di-O-nitro)-β-cyclodextrin, respectively.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260291008
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    An NMR study of the hydroxylamine-induced denitration of nitrocellulose, nitroamylose and some model monosaccharide nitrate esters (1991)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 168-177 
    Details
    ISSN: 0749-1581
    Keywords: Trinitrocellulose ; Trinitroamylose ; Monosaccharide nitrates ; Hydroxylamine denitration ; 15N—O—C—1H shift correlations ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The previously known method of partial denitration of trinitrocellulose by hydroxylamine in pyridine was further investigated by NMR and applied to trinitroamylose and several other monosaccharide nitrates to study its selectivity. The sites of denitration were determined in each case using 13C and 15N NMR and, in most cases, by 2D homo- and hetero-nuclear (15N—O—C—1H and 13C—1H) chemical shift correlations. The results indicate that denitration of the polysaccharide nitrates is a highly regiospecific reaction occurring at the 2-position only, whereas with the monosaccharide nitrates denitration takes place with less selectivity, at the 4-position predominantly, and to a lesser extent at the 3-position.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260290214
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...