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  • Inorganic Chemistry  (7)
  • 15N  (4)
  • Anthropoidea  (2)
  • Aqua ammonia  (2)
  • 1
    Electronic Resource
    Electronic Resource
    The discovery ofMoeripithecus markgrafi Schlosser (Propliopithecidae, Anthropoidea, Primates), in the Ashawq Formation (Early Oligocene of Dhofar Province, Sultanate of Oman)
    Amsterdam : Elsevier
    Journal of Human Evolution 20 (1991), S. 33-49 
    Details
    ISSN: 0047-2484
    Keywords: Anthropoidea ; Moeripithecus ; Oligocene ; Primates ; Propliopithecidae ; Sultanate of Oman
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0047-2484(91)90044-V
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  • 2
    Electronic Resource
    Electronic Resource
    Mineralization of soil organic nitrogen solubilized by aqua ammonia fertilizer (1996)
    Springer
    Biology and fertility of soils 23 (1996), S. 93-98 
    Details
    ISSN: 1432-0789
    Keywords: Added nitrogen interaction ; Alkaline-hydrolysing fertilizer ; Aqua ammonia ; Gross N immobilization ; Gross N mineralization ; 15N ; Soluble organic N availability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Organic N solubilized by NH3(aq) was extracted from 15N-labelled or unlabelled soil, concentrated and added to non-extracted soil, which was incubated under aerobic conditions at 27±1°C. Gross N mineralization, gross N immobilization, and nitrification in soils with or without addition of unlabelled soluble organic N were estimated by models based on the dilution of the NH 4 + or NO inf3 sup- pools, which were labelled with 15N at the beginning of incubation. Mineralization of labelled organic N was measured by the appearance of label in the mineral N pool. Although gross N mineralization and gross N immobilization were increased in two soils between day 0 and day 7 following addition of unlabelled organic N solubilized by NH3(aq), there was no increase in net N mineralization. Solubilization of 15N-labelled organic N increased and the 15N enrichment of the soluble organic N decereased as the concentration of NH3(aq) added increased. A constant proportion of approximately one-quarter of the labelled organic N added at different rates to non-extracted soil was recovered in the mineral N pool after an incubation period of 14 days, and the availability ratios calculated from net N mineralization data were 1.1:1 and 2.1:1 for 111 and 186 mg added organic-N kg-1 soil, respectively, indicating that the mineralization of organic N was increased by solubilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335824
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  • 3
    Electronic Resource
    Electronic Resource
    Biological interactions between soil nitrogen and alkaline-hydrolysing nitrogen fertilizers (1995)
    Springer
    Biology and fertility of soils 20 (1995), S. 41-48 
    Details
    ISSN: 1432-0789
    Keywords: Added nitrogen interaction ; Ammonia fixation ; 15N ; Immobilization ; Fertilizer-induced solubilization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Added N interactions were measured in four soil incubated with 15N-labelled urea or diammonium phosphate. The use of biologically active, γ-irradiated, or reinoculated γ-irradiated samples allowed us to separate added N interactions due to chemical and biological processes, and to distinguish real interactions from apparent effects. Real biologically mediated added N interactions were observed in one soil for both fertilizer sources and in three soils amended with urea. These real interactions increased with the N fertilizer rate, but did not differ significantly between N sources. Fertilizer-induced unlabelled organic N in soil extracts declined during incubation in both sterile and non-sterile samples, but the temporal decline was higher in biologically active soil. Changes in fertilizer-induced unlabelled organic N in the extracts of three soils attributed to biological processes were similar to the measured real biologically mediated added N interactions. The results are consistent with the hypothesis that real biologically mediated added N interactions arise from the mineralization of soil organic N solubilized by alkaline-hydrolysing N fertilizers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307839
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  • 4
    Electronic Resource
    Electronic Resource
    The discovery ofMoeripithecus markgrafi Schlosser (Propliopithecidae, Anthropoidea, Primates), in the Ashawq Formation (Early Oligocene of Dhofar Province, Sultanate of Oman)
    Amsterdam : Elsevier
    Journal of Human Evolution 20 (1991), S. 33-49 
    Details
    ISSN: 0047-2484
    Keywords: Anthropoidea ; Moeripithecus ; Oligocene ; Primates ; Propliopithecidae ; Sultanate of Oman
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0047-2484(91)90044-V
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Mineralization of soil organic nitrogen solubilized by aqua ammonia fertilizer (1996)
    Springer
    Biology and fertility of soils 23 (1996), S. 93-98 
    Details
    ISSN: 1432-0789
    Keywords: Key words Added nitrogen interaction ; Alkaline-hydrolysing fertilizer ; Aqua ammonia ; Gross N immobilization ; Gross N mineralization ; 15N ; Soluble organic N availability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Organic N solubilized by NH3(aq) was extracted from 15N-labelled or unlabelled soil, concentrated and added to non-extracted soil, which was incubated under aerobic conditions at 27±1°C. Gross N mineralization, gross N immobilization, and nitrification in soils with or without addition of unlabelled soluble organic N were estimated by models based on the dilution of the NH4 + or NO3 – pools, which were labelled with 15N at the beginning of incubation. Mineralization of labelled organic N was measured by the appearance of label in the mineral N pool. Although gross N mineralization and gross N immobilization were increased in two soils between day 0 and day 7 following addition of unlabelled organic N solubilized by NH3(aq), there was no increase in net N mineralization. Solubilization of 15N-labelled organic N increased and the 15N enrichment of the soluble organic N decereased as the concentration of NH3(aq) added increased. A constant proportion of approximately one-quarter of the labelled organic N added at different rates to non-extracted soil was recovered in the mineral N pool after an incubation period of 14 days, and the availability ratios calculated from net N mineralization data were 1.1:1 and 2.1:1 for 111 and 186 mg added organic-N kg–1 soil, respectively, indicating that the mineralization of organic N was increased by solubilization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335824
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  • 6
    Electronic Resource
    Electronic Resource
    Solubilization of soil organic N by alkaline-hydrolysing N fertilizers (1994)
    Springer
    Nutrient cycling in agroecosystems 38 (1994), S. 131-139 
    Details
    ISSN: 1573-0867
    Keywords: aqua ammonia ; di-ammonium phosphate ; gamma-irradiated soil ; 15N ; organic matter solubility ; urea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Interactions between15N-labelled fertilizers applied at concentrations representative of the fertilizer microsite and the solubility of the nitrogenous component of soil organic matter were investigated in laboratory experiments. Soil organic N was solubilized in aγ-irradiated soil due to addition of NH3(aq), and the fertilizer-induced loss of unlabelled total N in the extracted soil (ΔTUs) increased with increasing N fertilizer concentration and soil pH. ΔTUs was linearly correlated with ammoniacal-N concentration and the pH of the fertilized soil within the range of 7.5-10 (r = 0.94). Total organic N in the soil extract (OTe) increased rapidly up to day 14 following addition of 2000 mg urea-N kg−1 soil, but was then stable up to day 28. OTe of a range of soils increased from between 5 and 148 to between 15 and 368 mg N kg−1 soil after application of 1045 mg NH3-N kg−1 soil. While up to 25% of the organic N was solubilized by the fertilizer in nine soils, the change in total organic N in the extracts (ΔOTe) of three soils was not significant. The highest ΔOTe of 399 mg N kg−1 soil (35.4% of soil organic N) was measured after application of 2000 mg NH3-N kg−1 soil. pH and ΔOTe decreased in the order of NH3(aq) 〉 urea 〉 di-ammonium phosphate 〉 ammonium sulphate at equivalent rates of N addition. A negative ΔOTe was measured following application of ammonium sulphate. ΔOTe was correlated with the pH of the fertilized soil but not ammoniacal-N concentration for different N fertilizer sources.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00748773
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  • 7
    Electronic Resource
    Electronic Resource
    Acetylacetone complexes of tetravalent molybdenum (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 570 (1989), S. 159-166 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Acetylacetonat-Komplexe des vierwertigen MolybdänsEinige neue Komplexe des vierwertigen Molybdäns mit Acetylaceton werden dargestellt, wobei sich zwei Reihen von Komplexen mit unterschiedlichen koordinativen Bindungen für Acetylaceton ergeben. Alle Verbindungen werden durch Elementaranalyse, spektroskopische Daten, magnetische und Leitfähigkeits-Messungen charakterisiert.
    Notes: Some new complexes of tetravalent molybdenum containing acetylacetone have been synthesized by the reaction of acetylacetone with hydrated molybdenum(IV) oxide. Two series of complexes having varied coordination linkages for acetylacetone have been isolated under appropriate conditions. All the compounds were characterized through their elemental analyses, spectral data, magnetic moment and conductance measurement.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19895700117
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  • 8
    Electronic Resource
    Electronic Resource
    Nitrosyl rhenium complexes: Syntheses, properties, and structures of acetylacetonato derivatives (1987)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 548 (1987), S. 217-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosyl-Rhenium-Komplexe: Darstellung, Eigenschaften und Struktur von Acetylacetonato-DerivatenEinige neue Rhenium-Komplexe, wie [Re(NO)(acac)2(Cl)H2O] und Re(NO)(acac)3(acacH)(H2O)2 wurden durch Umsatz von Re(NO)Cl3 · H2O bzw. Re(NO)(OH)3 · H2O mit Acetylaceton dargestellt. Ferner wird die Darstellung von [Re(NO)(py)(acac)2(Cl) · H2O], [Re(NO)(acac)(OH)(Cl) · H2O], [Re2(NO)2(acacH)3(acac)2 · Cl4], [Re(NO)(acac)2(OH) · H2O] · 2 H2O angegeben. Die Komplexe werden durch Elementaranalyse, spektroskopische, magnetische und Leitfähigkeitsdaten charakterisiert.
    Notes: Some new complexes of rhenium containing monocoordinating acetylacetone viz. [Re(NO)(acac)2(Cl)H2O], Re(NO)(acac)3(acacH)(H2O)2 have been synthesized by reacting acetylacetone with either Re(NO)Cl3 · H2O or Re(NO)(OH)3 · H2O. The preparation of [Re(NO)(py)(acac)2(Cl) · H2O], [Re(NO)(acac)(OH)(Cl) · H2O], [Re2(NO)2(acacH)3(acac)2 · Cl4], [Re(NO)(acac)2(OH) · H2O] · 2 H2O have also been described. These complexes were characterized through their elemental analyses, u.v., vis, i.r., 1Hn.m.r., magnetic, and conductance data.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19875480524
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  • 9
    Electronic Resource
    Electronic Resource
    Cyanogen Complexes of Rhenium. IV (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 340 (1965), S. 82-85 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Durch Umsetzung von Aquopenta-cyanorhenaten(II) mit Alkalicyaniden wurden die hexacyanoferrat(II)-analogen Salze K4[ReII(CN)6] · 3 H2O und Na4[ReII(CN)6] · 5 H2O gewonnen, die diamagnetisch und aus deren wäßrigen Lösungen die entsprechenden schwerlöslichen Cu(II)- und Co(II)-Salze auszufällen sind.
    Notes: Preparation of K4ReII(CN)6 · 3 H2O and Na4ReII(CN)6 · 5 H2O analogous to hexacyanoferrates(II) are described. They have been prepared by the treatment of corresponding aquopentacyano-rhenates(II) with alkali cyanides. The insoluble copper and cobalt salts have also been prepared. The hexacyanorhenates(II) are diamagnetic at room temperature.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653400110
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  • 10
    Electronic Resource
    Electronic Resource
    Preparation of some nickel(II) and copper(II) complexes of the SCHIFF-Base derived from Acetophenone and Ethylenediamine (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 389 (1972), S. 215-219 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Es wird über Herstellung und Eigenschaften von NiII- und CuII-Komplexen mit der SCHIFFschen Base „BAPE“ aus Acetophenon und Äthylendiamin sowie über gemischte BAPE/Acetylaceton-Komplexe berichtet (Formeln I-V s. Abstract). BAPE wirkt dabei als zweizähniger Neutralligand. Die Komplexe wurden durch Elementaranalyse, Elektronenspektrum sowie durch magnetische und Leitfähigkeitsmessungen charakterisiert. Für MII(BAPE)Cl2 wird pseudotetraedrische, für [MII(BAPE)(acac)(H2O)2] ClO4 tetragonale Struktur abgeleitet (MII = Ni, Cu). Der Komplex [Ni(BAPE)(acac)]ClO4 erwies sich als quadratisch-planar.
    Notes: Preparation and properties of the following NiII and CuII complexes of the Schiff base derived from acetophenone and ethylenediamine (BAPE) and also of the mixed NiII and CuII chelates with BAPE and acetylacetone (acac-H) are described: In each case the Schiff base, BAPE, acts as a neutral bidentate ligand. The complexes are characterised by electronic spectra, magnetic susceptibilities, conductivities and elemental analyses. Pseudotetrahedral structure is proposed for M(BAPE)C12, while tetragonal structure for [M(BAPE)(acac)(H2O)2]ClO4 (M = Ni and Cu). The complex [Ni(BAPE) (acac)]ClO4 has been found to be square planar.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723890213
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