ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
  • 1
    Electronic Resource
    Electronic Resource
    .pi.-Cation radicals of copper(II) derivatives of short chain basket handle porphyrins (1994)
    s.l. : American Chemical Society
    Inorganic chemistry 33 (1994), S. 392-394 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00080a032
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Critical Zn concentration for essential oil yield and menthol concentration of Japanese mint (1991)
    Springer
    Nutrient cycling in agroecosystems 29 (1991), S. 261-265 
    Details
    ISSN: 1573-0867
    Keywords: Mentha arvensis ; essential oil ; menthol ; critical zinc concentration ; nutrient solution ; Japanese mint
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The effect of different concentrations of Zn nutrient application on Japanese mint (Mentha arvensis L.) was studied under glasshouse conditions. Zn application stimulated the dry matter production, essential oil concentration and menthol concentration of Japanese mint. Zn supplies of 0.05µg ml−1 were required for maximum responses in dry matter yield and oil concentration. Significantly positive interrelationships were observed among fresh herb yield, dry matter yield and menthol concentration in the oil. Graphical analyses of Cate and Nelson model indicated the critical Zn concentration in leaves to be 28µg g−1 on a dry matter basis and in the solution culture 0.0475µg ml−1 on the basis of Zn concentration in leaves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01052394
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Morphological and molecular characterization of Frankia sp. isolates from nodules of Alnus nepalensis Don (1994)
    Springer
    Archives of microbiology 161 (1994), S. 152-155 
    Details
    ISSN: 1432-072X
    Keywords: Frankia sp. ; Alnus nepalensis ; SEM ; PCR ; Nucleotide sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Nodules collected from Alnus nepalensis growing in mixed forest stands at three different sites around Shillong, were crushed in various culture media to obtain isolates of Frankia. The isolates were found to have typical Frankia morphology as revealed by the scanning electron microscope. Seedlings inoculated with isolates or crushed nodules formed nitrogen fixing nodules. Frankia specific DNA probes amplified the DNA of the tested isolate AnpUS4. Partial nucleotide sequence of the 16S rRNA gene indicated that AnpUS4 was phylogenetically distinct from all other Frankia strains characterized so far.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276476
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Morphological and molecular characterization of Frankia sp. isolates from nodules of Alnus nepalensis Don. (1994)
    Springer
    Archives of microbiology 161 (1994), S. 152-155 
    Details
    ISSN: 1432-072X
    Keywords: Key words:Frankia sp. –Alnus nepalensis– SEM – PCR – Nucleotide sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. Nodules collected from Alnus nepalensis growing in mixed forest stands at three different sites around Shillong, were crushed in various culture media to obtain isolates of Frankia. The isolates were found to have typical Frankia morphology as revealed by the scanning electron microscope. Seedlings inoculated with isolates or crushed nodules formed nitrogen fixing nodules. Frankia specific DNA probes amplified the DNA of the tested isolate AnpUS4. Partial nucleotide sequence of the 16S rRNA gene indicated that AnpUS4 was phylogenetically distinct from all other Frankia strains characterized so far.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276476
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Thermochemical analysis of chemical processes relevant to the stability and processing of SiC-reinforced Si3N4 composites (1991)
    Springer
    Journal of materials science 26 (1991), S. 6591-6598 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Chemical processes relevant to the stability and processing of SiC-reinforced Si3N4 composites are examined from a thermochemical point of view. The thermodynamic stability of various interfaces, such as SiC-Si3N4, SiC-Si3N4-Si2ON2, and SiC-Si3N4-SiO2, is examined as a function of temperature. The temperatures above which these interfaces become unstable are calculated, and the degradation of SiC during the processing of the composite is examined. The processing routes considered in this study include the reaction-bonded silicon nitride process, as well as pressure-assisted sintering processes in the presence of suitable sintering additives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553682
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Effect of the triacontanol formulation ‘Miraculan’ on photosynthesis, growth, nutrient uptake, and essential oil yield of Lemongrass (Cymbopogon flexuosus) Steud. Watts (1991)
    Springer
    Plant growth regulation 10 (1991), S. 57-63 
    Details
    ISSN: 1573-5087
    Keywords: Plant growth regulators ; micro-nutrient ; Transpiration ; CO2 exchange ; chlorophyll ; essential oils ; Lemongrass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The influence of different foliar applications of the triacontanol (Tria.) based plant grow regulator-‘Miraculan’, on growth, CO2 exchange and essential oil accumulation in Lemongrass (Cymbopogon flexuosus L.) Steud. Watts. was studied in glass-house conditions. The yield components, viz., plant height, tillers per plant, biomass yield, accumulation of essential oil, net CO2 exchange and transpiration rates increased with ‘Miraculan’ treatment of 0.4 μg/ml compared to the untreated control, but the number of leaves per tiller remained unaffected. Application of Miraculan at 0.4 μg/ml increased micronutrient uptake, total chlorophyll and citral content but decreased chlorophyll a/b ratio and stomatal resistance. Increase in shoot biomass, photosynthesis and chlorophyll were significantly correlated with essential oil content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035131
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Thermochemical analysis of chemical processes relevant to the stability and processing of SiC-reinforced Si3N4 composites (1991)
    Springer
    Journal of materials science 26 (1991), S. 6591-6598 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Chemical processes relevant to the stability and processing of SiC-reinforced Si3N4 composites are examined from a thermochemical point of view. The thermodynamic stability of various interfaces, such as SiC-Si3N4, SiC-Si3N4-Si2ON2, and SiC-Si3N4-SiO2, is examined as a function of temperature. The temperatures above which these interfaces become unstable are calculated, and the degradation of SiC during the processing of the composite is examined. The processing routes considered in this study include the reaction-bonded silicon nitride process, as well as pressure-assisted sintering processes in the presence of suitable sintering additives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02402650
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Rheological properties of a liquid crystalline copolyester (1990)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 30 (1990), S. 124-128 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Rheological studies of an experimental liquid crystalline (LC) copolyester were carried out using a capillary rheometer and a cone and plate rheometer. Rheological characteristics of the polymer in the nematic state were observed. The nematic melt was found to be pseudoplastic and the degree of pseudoplasticity varied with shear rate. Melt viscosity was found to decrease with shear rate. Negative die swelling was observed at the exit of the capillary rheometer at temperatures marginally above the solid-nematic transition temperature of the polymer and was also found to be a function of shear rate. The dynamic mechanical properties of the polymer were studied as a function of temperature. The activation energies of flow and of dynamic mechanical deformation were calculated.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760300209
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Morphological studies on the blends of poly(butylene terephthalate) and bisphenol-A polycarbonate (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 39 (1990), S. 1251-1264 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The morphology of the blends of poly(butylene terephthalate) (PBT) and bisphenol-A polycarbonate (PC) crystallized from the melt were studied by density measurement and small angle light scattering techniques. Rate of crystallization of these blends was found to be slower with increasing amount of PC. The Avrami exponent n for the blends was calculated and related to the shape of superstructures formed. Hv and Vv scattering patterns as seen by small angle light scattering were analyzed to determine the nature, shape, and size of the superstructures. The changes in the superstructure formation with increasing amount of PC in these blends have been analyzed.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1990.070390604
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Poly(butylene terephthalate)/high density polyethylene alloys. II. Mechanical properties and rheology (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 45 (1992), S. 1837-1847 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Alloys of poly(butylene terephthalate) (PBT) and high density polyethylene (HDPE) in 80 : 20 ratio were prepared using a polyethylene-based ionomer as a compatibilizer. The effect of the addition of this compatibilizer on mechanical and rheological properties of the PBT/HDPE blends was examined. The mechanical properties studied were tensile, flexural, and impact properties as a function of ionomer content. Ultimate mechanical properties showed significant improvement on addition of ionomer. This has been attributed to an increase in the interfacial adhesion between the two phases in the presence of the compatibilizer. Rheological measurements showed that shear viscosity increased for the blend with the addition of the compatibilizer. An explanation for this behavior is presented on the basis of the theory of emulsions.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1992.070451018
    Location Call Number Expected 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...