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
Filter
  • Articles  (38)
  • Springer  (38)
  • 1975-1979  (26)
  • 1940-1944  (12)
Collection
  • Articles  (38)
Source
Keywords
Publisher
Years
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Coherent elastic energies of exsolution boundaries in peristerite and böggild intergrowths (1979)
    Springer
    Physics and chemistry of minerals 4 (1979), S. 115-127 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract Elastic energy calculations based upon the coherent model of Willaime and Brown [Acta Cryst. A30, 316–331 (1974)] have been carried out for some exsolution textures in peristerite and Böggild intergrowths. For peristerites it is demonstrated that substitution of K for Na moves the orientation of the exsolution lamellae from (08 $$\overline {\text{1}} $$ ) to about ( $$\overline {\text{1}} $$ , 21, $$\overline {\text{2}} $$ ) in agreement with observations. An electron microscope study of exsolution textures in labradorite and andesine plagioclases has been carried out and information about small structural differences in these lamellar structures has been obtained from elastic energy calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307556
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    An electron microscopic study of some twinning and exsolution textures in microcline amazonites (1977)
    Springer
    Physics and chemistry of minerals 1 (1977), S. 313-324 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract An electron microscopic study of the twinning and exsolution textures in one hydrothermal and two pegmatitic amazonites from southern Norway is reported. From observations of three types of interfaces: between twins, between domains twinned on different laws and between Na- and K-feldspar domains, perthitic textures involving low albite lenses up to 10 μm long in a twinned microcline matrix are shown to result from exsolution from the triclinic phase. Complex twinning on albite and pericline laws is suggested to be the result of strains induced by exsolution. Other textures, involving the late introduction of Na at low temperature in a pegmatite and the occurrence of Pb-rich and plagioclase crystallites in a hydrothermal amazonite, are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307570
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Bilateral surgical removal of impacted lower third molar teeth as a model for drug evaluation: A test with ibuprofen (1975)
    Springer
    European journal of clinical pharmacology 8 (1975), S. 209-216 
    Details
    ISSN: 1432-1041
    Keywords: Anti-inflammatory effects ; oedema measurements ; ibuprofen ; oral surgery ; double-blind trial
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary It was considered that double-blind crossover studies of therapeutic efficacy after acute injury could well be done in patients who required surgical removal of impacted wisdom teeth from both sides of the lower jaw. In the present trial 24 healthy patients received either placebo or ibuprofen (Brufen®: 400 mg three times daily), a non-steroidal anti-inflammatory agent, for 5 days commencing the day before surgery. Treatments were given on the two occasions when impacted wisdom teeth were to be removed from one side or other of the lower jaw. A number of objective and subjective parameters were recorded for paired comparison of the post-operative courses, including swelling, trismus and pain. A mechanical device which allows simple and accurate measurement of cheek swelling is described. On the 1st, 3rd and 5th post-operative days in the ibuprofen group the measured swelling averaged 93, 89 and 82%, respectively, of that in the placebo group; the corresponding α-values were 0.35, 0.06 and 0.07. Patients with less swelling after ibuprofen were not always those with a high serum concentration of the drug. Ibuprofen significantly reduced pain on the day of the operation. This may at least partly account for less trismus and the preference of the patients for their post-operative courses with ibuprofen. Examination of various haematological parameters did not reveal any significant difference between the two operations. Subjective scores indicated that neither wound-healing nor bleeding was affected by ibuprofen, nor were any side effects detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00567117
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Study of peristerites using transmission electron microscopy and energy dispersive X-ray analysis (1975)
    Springer
    Contributions to mineralogy and petrology 51 (1975), S. 297-302 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Peristerite feldspars from Seiland in Norway have been studied by a combination of transmission electron microscopy and energy dispersive X-ray analysis. The different types of microtextures have been correlated with the local mean composition, and it is found that the miscibility gap between An4 and An17 extends into the ternary Or—Ab—An region. The orientation of the more common type of exsolution lamellae varies from (08¯1) to about (¯1, 21, ¯2) with increasing potassium content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00372147
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Ab initio studies on several species of the formula X3YO and X3YOH (1978)
    Springer
    Theoretical chemistry accounts 47 (1978), S. 39-50 
    Details
    ISSN: 1432-2234
    Keywords: Electronic structure of X3YO type compounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Ab initio molecular orbital calculations using both minimal and extended basis sets have been applied to two isoelectronic sets of molecules. One set corresponds to the 18 electron species H3NO, H3CO− and H3COH while the second set contains the 42 electron fluorinated molecules F3NO, F3CO− and F3COH. The geometries of these molecules have been optimized, using both the minimal STO-3G and the extended 4-31G basis sets. These comparative calculations reveal that the 4-31G basis produced structural parameters in much better agreement with experiment. The effect of includingd-orbitals in the basis set was also investigated. For the fluorinated oxides it has been found that the optimized 4-31G structures were only slightly altered by the addition ofd-orbitals. For H3NO, on the other hand, the inclusion ofd-orbitals considerably shortens the N-O bond distance. Both H3NO and CF3OH, which are unknown experimentally, are theoretically predicted to be capable of existence. The electronic structures of these molecules have also been examined using electronic partitioning according to the Mulliken scheme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00554695
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The apparent Dingle temperature in Zn−Mn, Zn−Cr, and Zn−Fe (1975)
    Springer
    The European physical journal 19 (1975), S. 277-284 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The apparent Dingle temperature of the 3rd zone needles in several alloys of Zn−Mn, Zn−Cr and Zn−Fe has been determined from the absolute amplitude of the de Haas-van Alphen effect over the temperature range 1.6 K to 4.2 K and the field range 0 to 9 kG. The results show clearly that potential scatteringnot spin scattering dominates in all three systems. In addition, a “cross-over” behaviour in the de Haas-van Alphen amplitudes results from the scattering of the magnetic moments of the impurity spin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01458875
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Infrared spectral properties of atmospheric molecules (1976)
    Springer
    Optical and quantum electronics 8 (1976), S. 191-194 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619445
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    The physical-chemical limnology of a desert reservoir (1977)
    Springer
    Hydrobiologia 53 (1977), S. 117-129 
    Details
    ISSN: 1573-5117
    Keywords: limnology ; desert reservoir ; water chemistry ; phytoplankton ; nutrients ; trace elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The physical-chemical limnology of a desert lake in central Arizona was investigated from February 1971–July 1973. The reservoir was found to be a warm-monomictic, eutrophic lake which exhibited pronounced thermal stratification during the summer months. Surface water temperatures ranged from a minimum of ca. 9 C in January to a maximum near 30 C in July–August. Chemically the lake may be described as a hard water lake of moderately high alkalinity and salinity. The concentration of the principal ions was affected significantly by precipitation run-off. The primary nutrients N and P were subject to considerable seasonal variability, being influenced most by precipitation and phytoplankton abundance. Trace element concentrations were low and showed comparatively little fluctuation during the study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00029290
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Characterizing soil fertility by ion diffusive flux measurements (1977)
    Springer
    Plant and soil 47 (1977), S. 663-678 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The general acceptance of diffusion as a rate-limiting step in transferring ions to plant roots was considered in characterizing soil fertility. Soil ion diffusive flux measurements to an exchange resin were measured with two soil: resin cells, one with untreated soil, the other with the same soil fertilized with P, K, and Cl. The P, K, and Cl that diffused to the resin of each cell was extracted and determined. Using only these measurements and some simplifying assumptions of diffusion theory, calculations were made of the soil's P and K solution concentration, adsorbed concentration, a capacity factor, transmission factor, and quantity of fertilizer needed to attain any desired flux. Excellent to fair correlations existed between these calculated values and traditionally measured chemical quantities. Plant uptake of P and K was generally well correlated with diffusive flux measurements as well as traditional chemical measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011035
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Growth kinetics and morphologies of iron silicide layers (1978)
    Springer
    Journal of materials science 13 (1978), S. 2157-2163 
    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 The production of iron silicide layers by the vapour deposition of silicon on to iron has been studied over the temperature range 800 to 1200° C. Silicon was deposited from silicon tetrachloride by either a combination of hydrogen reduction and replacement reaction with the iron substrate or by the replacement reaction alone. In the combined process, at temperatures in the range 800 to 1100° C, the deposition occurs by at least 75% hydrogen reduction. At temperatures above 1100° C the rate of the replacement reaction increases more rapidly than that of the hydrogen reduction process, and so the replacement reaction accounts for more than 25% of the overall depostion. The growth morphologies of the layers have been studied as a function of deposition temperature by scanning electron microscopy. The morphologies obtained in the combined process are shown to agree with general predictions based on the effects of gas phase supersaturation on vapour growth morphologies. The deposits produced by replacement alone are shown to vary from having a vapour-etched crystalline morphology to having a flat porous morphology as the deposition temperature is increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00541669
    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...