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  • 1
    Electronic Resource
    Electronic Resource
    Ethnic influence on uterine activity in spontaneous normal labour (1989)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 96 (1989), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Uterine activity in spontaneous normal labour was studied in Singaporean Malay women at term with a singleton vertex presentation. Nulliparae had significantly higher uterine activity compared with their multiparous counterparts. Uterine activity in the Malay population was compared with that of a similar Chinese population. When controlled for parity, maternal height and birthweight of babies, there was no difference in uterine activity between the two groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1989.tb03197.x
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  • 2
    Electronic Resource
    Electronic Resource
    Crystal structure and absolute configuration of (+)-methadone hydrobromide (1989)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1469-1471 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270189005780
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  • 3
    Electronic Resource
    Electronic Resource
    Non-similar solutions of free convection flow over a vertical frustum of a cone for constant wall temperature (1989)
    Springer
    Archive of applied mechanics 59 (1989), S. 382-389 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Untersucht wird die laminare freie Konvektionsströmung und der Wärmeübergang an einem vertikalen Kegelstumpf. Zur Lösung der zugehörigen Grenzschichtgleichungen im Fall konstanter Wandtemperatur werden die Modelle der lokalen Ähnlichkeit und der lokalen Nichtähnlichkeit mit zwei bzw. drei Gleichungen eingeführt und die sich ergebenden Gleichungen numerisch gelöst. Die Lösungen nach den Modellen mit zwei und drei Gleichungen passen gut zusammen. Die Zahlenwerte von Strom- und Temperaturfunktionen, die für die Berechnung der Wandschubspannung und der Wärmeübergangsrate benötigt werden, sind für verschiedene Werte der Prandtl-Zahl angegeben.
    Notes: Summary The laminar free convection flow and heat transfer over a vertical frustum of a cone is studied. The governing boundary layer equations are solved using local non-similarity method for constant wall temperature case. Local similarity and the local non-similarity two- and three-equation models are constructed and the resulting equations are solved numerically. Results obtained from two- and three-equation models are in good agreement. The numerical values of the flow and temperature functions required to calculate the surface skin friction and heat transfer rate have been reported for various values of Prandtl numbers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00534068
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  • 4
    Electronic Resource
    Electronic Resource
    Structure of 8-azaadenosine hydrochloride (1989)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1586-1589 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270189002817
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  • 5
    Electronic Resource
    Electronic Resource
    Oscillatory free convection heat transfer along a semi-infinite vertical plate (1989)
    Springer
    Archive of applied mechanics 59 (1989), S. 1-16 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Betrachtet wird die fluktuierende freie Konvektionsströmung längs einer halbunendlichen senkrechten Platte, deren Temperatur dem Gesetz T p −T ∞=(T 0−T ∞) [1+ɛ sin {ie1-03}] folgt, wobei 0 ≦ ɛ 〈 1 gelte, {ie1-04} die Frequenz ist und der Temperatur-Mittelwert T 0−T ∞ proportional zu χ n (0 ≦ n 〈 1) ist. Mit Hilfe zweier asymptotischer Entwicklungen werden die Strömungs- und Temperaturfelder gewonnen. Für kleine Werte des Frequenzparameters ω wird eine gewöhnliche Entwicklung benutzt, für große ω die Methode angepaßter asymptotischer Entwicklungen. Es stellt sich heraus, daß die Oberflächenreibung und die Wärmeübergangsrate aus zwei Entwicklungen für ein bestimmtes ω zufriedenstellend aufeinander fallen. Für n=1 werden die Grundgleichungen zueinander ähnlich und werden nach der Finite-Differenzen-Methode gelöst. Die Ergebnisse nach den Reihenentwicklungen und der Finite-Differenzen-Methode stimmen gut überein.
    Notes: Summary The fluctuating free convection flow along a semi-infinite vertical plate is considered when the plate temperature is of the form T p −T ∞ =(T 0 −T ∞ ) $$[1 + \varepsilon \sin (\bar \omega \bar t)]$$ where 0 ≦ ɛ 〈 1, $$\bar \omega $$ denotes the frequency of oscillation and the mean temperature T 0−T ∞ is proportional to χ n (0 ≦ n 〈 1). Flow and temperature fields have been obtained by means of two asymptotic expansions. For small values of the frequency parameter ω, a regular expansion is obtained while for large ω the method of matched asymptotic expansion is used. It is found that the skin friction and the rate of heat transfer obtained from two expansions overlap satisfactorily for a certain value of ω. For n=1 the flow governing equations to a semisimilar form, and have been solved by finite difference method. The results obtained from the series and the finite difference methods are in good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00536627
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  • 6
    Electronic Resource
    Electronic Resource
    An analysis of spectrophotometric observations of comets Austin (1982g) and Bradfield (1980t) (1989)
    Springer
    Earth, moon and planets 47 (1989), S. 231-239 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Post-perihelion observed emission fluxes at 388 nm (CN) and 516 nm (C2) of the coma of comets Austin (1982g) and Bradfield (1980t) are analysed in the framework of the Haser model. Ratios of Haser model CN and C2 parent production rates with expansion velocity show that each comet behaves normally. For comet Austin (1982g), the Q CN/v and Q c2/v values decrease with increase of heliocentric distance of comet. For an assumed %; activity of the total spherical surface area of the nucleus, the water vaporization theory coupled with derived water production rates from the International Ultraviolet Explorer H and OH flux data yields a nuclear diameter of about 6 km for comet Austin (1982g). For comet Bradfield (1980t), the derived nuclear diameter is expected to be of about 1 km. In each comet, the dust mass production rates as well as ratio of dust-to-gas mass production rates decrease with increase of heliocentric distance of comet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00114102
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  • 7
    Electronic Resource
    Electronic Resource
    Haser model CN, C2 and C3 production rates in some comets (1989)
    Springer
    Earth, moon and planets 47 (1989), S. 15-31 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Emission fluxes of CN, C2 and C3 species observed in the coma of some comets are analysed in the framework of Haser model. CN, C2 and C3 production rates are determined using recently derived fluorescence efficiencies and dependence of CN, C2 and C3 production rates on the heliocentric distance is studied. Evidence for a burst type activity around January 15, 1974 in the post-perihelion period of comet Kohoutek (1973f) is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00056328
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  • 8
    Electronic Resource
    Electronic Resource
    The response of rice to the growth and nitrogen fixation inAzolla caroliniana andAzolla pinnata at varying rates of phosphate fertilization (1989)
    Springer
    Plant and soil 114 (1989), S. 205-209 
    Details
    ISSN: 1573-5036
    Keywords: Azolla caroliniana ; Azolla pinnata ; nitrogen fixation ; Oryza sativa ; phosphate fertilizer ; rice yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The response of rice toAzolla caroliniana, newly introduced in India, was compared with the reponse to the local isolate ofAzolla pinnata at varying rates of phosphate fertilizer (4.4–8.8 kg P ha−1) during a wet and a dry season. Fresh weight, dry weight and fixed N were more for both species 21 DAI (days after inoculation) than 14 DAI, but acetylene reduction activity (ARA) was higher 14 DAI than 21 DAI. Dry weight of Azolla and fixed N were less 14 DAI forA. caroliniana than forA. pinnata during the wet season. Twenty-one DAI, fresh weight ofA. caroliniana was 62.1 and 27.6% higher than that ofA. pinnata during the wet and dry season, respectively. However, dry weight and fixed N were more 21 DAI inA. caroliniana than inA. pinnata during only the wet season. The ARA was higher inA. caroliniana both 14 and 21 DAI, irrespective of season. The presence of either species in the rice field increased grain yield, straw yield, number of panicles m−2, number of grains per panicle and reduced percentage sterility during both the wet and the dry season. Phosphate application significantly increased fresh weight, dry weight, ARA and fixed N for both species as well as grain and straw yields of rice. The responses to phosphate fertilizer were similar for both Azolla species and for rice grown with either one of the Azolla species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02220799
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  • 9
    Electronic Resource
    Electronic Resource
    Rice yields as influenced by Azolla N2 fixation and urea N-fertilization (1989)
    Springer
    Plant and soil 114 (1989), S. 63-68 
    Details
    ISSN: 1573-5036
    Keywords: Azolla pinnata ; Nitrogen fixation ; N yield ; Oryza sativa ; Urea-N
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Application of 0, 30, 60, 90 and 120 kg N ha−1 of urea (U) in split doses with (and without)Azolla pinnata, R. Brown was studied for three consecutive seasons under planted field condition. Fresh weight (FW), acetylene reduction activity (ARA) and N yield of Azolla were found to be maximum 14 days after inoculation (DAI). Among the different treatments, maximum Azolla growth was recorded in no N control. The FW, ARA and N yield of Azolla were inhibited increasingly with the increase in N levels. Irrespective of season, FW and N yield of Azolla were inhibited only a small extent with 90 kg N ha−1 U, beyond which the inhibition was pronounced. ARA was inhibited only slightly up to 60 kg N ha−1 of U. Grain yield and crop N uptake of rice increased significantly up to 90 kg N ha−1 of U (alone or in combination with Azolla) in the dry seasons (variety IR 36) and up to 60 kg N ha−1 U in the wet season (variety CR 1018).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02203082
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  • 10
    Electronic Resource
    Electronic Resource
    Natural convection flow over a vertical frustum of a cone for constant wall heat flux (1989)
    Springer
    Flow, turbulence and combustion 46 (1989), S. 335-345 
    Details
    ISSN: 1573-1987
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Laminar natural convection flow and heat transfer over a vertical frustum of a cone has been studied. The governing boundary layer equations are solved using local non-similarity method for constant wall heat flux. The local similarity and the local non-similarity two and three-equation models are constructed and the resulting equations are solved numerically. Results obtained from two and three-equation models are in good agreement. The numerical values of the flow and temperature functions required to calculate the surface skin friction and heat transfer rate are reported for various values of Prandtl numbers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01998550
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