Library

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
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 96 (1989), S. 0 
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1586-1589 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1469-1471 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 59 (1989), S. 1-16 
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Archive of applied mechanics 59 (1989), S. 382-389 
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Earth, moon and planets 47 (1989), S. 15-31 
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Advances in contraception 5 (1989), S. 91-99 
    ISSN: 1573-7195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Resunré Les implants conrraceptifs NorplantR-2 consistent en deux éléments de Silastic dans lesquels on a incorporé du lévonorgestrel dans le polymère. L'étude poursuivie décrit notre expérience de deux années à Singapour, avec 100 femmes qui ont accepté le traitement aux implants NorplantR-2. Aucune grossesse nla été enregistrée pendant les deux premières années dlutillsation. Bendant cotte période, 86,4% des retraits ont été dus à la planification d'une grossesse ou à des irrégularités du eyele menstruel. Le taux de poursuite à la fin des deux ann'ees s'élevait à 78%. Le taux de conception chez les femmes ayant planifié une grossesse était de 54,5% à la fin de la première année. Malgré cette lenteur apparente du retour à la fécondité, qu'il y aura lieu de surveiller de près, il semble que les éléments NorplantR-2 offrent une méthode de contraception extrêmement efficace et commode.
    Abstract: Resumen Los implantes anficonceptivos NorplantR-2 constan de dos elementos de Silastie on los guales se ha incorporado levonorgestrel en el polimero. Este estudio, que continúa, deseribe nuestra experlengia de dos aros en Singapur, con 100 mujeres que habían aecptado implantes NorplantR-2. No se registrô ningún embarazo durante los primeros dos años de empleo. Durante este período, el 86,4% de los retiros se debió al deseo de un embarazo planificado o a la perturbación del ritmo menstrual. La tasa de continuación al eabo de dos aõs fue del 78%. La tasa de concepción tras el retiro del implante en las mujeres que deseaban un embarazo planificado fue del 54,5% al eabo de un año. Aparte de esta lentitud aparente en el retorno a la fecundidad, que será necesario vigilar de cerea, los elementos NorplantR-2 ofrecen, al parecer, un método anticonceptivo sumamente eficaz y cómodo.
    Notes: Abstract NorplantR-2 contraceptive implants consist of two Silastic rods in which levonorgestrel has been incorporated with the polymer. This on-going study describes our two-year experience with 100 acceptors of NorplantR-2 rods in Singapore. No pregnancies occurred during the first two years of use. Desire for planned pregnancy and menstrual irregularities accounted for 86.4% of the removals during this period. The continuation rate at the end of two years was 78%. The post-removal conception rate in women desiring planned pregnancy was 54.5% at the end of one year. Apart from this apparent slow return of fertility requiring future close surveillance, it appears that the NorplantR-2 rod system offers a highly effective and convenient means of contraception.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Advances in contraception 5 (1989), S. 13-21 
    ISSN: 1573-7195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Resumé Les implants contraceptifs Norplant sont des implants Silastic contenant du lévonorgestrel. Cette étude résume nos deux années d'expérience relative à 100 femmes de Singapour qui avaient accepté d'utiliser des implants Norplant. Aucune grossesse n'a été signalée au cours des deux premières années d'utilisation. Vingt implants ont été retirés au cours de cette période, essentiellement pour deux raisons: le désir d'une grossesse planifiée et le dérèglement du cycle menstruel. Le taux de poursuite à la fin de ces deux années s'élevait à 79%. Le pourcentage de grossesses après le retrait chez les femmes désirant une maternité planifiée a atteint 90% à la fin de la première année. Il semble donc que le méthode Norplant offre un mode de contraception extrêmement efficace, acceptable, réversible et sans danger.
    Abstract: Resumen Los implantes anticonceptivos Norplant son implantes Silastic que contienen levonorgestrel. En este estudio se describe nuestra experiencia de dos años con 100 mujeres de Singapur que habían aceptado implantes Norplant. No se registraron embarazos durante los primeros dos años de empleo. El deseo de un embarazo planificado y la perturbación del ritmo menstrual fueron las dos razones principales por las cuales se retiraron veinte implantes en el curso de dicho período. La tasa de continuación al cabo de dos años fue del 79%. La tasa de concepción tras el retiro del implante en las mujeres que deseaban en embarazo planificado fue del 90% al cabo de un año. En consecuencia, parece que el sistema Norplant ofrece un método anticonceptivo de gran eficacia, aceptable, reversible y sin peligro.
    Notes: Abstract Norplant contraceptive implants are Silastic containing levonorgestrel implants. This study describes our two-year experience with 100 acceptors of Norplant implants in Singapore. No pregnancies occurred during the first two years of use. Desire for planned pregnancy and disruption of menstrual rhythm were the two main reasons for twenty implant removals during the two years. The continuation rate at the end of two years was 79%. The post-removal conception rate in women desiring pregnancy was 90% at the end of one year. It thus appears that the Norplant contraceptive system offers a highly effective, acceptable, reversible and safe method of contraception.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 114 (1989), S. 63-68 
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...