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  • 1
    Electronic Resource
    Electronic Resource
    Organic photovoltaic cells. Correlations between cell performance and molecular structure (1984)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 88 (1984), S. 923-933 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150649a019
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  • 2
    Electronic Resource
    Electronic Resource
    Temperature dependence of Auger lifetime in heavily doped Hg1−xCdxTe (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 6642-6644 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An expression for Auger lifetime as a function of temperature has been derived for a heavily doped Hg1−xCdxTe in the presence of a nonparabolicity of band structure, band gap narrowing, and carrier degeneracy. It is utilized to study the variation of Auger lifetime with temperature through numerical analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355106
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  • 3
    Electronic Resource
    Electronic Resource
    Some analyses of potential profiles of forward-biased high-low junctions (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 2496-2501 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A model calculation for the variation of the normalized potential against the normalized position for a forward-biased, below 2 thermal voltage, high-low junction has been made through numerical computations of Poisson's equation. The model is oriented to a junction with a sufficiently large doping difference between the two sides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357022
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  • 4
    Electronic Resource
    Electronic Resource
    Prognostic significance of raised serum α-fetoprotein levels in twin pregnancies (1982)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 89 (1982), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary. Maternal serum α-fetoprotein (AFP) was measured during the second trimester in 219 twin pregnancies uncomplicated by neural-tube defects (NTD) and in 11 twin pregnancies discordant for NTD. Serum AFP levels were recorded in multiples of the median value (MOM) calculated from normal singleton pregnancies. Of the twin pregnancies uncomplicated by NTD 49% had AFP levels 〈2·5 MOM, 7·8% had levels 〉5 MOM and 59% of these were associated with either abortion, stillbirth or fetus papyraceous. In twin pregnancies with serum AFP levels 〈5 MOM an unsuccessful outcome was noted in only 4% (χ2, P〈0·05). There was a significant negative correlation between serum AFP levels and combined birthweights (r=0·954). All 11 pregnancies discordant for NTD had serum AFP values 〉5 MOM and this level appears to be a suitable cut-off point above which there should be further diagnostic investigations and monitoring of fetal well-being.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1982.tb05032.x
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  • 5
    Electronic Resource
    Electronic Resource
    Intra-operative blood loss during elective lower segment caesarean section (1992)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 99 (1992), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective To measure intra-operative blood loss at elective lower segment caesarean section and to compare estimated wtih measured blood loss.Design Prospective observational study. Blood loss was measured in patients who underwent lower segment caesarean section in the course of routine hospital activity.Setting Tsan Yuk Hospital (Hong Kong), which is affiliated to the University of Hong Kong, 1990–1991.Subjects Forty women (mean age 29 years) with singleton pregnancies (mean gestation 38 weeks) delivered by elective lower segment caesarean section under general anaesthesia (mean birthweight 3177 g).Main outcome measure Intra-operative blood loss measured by the alkaline haematin method (intra-assay co-efficient of Variation 2.2%).Results The mean measured blood loss was 487 ml (SE 40, range 164–1438). The mean estimated blood loss was 425 ml (SE 31) range 100–1300; mode 400). Observer error in estimating blood loss was higher if measured blood loss 〉600 ml. One patient received a blood transfusion and another had a post-operative haemoglobin level 〈10.0g/dl.Conclusion Blood loss at elective lower segment caesarean section was usually 〈500 ml and was estimated with reasonable accuracy. However, there was a tendency to under-estimate blood loss when the measured loss exceeded 600 ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1992.tb13749.x
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  • 6
    Electronic Resource
    Electronic Resource
    Semiconducting properties of sol-gel derived vanadium silicate glasses (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 855-856 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Preparation of semiconducting vanadium silicate glasses by the sol-gel route and the results of electrical measurements are reported for the first time. The temperature dependence of the electrical conductivity has been analyzed in terms of small polaron as well as percolation models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105258
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  • 7
    Electronic Resource
    Electronic Resource
    Transport mechanism in semiconducting glassy silicon vanadates (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 3961-3965 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Measurements are reported for the electrical conductivity of the semiconducting glassy silicon vanadates in the temperature range 80–400 K. The experimental results have been analyzed with reference to the existing theoretical models of hopping conduction. The analysis shows that at high temperatures the conductivity data are consistent with Mott's model [J. Non-Cryst. Solids 1, 1 (1968)] of phonon-assisted polaronic hopping, while Mott's variable range hopping model [Philos. Mag. 19, 835 (1969)] is valid at low temperatures. The small polaron model of Schnakenberg [Phys. Status Solidi 28, 623 (1968)] is also found to be consistent with the temperature dependence of the conductivity. The temperature dependence of the conductivity can also be interpreted in the framework of the percolation model proposed by Triberis and Friedman [J. Phys. C 18, 2281 (1985)]. The analysis of the conductivity data also indicates that the hopping in these vanadate glasses occurs in the nonadiabatic regime.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354464
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  • 8
    Electronic Resource
    Electronic Resource
    A cytokinin complex from the developing fruits of Aegle marmelos (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 59 (1983), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Following ion-exchange, Sephadex LH-20 and paper chromatography of the methanolic extracts of young, developing fruits of Aegle marmelos Correa, cytokinin-like activity in the soybean callus assay was detected in six fractions. Of the four butanol-soluble compounds, two were tentatively identified as zeatin and zeatin riboside, and the others as zeatin glucoside and zeatin riboside glucoside. The major cytokinino of the butanol-insoluble fraction is probably zeatin nucleotide. The levels of compounds with cytokinin-like activity were high during the early phase, and low in the subsequent period of fruit growth. The activity resembling that of cytokinin glucoside increased with maturation of the fruit. The content of free cytokinins in the fruits was more than that released from the tRNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1983.tb00752.x
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  • 9
    Electronic Resource
    Electronic Resource
    Rheological study of black coal-oil suspensions (1984)
    Springer
    Rheologica acta 23 (1984), S. 195-206 
    Details
    ISSN: 1435-1528
    Keywords: Black coal ; oil ; suspension ; ageing ; power-law model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract The rheological study of coal-oil suspensions is very important because of their application in many industries as alternative fuels to petroleum oil. In this work, the flow behaviour of black coal-oil suspension was studied for a range of coal volume fractions from 0.0378 to 0.427. Shear stresses were measured for shear rates up to 200 s−1 using a Weissenberg Rheogoniometer. All the suspensions behaved like non-Newtonian liquids and exhibited significant increases in apparent viscosity on storage. The flow behaviour of both freshly prepared and aged suspensions was able to be described by power-law models. A model similar to that given by Chong was used to establish relation between the relative apparent viscosity and coal volume fraction for freshly prepared as well as all aged suspensions. A correlation was also established between ageing time and maximum coal volume fraction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01332075
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  • 10
    Electronic Resource
    Electronic Resource
    The role of Cosmic rays in hydrostatic equilibrium of the galactic halo (1983)
    Springer
    Astrophysics and space science 92 (1983), S. 37-44 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The hydrostatic equilibrium of the gas field system is studied in the halo. Cosmic-ray distribution is considered independently from the magnetic field on the basis of the diffusion model of the propagation of cosmic rays. We show that the cosmic rays extend in the halo to distances of a few kiloparsecs. The magnetic field decreases slowly with height above the galactic plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653586
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