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  • 1
    Book
    Book
    Network flow programming (1990)
    Malabar, Florida :Krieger,
    Details
    Title: Network flow programming
    Author: Jensen, Paul A.
    Contributer: Barnes, J. Wesley
    Publisher: Malabar, Florida :Krieger,
    Year of publication: 1990
    Pages: 408 S.
    Type of Medium: Book
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  • 2
    Electronic Resource
    Electronic Resource
    Identification and Characterisation of 5-Hydroxytryptamine3 Recognition Sites in Human Brain Tissue (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 53 (1989), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: [3H]Zacopride displayed regional saturable specific binding to homogenates of human brain tissues, as defined by the inclusion of BRL43694 [endo-N-(9-methyl-9-azabicyclo[3.3.1]non-3-yl)-l-methylindazole-3-carboxamide] in the incubation media. Scatchard analysis of the saturation data obtained from amygdaloid and hippocampal tissues identified the binding as being of high affinity and to a homogeneous population of binding sites (KD= 2.64 ± 0.75 and 2.93 ± 0.41 nmol/L and Bmax= 55 ± 7 and 44 ± 9 fmol/ mg of protein in the amygdala and hippocampus, respectively). 5-Hydroxytryptamine3 (5-HT3) receptor agonists and antagonists competed for the [3H]zacopride binding site, competing with up to 40% of total binding with a similar rank order of affinity in both tissues; agents acting on various other neurotransmitter receptors failed to inhibit binding. Kinetic data revealed a fast association that was fully reversible (k+1= 6.61 × 105 and 7.65 × 105/mol/L/s and k-1= 3.68 × 10−3 and 3.45 × 10−3/s in the amygdala and hippocampus, respectively). It is concluded that [3H]zacopride selectively labels with high affinity 5-HT3 recognition sites in human amygdala and hippocampus and, if these binding domains represent 5-HT3 receptors, may provide the opportunity for 5-HT3 receptor antagonists to modify 5-HT function in the human brain
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1989.tb09244.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spectra and structure of boron-nitrogen compounds. II. Infrared and Raman spectra of trimethylamine-borane (1974)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 78 (1974), S. 1503-1509 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100608a012
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of strain relaxation on forward bias dark currents in GaAs/InGaAs multiquantum well p–i–n diodes (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 5815-5820 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of the dislocation line density produced by the relaxation of strain in GaAs/InxGa1−xAs multiquantum wells where x=0.155–0.23 has been studied. There is a strong correlation between the dark line density, observed by cathodoluminescence, before processing of the wafers into photodiode devices, and the subsequent low forward bias (〈1.5 V) dark current densities of the devices. A comparison is made of the correlation between the reverse bias current density and dark line density and it is found that, in this range of strain, the forward bias current density varies more. Two growth methods, molecular beam epitaxy and metal organic vapor phase epitaxy, have been used to produce the wafers and no difference between the growth methods has been found in dark line or current density variations with strain. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363574
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetic force microscopy of Co-Pd multilayers with perpendicular anisotropy (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 2974-2980 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The domain structure of sputtered Co-Pd multilayer films of varying thickness has been investigated by magnetic force microscopy. The domains appear as stripe domains, typical of perpendicularly oriented films. The size of the domains was strongly influenced by the thickness of the film. The domain repetition lengths give an additional experimental parameter which has been used to provide a stronger test of a theoretical model developed for ferromagnetic multilayer films [H. J. G. Draaisma and W. J. M. de Jonge, J. Appl. Phys. 62, 3318 (1987)]. It is found that the experiment and theory are broadly in agreement provided that the increased magnetization of the multilayer caused by polarization of the Pd is accounted for. There is a noticeable difference between the variation of the measured and theoretical domain repetition lengths with film thickness. This is attributed to the effects of domain-wall pinning which is not considered in the model. It is estimated that the characteristic length of the films is 55 A(ring) and the domain-wall energy is 14 mJ/m2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357538
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  • 6
    Electronic Resource
    Electronic Resource
    Magnetic force microscope study of local pinning effects (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 418-423 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A magnetic force microscope is used as a highly localized probe of the magnetic properties of Co-Pd multilayer films. The stray field from the magnetic tip is used to induce magnetization changes in the sample on a scale of the order of ∼100 nm. These changes are characterized by discontinuous jumps in the force or force gradient acting on the tip due to its interaction with the magnetostatic stray field from the sample. Both reversible and irreversible domain-wall motion is seen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.358436
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Steady state photocurrent and photoluminescence from single quantum wells as a function of temperature and bias (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 892-900 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the variation with applied bias and temperature of steady state photoluminescence (DCPL) and photoconductivity (DCPC) from a series of GaAs/AlGaAs single quantum well, p-i-n structures with different well widths. We present the DCPC and DCPL results, which when combined, allow us to assess how significant nonradiative recombination is in the samples and hence the quality of the material. We discuss the qualitative features in the light of a new theoretical approach presented here for the first time. This includes contributions from escape (of both electrons and holes) and makes it possible to extract from the experimental data two parameters, each reflecting the competition between escape and one of the recombination processes (radiative or nonradiative) in the absence of the other. We further comment qualitatively on the bias and temperature dependence of these different processes. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364136
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of GaAs/InGaAs quantum wells using photocurrent spectroscopy (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 7775-7779 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report on characterization studies of high quality metal-organic vapor phase epitaxy and molecular beam epitaxy grown GaAs/InGaAs quantum wells, set within p-i-n diodes, to determine the well widths, indium mole fractions, and conduction band offset. We present photocurrent spectra containing a larger number of transitions than revealed in photoluminescence or photoluminescence excitation experiments. The energies of these transitions have been modeled using a theoretical characterization tool known as "contouring,'' which is used in this strained system for the first time. This has enabled determination of the conduction band offset in GaAs/InGaAs quantum wells, to a value between 0.62 and 0.64, for a range of indium fractions between 0.155 and 0.23. As a final, additional check on our results, we compare the field dependence of the e1-hh1 exciton transition energy with our theoretical calculations and find good agreement. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362383
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  • 9
    Electronic Resource
    Electronic Resource
    ASSESSMENT OF REDUCTION IN THE VOLUME OF LIQUOR AMNII (1972)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 79 (1972), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Liquor volume studies were made on 96 women in late pregnancy. Assessment of the amount of liquor by clinical observation and amnioscopy were compared with measurements of volume made by using a radio-isotope dilution technique. Technical difficulties prevented completion of the latter investigation in 13 cases. When the measured liquor volume was normal (≥500 ml.) a correct prediction was made in 39 of 53 (74 per cent) cases by abdominal palpation and in 41 of 53 (77 per cent) cases by amnioscopy.When the measured liquor volume was reduced (〈500 ml.) a correct prediction was made by abdominal palpation in 8 of 30 (27 per cent) cases and by amnioscopy in 18 of 30 (60 per cent) cases.Abdominal palpation is an unreliable method of detecting a reduction in liquor volume. Although amnioscopy is more reliable it gives rise to false consclusions in up to per cent cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1972.tb15800.x
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  • 10
    Electronic Resource
    Electronic Resource
    Laterality in five-year-olds conceived by intracytoplasmic sperm injection, standard in vitro fertilisation and natural conception: a European study (2005)
    Oxford, UK and Malden, USA : Blackwell Science Ltd
    BJOG 112 (2005), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective  To assess laterality in a group of European children conceived with the help of assisted reproductive therapy, or naturally conceived.Design  Prospective cohort study.Setting  Five European countries.Population  A total of 1525 five-year-old children divided into three groups according to conception status: naturally conceived; intracytoplasmic sperm injection (ICSI); in vitro fertilisation (IVF) group.Methods  All children were assessed using the McCarthy Scale of Children's Abilities (Motor Scale) with additional items using a comb, a spoon and an indirect measure was made of the parental handedness scores, using a questionnaire.Main outcome measures  Child handedness for drawing and writing.Results  Observed handedness did not differ significantly between natural conception, IVF and ICSI in girls or boys, except for ICSI-conceived girls, fewer of whom were left-handed than the naturally conceived controls, 7.0%versus 12.4% (P 〈 0.05), however, this was close to the population norm of 8%. The degree of parental handedness did not significantly vary in the three groups.Conclusions  Laterality, as assessed by handedness, may be marginally less common in girls conceived with assisted reproductive therapies than with children conceived naturally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.2005.00677.x
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