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  • 1
    Electronic Resource
    Electronic Resource
    Frontal Cortical and Left Temporal Glutamatergic Dysfunction in Schizophrenia (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 52 (1989), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Glutamatergic mechanisms have been investigated in postmortem brain samples from schizophrenics and controls. D-[3H]Aspartate binding to glutamate uptake sites was used as a marker for glutamatergic neurones, and [3H]kainate binding for a subclass of postsynaptic glutamate receptors. There were highly significant increases in the binding of both ligands to membranes from orbital frontal cortex on both the left and right sides of schizophrenic brains. The changes are unlikely to be due to antemortem neuroleptic drug treatment, because no similar changes were recorded in other areas. A predicted left-sided reduction in D-[3H]aspartate binding was refuted at 5% probability, but not at 10%. Previously reported high concentrations of dopamine in left amygdala were strongly associated with low concentrations of D-[3H]aspartate binding in left polar temporal cortex in the schizophrenics. The findings are compatible with an overabundant glutamatergic innervation of orbital frontal cortex in schizophrenia. The results also suggest that schizophrenia may involve left-sided abnormalities in the relationship between temporal glutamatergic and dopaminergic projections to amygdala.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1989.tb07257.x
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  • 2
    Electronic Resource
    Electronic Resource
    Photoluminescence study on undoped single quantum well pseudomorphic structures (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 53 (1988), S. 2158-2160 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this letter, photoluminescence results obtained from two different undoped multilayered pseudomorphic structures grown by molecular beam epitaxy are compared. Intense and spectrally narrow emission was observed from both GaAs/InxGa1−xAs/GaAs and AlxGa1−xAs/InxGa1−xAs/GaAs structures. Excitonic emission from the quantum wells was confirmed by measurements of photoluminescence excitation spectra. The intensity and temperature dependences of the photoluminescence also revealed emission arising from bound excitons and impurities in the quantum wells. Intrinsic and extrinsic emission from confined levels was confirmed by the recorded photoluminescence excitation spectra along with intensity and temperature dependences. In the asymmetric AlxGa1−xAs/InxGa1−xAs/GaAs structure large changes were observed in the photoluminescence intensity under continuous optical excitation which are caused by the optical excitation of defects in the ternary AlxGa1−xAs on top of the pseudomorphically grown InxGa1−xAs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100304
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  • 3
    Electronic Resource
    Electronic Resource
    Frontal Negative and Parietal Positive Components of the Slow Wave Dissociated (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Psychophysiology 24 (1987), S. 0 
    Details
    ISSN: 1469-8986
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: The so-called ‘slow wave’ of tbe event-related potential is composed of a slow frontal negative shift and a slow parietal positive shift which usually arc both present or both absent in records. A persistent question has been whether these slow shifts are generated by one and the same cerebral process or by two cerebral processes which tend to be evoked in very similar conditions, i.e., whether these two slow shifts can be dissociated. The present paper demonstrates such a dissociation. By recording these shifts to very infrequent auditory stimuli deviating in pitch from the frequent homogeneous stimuli of the sequence, a multitude of such data was obtained which permitted the identification and measurement of the slow frontal negative and the slow parietal positive shifts at the level of single trials. These data revealed no positive relationship between the amplitudes of the two shifts. Rather, the results showed an opposite tendency, i.e., a large frontal negativity was often associated with a small parietal positivity (or none) and vice versa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1469-8986.1987.tb00305.x
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  • 4
    Electronic Resource
    Electronic Resource
    Dicotyledonous weeds of spring cereal crops in north-east Scotland (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 29 (1989), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A survey of dicotyledonous weeds of spring cereals was conducted prior to herbicide application in 1985 in six districts of north-east Scotland, which involved a total of 113 fields. Results were similar to those from an earlier survey in 1973. The main species remained the same but in four of the six districts, total weed densities were lower. Stellaria media was the most common species except in Upper Banffshire and Morayshire where Galeopsis spp. and Polygonum aviculare, respectively, were predominant. The main changes apparent were a decline of Spergula arvensis and Polygonum persicaria, and an increase in Matricaria perforata and Viola arvensis in several districts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1989.tb00839.x
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  • 5
    Electronic Resource
    Electronic Resource
    The Development of Immunological Reactivity in Fetal Lambs (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 459 (1985), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1985.tb20810.x
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  • 6
    Electronic Resource
    Electronic Resource
    Loss of cortical GABA uptake sites in Alzheimer's disease (1988)
    Springer
    Journal of neural transmission 71 (1988), S. 219-226 
    Details
    ISSN: 1435-1463
    Keywords: GABA uptake ; [3H]nipecotic acid ; Alzheimer's disease ; temporal cortex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary [3H]Nipecotic acid bound to membranes of human brain in a saturable, reversible manner which was totally dependent on the presence of sodium ions. The potencies of compounds in inhibiting the specific binding of [3H] nipecotic acid were closely correlated with their potencies in inhibiting the neuronal uptake of [3H]GABA. Compounds selective for GABA receptors were inactive. [3H]Nipecotic acid appears to label neuronal high affinity GABA uptake sites. The binding of [3H]nipecotic acid was substantially reduced in the temporal cortex of brains from subjects with Alzheimer-type dementia, but not in other brain regions. It is concluded that some loss of GABA terminals occurs in this disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01245715
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  • 7
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    Mohl, Madame, Some Personal Recollections of (1883)
    Cambridge : Periodicals Archive Online (PAO)
    Macmillan's magazine. 48 (1883:May/Oct.) 424 
    Details
    ISSN: 1751-9047
    Topics: General, Interdisciplinary
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:8120-1883-048-00-000019
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  • 8
    Electronic Resource
    Electronic Resource
    Short-term consequences of different breeding histories for captive rhesus macaque mothers and young (1985)
    Springer
    Behavioral ecology and sociobiology 18 (1985), S. 83-89 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Life histories of rhesus monkey mothers (Macaca mulatta) were classified in terms of (1) whether the mothers were top ranking or not, (2) gave birth to more daughters than sons or vice versa, and (3) gave birth at intervals of one year or of more than a year. Bearing daughters at intervals of more than a year was the most common history among top ranking mothers, while bearing sons annually was most common among other mothers. The consequences for the infants and mothers of such histories were examined and (1) infants were more likely to die as neonates if they had an older sister, especially if the sister had been born in the previous birth season; (2) dyads with daughters received more aggression from other adults in the daughter's first year, but not necessarily through the year following the birth of the next infant (3) when mothers of daughters gave birth of the next infant after at least one fallow year, their daughters directed considerable amounts of harassing aggression to their next-born sibling; and (4) mothers of sons but not of daughters delayed longer when they received more aggression from other adults. We discuss the views that birth sex ratios may be affected by a mother's rank rather than how often she is involved in aggressive encounters with other adults; and that in top-ranking mothers, birth intervals may be controlled more by the infant's sex than aggression the family received. Fitting the data into a life history strategy model is done as a provisional and speculative exercise
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299036
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  • 9
    Electronic Resource
    Electronic Resource
    Maternal rejection and infant play in rhesus monkey infants (1987)
    Springer
    International journal of anthropology 2 (1987), S. 21-27 
    Details
    ISSN: 1824-3096
    Keywords: mother-infant conflict ; rejection ; play ; rhesus monkey ; infant ; Macaca mulatta
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In five-minute records in which they were rejected by their mothers, passive preventions of nipple access, 11- to 15-week-old group-living rhesus monkey infants (Macaca mulatta) initiated fewer playful conctacts with others relative to the other kinds of social contact they initiated, while their overall rates of initiating social contacts may not have been reduced. Whether acts of maternal rejection are costly and distressing to the infant may depend on the nature of the social companions available for it and until more is known of the context of such acts, hypothesis about weaning conflict will be difficult to test in detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442069
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  • 10
    Electronic Resource
    Electronic Resource
    UNISOR on-line nuclear orientation facility (UNISOR/NOF) (1988)
    Springer
    Hyperfine interactions 43 (1988), S. 151-156 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The UNISOR on-line nuclear orientation facility (UNISOR/NOF) consists of a3He−4He dilution refrigerator on line to the isotope separator. Nuclei are implanted directly into a target foil which is soldered to the bottom accessed cold finger of the refrigerator. A 1.5 T superconducting magnet polarizes the ferromagnetic target foils and determines the axis of symmetry. Up to eight gamma detectors can be positioned around the refrigerator, each 9 cm from the target. A unique feature of this system is that the k=4 term in the directional distribution function can be directly and unambigously deduced so that a single solution for the mixing ratio can be found. The first on-line experiment at this facility reported here was a study of the decay of the191Hg and193Hg isotopes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02398295
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