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  • 1
    Electronic Resource
    Electronic Resource
    An H− source for ESS : Proceedings of the 6th international conference on ion sources (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 1039-1041 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new version of the high efficiency source is being developed for the European Spallation Source. The goal of these experiments is to produce a nearly pure H− ion beam with a low electron to H− ratio and high current (70 mA). To achieve this, the discharge chamber is divided into two parts of different plasma parameters by means of a filter magnetic field. Furthermore, the plasma chamber is aligned unsymmetrically with respect to the z axis of the extractor. We obtained a current density of 10 mA/cm2 for an arc power as small as 1 kW. In preliminary experiments, a beam of 10 mA was extracted at an extraction voltage of 8 kV (1.8% impurities). Measurements of the beam current density, electron to H− ratio, and the ion composition for a wide range of discharge conditions will be presented in this article. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146751
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  • 2
    Electronic Resource
    Electronic Resource
    Beam emittance measurements on multicusp ion sources : Proceedings of the 6th international conference on ion sources (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 1249-1251 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Multicusp ion sources are used for various applications. Presently, the implementation of this type of ion source is planned for the development of an ion beam lithography machine, which will be used for the projection of sub-0.2 μm patterns onto a wafer substrate. Since, for this application, a very good beam quality and a small ion energy spread are required, emittance measurements have been performed on a multicusp ion source for various source conditions. It is shown that the installation of proper capacitors between the extraction electrodes is necessary to avoid rf pickup, which otherwise leads to a distortion of the beam emittance. The influence of the magnetic filter field on the beam emittance has been investigated, and the beam emittance of a dc filament-discharge plasma has also been compared to that of a rf-generated plasma. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146688
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  • 3
    Electronic Resource
    Electronic Resource
    Development of a D+ source for International Fusion Materials Irradiation Facility : Proceedings of the 6th international conference on ion sources (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 1054-1056 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A volume source, based on the high efficiency ion source (HIEFS), is being developed for D+ production in steady state operation. The source will be optimized for the extraction of atomic deuterium ions with high current densities. It was found that a maximum deuterium ion beam current density of 210 mA/cm2 can be achieved with a D+ fraction above 90%. At an extraction voltage of 35 kV and with an aperture radius of 4 mm, the source delivers 61 mA D+. After a description of the source and the experimental setup, the results of detailed studies of the beam composition in dependence of the plasma parameters are presented. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146756
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  • 4
    Electronic Resource
    Electronic Resource
    Controlled growth of bulk bicrystals and the investigation of microstructure-property relations of YBa2Cu3Ox grain boundaries (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 3746-3748 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A new method to prepare bicrystals with well defined planar interfaces in YBa2Cu3Ox (Y123) has been developed. The bicrystal misorientation is controlled by dual seeding using Nd1+xBa2−xCu3Oy single crystals. The grain boundary plane orientation is influenced by the positioning of the seeds and by control of the temperature gradient. The macro-, meso-, and microscopic planarity of the grain boundaries has been established by optical and electron microscopy. In addition, a difference in critical current density between the low (≤10°) and the high (≥20°) misorientation angle regime of nearly two orders of magnitude has been established in a series of [001]-tilt grain boundaries. Thus, this type of grain boundary may allow a less ambiguous interpretation of the relationship between microstructure and transport properties than is possible from bicrystal thin film boundaries by eliminating the potential variations in properties associated with a varying grain boundary plane. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.117209
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  • 5
    Electronic Resource
    Electronic Resource
    Ethyl p-Methoxycinnamate from Kaempferia galanga L. in Vietnam (1996)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 1255-1257 
    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/S0108270195016027
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  • 6
    Electronic Resource
    Electronic Resource
    The New Pentacyclic Saponine Ecdysantherin [3β-Hydroxy-20-methylpregn-5,14-dien-16-one-(18–20)-lactone] from Ecdysanthera rosea Hook. et Arn. (Apocynaceae) of Vietnam (1996)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 1574-1576 
    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/S0108270195017045
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  • 7
    Electronic Resource
    Electronic Resource
    Case report (1996)
    Springer
    European journal of pediatrics 155 (1996), S. 796-799 
    Details
    ISSN: 1432-1076
    Keywords: Bird-headed dwarfism ; Craniosynostosis ; Microcephalic osteodysplastic primordial dwarfism ; Osteodysplastic primordial dwarfism ; Seckel syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Abstract We report on a 13-month old boy with microcephalic osteodysplastic primordial dwarfism (MOPD), whose radiographic signs correspond with type II of this entity. Some of his clinical signs, such as the anomalies of the external genitalia and the urinary tract, are common to this subgroup of MOPD, but he also shows unusual clinical signs including bilateral knee dislocation and hypoplasia of the anterior corpus callosum. His clinical course was unusual with several episodes of breathing difficulties and increased intracranial pressure secondary to craniosynostosis at the age of 16 months. After fronto-orbital advancement for the treatment of brachycephaly, his psychomotor development improved remarkably. Conclusion MOPD type II may have a wider range of expression than previously delineated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02002910
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  • 8
    Electronic Resource
    Electronic Resource
    Case report (1996)
    Springer
    European journal of pediatrics 155 (1996), S. 796-799 
    Details
    ISSN: 1432-1076
    Keywords: Key words Bird-headed dwarfism ; Craniosynostosis ; Microcephalic ; osteodysplastic primordial dwarfism ; Osteodysplastic primordial ; dwarfism ; Seckel syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on a 13-month old boy with microcephalic osteodysplastic primordial dwarfism (MOPD), whose radiographic signs correspond with type II of this entity. Some of his clinical signs, such as the anomalies of the external genitalia and the urinary tract, are common to this subgroup of MOPD, but he also shows unusual clinical signs including bilateral knee dislocation and hypoplasia of the anterior corpus callosum. His clinical course was unusual with several episodes of breathing difficulties and increased intracranial pressure secondary to craniosynostosis at the age of 16 months. After fronto-orbital advancement for the treatment of brachycephaly, his psychomotor development improved remarkably. Conclusion MOPD type II may have a wider range of expression than previously delineated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02002910
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  • 9
    Electronic Resource
    Electronic Resource
    Visual 3D illusion: A systems-theoretical approach to psychosis (1996)
    Springer
    European archives of psychiatry and clinical neuroscience 246 (1996), S. 256-260 
    Details
    ISSN: 1433-8491
    Keywords: Binocular depth inversion ; Schizophrenia ; Alcohol withdrawal ; Sleep deprivation ; Systems theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Binocular depth inversion represents an illusion of visual perception. Such an inversion does not occur in all cases, especially when objects with a higher degree of familiarity (e.g. photographs of faces) are displayed. Cognitive factors are assumed to override the binocular disparity cues of stereopsis. We tested the hypothesis that during psychotic and similar states the human CNS is unable to correct the implausible perceptual hypothesis. Measurements of binocular depth inversion in perception of 3D objects were performed in schizophrenic patients (n=13), in patients with alcohol withdrawal (n=10), in sleep-deprived medical staff (n=10) and in healthy volunteers (n=41). The binocular depth inversion scores were highly elevated in the patient group and in the sleep-deprivated medical staff in comparison with healthy volunteers. The data demonstrate that impairment of binocular depth inversion reflects a common final pathway, characterized by an impairment of adaptive systems regulating perception.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02190277
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