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  • 1
    Electronic Resource
    Electronic Resource
    Wet thermal oxidation of AlAsSb alloys lattice matched to InP (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 7600-7603 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Wet thermal oxidation of AlAsSb was investigated. The oxidation kinetics was studied as a function of temperature and oxidation duration. An expression to allow accurate determination of the oxide depth for any temperature and time was established. Secondary ion mass spectrometry profiles and x-ray diffraction were used to demonstrate that an interfacial layer, composed of pure Sb and As and textured on InP, is formed during the oxidation process. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.365335
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  • 2
    Electronic Resource
    Electronic Resource
    Imaging of vascularized fibular grafts in large bone reconstruction in skeletally immature patients (1997)
    Springer
    Skeletal radiology 26 (1997), S. 404-408 
    Details
    ISSN: 1432-2161
    Keywords: Key words Bone graft ; Vascularized bone graft ; Limb salvage surgery ; Bone tumor ; Children ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objective. To describe the imaging findings of vascularized fibular grafts (VFG) in large bone reconstruction in children and teenagers. Design and patients. Fifteen patients aged from 4 to 19 years underwent VFG for bone reconstruction for primary tumors involving bone in 13 cases and for chronic osteomyelitis in 2 cases. Lesions were located in the femur (6 cases), the tibia (6 cases), the humerus, the distal fibula and the ilium. Radiographic follow-up was performed in all patients, radionuclide studies in 12 patients and MRI in 8. Results. Plain films showed a lamellated periosteal reaction on the VFG within 3 weeks following the procedure in all cases. Fusion of VFG and host bone occurred during the first 3 months. Radionuclide uptake of the VFG was seen in all cases but one. MRI showed cortical thickening and conservation of the high signal intensity of fatty marrow on T1-weighted sequences, and periosteal enhancement on dynamic post-contrast studies in all but one of the patients. Conclusion. Radionuclide studies and MRI show the periosteal enhancement and assess the viability of the VFG satisfactorily. However, we feel that plain films may be sufficient to ascertain this viability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002560050255
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  • 3
    Electronic Resource
    Electronic Resource
    MR imaging and pediatric fractures (1999)
    Springer
    Skeletal radiology 28 (1999), S. A362 
    Details
    ISSN: 1432-2161
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00006650
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  • 4
    Electronic Resource
    Electronic Resource
    High-pressure behaviour of germanate olivines studied by X-ray diffraction and X-ray absorption spectroscopy (1996)
    Springer
    Physics and chemistry of minerals 23 (1996), S. 173-185 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract Germanate olivines Mg2GeO4, Ca2GeO4 and CaMgGeO4 have been studied by high-pressure X-ray Diffraction and high-pressure X-ray Absorption Spectroscopy. The three compounds were compressed, in the 0–30 GPa pressure range, at room temperature in a diamond-anvil cell, silicon oil being used as the pressure transmitting medium. Values of K0 are 166 ± 15, 117 ± 15 and 152 ± 14 GPa for Mg2GeO4, Ca2GeO4 and CaMgGeO4 respectively. These olivines all exhibit compression anisotropy, the a axis being the least compressible. Crystal to crystal phase transitions have been observed in Mg2GeO4 and Ca2GeO4 above 12 GPa and 6 Gpa respectively. The nature of these structural changes remains unclear yet. The onset of amorphization has been observed in Mg2GeO4 and Ca2GeO4 at pressures above about 22 and 11 GPa respectively. These phase transitions and amorphization processes do not involve any detectable increase in the coordination number of germanium atoms. At higher pressure (P 〉23 GPa), we report the onset of a transition from a phase with fourfold coordinated germanium to a phase with higher germanium coordination number in CaMgGeO4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220728
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  • 5
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    RINGEL (J.). - "Césarée de Palestine" (Book Review) (1976)
    Paris : Periodicals Archive Online (PAO)
    Revue de philologie, de littérature et d'histoire anciennes. ser.3:50=102 (1976) 332 
    Details
    ISSN: 0035-1652
    Topics: Classical Studies
    Notes: BULLETIN BIBLIOGRAPHIQUE
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:p232-1976-050-00-000118
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  • 6
    Electronic Resource
    Electronic Resource
    Multiple small accessory marker chromosomes from different centromeric origin in a moderately mentally retarded male (1999)
    Springer
    Human genetics 〈Berlin〉 105 (1999), S. 611-618 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. The occurrence of more than two small accessory chromosomes (SACs) in a single individual is extremely rare. Here, we characterize six SACs found in the cells of two different tissues of a moderately mentally retarded male. Microdissection combined with regular FISH demonstrates that the SACs are ring chromosomes derived from the centromeres of different chromosomes. The SACs are often associated with the centromeres of other chromosomes. Immunofluorescence with an anti-CENP-C antibody demonstrates that the SACs contain an active centromere. A possible mechanism by which the SACs originated and their clinical relevance are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004399900184
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  • 7
    Electronic Resource
    Electronic Resource
    Pulmonary anthracosis in children (1999)
    Springer
    European radiology 9 (1999), S. 485-486 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Lung disease ; Pneumoconiosis ; Children
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. We report two cases of children with malignancies and subpleural nodules found on computed tomography (CT) scan. In both cases the diagnosis was anthracosis. This pathologic condition has never been reported in children. Causes of anthracosis include a smoking environment, living in urban areas and air pollution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050699
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  • 8
    Electronic Resource
    Electronic Resource
    Postoperative follow-up of juvenile nasopharyngeal angiofibromas: assessment by CT scan and MR imaging (1998)
    Springer
    European radiology 8 (1998), S. 756-764 
    Details
    ISSN: 1432-1084
    Keywords: Key words: Nasopharynx ; neoplasma ; Angiofibroma ; Angiofibroma ; postoperative ; CT ; MR imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The purpose of this study was to assess the radiological findings after surgical removal of juvenile nasopharyngeal angiofibromas (JNA). The postoperative CT and MRI scans of ten patients were reviewed. The cured group included six patients. The non-controlled group included six patients with eight recurrences. Two patients belonged to both groups as they were also followed and cured after surgery for relapse. Four recurrences were asymptomatic and diagnosed by imaging. The imaging patterns were matched to the patients clinical status and endoscopic findings. In the cured group, non-enhanced residual soft tissue masses were seen in all cases. In the non-controlled group, recurrence was always demonstrated on early postoperative CT or MR as a dramatically enhanced mass. The recurrence was located in the lateral or superior aspect of the nasopharynx (n = 3), deep to the fossa of Rosenmuller (n = 4) or out of the nasopharynx (n = 1). In two cases a remaining enhanced mass disappeared spontaneously on iterated examinations. Because of numerous asymptomatic relapses, a radiological workup is recommended four months after surgery, even in patients with normal endoscopy, to rule out posterolateral or extranasopharyngeal recurrences. Spontaneous evolution of residual masses must be appreciated on iterated imaging examinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003300050468
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  • 9
    Electronic Resource
    Electronic Resource
    Electronic properties of ortho-polymer A1C60 (A = K, Rb) and related phases (1997)
    Springer
    Applied physics 64 (1997), S. 283-288 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 71.30+h; 76.30; 82.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: 1 C60. Its singular structural, magnetic and electrical properties greatly enhanced the study of the AC60 phases (A = Rb, K and \chem{Cs}). We report our continuous wave (cw) ESR results on the structural phase transformations, phase instabilities and the related kinetics of K1C60. We quantitatively explain the origin of the difference between Rb1C60 and K1C60 phase diagrams. The stability of OP-Rb1C60 together with the narrowness of its homogenous cw-ESR linewidth in the temperature range \rangeunit{16}{100}{K} allow to perform pulsed ESR experiments. Pulsed ESR experiments measure precisely both the electronic spin-spin ( T_2 ) and spin-lattice ( T_1 ) relaxation times. Above \valunit{40}{K} , the equality of T_1 and T_2 , which are the only contributions to the cw-ESR linewidth, constitutes a convincing evidence of the metallic nature of OP-Rb1C60. The drastic increase (decrease) of the linewidth ( T_2 ) below \valunit{40}{K} is interpreted in terms of an \qut{electronic dimerization}.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390050479
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  • 10
    Electronic Resource
    Electronic Resource
    A chromosomal abnormality (21q-) in primary thrombocytosis (1979)
    Springer
    Human genetics 〈Berlin〉 50 (1979), S. 105-106 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A patient with primary thrombocytosis was found to present an acquired deletion of the long arm of chromosome 21 (21q-). A similar observation reported in the literature is hereby confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00295597
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