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  • 2000-2004  (6)
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  • 1
    Electronic Resource
    Electronic Resource
    Generation of auroral kilometric radiation by electron horseshoe distributions (2000)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 7 (2000), S. 3089-3092 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High time resolution of rocket and satellite electron distribution functions within the source region of auroral kilometric radiation display a characteristic crescent shaped or horseshoe distribution. Such distribution functions are created by a field aligned electron beam moving into an increasing magnetic field, conservation of the first adiabatic invariant causes an increase of their pitch angle. This produces a broad region on the distribution function where ∂fe/∂v⊥〉0, and is a possible source of free energy leading to radio wave emission by the cyclotron maser instability, which is more efficient than the conventional loss-cone maser instability. The stability of these electron horseshoe distribution functions is examined for right-hand extraordinary mode (R–X mode) radiation close to the electron cyclotron frequency propagating perpendicular to the magnetic field. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.874163
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A study of peri-operative respiratory complications in patients with Apert syndrome (2002)
    Oxford, UK : Blackwell Science Ltd
    Pediatric anesthesia 12 (2002), S. 0 
    Details
    ISSN: 1460-9592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Introduction  Children with Apert syndrome (acrocephalosyndactyly) require anaesthesia for a variety of diagnostic and surgical procedures. These range from non-invasive radiological imaging to major craniofacial interventions.Recent reports have suggested that patients with Apert syndrome have an incidence of peri-operative respiratory complication in the order of 10% of anaesthetics administered.Over the fast ten years 73 patients with Apert syndrome have been treated in our institution. Each child receives approximately 10 anaesthetics during the course of their treatment. Anecdotal evidence suggested that the peri-operative complication rate may be significantly lower than 10% and that children with Apert syndrome may therefore be falsely labelled as being high risk. A formal analysis of the incidence of complications was therefore undertaken.Methods  Following local Ethical Committee approval, a retrospective case note review was performed of a series of 73 patients with Apert syndrome. Information was recorded relating to each anaesthetic administered over the period from 1991 to 2001. This information included details of pre-operative status, anaesthetic technique employed, operative procedure, peri-operative observations recorded, the patient's post-operative course and the occurrence of documented respiratory complications.Analysis of results will be presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9592.2002.10271_2.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Anaesthetic management in facial bipartition surgery: The experience of one centre (2004)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 59 (2004), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Facial bipartition is amongst the most radical craniofacial surgery undertaken but is performed rarely. There is little published information on its anaesthetic management. We undertook a retrospective case-note review of 22 consecutive patients undergoing bipartition surgery by the same surgical team in one centre in the period 1993–2001. There were incomplete data for two cases and these were therefore excluded. Patients were aged 2 months to 19 years. Conditions treated were facial cleft (n = 5), frontonasal dysplasia (n = 7) and facial dysostosis (n = 8).Intra-operative complications included major haemorrhage (n = 4), bradycardia (n = 3) and unintentional tracheal extubation (n = 1). There were no peri-operative deaths. All patients required intra-operative blood transfusion and 15% of them had a postoperative haemoglobin concentration 〉 115% of their pre-operative value. In this series, four patients required postoperative lung ventilation for a median duration of 3 days. Infants 〈 14 months old were significantly more likely to receive a massive blood transfusion (p = 0.0002), to have an excessively high postoperative haematocrit (p = 0.008) and to require postoperative lung ventilation (p = 0.0002) compared with older patients. We conclude that patients in this age group have a significantly increased risk of postoperative complications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.2004.03529.x
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  • 4
    Electronic Resource
    Electronic Resource
    Comparison of 0.2% ropivacaine and 0.25% bupivacaine for axillary brachial plexus blocks in paediatric hand surgery (2003)
    Oxford, UK : Blackwell Science Ltd
    Pediatric anesthesia 13 (2003), S. 0 
    Details
    ISSN: 1460-9592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background:  The purpose of this study was to compare the use of ropivacaine 0.2% with bupivacaine 0.25% for axillary brachial plexus block in children undergoing hand surgery.Methods:  In a double-blind, randomized study, 35 children undergoing hand surgery received axillary brachial plexus blocks with 0.5 ml·kg−1 of either 0.2% ropivacaine or 0.25% bupivacaine. Pain scores were noted at 0, 3, 6, 12 and 24 h after surgery. The time to first dose of codeine phosphate and the total doses of all analgesics given were recorded.Results:  There was no significant difference between the two groups in pain scores, the time to first dose of codeine phosphate or in analgesic requirements in the first 24 h.Conclusions:  Ropivacaine 0.2% is as effective as bupivacaine 0.25% for axillary brachial plexus blocks in children undergoing hand surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9592.2003.01065.x
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  • 5
    Electronic Resource
    Electronic Resource
    Evidence based paediatric resuscitation (2001)
    Oxford UK : Blackwell Science Ltd
    Pediatric anesthesia 11 (2001), S. 0 
    Details
    ISSN: 1460-9592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9592.2001.00658.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Dust particle charging and formation of dust structures in the upper atmosphere (2000)
    Springer
    JETP letters 72 (2000), S. 364-368 
    Details
    ISSN: 1090-6487
    Keywords: 94.10.−s ; 52.25.Zb ; 92.60.Nv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate the dust particle charging process in the Earth’s upper atmosphere. Calculating the spectra of solar radiation, we study the influence of the photoelectric effect on the charging process. We show that both positively and negatively charged dust particles are present in the upper atmosphere. We consider the mechanisms which can be responsible for the formation of dust structures like noctilucent clouds and polar mesosphere summer echoes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1331147
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    Paper (German National Licenses)
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