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  • 1
    Electronic Resource
    Electronic Resource
    An ECR ion source for ion implantation : Proceecings of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2538-2540 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The lifetime advantage of the filamentless discharge of high-current ECR ion sources is still often diminished through the degradation of the dielectric microwave transmitting window or the antenna. A 2.45 GHz ECR ion source that is now under construction and intended for the production of singly charged ions from reactive or contaminating gases is presented. The microwave power of up to 500 W is coupled into the entirely metallic discharge chamber through a resonant slit. The teflon vacuum sealing window is placed far from the plasma behind a high vacuum waveguide bend and is thus protected from backstreaming electrons and covering source material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142881
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  • 2
    Electronic Resource
    Electronic Resource
    Oxygen and carbon ions from a reflex discharge ion source : Proceecings of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2590-2592 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Intense beams of oxygen and carbon ions are of interest for applications in microelectronics and material modification. However, it is often impossible to produce them with usual arc discharge ion sources for a sufficiently long time because of the corrosion or covering of the cathode. The paper shows how the lifetime difficulties can be overcome using a strontium oxide platinum cathode in connection with oxygen or carbon dioxide as working gas. Beams in the 50 mA range with a share of 40% O+ or 30% C+ are steadily obtained from a compact reflex discharge ion source. A cathode lifetime of more than 60 h has been reached at a discharge current of 8 A.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142847
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Deuterium fourier transform NMR in solids and solid polymers
    Amsterdam : Elsevier
    Journal of Magnetic Resonance (1969) 35 (1979), S. 157-162 
    Details
    ISSN: 0022-2364
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-2364(79)90086-6
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  • 4
    Electronic Resource
    Electronic Resource
    Haemophagocytosis in early congenital syphilis (1999)
    Springer
    European journal of pediatrics 158 (1999), S. 553-555 
    Details
    ISSN: 1432-1076
    Keywords: Key words Congenital syphilis ; Haemophagocytosis ; Haemophagocytic lymphohistiocytosis ; Anaemia ; Thrombocytopenia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A previously healthy male infant developed hepatosplenomegaly, severe anaemia and thrombocytopenia 5 weeks after birth. Marked haemophagocytosis was present in the bone marrow. A typical maculopapular rash suggested early congenital syphilis. The diagnosis was confirmed by serology and by the presence of untreated syphilis in both parents. Conclusion Syphilis needs to be excluded in infants suspected of haemophagocytic lymphohistiocytosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004310051145
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  • 5
    Electronic Resource
    Electronic Resource
    Digital imaging of the chest in newborns: influence of radiation exposure on image quality (1993)
    Springer
    European radiology 3 (1993), S. 350-354 
    Details
    ISSN: 1432-1084
    Keywords: Chest ; Digital storage phosphor radiography ; Intensive care ; Neonates ; Radiation dose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In order to evaluate the influence of radiation exposure on image quality in digital storage phosphor radiography, 200 digital storage phosphor chest radiographs, obtained on a neonatal Intensive Care Unit, and the same number of conventional screen-film radiographs (speed 250) were assessed for the visibility of anatomical structures and catheters. The same exposure parameters were used in both groups. Normal variations of radiation exposure under free exposure conditions were estimated in all digital images using a formula calculating radiation dose in the screen-plane from image sensitivity, latitude and average grey value of the right lung. There was already a significant (P 〈 0.001) decline in image quality in the digital images with a 30–50% reduction in radiation exposure, which was most severe for structures such as trachea, retrocardiac space, lung texture and low-contrast catheters. Compared with optimally exposed conventional images, only those digital images with a slightly higher than normal dose had an equivalent image quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00167467
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  • 6
    Electronic Resource
    Electronic Resource
    Coagulation-associated complications of indwelling arterial and central venous catheters during heparin prophylaxis – a prospective study (1999)
    Springer
    European journal of pediatrics 158 (1999), S. S126 
    Details
    ISSN: 1432-1076
    Keywords: Key words Thrombosis ; Embolism ; Heparin ; Central venous catheterization ; Arterial catheterization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A prospective observational study was carried out to investigate complications of arterial and venous indwelling catheters. All patients of a mixed NICU/PICU admitted during a 12-month period were enrolled in this study with a stringent protocol of catheter prophylaxis, using heparin via continuous infusion in a dose of 100 IU/kg/day body weight or at least 100 IU/kg/day for each arterial and/or central venous catheter. Patients were regularly monitored for edema, thrombus, ischemia and catheter obstruction, i.e. complications amenable to heparinization. A total of 292 catheters in 130 patients were recorded. Patients' weight ranged between approximately 600 g to 10,000 g. Depending on the insertion site or type of catheter the frequency of complications was as follows: edema 0–12%; catheter obstruction 7–24%; ischemia 28–40%. No case of persistent thrombosis was detected. Conclusion A stringent protocol of heparinization leads to a low incidence of complications potentially amenable to anticoagulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00014337
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  • 7
    Electronic Resource
    Electronic Resource
    Significance of Respiratory Syncytial Virus (RSV) Infection in the 1st Year of Life (2000)
    Springer
    Infection 28 (2000), S. 34-37 
    Details
    ISSN: 1439-0973
    Keywords: Key words Respiratory syncytial virus ; Infancy ; Obstructive airway disease ; RSV test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Background: In this study we investigated the frequency, symptoms and predisposing factors of respiratory syncytial virus (RSV) infection during the 1st year of life in infants with obstructive airway disease in comparison with infants without airway disease. Patients: We enrolled 216 infants in their 1st year of life, who were hospitalized because of obstructive airway disease. As an age- and sex-balanced control group, we examined 133 infants hospitalized for other reasons than airway disease. Method: A deep pharyngeal swab was taken from all infants and immediately examined for the presence of RSV antigen by using an enzyme immunoassay (Directigen®). Patient data were surveyed by a questionnaire. Results: The frequency of RSV infections among infants with obstructive airway disease (34.3%; n = 74) differed significantly from the control group (15%; n = 20; p 〈 0.01). The frequency of RSV-infected infants with obstructive airway disease decreased with age ranging from 39.1% in trimenon I to 29.0% in trimenon IV. This trend was not observed in the control group. With respect to clinical symptoms and risk factors, there were no differences between RSV-infected versus noninfected infants. Conclusion: RSV is an important agent causing lower obstructive airway disease (34.3% of all patients). There are no specific symptoms that can be used for diagnosing RSV infection. In order to prevent other patients on the ward from contracting nosocomial RSV infection and in the light of therapeutic options, one should test newly admitted patients presenting with symptoms of an obstructive airway disease for RSV antigen. On a ward with high-risk patients, we would recommend the use of an RSV test for all new patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s150100050008
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