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  • 1
    Electronic Resource
    Electronic Resource
    Pneumothorax in the neonatal period (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 38 (1983), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The incidence of pneumothorax in the neonatal period is reviewed. Most infants who developed a pneumothorax were undergoing intermittent positive pressure ventilation. The most common underlying pathology associated with pneumothorax was idiopathic respiratory distress syndrome. This was the only condition in which a pneumothorax occurred in spontaneously breathing patients. The development of a pneumothorax was not significantly related to gestational age, birth weight, high ventilator inflation pressure, maximum fractional inspired oxygen concentration or the method of delivery. Evidence is presented to suggest that the development of a pneumothorax is not primarily a complication of ventilation but is due to the more severe pulmonary pathology of infants who require ventilatory assistance. Whatever the mechanism, prompt diagnosis and treatment mean that this common complication does not necessarily increase mortality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1983.tb12024.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Bone Remodeling and Structure in Postmenopausal Women Treated with Long-Term, High-Dose Estrogen Therapy (1999)
    Springer
    Osteoporosis international 10 (1999), S. 52-58 
    Details
    ISSN: 1433-2965
    Keywords: Key words:Anabolic – Bone remodeling – Estrogen – Postmenopausal women
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract: Conventional hormone replacement therapy preserves bone mass predominantly by reducing bone turnover but does not exert significant anabolic skeletal effects. In contrast, high doses of estrogen have been shown to increase bone formation in animals and we have recently reported high bone mineral density values in women treated long-term with estradiol implant therapy. The aim of this study was to investigate the mechanisms by which high doses of estrogen may increase bone mass in postmenopausal women. Iliac crest biopsies were obtained from 12 women who had received long-term treatment with estradiol implants (at least 14 years), on demand, following hysterectomy and bilateral salpingo-oophorectomy. Indices of bone turnover, remodeling balance and cancellous bone structure were assessed by image analysis and compared with those of premenopausal women. Mean wall width was significantly higher in women treated with estradiol therapy than in premenopausal women (44.8 ± 4.8 vs 38.8 ± 2.8 mm; mean ± SD; p = 0.001) and eroded cavity area was significantly lower in the implant-treated women (3612 ± 956 vs 5418 ± 1404 mm2; p = 0.001). Bone formation rate at tissue level and activation frequency were lower in the women treated with implants, although the differences were not statistically significant. Indices of cancellous bone structure were generally similar between the two groups. These results provide the first direct evidence that high-dose estrogen therapy produces anabolic skeletal effects in postmenopausal women and indicate that these are achieved by stimulation of osteoblastic activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001980050194
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Haematology of normal native cattle in Botswana (1974)
    Springer
    Tropical animal health and production 6 (1974), S. 53-54 
    Details
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An examination of 519 cattle from 27 areas in the eastern and southern regions of Botswana was made to determine the haemoglobin concentration, packed cell volume, mean cell haemoglobin concentration, erythrocyte sedimentation rate and total and differential white cell count. The differences between the Tswana and Africander cattle in the country were not significant. Cattle in Botswana tend to have lower differential neutrophil counts and higher differential lymphocyte counts than values found by most other workers for cattle elsewhere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02380749
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Texture of some crystalline synthetic polymers by electron microscopy (1953)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 11 (1953), S. 215-220 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The importance of sample preparation is demonstrated with examples of techniques based on (1) evaporation in vacuo, (2) casting from solvent or solvent mixtures, (3) ultrasonic disintegration. Attention is drawn to the “sheaf-like” arrangement of the microfibrils and to other aspects of the texture. There is evidence of periodicities, but these are considered to vary with the preparation, and may be a consequence of the helical arrangement and “rope-like” character of the bundles of microfibrils or of a tendency to form a woven texture.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1953.120110303
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    Paper (German National Licenses)
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