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  • 1
    Electronic Resource
    Electronic Resource
    Development of thyroid gland volume during the first 3 months of life in breast-fed versus iodine-supplemented and iodine-free formula-fed infants (1993)
    Springer
    Journal of molecular medicine 71 (1993), S. 13-20 
    Details
    ISSN: 1432-1440
    Keywords: Thyroid gland volume ; Breast feeding ; Formula feeding ; Iodine supplementation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The spontaneous development of thyroid gland volume (TGV) during the first 3 months of life was studied in entirely breast-fed infants (n = 21) and compared to those fed an iodine-supplemented formula (n = 19), an iodine-free formula (n = 5), or partially breast-fed in addition to an iodine-free (n = 4) or an iodine-supplemented formula (n =16). The TGV of the infants and their mothers was determined sonographically in addition to their urinary iodine concentrations 57 days postpartum and 3 months later. In ten additional lactating mothers the breast milk concentrations of thyroid hormones and iodine were determined. It was shown that at 3 months of age an infant consuming about 1000 ml breast milk per day receives about 2 μg thyroid hormones and 55 μg iodine per day. At the end of their first week of life the infants showed a TGV between 0.28 and 1.5 ml (median 0.61 ml) and a urinary iodine concentration between 0.03 and 16.3 μg/dl (median 3.0 μg/dl). At 3 months of age the TGV of the breast-fed infants had decreased by a median of 0.24 ml (= −34%; median of percentage changes) whereas those fed a formula without iodine had increased by a median of 0.26 ml (= + 50%; median of percentage changes). Those receiving an iodine-supplemented formula showed a TGV reduction of 0.14 ml (= +2%; median of percentage changes). The TGV development of the partially breast-fed infants lay between those being exclusively breast or formula fed. It is concluded that with respect to the development of TGV, breast milk is superior even to the feeding of an iodine-supplemented formula.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00210957
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  • 2
    Electronic Resource
    Electronic Resource
    Radiotracer Analysis of Catalyst Flow Distribution (1964)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 3 (1964), S. 356-361 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i260012a015
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The shape of the size distribution of an epidemic in a finite population
    Amsterdam : Elsevier
    Mathematical Biosciences 123 (1994), S. 167-181 
    Details
    ISSN: 0025-5564
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0025-5564(94)90010-8
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  • 4
    Electronic Resource
    Electronic Resource
    A model for territory and group formation in a heterogeneous habitat
    Amsterdam : Elsevier
    Journal of Theoretical Biology 148 (1991), S. 445-468 
    Details
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0022-5193(05)80231-0
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  • 5
    Electronic Resource
    Electronic Resource
    Analysis of a model of group territoriality based on the resource dispersion hypothesis
    Amsterdam : Elsevier
    Journal of Theoretical Biology 148 (1991), S. 433-444 
    Details
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0022-5193(05)80230-9
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  • 6
    Electronic Resource
    Electronic Resource
    Development of late congenital hip dysplasia: Significance of ultrasound screening (1993)
    Springer
    Pediatric radiology 23 (1993), S. 19-22 
    Details
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ultrasound for detecting congenital hip dysplasia was performed in 5970 infants, 2121 of whom were reinvestigated. Of those reinvestigated 726 belonged to the screened group not at risk examined as newborns, 70 were infants at risk first investigated as newborns and 363 were infants at risk first examined after the newborn period; the remainder were infants not at risk first investigated after the newborn period. Pathological findings were obtained in 7.7% of the entire group, in 3.9% of children at no risk, and in 5% of patients at risk. Deterioration of Graf's classification of types was seen in 3.2%. 13 children, 3 of the screened group and 10 of the nonscreened group developed hip dysplasia. None of them would have been missed since they were borderline type IIA on at least one side, which warranted mandatory follow-up.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02020214
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  • 7
    Electronic Resource
    Electronic Resource
    Numerical evaluation of observed sojourn time distributions for a single ion channel incorporating time interval omission (1994)
    Springer
    Statistics and computing 4 (1994), S. 1-12 
    Details
    ISSN: 1573-1375
    Keywords: Semi-Markov process ; Markov model ; ion channels ; Volterra integral equations ; quadrature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract The dynamical aspects of single ion channel gating can be modelled by a semi-Markov process. There is aggregation of states, corresponding to the receptor channel being open or closed, and there is time interval omission, brief sojourns in either the open or closed classes of states not being detected. This paper is concerned with the computation of the probability density functions of observed open (closed) sojourn-times incorporating time interval omission. A system of Volterra integral equations is derived, whose solution governs the required density function. Numerical procedures, using iterative and multistep methods, are described for solving these equations. Examples are given, and in the special case of Markov models results are compared with those obtained by alternative methods. Probabilistic interpretations are given for the iterative methods, which also give lower bounds for the solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00143919
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  • 8
    Electronic Resource
    Electronic Resource
    99. Die Computertomographie zur Informationserweiterung schwieriger Differentialdiagnosen im Kindesalter (1982)
    Springer
    Langenbeck's archives of surgery 358 (1982), S. 460-460 
    Details
    ISSN: 1435-2451
    Keywords: Computed tomography ; Childhood ; Differential diagnosis ; Computertomogramm ; Kindesalter ; Differentialdiagnose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Anhand einiger schwieriger Differentialdiagnosen werden Diagnose und präoperative Information mit herkömmlichen Mitteln incl. der Sonographie mit den Ergebnissen der CT verglichen. Die Krankheitsbilder umfassen Zwerchfellcyste, Beckenmilz, Psoas-Senkungsabszeß, bronchogene Cyste und Leberhämangiom. Durch Umgebungsreaktion und Abgrenzung erbringt die CT wertvolle Information, die für präoperative Diagnostik und Therapieplanung entscheidend sein kann. Die Diagnose selbst kann mit großer Wahrscheinlichkeit oft ohne CT gestellt werden. Die CT wird oft überschätzt.
    Notes: Summary The results obtained by computed tomography (CT) in a few cases of difficult diagnoses are compared with diagnoses and preoperative information obtained by conventional diagnostic methods including sonography. Clinical pictures are discussed of the intradiaphragmatic cyst, pelvic spleen, hypostatic abscess in psoas muscle, bronchogenic cyst, and hemangioma of the liver. By clearly outlining the boundary surface and the reaction of surrounding tissue, CT can give valuable information, which may be essential for correct preoperative diagnosis and therapeutic plan. Even so, the diagnosis itself can usually be made without CT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01271846
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  • 9
    Electronic Resource
    Electronic Resource
    An NRTL model for representation and prediction of deviation from ideality in electrolyte solutions compared to the models of Chen (1982) and Pitzer (1973) (1985)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 31 (1985), S. 392-399 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A new method of representation of electrolyte solution nonideality is derived, on the basis of similar assumptions, from a model applied by Cruz and Renon (1978) to binary electrolyte solutions. In order to test the validity of the model for representation of strong electrolyte properties, parameters were fitted to osmotic coefficient data for single, completely dissociated salts in aqueous solutions and were used to calculate osmotic coefficients of mixed aqueous electrolytes. Results are compared with those given by Chen's local composition model (Chen et al., 1982; Aspen, 1983) and Pitzer's truncated model (Pitzer, 1973, 1979; Pitzer and Mayorga, 1973; Pitzer and Kim, 1974), the same number of adjustable parameters being used in each case.The average standard deviations for single electrolytes are within 1% in the case of 1-1 salts for the three models, and within 2% in the other cases, except for Chen's model (5%). As for predicted results, both local-composition models yield standard deviations of less than 2%, while the accuracy given by the Pitzer model is better than 1.5%.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690310306
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    Paper (German National Licenses)
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