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  • 1
    Electronic Resource
    Electronic Resource
    Datenschutz innerhalb des länderübergreifenden Deutschen Zentralregisters für kindliche Hörstörungen (1998)
    Springer
    HNO 46 (1998), S. 339-345 
    Details
    ISSN: 1433-0458
    Keywords: Schlüsselwörter Datenschutz ; Datensicherheit ; Medizinische Register ; Datenerhebung ; Kindliche Hörstörungen ; Key words Medical registries ; Data collection and security ; Hearing loss and childhood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The German Registry for Hearing Loss in Children (DZH) processes nationwide data from audiological centers. Coping with the accrued data and its subsequent management and analysis requires a high degree of security and control. To establish a nationwide registry it is necessary at an early stage to take into consideration the legal requirements of the participating states. Use of the DZH as an example demonstrates how a pragmatic solution can be reached. Special issues concerning data collection, transfer, storage and deletion, coding strategies to ensure anonymity, checking for duplicate entries, data separation, and automated data analysis and data protection are explained.
    Notes: Zusammenfassung Das Deutsche Zentralregister für kindliche Hörstörungen (DZH) verarbeitet bundesweit Daten von verschiedenen audiologischen Einrichtungen. Die Bewältigung der anfallenden Datenmengen, die nachfolgende Datenverwaltung und -analyse erfordern neben einer differenzierten und kontrollierbaren Verarbeitung ein Höchstmaß an Datensicherheit. Vor allem die länderübergreifende Struktur eines Registers erfordert schon bei der Planung engste Zusammenarbeit mit dem zuständigen Landesdatenschutzbeauftragten und auch mit den Landesdatenschutzbeauftragten anderer beteiligter Bundesländer. Am Beispiel des DZH wird demonstriert, wie eine kooperative Zusammenarbeit pragmatisch realisiert werden kann. Besonderheiten bei der Datenerhebung, Datentransfer, Speicherung und Löschung von Daten, technische Datenschutzmaßnahmen, Sicherstellung von Anonymität durch Codierungsstrategien, Duplikatsprüfung, Datentrennung und automatisierte Datenauswertung werden an Beispielen erläutert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001060050249
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Wird die Diagnose bei persistierenden kindlichen Hörstörungen immer noch zu spät gestellt? (1998)
    Springer
    HNO 46 (1998), S. 598-602 
    Details
    ISSN: 1433-0458
    Keywords: Schlüsselwörter Diagnosezeitpunkt ; Verzögerte Diagnose ; Medizinische Register ; Datenerhebung ; Kindliche Hörstörungen ; Key words Age at diagnosis ; Delay of diagnosis ; Medical registries ; Data collection ; Hearing loss in childhood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Since 1994, the German Registry for Hearing Loss in Children has registered data of 1500 children and by now can present results concerning the age at diagnosis of permanent hearing loss in children in Germany. The mean age at diagnosis is still very high. There is a strong correlation between age at diagnosis and degree of hearing loss, i.e., severe and profound hearing loss, is diagnosed distinctly earlier than mild and moderate hearing loss. On average, mild hearing loss is diagnosed with 6.2 years, moderate h.l. with 4.4 years, severe hearing loss with 2.5 years and profound hearing loss with 1.9 years. This corresponds with the results of regional German studies. At least regionally, in other European countries the age at diagnosis is known to be distinctly lower. In 36% of the children registered in Germany the delay between first suspicion and diagnosis of permanent hearing loss is 1 year or more.
    Notes: Zusammenfassung Das Deutsche Zentralregister (DZH) für kindliche Hörstörungen hat seit 1994 Patientendatensätze von 1500 Kindern erfaßt und kann mittlerweile u.a. Aussagen und Ergebnisse zum Diagnosezeitpunkt persistierender kindlicher Hörstörungen in der Bundesrepublik Deutschland vorlegen. Nach wie vor ist das mittlere Alter bei der Diagnose persistierender kindlicher Hörstörungen sehr hoch. Das Diagnosealter korreliert stark mit dem Grad der Hörstörung, d.h. an Taubheit grenzende und hochgradige Hörstörungen werden deutlich früher diagnostiziert als leichte und mittlere. So werden leichte Hörstörungen im Durchschnitt erst mit 6;2 Jahren diagnostiziert, mittlere mit 4;4 Jahren, hochgradige mit 2;5 Jahren und an Taubheit grenzende mit 1;9 Jahren. Dies entspricht den Ergebnissen bereits vorliegender regionaler deutscher Studien [1–2]. Aus anderen europäischen Länderen sind zumindest regional deutlich frühere Diagnosezeitpunkte bekannt [3–5]. Bei 36% der im DZH erfaßten Kinder liegt zwischen dem ersten Verdacht auf Vorliegen einer persistierenden kindlichen Hörstörung und der Sicherstellung der Diagnose ein Jahr und mehr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001060050279
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Amalgam electrodes: Direct electrochemical generation of cadmium macrocyclic complexes (1992)
    Weinheim : Wiley-Blackwell
    Electroanalysis 4 (1992), S. 19-26 
    Details
    ISSN: 1040-0397
    Keywords: Amalgam electrode ; cadmium ; macrocyclic complexes ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The electrochemical oxidation of cadmium amalgam was studied in the nonaqueous solvents CH2Cl2, 1,2-C2H4Cl2 and propylene carbonate. Significant coordination effects were observed between the electrogenerated Cd(II) ions and 18-membered macromonocyclic ligands, each containing six Lewis bases heteroatoms: 18-O6, 18-S6, 18-N2O4, and 18-N6. The stoichiometries and the stabilities of the resulting complexes were determined. These stabilities increase from 18-O6 or 18-S6 to 18-N6.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140040106
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Anodic oxidation of mercury in the presence of monocyclic ligands in propylene carbonate (1989)
    Weinheim : Wiley-Blackwell
    Electroanalysis 1 (1989), S. 493-499 
    Details
    ISSN: 1040-0397
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of 12 macrocycles containing 4, 6, or 8 N, S, and O heteroatoms (with increasing size from 14 to 24 atoms in the cycle) was studied to ascertain size and heteroatoms effects on the formation and 14 redox characteristics of their mercuric complexes. The concentration dependence of anodic currents at mercury electrodes in solutions of these ligands led to the determination of the formation constants of the complexes generated according to the folling of \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Hg} \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {\rm Hg}^{{\rm 2 + }} {\rm + 2e}^{\rm - } {\rm,}\,{\rm Hg}^{{\rm 2 + }} {\rm + jL} \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {\rm (HgL}_{\rm j} {\rm)}^{{\rm 2 + }} $$\end{document} In propylene carbonate, the resulting mercuric complexes were stable (log Ks up to 40) mono- and dinuclear species. Their stability depends both on the nature of the heteroatoms and on the size of the macrocycle. For identical ligand sizes, the stability sequence N 〉 S 〉 O was established for mercuric complexes.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140010604
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Emulsifier-free polymerization in aqueous media (1955)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 16 (1955), S. 549-576 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The polymerization in solution of a variety of water-soluble monomers with a variety of water-soluble redox initiators is described and a detailed study is reported on the polymerization, in aqueous solution, of methyl vinyl ketone and of methyl methacrylate under the influence of potassium sulfate-silver nitrate. Keeping the persulfate concentration constant and varying the silver nitrate or, conversely, keeping the silver nitrate constant and varying the persulfate, it is found that, except at very high concentration of catalyst, both the rate of polymerization and the molecular weight of the polymer bear a linear relation to the square root of the catalyst concentration, in harmony with the general theory of catalyzed bulk and emulsion polymerization. The molecular weight of the polymer formed diminishes with increase in the temperature of polymerization. The study of redox polymerization in water, without emulsifier, has been extended to the case of a mixture of a water-soluble and a water-insoluble monomer, and it has been found that copolymerization proceeds at a reasonable rate and frequently forms a stable latex. The copolymerization of styrene and 5 or 10 per cent of its weight of methacrylonitrile in water under the influence of a water-soluble persulfate-bisulfite redox pair has been examined with some closeness. Polymerization is apparently initiated in the aqueous solution, since, contrary to the state of affairs in emulsion polymerization, water-soluble retarders are more effective than oil-soluble ones, when the retarder is added at the outset. If the retarder is added at a later stage of polymerization, oil-soluble reagents are more effective than water-soluble ones. The water-soluble monomer enters into the polymer at a greater rate than the water-insoluble one, but it appears that, even at the earliest stage at which it is practicable to take samples co-polymerization occurs. The influence of catalyst concentration on the rate of polymerization, the molecular weight of the polymer, and the latex particle size was examined.
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1955.120168239
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    Paper (German National Licenses)
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