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  • Articles  (30)
  • Chemistry  (19)
  • Deutschland  (8)
  • J61  (5)
  • Polymer and Materials Science  (5)
  • 1
    Publication Date: 2018-12-06
    Description: The economic potential of ethnic and cultural diversity is often underestimated. This paper summarizes a number of recent studies which show that 'soft' factors such as attitudes, perceptions and identities - and in particular ethnic identities - significantly affect economic outcomes. More specifically, the studies analyze the process of cultural integration over migrant generations as well as the process of job search and labor market reintegration of the unemployed. The economy can thus gain productivity and efficiency by recognizing and incorporating such multi-ethnic factors. Cultural assimilation that goes along with a loss of migrants' own cultural heritage does not appear to be the sole or dominant strategy of an economically successful integration. To tap the full potential of ethnic and cultural diversity, an increased cultural and ethnic open-mindedness of the native population is desirable.
    Keywords: F22 ; J15 ; J61 ; ddc:330 ; Einwanderer ; multikulturelle Gesellschaft ; ethnische Gruppe ; Minderheiten ; nationale Identität ; Berufserfolg ; Arbeitslose ; berufliche Reintegration ; interkulturelle Faktoren ; kulturelle Faktoren ; berufliche Integration ; Inländer ; interkulturelle Kompetenz ; Schlüsselqualifikation ; soziale Qualifikation ; soziale Integration ; kulturelle Identität ; kulturelles Kapital ; Assimilation ; Segregation ; Marginalität ; ökonomische Faktoren
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: German
    Type: doc-type:article
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  • 2
    Publication Date: 2018-09-10
    Description: Die Digitalisierung von Wirtschaft und Gesellschaft bleibt nicht ohne Wirkung auf Arbeitsmarkt und Wachstum. Welche Effekte sind aber tatsächlich von dieser "digitalen Revolution" für wen und wo zu erwarten? Die Autoren bieten einen Überblick über den aktuellen Forschungsstand und beleuchten Studienergebnisse. Sie erwarten deutlich positive Wachstumsimpulse durch die Umsetzung von Industrie 4.0. Deren Beschäftigungswirkung ist allerdings ambivalent. Politischer Handlungsbedarf besteht sowohl in Hinblick auf Bildung und Flexibilisierung des Arbeitsmarktes als auch auf die Förderung einer intensiveren Nutzung bereits bestehender Breitbandinfrastruktur.
    Description: The ongoing processes of digitalisation in economy and society have certainly important implications, not only for economic growth but also for the future labour market. But, what are the actual effects of this "Digital Revolution"? Who will be the winners and who will be the losers? This article reviews the current empirical literature and draws relevant policy conclusions. While the growth effects will be substantial, the labour market effects of ICT and broadband technologies and their linkage with industrial production via the "internet of things" are likely to be ambivalent. The authors point to the need for political action with respect to labour market institutions that support workers in adjusting to the rapidly changing work environment in a digital world, and measures designed to reduce the skill gap between "digital natives" and "digital illiterates". They also identify the need to help increase adoption and use intensity of the new technologies, rather than solely investing in broadband infrastructure.
    Keywords: O33 ; J23 ; L25 ; ddc:330 ; Technischer Fortschritt ; Computerunterstützung ; Industrie 4.0 ; Beschäftigungseffekt ; Breitbandkommunikation ; Inhaltsanalyse ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: German
    Type: doc-type:article
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  • 3
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigations into the electrolytic-potentiostatic etching of stainless steels in 10 n NaOH, using a coulometerCurrent density/potential characteristics can only provide qualitative indications concerning the phenomena encountered with potentiostatic etching in 10 n NaOH. The process is best carried out in the trans-passive zone. Identification is based, not on the selective dissolution of certain standard components, but on the interference colours which can be observed as a result of the formation of cover layers of different thickness. The charge density/time characteristics also permit quantitative indications of the different phases. Current density/time curves permit a clarification of the mechanism govering the formation of cover layers. A ferritic steel (28 pC Cr) and a NiCr alloy (45 pC Cr) were found to follow a cubic law of growth, whilst CrNi steel 18-8 is initially governed by an approximately logarithmic law, followed by a zone extending over several hours where the growth begins to follow a parabolic law.
    Notes: Stromdichte-Potential-Kurven ermöglichen nur qualitative Aussagen über die Vorgänge beim potentiostatischen Ätzen in 10 n NaOH. Am günstigsten ist Ätzen im Transpassivbereich. Die Identifizierung erfolgt dabei nicht durch selektive Auflösung bestimmter Gefügebestandteile, sondern aufgrund der Interferenzfarben, die infolge der Bildung unterschiedlich starker Deckschichten zu beobachten sind. Die Ladungsdichte-Zeit-Kurven ermöglichen auch Aussagen über die Mengen der einzelnen Phasen. Stromdichte-Zeit-Kurven ermöglichen eine Aufklärung des Deckschichtbildungsmechanismus. Für einen ferritischen Stahl (28% Cr) und eine NiCr-Legierung mit 45% Cr gilt ein kubisches Wachstumsgesetz, während für CrNi-Stahl 18-8 zunächst ein annähernd logarithmisches Gesetz gilt, an das sich ein mehrstündiger Bereich anschließt, in dem übergang zu einem parabolischen Schichtwachstum erfolgt.
    Additional Material: 24 Ill.
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  • 5
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 40 (1904), S. 385-399 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
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  • 7
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A specific and sensitive gas chromatographic/mass spectrometric method was developed and validated for the determination of the antidepressant levoprotiline in blood, plasma and urine and the simultaneous determination of levoprotiline and its desmethyl metabolite in urine. Deuterium-labelled analogues were used as internal standards. The compounds were isolated from the biological fluids by liquid-liquid extraction under basic conditions. Following derivatization with perfluoropropionic anhydride, the samples were analysed by capillary column gas chroma-tography/electron impact mass spectrometry with selected ion monitoring. The analysis of spiked samples demonstrated the high accuracy and precision of the method. Blood concentrations of levoprotiline down to 0.7 nmol I-1 (1 ml used for analysis) could be quantified with a coefficient of variation of 10% or less. The method is suitable for use in pharmacokinetic and bioavailability studies of levoprotiline in humans.
    Additional Material: 6 Ill.
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  • 8
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei Umsetzungen von 1.2-Dibrom-cyclohepten (1) mit Magnesium bzw. Alkaliamalgamen erhielt man neben Trispentamethylenbenol (2) ein Hexameres des Cycloheptins (3a), das sich durch leichte Umlagerung zu einem höher schmelzenden Isomeren 3b auszeichnete. Für die beiden Kohlenwasserstoffe werden die Strukturen A oder B vorgeschlagen. Das Hexamere 3a ließ sich auch durch Bleitetraacetat-Oxydation des Aminotriazols 6 darstellen, wenn man mit Pyridin die Addition der bei der Reaktion freiwerdenden Essigsaure an die Dreifach-bindung verhinderte. Außerdem ermöglichte die Bleitetraacetat-Oxydation Aussagen über die Lebensdauer des Cycloheptins: In verdünnter Lösung ist es mehrere Stunden haltbar und übertrifft damit die Beständigkeit des Sechsringhomologen bei weitem.
    Additional Material: 2 Tab.
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  • 9
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1987 (1987), S. 249-258 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Building Units of Oligosaccharides, LXXVIII. - Synthesis of KDO-Containing Lipid A AnaloguesThe non-neighbouring group supported glycosidation of 12 with the suitably protected glycosyl bromide 9 of 2-azido-2-deoxy-D-glucose leads - in the presence of a heterogeneous silver catalyst - to the formation of the β-(1→6)-glycosidically linked disaccharide 14. It consists of two 2-azido-2-deoxy-D-glucose units. Partial deblocking of 14 furnishes 15. On glycosidation with KDO bromide this compound yields the trisaccharide 16, which contains a KDO unit in an α-(2→6) ketosidic bond. Reduction of the two azido groups followed by amidation with (R)-3-hydroxymyristic acid and further deblocking generates the trisaccharide α-KDO-(2→6)-β-D-GlcA-(1→6)-D-GlcA 20 with two 3-hydroxy fatty acid residues in an amidic linkage.
    Notes: Die Umsetzung des Pyranosylbromids 9 der 2-Azido-2-desoxy-D-glucose mit dem Akzeptor 12 führt bei Gegenwart eines heterogenen Silberkatalysators ohne Nachbargruppenbeteiligung unter Inversion zum β-(1→6)-glycosidisch verknüpften Disaccharid 14 aus zwei 2-Azido-2-desoxy-D-glucose-Einheiten. Nach partieller Entblockierung zu 15 ist die Anknüpfung eines KDO-Restes unter Bildung einer α-(2→6)-ketosidischen Bindung zum Trisaccharid 16 möglich. Nach Reduktion der Azidogruppen und Anknüpfung von (R)-3-Hydroxymyristinsäure-Resten gelangt man nach Entblockierung zum Trisaccharid α-KDO-(2→6)-β-D-GlcA-(1→6)-D-GlcA 20, das amidartig zwei 3-Hydroxyfettsäure-Reste gebunden enthält.
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