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  • Articles  (219)
  • 2005-2009  (203)
  • 1980-1984  (16)
  • 1850-1859
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (141)
  • Natural Sciences in General  (51)
  • Economics  (27)
Collection
  • Articles  (219)
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Year
Journal
  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 583-588 
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Hydroxyapatite-based materials have been used for dental and biomedical applications.Newly developed synthesis techniques give cause to a broad field in the study of these materials andindustry demands products with better properties day by day. The purpose of the present work wasto evaluate the mechanical properties of hydroxyapatite-based (HAp-based), organic-inorganiccomposites.HAp-based, organic-inorganic composites were obtained by modified gel casting process andorganic molecules in a gelatin solution.HAp samples of different sizes and shapes were obtained with controlled micro and macro porosityand then were immersed into several gelatin solutions with different concentrations.X-ray powder Diffraction (XRD), Infra Red (IR) Spectroscopy and Scanning Electron Microscopy(SEM) techniques were used to analyze samples before and after gel casting process in order toassure that chemical and physical properties remains the same after this process. IR Spectroscopyand SEM techniques were used to characterize samples after the introduction of organic phase inorder to analyze the final morphology of samples. Mechanical characterization was made incompression mode to samples without and with different concentrations of organic phase in order toestablish the optimum conditions in which the highest compressive strength and Young’s modulusis reached
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Berkeley, Calif. : Berkeley Electronic Press (now: De Gruyter)
    Basic income studies 2.2007, 1, art17 
    ISSN: 1932-0183
    Source: Berkeley Electronic Press Academic Journals
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Berkeley, Calif. : Berkeley Electronic Press (now: De Gruyter)
    Basic income studies 1.2006, 1, art17 
    ISSN: 1932-0183
    Source: Berkeley Electronic Press Academic Journals
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Bingley : Emerald
    International journal of contemporary hospitality management 17 (2005), S. 365-371 
    ISSN: 0959-6119
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Purpose - To provide an enhanced understanding of the changing business dynamics resulting from globalization, and offer hospitality managers in emerging locations strategies for success. Design/methodology/approach - The research was based on a descriptive survey conducted among 118 senior level travel executives in 35 countries. Based on the concepts furthered by Thomas L. Friedman, executive insights were gathered on the impact of globalization on business, technology, accounting and finance, psyche, and knowledge flows. Findings - Research findings point out to the evolving business dynamics in a globalized environment requiring strategic operational adjustments by hospitality managers, specially those located in emerging locations. Research limitations/implications - Though the research was conducted across several countries, the respondent number does not merit a solid basis for a generalized conclusion. Furthermore, as English was used in the survey questionnaires, respondent misunderstandings may have occurred. Being an exploratory study, a stronger theoretical foundation in future research will provide added benefit to the academic and business communities. Practical implications - The research points out to the need for greater awareness of the impact of globalization among hospitality managers in emerging locations. Furthermore, strategies need to be fine-tuned in accordance with the evolving nature of globalization. The study identifies salient points that need to be considered. Originality/value - With insights gathered from travel executives from around the world, and about one-quarter of the respondents being directly engaged in hospitality management, strategic approaches presented are valuable to industry practice.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Cambridge : Cambridge University Press
    The @journal of modern African studies 18 (1980), S. 443-468 
    ISSN: 0022-278X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: The constitutional development of Nigeria which started under the British occupation has been marked by two fundamental principles: the decision to set the political evolution of the country on a federal basis, and the effort, far less successful, to integrate the traditional institutions into a modern political system. This second principle will be the subject of this article, which I hope will also shed some light on the complex relationships between tradition and modernity, and thus show the importance of ‘primordial loyalties’ in political life.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 283 (1980), S. 550-551 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The rapid burster was discovered in 1976 by Lewin et al.2 at MIT and is unique in producing 103 X-ray bursts a day in its active periods. These periods occur about every 6 months and last 2-6 weeks3. Liller4, and Kleinmann et al.5 have shown that the source lies in a compact globular cluster, now ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 298 (1982), S. 608-608 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING May and June, 1981, an epidemic outbreak of interstitial pneumonitis occurred in Spain. Over 20,000 people were affected, and nearly five per cent subsequently developed persistent neuro-distrophic- and schlerodermia-like conditions. More than 300 people have died. The disease, at first ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 445.2007, 7129, E17-, (2 S.) 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Ferguson et al. and Zhou and Bai criticize the quality of our nuclear magnetic resonance (NMR) data and atom-by-atom analysis of global 'downhill' folding, also claiming that the data are compatible with two-state folding. Rather than subjectively deciding which curves to ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 442 (2006), S. 317-321 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Protein folding is an inherently complex process involving coordination of the intricate networks of weak interactions that stabilize native three-dimensional structures. In the conventional paradigm, simple protein structures are assumed to fold in an all-or-none process that is inaccessible ...
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  • 10
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Legumes, such as Medicago truncatula, form mutualistic symbiotic relationships with nitrogen-fixing rhizobial bacteria. This occurs within specialized root organs—nodules—that provide the conditions required for nitrogen fixation. A rhizobium-derived signalling molecule, Nod factor, is required ...
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