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  • 1
    Electronic Resource
    Electronic Resource
    Photocycloadducts of dimethylmaleic anhydride with unsaturated acids and esters (1988)
    s.l. : American Chemical Society
    The @journal of organic chemistry 53 (1988), S. 2624-2629 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00246a045
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Impedance and modulus spectroscopy of semiconducting BaTiO3 showing positive temperature coefficient of resistance (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 3850-3856 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Polycrystalline barium titanate that has been doped to give a positive temperature coefficient of resistance (PTCR) effect is an inhomogeneous material electrically. Analysis of ac impedance data using the complex impedance plane representation gives the dc resistance of PTCR ceramics. By additional use of the complex electric modulus formalism to analyze the same data, the inhomogeneous nature of the ceramics may be probed. This reveals the presence of two, sometimes three elements in the equivalent circuit. Grain-boundary and bulk effects may be distinguished from capacitance data: grain-boundary effects have temperature-independent capacitances, whereas bulk effects show a capacitance maximum at the Curie point and Curie–Weiss behavior above the Curie point. Both grain-boundary and bulk effects appear to contribute to the PTCR effect. These results reveal limitations in current theories of the PTCR effect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344049
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  • 3
    Electronic Resource
    Electronic Resource
    Customer-supplier relations and the diffusion of employee relations changes (1996)
    Bradford : Emerald
    Employee relations 18 (1996), S. 9-19 
    Details
    ISSN: 0142-5455
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Describes the utility of supply chain partnerships as a mechanism for the diffusion of change in employee relations. Uses case study and survey evidence to explain the means by which this can be achieved. Examines data relating to both customer and supplier organizations in the manufacturing sector. Concludes that the customer-supplier relationship can act as an agent of change in human resource management, particularly as they do not need to be artificially created, and can reach "peripheral" as well as "core" firms. Suggests that the local economic development agencies may be able to encourage the formation of networks of organizations in a particular industry and promote the spread of innovations in employee relations in this way.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01425459610110209
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Elastic scattering of20Ne on24Mg (1983)
    Springer
    The European physical journal 311 (1983), S. 297-302 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Elastic scattering of20Ne on24Mg was studied at an incident20Ne energy of 40 MeV. Scattered20Ne and24Mg nuclei were observed in coincidence with a standard surface barrier and a position sensitive detector. The measured angular distribution shows periodic oscillations which are identified with the24Mg(20Ne,24Mg)20Ne reaction. Taking interference between elastic scattering and transfer into account, anα-spectroscopic factor ofS=0.08±0.02 was deduced from the amplitude of the oscillations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415684
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  • 5
    Electronic Resource
    Electronic Resource
    The anatomy of pain sensibility (1953)
    Springer
    Journal of neural transmission 7 (1953), S. 135-146 
    Details
    ISSN: 1435-1463
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01227053
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Production of superoxide by neutrophils (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 61-62 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Oxygen uptake by neutrophils has been stimulated by particulate serum-treated-zymosan (STZ) and soluble N-formylmethionyl-leucyl-phenylalanine (FMLP) in the presence and absence of the superoxide radical scavenger, cytochrome C. Results indicate that FMLP may stimulate neutrophils to produce superoxide but that STZ may not.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01960628
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  • 7
    Electronic Resource
    Electronic Resource
    Yeast aging research: recent advances and medical relevance (1999)
    Springer
    Cellular and molecular life sciences 56 (1999), S. 807-816 
    Details
    ISSN: 1420-9071
    Keywords: Key words. Yeast; aging; senescence; helicase; silencing; nucleolus; metabolism; retrograde signaling.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. The molecular mechanisms of aging are most fully understood for the budding yeast Saccharomyces cerevisiae. Recent advances in our understanding of aging in this organism have enabled researchers to answer some fundamental questions about the aging process. Is aging due to a multitude of ‘mechanisms’ or can there be a key few? Can we design single-gene mutations that will prolong life? Can we prolong life whilst maintaining health and fecundity? The various contributing factors to yeast longevity, uncovered thus far, fall into three classes: DNA metabolism, heterochromatin, and metabolic activity. However, these separate classes may actually represent different aspects of the same aging mechanism based on genome stability. This review examines the recent advances in our understanding of yeast aging and discusses their relevance, if any, to the human condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000180050027
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Scanned image microscopy (1980)
    [s.l.] : Nature Publishing Group
    Nature 287 (1980), S. 580-582 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A recent conference* showed that new types of scanning microscope which promise unique imaging capabilities are rapidly being developed. As well as improved optical microscopes, X rays and acoustic waves are being used for high resolution scanned imaging and energy conversion techniques are ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/287580a0
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Gastrointestinal permeability following cardiopulmonary bypass: a randomised study comparing the effects of dopamine and dopexamine (1997)
    Springer
    Intensive care medicine 23 (1997), S. 510-516 
    Details
    ISSN: 1432-1238
    Keywords: Key words Cardiopulmonary bypass ; Gastrointestinal permeability ; Dopexamine ; Dopamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: To compare the effects of dopexamine and dopamine on the mucosal permeability of the gastrointestinal tract (GIT). Design: Prospective, randomised clinical trial. Setting: Intensive care unit of a postgraduate teaching hospital, London, England. Patients: Thirty patients undergoing elective surgery involving cardiopulmonary bypass, performed by a single surgeon. Interventions: Patients were randomly assigned to receive either dopexamine 2.0 μg/kg per min or dopamine 2.5 μg/kg per min for the duration of the study period. Measurements and main results: Hemodynamic parameters and gastric intramucosal pH (pHi) were measured at intervals throughout the study. GIT permeability was measured once, post-operatively, using the ratio of absorbed lactulose to L-rhamnose. The groups were similar with respect to demographics, pre- and post-operative risk factors. The lactulose/rhamnose ratio was (mean ± SEM) 0.44 ± 0.10 in the dopexamine group vs 0.65 ± 0.08 in that receiving dopamine (p 〈 0.05). The dopexamine group had a significantly higher oxygen delivery preoperatively (479.5 ± 32.0 ml/min per m2 vs 344.4 ± 23.9 ml/min per m2 for dopamine, p 〈 0.01), but no other significant differences emerged between the groups. Conclusions: Compared to dopamine, dopexamine reduces GIT permeability following surgery involving cardiopulmonary bypass. The mechanism of this effect remains unclear.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001340050366
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  • 10
    Electronic Resource
    Electronic Resource
    Interior imaging using spatial frequency sampling (1981)
    Springer
    Journal of nondestructive evaluation 2 (1981), S. 203-207 
    Details
    ISSN: 1573-4862
    Keywords: ultrasonics ; synthetic aperture ; spatial frequency ; interior imaging ; acoustic microscopy ; defect detection ; NDE
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: Abstract A new acoustic synthetic aperture geometry is demonstrated in which the image field is sampled in the spatial frequency domain. This means the sampled field is recorded in a particularly convenient form for presentation to the back propagation algorithms used to reconstruct the field at the object plane. The method has applications in interior visualization. It is difficult to image the interior of solid objects using lens based imaging systems because a different lens geometry must be used for each distinct object material. The system presented here overcomes such problems since both the angular variation of the transmission coefficient at the object-water interface and the aberrations introduced by the velocity mismatch at the object surface may be readily compensated for in the back propagation routine. Experimental results are presented illustrating the detection of four half wavelength diameter defects, spaced by three wavelengths, at a depth of eight wavelengths below the surface of an aluminum block.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00570732
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