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  • Electronic Resource  (41)
  • 2000-2004  (41)
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  • 2001  (41)
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  • Electronic Resource  (41)
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  • 2000-2004  (41)
  • 1995-1999
  • 1945-1949
  • 1900-1904
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  • 1
    Electronic Resource
    Electronic Resource
    Evolution of the dielectric breakdown in Co/Al2O3/Co junctions by annealing (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 586-589 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The temperature and dielectric stability of magnetic tunnel junctions are important requirements for magnetic memory devices and their integration in the semiconductor process technology. We have investigated the changes of the tunneling magnetoresistance (TMR), the barrier properties (height, thickness, and asymmetry) and the dielectric stability upon isochronal annealing up to 410 °C in Co/Al2O3/Co junctions with an artificial antiferromagnet as a pinning layer. Besides a small decrease of the TMR signal after annealing up to 230 °C, a strong decrease between 300 and 350 °C is found. According to Auger and transmission electron microscopy investigations, this decrease is mainly due to interdiffusion of the metallic layers. The dielectric breakdown is characterized by voltage ramp experiments. The size-averaged breakdown voltage improves from 1.35 V for the as prepared junctions to 1.55 V by annealing at 300 °C. At higher temperatures the breakdown voltage decreases strongly to 0.8 V (at 380 °C). Simultaneously, the typical breakdown process changes from few sudden current jumps to a large number of small steps. The breakdown properties are discussed within a statistical model and related to structural changes of the barrier. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1329352
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A Risk Management Procedure for the Washington State Ferries (2001)
    Boston, USA and Oxford, UK : Blackwell Publishers Inc.
    Risk analysis 21 (2001), S. 0 
    Details
    ISSN: 1539-6924
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: The state of Washington operates the largest passenger vessel ferry system in the United States. In part due to the introduction of high-speed ferries, the state of Washington established an independent blue-ribbon panel to assess the adequacy of requirements for passenger and crew safety aboard the Washington state ferries. On July 9, 1998, the Blue Ribbon Panel on Washington State Ferry Safety engaged a consultant team from The George Washington University and Rensselaer Polytechnic Institute/Le Moyne College to assess the adequacy of passenger and crew safety in the Washington state ferry (WSF) system, to evaluate the level of risk present in the WSF system, and to develop recommendations for prioritized risk reduction measures, which, once implemented, can improve the level of safety in the WSF system. The probability of ferry collisions in the WSF system was assessed using a dynamic simulation methodology that extends the scope of available data with expert judgment. The potential consequences of collisions were modeled in order to determine the requirements for onboard and external emergency response procedures and equipment. The methodology was used to evaluate potential risk reduction measures and to make detailed risk management recommendations to the blue-ribbon panel and the Washington State Transportation Commission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/0272-4332.211096
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Oxygen in wound healing: More than a nutrient (2001)
    Oxford, UK : Blackwell Science Inc
    Wound repair and regeneration 9 (2001), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1524-475x.2001.00175.x
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  • 4
    Electronic Resource
    Electronic Resource
    The Need for Strategic Planning in Passive Restoration of Wildlife Populations (2001)
    Boston, MA, USA : Blackwell Science Inc
    Restoration ecology 9 (2001), S. 0 
    Details
    ISSN: 1526-100X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: There are two reasons for strategic planning in passive wildlife restoration: first, to maximize the potential for colonization of restoration sites in challenged landscapes, and second, to maximize the contribution of each restoration project to regional, management area, ecosystem, or target species goals. Landscape configuration and the demographic/dispersal characteristics of target species can govern the level of wildlife response to habitat restoration projects. This is particularly true for fragmented habitats in rapidly suburbanizing areas, where the widely held notion that wildlife can colonize any restored habitat is challenged by barriers to dispersal. Because habitat restoration is a passive means of restoring wildlife populations, equal weight needs to be given to the context (likelihood of site colonization by target species) as well as the content (habitat) of restoration projects. Defining spatial patterns of demography, dispersion, and dispersal allows restorationists to place projects where they can have the greatest impact on the threats and sensitivities of target species, and the greatest contribution to the persistence and/or recovery of populations. Further, it provides a means of evaluating the relative potential worth of different restoration sites. If passive wildlife restoration is to be successful, the constraints to colonization need to be interpreted with regional goals of ecosystem and species management in mind.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1526-100x.2001.009003262.x
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  • 5
    Electronic Resource
    Electronic Resource
    Wound epithelialization deficits in the transforming growth factor-α knockout mouse (2001)
    Oxford, UK : Blackwell Science, Ltd.
    Wound repair and regeneration 9 (2001), S. 0 
    Details
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In vitro, transforming growth factor-α is an important factor controlling epithelial cell proliferation and migration. However, the transforming growth factor-α knockout mouse has shown no wound epithelialization defect in tail amputation and full-thickness back wounds. To resolve this disparity, we combined a full-thickness head wound and a partial-thickness ear wound on the transforming growth factor-α knockout mouse for analysis of wound epithelialization with or without granulation tissue formation. Three-millimeter ear wounds were made on the transforming growth factor-α knockout and heterozygous control mice. Full-thickness head wounds were made using a 6-mm trephine on the crown of the skull. In the ear model, transforming growth factor-α knockout mice had significantly larger epithelial gaps versus control at post-operative day 3 and 5. Epithelial thickness at the wound edge of transforming growth factor-α deficient mice was also depressed at post-operative day 3 and post-operative day 5 compared to control mice. On post-operative day 8, most wounds of both groups were epithelialized. In contrast, no difference in epithelial gap or new granulation tissue was found in the head model. The data support the concept that transforming growth factor-α plays a significant early role in wound epithelialization in vivo but its deficit is compensated if accompanied by granulation tissue formation. The data further show the importance of appropriate wound models to address the role of vulnerary factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1524-475x.2001.00386.x
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  • 6
    Electronic Resource
    Electronic Resource
    Carotid Stenting: Which Stent for Which Lesion? (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of interventional cardiology 14 (2001), S. 0 
    Details
    ISSN: 1540-8183
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Dedicated catheter and stent systems for use in the carotid circulation have only been developed recently. Almost exclusively, self-expandable metallic stents are being used. Longitudinal flexibility, contourability of the luminal configuration, sufficient radial resistive force, narrow meshwork for sealing of the diseased vessel wall, low profile of the constraint stent, and compatibility of the devices with routine angioplasty techniques are the premier requirements. Most of the current experience is based on the longitudinal wire mesh design (Carotid Wallstent). The narrow meshwork has excellent sealing capacity but the inherent (yet manageable) problem of foreshortening with expansion needs attention. The segmented ring designs of the more recent Nitinol stents permit more precise positioning and contouring of the luminal surface, yet their capacity to seal a complex or thrombotic lesion and their clinical safety needs further evaluation. As more distinct features of dedicated carotid stents are being developed and as their differential importance gets recognized, a more meaningful and individual stent selection for the carotid anatomy may further improve clinical outcome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8183.2001.tb00380.x
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  • 7
    Electronic Resource
    Electronic Resource
    Hexagonal voids and the formation of micropipes during SiC sublimation growth (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 4625-4630 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Hexagonal voids observed in sublimation grown SiC boules were examined using optical microscopy, atomic force microscopy (AFM), scanning electron microscopy, KOH etching, and synchrotron white-beam x-ray topography. Voids formed at imperfections in the attachment layer between the seed and crucible cap. They are platelet-like in shape with lateral sizes between 50 and 750 μm and thickness along the c axis between 5 and 25 μm. Growth steps were observed on the void facets closest to the seed and evaporation steps were observed on void facets closest to the growth surface, providing evidence for void movement during crystal growth. AFM images revealed that growth steps nucleate at a void sidewall, flow across the bottom of the void, and terminate in a trench-like depression. KOH etching of waters between the void and seed revealed dislocations lining up along the trace of the void path, often with higher densities corresponding to the location of the trench. X-ray topographs showed a random distribution of screw dislocations in the crystal volume above the void, and an absence of screw dislocations in the volume directly below the void. Hollow-core superscrew dislocations, called micropipes, were found at the corners of the void trace. Image forces associated with growth steps and void sidewalls are used to explain the formation of micropipes. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1355716
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  • 8
    Electronic Resource
    Electronic Resource
    The Best and the Worst of Us? (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical psychology 8 (2001), S. 0 
    Details
    ISSN: 1468-2850
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: Wood, Nezworski, Garb, and Lilienfeld provide a compelling critique of the norms developed by Exner for the Rorschach Comprehensive System. There does appear to be a systematic error that results in clinicians and researchers identifying pathology that may not in fact be present. Wood and his colleagues recommend that the Comprehensive System not be used in clinical or forensic work. The Rorschach is prone to excessive interpretation and should perhaps not have an appreciable or significant impact on the resolution of legal disputes. However, even Wood and Lilienfeld previously concluded that valid information can be obtained within a Rorschach protocol. The dispute over the Rorschach may be a flashpoint of a wider and more fundamental dispute within the profession.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1093/clipsy.8.3.374
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  • 9
    Electronic Resource
    Electronic Resource
    Estimating Amenity Benefits of Coastal Farmland (2001)
    Boston, USA and Oxford, UK : Blackwell Publishers Inc.
    Growth and change 32 (2001), S. 0 
    Details
    ISSN: 1468-2257
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Economics
    Notes: This paper investigates differences in non-market farmland amenity values estimated using distinct methodologies, with a focus on the potential causes and policy implications. The paper compares farmland amenity values generated by a hedonic property value model and a contingent choice model, both estimated from data collected in the Peconic Estuary System of Suffolk County, NY. The analysis demonstrates that a combination of non-market valuation methodologies can provide policy insights not otherwise available to those relying on any single approach, and illustrates types of information that may be obscured by methodologies used in isolation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/0017-4815.00161
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  • 10
    Electronic Resource
    Electronic Resource
    What Can Be Learned From Taxometric Analyses? (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical psychology 8 (2001), S. 0 
    Details
    ISSN: 1468-2850
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: Taxometric analyses can be useful in indicating that a particular set of beliefs, attitudes, feelings, or behaviors have coherence as manifest class taxa. However, there is little reason to believe that taxometric analyses identify latent class taxa with specific etiologies, pathologies, or treatment implications. Taxometric analyses can, in fact, be quite misleading if their results are taken too seriously. Mental disorders are most likely the result of polygenetic dispositions and multifactorial etiologies. The optimal understanding of the etiology, pathology, and treatment of mental disorders is more likely to be multifactorial than taxonic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1093/clipsy.8.4.528
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