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Träfflista för sökning "WFRF:(Hale M. L.) srt2:(2005-2009)"

Sökning: WFRF:(Hale M. L.) > (2005-2009)

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  • Edwards, Deidre M., et al. (författare)
  • Anxiolytic Drugs
  • 2008
  • Ingår i: Psychiatry. - Chichester, UK : John Wiley & Sons, Ltd. - 9780470065716 ; , s. 2223-2253
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
    • This chapter provides a brief history of the evolution of medications used to treat anxiety and anxiety disorders, as described in the Diagnostics and Statistical Manual of Mental Disorders (DSM-IV-TR). We also summarize the efficacy and adverse effects data from clinical trials for these medications. Medication classes reviewed include antidepressants, benzodiazepines, beta-blockers, anticonvulsants, and antipsychotics. Treatment outcomes and clinical implications are reviewed for each of the individual medication classes.
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  • Östlund, Fredrik, et al. (författare)
  • Brittle-to-Ductile Transition in Uniaxial Compression of Silicon Pillars at Room Temperature
  • 2009
  • Ingår i: Advanced Functional Materials. - : Wiley. - 1616-301X .- 1616-3028. ; 19:15, s. 2439-2444
  • Tidskriftsartikel (refereegranskat)abstract
    • Robust nanostructures for future devices will depend increasingly on their reliability. While great strides have been achieved for precisely evaluating electronic, magnetic, photonic, elasticity and strength properties, the same levels for fracture resistance have been lacking. Additionally, one of the self-limiting features of materials by computational design is the knowledge that the atomistic potential is an appropriate one. A key property in establishing both of these goals is an experimentally-determined effective surface energy or the work per unit fracture area. The difficulty with this property, which depends on extended defects such as dislocations, is measuring it accurately at the sub micrometer scale in this Full Paper the discovery of an interesting size effect in compression tests on silicon pillars with sub-micrometer diameter is presented: in uniaxial compression tests, pillars having a diameter exceeding a critical value develop cracks, whereas smaller pillars show ductility comparable to that of metals. The critical diameter is between 310 and 400 nm. To explain this transition a model based on dislocation shielding is proposed. For the first time, a quantitative method for evaluating the fracture toughness of such nanostructures is developed. This leads to the ability to propose plausible mechanisms for dislocation-mediated fracture behaviour in such small volumes.
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