1,042 research outputs found
Donor and surgical risk factors for primary graft failure following Descemet’s stripping automated endothelial keratoplasty in Asian eyes
Clinical Ophthalmology511503-150
Endothelial cell counts after Descemet’s stripping automated endothelial keratoplasty versus penetrating keratoplasty in Asian eyes
10.2147/OPTH.S26343Clinical Ophthalmology61537-54
Health-state utilities in a prisoner population : a cross-sectional survey
Background: Health-state utilities for prisoners have not been described.
Methods: We used data from a 1996 cross-sectional survey of Australian prisoners (n = 734).
Respondent-level SF-36 data was transformed into utility scores by both the SF-6D and Nichol's
method. Socio-demographic and clinical predictors of SF-6D utility were assessed in univariate
analyses and a multivariate general linear model.
Results: The overall mean SF-6D utility was 0.725 (SD 0.119). When subdivided by various medical
conditions, prisoner SF-6D utilities ranged from 0.620 for angina to 0.764 for those with none/mild
depressive symptoms. Utilities derived by the Nichol's method were higher than SF-6D scores,
often by more than 0.1. In multivariate analysis, significant independent predictors of worse utility
included female gender, increasing age, increasing number of comorbidities and more severe
depressive symptoms.
Conclusion: The utilities presented may prove useful for future economic and decision models
evaluating prison-based health programs
Atom-by-atom extraction using scanning tunneling microscope tip-cluster interaction
We investigate atomistic details of a single atom extraction process realized
by using scanning tunneling microscope (STM) tip-cluster interaction on a
Ag(111) surface at 6 K. Single atoms are extracted from a silver cluster one
atom at a time using small tunneling biases less than 35 mV and a threshold
tunneling resistance of 47 kOhm. A combination of total energy calculations and
molecular dynamics simulations shows a lowering of the atom extraction barrier
upon approaching the tip to the cluster. Thus, a mere tuning of the proximity
between the tip and the cluster governs the extraction process and is
sufficient to extract an atom. The atomically precise control and
reproducibility of the process are demonstrated by repeatedly extracting single
atoms from a silver cluster on an atom-by-atom basis
“The Neuroscience of Responsibility”—Workshop Report
This is a report on the 3-day workshop “The Neuroscience of Responsibility” that was held in the Philosophy Department at Delft University of Technology in The Netherlands during February 11th–13th, 2010. The workshop had 25 participants from The Netherlands, Germany, Italy, UK, USA, Canada and Australia, with expertise in philosophy, neuroscience, psychology, psychiatry and law. Its aim was to identify current trends in neurolaw research related specifically to the topic of responsibility, and to foster international collaborative research on this topic. The workshop agenda was constructed by the participants at the start of each day by surveying the topics of greatest interest and relevance to participants. In what follows, we summarize (1) the questions which participants identified as most important for future research in this field, (2) the most prominent themes that emerged from the discussions, and (3) the two main international collaborative research project plans that came out of this meeting
Legal coercion, respect & reason-responsive agency
Legal coercion seems morally problematic because it is susceptible to the Hegelian objection that it fails to respect individuals in a way that is ‘due to them as men’. But in what sense does legal coercion fail to do so? And what are the grounds for this requirement to respect? This paper is an attempt to answer these questions. It argues that (a) legal coercion fails to respect individuals as reason-responsive agents; and (b) individuals ought to be respected as such in virtue of the fact that they are human beings. Thus it is in this sense that legal coercion fails to treat individuals with the kind of respect ‘due to them as men’.The Leverhulme Trust (ECF-2012-032); AHRC (AH/H015655/1
Manipulating Kondo Temperature via Single Molecule Switching
Two conformations of isolated single TBrPP-Co molecules on a Cu(111) surface
are switched by applying +2.2 V voltage pulses from a scanning tunneling
microscope tip at 4.6 K. The TBrPP-Co has a spin-active cobalt atom caged at
its center and the interaction between the spin of this cobalt atom and free
electrons from the Cu(111) substrate can cause a Kondo resonance. Tunneling
spectroscopy data reveal that switching from the saddle to a planar molecular
conformation enhances spin-electron coupling, which increases the associated
Kondo temperature from 130 K to 170 K. This result demonstrates that the Kondo
temperature can be manipulated just by changing molecular conformation without
altering chemical composition of the molecule.Comment: To appear in Nano Lett (2006
Understanding atom movement during lateral manipulation with the STM tip using a simple simulation method
Kühnle A, Meyer G, Hla SW, Rieder K-H. Understanding atom movement during lateral manipulation with the STM tip using a simple simulation method. Surface Science. 2002;499(1):15-23.We report on a fast simulation method to investigate the movement of an atom induced by the tip during lateral manipulation with a scanning tunneling microscope. The simulation is based on a model assuming the atom moving in the combined potential of tip and surface. The pathway of the tip is subdivided in small steps, and the atomic position for each step is calculated by an iterative algorithm searching for the closest energetic minimum. The method is demonstrated for manipulation on the (111) surface of an fcc metal. Our model calculations predict which energetic minima of the surface are attained by the atom during manipulation. The details of the modelled manipulation curves allow a precise description of the atomic pathway in dependence on manipulation direction and positioning of the tip relative to the atom. Furthermore, the simulation predicts a transition from the so-called pulling to sliding manipulation mode upon reducing tip-surface distance, well in agreement with general experimental observations. To test our algorithm we present experimental results for the manipulation of iodine on Cu(I 11) along the [211] direction and compare them to simulated manipulation curves. The comparison allows for a complete understanding of all details in atomic movements during manipulation along a complicated path. (C) 2001 Published by Elsevier Science B.V
- …