1,723 research outputs found
Crystal Distortion and the Two-Channel Kondo Effect
We study a simple model of the two-channel Kondo effect in a distorted
crystal. This model is then used to investigate the interplay of the Kondo and
Jahn-Teller effects, and also the Kondo effect in an impure crystal. We find
that the Jahn-Teller interaction modifies the characteristic energy scale of
the system below which non-Fermi-liquid properties of the model become
apparent. The modified energy scale tends to zero as the limit of a purely
static Jahn-Teller effect is approached. We find also that the non-Fermi-liquid
properties of the quadrupolar Kondo effect are not stable against crystal
distortion caused by impurities.Comment: 11 page
Long-distance Spore Transport: Methods of Measurement, Vertical Spore Profiles and the Detection of Immigrant Spores
RESP-566
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The impact of working outdoors on the therapeutic relationship
Ideas around nature improving wellbeing are strengthening, and an increasing number of therapists are choosing to work outdoors. There is a paucity of research focused on the impact of working therapeutically outdoors. The present study aims to contribute to an emerging theory: How does working outdoors impact the therapeutic relationship? A constructivist grounded theory methodology (Charmaz, 2006) was adopted for this study and 9 semi-structured interviews were conducted with therapists who work outdoors around the UK. The data was analysed in accordance with this methodology. A core research category ‘Constructing the Therapeutic Relationship’ was generated and comprised four categories: Using Nature as a Therapeutic Opportunity, Allowing the Outdoors to Effect Change, Constructing the Therapist Role, and Power dynamics in the Therapeutic Relationship: Outdoors vs indoors. The findings indicate that the therapists use the varied therapeutic opportunities afforded by working in a dynamic environment to enhance the therapeutic relationship. The outdoor environment alters the internal states of the therapists and their clients, and becomes part of the therapeutic relationship by blurring the boundaries between the therapeutic space and the relationship. The outdoors also alters the therapeutic roles and therapists actively reconstruct therapeutic roles to maintain the relationship. Finally working outdoors highlights and begins to balance power dynamics within the relationship. These findings are contextualised with existing research and theories drawn from different disciplines
Number counts and clustering properties of bright Distant Red Galaxies in the UKIDSS Ultra Deep Survey Early Data Release
We describe the number counts and spatial distribution of 239 Distant Red
Galaxies (DRGs), selected from the Early Data Release of the UKIDSS Ultra Deep
Survey. The DRGs are identified by their very red infrared colours with
(J-K)AB>1.3, selected over 0.62 sq degree to a 90% completeness limit of
KAB~20.7. This is the first time a large sample of bright DRGs has been studied
within a contiguous area, and we provide the first measurements of their number
counts and clustering. The population shows strong angular clustering,
intermediate between those of K-selected field galaxies and
optical/infrared-selected Extremely Red Galaxies. Adopting the redshift
distributions determined from other recent studies, we infer a high correlation
length of r0~11 h-1 Mpc. Such strong clustering could imply that our galaxies
are hosted by very massive dark matter halos, consistent with the progenitors
of present-day L>L* elliptical galaxies.Comment: 5 pages, 4 figures, revised version accepted to MNRAS.
Higher-resolution figures available from the authors on reques
Molecular Evolution in Time Dependent Environments
The quasispecies theory is studied for dynamic replication landscapes. A
meaningful asymptotic quasispecies is defined for periodic time dependencies.
The quasispecies' composition is constantly changing over the oscillation
period. The error threshold moves towards the position of the time averaged
landscape for high oscillation frequencies and follows the landscape closely
for low oscillation frequencies.Comment: 5 pages, 3 figures, Latex, uses Springer documentclass llncs.cl
Potent immunogenicity of the B subunits of Escherichia coli heat-labile enterotoxin: receptor binding is essential and induces differential modulation of lymphocyte subsets.
Investigation of a bicyclo[1.1.1]pentane as a phenyl replacement within an LpPLA2 inhibitor
We describe the incorporation of a bicyclo[1.1.1]pentane moiety within two known LpPLA2 inhibitors to act as bioisosteric phenyl replacements. An efficient synthesis to the target compounds was enabled with a dichlorocarbene insertion into a bicyclo[1.1.0]butane system being the key transformation. Potency, physicochemical, and X-ray crystallographic data were obtained to compare the known inhibitors to their bioisosteric counterparts, which showed the isostere was well tolerated and positively impacted on the physicochemical profile
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