6,495 research outputs found
Deconfinement from Action Restriction
The effect of restricting the plaquette to be greater than a certain cutoff
value is studied. The action considered is the standard Wilson action with the
addition of a plaquette restriction, which should not affect the continuum
limit of the theory. In this investigation, the strong coupling limit is also
taken. It is found that a deconfining phase transition occurs as the cutoff is
increased, on all lattices studied (up to ). The critical cutoff on the
infinite lattice appears to be around 0.55. For cutoffs above this, a fixed
point behavior is observed in the normalized fourth cumulant of the Polyakov
loop, suggesting the existence of a line of critical points corresponding to a
massless gluon phase, not unlike the situation in compact U(1). The Polyakov
loop susceptibility also appears to be diverging with lattice size at these
cutoffs. A strong finite volume behavior is observed in the pseudo-specific
heat. It is discussed whether these results could still be consistent with the
standard crossover picture which precludes the existence of a deconfining phase
transition on an infinite symmetric lattice.Comment: 4 pages latex, 6 ps figures, uses espcrc2.sty (included). Poster
presented at LATTICE96(topology
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Sedimentation in Meridiani Terrae, Mars, owing to magma-ice interaction when Tharsis arose?
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Fe isotopes in Martian meteorites: role of water and possibility of life on Mars
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Infrared spectroscopy of circumstellar dust: signs of differentiated materials?
Mid-infrared absorption spectra of powdered achondrites are compared with the astronomical spectra of dust around young, evolving stars, to find evidence (or not) of dust formed in collisional cascades of material from planetesimals
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Dust from collisions: mid-infrared absorbance spectroscopy of Martian meteorites
Mid-infrared transmission/absorbance spectra of a representative range of martian meteorites are presented. The data is used for mineralogical bulk studies, but also for the comparison with astronomical dust spectra
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The distribution of asteroids: evidence from Antarctic micrometeorites
The relative abundances of types amongst 550 AMMs are reported. These suggest that C-type asteroids vary from petrologic type 1 to 3.2 and that the majority of S-type asteroids are chondrule-rich
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Mid-infrared spectroscopy of matrix materials from chondrites: first heating experiments
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Infrared spectroscopy of extraterrestrial material: comparison with astronomical spectra of dust
Infrared spectra of components (CAI, matrix etc.) from type 3 carbonacous chondrites (Allende, Ornans, Vigarano) are compared with infrared spectra from astronomical objects (comets, zodiacal light, circumstellar disks and others)
Glucocorticoids for treating paediatric pulmonary hypertension: A novel use for a common medication
AbstractLaboratory investigations have shown the role of inflammation in the pathogenesis of pulmonary hypertension and improvement after anti-inflammatory drugs. Despite these observations, reports on the use of steroids to treat pulmonary hypertension in humans are absent from the literature. In this article, we report the use of glucocorticoids in the treatment of two children with pulmonary hypertension, demonstrating its potential utility.</jats:p
Leading community development for health improvement.
There has been increasing interest in participatory approaches to health promotion. However, there is a lack of consensus on key definitions and limited evidence of the effectiveness of community development in contributing to health and wellbeing.
This study evaluates from the perspective of user participants involved in community development projects in a deprived metropolitan area, the impact of that participation on overall health and wellbeing.
The study highlights the impact of stress, depression, social isolation and the abrasive effects of multiple deprivation on the lives of the user participants.
The main findings showed that a robust Community Development Strategy had been agreed by the partner agencies and this aligned with individual community development projects to address social cohesion and health inequality.
The user participants self-reported being healthier and happier as a consequence of their participation. Participation had a positive psycho-social impact on service users increasing confidence, competence and self-esteem and created a wider social network and a greater social cohesion. For some participants, the additional support offered by involvement promoted better individual functioning. Others adopted a more activist role looking beyond individual needs, taking action to identify and address community needs.
The study recommends action at a national level to promote a co-ordinated response to address the social determinants of health and at a local level for Local Strategic Partnerships to promote sustainable funded community development to address health inequalities and multiple deprivation focused on the wider determinants of health
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