780 research outputs found
Psychiatry and the New Criminal Procedure Law: The Problem of Communication Between Courts and Psychiatric Examiners
Psychiatry and the New Criminal Procedure Law: The Problem of Communication Between Courts and Psychiatric Examiners
Patient Violence in Psychiatric Residency: A Nationwide Survey
Twenty percent of current psychiatric residents (N = 517) responded to a nationwide survey about patient violence. Thirty six percent of responders reported 630 assaults, with 74% of residents receiving 1,853 threats. While age and training level were correlated to each other (r = .35, p \u3c .001), no correlations were found between gender, age, height, weight number of hours of violence management training and the occurrence of assault and threat. A smaller proportion of first year residents reported assaults and threats, and more males (79%) had been threatened (females = 69%). Sources of study bias are identified and future research directions are outlined
Constructing Gravitational Dimensions
It would be extremely useful to know whether a particular low energy
effective theory might have come from a compactification of a higher
dimensional space. Here, this problem is approached from the ground up by
considering theories with multiple interacting massive gravitons. It is
actually very difficult to construct discrete gravitational dimensions which
have a local continuum limit. In fact, any model with only nearest neighbor
interactions is doomed. If we could find a non-linear extension for the
Fierz-Pauli Lagrangian for a graviton of mass mg which does not break down
until the scale Lambda_2=(mg Mpl)^(1/2), this could be used to construct a
large class of models whose continuum limit is local in the extra dimension.
But this is shown to be impossible: a theory with a single graviton must break
down by Lambda_3 = (mg^2 Mpl)^(1/3). Next, we look at how the discretization
prescribed by the truncation of the KK tower of an honest extra diemsinon
rasies the scale of strong coupling. It dictates an intricate set of
interactions among various fields which conspire to soften the strongest
scattering amplitudes and allow for a local continuum limit. A number of
canditate symmetries associated with locality in the discretized dimension are
also discussed.Comment: 21 pages, 6 diagrams, 1 figur
Discrete Gravitational Dimensions
We study the physics of a single discrete gravitational extra dimension using
the effective field theory for massive gravitons. We first consider a minimal
discretization with 4D gravitons on the sites and nearest neighbor hopping
terms. At the linear level, 5D continuum physics is recovered correctly, but at
the non-linear level the theory becomes highly non-local in the discrete
dimension. There is a peculiar UV/IR connection, where the scale of strong
interactions at high energies is related to the radius of the dimension. These
new effects formally vanish in the limit of zero lattice spacing, but do not do
so quickly enough to reproduce the continuum physics consistently in an
effective field theory up to the 5D Planck scale. Nevertheless, this model does
make sense as an effective theory up to energies parametrically higher than the
compactification scale. In order to have a discrete theory that appears local
in the continuum limit, the lattice action must have interactions between
distant sites. We speculate on the relevance of these observations to the
construction of finite discrete theories of gravity in four dimensions.Comment: 5 pages, 4 diagrams. Important typos in some equations corrected;
conclusion s unchange
Massive Supergravity and Deconstruction
We present a simple superfield Lagrangian for massive supergravity. It
comprises the minimal supergravity Lagrangian with interactions as well as mass
terms for the metric superfield and the chiral compensator. This is the natural
generalization of the Fierz-Pauli Lagrangian for massive gravity which
comprises mass terms for the metric and its trace. We show that the on-shell
bosonic and fermionic fields are degenerate and have the appropriate spins: 2,
3/2, 3/2 and 1. We then study this interacting Lagrangian using goldstone
superfields. We find that a chiral multiplet of goldstones gets a kinetic term
through mixing, just as the scalar goldstone does in the non-supersymmetric
case. This produces Planck scale (Mpl) interactions with matter and all the
discontinuities and unitarity bounds associated with massive gravity. In
particular, the scale of strong coupling is (Mpl m^4)^1/5, where m is the
multiplet's mass. Next, we consider applications of massive supergravity to
deconstruction. We estimate various quantum effects which generate non-local
operators in theory space. As an example, we show that the single massive
supergravity multiplet in a 2-site model can serve the function of an extra
dimension in anomaly mediation.Comment: 24 pages, 2 figures, some color. Typos fixed and refs added in v
THE TOXICITY AND MUSCULAR EFFECT O d-TUBOCURARINE COMBINED WITH -ERYTHROIDINE, MYANESIN OR EVIPAL*
Tryptase Levels as an Indicator of Mast-Cell Activation in Systemic Anaphylaxis and Mastocytosis
Abstract
Better methods are needed to assess mastcell activation In vivo and to distinguish the activation of mast cells from that of basophils. Tryptase, a neutral protease selectively concentrated in the secretory granules of human mast cells (but not basophils), is released by mast cells together with histamine and serves as a marker of mast-cell activation.
In 17 patients with systemic mastocytosis, concentrations of tryptase in plasma were linearly related to those of histamine (P\u3c0.01). Eleven of the 17 patients had tryptase levels of 4 to 88 ng per milliliter, indicating ongoing mast-cell activation. In each of six patients who experienced corresponding anaphylactic reactions after penicillin, aspirin, or melon ingestion, a wasp sting, exercise, or antilymphocyte globulin injection, tryptase levels in serum ranged from 9 to 75 ng per milliliter, indicating mast-cell activation during each of these events. In contrast, serum tryptase levels were less than 5 ng per milliliter in all patients presenting with myocardial disease (n = 8, 6 with hypotension) or sepsis (n = 6, 3 with hypotension) and in the controls (n = 20). One patient had a myocardial infarction after anaphylaxis in response to a wasp sting and an elevated tryptase level of 25 ng per milliliter. Thus, the plasma or serum tryptase level is a diagnostic correlate of mast-cell-related events. (N Engl J Med 1987; 316: 1622–6.
Locally Localized Gravity Models in Higher Dimensions
We explore the possibility of generalizing the locally localized gravity
model in five space-time dimensions to arbitrary higher dimensions. In a
space-time with negative cosmological constant, there are essentially two kinds
of higher-dimensional cousins which not only take an analytic form but also are
free from the naked curvature singularity in a whole bulk space-time. One
cousin is a trivial extension of five-dimensional model, while the other one is
in essence in higher dimensions. One interesting observation is that in the
latter model, only anti-de Sitter () brane is physically meaningful
whereas de Sitter () and Minkowski () branes are dismissed.
Moreover, for brane in the latter model, we study the property of
localization of various bulk fields on a single brane. In particular, it is
shown that the presence of the brane cosmological constant enables bulk gauge
field and massless fermions to confine to the brane only by a gravitational
interaction. We find a novel relation between mass of brane gauge field and the
brane cosmological constant.Comment: 20 pages, LaTex 2e, revised version (to appear in Phys. Rev. D
Towards the deconstruction of M-theory
We argue that there is an equivalence of M-theory on T^3 \times A_{N-1} with
a four-dimensional non-supersymmetric quiver gauge theory on the Higgs branch.
The quiver theory in question has gauge group SU(N)^{N_4N_6N_8} and is
considered in a strong coupling and large N_{4,6,8} limit. We provide field-
and string-theoretical evidence for the equivalence making use of the
deconstruction technique. In particular, we find wrapped M2-branes in the mass
spectrum of the quiver theory at low energies.Comment: LaTeX, 15 pages, 4 figures, added reference
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