1,108 research outputs found
Penicillin Allergy Assessment and Skin Testing in the Outpatient Setting
Penicillin allergies are among of the most commonly reported allergies, yet only 10% of these patients are truly allergic. This leads to potential inadvertent negative consequences for patients and makes treatment decisions challenging for clinicians. Thus, allergy assessment and penicillin skin testing (PST) are important management strategies to reconcile and clarify labeled penicillin allergies. While PST is more common in the inpatient setting where the results will immediately impact antibiotic management, this process is becoming of increasing importance in the outpatient setting. PST in the outpatient setting allows clinicians to proactively de-label and educate patients accordingly so beta-lactam antibiotics may be appropriately prescribed when necessary for future infections. While allergists have primarily been responsible for PST in the outpatient setting, there is an increasing role for pharmacist involvement in the process. This review highlights the importance of penicillin allergy assessments, considerations for PST in the outpatient setting, education and advocacy for patients and clinicians, and the pharmacist’s role in outpatient PST
Determinación espectroquÃmica de arsénico en latones tipo almirantazgo
Se analizaron tubos de latones por método quÃmico para seleccionar aquéllos que por su composición y contenido en arsénico podÃan ser usados como patrones espectrográficos.
Para el análisis espectrográfico se empleó como sistema de electrodos el de punta-plano: un trozo de tubo aplastado para formar una superficie plana, y como contraelectrodo, grafito. La excitación empleada es la de uni-arc de la Fuente "Jaco SP Custom Varisource".
La precisión obtenida es inferior a la lograda por vÃa quÃmica, pero está dentro de los lÃmites tolerables con las exigencias del material. Se obtiene una ganancia apreciable de tiempo en la información de los resultados.Brass tubes were chemically analysed looking for those suitable as spectrographic standards because of their composition and arsenic contents.
The point-to-plane electrode system was used for the spectrographic analysis, i.e., a piece of flattened tube to obtain a smooth surface, and graphite as counterelectrode.
The material was excited by means of the Uni-Arc of a Jaco SP Custon Varisource.
Precision thus obtained was poorer than that attained via chemical methods, but keeps within allowable limits for the material specifications. The method is definitely timesaving
Effect of the Gribov horizon on the Polyakov loop and vice versa
We consider finite temperature SU(2) gauge theory in the continuum
formulation, which necessitates the choice of a gauge fixing. Choosing the
Landau gauge, the existing gauge copies are taken into account by means of the
Gribov-Zwanziger (GZ) quantization scheme, which entails the introduction of a
dynamical mass scale (Gribov mass) directly influencing the Green functions of
the theory. Here, we determine simultaneously the Polyakov loop (vacuum
expectation value) and Gribov mass in terms of temperature, by minimizing the
vacuum energy w.r.t. the Polyakov loop parameter and solving the Gribov gap
equation. Inspired by the Casimir energy-style of computation, we illustrate
the usage of Zeta function regularization in finite temperature calculations.
Our main result is that the Gribov mass directly feels the deconfinement
transition, visible from a cusp occurring at the same temperature where the
Polyakov loop becomes nonzero. In this exploratory work we mainly restrict
ourselves to the original Gribov-Zwanziger quantization procedure in order to
illustrate the approach and the potential direct link between the vacuum
structure of the theory (dynamical mass scales) and (de)confinement. We also
present a first look at the critical temperature obtained from the Refined
Gribov-Zwanziger approach. Finally, a particular problem for the pressure at
low temperatures is reported.Comment: 19 pages, 8 .pdf figures. v2: extended section 3 + extra references;
version accepted for publication in EPJ
Double non-perturbative gluon exchange: an update on the soft Pomeron contribution to pp scattering
We employ a set of recent, theoretically motivated, fits to non-perturbative
unquenched gluon propagators to check in how far double gluon exchange can be
used to describe the soft sector of pp scattering data (total and differential
cross section). In particular, we use the refined Gribov--Zwanziger gluon
propagator (as arising from dealing with the Gribov gauge fixing ambiguity) and
the massive Cornwall-type gluon propagator (as motivated from Dyson-Schwinger
equations) in conjunction with a perturbative quark-gluon vertex, next to a
model based on the non-perturbative quark-gluon Maris-Tandy vertex, popular
from Bethe-Salpeter descriptions of hadronic bound states. We compare the cross
sections arising from these models with "older" ISR and more recent TOTEM and
ATLAS data. The lower the value of total energy \sqrt{s}, the better the
results appear to be.Comment: 14 pages, 8 .pdf figures. To appear in Phys.Rev.
Commentary: Is the moon there if nobody looks -- Bell inequalities and physical reality
Marian Kupczynski(MK)is the author of a controversial paper published (2020)
in the journal Frontiers in Physics. The work is built around a mathematical
claim by MK which is actually false, and MK's logical reasoning around his
claim is also incorrect. The same claim was made by him in several other recent
papers published in other journals. A proof that the claimed result is false is
the main content of our present "Comment". It is purely a mathematical
counter-example to a mathematical claim in a number of MK's papers.Comment: 4 pages. arXiv admin note: substantial text overlap with
arXiv:2208.0993
A study of the Higgs and confining phases in Euclidean SU(2) Yang-Mills theories in 3d by taking into account the Gribov horizon
We study SU(2) three-dimensional Yang-Mills theories in presence of Higgs
fields in the light of the Gribov phenomenon. By restricting the domain of
integration in the functional integral to the first Gribov horizon, we are able
to discuss a kind of transition between the Higgs and the confining phase in a
semi-classical approximation. Both adjoint and fundamental representation for
the Higgs field are considered, leading to a different phase structure.Comment: 12 pages. Version accepted for publication in the EPJ
Renormalization aspects of N=1 Super Yang-Mills theory in the Wess-Zumino gauge
The renormalization of N=1 Super Yang-Mills theory is analysed in the
Wess-Zumino gauge, employing the Landau condition. An all orders proof of the
renormalizability of the theory is given by means of the Algebraic
Renormalization procedure. Only three renormalization constants are needed,
which can be identified with the coupling constant, gauge field and gluino
renormalization. The non-renormalization theorem of the gluon-ghost-antighost
vertex in the Landau gauge is shown to remain valid in N=1 Super Yang-Mills.
Moreover, due to the non-linear realization of the supersymmetry in the
Wess-Zumino gauge, the renormalization factor of the gauge field turns out to
be different from that of the gluino. These features are explicitly checked
through a three loop calculation.Comment: 15 pages, minor text improvements, references added. Version accepted
for publication in the EPJ
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