19,428 research outputs found
Manual para elaboração do Plano Municipal de Arborização Urbana.
bitstream/item/96121/1/2013-SergioA-Manual-PMARB.pdfAutores: Alberto Barcellos, Cláudio Renato Wojcikiewicz, Ezimar Andrade Lubaszewski, Jorge Zbigniew Mazuchowski, José Roberto da Conceição, Luciana Leal, Maria Lúcia Miró Medeiros, Paulo Alfonso Conte, Saulo Gomes Karvat, Sérgio Ahrens
3D direct impacts of urgan aerosols on dynamics during the CAPITOUL field experiment
International audienceEvaluating the radiative impacts of aerosol particles is of great interest for understanding atmospheric physics and processes feedbacks. To respond to such objectives, the online fully coupled model Meso-NH is applied to a real case during a two-day Intensive Observation Period (IOP) of the CAPITOUL campaign. The aerosol optical properties are computed from the chemical composition and the size distribution of the particle population, and are compared to observations and analysed at local and regional scales. The differences between two simulations are then studied in order to isolate the direct radiative impacts of aerosols on dynamics. Results show that the aerosol particles generate a forcing on shortwave flux by a decrease of the amount reaching the surface up to 30 Wm−2. The resulting feedbacks lead to a cooling up to 0.6 K on the 2-meter temperature over the city of Toulouse and over the larger 125 km by 125 km area around Toulouse. This cooling is also modeled along the whole boundary layer, leading to a decrease of the boundary layer height up to −50 m during the afternoon and a decrease of the vertical velocities with an average of −3 %
Evaluation of patients' discomfort regarding regional anesthesia: 8AP6‐7
Background and Goal of Study: Regional anesthesia may cause physical
and psychological discomfort. 50% of patients scheduled for urologic procedures
undergo regional anesthesia, and their comfort represents a concern to
the anesthesiologist. This study aims to:
1. identify factors related to patients’ discomfort regarding regional
anesthesia(position for anesthesia and surgery procedures, puncture site
pain, room temperature, audio-visual perception, sensitive/motor blockade);
2. Evaluate patients’ satisfaction with anesthesia.
Materials and Methods: Af ter approval from the Hospital Ethics Committee
all patients over 18years old, scheduled for urologic surgery, understanding
Portuguese and anesthetized with spinal anesthesia were included. Patients
in day case surgery or with incomplete medical records were excluded. We
performed a questionnaire(with closed ended questions) in the first 24 hours
af ter surgery and consulted anesthesia records. We asked yes or no questions,
used a 1-10 scale to evaluate pain and a 1-4 scale to evaluate satisfaction.
Because there isn’t a valid questionnaire in the literature to evaluate what
we aimed to, we created one based on multiple articles1,2.
Results and Discussion: 50patients were included; mean age 65 years old
(min.32, max.89); 78% males and 70% ASAII. 75%denied discomfort during
positioning for back puncture and 58% referred cold during anesthesia
or surgery. One person was uncomfortable in the surgical position and no
one considered being awake uncomfortable; sensitive/motor blockade was
uncomfortable for 22%. Spinal was more painful than the venous puncture
for32%; for 50%venous puncture was more painful and for 18%pain was similar.
Patients were satisfied or very satisfied with the anesthetic technique and
would choose the same technique in the future in 98% of cases.
Conclusion: Although this questionnaire is not validated, it allowed us to understand
that cold during anesthesia/surgery is a problem for most patients
but this is easily solved. It also showed us that most patients are not uncomfortable
with positioning during procedures, being awake and not feeling the
legs.Interestingly only about one third of the patients thought that the back
puncture was more painful than the venous puncture. In general we consider
spinal anesthesia a good choice for these patients and we are satisfied that
patients don’t find it uncomfortable and are also satisfie
Nontrivial temporal scaling in a Galilean stick-slip dynamics
We examine the stick-slip fluctuating response of a rough massive
non-rotating cylinder moving on a rough inclined groove which is submitted to
weak external perturbations and which is maintained well below the angle of
repose. The experiments presented here, which are reminiscent of the Galileo's
works with rolling objects on inclines, have brought in the last years
important new insights into the friction between surfaces in relative motion
and are of relevance for earthquakes, differing from classical block-spring
models by the mechanism of energy input in the system. Robust nontrivial
temporal scaling laws appearing in the dynamics of this system are reported,
and it is shown that the time-support where dissipation occurs approaches a
statistical fractal set with a fixed value of dimension. The distribution of
periods of inactivity in the intermittent motion of the cylinder is also
studied and found to be closely related to the lacunarity of a random version
of the classic triadic Cantor set on the line.Comment: 7 pages including 6 figure
Non Abelian Sugawara Construction and the q-deformed N=2 Superconformal Algebra
The construction of a q-deformed N=2 superconformal algebra is proposed in
terms of level 1 currents of quantum affine
Lie algebra and a single real Fermi field. In particular, it suggests the
expression for the q-deformed Energy-Momentum tensor in the Sugawara form. Its
constituents generate two isomorphic quadratic algebraic structures. The
generalization to is also proposed.Comment: AMSLATEX, 21page
- …