274 research outputs found
Dynamic spin response of a strongly interacting Fermi gas
We present an experimental investigation of the dynamic spin response of a
strongly interacting Fermi gas using Bragg spectroscopy. By varying the
detuning of the Bragg lasers, we show that it is possible to measure the
response in the spin and density channels separately. At low Bragg energies,
the spin response is suppressed due to pairing, whereas the density response is
enhanced. These experiments provide the first independent measurements of the
spin-parallel and spin-antiparallel dynamic and static structure factors and
open the way to a complete study of the structure factors at any momentum. At
high momentum the spin-antiparallel dynamic structure factor displays a
universal high frequency tail, proportional to , where is the probe energy.Comment: Replaced with final versio
La Tutela penale del consumatore di farmaci
Medicine consumption involves a primary constitutional interest, the human health. This consumption concerns either the individual, who may be directly harmed by the pharmaceutical product or, on a collective level, as a consequence of the creation of widespread danger connected to production, distribution and trading of the product.
This thesis aims to identify the most suitable kind of legal protection to safeguard the consumer. Dismissing civil and administrative protection, the penal system
proves the most effective, in particular, through recourse to âserious offencesâ (risk of injury) and to âcases which protect functionsâ. Both of these are anticipatory tools
of protection.
The method adopted is the analysis of the system of rules and incriminating cases contained in Chapter VI, Paragraph II of the Criminal Code and pursuant to the Legislative Decree No219, 24th April. We must not overlook the assessment pertaining to the compatibility of the aforementioned with the principle of offensiveness.
From the research, we can see how the contraventions contained in the complementary source act, mainly, as an anticipation of the protection prepared by the code
crimes.
This research highlights how the analysed offences are related to crimes committed against the person in the form of instrumental function, aimed towards the protection of the final legal good, represented by the individualâs health
The âDark Sideâ of Pneumoperitoneum and Laparoscopy
Laparoscopic surgery has been one of the most common procedures for abdominal surgery at pediatric age during the last few
decades as it has several advantages compared to laparotomy, such as shorter hospital stays, less pain, and better cosmetic results.
However, it is associated with both local and systemic modifications. Recent evidence demonstrated that carbon dioxide
pneumoperitoneum might be modulated in terms of pressure, duration, temperature, and humidity to mitigate and modulate
these changes. *e aim of this study is to review the current knowledge about animal and human models investigating
pneumoperitoneum-related biological and histological impairment. In particular, pneumoperitoneum is associated with local and
systemic inflammation, acidosis, oxidative stress, mesothelium lining abnormalities, and adhesion development. Animal studies
reported that an increase in pressure and time and a decrease in humidity and temperature might enhance the rate of
comorbidities. However, to date, few studies were conducted on humans; therefore, this research field should be further investigated
to confirm in experimental models and humans how to improve laparoscopic procedures in the spirit of minimally
invasive surgerie
Universal Loss Dynamics in a Unitary Bose Gas
The low temperature unitary Bose gas is a fundamental paradigm in few-body
and many-body physics, attracting wide theoretical and experimental interest.
Here we first present a theoretical model that describes the dynamic
competition between two-body evaporation and three-body re-combination in a
harmonically trapped unitary atomic gas above the condensation temperature. We
identify a universal magic trap depth where, within some parameter range,
evaporative cooling is balanced by recombination heating and the gas
temperature stays constant. Our model is developed for the usual
three-dimensional evaporation regime as well as the 2D evaporation case.
Experiments performed with unitary 133 Cs and 7 Li atoms fully support our
predictions and enable quantitative measurements of the 3-body recombination
rate in the low temperature domain. In particular, we measure for the first
time the Efimov inelasticity parameter * = 0.098(7) for the 47.8-G
d-wave Feshbach resonance in 133 Cs. Combined 133 Cs and 7 Li experimental data
allow investigations of loss dynamics over two orders of magnitude in
temperature and four orders of magnitude in three-body loss. We confirm the 1/T
2 temperature universality law up to the constant *
- âŠ