18,346 research outputs found
The HCV Sicily Network: a web-based model for the management of HCV chronic liver diseases
Epidemiological studies report that in Sicily reside about 30,000 citizens with a diagnosis of chronic hepatitis due to HCV. The availability of direct antiviral action (DAA) is a real therapeutic breakthrough, but the high cost of the therapeutic regimes limits their use and forced the National Health System to establish clinical priority for the treatment
Numerical study on Schramm-Loewner Evolution in nonminimal conformal field theories
The Schramm-Loewner evolution (SLE) is a powerful tool to describe fractal
interfaces in 2D critical statistical systems. Yet the application of SLE is
well established for statistical systems described by quantum field theories
satisfying only conformal invariance, the so called minimal conformal field
theories (CFTs). We consider interfaces in Z(N) spin models at their self-dual
critical point for N=4 and N=5. These lattice models are described in the
continuum limit by non-minimal CFTs where the role of a Z_N symmetry, in
addition to the conformal one, should be taken into account. We provide
numerical results on the fractal dimension of the interfaces which are SLE
candidates for non-minimal CFTs. Our results are in excellent agreement with
some recent theoretical predictions.Comment: 4 pages, 2 figures, v2: typos corrected, published versio
Evolution of Large Scale Curvature Fluctuations During the Perturbative Decay of the Inflaton
We study the evolution of cosmological fluctuations during and after
inflation driven by a scalar field coupled to a perfect fluid through afriction
term. During the slow-roll regime for the scalar field, the perfect fluid is
also frozen and isocurvature perturbations are generated. After the end of
inflation, during the decay of the inflaton, we find that a change in the
observationally relevant large scale curvature fluctuations is possible.Comment: 9 pages, 2 figures; v2: version published in PR
Carbon nanotubes as target for directional detection of light WIMP
In this paper I will briefly introduce the idea of using Carbon Nanotubes
(CNT) as target for the detection of low mass WIMPs with the additional
information of directionality. I will also present the experimental efforts of
developing a Time Projection Chamber with a CNT target inside and the results
of a test beam at the Beam Test Facility of INFN-LNF.Comment: 3 figures, IFAE2017 poster session proceeding
A High Sensitive Nested PCR for Toxoplasma gondii Detection in Animal and Food Samples
Toxoplasma gondii is a major food and waterborne transmitted parasite world-wide. The tissues and meat
samples of many warm blooded animals can contain tissues cysts from chronic toxoplasmosis. Water and vegetable
can be contaminated by the parasitic oocysts shed through the feces of infected cats, representing the definitive
host of the parasite.
A sensitive PCR for Toxoplasma gondii detection is described. The first step amplified the region between the
28S and 18S rDNA in the closely related T. gondii and Neospora caninum; RFLP analysis distinguished the DNA
from the two morphologically identical parasites. Although N. caninum is not involved in human transmission, so far,
it is important for animal health since is a major responsible for abortion in cattle.
The nested PCR was used in a dilution assay in pork sausage samples spiked with T. gondii parasitic DNA. The
analysis showed that up to 200fg equivalent to two single parasites only, could be detected. Similar detection limit
for T. gondii can be obtained with real-time PCRs, but real time methods need special consumables and expensive
equipment
Spot size measurements in the Eli-NP compton gamma source
A high brightness electron Linac is being built in the Compton Gamma Source at the ELI Nuclear Physics facility in Romania. To achieve the design luminosity, a train of 32 bunches with a nominal charge of 250 pC and 16 ns spacing , will collide with the laser beam in the interaction point. Electron beam spot size is measured with an OTR (optical transition radiation) profile moni-tors. In order to measure the beam properties, the optical radiation detecting system must have the necessary accu-racy and resolution. This paper deals with the studies of different optic configurations to achieve the magnifica-tion, resolution and accuracy desired considering design and technological constraints; we will compare several configurations of the optical detection line to justify the one chosen for the implementation in the Lina
Canine Mesenchymal Stem Cells from visceral and subcutaneuous adipose tissue for cell-based therapy
This study compared some characteristics of canine Adipose tissue-Derived Mesenchymal Stem Cells (cAD-MSCs) from subcutaneous and visceral fat. These findings were directed to obtain high quantity and quality cAD-MSCs for clinical cell-based therapy
Intense terahertz pulses from SPARC-LAB coherent radiation source
The linac-based Terahertz source at the SPARC_LAB test facility is able to gene
rate highly intense Terahertz broadband
pulses
via
coherent transition radiation (CTR) from high brightness electron beams. The THz pulse duration is typically
down to 100 fs RMS and can be tuned through the electron bunch duration and shaping. The measured stored energy in a
single THz pulse has reached 40
μ
J, which corresponds to a peak
electric field of 1.6 MV/cm at the THz focus. Here we
present the main features, in particular spatial and sp
ectral distributions and energy
characterizations of the
SPARC_LAB THz source, which is very competitive for investigations in Condensed Matter, as well as a valid tool for
electron beam longitudinal diagnostics
An innovative method for the detection of contaminant viral genome in cell cultures
The use of cell cultures involves different fields of biology, from diagnosis to research. Moreover, technologies based on animal cells represent a useful tool to the development of biological products for the prophylaxis and therapy in humans and animals. Therefore, it is necessary to perform quality controls, including virological tests. Several tests performed in research laboratories are able to discriminate one or more viral species, but it is not possible to demonstrate the presence of contaminant viral genome with one non-specific method. The aim of this work consisted on the realization of a biomolecular method able to detect and to identify by sequencing extraneous viral genome in cell cultures of animal and human origin in the absence of any specific information about the virus
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