author = "Balbi, A"

Found 273 documents, displaying page 5 of 28

## Division non fractionnaire de fréquence dans un résonateur à quartz

Description : Un type nouveau de résonance est découvert dans le spectre d'un résonateur à quartz. L'analyse expérimentale montre qu'il s'agit d'un couplage entre trois fréquences propres, ces fréquences admettant une combinaison à coefficients entiers égale à zéro. Pour interpréter ce phénomène, on construit un ...
Repository : HAL - Hyper Article on Line
Language(s) : French

## Glycated hemoglobin and antidiabetic strategies as risk factors for hepatocellular carcinoma

Description : AIM: To evaluate the relationship between glycemic control [assessed by glycated hemoglobin (HbA1c)], antidiabetic therapies and the risk of hepatocellular carcinoma (HCC).METHODS: We recruited 465 patients with HCC, 618 cases with liver cirrhosis and 490 controls with no liver disease. Among subjec...
Repository : DOAJ-Articles
Language(s) : Undetermined

## Association between hepatocellular carcinoma and type 2 diabetes mellitus in Italy: Potential role of insulin

Description : AIM: To investigate the relationships between Type 2 diabetes mellitus (DM2) and the risk of hepatocellular carcinoma (HCC).METHODS: We studied the association between DM2 and HCC in a large case-control study that enrolled 465 consecutive Caucasian patients with HCC (78.3% males, mean age 68.5 ± 8....
Repository : DOAJ-Articles
Language(s) : Undetermined

## Secondary CMB anisotropies from the kinetic SZ effect

Author(s) : Valageas, P. , Balbi, A. , Silk, J.
Description : We present an analytic model, based on previous works which tackled the reionization history of the universe, which allows us to describe the generation of the secondary CMB anisotropies due to the kinetic SZ effect. We take into account the "patchy pattern" of reionization (HII bubbles), the cros...
Repository : arXiv
Language(s) : Undetermined

## Constraints on flat cosmologies with tracking Quintessence from Cosmic Microwave Background observations

Description : We constrain cosmological parameters in flat cosmologies with tracking dark energy (or Quintessence) using the existing data on Cosmic Microwave Background (CMB) anisotropies. We perform a maximum likelihood analysis using combined data from COBE/DMR, BOOMERanG, DASI and MAXIMA, obtaining estimate...
Repository : arXiv
Language(s) : Undetermined

## ROMA: a map-making algorithm for polarised CMB data sets

Description : We present ROMA, a parallel code to produce joint optimal temperature and polarisation maps out of multidetector CMB observations. ROMA is a fast, accurate and robust implementation of the iterative generalised least squares approach to map-making. We benchmark ROMA on realistic simulated data fro...
Repository : arXiv
Language(s) : Undetermined

## Late universe dynamics with scale-independent linear couplings in the dark sector

Description : We explore the dynamics of cosmological models with two coupled dark components with energy densities $\rho_A$ and $\rho_B$. We assume that the coupling is of the form $Q=Hq(\rho_A,\rho_B)$, so that the dynamics of the two components turns out to be scale independent, i.e. does not depend explicit...
Repository : arXiv
Language(s) : Undetermined

## Affine parameterization of the dark sector: costraints from WMAP5 and SDSS

Description : We study a set of universe models where the dark sector is described by a perfect fluid with an affine equation of state $P=P_0+\alpha \rho$, focusing specifically on cosmological perturbations in a flat universe. We perform a Monte Carlo Markov Chain analysis spanning the full parameter space of ...
Repository : arXiv
Language(s) : Undetermined

## Constraints on Primordial Non-Gaussianity from a Needlet Analysis of the WMAP-5 Data

Description : We look for a non-Gaussian signal in the WMAP 5-year temperature anisotropy maps by performing a needlet-based data analysis. We use the foreground-reduced maps obtained by the WMAP team through the optimal combination of the W, V and Q channels, and perform realistic non-Gaussian simulations in o...
Repository : arXiv
Language(s) : Undetermined

## Optimising Boltzmann codes for the Planck era

Description : High precision measurements of the Cosmic Microwave Background (CMB) anisotropies, as can be expected from the Planck satellite, will require high-accuracy theoretical predictions as well. One possible source of theoretical uncertainty is the numerical error in the output of the Boltzmann codes us...
Repository : arXiv
Language(s) : Undetermined

Found 273 documents, displaying page 5 of 28