118,181 research outputs found
Associazionismo e identità. L’esperienza di un’associazione di migranti a Genova.
No full textL'articolo propone alcune riflessioni antropologiche allo scopo di mettere in luce l’infondatezza degli
atteggiamenti essenzializzanti e dei processi di categorizzazione e di stereotipizzazione
particolarmente evidenti nei confronti di chi è di religione musulmana, a partire da una ricerca
etnografica effettuata a Genova presso un’associazione di giovani adulti migrati dal Marocco
Fourier sums with exponential weights on (-1,1): L^1 and L^infty cases.
No full textAbstractWe study the behavior of the Fourier sums in orthonormal polynomial systems, related to exponential weights on (−1,1), in weighted L1 and uniform metrics
Lagrange interpolation with exponential weights on (-1,1)
No full textIn order to approximate functions defined on (−1, 1) with exponential growth for |x| → 1, we consider
interpolation processes based on the zeros of orthonormal polynomials with respect to exponential weights.
Convergence results and error estimates in weighted L^p metric and uniform metric are given. In particular,
in some function spaces, the related interpolating polynomials behave essentially like the polynomial of
best approximation
Reduced thymic output, increased spontaneous apoptosis and oligoclonal B cells in polyethylene glycol-adenosine deaminase-treated patients
No full textUreteral obstruction in a patient with chronic granulomatous disease, receiving combined prophylaxis with IFN-gamma and antibiotics
No full textL^p-convergence of Fourier sums with exponential weights on (-1,1)
No full textAbstractIn order to approximate functions defined on (−1,1) and having exponential singularities at the endpoints of the interval, we study the behavior of some modified Fourier Sums in an orthonormal system related to exponential weights. We give necessary and sufficient conditions for the boundedness of the related operators in suitable weighted Lp-spaces, with 1<p<∞. Then, in these spaces, these processes converge with the order of the best polynomial approximation
Embryonic production of nitric oxide and its role in implantation: a pilot study.
No full textTo investigate the ability of human embryos to produce nitric oxide (NO) and correlate its production with embryo quality and pregnancy rate.Twenty-three women participated in the study and were submitted to controlled ovarian stimulation and intracytoplasmic sperm injection. Embryos were singularly cultured in medium microdrops of 50 microL and were replaced, by transcervical transfer, at the 2- to 6-cell stage. In the culture media of each embryo the NO production was assessed by monitoring the levels of its stable oxidation products (nitrites/nitrates).All the 23 patients underwent embryo transfer. After microinjection 64 embryos were obtained. The mean number of transferred embryos was 2.61 +/- 0.46 and the pregnancy rate was 26\%. The mean nitrite/nitrate concentrations of culture medium of each embryo was significantly higher (5.88 +/- 2.34 micromol/L) than in pure P-1 medium (0.81 +/- 0.21 micromol/L; p < 0.001) demonstrating an embryonic secretion of NO. Comparing pregnant (7.34 +/- 2.72 micromol/L) versus nonpregnant patients (5.53 +/- 1.49 micromol/L; p = 0.022), the mean nitrite/nitrate concentrations were significantly higher. Furthermore, the best quality embryos of pregnant women produced significantly higher nitrite/nitrate concentrations than those of not pregnant patients.It seems that NO production in nidating embryos is increased and that it may be primarily associated with a better morphology and a better growth potential of developing embryos
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