Hydrogels based on polyacrylamide, carboxymethylcellulose and silica are composites with good absorption release properties over time, this behavior allow their application in several areas. Thus, the aim of study was to analyze kinetic, spectroscopic, morphological, structural hydrogels prepared using different concentrations (0, 0.5, 2.5%). The results showed that swelling degree reduces incr...

The BABAR detector, which operates at the SLAC PEP-II asymmetric e+e− collider at energies near the Υ (4S) resonance, started operation on the 26 of May 1999. We present the first study of sin2β, with samples of B → J/ψK S and B → ψ(2S)K S decays, using 9.0 fb−1 of data recorded between January and July 2000 at the Υ (4S) resonance and 0.8 fb−1 recorded 40 MeV below the Υ (4S) resonance. A prel...