Assuntos
Doenças Genéticas Inatas/terapia , Transplante de Células-Tronco Hematopoéticas , Polidesoxirribonucleotídeos/administração & dosagem , Microangiopatias Trombóticas/tratamento farmacológico , Adulto , Aloenxertos , Transplante de Medula Óssea , Criança , Pré-Escolar , Europa (Continente) , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Sociedades Médicas , Microangiopatias Trombóticas/etiologiaRESUMO
A novel scheme for the focusing of high-energy leptons in future linear colliders was proposed in 2001 [P. Raimondi and A. Seryi, Phys. Rev. Lett. 86, 3779 (2001)]. This scheme has many advantageous properties over previously studied focusing schemes, including being significantly shorter for a given energy and having a significantly better energy bandwidth. Experimental results from the ATF2 accelerator at KEK are presented that validate the operating principle of such a scheme by demonstrating the demagnification of a 1.3 GeV electron beam down to below 65 nm in height using an energy-scaled version of the compact focusing optics designed for the ILC collider.
RESUMO
An approach to the measurement of distortion in hearing aids is presented. Distortion is first defined in general terms. The technique is then applied to the specific problem of predicting the detectability of non-linear distortion. Distortion indices have been obtained for two common, but very different forms of distortion: peak clipping (common to most conventional hearing aids); and, quantization (a form of distortion common to digital systems including digital hearing aids). Distortion indices were derived for the two forms of distortion in steady-state vowels. The results showed good agreement between the distortion indices at the just-detectable level of distortion.
