Problèmes posés par le traitement des informations en physique nucléaire. L'analyseur multidimensionnel fonctionnel S. P. N. B. E. (Saclay)

A few years ago, the requirement of S. P. N. B. E. physicist involved magnetic tape digital techniques, the increase of number of channel of the analysers, together with results analysed against several parameters. The purpose of our survey is to show the différent steps in the présent functional multidimensional analyser design and its construction. There are no difficulties in using it either in simple or in complex experiments, although the component number is rather important. The total unit and the standart digit code are described. Input and control of the analyser can vary according to the kind of experiment whereas by splitting it to be adapted to experiments of various storage degrees.Il y a quelques années, des physiciens du S. P. N. B. E. posèrent le problème de l'enregistrement magnétique des informations en physique nucléaire, de l'augmentation en nombre de canaux des analyseurs et de l'exploitation simultanée des résultats en fonction de plusieurs paramètres. L'exposé a pour but de montrer les différents stades et réalisations qui nous ont conduits à l'analyseur multidimensionnel fonctionnel actuel

Ensemble analyseur en impulsions de haute résolution à taux de comptage élevé

Les éléments de cette nouvelle chaîne nous ont apporté une meilleure résolution à taux de comptage élevé et des conditions supérieures de mesures en valeur absolue

Ensemble analyseur en impulsions de haute résolution à taux de comptage élevé

The characteristics and performance of the elements of a new amplifying system are reported here. The principal features of the construction are a very good resolution even at a relatively high counting rate (2 x 10 5 counts's) and the possibility of knowing after each measurement the total number of pile-up losses.Les éléments de cette nouvelle chaîne nous ont apporté une meilleure résolution à taux de comptage élevé et des conditions supérieures de mesures en valeur absolue

Sleep disorders in aging polio survivors: A systematic review

International audienceBackground: Sleep disturbances, especially sleep disordered breathing and sleep movement disorders, seem to be highly prevalent among aging polio survivors. They could contribute to late functional deterioration, fatigue, poor quality of life and negative health outcomes, thereby increasing cardiovascular risk.Objectives: This review focused on current knowledge of the prevalence of sleep disorders in polio survivors, their features, predictive factors and management.Data sources: Articles were searched in PubMed and the Cochrane Library up to March 2018.Study eligibility criteria, participants and interventions: Articles needed to 1) be written in English; 2) include only participants with previous poliomyelitis or post-polio syndrome diagnosis; and 3) involve any form of sleep disorders. Articles about isolated fatigue or non-specific sleep complaints as well as non-polio specific articles (neuromuscular disorders) were not included in the qualitative analysis.Results: Among 166 studies identified, 41 were included in this review. The prevalence of sleep apnea syndrome, nocturnal alveolar hypoventilation and restless legs syndrome seemed higher than in the general population (from 7.3% to 65%, 15% to 20% and 28% to 63%, respectively). This review highlights the lack of randomised studies assessing sleep disorder management in this specific population.Limitations: Because of the small number of eligible publications, none was excluded for methodological limitations, and only a qualitative analysis was provided.Conclusions and implications: Follow-up of polio survivors should include systematic screening for sleep disorders because they are associated with adverse consequences. Sleep disorder evaluation and management should improve the long-term survival and quality of life of polio survivors. Methodologically robust clinical trials are needed, but the decreasing prevalence and large clinical spectrum of the disease may complicate the creation of comparable groups