RESUMO
Searches for the lepton number violating K^{+}âπ^{-}µ^{+}e^{+} decay and the lepton flavor violating K^{+}âπ^{+}µ^{-}e^{+} and π^{0}âµ^{-}e^{+} decays are reported using data collected by the NA62 experiment at CERN in 2017-2018. No evidence for these decays is found and upper limits of the branching ratios are obtained at 90% confidence level: B(K^{+}âπ^{-}µ^{+}e^{+})<4.2×10^{-11}, B(K^{+}âπ^{+}µ^{-}e^{+})<6.6×10^{-11} and B(π^{0}âµ^{-}e^{+})<3.2×10^{-10}. These results improve by 1 order of magnitude over previous results for these decay modes.
Assuntos
Bebidas/análise , Fluoretos/análise , Adolescente , Animais , Cacau , Registros de Dieta , Comportamento Alimentar , Feminino , Frutas , Humanos , Masculino , Leite , Estações do Ano , CháAssuntos
Bebidas , Comportamento do Consumidor , Comportamento de Ingestão de Líquido , Adolescente , Análise de Variância , Animais , Bebidas/estatística & dados numéricos , Bebidas Gaseificadas/estatística & dados numéricos , Citrus , Café , Comportamento do Consumidor/estatística & dados numéricos , Humanos , Itália , Masculino , Leite/estatística & dados numéricos , Estações do Ano , Inquéritos e Questionários , CháRESUMO
A microbiological survey has been carried out on 179 healthy, child-bearing aged, non-pregnant women, with the aim to evaluate the incidence of anaerobic non-spore forming bacteria in the normal vaginal flora. This group of bacteria has been isolated in 50.3% of women, with a clear prevalence of "anaerobic Streptococci " and Bacteroides, followed by Fusobacterium and Veillonella. No Propionibacterium, Eubacterium or Bifidobacterium have been isolated. According to many Authors the non-spore forming anaerobes must be considered opportunistic bacteria, responsible of many infections of the female genital tract, especially when associated with other aerobic or facultative bacteria. Antibiograms have demonstrated a wide spectrum of activity of chloramphenicol and clindamycin; although not widely distributed, antibacterial activity have also shown metronidazole, penicillins, cephalosporins and lincomycin.
Assuntos
Antibacterianos/farmacologia , Bactérias/isolamento & purificação , Vagina/microbiologia , Adolescente , Adulto , Bactérias/efeitos dos fármacos , Bacteroides/isolamento & purificação , Feminino , Fusobacterium/isolamento & purificação , Humanos , Testes de Sensibilidade Microbiana , Pessoa de Meia-Idade , Peptococcus/isolamento & purificação , Peptostreptococcus/isolamento & purificação , Streptococcus/isolamento & purificação , Veillonella/isolamento & purificaçãoRESUMO
Enterobacteriaceae from faeces of cattle belonging to four cattle farms situated in the Ferrara district were investigated. At the same time, investigation was made of effluent sewage and recipient wells (upstream and downstream). The cattle (of the Italian Frisona breed) resulted uncontaminated by Salmonellae, but proved to be very susceptible to Arizona, Citrobacter, Shigella and S. gallinarum-pullorum infections, coming from the environment. Predominant species in faeces were as follows: Proteus, Klebsiella, Enterbacter and coliforms. One farm proved to be heavily polluted by Edwardsiella tarda. Yersinia enterocolitica strains were also isolated from faeces and sewage.