946 resultados para Gracchus, Gaius Sempronius, 154 B.C.-121 B.C.


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Squeeze, photograph, and notes by A.E. Gordon

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采用PCR技术获得中国鲇形目鱼类 1 1科 2 4属 2 7个代表种类细胞色素b基因 1 1 3 8bp全序列 ,比较分析了来自北美洲、非洲的部分鲇形目鱼类同一基因序列 ,并选取脂鲤目、鲤形目和鲱形目鱼类作外类群 ,采用Bayesian方法和最大简约法 (MP)构建分子系统树。结果表明 :(1 )鲇形目鱼类细胞色素b基因序列中 ,与脂鲤目、鲤形目以及鲱形目鱼类相比存在 3bp的缺失 ;(2 )鲇形目鱼类各科代表种类形成一单系群 ;(3 )两种建树方法均支持科、粒鲇科和钝头科形成一单系群 ;而胡子鲇科、

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Frontispiece of volume 2 is portrait of Janus Dousa.

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Polyhydroxyalcanoates copolymers with 3-hydroxybutirate (3HB) and 3-hydroxyvalerate (3HV) co-monomers, P3(HB-co-x%HV), were produced in fed-batch culture by Ralstonia eutropha DSM428 using fructose as a single carbon source in the first step and adding propionic acid in the second step by alternating feeding. Polymer yield was 0.18 g/L with a content of 24 mol% of the 3HV fraction determined by H-1 NMR. NMR measurements indicated that the polymer obtained is isotactic. The copolymer attained 35% of crystallinity according to X-ray diffraction measurements, and two (020) planes were observed. Thermal behavior presented melting temperature at 154 degrees C and the crystallization temperature was 65 degrees C. A glass transition temperature was observed at -10 degrees C. Average molecular weight measured by GPC was 4.9 x 10(5) Dalton. Isothermal radial growth rates of spherulites of P3(HB-co-24%HV) were studied. All experimental facts and the analysis of the sequence distribution of diads and triads of 3HB and 3HV units led to the conclusion that it is not a completely statistical random copolymer once it contains different types of segments. POLYM.

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OBJECTIVE To compare long-term outcome of children and young adults with arterial ischemic stroke (AIS) from 2 large registries. METHODS Prospective cohort study comparing functional and psychosocial long-term outcome (≥2 years after AIS) in patients who had AIS during childhood (1 month-16 years) or young adulthood (16.1-45 years) between January 2000 and December 2008, who consented to follow-up. Data of children were collected prospectively in the Swiss Neuropediatric Stroke Registry, young adults in the Bernese stroke database. RESULTS Follow-up information was available in 95/116 children and 154/187 young adults. Median follow-up of survivors was 6.9 years (interquartile range 4.7-9.4) and did not differ between the groups (p = 0.122). Long-term functional outcome was similar (p = 0.896): 53 (56%) children and 84 (55%) young adults had a favorable outcome (modified Rankin Scale 0-1). Mortality in children was 14% (13/95) and in young adults 7% (11/154) (p = 0.121) and recurrence rate did not differ (p = 0.759). Overall psychosocial impairment and quality of life did not differ, except for more behavioral problems among children (13% vs 5%, p = 0.040) and more frequent reports of an impact of AIS on everyday life among adults (27% vs 64%, p < 0.001). In a multivariate regression analysis, low Pediatric NIH Stroke Scale/NIH Stroke Scale score was the most important predictor of favorable outcome (p < 0.001). CONCLUSION There were no major differences in long-term outcome after AIS in children and young adults for mortality, disability, quality of life, psychological, or social variables.

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Inclui notas explicativas e bibliográficas