~(19)F+~(93)Nb耗散反应产物激发函数中截面测量的不重复性

完成了 1 9F + 93Nb重离子耗散碰撞激发函数的两次独立测量 .束流的入射能量为 1 0 0— 1 0 8MeV ,步长 2 50keV .两次测量的宏观条件几乎完全一样 ,惟一的差别是使用了厚度分别为 70和 71 μg cm2 的两块 93Nb同位素靶 .实验结果表明 :( 1 )两次测量所得到的耗散反应产物激发函数的涨落具有不可平滑的结构 ;( 2 )这种不平滑的涨落截面有不重复的迹象 .着重从实验的角度对这一结果进行了讨论 .

~(19)F+~(93)Nb重离子耗散碰撞中截面测量的不可重复性(英文)

完成了１９Ｆ＋９３Ｎｂ重离子耗散碰撞激发函数的两次独立测量．束流１９Ｆ８＋的入射能量１００—１０８ＭｅＶ，能量步长２５０ｋｅＶ；两次测量中分别使用了厚度为７０和７１μｇ／ｃｍ２的９３Ｎｂ靶，其它宏观实验条件（例如，入射能量及能量步长，探测器及其探测角度，加速器、电子学以及数据获取系统的参数选取等等）则保持完全相同．实验结果表明，两次测量所得到的耗散产物截面的激发函数的不平滑结构具有不可重复性．这一实验结果支持了最近提出的理论预言：“在复杂量子碰撞中存在对初始条件的极端敏感性与混沌运动．”

Enhanced charge collection in polymer photovoltaic cells by using an ethanol-soluble conjugated polyfluorene as cathode buffer layer

We report enhanced polymer photovoltaic (PV) cells by utilizing ethanol-soluble conjugated poly (9, 9-bis (6'-diethoxylphosphorylhexyl) fluorene) (PF-EP) as a buffer layer between the active layer consisting of poly(3-hexylthiophene)/[6, 6]-phenyl C61-butyric acid methyl ester blend and the Al cathode. Compared to the control PV cell with Al cathode, the introduction of PF-EP effectively increases the shunt resistance and improves the photo-generated charge collection since the slightly thicker semi-conducting PF-EP layer may restrain the penetration of Al atoms into the active layer that may result in increased leakage current and quench photo-generated excitons. The power conversion efficiency is increased ca. 8% compared to the post-annealed cell with Al cathode.

Effects of prior heavy exercise on V(over dot)O-2 kinetics during heavy exercise are related to changes in muscle activity

Burnley, M., Doust, J.H., Ball, D. and Jones, A.M. (2002) Effects of prior heavy exercise on VO2 kinetics during heavy exercise are related to changes in muscle activity. Journal of Applied Physiology 93, 167-174. RAE2008

The transformation of Ireland 1958 - 93: the role of ideas in punctuating institutional path dependency at critical junctures

Ireland experienced two critical junctures when its economic survival was threatened: 1958/9 and 1986/7. Common to both crises was the supplanting of long established practices, that had become an integral part of the political culture of the state, by new ideas that ensured eventual economic recovery. In their adoption and implementation these ideas also fundamentally changed the institutions of state – how politics was done, how it was organised and regulated. The end result was the transformation of the Irish state. The main hypothesis of this thesis is that at those critical junctures the political and administrative elites who enabled economic recovery were not just making pragmatic decisions, their actions were influenced by ideas. Systematic content analysis of the published works of the main ideational actors, together with primary interviews with those actors still alive, reveals how their ideas were formed, what influenced them, and how they set about implementing their ideas. As the hypothesis assumes institutional change over time historical institutionalism serves as the theoretical framework. Central to this theory is the idea that choices made when a policy is being initiated or an institution formed will have a continuing influence long into the future. Institutions of state become ‘path dependent’ and impervious to change – the forces of inertia take over. That path dependency is broken at critical junctures. At those moments ideas play a major role as they offer a set of ready-made solutions. Historical institutionalism serves as a robust framework for proving that in the transformation of Ireland the role of ideas in punctuating institutional path dependency at critical junctures was central.

La migración de cultivos de granos como indicador del cambio climático 1941 - 93 en la región pampeana argentina

p.171-176

Changes in functional behavior of 93 % Pb(Mg1/3Nb2/3)O-3-7 % PbTiO3 thin films induced by ac electric fields

The dielectric properties of Au/[93%Pb(Mg1/3Nb2/3)O-3-7%PbTiO3] (PMN-PT)/(La0.5Sr0.5)CoO3/MgO thin-film capacitor heterostructures, made using pulsed laser deposition, have been investigated, with particular emphasis on the changes in response associated with increasing the magnitude of the ac measuring field. It was found that increasing the ac field caused a change in the frequency spectrum of relaxators, increasing the speed of response of "slow" relaxators, with an associated decrease in the freezing temperature (T-f) of the relaxor system; in addition, other characteristic parameters relating to polar relaxation (activation energy E-a and attempt frequency 1/tau(0)), described by fitting of the dielectric response to a Vogel-Fulcher expression, were found to change continuously as ac field levels were increased.

Annotation of Case C-43/93, Raymond Vander Elst v Office des Migrations Internationales, ECR I-3803

Freedom to provide services - Nationals of a non-member country - Posted Workers

Annotation of Case C-375/92, Commission v Kingdom of Spain, ECR 1994 I-923, and Case C-45/93, Commission v Kingdom of Spain, ECR 1994 I-911

Failure to fulfil obligations - Freedom to provide services - Tourist guides - Professional qualification required by national rule - Discrimination - Museum admission

Prenatal diagnosis of urinary malformations: results in a series of 93 consecutive cases.

OBJECTIVE: To evaluate the pertinence of prenatal diagnosis in cases of congenital uropathy. STUDY DESIGN: Retrospective evaluation over a period of 6.5 years. METHOD: 93 cases were involved in the comparison of prenatal ultrasonographic diagnosis with neonatal findings, autopsy results, and follow-up data. RESULTS: 33 fetuses had renal parenchymal lesions, 44 had excretory system lesions, and 6 had bladder and/or urethral lesions. Seventy-three pregnancies lead to live births. Eighteen terminations of pregnancy were performed on the parents' request for extremely severe malformations. Two intrauterine deaths were observed, and two infants died in the postnatal period. Prenatal diagnosis was obtained at an average of 27 weeks gestation. Diagnostic concordance was excellent in 82% and partial in 12% of cases with renal parenchymal lesions; the false-positive rate was 6%. For excretory system lesions, concordance was excellent in 87% and partial in 7.4% of cases, with a false-positive rate of 5.6%. Finally, concordance was excellent in 100% of cases of bladder and/or urethral lesions. The overall rate of total concordance was 86%. Partial concordance cases consisted of malformations different from those previously diagnosed, but prenatal diagnosis nevertheless lead to further investigations in the neonatal period and to proper management. The false-positive diagnoses (5.4%) never lead to termination of pregnancy. CONCLUSION: Prenatal diagnosis of congenital uropathy is effective. A third-trimester ultrasonographic examination is necessary to ensure proper neonatal management, considering that the majority of cases are diagnosed at this gestational age.

M. Annaeus Lucanus, Pharsalia (2-93). - P. Vergilius Maro, Aeneis [fragment] (93v). - P. Ovidius Naso, Metamorphoses [fragment] (93v).

Les textes de Virgile et d'Ovide (f. 93v) ont été copiés au XIIe s.

Boetius, De consolatione philosophiae (1-93).

Abbaye Saint-Maur-des-Fossés ; cf. B. de Montfaucon, Bibliotheca bibliothecarum, II, 1739, p.1141-1143 : "43. 1066. Boëtii de Philosophica consolatione". Ex-libris : F. 2 : "Ex-libris Monasterii Sancti Germani a Pratis Parisiorum". France.