979 resultados para 166-1007
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von Maximilian Parmod [d.i. Max Apt]
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We consider a class of models with gauged U(1) R symmetry in 4D N=1 super-gravity that have, at the classical level, a metastable ground state, an infinitesimally small (tunable) positive cosmological constant and a TeV gravitino mass. We analyse if these properties are maintained under the addition of visible sector (MSSM-like) and hidden sector state(s), where the latter may be needed for quantum consistency. We then discuss the anomaly cancellation conditions in supergravity as derived by Freedman, Elvang and Körs and apply their results to the special case of a U(1) R symmetry, in the presence of the Fayet-Iliopoulos term (ξ) and Green-Schwarz mechanism(s). We investigate the relation of these anomaly cancellation conditions to the “naive” field theory approach in global SUSY, in which case U(1) R cannot even be gauged. We show the two approaches give similar conditions. Their induced constraints at the phenomenological level, on the above models, remain strong even if one lifted the GUT-like conditions for the MSSM gauge couplings. In an anomaly-free model, a tunable, TeV-scale gravitino mass may remain possible provided that the U(1) R charges of additional hidden sector fermions (constrained by the cubic anomaly alone) do not conflict with the related values of U(1) R charges of their scalar superpartners, constrained by existence of a stable ground state. This issue may be bypassed by tuning instead the coefficients of the Kahler connection anomalies (b K , b CK ).
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In this Note we present the basic features of the theory of Lipschitz maps within Carnot groups as it is developed in [8], and we prove that intrinsic Lipschitz domains in Carnot groups are uniform domains.
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BACKGROUND Closed reduction and pinning is the accepted treatment choice for dislocated supracondylar humeral fractures in children (SCHF). Rates of open reduction, complications and outcome are reported to be dependent on delay of surgery. We investigated whether delay of surgery had influence on the incidence of open reduction, complications and outcome of surgical treatment of SCHFs in the authors' institution. METHODS Three hundred and forty-one children with 343 supracondylar humeral fractures (Gartland II: 144; Gartland III: 199) who underwent surgery between 2000 and 2009 were retrospectively analysed. The group consisted of 194 males and 149 females. The average age was 6.3 years. Mean follow-up was 6.2 months. Time interval between trauma and surgical intervention was determined using our institutional database. Clinical and radiographical data were collected for each group. Influence of delay of treatment on rates of open reduction, complications and outcome was calculated using logistic regression analysis. Furthermore, patients were grouped into 4 groups of delay (<6 h, n = 166; 6-12 h, n = 95; 12-24 h, n = 68; >24 h, n = 14) and the aforementioned variables were compared among these groups. RESULTS The incidence of open procedures in 343 supracondylar humeral fractures was 2.6 %. Complication rates were similar to the literature (10.8 %) primarily consisting of transient neurological impairments (9.0 %) which all were fully reversible by conservative treatment. Poor outcome was seen in 1.7 % of the patients. Delay of surgical treatment had no influence on rates of open surgery (p = 0.662), complications (p = 0.365) or poor outcome (p = 0.942). CONCLUSIONS In this retrospective study delay of treatment of SCHF did not have significant influence on the incidence of open reduction, complications, and outcome. Therefore, in SCHF with sufficient blood perfusion and nerve function, elective treatment is reasonable to avoid surgical interventions in the middle of the night which are stressful and wearing both for patients and for surgeons. LEVEL OF EVIDENCE III (retrospective comparative study).
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Our previous work has shown that localised activity of the cell-wall-loosening protein expansin is sufficient to induce primordia on the apical meristem of tomato, consistent with the hypothesis that tissue expansion plays a key role in leaf initiation. In this paper we describe the earliest morphogenic events visible on the surface of the apical meristem of tomato (Lycopersicon esculentum Mill.) following treatment with expansin and report on the spectrum of final structures formed. Our observations are consistent with a proposed primary function of expansin effecting morphogenesis via altered biophysical stress patterns in the meristem. The primordia induced by expansin do not complete the full program of leaf development. We present data indicating that one reason for this might be the inability of exogenous expansin to mimic the endogenous pattern of expansin activity in the meristem. These data provide the first detailed analysis at the cellular level of expansin action on living tissue, the first description of the spectrum of structures induced by expansin on the apical meristem, and give an insight into a potentially fundamental mechanism in plant development.
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Vorbesitzer: Bartholomaeusstift Frankfurt am Main;
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1 Seite
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u.a. Verfügbarkeit der Korrespondenz von Arthur Schopenhauer mit Adam Ludwig von Doss; Biographie Gwinners;
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Vorbesitzer: Dominikanerkloster Frankfurt am Main
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Dank für ein Gedicht, Ludwig Pfau, Übersendung eines Gedichts, Carl Mayer
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"Materialien zum Antisemitismus" (1940-65): Zeitungsausschnitte, Broschüren, Drucksachen; "Die deutschen Arbeiter und Angestellten" (1930-38):; 1. Inhaltsverzeichnisse, Typoskripte, 5 Blatt; 2. Fragebogen zur Erhebung, Druck, 4 Blatt; 3. Statistische Auswertung der Fragebögen; 4. Max Horkheimer: eigenhändige Notzizen zur Erhebung, 1 Blatt; 5. Robert S. Lynd: 1 Brief (Abschrift) an Erich Fromm, New York, 7.2.1938; 6. "Arbeiter und Angestellten-Enquête". Zum Stand der Ausarbeitung, 1937, Typoskript, 3 Blatt; 7. Bibliographien, Typoskripte, 42 Blatt; "Neue Enquêten über Folgen der Arbeitslosigkeit" (1936-37):; 1. Liste der Erhebungen in Österreich, Palestina, USA, 5 Blatt; 2. "Remarque générale sur l'enquête". Typoskript mit eigenhändigen Korrekturen, 9 Blatt; 3. - 6. Protokolle von Familieninterviews in Wien, 1937; 7. "Literatur über die psychologischen Wirkungen der Arbeitslosigkeit" (1936). Typoskript, 15 Blatt; 8. Hilde Oppenheimer-Bluhm: 1 Brief mit Unterschrift an Friedrich Pollock, Jerusalem, 7.12.1936, 1 Blatt; 9. Paul F. Lazarsfeld: "Memorandum Subject: Remarks on the French Questionaire" (12.3.1937). Typoskript, 1 Blatt; 10. Paul F. Lazarsfeld: "Report on the University of Newark Research Center". Als Typoskript vervielfältigt, 9 Blatt; 11. "Publications Directed and Distributed by Bureau of Social Research, Municipal University of Omaha, Omaha, Nebraska". Als Typoskript viervielfältigt, 3 Blatt; 12. Programm zur Conférence Internationale des Sciences Sociales, Paris, 1937, Drucksachen, 3 Blatt; 13. The American Sociological Society: Rundschreiben, Drucksache, 2 Blatt;
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Vorbesitzer: Bernhard Waldschmidt;