887 resultados para Mackinac Island (Mich.)


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Imprecise manipulation of source code (semi-parsing) is useful for tasks such as robust parsing, error recovery, lexical analysis, and rapid development of parsers for data extraction. An island grammar precisely defines only a subset of a language syntax (islands), while the rest of the syntax (water) is defined imprecisely. Usually, water is defined as the negation of islands. Albeit simple, such a definition of water is naive and impedes composition of islands. When developing an island grammar, sooner or later a programmer has to create water tailored to each individual island. Such an approach is fragile, however, because water can change with any change of a grammar. It is time-consuming, because water is defined manually by a programmer and not automatically. Finally, an island surrounded by water cannot be reused because water has to be defined for every grammar individually. In this paper we propose a new technique of island parsing - bounded seas. Bounded seas are composable, robust, reusable and easy to use because island-specific water is created automatically. We integrated bounded seas into a parser combinator framework as a demonstration of their composability and reusability.

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Salmonella typhimurium can colonize the gut, invade intestinal tissues, and cause enterocolitis. In vitro studies suggest different mechanisms leading to mucosal inflammation, including 1) direct modulation of proinflammatory signaling by bacterial type III effector proteins and 2) disruption or penetration of the intestinal epithelium so that penetrating bacteria or bacterial products can trigger innate immunity (i.e., TLR signaling). We studied these mechanisms in vivo using streptomycin-pretreated wild-type and knockout mice including MyD88(-/-) animals lacking an adaptor molecule required for signaling via most TLRs. The Salmonella SPI-1 and the SPI-2 type III secretion systems (TTSS) contributed to inflammation. Mutants that retain only a functional SPI-1 (M556; sseD::aphT) or a SPI-2 TTSS (SB161; DeltainvG) caused attenuated colitis, which reflected distinct aspects of the colitis caused by wild-type S. typhimurium: M556 caused diffuse cecal inflammation that did not require MyD88 signaling. In contrast, SB161 induced focal mucosal inflammation requiring MyD88. M556 but not SB161 was found in intestinal epithelial cells. In the lamina propria, M556 and SB161 appeared to reside in different leukocyte cell populations as indicated by differential CD11c staining. Only the SPI-2-dependent inflammatory pathway required aroA-dependent intracellular growth. Thus, S. typhimurium can use two independent mechanisms to elicit colitis in vivo: SPI-1-dependent and MyD88-independent signaling to epithelial cells and SPI-2-dependent intracellular proliferation in the lamina propria triggering MyD88-dependent innate immune responses.

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Salmonella enterica subspecies 1 serovar Typhimurium (serovar Typhimurium) induces enterocolitis in humans and cattle. The mechanisms of enteric salmonellosis have been studied most extensively in calf infection models. The previous studies established that effector protein translocation into host cells via the Salmonella pathogenicity island 1 (SPI-1) type III secretion system (TTSS) is of central importance in serovar Typhimurium enterocolitis. We recently found that orally streptomycin-pretreated mice provide an alternative model for serovar Typhimurium colitis. In this model the SPI-1 TTSS also plays a key role in the elicitation of intestinal inflammation. However, whether intestinal inflammation in calves and intestinal inflammation in streptomycin-pretreated mice are induced by the same SPI-1 effector proteins is still unclear. Therefore, we analyzed the role of the SPI-1 effector proteins SopB/SigD, SopE, SopE2, and SipA/SspA in elicitation of intestinal inflammation in the murine model. We found that sipA, sopE, and, to a lesser degree, sopE2 contribute to murine colitis, but we could not assign an inflammation phenotype to sopB. These findings are in line with previous studies performed with orally infected calves. Extending these observations, we demonstrated that in addition to SipA, SopE and SopE2 can induce intestinal inflammation independent of each other and in the absence of SopB. In conclusion, our data corroborate the finding that streptomycin-pretreated mice provide a useful model for studying the molecular mechanisms of serovar Typhimurium colitis and are an important starting point for analysis of the molecular events triggered by SopE, SopE2, and SipA in vivo.

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Boberach: Ein jüdischer Einwohner Frankfurts, dem nach einem Aufenthalt von 21 Jahren zunächst das Frankfurter Bürgerrecht in Aussicht gestellt worden war, beschwert sich darüber, daß er wegen seines Auftretens in Volksversammlungen verhaftet und ausgewiesen wurde und verlangt ein Gerichtsverfahren oder Genugtuung, nachdem er sich um Schutz durch seine württembergische Heimatbehörde bemüht hat

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Welsch (Projektbearbeiter): Biographische Selbstdarstellung Max von Gagerns nach seiner Wahl zum Volksvertreter der Frankfurter Nationalversammlung

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Welsch (Projektbearbeiter): Proklamation der Wahl Erzherzog Johanns zum deutschen Reichsverweser (Leitung der provisorischen Zentralgewalt) durch die Deutsche Nationalversammlung

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Welsch (Projektbearbeiter): Protest gegen die Verabschiedung des Bürgerwehrgesetzes durch die Nationalversammlung (13. Oktober 1848), die die Bürgerwehr zu einer de-facto-Hilfstruppe der Polizei macht

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Welsch (Projektbearbeiter): Programm des Abgeordneten-Kandidaten Koester aus Sillmenau bei Breslau: Bekenntnis zur oktroyierten Verfassung, Ablösung der grundherrlichen Lasten und Abgaben, Wahl der Pfarrer und Lehrer durch die Gemeinden, keine Trennung von Schule und Kirche, Erschwerung des Zuzugs und der Gründung von Familien für Landfremde, Regulierung der Oder, solide Haushaltspolitik

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Welsch (Projektbearbeiter): Erzherzog Johanns Erklärung an die österreichische Bevölkerung, das ihm übertragene Amt des Reichsverwesers anzunehmen und mit der nach Wien entsandten Deputation der Nationalversammlung nach Frankfurt/Main zu gehen. Bekenntnis zur Einheit Deutschlands

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Welsch (Projektbearbeiter): Gedicht eines unbekannten Verfassers, in dem 'der liebe Fritz' (König Friedrich Wilhelm IV. von Preußen) dem Despotismus abschwört: "Erkannt hab' ich, daß nur des Volkes Liebe, Die wahre Stütze sei, für meinen Thron!". (Man vgl. damit das kurz zuvor erschienene Flugblatt: 'An meinen lieben Fritz am 7. Juni 1848: Eine Geisterstimme' (Sf 16/109, Nr. 7))

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Welsch (Projektbearbeiter): Satirische Kommentierung der Verabschiedung des Bürgerwehrgesetzes durch die Preußische Nationalversammlung. Hintergrund: Der Linken war es nicht gelungen, "Landwehr und stehendes Heer in einer allgemeinen Volksbewaffnung aufgehen zu lassen", außerdem "verlor sie durch Auflösung der fliegenden Korps der Studenten, Künstler, Arbeiter und Handwerksgesellen eine ihrer wichtigsten Stützen". [Nitschke 1995, 131]