1,963 research outputs found

    Scorpaenodes africanus Pfaff 1933

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    Scorpaenodes africanus Pfaff, 1933 SMNS 25256 (1 specimen) and UFES 145 (1 specimen) from Lagoa Azul, Figure 7.Published as part of Peter Wirtz, Carlos Eduardo L. Ferreira, Sergio R. Floeter, Ronald Fricke, Joao Luiz Gasparini, Tomio Iwamoto, Luiz Rocha, Claudio L. S. Sampaio & Ulrich K. Schliewen, 2007, Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update., pp. 1-48 in Zootaxa 1523 on page

    Ivan Pfaff: Francie a Čechy v Evropě národních států. Francouzská politika F. L. Riegra 1867–1878

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    Ivan Pfaff: Francie a Čechy v Evropě národních států. Francouzská politika F. L. Riegra 1867–1878. Praha: Euroslavica, 2013, 260 str

    J. B. L. Tolhurst. — Introduction to the English Monastic Breviaries Réimpr. de l'éd. de 1942, Woodbridge, Boydell & Brewer, 1993 (Henry Bradshaw Soc., 80) / Alicia Corrêa, éd. — The Durham Collectar. Woodbridge, Boydell & Brewer, 1992 (Henry Bradshaw Soc., 107)

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    Pfaff Richard W. J. B. L. Tolhurst. — Introduction to the English Monastic Breviaries Réimpr. de l'éd. de 1942, Woodbridge, Boydell & Brewer, 1993 (Henry Bradshaw Soc., 80) / Alicia Corrêa, éd. — The Durham Collectar. Woodbridge, Boydell & Brewer, 1992 (Henry Bradshaw Soc., 107). In: Cahiers de civilisation médiévale, 39e année (n°153-154), Janvier-juin 1996. La recherche sur le Moyen Age à l'aube du vingt-et-unième siècle, sous la direction de Piotr Skubiszewski. pp. 166-167

    On the Convex Pfaff-Darboux Theorem of Ekeland and Nirenberg

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    The classical Pfaff-Darboux theorem, which provides local 'normal forms' for 11-forms on manifolds, has applications in the theory of certain economic models [Chiappori P.-A., Ekeland I., Found. Trends Microecon. 5 (2009), 1-151]. However, the normal forms needed in these models often come with an additional requirement of some type of convexity, which is not provided by the classical proofs of the Pfaff-Darboux theorem. (The appropriate notion of 'convexity' is a feature of the economic model. In the simplest case, when the economic model is formulated in a domain in Rn\mathbb{R}^n, convexity has its usual meaning.) In [Methods Appl. Anal. 9 (2002), 329-344], Ekeland and Nirenberg were able to characterize necessary and sufficient conditions for a given 1-form ω\omega to admit a convex local normal form (and to show that some earlier attempts [Chiappori P.-A., Ekeland I., Ann. Scuola Norm. Sup. Pisa Cl. Sci. 4 25 (1997), 287-297] and [Zakalyukin V.M., C. R. Acad. Sci. Paris S\'er. I Math. 327 (1998), 633-638] at this characterization had been unsuccessful). In this article, after providing some necessary background, I prove a strengthened and generalized convex Pfaff-Darboux theorem, one that covers the case of a Legendrian foliation in which the notion of convexity is defined in terms of a torsion-free affine connection on the underlying manifold. (The main result of Ekeland and Nirenberg concerns the case in which the affine connection is flat.

    Nematogobius brachynemus Pfaff 1933

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    <p>Nematogobius brachynemus Pfaff, 1933</p> <p>ZSM 34189 (10 specimens from Lagoa Azul, intertidal); ZSM 34188 (6 specimens from Lagoa Azul, intertidal); ZSM 34190 (20 specimens from Lagoa Azul, intertidal); UFES 134 and 135 (1 specimen each, from Sao Tome, no precise location data); ZSM 34733 (1 specimen from Príncipe, no precise location data); SMNS 23070 (5 specimens together with 4 Bathygobius burtoni from Sao Tomé City); SMNS 23067 (1 specimen together with 1 Bathygobius burtoni from Sao Tomé City); SMNS 23078 (4 specimens together with 10 Bathygobius burtoni from Rolas Island); Figure 23.</p>Published as part of <i>Peter Wirtz, Carlos Eduardo L. Ferreira, Sergio R. Floeter, Ronald Fricke, Joao Luiz Gasparini, Tomio Iwamoto, Luiz Rocha, Claudio L. S. Sampaio & Ulrich K. Schliewen, 2007, Coastal Fishes of Sao Tome and Principe islands, Gulf of Guinea (Eastern Atlantic Ocean) - an update., pp. 1-48 in Zootaxa 1523</i> on page 2

    'Kristen Hovers At The Edge': First Chapter of 'I Know How To Live': The Life of Kristen Pfaff (with an afterword by Jason Pfaff).

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    Opening chapter of biography of Kristen Pfaff by Guy Mankowski. ‘Mankowski, through painstaking research, has given a powerful voice to one of our lesser understood musical forces. A brilliant, alternative look at the 90s music scene.’ Lucy Nichol, author of The 27 Club. </p

    Bounding the degree of solutions to Pfaff equations

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    We study hypersurfaces of complex projective manifolds which are invariant by a foliation, or more generally which are solutions to a Pfaff equation. We bound their degree using classical results on logarithmic forms

    Sport als Heimat? Möglichkeiten biographischer Navigation in Zuwanderungsgesellschaften

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    Kleindienst-Cachay C, Pfaff-Czarnecka J. Sport als Heimat? Möglichkeiten biographischer Navigation in Zuwanderungsgesellschaften. In: Meier H, Riedl L, Kukuk M, eds. Migration, Inklusion und Integration. Soziologische Beobachtungen des Sports. Baltmannsweiler: Schneider Verlag Hohengehren; 2016: 141-168

    Pfaff, D. Estrogens and brain function

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    Donald W. Pfaff. Estrogens and brain function: neural analysis of a hormone-controlled mammalian reproductive behavior By integrating a vast array of empirical findings, this book advances the frontier of knowledge about estrogen’s effects on nerve cells and behavior. Systematically examining the effects of estrogen on the neural circuitry underlying reproductive behavior, the author uses electrophysiological, neuroanatomical, and neuroendocrine experimental techniques to develop a complete analysis of the mechanisms for essential mammalian mating behavior. Based on an extensive research program, Estrogens and Brain Function traces the pathways that control lordosis behavior. This book also describes the anatomical basis of hormonal accumulations in the brain and illustrates how these hormones alter neural circuits. Both the methods and the results delineated here promise to have an important impact on future investigations of brain mechanisms of mental and behavioral states.https://digitalcommons.rockefeller.edu/ru-authors/1147/thumbnail.jp
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