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Jules Vernes literarische Thematisierung der Kanarischen Inseln als Hommage an Alexander von Humboldt
Georg Schifko
HiN. Alexander von Humboldt im Netz , 2010,
Abstract: Article in German. AbstractJules Verne’s very short literary treatment of the Canary Islands underlines his talent as a science novelist. It also reveals him to be a great admirer of Alexander von Humboldt.
Ο Κυαν δε ν σοι στ ν στορ α το Κριτ βουλου  [cached]
Στυλιαν?? ΛΑΜΠΑΚΗΣ
Byzantina Symmeikta , 1996,
Abstract: St. Lampakis Die Kyanidischen Inseln im Kritobuls GeschichtswerkDie sogennanten 'Kyanidischen' Inseln im Kritobuls Geschichtswerk (2.4.2, Reinsch Ausgabe 92) sind wahrscheinlich zwei kleine Inseln, die sich n rdlich von Tenedos befinden. Sie waren im Altertum mit den Namen ‘Καλ δναι' bekannt, w hrend ihre moderne Bezeichnung ‘Λαγο σαι' oder Μαυρια ist.
On the first tachinid fly (Diptera, Tachinidae) carrying Asclepiadoideae pollinaria in the Neotropical Region
Nihei, Silvio Shigueo;Schwarz, Elizabeth de Araujo;
Revista Brasileira de Entomologia , 2011, DOI: 10.1590/S0085-56262011005000031
Abstract: on the first tachinid fly (diptera, tachinidae) carrying asclepiadoideae pollinaria in the neotropical region. this paper reports the first neotropical tachinidae species possibly associated to pollination of asclepiadoideae: a female of euacaulona sumichrasti townsend, 1908 (diptera, tachinidae, phasiinae, trichopodini) carrying pollinaria of gonolobus parviflorus decne., 1844 (apocynaceae, asclepiadoideae, asclepiadeae: gonolobinae) attached to its proboscis. the fly specimen was collected in paraguay, departamento canindeyú. the pollinarium is illustrated and described herein. this represents the first anthophilous record to g. parviflorus and to the genus.
Primeiro registro de simuliidae (Diptera) com polinários de asclepiadoideae (Apocynaceae)
Medeiros, Jansen F.;Rapini, Alessandro;Barbosa, Ulysses C.;Py-Daniel, Victor;Braga, Pedro I.S.;
Neotropical Entomology , 2008, DOI: 10.1590/S1519-566X2008000300015
Abstract: the presence of pollinaria of two species of asclepiadoideae (apocynaceae), possibly tassadia cf. martiana decne. and t. cf. obovata decne., attached to the mouth parts of simulid black flies [cerqueirellum amazonicum (goeldi), c. argentiscutum (shelley & luna dias), c. oyapockense (floch & abonnenc), and cerqueirellum sp.] are reported for the first time. the frequency and distribution of simulids recorded with pollinaria suggest that removal of pollinaria by these flies is not casual. simulids probably use nectar in flowers of asclepiadoideae as source of sugar, being able to remove their pollinaria. this finding demonstrates that simulids are not only vector of pathogenic parasites, but also carry pollinaria, and thus may represent a group of pollinators for species of asclepiadoideae with small flowers.
Taxonomy "under construction": advances in the systematics of Apocynaceae, with emphasis on the Brazilian Asclepiadoideae
Rapini, Alessandro;
Rodriguésia , 2012, DOI: 10.1590/S2175-78602012000100007
Abstract: the apocynaceae comprise approximately 5,000 species and are widely distributed. the family belongs to the gentianales and can be easily recognized by the presence of latex and a style-head derived from the fusion of two carpels at the apex of the styles. the largest subfamily in apocynaceae is asclepiadoideae. treated as the asclepiadaceae for almost two centuries, it comprises about 3,000 species and is defined by stamens with bisporangiate anthers and pollen transferred in specialized units called pollinaria. since the 19th century, floristic studies and taxonomic monographs have significantly contributed to the taxonomy of brazilian asclepiadoideae. nevertheless, advances in understanding the internal relationships in the subfamily were not done until this millennium, with the popularization of phylogenetic studies based on molecular data and powerful computer analyses. advances in the systematics of apocynaceae have provided new interpretations on the morphological evolution and biogeography of the family and have led to important changes in its classification. nevertheless, several taxonomic rearrangements are still needed and it can be said that the taxonomy of apocynaceae is "under construction". in this article, the major taxonomic changes in the family are reviewed, with special attention given to the systematics of neotropical groups. a cladogram of the apocynaceae is presented, which highlights the phylogenetic position of the brazilian genera and their diversity in number of native species. the main studies and the diversity of asclepiadoideae in brazil are summarized and perspectives for future research on the subfamily are presented.
Two new species in the Matelea stenopetala complex (Apocynaceae, Asclepiadoideae) from the Guiana Shield and Amazonian Brazil  [cached]
Alexander Krings,Gilberto Morillo
PhytoKeys , 2012, DOI: 10.3897/phytokeys.17.3485
Abstract: Two new species in the Matelea stenopetala complex (Apocynaceae, Asclepiadoideae) are described from the Guiana Shield and Amazonian Brazil: Matelea brevistipitata Krings & Morillo, sp. nov. and M. trichopedicellata Krings & Morillo, sp. nov. The new species belong to a small group of adaxially-pubescent-flowered taxa within the complex, including M. hildegardiana and M. pakaraimensis. The new species are described and a dichotomous key is provided.
Jorge Fontanella-Pereyra,Margot Valle Ferreira
Bonplandia , 2010,
Abstract: A taxonomic revision of the Brazilian species of the genus Macroditassa Malme (Apocynaceae-Asclepiadoideae) is presented. The genus belongs to the subfamily Asclepiadoideae R.Br. ex Burnett, tribe Asclepiadeae (R.Br.) Duby, subtribe Metastelmatinae Endl. ex Meisn. and is the most closely related to the Ditassa R.Br. genus. Macroditassa has 14 taxa of which 11 are found in Brazil, where they occurr in the Atlantic forest, disturbed areas, clearings and gullies, "cerrado", "cerradao", "campo rupestre", "campos" (high-altitude savannas) and sandy coast plains ("restingas"). In this paper the identification key of the taxa, descriptions and illustrations, data on flowering and fruiting, as well as maps showing the geographic distribution are presented Uma abordagem taxonómica das especies brasileiras do género Macroditassa Malme (Apocynaceae-Asclepiadoideae) é apresentada. O género pertence á subfamilia Asclepiadoideae R.Br. ex Burnett, tribo Asclepiadeae (R.Br.) Duby, subtribo Metastelmatinae Endl. Ex Meisn., sendo assim mais estreitamente afim a Ditassa R.Br. Macroditassa conta, atualmente, com 14 táxons, dos quais 11 ocorrem no Brasil sendo encontrados em floresta atlántica, em áreas perturbadas, clareiras, depressóes, cerrado, cerradáo, campos rupestres, campos de altitude e em restingas. Neste trabalho sáo fornecidas chaves para identificacáo, descricóes e ilustracóes, dados sobre a floracáo e frutificacáo, assim como a distribuicáo geográfica, utilizando-se mapas e ilustracóes
Aristóteles, Crisipo y el problema de la generación de los cuerpos homogéneos complejos
Salles, Ricardo;
Signos filosóficos , 2008,
Abstract: the main purpose of this paper is to examine the reaction of aristotle and the stoic chrysippus to a metaphysical problem that has been overlooked in recent studies of ancient physics. the problem concerns the generation of the so-called homogeneous complex bodies. if, as these authors maintain, such bodies are generated by a mixture of more basic bodies, and if they are destroyed when this mixture is dissolved and the original ingredients separate themselves from each other, then, a dilema seems to arise: during the existence of the complex body (i) either the simple bodies persist as such within the complex body, in which case it appears that this latter could not be homogeneous, (ii) or the simple bodies are destroyed when the complex body is generated, in which case an explanation is needed of how the former obtain again when the latter is dissolved. at the end, i also offer an analysis of how chrysippus gives support to the thesis itself that complex homogeneous bodies are the result of a mixture of simpler bodies. the whole is preceded by an account of how his theory of mixture fits with his general theory of the generation of natural bodies.
Primeros desarrollos de la teoría estoica del destino
Gómez Espíndola,Laura Liliana;
Estudios de Filosofía , 2012,
Abstract: the goal of this article is to clarify the first developments of zeno, cleanthes and chrysippus' theory of fate. in the course of the argumentation it will be clear that all of them considered fate as identical to divine reason, the active principle of nature responsible for moving and qualifying matter. on those grounds it will be argued, on the one hand, that they held that fate is part of the intrinsic nature of the world and, on the other hand, that fate has a universal scope, since all the movements and the qualitative states of the world, even in their smallest details, are produced by divine reason. finally it will be shown that, according to the first developments of the three heads of the school, fate has a fatalistic mechanism in the production of human life's events.
Ideas y Valores , 2010,
Abstract: the paper addresses two questions regarding the interpretation of akrasia among the stoics, offered by marcelo boeri in his book appearance and reality in greek thought: on the one hand, can chrysippus's monistic adaptation of the platonic model of the divided soul set forth in book iv of the republic provide a philosophically satisfactory explanation of the classical phenomenon of akrasia? on the other hand, is this phenomenon the true explanandum of this adaptation? the paper shows that the answer to both these questions could be negative and thus different from the answer provided by boeri in his book. the argument is based on the analysis of plutarch vm 446f-447b and on the analysis of the classical problem of akrasia.

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