1,721,270 research outputs found
Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas
Full text linkBEASLEY, C.R., DE QUADROS MIRANDA, L., ALVES, S.T.M., MELO, A.G., SOUZA, J.O. & C.H. TAGLIARO: Brood size and larval length of Paxyodon syrmatophorus (Bivalvia, Hyriidae) from the Tocantins river, Brazil 173-184 LIN, D.S.C. & É. PELLEGRINI-CARAMASCHI: Seasonal and diel stability of limnological parameters and habitat structure in a floodplain lake silted by bauxite tailings (Lago Batata, Pará, Brazil) 185-202 LOURENÇO, W.R.: Scorpion diversity and endemism in the Rio Negro region of Brazilian Amazonia, with the description of two new species of Tityus C.L. KOCH (Scorpiones, Buthidae) 203-213 CASTILHO, A.C. DA COSTA, MARQUES, M.I., ADIS, J. & A.D. BRESCOVIT: Seasonal and vertical distribution of Araneae in an area with predominance of Attalea phalerata MART. (Arecaceae), in the Pantanal of Poconé, Mato Grosso, Brazil. [in Portuguese] 215-239 LOURENÇO, W.R., ADIS, J. & J. DE S. ARAÚJO: A new synopsis of the scorpion fauna of the Manaus region in Brazilian Amazonia, with special reference to an inundation forest at the Tarumã Mirím river 241-249 BARBOSA, M.G.V., HENRIQUES, A.L., RAFAEL, J.A. & C.R.V. DA FONSECA: Species diversity and similarity between sites in Tabanidae (Insecta: Diptera) of a terra firme forest (Adolpho Ducke Reserve) in Central Amazonia, Brazil. [in Portuguese] 251-266 CONTRERAS‑RAMOS, A., FIORENTIN, G.L. & Y. URAKAMI: A new species of alderfly (Megaloptera: Sialidae) from 267-272 GOLOVATCH, S.I., HOFFMAN, R.L., ADIS, J., MARQUES, M.I., RAIZER, J., SILVA, F.H.O., RIBEIRO, R.A.K., SILVA, J.L. & T.G. PINHEIRO: Millipedes (Diplopoda) of the Brazilian Pantanal 273-288 CAZORLA, C.C., SPINELLI, G.R. & F. DÍAZ: Two new species of the subgenus Stilobezzia (Stilobezzia) KIEFFER from Peruvian Amazonia (Diptera: Ceratopogonidae) 289-297 GOCH, Y.G.F., KRUMME, U., SAINT‑PAUL, U. & J.A.S. ZUANON: Seasonal and diurnal changes in the fish fauna composition of a mangrove lake in the Caeté estuary, north Brazil 299-315 WIEDENBRUG, S. & R. OSPINA‑TORRES: A key to pupal exuviae of Neotropical Tanytarsini (Diptera: Chironomidae) 317-371 FRANCESCHINI, M.C. CAPELLO, S., LHANO, M.G., ADIS, J. & M.L. DE WYSIECKI: Morphometry of the nymphal stages in Cornops aquaticum (Acrididae: Leptysminae) from Argentina. [in Spanish] 373-386 WANTZEN, K.R., ROSA, F.R., NEVES, C.O. & C. NUNES DA CUNHA: Leaf litter addition experiments in riparian ponds with different connectivity to a Cerrado stream in Mato Grosso, Brazil 387-396 LHANO, M.G., ADIS, J., MARQUES, M.I. & L.D. BATTIROLA: Cornops aquaticum (Orthoptera, Acrididae, Leptysminae): food plant acceptance in nymphs living on Eichhornia azurea in the northern Pantanal, Brazil. [in Portuguese] 397-404 SCHALLER, F.: ERRATUM: AMAZONIANA XVI(3/4): 483-486, 2001: 40
Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas
Full text linkMELO, S., HUSZAR, V.L.M., ROLAND, F., ESTEVES, F.A. & R. BOZELLI: Phytoplankton diel variation and vertical distribution in two Amazonian flood-plain lakes (Batata Lake and Mussurá Lake, Pará-Brasil) with different mixing regimes 1-10 RODRÍGUEZ, G. & H. SUÁREZ: A revision of the freshwater crabs of the family Pseudothelphusidae (Decapoda: Brachyura) from Peru with notes on the the southern limits of the family 11-28 PAROLIN, P., ADIS, J., RODRIGUES, W.A., AMARAL, I. & M.T.F. PIEDADE: Floristic study of an igapó floodplain forest in Central Amazonia, Brazil (Tarumã-Mirim, Rio Negro) 29-47 GOLOVATCH, S.I. & R.L. HOFFMAN: On two new chelodesmid millipedes from Amapá, Brazil (Diplopoda, Polydesmida, Chelodesmidae) 49-55 GOLOVATCH, S.I., HOFFMAN, R.L., ADIS, J., SPELDA, J., VOHLAND, K. & D. SEITZ: The millipede subfamily Aphelidesminae in Amazonia (Diplopoda, Polydesmida, Aphelidesmidae) 57-73 CAZORLA, C.G. & P.I. MARINO: The pupa of Stilobezzia punctulata LANE from Peruvian Amazonia (Diptera: Ceratopogonidae) 75-80 ENRICH-PRAST, A., MEIRELLES-PEREIRA, F. & F.A. ESTEVES: Development of periphytic bacteria associated with detritus of the Amazonian aquatic macrophyte Oryza glumaepatula 81-93 ARBELÁEZ, F., GÁLVIS, G., MOJICA, J.I. & S. DUQUE: Composition and richnes of the ichthyofauna in a terra firme forest stream of the Colombian Amazonia 95-107 FONSECA LEAL, J.J., ESTEVES, F.A. & M. CALLISTO: Distribution of Chironomidae larvae in an Amazonian flood-plain lake impacted by bauxite tailings (Brazil) 109-123 CAPELLO, S., MARCHESE, M. & I. EZCURRA DE DRAGO: Decomposition and invertebrate colonization of Salix humboldtiana leaf litter on the Middle Paraná River floodplain [in Spanish] 125-143 SCHÖLLER, M.: A new species in the formerly monotypic genus Heptarthrius SUFFRIAN (Chrysomelidae: Cryptocephalinae) 145-149 MEDVEDEV, L.N.: A new species of Myochrous DEJEAN, 1837 from Brazil (Coleoptera, Chrysomelidae, Eumolpinae) 151-155 BERGHOLZ, N.G.R., ADIS, J. & S.I. GOLOVATCH: New records of the millipede Myrmecodesmus hastatus (SCHUBART, 1945) in Amazonia of Brazil (Diplopoda: Polydesmida: Pyrgodesmidae) 157-161 SCHALLER, F.: Nachruf/Obituary Prof. Dr. Harald Felix Ludwig Sioli (1910-2004) 163-168 ANONYMOUS: Prof. Dr. Harald Sioli in memoriam 169-17
Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas
Full text linkSumário / Inhalt / Contents JUNK, W.J.: Preface 33 VEGAS-VILARÚBIA, T., PONCE, M.E., GÓMEZ, O. & L. MORA: Wetland vegetation of the lower Orinoco Delta plain (Venezuela): A preliminary approach 35 SCHELLER, U.: New records of Pauropoda and Symphyla (Myriapoda) from Brazil with description of new species in Allopauropus, Hanseniella and Ribautiella from the northern Pantanal wetland and from Mato Grosso of Brazil 63 LOURENÇO, W.R. & E. APARECIDA DA SILVA: New evidence for a disrupted distribution pattern of the 'Tityus confluens' complex, with the description of a new species from State of Pará, Brazil (Scorpiones, Buthidae). 77 PUTHZ, V.: Neue Stenus-Arten, vorwiegend aus dem Amazonasgebiet (Coleoptera: Staphylinidae). 87 PUTHZ, V.: New Noetropical Edaphus-species (Coleoptera: Staphylinidae). 97 MARQUES, M.I., ADIS, J., BATTIROLA, L.D., BRESCOVIT, A.D., SILVA, F.H.O. & J.L. SILVA: Composição da comunidade de artrópodes associada à copa de Calophyllum brasiliense (Guttiferae) no Pantanal, Mato Grosso, Brasil. 131 FRANCESCHINI, M.C., ADIS, J., POI DE NEIFF, A. & M.L. DE WYSIECKI: Fenología de Cornops aquaticum (Orthoptera: Acrididae) en un camalotal de Eichhornia azurea (Pontederiaceae) en Argentina. 149 NUNES DA CUNHA, C., Junk, W.J. & H.F. LEITÃO-FILHO: Woody vegetation in the Pantanal of Mato Grosso, Brazil: a preliminary typology. 159 RÄTSCH, G. & K. HAASE: Anatomic prerequisites for internal root aeration of three tree species of the Amazonian inundation forest. 185 BOEGER, M.R.T. & J. ADIS: Anatomia de cinco espêcies de macrófitas aquáticas e sua importância para Cornops aquaticum (Orthoptera, Acrididae, Leptysminae 199 CAPELLO, S., ADIS, J. & M.L. DE WYSIECKI: Temperatura y fotoperiodo: qué influencia ejercen en el desarrollo ninfal de Cornops aquaticum (Orthoptera, Acrididae 209 JUNK, W.J.: POR, F.D., IMPERATRIZ-FONSECA, V.L. & F. LENCIONI NETO: Biomes of Brazil: An Illustrated Natural History. - Book review 217 JUNK, W.J.: TUDORANCEA, C. & M.M. TUDORANCEA: Danube Delta: Genesis and Biodiversity. - Book review 219 PANOV, E.N. & S.I. GOLOVATCH: WALKER, I.: The evolution of biological organization as a function of information. - Book review 223 BRAGA, C.E. & J. ADIS: Pontederia rotundifolia (Pontederiaceae): host plant of Cornops brevipenne (Leptysminae: Acrididae: Orthoptera). - Scientific note 225 BRAGA, C.E., NUNES, A.L. & J. ADIS: Cornops frenatum frenatum (MARSCHALL, 1836) (Orthoptera: Acrididae: Leptysminae): Ocorrência e oviposição em quatro espécies de Heliconia (Heliconiaceae) na Amazônia Central, Brasil. - Nota Científica 227 JUNK, W.J.: SIOLI, H.: Gelebtes, geliebtes Amazonien: Forschungsreisen im brasilianischen Regenwald zwischen 1940 und 1962. - Buchbesprechung 233 ANONYMUS: Contents of Amazoniana Volumes 1 (1965) - 19 (2007) 23
Sperm ultrastructure of Mantophasma zephyra (Insecta, Mantophasmatodea)
No full textThe ultrastructure of Mantophasma zephyra spermatozoa is described. Sperm cells have a trilayered acrosome with conspicuous extra-acrosomal material which expands along the nucleus. The nucleus is crossed anteriorly by a canal and its posterior end is embedded in the centriole adjunct material. A centriole with microtubular triplets is present. The flagellum has a 9+9+2 axonernal pattern, two partially crystallised mitochondrial derivatives, two membranous sacs and three connecting bands. The accessory microtubules are filled with dense material and have 16 protofilaments in their tubular wall. The intertubular material is not very expanded. In the seminal vesicles spermatozoa are stuck together to form spermatodesms, and their heads are also joined by adherens junctions. A cladistic analysis based on sperm features indicates a close relationship of Mantophasmatodea with Mantodea
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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