Two new species of Microcotyle (Monogenea: Microcotylidae) on intertidal fish from the south Pacific coast

Microcotyle is one of the most diverse and controversial genera within the family Microcotylidae. To date, 131 species have been described in Microcotyle; however, more than half have been transferred to other genera, and several others have poor descriptions. Therefore, less than half of all Microcotyle species may be considered valid. In Chile, two species have been recognized, and unidentified Microcotyle have been found on several littoral fish, but there has been no effort to properly identify them. In this study, two new species of Microcotyle are taxonomically described from intertidal fish of the central (33°S) and south-central (36°S) regions of Chile. In this study, Microcotyle sprostonae n. sp. (collected mainly from Scartichthys viridis in central Chile) and M. chilensis n. sp. (collected mainly from Calliclinus geniguttatus in south-central Chile) were identified based on morphological and molecular analyses (ITS2 and 18S genes). Both species of Microcotyle principally differed from one another and from other valid species in the number of testes and clamps. The two new species also differed from one another by one base pair in the ITS2 and 18S genes and differed from other species of Microcotyle by several base pairs of both genes. Intertidal fish are mostly endemic to the Pacific coast of South America, and they have a limited geographical distribution that does not overlap with the type hosts of other Microcotyle species. Therefore, the two new species described here are distinguished from other congeneric species by morphological, genetic, and biological characteristics

Digital Ricœur

As Ricœur scholars know, the literature by and on Ricœur is vast. Material written by Ricœur that is not collected in published volumes is often difficult to locate, and even in the published volumes it is frequently a challenge to locate where Ricœur discusses a particular topic. Given the amount of his work it can be a challenge too to determine changes in his analyses over the life of his corpus. And locating secondary literature on Ricœur can be equally problematic. In response, we have been working to establish a model for how Ricœur’s corpus might be digitized so that the issues of access, keyword location, and pattern might all be addressed. To develop the model, we are starting with Ricœur’s primary texts in English and plan to expand over time to other languages and to the secondary literature on Ricœur. In the present article we discuss our model and its five steps: digital access; copyright; text preparation for digital searches and analysis; examples of digital searches and analyses; and an archive portal interface that allows users to query based on an extensible set of search variables without needing to know or access the underlying search logic. We also invite interested researchers to help assist the development of this digitization project.Comme le savent les spécialistes de Ricœur, l’œuvre de Ricœur comme la littérature secondaire qui lui est consacrée sont vastes. Les écrits de Ricœur qui ne sont pas réunis dans des volumes publiés sont souvent difficiles à localiser, et même dans les volumes publiés, c’est fréquemment un défi que de localiser dans quels écrits il aborde tel ou tel thème. Étant donné l’ampleur de son œuvre, determiner quels ont été les changement de ses analyses tout au long de son corpus peut aussi constituer un défi. De même, localiser la littérature secondaire sur Ricœur peut s’avérer problématique. En réponse à cela, nous avons travaillé à établir un modèle de numérisation du corpus de Ricœur, de façon à ce que les questions d’accès à l’œuvre, de localisation par mots-clés et de modélisation puissent être toutes solutionnées. Pour developper ce modèle, nous commençons avec les écrits de Ricœur en anglais et nous prévoyons avec le temps d’étendre cette demarche aux écrits du philosophe dans d’autres langues ainsi qu’à la littérature secondaire le concernant. Dans cet article, nous présentons notre modèle dans ses cinq étapes: accès numérique; droits d’auteurs; préparation de textes pour des recherches et des analyses numériques; exemples de recherches et d’analyses numériques; interface de portail destiné aux archives et basée sur un ensemble extensible de variables permettant aux utilisateurs de faire leur recherche sans avoir besoin de connaître ou d’avoir accès à la logique de recherche sous-jacente. Nous invitons également les chercheurs intéressés à contribuer à ce projet de numérisation

EVOCAÇÃO PERNAMBUCANA: O RUBRO VEIO, DE EVALDO CABRAL DE MELLO

O objetivo deste trabalho é fazer uma leitura da narrativa do passado feita por Evaldo Cabral de Mello tendo como ponto de observação o livro Rubro veio: o imaginário da restauração pernambucana. O texto constrói um breve relato da trajetória pessoal e profissional do intelectual que, consequentemente, implicaram na produção historiográfica do autor. Em seguida, com base na obra em questão, procuro perceber os principais pressupostos teóricos de Cabral de Mello, para problematizar otema fundamental de sua obra: a desconstrução da identidade pernambucana

Evocação pernambucana: o Rubro veio, de Evaldo Cabral de Mello

O objetivo deste trabalho é fazer uma leitura da narrativa do passado feita por Evaldo Cabral de Mello, tendo como ponto de observação o texto Rubro veio: o imaginário da restauração pernambucana. O texto constrói um breve percurso da trajetória pessoal e profissional do intelectual que, consequentemente, implicaram na produção historiográfica do autor. Em seguida, com base no texto em questão, procuro perceber os principais pressupostos teóricos de Cabral de Mello para problematizar o tema fundamental de sua obra: a desconstrução de uma identidade pernambucana

Síntese e caracterização do BaTiO3 obtido pelos métodos sol-gel e sol-precipitação

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2020.O objetivo geral deste trabalho é obter pós nanométricos de BaTiO3 através do método sol-gel e sol-precipitação, acompanhados de sua adequada caracterização estrutural, ótica e elétrica para entender seu mecanismo de formação. Os precursores utilizados no método sol-gel foram o Ortotitanato de Tetraisopropil dissolvido em 2-propanol, ácido acético e acetato de bário. As amostras do gel obtidas foram calcinadas a 600°C, 800°C e 1000°C. Pelo método sol-precipitação, os precursores utilizados foram Ortotitanato de Tetraisopropil dissolvido em ácido acético, água deionizada. A esta solução foi adicionada uma solução concentrada de KOH e outra de Acetato de Bário. Os produtos foram caracterizados por DRX, MEV, UV-VIS e espectroscopia de impedância. O resultado dessas análises permitiu observar nas amostras produzidas pelo método sol-gel um aumento da fase tetragonal e da constante dielétrica (15 – 50 em 20Hz) com o aumento da temperatura, enquanto as amostras obtidas por sol-precipitação são cúbicas. A presença do BaCO3 é mais evidente nas amostras produzidas por sol-precipitação e o band-gap dos produtos obtidos não mostrou variação significativa alterando-se o método de síntese (3,363 – 3,594 eV).The general objective of this work is to obtain nanometric powders of BaTiO3 through the sol-gel and sol-precipitation method, accompanied by their proper structural, optical and electrical characterization to understand their formation mechanism. The precursors used in the sol-gel method were Tetraisopropyl Orthotitanate dissolved in 2-propanol, acetic acid and barium acetate. The gel samples obtained were calcined at 600 °C, 800 °C and 1000 °C. Through the sol-precipitation method, the precursors used were Tetraisopropyl Orthotitanate dissolved in acetic acid, deionized water. To this solution was added a concentrated solution of KOH and another of Barium Acetate. The products were characterized by XRD, SEM, UV-VIS and impedance spectroscopy. The results of these analyzes allowed to observe in the samples produced by the sol-gel method an increase in the tetragonal phase and the dielectric constant with the increase in temperature, while the samples obtained by sol-precipitation are cubic. The presence of BaCO3 is more evident in the samples produced by sol-precipitation and the band-gap of the obtained products did not show significant variation, changing the synthesis method (3,363 - 3,594 eV)

Desempenho produtivo de vacas Sindi alimentadas com dietas à base de palma forrageira associada a diferentes fontes de fibra

The objective was to evaluate the production and composition of milk from cows Sindhi, fed palm enriched with urea associated with different sources of fiber. The treatments consisted of different fiber sources: elephant grass, corn stover, hay aerial part of cassava, sugar cane bagasse in natura and sugar cane bagasse hydrolyzate. Five cows Sindi, with average body weight of 265 kg, producing an average of 4.95 kg of milk per day. The animals were arranged in a Latin square design, 5 × 5. Were determined consumption of matter and its constituents, milk production, milk fat, protein, lactose, density, nonfat dry. The cactus can be associated with different forage in diets for lactating cows, however, enriched with urea plus palm, elephant grass, corn straw, hay aerial part of cassava or sugar cane bagasse in natura have higher (P <0.05) milk yield 5.24, 6.09, 4.76 and 4.62 kg, respectively, compared with those fed palm enriched with urea plus sugar cane bagasse hydrolyzate with an average production of 4.04 kg, not (P> 0.05) having, however variation for components of milk. The dry matter intake was lower for treatments where it used the bagasse hydrolyzate and fresh compared to the other treatments.Objetivou-se avaliar a produção e a composição do leite de vacas Sindi, alimentadas com palma enriquecida com uréia associada a diferentes fontes de fibra. Os tratamentos foram compostos de diferentes fontes de fibra: feno de capim elefante, palha de milho, feno da parte aérea da mandioca, bagaço de cana in natura e bagaço de cana hidrolisado. Foram utilizadas cinco vacas Sindi, com peso corporal médio de 265 kg, produzindo em média 4,95 kg de leite por dia. Os animais foram arranjados num delineamento em quadrado latino 5×5. Foram determinados o consumo de matéria e seus constituintes, produção de leite, teor de gordura no leite, proteína, lactose, densidade, extrato seco desengordurado. A palma forrageira pode ser associada a diferentes volumosos em dietas para vacas em lactação, no entanto, palma enriquecida com uréia mais, feno de capim elefante, palhada de milho, feno da parte aérea da mandioca ou bagaço de cana in natura apresentam maior (P<0,05) produção de leite 5,24, 6,09, 4,76 e 4,62 kg respectivamente, comparado às alimentadas com palma enriquecida com uréia mais bagaço de cana hidrolisado com media de produção de 4,04 kg, não (P>0.05) havendo, entretanto variação para os componentes do leite. O consumo de matéria seca foi menor para os tratamentos onde se utilizou o bagaço de cana hidrolisado e o in natura comparada aos demais tratamentos

In Memoriam to Dr. Patricio Arturo Bernal Ponce (1945 - 2022)

His most important contributions to scientific knowledge were in biological and physical oceanography of California and Humboldt Current systems. After retiring from IOC, in 2009 Patricio came back to Chile, where he became the Scientific Director of the Coastal and Ocean Program of CSIRO Australia-Chile. Finally, a cancer initially detected during his stay in California during the 1970’s, won the battle that Patricio fought with all his strength by accepting experimental medical treatments. In one of our last conversations held during June 2022, he told me that the treatment was showing “good signs” of success. He was wrong, and I have no more words to utter for such a splendid and irreplaceable scientist and friend

SSCP-based identification of members within the Pseudoterranova decipiens complex (Nematoda : Ascaridoidea : Anisakidae) using genetic markers in the internal transcribed spacers of ribosomal DNA

The anisakid nematodes morphologically corresponding with Pseudoterranova decipiens sensu lato (s.l.) (Krabbe, 1878) from different seal or sea lion hosts and geographical origins, previously identified as Pseudoterranova krabbei, P. decipiens (s.s.), P. bulbosa, P. azarasi and P. cattani by multilocus enzyme electrophoresis, were characterized using a DNA approach. Also a population of P. decipiens (s.l.) from Chaenocephalus aceratus, the blackfin icefish, from Antarctica and another from Osmerus eperlanus, the European smelt, from Germany were included in the study. The first (ITS-1) and second (ITS-2) internal transcribed spacers (ITS) of ribosomal DNA (rDNA) were amplified by PCR from individual nematodes and analysed by single-strand conformation polymorphism (SSCP), followed by selective sequencing. While no variation in single-stranded ITS-1 and ITS-2 profiles was detected among samples representing each of the species or populations (with the exception of slight microheterogeneity), SSCP analysis of the ITS-2 amplicons allowed the unequivocal differentiation of all of the 5 sibling species of P. decipiens (s.l.) examined, which was supported by sequence differences in ITS rDNA. Samples representing the P. decipiens (s.l.) population from O. eperlanus had the same SSCP profile as those of P. decipiens (s.s.), which was supported by a lack of nucleotide difference in the ITS between them, suggesting that the former represented P. decipiens (s.s.). Based on SSCP results and ITS sequence data, P. decipiens (s.l.) from C. aceratus was genetically most distinct with respect to all other members of Pseudoterranova examined, which indicated that it may represent P. decipiens E (based on geographical origin) or a distinct species. These findings and the molecular approach taken should have important implications for studying the life-cycles, transmission patterns, epidemiology and population genetics of these anisakid nematodes, and the diagnosis of their infections

Análise da evolução da mancha urbana da cidade de Santo Amaro-BA, por meio de ortofotografias nos anos de 1998 e 2010 / Analysis of the evolution of the urban spot of the city of Santo Amaro-BA, by means of orthophotos in the years 1998 and 2010

Após a segunda metade do século XX, o Brasil apresentara um sucessivo aumento demográfico, a marcar-se pelo consecutivo aumento da população urbana, ao qual, em 1980 torna-se um país majoritariamente urbano, com taxa de urbanização de aproximadamente 67%. Associado a isso, ocorre não somente um aumento no número de cidades, como também, há um notável crescimento territorial destes centros urbanos pelo país. Entende-se a expansão urbana como sendo um processo comumente presente em toda cidade desde o momento de sua existência, ao qual, pode realizar-se com maior ou menor intensidade. Independente do grau de intensidade em que ocorra este processo, o mesmo, propenderá à um crescimento. Acréscimo este que pode ser demográfica ou territorial. Assim, o presente trabalho tem por objetivo analisar a evolução da mancha de ocupação da cidade de Santo Amaro, Bahia nos anos de 1998 e 2010, por meio do mapeamento da ocupação urbana, a partir de técnicas de geoprocessamento. Os resultados permitiram estimar as transformações da mancha urbana entre 1998 e 2010, de modo que, verificou-se um aumento de 25% em área edificada. Apresentando pequenas áreas de expansão do tecido urbano edificado em torno das vias, a caracterizar-se por uma aparência tentacular, bem como, identificou-se ter havido ainda ao longo dos doze anos, sobretudo, um crescimento predominantemente intensivo nas áreas já consolidadas da cidade