bluuebunny/crossref_metadata_2025_split huggingface dataset:
CARACTERIZAÇÃO FITOSSOCIOLÓGICA DO COMPONENTE HALÓFILO-PSAMÓFILO EM UMA ÁREA DE DUNAS, MARANHÃO, BRASIL
Authors: Santos Catherine Rios , Amorim Ingrid Fabiana Fonseca , Almeida Jr. Eduardo Bezerra de 
Published: June 2021

O presente estudo teve como objetivo analisar o arranjo e distribuição da composição herbácea halófila psamófila em uma área de dunas, com o intuito de destacar a diversidade de espécies e assim contribuir para a conservação da vegetação de dunas. Foi realizada uma análise fitossociológica do estrato herbáceo no período de agosto de 2017 a julho de 2018, no trecho de dunas próximo à faixa da praia de São Marcos. Foram distribuídas, ao longo da área, 50 parcelas de 1m² e foram calculados os parâmetros estruturais para as espécies, além do índice de diversidade de Shannon. Como critério de inclusão para o componente herbáceo foram consideradas as espécies que não apresentaram lignificação em toda sua extensão. Foram identificadas 41 espécies, em 34 gêneros, pertencentes a 18 famílias. As espécies que apresentaram maior Valor de Importância foram Paspalum maritimum, Centrosema brasilianum, Crotalaria retusa, Chamaecrista hispidula e Turnera subulata. Os índices de Shannon (H’) quando calculado com os valores da cobertura foi: H’c =1,58 nats m² e com os valores de frequência foi H’f =3;12 nats m². As espécies que mais se destacaram na área são comuns de ambientes antropizados e apresentam atributos favoráveis aos fatores limitantes encontrados em áreas de dunas.PHYSIOCHLOLOGICAL CHARACTERIZATION OF THE HALOPHILPSAMOPHYL COMPONENT IN A AREA OF DUNAS, SÃO LUIS, MARANHÃO STATE, BRAZILABSTRACTThe objective of present was study had as objective to analyze the arrangement and distribution of the psamophilic herbaceous composition in an area of dunes near the beach line, with the intention of highlighting the diversity of species and thus contributing to the conservation of dune vegetation. A phytosociological analysis of the herbaceous stratum was carried out from August 2017 to July 2018, in the dune stretch near the São Marcos beach strip, municipality of São Luís. A total of 50m2 plots were distributed and the structural parameters randomly for the species and the Shannon diversity index. As inclusion criterion for the herbaceous component, we considered the species are not lignificated along the stem extension. A total of 41 species, 34 genera and 18families were found in the survey area. The species that presented the highest Importance Value were Paspalum maritimum, Centrosema brasilianum, Crotalaria retusa, Chamaecrista hispidula and Turnera subulata. The Shannon indices (H’) when calculated with the coverage values were: H’c =1,58 nats.m-² and with the frequency values of H’f =3;12 nats.m-². The most prominent species in the area are common in anthropic environments and present morphological attributes favorable to common limiting factors in dune areas.Keywords: Anthropisation; Environmental parameters; Herbaceous; Restinga; Conservation.
INVASÃO BIOLÓGICA POR Crotalaria retusa L. (FABACEAE) EM DUNAS NO NORDESTE DO BRASIL
Authors: Santana Ingrid do Bom Parto Araújo , Figueiredo Nivaldo de 
Published: June 2021

O presente estudo tem como objetivo definir se a diversidade local é um dos fatores que levam ao sucesso no estabelecimento de moitas da espécie exótica invasora Crotalaria retusa. O estudo foi realizado nas dunas costeiras da Ilha do Maranhão, no trecho entre as praias de São Marcos e Araçagy. Para tanto, foram selecionadas moitas amostradas pelo método de parcelas múltiplas de Mueller-dombois & Ellenberg, no qual foi amostrado com parcelas de 1mx1m, 40% da cobertura vegetal no interior e no entono das moitas de C. retusa, sendo posteriormente calculados os Índices de Valor de Importância de Cobertura (IVCi) para cada espécie botânica amostrada, diversidade de Shannon – Wienner (H’) e Equabilidade de Pielou (J). A riqueza total de espécies foi de 101 espécies (76 no interior e 81 no entorno). As espécies com maior IVCi no interior e no entorno foram, respectivamente, C. retusa (124,97) e espécimes da família Poaceae (104,83). A diversidade foi de H’ = 2,58 no interior e H’= 2,59 no entorno, enquanto que a equabilidade foi de J=0,59 (no interior e no entorno). Observou-se que a riqueza de espécies no interior da moita aumenta à medida que a cobertura de C. retusa diminui, demostrando que a espécie botânica invasora pode interferir na ocorrência das espécies nativas.BIOLOGICAL INVASION BY Crotalaria retusa L. (FABACEAE) IN DUNE AREAS IN SÃO LUÍS, MARANHÃO, NORTHEAST BRAZILABSTRACTThe present study aims to analyze the structural arrangement of the inside and around of the Crotalaria retusa clumps in dune areas of Ilha do Maranhão. The study was realized out in the coastal dunes of Ilha do Maranhão, in the stretch between the beaches of São Marcos and Araçagi. Therefore, clumps of vegetation sampled by the multiple plot method were selected, in which it wasa sample with plots of 1m2, 40% of the vegetation cover inside and around the C. retusa clumps, and the were calculated Importance Value (IV) for each a sampled botanical species, Shannon – Wienner diversity (H’) e Pielou Equability (J). The total species richness was 101 species (76 inland and 81 inthe around). The species C. retusa had the highest VI in the inside (124,97) and in the around it was the second with the highest VI (59,40). The diversity was H’ = 2,58 nats.m2 on the inside and H’=2,59 nats.m2 on the around, while the equability was J=0,59 (in the inside and the around). It was observed that the species richness inside the clump increases as the coverage of C. retusa decreases, showing the invasive botanical species could interfere with the occurrence of native species.Keywords: Biological contamination; Invasive species; Coastal dunes; Coverage index; Importance value.
FIRST RECORD OF Ctenogobius smaragdus (VALENCIENNES, 1837) (GOBIIFORMES, GOBIIDAE) FOR THE MARANHÃO STATE, BRAZILIAN AMAZON COAST
Authors: Brito Pâmella Silva de , Guimarães Erick Cristofore , Ramos Júnior Clarence de Castro , Ottoni Felipe Polivanov , Nunes Jorge Luiz Silva 
Published: June 2021

ABSTRACTThis study presents the first records of the C. smaragdus in the Maranhão State, found on the Raposa Channel Estuary, Brazilian Amazon Coast. The new record could be justified by use of the inappropriate sampling methods and the focus of ichthyology researches in the Maranhão State. RESUMOO presente estudo registra pela primeira vez Ctenogobius smaragdus para o Estado do Maranhão, o exemplar foi encontrado no canal da Raposa, Costa Amazônica Brasileira. A falta de registro no pretérito pode ser justificada pelo uso de metódos inapropriados e diferentes foco dos estudos localizados no Maranhão.Palavras-chave: Maré; Litoral equatorial; Manguezais; Macromarés; Sistema estuarino.
A STOP FOR A SNACK: apparent humpback whale (Megaptera novaeangliae) feeding behavior and association with gillnets during migration off south-eastern Brazil
Authors: Siciliano Salvatore , Cardoso Júlio , Francisco Arlaine , Moreira Sérgio Carvalho 
Published: June 2021

Baleias-jubarte (Megaptera novaeangliae) migram anualmente desde as águas frias dos polos, onde alimentam-se de krill e pequenos peixes, em direção a regiões tropicais e subtropicais em busca de ambientes favoráveis para reprodução e cria de filhotes. Ainda pouco conhecidos são os casos de baleias-jubarte alimentando-se em áreas de reprodução. Nesse trabalho relatamos as primeiras observações em campo de uma baleia juvenil – yearling, em provável comportamento de forrageamento buscando por prováveis crustáceos ou cefalópodes em curtos mergulhos fundos. São relatadas outras observações semelhantes nas quais das baleias pareciam aproximar-se de redes de emalhe, provavelmente atraídas por peixes ali enredados e disponíveis. Considera-se que em alguns desses casos a aproximação das baleias em direção às redes tenha causado emalhamentos, que pelo menos em um caso o exemplar libertou-se das redes. Em outros casos as redes podem ter causados ferimentos e lesões nas baleias-jubarte. Recomenda-se um acompanhamento dessas interações pela costa brasileira a longo prazo para uma melhor avaliação dessas interações.Palavras-chave: Baleia-jubarte; Enredamento; Forrageamento; Brasil.ABSTRACTHumpback whales (Megaptera novaeangliae) migrate annually from the cold waters of the poles, where they feed on krill, towards subtropical and tropical regions in search of favorable environments for breeding and calving. Cases of humpback whales feeding on breeding grounds are still poorly known in the world. This study reports field observations of a juvenile whale - yearling, in Brazilian waters, with evidence of foraging behavior, in search of prey that seemed to be prawn or squid, during short dives. In addition, other similar observations are reported in southeastern Brazil in which the whales showed interest and approach gillnets, probably attracted by entangled fish. In some of these cases, it is considered that whale approaching towards the nets has caused entanglements, and in at least one case the specimen freed itself from nets. In other cases, nets may have caused humpback whale injuries. A follow-up of these interactions throughout the Brazilian coast is recommendedfor a better evaluation of these interactions with fishing nets, since they may represent a new form of behavior of these whales in their migratory period.
RIQUEZA E DISTRIBUIÇÃO DE MACRÓFITAS AQUÁTICAS NO RIO GUARIBAS, PICOS, PIAUÍ
Authors: Sousa Welinton Gustavo Moreira de , Silva Edson Lourenço da , Pacheco Ana Carolina Landim , Pinheiro Tamaris Gimenez , Abreu Maria Carolina de 
Published: June 2021

As macrófitas aquáticas desempenham importantes funções no ambiente aquático, contribuindo para a estruturação ambiental e para o equilíbrio biológico. O presente estudo teve como objetivo conhecer a riqueza biológica e a distribuição de macrófitas aquáticas no rio Guaribas, município de Picos, Piauí, corpo d’água do semiárido fortemente alterado por ações antrópicas. Para isso, amostras foram coletadas mensalmente em cinco estações no trecho urbano do referido rio, no período de setembro/2018 a fevereiro/2019. Para a coleta dos vegetais utilizou-se um quadrante com lados de 25 cm (0,0625 m2). O material foi conduzido para o Laboratório de Botânica da Universidade Federal do Piauí, campus de Picos, onde foi lavado, separado e identificado. Foram listadas 24 espécies distribuídas em 13 famílias botânicas, entre as quais foram mais representativas: Poaceae (5), Cyperaceae (3), Fabaceae (3), Araceae (2), Convolvulaceae (2) e Polygonaceae (2). As formas biológicas mais comuns foram as anfíbias e emergentes, anfíbias e as flutuantes livres. A maior riqueza florística ocorreu nos meses de fevereiro e setembro com 18 e 16 espécies, respectivamente. Conclui-se que a diversidade de macrófitas aquáticas do rio Guaribas sofreu influência dos fatores ambientais e antrópicos sendo favorecida pelo evento de chuvas, sucessão de espécies e eutrofização do corpo d’água.RICHNESS AND DISTRIBUTION OF AQUATIC MACROPHYTES SPECIES IN THE GUARIBAS RIVER, PICOS, PIAUÍ STATEABSTRACTAquatic macrophytes play important roles in the aquatic environment, contributing to environmental structuring and biological balance. The present study had as objective to know how environmental factors interfere in the biological richness and in the distribution of aquatic macrophytes in theGuaribas river, water body of the semiarid strongly altered by anthropic actions, municipality of Picos, Piauí. For that, samples were collected monthly in five stations in the urban section of the referred river, from September / 2018 to February / 2019. For the sampling of vegetables, a quadrant with sides of 25 cm (0.0625 m2) was used. The material was taken to the Botany Laboratory ofthe Federal University of Piauí, Picos campus, where it was washed, separated and identified. 24 species were listed, distributed in 13 botanical families, among which were most representative: Poaceae (5), Cyperaceae (3), Fabaceae (3), Araceae (2), Convolvulaceae (2) and Polygonaceae (2). The most common biological forms were amphibians and emergent, amphibious and free floating.The greatest floristic richness occurred in the months of February and September with 18 and 16 species, respectively. It is concluded that the diversity of aquatic macrophytes in the Guaribas River was influenced by environmental and anthropic factors, being favored by the event of rains, succession of species and eutrophication of the water body.
WOMEN IN AMAZONIAN ELASMOBRANCH RESEARCH: A TRIBUTE TO THE BRAZILIAN RESEARCHERS
Authors: Wosnick Natascha , Palmeira-Nunes Ana Rita Onodera 
Published: June 2021

ABSTRACTHistorically, women have been excluded from the scientifi c and academic world. It was only in the second half of the twentieth century that women had access to scientifi c education and started their professional careers, with low female participation in science and technology and a trail of gender discrimination and prejudice. Nowadays women continue to continue to struggle to overcome the barriers imposed by patriarchal society and culture, and several changes are still needed to introduce a gender perspective in science, and every step taken is a victory towards inclusion and recognition. Here is a list of women who have engaged in elasmobranch research in the Amazonian region and dedicated their careers to improving knowledge of sharks and batoids. We hope that with this special edition we will not only be able to honor these strong women who have paved our way, but also to inspire young scientists to do the same. ResumoHistoricamente, mulheres foram excluídas do mundo científi co e acadêmico. Foi apenas na segunda metade do século XX que elas tiveram acesso à educação científi ca e iniciaram suas carreiras profi ssionais, com baixa participação feminina na área de ciência e tecnologia e um enorme rastro de discriminação de gênero e preconceito. Atualmente as mulheres continuam lutando para vencer as barreiras impostas pela sociedade e cultura patriarcais, e inúmeras mudanças ainda são necessárias para se introduzir uma perspectiva de gênero na ciência e cada passo dado é uma vitória em direção à inclusão e reconhecimento. Aqui trazemos uma lista de mulheres que se engajaram na pesquisa de elasmobrânquios na região amazônica e dedicaram suas carreiras à pesquisa e conservação de tubarões e raias. Esperamos que a presente homenagem a estas mulheres fortes que pavimentaram nosso caminho possa inspirar jovens cientistas a fazerem o mesmo.Palavras-chave: Chondrichthyes; Amazônia; Gênero; Ciência.
Comparison of alfaxalone versus propofol as anaesthetic induction agents in increasing the rate of survival and vigour of neonates
Authors: Sofyan Lesca Monica , Martinez-Taboada Fernando 
Published: June 2021

PICO question
In routine canine caesareans, is alfaxalone a superior anaesthetic induction agent than propofol in increasing the rate of survival and vigour of neonates?

Clinical bottom line
Category of research question
Treatment
The number and type of study designs reviewed
Three randomised positive clinical trials have compared the efficacy between alfaxalone and propofol in routine canine caesarean sections for increased neonatal survival and vigour
Strength of evidence
Weak
Outcomes reported
Although two studies found alfaxalone to be associated with higher Apgar scores for neonates than propofol, each study nonetheless revealed positive vigour and high survival rates from the use of either alfaxalone or propofol. The evidence is too weak to suggest that one induction agent is superior to another. The selection between the two induction agents may not be the main concern in regard to neonatal depression and 24 hour survival post-delivery, provided that the entire canine caesarean protocol is thoroughly and carefully studied
Conclusion
Text here

How to apply this evidence in practice
The application of evidence into practice should take into account multiple factors, not limited to: individual clinical expertise, patient’s circumstances and owners’ values, country, location or clinic where you work, the individual case in front of you, the availability of therapies and resources.
Knowledge Summaries are a resource to help reinforce or inform decision making. They do not override the responsibility or judgement of the practitioner to do what is best for the animal in their care.
Indices De Minéralisations En Or Dans La Province Panafricaine Du Sud Maradi (Sud Niger)
Authors: Baraou Idi Souley , Konaté Moussa , Ahmed Yacouba , Sani Abdoulwahid 
Published: June 2021

Le socle du Sud Maradi (Sud Niger) correspond à l’extrémité Nord du bouclier Bénino-Nigérian, appartenant à la zone mobile panafricaine à l’Est du Craton Ouest-Africain. Cette étude apporte une modeste contribution dans la caractérisation géochimique des minéralisations aurifères de cette province métallogénique panafricaine. A cet effet, l’approche méthodologique mise en oeuvre associe le dosage géochimique de l’or par absorption atomique (Au Fire Assay/AA) pour les roches saines, et la séparation des pépites d’or par l’utilisation de la table à secousse pour les altérites du socle et les sédiments (placers et paléoplacers). Les analyses géochimiques ont mis en évidence l’existence de deux types de minéralisations: primaires et secondaires. Les minéralisations primaires de l’or sont à l’état disséminé (faibles teneurs de 0.005 à 0.017 g/t) mais des teneurs relativement plus élevées (0.006 à 0.017 g/t) ont été enregistrées au voisinage des zones de cisaillement du socle. Tandis que la minéralisation secondaire, mise en évidence dans les altérites du socle, dans les alluvions (placers) et dans les grès du Crétacé (paléoplacers) présentent des teneurs en or plus élevées (5 à 30 g/t), dépassant largement les teneurs des minéralisations primaires observées dans les roches saines du socle. Ce grand écart de teneurs s’explique par un fort lessivage du socle, qui aurait permis une reconcentration de l’or dans les sédiments.
The South Maradi (South Niger) basement corresponds to the northeastern part of the Benin-Nigerian Shield, belonging to the Pan-African mobile zone, which is located to the east of the West African Craton. This study brings a modest contribution to the geochemical characterization of gold mineralization in this Pan-African metallogenic province. For this purpose, the methodological approach implemented combines the geochemical determination of gold contents by atomic absorption (Au Fire Assay/AA) for basement rocks and physical separation of gold specks by using the vibrating table process for basement alterites and sediments (placers and paleoplacers). The obtained results showed two types of gold mineralization: primary and secondary. Primary gold mineralization is in a disseminated state (low contents of 0.005 to 0.017 g / t) but relatively the higher values (0.006 to 0.017 g / t) were recorded near the basement shear zones. While the secondary gold mineralization, highlighted in basement alterites, alluvium (placers) and Cretaceous sandstones (paleoplacers) present higher gold contents (5 to 30 g / t) than primary gold contents observed in basement rocks. This large difference in values can be explained by a strong alteration of the basement, which would have allowed a reconcentration of the gold in the sediments.
Caracterización Térmica De Vidrios Con Recubrimientos Metálicos
Authors: Hernández-Garfias Enrique , Pérez-Sánchez Carolina del Carmen , Durán-Mendoza Temani , Guzmán-Ceferino Juan , González-Pérez Manuel 
Published: June 2021

Por la situación climática de las últimas décadas, las normas internacionales que regulan a los materiales de construcción son cada vez más estrictas. Actualmente, el vidrio es uno de los materiales de construcción más utilizados a nivel global y existen normas para evaluar su rendimiento térmico y así conocer su eficiencia para ahorrar energía. El Coeficiente de Transferencia de Calor (U) y el Coeficiente de Ganancia de Calor Solar (CGCS) son los principales parámetros térmicos que se utilizan para verificar si el rendimiento del material es satisfactorio en función de las normas vigentes y el mercado de vidrios. Para determinar estos parámetros se hicieron pruebas al exterior con un calorímetro solar diseñado y desarrollado para este fin. En este trabajo se evaluaron cinco muestras de vidrio: una muestra de vidrio claro (referencia) y cuatro muestras con recubrimientos de ZnO:Cu y ZnO:Ag en distintas concentraciones y número de capas aplicadas, los cuales fueron desarrollados con el objetivo de reducir la ganancia de calor. Los resultados de la evaluación mostraron diferencias poco significativas entre la muestra de referencia y las muestras con recubrimientos. Por lo cual, se sugiere realizar modificaciones durante el desarrollo o la aplicación de los recubrimientos que permita mejorar las características de ganancia térmica.
Due to the climatic situation of the last decades, the international standards that regulate construction materials are increasingly strict. Currently, glass is one of the most used building materials in the world, and there are standards to evaluate its thermal performance and thus know its efficiency to save energy. The Thermal Transmittance (U-value) and the Solar Heat Gain Coefficient (SHGC) are the main thermal parameters used to verify if the performance of the material is satisfactory according to current standards and the glass market. To determine these parameters, outdoor tests were carried out with a solar calorimeter designed and developed for this purpose. In this work, five glass samples were evaluated: one clear glass sample (reference) and four samples with ZnO: Cu and ZnO: Ag coatings in different concentrations and number of applied layers, which were developed to reduce heat gain. The results of the evaluation showed not very significant differences between the reference sample and the samples with coatings. Therefore, it is suggested to carry out modifications during the development or application of the coatings to improve the thermal gain characteristics.