ABSTRACT The percentage increase of electric propulsion vehicles in the automotive matrix worldwide, and their necessary introduction in Cuba, imposes the need to have all the detailed technical information for the support and maintenance of their electrical systems, since many of these services are no longer applied due to the lack of documentation. For this reason, the main objective of this work is defined as the realization of a complete technical description of the operation of the electrical systems of the Minghong vehicle, model Aries C2, as well as the main schematic diagrams. The detailed aspects cover the power stages, their corresponding control systems, and the interconnections between them. From the measurements performed, several waveforms obtained at the charger and motor controller were presented. With these results, a detailed knowledge of the operation of this means of transport was obtained, for future repairs, not only in the mentioned model, but in others that circulate in the country based on a similar technology.

RESUMEN El incremento porcentual de los vehículos de propulsión eléctrica en la matriz automotora a nivel mundial, y su necesaria introducción en Cuba impone la necesidad de disponer de toda la información técnica detallada para el soporte y mantenimiento de los sistemas eléctricos de los mismos, debido a que muchos de esos servicios dejan de ser aplicados por la falta de documentación. Por ese motivo, en el presente trabajo se define como objetivo principal la realización de una descripción técnica completa del funcionamiento de los sistemas eléctricos del vehículo Minghong, modelo Aries C2, así como los principales diagramas esquemáticos. Los aspectos detallados abarcan las etapas de potencia, sus correspondientes sistemas de control, y las interconexiones entre estos. De las mediciones realizadas, se presentaron varias formas de onda obtenidas en el cargador y el controlador del motor. Con estos resultados, se dispuso de un conocimiento detallado del funcionamiento de este medio de transporte, para futuras reparaciones, no solo en el modelo mencionado, sino en otros que circulan en el país basados en una tecnología similar.

ABSTRACT Polynoid scale-worms have been found living as commensals with deep-water antipatharians (commonly known as black corals) in the Potiguar Basin, off Rio Grande do Norte State, Northeastern Brazil. In this paper two polychaete species and four black corals species are redescribed. Benhamipolynoe cf. antipathicola and Parahololepidella cf. greeffi, and the black coral Stylopathes adinocrada Opresko, 2006 are recorded for the Southwestern Atlantic. Benhamipolynoe cf. antipathicola was first described from off New Zealand and the Malay Archipelago, as symbiont with the black coral Stylopathes tenuispina (Silberfeld, 1909). It was later reported for the North Atlantic, off Florida, associated with Stylopathes columnaris (Duchassaing, 1870). In our study, B. cf. antipathicola was found in association with the black coral S. adinocrada. Parahololepidella cf. greeffi was first described as a free-living from shallow waters off São Tomé and Cabo Verde Islands, West Africa, and later reported as symbiont with the black coral Tanacetipathes cf. spinescens in the same location. Our data expand both the geographical distribution and the host range of this species which is reported for the first time as symbiont with Tanacetipathes barbadensis (Brook, 1889), T. tanacetum (Pourtalès, 1880) and T. thamnea (Warner, 1981) in Brazil. The aim of this study is to discuss commensal associations between two species of scale-worm polynoids and black corals found in the Southwestern Atlantic, and also reporting their global distribution. Finally, we provided an updated list of the commensal polynoids and their black coral hosts.

Nos recifes brasileiros os zoantídeos, especialmente Palythoa caribaeorum, são fundamentais na estruturação da comunidade bentônica local. O objetivo deste estudo foi determinar a taxa de crescimento de P. caribaeorum e avaliar a influência do local (praias diferentes), do período do ano (seco ou chuvoso), posição (médio ou infralitoral) e pressão antrópica associada ao turismo. Durante um ano acompanhamos a cobertura de P. caribaeorum com uso de transectos e focamos em 20 colônias. Nós retiramos um quadrado (100 cm2) da porção central da colônia e monitoramos a área desnuda por quatro meses em cada estação. As taxas médias de crescimento variaram entre 0,015 e 0,021 cm.dia-1. A taxa foi homogênea em todas as localidades, e não houve influência do local, posição e nem da visitação turística, mostrando que a velocidade de crescimento pode ser uma característica intrínseca da espécie, com forte componente genético. A taxa de crescimento de P. caribaeorum diferiu entre os meses, com pico no primeiro mês após a injúria. A cobertura média variou de 6,2 a 22,9% e foi menor no recife visitado por turistas. O presente estudo corrobora a hipótese que P. caribaeorum é importante na dinâmica de recifes costeiros devido a seu rápido e contínuo crescimento.

In Brazilian reefs, zoanthids, especially Palythoa caribaeorum are fundamental for structuring the local benthic community. The objective of this study was to determine the growth rate of P. caribaeorum, and to assess the influence of the site (different beaches), season (dry and wet), location (intertidal or infralittoral zones), and human pressure associated with tourism. For one year we monitored the cover of P. caribaeorum in transects and focused on 20 colonies. We cut off a square (100 cm2) from the central part of the colony and monitored the bare area for four months in each season. The average growth rates varied from 0.015 and 0.021 cm.day-1. The rate was homogeneous in all localities, and there was no influence from colony site, location, or touristic visitation, showing that the growth velocity may be an intrinsic characteristic of the species, with a strong genetic component. The growth rate of P. caribaeorum differed among months, and peaked in the first month after injury. The average cover varied from 6.2 to 22.9% and was lower on the reef visited by tourists. The present study corroborates the hypothesis that P. caribaeorum is important for coastal reef dynamics due to its fast and continuous growth.

This review explores the chemical and biological aspects/results reported in the literature of the octocoral species collected at the Brazilian Coast. This article summarizes the biological activities (including pharmacological, antifouling and others related to chemical ecology) for the compounds and/or extracts described elsewhere. Data and references of compounds isolated from species belonging to the same genus, which have not been investigated in Brazil yet, are presented, emphasizing the importance for research in this area.

Este estudo foi desenvolvido para avaliar a seletividade de presas (tipo e tamanho) do octocoral Carijoa riisei na praia de Porto de Galinhas, nordeste do Brasil, relacionando a disponibilidade de presas no plâncton com o conteúdo gástrico dos pólipos. Diatomáceas e Cianofíceas foram os itens de presas mais abundantes tanto na cavidade gástrica dos pólipos quanto no plâncton. Foi observada uma correlação entre a abundância de presas no plâncton e na cavidade gástrica dos pólipos de C. riisei. Mastogloia sp. apresentou o maior índice de seletividade positiva (0,99). Foram encontrados organismos bentônicos, totalizando 0,51% do total de presas consumidas. A amplitude de tamanho das presas no plâncton foi similar à da cavidade gástrica dos pólipos, no entanto, o tamanho médio das presas nos pólipos (112,7 µm) foi significativamente menor que a do plâncton (240,5 µm). Assim, o estudo indica certa seletividade de tamanho nesta espécie ou, pelo menos, limitação de tamanho. A partir dos resultados, conclui-se que o octocoral C. riisei é uma espécie polífaga oportunista na costa nordestina brasileira, com hábito alimentador suspensívoro passivo, preferindo itens de presas com pequeno tamanho e evidenciando ter importante papel ecológico em ecossistemas recifais como responsável pela transferência bidirecional de energia entre as zonas pelágica e bentônica.

This study was designed to evaluate prey selection (type and size) by the octocoral Carijoa riisei at Porto de Galinhas beach, Northeast Brazil, relating prey availability in plankton with the content inside polyps. Diatoms and cyanophytes were the predominant items found in both polyp gastric cavity and plankton. A correlation between prey abundance in the plankton and in the gastric cavity of C. riisei polyps was observed. Mastogloia sp. showed the highest positive electivity index (0.99). Benthonic items were found, with 0.51% of total consumed preys. The size amplitude of prey items in the plankton was similar to those found inside the polyps, although the mean prey size in the polyps (112.7 µm) was significantly lower than the value found in the plankton (240.5 µm). Thus, the study indicates some size selectivity in this species or at least size limitation. From the results, we concluded that the octocoral C. riisei is an opportunistic polyphagous species in the Brazilian northeast coast, showing suspensivorous passive filtering feeding habit with a preference for small prey items and evidencing its important ecological role in the reefal ecosystem as responsible for bidirectional energy transference between pelagic zones and the benthos.

O presente trabalho representa a primeira análise das atividades analgésica e antiinflamatória do extrato bruto hidroalcoólico do zoantídeo Palythoa caribaeorum. Foram realizados os testes de Writhing induzido por ácido acético (1%, 10 mL.kg-1 i.p.) e da chapa quente em camundongos para avaliar o efeito analgésico; e o teste de edema de pata de rata induzido por carragenina para avaliar a atividade antiinflamatória. As análises evidenciaram atividade analgésica no teste de Writhing no grupo tratado com 200 mg.kg-1 v.o. de extrato, com uma inibição de 47,22% do número de contorções abdominais ("Writhings"), revelando atividade estatisticamente significativa.

This work represents the first pharmacological analysis on the crude hydroalcoholic extract of Palythoa caribaeorum. The analgesic activity was assayed in acetic acid-induced writhing test and with the hot-plate test with mice; while the anti-inflammatory activity was evaluated in carrageenan-induced hind paw edema in the rat. The analysis suggested an analgesic activity in the Writhing test on the group treated with the crude extract (200 mg.kg-1 v.o.) with an abdominal contortion’s inhibition of 47,22 %.

Foi coletada uma pequena colônia de Leptogorgia punicea (Milne-Edwards & Haime, 1857) no mediolitoral da praia da Marcela. A coleta representa o primeiro registro para o Estado do Maranhão, tornando continua sua distribuição ao longo da costa ocidental americana.

A small colony of Leptogorgia punicea (Milne-Edwards & Haime, 1857) was sampled in the intertidal zone of Marcela beach. This sample represents the first record from Maranhão State, making continuous the distribution of this species along the western American coast.