Abstract This study compares the profile of Brazilian and Chinese scientific publications in Information Science indexed in the Web of Science. The specific objectives are: (a) to survey the number of articles published by each country; (b) identify the characteristics of the journals in which the articles are published; and (c) identify the nationality and type of publishers that edit these journals. The Web of Science search yielded 6,417 articles, with 2,005 articles authored by Brazilian institutions and 4,412 articles authored by Chinese institutions. Of these articles, 29.5% of the Brazilian publications and the majority (99.9%) of the Chinese publications were in English. Brazilian production is published in 99 of the 221 journals, while Chinese is published in 122. Different access models were identified for the articles. Specifically, 91% of Chinese publications were accessible via subscription and 76% of the Brazilians via open access. The highest concentration of journals is in England, the United States, and the Netherlands, with an Impact Factor of less than one. Commercial publishers publish most Chinese articles (92.3%) while Brazilian articles are predominantly available through university publishers with open access repositories (72.3%). It is concluded that the scientific production in the field of Information Science from Brazil and China, as indexed in the Web of Science, exhibits diversified strategies. Brazil stands out for the indexing of national journals and publishing articles in Portuguese that are available through Open Access repositories. On the other hand, China is notable for its publication of articles in English, in journals that are already indexed in the Web of Science, and predominantly edited by commercial publishers. A more internationalized production than the Brazilian one, but with greater dependence on the system by the scientific community.

Resumo Este estudo compara o perfil da publicação científica brasileira e o da chinesa na área de Ciência da Informação indexada na Web of Science. Os objetivos específicos são: (a) levantar o número de artigos publicado por cada país; (b) identificar as características dos periódicos nos quais os artigos são publicados; e (c) identificar a nacionalidade e a tipologia dos publishers que editam os periódicos. A busca na Web of Science resultou em 6.417 artigos de autores vinculados às instituições brasileiras e chinesas, respectivamente, 2005 e 4.412, sendo 29,5% da publicação brasileira em inglês, e a maioria da chinesa (99,9%). Do total de 221 títulos, a produção brasileira é publicada em 99, e a chinesa em 122, majoritariamente via subscrição diferente do modelo de acesso identificado nos artigos: 91% dos chineses via subscrição e 76% dos brasileiros em acesso aberto. A maior concentração dos títulos ocorre na Inglaterra, nos Estados Unidos e na Holanda, com Fator de Impacto inferior a 1. Editoras comerciais publicam a maioria dos artigos chineses (92,3%), enquanto os artigos brasileiros concentram-se em editoras universitárias de acesso aberto (72,3%). Conclui-se que a produção científica em Ciência da Informação brasileira e chinesa na Web of Science apresenta estratégias diversificadas: a brasileira se destaca pela indexação dos periódicos nacionais, publicando artigos em português e em Acesso Aberto, enquanto a chinesa pela publicação em inglês, em periódicos indexados na base e majoritariamente editado por editoras comerciais. Na China, há uma produção mais internacionalizada que a brasileira, porém com maior dependência do sistema por parte da comunidade científica.

Abstract: This research describes the most prolific scientific journals in Engineering indexed in the Web of Science. It is a qualitative and quantitative analysis and adopts Bradford's law applied to bibliometrics, that was applied as a methodological choice, which enabled the systematic comparison between the units of impact factor analysis of the Journal Citation Reports and SCImago Journal Rank, Qualis CAPES, Publishers, and types of access. The data were gathered in the main collection of the Web of Science database in the 2013-2018 time frame. As a result, 1,037 journals were identified, of which 29 are the core journals that correspond to 7,333 of the retrieved articles. When comparing Qualis CAPES, JCR, and SJR, the data show that the highest impact factor is not reflected in Qualis CAPES. Subscription journals controlled by that are affiliated to commercial publishers predominate, Elsevier is the one with the highest number of titles (48.3%) and articles (3,268). This work concludes that researchers in Engineering affiliated to Brazilian institutions direct their articles to subscription scientific journals classified within A1 category in Qualis Periódicos, regardless of the impact factor.

Resumo Esta pesquisa visa caracterizar os periódicos científicos mais relevantes na área das Engenharias indexados na Web of Science. Trata-se de uma análise quali-quantitativa e utiliza a lei de Bradford aplicada à bibliometria, que possibilitou a comparação entre as unidades de análises fator de impacto da Journal Citation Reports e SCImago Journal Rank, Qualis CAPES, Publishers e tipos de acesso. Os dados foram coletados na coleção principal da base de dados Web of Science no recorte temporal de 2013 a 2018. Como resultados, foram identificados 1.037 periódicos, dos quais 29 são os títulos de núcleo que correspondem a 7.333 dos artigos recuperados. Os periódicos de subscrição predominam, vinculados às grandes editoras comerciais, das quais a Elsevier é a que possui maior número de títulos (48,3%) e de artigos (3.268). Conclui que os pesquisadores da área das Engenharias com vínculo institucional brasileiro direcionam seus artigos para periódicos científicos por subscrição classificados com estrato A1 no Qualis Periódicos, independentemente do fator de impacto.

RESUMO O estudo da significação é uma das problemáticas mais complexas da Linguística, segundo os pressupostos de Bakhtin e do Círculo. Nesse ínterim, o tema, um dos conceitos-chave, embora não seja o mais estudado pelo Círculo, torna-se essencial para a compreensão da linguagem como ação concreta. Este artigo, de escopo bibliográfico, objetiva discutir, epistemológica e teoricamente, a concepção de tema e os conceitos a ele relacionados nos trabalhos do Círculo, especificamente, Bakhtin, Volochínov e Medviédev. Para tanto, o texto retoma as considerações a respeito do tema nas obras desses autores, a observar seu desdobramento, no decorrer dos anos. Os resultados apontam que há variações, nos textos, em relação ao conceito, o que possibilitou depreender algumas tendências em seu entendimento: (1) tema como o sentido total da enunciação, o acontecimento, a realidade e o momento no qual, axiologicamente, interagem conteúdo e forma; (2) tema como a relação entre significação e valoração do signo ideológico; e (3) tema como objeto da enunciação/do enunciado.

ABSTRACT The study of meaning is one of the most complex problems in Linguistics, according to Bakhtin’s and his Circle’s assumptions. In the meantime, the theme, one of the key concepts, although not the most studied by the Circle, becomes essential for the understanding of language as a concrete action. This bibliographic article aims to discuss, epistemologically and theoretically, the concept of the theme as well as the concepts in the Circle’s works, specifically, Bakhtin’s, Volochínov’s and Medviédev’s. To this end, the text resumes the considerations about the theme in these authors’ works, to observe its deployment over the years. Results show that there are variations in the concept, which made it possible to understand some trends in their understanding: (1) theme as the total meaning of the utterance, the event, the reality and the moment in which content and form interact axiologically; (2) theme such as the relationship between meaning and value of the ideological sign; and (3) theme as the object of the utterance.

Abstract Objective: The association between diabetes and Strongyloides infection remains controversial. This study aimed to detect Strongyloides stercoralis DNA in the feces of patients with Diabetes Mellitus type 2 (DM2). Methods: Fecal samples were analyzed via the Lutz, Rugai, and agar plate culture methods. PCR amplification was performed using two targets (PCR-genus and PCR-species) located on the S. stercoralis 18S ribosomal. Results: The positivity for S. stercoralis using parasitological methods was 1.1%. PCR-genus (14.13%) demonstrated a higher positivity than PCR-species (9.78%). Conclusion: The results confirm the greater positivity of the molecular diagnosis in relation to parasitological methods, reinforcing its use as an additional tool for the diagnosis of S. stercoralis infection in patients with DM2 living in endemic areas for this helminthiasis. HIGHLIGHTS Positivity for strongyloidiasis in coproscopic exam was low in diabetic patients. PCR is more sensitive for detecting S. stercoralis infection in diabetic patients. Molecular diagnosis is an important tool for the detection of S. stercoralis.

ABSTRACT Blastocystis sp. is an enteric protist commonly found in human fecal samples. In Brazil, few studies have been developed, but none of them has explored the presence of Blastocystis in patients with diabetes mellitus. We evaluated the occurrence and molecular identification of Blastocystis sp. among patients with diabetes mellitus in the Midwest region, Goias State, Brazil. Genomic DNA was obtained from 175 fecal samples (99 from the diabetic group and 76 from the control group). PCR was performed using pan-Blastocystis primers from the SSU-rDNA gene. Microscopic examination revealed positivity of 12.1% and 7.9% for Blastocystis in diabetics and in controls, respectively. Amplification of Blastocystis DNA was observed in 34.4% (34 of 99) and 30.3% (23 of 76) from the diabetic and control groups, respectively. Phylogenetic analyses and BLAST searches revealed six subtypes among Blastocystis isolates in the diabetic group, represented by ST1 (38.2%), ST2 (11.8%), ST3 (35.3%), ST6 (2.9%), ST7 (2.9%) and ST8 (8.8%). In the control group, ST1 (21.8%), ST2 (21.8%), ST3 (43.5%), ST6 (4.4%) and ST8 (8.7%) were identified. This study is the first report regarding the occurrence and subtypes distribution of Blastocystis in patients with diabetes mellitus in Brazil. The results reinforce the potential risk of Blastocystis infection in patients with diabetes, in addition, it contributes to the understanding of the genetic diversity of this enigmatic organism.

Resumo Este artigo investiga os editores da produção científica latino-americana. Os dados coletados na Web of Science entre os anos de 2014 a 2016 mostram 251.312 artigos em 11.965 periódicos, publicados majoritariamente por editoras comerciais (56,48%), dentre as quais se destacam Elsevier, Springer, Wiley, Taylor & Francis e Sage Group. Essas instituições concentram o maior volume de títulos e artigos em Ciências da Vida & Biomedicina, Ciências Físicas e em Tecnologia. Nas Ciências Sociais e Artes & Humanidades sobressaem-se os editores universitários da região. Discute-se o investimento para publicar ao estimar os valores das taxas de publicação cobradas pelos títulos com maior número de artigos. A conclusão aponta a relevância da editoria universitária regional para publicação em títulos mainstream nos campos relegados pela Web of Science e seu papel na promoção do acesso aberto pela via platina. Por fim, aponta-se o papel exercido pelos grandes editores comerciais no acompanhamento de demandas de abertura científica, sem perda de mercado.

Abstract This article investigates the publishers of Latin American scientific production. The data collected on the Web of Science in the years of 2014 to 2016 show 251,312 articles in 11,965 journals, mostly by commercial publishers (56.48%), among which Elsevier, Springer, Wiley, Taylor & Francis, and the Sage Group stand out. These institutions concentrate the largest volume of titles and articles in the Life Sciences & Biomedicine, Physical Sciences, and Technology. In the Social Sciences and in Arts & Humanities, university publishers in the region stand out. The investment in publication is discussed when estimating the values of publication fees in titles with the largest number of articles. The conclusion points to the relevance of regional university publishing for publication in mainstream titles in fields relegated by the Web of Science and its role in promoting open access via platinum. It points out the strategies of large commercial publishers to keep up with demands of scientific openness without losing the market.

Resumo O objetivo do trabalho é identificar os periódicos científicos que tiveram sua indexação descontinuada na Coleção Scientific Electronic Library Online Brasil e analisar as motivações apresentadas nos editoriais. A metodologia consultou as características dos 75 títulos identificados na base e foram analisados os editoriais do ano da desindexação e do posterior, utilizando-se a técnica análise de conteúdo. Os resultados mostram que dos 75 periódicos de todas as áreas, 52 publicaram editoriais sobre o assunto, dos quais retiraram-se 156 textos. A Scientific Electronic Library Online usa duas categorias de motivos genéricos: terminado (40 títulos) – tiveram seus títulos alterados, sendo que 38 permaneceram na base – e indexação interrompida (35 títulos) – que saíram da base e os volumes já indexados foram mantidos. Na categoria terminado, identificaram-se cinco principais motivações: internacionalização e ou visibilidade internacional (62,5%), modernização (5,0%), mudança de entidade editora (5,0%), mudança de entidade editora e internacionalização (2,5%) e absorvido por outro periódico (2,5%) – motivações não identificadas (22,5%). Na categoria indexação interrompida, identificaram-se três principais motivações: internacionalização e ou visibilidade internacional, parceria com editora comercial internacional (34,0%), atraso no lançamento de novos fascículos (14,4%) e contra a política da Scientific Electronic Library Online de internacionalização (2,9%) – motivações não identificadas (48,7%). O grande número de motivações não identificadas em editoriais aponta para a necessidade de ampliar a transparência na gestão dos periódicos. A internacionalização, principal motivação encontrada, é impulsionada pelos critérios da Scientific Electronic Library Online e parece ter sido entendida de várias maneiras nos editoriais. Enquanto a maioria permaneceu na base, foram identificados 12 títulos que firmaram parcerias com editoras comerciais internacionais e saíram da Scientific Electronic Library Online.

Abstract The objective of this work was to identify scientific journals that were discontinued in the Scientific Electronic Library Online Brazil Collection and to analyze the motivations expressed in the editorials. The methodology involved identifying the characteristics of the 75 journal titles, and the editorials of the year of discontinuation and the subsequent one were analyzed using the content analysis technique. The results show 75 journals from all areas of knowledge, 52 published editorials on the subject, from which 156 texts were identified. Scientific Electronic Library Online uses two categories of generic reasons: finished (40 titles), the titles have been changed, with 38 remaining at the base, and interrupted indexing (35 titles) that were taken off the base, but the volumes already indexed were maintained. In the finished category, five main motivations were identified: internationalization and / or international visibility (62.5%), modernization (5.0%), change of publishing entity (5.0%), change of publishing entity and internationalization (2.5%), absorbed by another journal (2.5%), unidentified motivations (22.5%). In the interrupted indexing category, we identified three main motivations: internationalization and or international visibility, partnership with an international commercial publisher (34.0%), delay in launching new issues (14.4%), against Scientific Electronic Library Online internationalization policy (2,9%), unidentified motivations (48.7%). The large number of reasons not identified in editorials shows the need to increase transparency in the management of journals. Internationalization, the main motivation found, promoted by Scientific Electronic Library Online criteria and seems to have been understood in several ways in the editorials. While the majority remained at the base, 12 titles that entered into partnerships with international commercial publishers were identified and left Scientific Electronic Library Online.

RESUMO Esta pesquisa analisa características dos periódicos de medicina Qualis A1 visando a construir uma reflexão crítica sobre o impacto das políticas de avaliação de periódicos na produção científica brasileira. Por meio de análise quali-quantitativa identifica características editoriais dos periódicos A1 nas áreas de Medicina I, Medicina II e Medicina III a fim de estabelecer um perfil desses periódicos. As informações foram extraídas das plataformas Sucupira, Ulrichsweb, DOAJ, Scimago Journal Rank e Journal Citation Reports. Os resultados para o perfil dos periódicos foram homogêneos entre as três áreas de medicina, e demonstraram que: são editorados majoritariamente por entidades comerciais com predominância da editora Elsevier; que a mediana do fator unificado (Fator de Impacto ou Cites per Doc) é 5,365; que a periodicidade mais observada foi a mensal; que possuem em torno de 45 anos de existência; que 13% são de Acesso Aberto; que o país predominante é os Estados Unidos e que o idioma inglês é quase unanimidade. Conclui que as características editoriais observadas refletem a hegemonia de conglomerados comerciais no mercado da publicação científica, e que os periódicos brasileiros, majoritariamente de Acesso Aberto e financiados com recursos públicos, não possuem condições de competir com os títulos dessas empresas.

ABSTRACT This research analyzes the characteristics of Qualis A1 medical journals in order to set up a critical reflection on the impact of journal evaluation policies on Brazilian scientific production. Identifies editorial characteristics of the A1 journals in the areas of Medicina I, Medicina II and Medicina III through a qualitative-quantitative analysis, in order to draw a profile of these journals. The information was extracted from the following systems: Sucupira, Ulrichsweb, DOAJ, Scimago Journal Rank and Journal Citation Reports. The results for the profile of the journals were homogeneous among the three medical areas, and demonstrated that they are mainly published by commercial entities with the predominance of the publisher Elsevier; the median of the unified factor (Journal Impact Factor or Cites per Doc) is 5,365; the frequency of publishing is monthly; they are 45 years old; 13% are Open Access; the predominant country is the United States and that the English language is almost unanimous. It concludes that the observed editorial characteristics reflect the hegemony of commercial conglomerates in the academic publishing market, and that the Brazilian journals, mostly of Open Access and financed by public resources, are unable to compete with the journals of these companies.

ABSTRACT Strongyloidiasis is a human parasitic disease caused by the helminth Strongyloides stercoralis whose treatment is particularly difficult in immunosuppressed patients due to their low responsiveness to conventional therapy. Carica papaya and its isolated compounds benzyl isothiocyanate, carpaine and carpasemine are promising compound for the treatment of Strongyloides infections due to their anthelmintic action. This study aims to examine the in vitro ovicidal and larvicidal activity of C. papaya seed hexane extract against Strongyloides venezuelensis, using egg hatching tests and larval motility tests as efficiency markers. The crude extract at the concentrations of 566 – 0.0566 mg/mL or the control with albendazole (0.025 mg/mL) and negative controls (water and PBS) were incubated with an equal volume of egg suspension (± 50 specimens) followed by counting of the specimens after 48 h. The same extract and dilutions were added to L3 larvae suspensions (±50 specimens) followed by analysis of larvae viability after 24, 48, and 72 h. The extract inhibited egg hatching with high efficiency at concentrations of 56.6 mg/mL (95.74%) and 5.66 mg/mL (92.16%). At the concentrations of 566 mg/mL (100%) and 56.66 mg/mL (97.32%), the extract inhibited larval motility as effectively as ivermectin (0.316 mg/mL; 100%), and more effectively than the other dilutions and the negative controls. The larvicidal effect depended on the extract concentration, but not on the treatment period. Therefore, C. papaya seed hexane extract has anthelmintic potential against S. venezuelensis and is a promising compound for the development of phytotherapies to treat strongyloidiasis.

ABSTRACT Patients infected with the Human Immunodeficiency Virus (HIV) often have opportunistic infections, among which strongyloidiasis and coccidiosis are the most common parasitic infections that aggravate their health status. This study examined the prevalence of intestinal parasites, particularly of Strongyloides stercoralis and intestinal coccidia in patients with the Human Immunodeficiency Virus (HIV)/ Acquired Immunodeficiency Syndrome (AIDS) who were treated at the Specialized Assistance Service (SAE) of Jataí, State of Goiás, Brazil, and analyzed its correlation with clinical, laboratory, and socio-epidemiological parameters. A total of 270 stool samples were analyzed by the Lutz technique, Rugai’s method, Agar Plate Culture, Ritchie’s method and specific staining, Ziehl-Neelsen modified technique, Kinyoun’s method and the rapid safranin method. The prevalence of intestinal parasites was 28.88% including 3.8% of S. stercoralis, Cryptosporidium sp. and Cystoisospora belli. There was a significant positive correlation between intestinal parasites and the clinical status and the use of antiretroviral therapy (ART), smoking, CD4+ lymphocyte counts and sexual orientation. In conclusion, the widespread use of antiretroviral therapy and health assistance contributed to the low prevalence of S. stercoralis and coccidiosis in patients with HIV/ AIDS who were followed up at the SAE.

RESUMO Esta pesquisa estuda as características dos periódicos brasileiros da grande área das Ciências Agrárias indexados na Web of Science e Scopus. Os objetivos específicos são: a) Identificar os periódicos brasileiros da grande área das Ciências Agrárias definidos pela CAPES; b) Descrever as características dos periódicos: ano de criação; entidade editora; indicadores de qualidade; idiomas aceitos; periodicidade; plataformas; identificador persistente; e c) Identificar o patrocínio e o modelo de financiamento dos periódicos. A metodologia utilizada para a pesquisa caracteriza-se como bibliográfica, documental, descritiva e exploratória, com análise quali-quantitativa. O resultado identificou 74 revistas, 71 em acesso aberto e três por subscrição. Todas as 74 revistas estão indexadas na Scopus e 44 em conjunto entre a Scopus e WoS. As principais entidades editoriais são as universidades, que mantêm 50% das revistas, seguidas das associações com 32,4%, institutos de pesquisa com 13,5%, e uma editora comercial com 4,1%. Verifica-se que nenhuma revista é Qualis A1 e a predominância dos títulos estão no estrato B1, com 43,2% (32) revistas. Quanto ao modelo de financiamento, 56,8% (42) revistas adotam a via dourada, 29,7% (32) dos títulos seguem a via platina e 4% subscrição.

ABSTRACT This research studies the characteristics of the p journals Brazilians of the large area of Agrarian Sciences indexed in the Web of specific objective Science and Scopus. The specific objectives are: a) To identify the journals Brazilians of the large area of Agrarian Sciences defined by the CAPES; b) To describe the characteristics of the journals ones: year of creation; entity publishing company; quality indicators; accepted idioms; regularity; platforms; persistent identification; e c) To identify to the sponsorship and the model of financing of the journals ones. The methodology used for the research is characterized as bibliographical, documental, descriptive and exploratória, with quali-quantitative analysis. The corpus of the study is journals the scientific Brazilians registered in the WebQualis of the large area of Agrarian Sciences, defined for the CAPES and indexd in the WoS and resulted Scopus.O it identified 74 you search, 71 in open access and three for subscription. All the 74 periodic are indexed in the Scopus and 44 together between the Scopus and WoS . The main publishing entities are the universities, which maintain 50 % (37) of journals, resulted from the associations with 32,4 % (24), institutes of inquiry with 13,5 % (10), and a commercial publisher with 4,1 % (3). One checks that no journals is a Qualis A1 and the predominance of the titles they are in the stratum B1, with 43,2 % (32) you search. As for the financing model, 56,8 % (42) journals adopt the golden road and 29,7 % (32) of the titles follow the Platine road.

Resumo Identifica os artigos publicados em periódicos indexados na Web of Science, para caracterizar a produção científica sobre Recursos Educacionais Abertos, no âmbito do Ensino Superior. A metodologia é exploratória, descritiva e de abordagem quanti-qualitativa, constituindo o corpus por meio da estratégia de levantamento, cujos dados foram analisados descritivamente e por meio da técnica de análise de conteúdo. Identificaram-se 115 artigos de autoria de 243 pesquisadores, publicados em 43 periódicos, entre 2008 e 2014. Verificou-se que 67% dos periódicos nos quais se publicou o assunto são de acesso pago, concentrando 56% dos artigos em acesso restrito. As instituições do Reino Unido, Espanha e Canadá que mais concentram pesquisadores que publicaram sobre Recursos Educacionais Abertos são todas especializadas em Educação a Distância. Predominaram os autores que atuam na área da Educação (48%), da Computação (22%) e das Engenharias (11%). Na etapa qualitativa, descartaram-se 6 artigos por não constituírem iniciativas de Ensino Superior, de modo que a análise de conteúdo se centrou em 99 artigos em inglês, 8 em espanhol e 2 em português, totalizando 109 artigos analisados na íntegra. Os artigos foram classificados em 7 categorias: 21% recuperação e repositórios; 19% desafios; 16% tecnologias; 14% produção; 13% políticas de incentivo e sustentabilidade; 10% adaptação e reúso; e 4% open courseware. O núcleo das publicações concentra-se em um periódico canadense (28% dos artigos) e em 26 periódicos (60%) da área da educação.

Abstract The present research identifies articles published in journals indexed in the Web of Science to characterize the scientific production on Open Educational Resources, in the higher education area. Descriptive and exploratory methodology of a quantitative and qualitative approach used mixed methods, constituting the research corpus by a survey strategy whose data was analyzed descriptively and through content analysis technique. As a result, it was possible to identify 115 articles of 243 researchers, published in 43 journals between 2008 and 2014. It was found that 67% of the journals with Open Educational Resources publications are of paid access, concentrating 56% of the articles in a restricted access. Institutions in the United Kingdom, Spain and Canada with researchers who have published on Open Educational Resources are all specialized in Distance Education. There was a predominance of authors working in the area of Education (48%), Computing (22%) and Engineering (11%) in comparison to other areas. In the qualitative stage, six articles were discarded so that the content analysis focused on 99 articles in English, eight in Spanish and two in Portuguese, totaling 109 articles analyzed in full. The articles were divided into seven categories: 21% of recovery and repositories, 19% of challenges, 16% of technologies, 14% of production, 13% on incentive policies and sustainability, 10% of adaptation and reuse and 4% on open courseware. It is possible to conclude that publications core focuses on a Canadian journal and 26 journals about education.

ABSTRACT Latex from Carica papaya is rich in bioactive compounds, especially papain, which may help to control parasitic diseases. This study evaluated the efficacy of latex from C. papaya and purified papain against Strongyloides venezuelensis. The Egg Hatching Test (EHT) and the Larval Motility Test (LMT) using fresh and frozen latex (250mg/mL), lyophilized latex (34mg/mL), and purified papain (2.8 mg/mL) were performed. Albendazole (0.025 mg/mL) and ivermectin (316 ppm) were used as positive controls. EHT and LMT were carried out through the incubation of each solution with S. venezuelensis eggs or larvae (± 100 specimens), and results were analyzed after 48h (EHT) or 24, 48, and 72h (LMT). EHT showed that latex preparations at higher concentrations (1:10 to 1:100) resulted in partial or complete destruction of eggs and larvae inside the eggs. The result from the 1:1,000 dilution was similar to the positive control. LMT showed effectiveness in all the tested dilutions compared to negative controls. Purified papain showed a dose-dependent response in the EHT. Purified papain (2.8 mg/ mL) showed similar results to lyophilized latex at 1:1,000 in the EHT. Latex and purified papain from C. papaya were effective against S. venezuelensis eggs and larvae in vitro, suggesting their potential use as an alternative treatment for strongyloidiasis.

O objetivo desta pesquisa é analisar o uso de ferramentas Web pelos periódicos científicos dos países ibero-americanos a fim de identificar quais recursos foram utilizados. Os procedimentos metodológicos utilizados são exploratórios, documentais e quanti--qualitativos. O universo da pesquisa foi composto pelos 883 periódicos ibero-americanos indexados no Institute for Scientific Information, Web of Knowledge e no Scopus, do ano de 2011. A análise das ferramentas Web adotadas pelos periódicos permitiu a identificação de um número maciço de periódicos científicos eletrônicos: 99,21%. Ferramentas Web 2.0 foram identificados em 9,27% das publicações, dentre as quais se destaca o uso de sites de redes sociais, microblogs, blogs e compartilhadores de vídeos e de imagens. A análise das relações entre as características dos periódicos que utilizam recursos 2.0 mostrou a existência de indicadores de impacto maiores nessas publicações em relação às revistas que não utilizam Web 2.0 em alguns países. Conclui-se que os títulos priorizam o artigo tradicional com opção de impressão e a disseminação dos artigos utilizando plataformas Web, além do uso ainda limitado da Web 2.0.

The purpose of this research was to analyze the use of Web tools by scientific journals in Ibero-American countries. The methodological procedures are descriptive, exploratory, documental, quantitative and qualitative. The corpus included 883 Ibero-American journals indexed in 2011 list by the Institute of Scientific Information, Web of Knowledge and Scopus. By analyzing the Web resources used by the journals, we identified a massive number of electronic journals, 99.21%, the Web 2.0 features were identified in 9.27% of the publications, among which the use of social networking sites, microblogs, blogs, video and photo sharing platforms are the highlight outstanding. The analysis of the relationships between the characteristics of the journals that use the 2.0 tools showed higher impact indicators than those in countries that do not use the Web 2.0. It may be concluded that journals disseminate articles using the web platforms and Web 2.0 and prefer keeps traditional articles that can be printed.

RESUMOEste artigo apresenta uma análise de produções discursivas de licenciandos em Letras - Português de um curso de Graduação na modalidade EaD, de uma universidade pública federal do sul do Brasil, no que se refere às suas concepções de linguagem.A fundamentação teórico-metodológica baseia-se nos estudos do Círculo de Bakhtin. Os dados da pesquisa compõem-se de 106 fóruns de discussão; 59 enunciados de atividades avaliativas, postados no ambiente virtual de ensino e aprendizagem no período de 2007 a 2011; e dados gerados por meio de um questionário, respondido por 61 licenciandos nos seus respectivos polos de apoio de ensino presencial. No tocante às concepções de linguagem discursivizadas pelos sujeitos da pesquisa, os dados apontam para: a) a reenunciação de uma concepção de linguagem que concebe a língua como única/homogênea; b) a reenunciação da noção de variação linguística; e c) a ausência discursiva no que se refere à concepção de linguagem como interação. Esses resultados demonstram um descompasso entre a formação docente inicial e o que se espera em termos de formação de professores previsto pelos documentos oficiais de ensino, nos quais o trabalho com as práticas de escuta, leitura e produção textual estão assentadas em uma concepção interacionista da linguagem.

ABSTRACTThis article presents an analysis of discursive productions of undergraduates from a Letters-Portuguese-distance education course at a public university located in Southern Brazil, referring to their conceptions of language. The theoretical and methodological foundation is based on studies from Bakhtin Circle. The research data consist of 106 discussion forums; 59 set of evaluation activities, posted on virtual teaching and learning environment from 2007 to 2011; and data from a questionnaire answered by 61 undergraduates in their respective poles in support of classroom teaching. Referring to the views of discursivization and language conceptions by the research subjects, the data point to: a) reenunciation of the conception of language that conceives language as a homogeneous, single entity; b) reenunciation of the notion of linguistic variation; and c) absence of discourse concerning the conception of language as interaction. These results demonstrate a gap between initial teacher education and what is expected in terms of teacher training provided by official documents of education, in which practices of listening, reading and textual production are settled in an interactionist conception of language .