bluuebunny/crossref_metadata_2025 huggingface dataset:
Silver Nanoparticles Synthesized through Green Methods UsingEscherichia coliTop 10 (Ec-Ts) Growth Culture Medium Exhibit Antimicrobial Properties against Nongrowing Bacterial Strains
Authors: Baltazar-Encarnación Esther , Escárcega-González Carlos E. , Vasto-Anzaldo Ximena G. , Cantú-Cárdenas María Elena , Morones-Ramírez J. Rubén
Published: February 2019

Finding novel antibiotics and antimicrobial materials has become of great importance to modern society due to the alarming increase in the development of multidrug resistance in various bacterial strains. This problem is even more complex when infections involve bacterial strains in stationary metabolic states, since most of the antibiotics found in the market do not have an effect on bacteria in dormant metabolic states. A promising field to aid in the solution of this problem is nanotechnology, since it offers a wide avenue for the development of potential therapeutics, specifically the use of silver metal nanoparticles. Silver nanoparticles have proven to be highly effective antimicrobial agents and excellent candidates to be engineered and designed into clever delivery systems, taking advantage of their rapid and potent toxicity on prokaryotic cells at low concentrations. Metal nanoparticles are most commonly synthetized through one or a series of redox chemical reactions using powerful but environmentally toxic-reducing agents. Therefore, in this work, we propose a biosynthesis method that allows the production of nanoparticles, with homogenous shapes and narrow size distributions, through an environmentally friendly technique that does not produce toxic residues. Here, silver nanoparticles were produced from silver salt (AgNO3) using three different growth culture media residues fromE. colitop 10. The three different culture media residues used included LB, LBN, and LBE; all of them displaying a different chemical and nutrient composition. Here, after characterization of the different silver nanoparticles produced with the different media, we demonstrated that the LB culture-conditioned media was the most suitable to produce them since they displayed the most narrow size distribution, with an average 10.6 nm in diameter, a relatively low standard deviation of 5.5 nm, and a narrow UV-vis spectrum absorption peak at 420 nm. The other methods presented larger nanoparticle sizes and broader size distributions. Furthermore, nanoparticles produced with LB Lennox were found to be, at very low concentrations, effective antimicrobial agent againstE. colitop 10 at stationary phase. Therefore, these results seem to contribute knowledge linked to the production of antimicrobial nanoparticles (Ag-NPs) through green synthesis and represent a platform to treat infections caused by nongrowing bacteria.
Hypertriglyceridemia and Its Association with HbA1c Test: A ProspectiveIn VivoControlled Study
Authors: Rodriguez-Gutierrez Rene , Mancillas-Adame Leonardo G. , Rodríguez-Tamez Giselle , Diaz Gonzalez-Colmenero Alejandro , Solis-Pacheco Ricardo Cesar , Elizondo-Plazas Ana Sofia , Santos-Santillana Karla M. , Gonzalez-Sariñana Linda , Gonzalez-Nava Victoria , Gonzalez-Gonzalez José Gerardo
Published: February 2019

Background. Hypertriglyceridemia and hyperglycemia coexist in 30-60% of patients with diabetes. The impact of hypertriglyceridemia regarding HbA1c assay reliability remains uncertain. Therefore, we conducted a prospectivein vivocontrolled study with the aim of defining the association between triglyceride levels and HbA1c.Methods. A total of 44 patients with an index-hospital admission diagnosis of diabetic ketoacidosis or hypertriglyceridemia-induced pancreatitis, as a model for acute elevation of triglycerides, were recruited. Blood samples were drawn for the measurement of HbA1c, triglycerides, glucose, and hemoglobin at baseline and subsequently 24 and 48 hours after admission. HbA1c analysis was performed with high-performance liquid chromatography Bio-Rad D10 (NGSP approved).Results. All patients completed the study protocol. A difference between mean triglycerides from day 0 (baseline) to day 2 of 1567.2 mg/dL was observed. We found a difference between mean serum HbA1c from days 0 to 2 of 0.09% [1 mmol/mol] (p=0.004). Moreover, a weak correlation between the mean difference of HbA1c and triglycerides from baseline to day 2 was found to be statistically significant (r=0.256,p=0.015). None of these findings, however, are clinically significant.Conclusion. Triglycerides do not impair the interpretation of HbA1c assay. Patients and clinicians can now be confident that hypertriglyceridemia is not an important factor when interpreting HbA1c results.
The Influence of Speed and Position in Dynamic Gesture Recognition for Human-Robot Interaction
Authors: Castillo José Carlos , Alonso-Martín Fernando , Cáceres-Domínguez David , Malfaz María , Salichs Miguel A.
Published: February 2019

Human communication relies on several aspects beyond the speech. One of them is gestures as they express intentions, interests, feelings, or ideas and complement the speech. Social robots need to interpret these messages to allow a more natural Human-Robot Interaction. In this sense, our aim is to study the effect of position and speed features in dynamic gesture recognition. We use 3D information to extract the user’s skeleton and calculate the normalized position for all of its joints, and using the temporal variation of such positions, we calculate their speeds. Our three datasets are composed of 1355 samples from 30 users. We consider 14 common gestures in HRI involving upper body movements. A set of classification techniques is evaluated testing these three datasets to find what features perform better. Results indicate that the union of both speed and position achieves the best results among the three possibilities, 0.999 of F-score. The combination that performs better to detect dynamic gestures in real time is finally integrated in our social robot with a simple HRI application to run a proof of concept test to check how the proposal behaves in a realistic scenario.
Effect of Puerarin, Baicalin and Berberine Hydrochloride on the Regulation of IPEC-J2 Cells Infected with Enterotoxigenic Escherichia coli
Authors: Liu Xiaoxi , Liu Fenghua , Ma Yunfei , Li Huanrong , Ju Xianghong , Xu Jianqin
Published: February 2019

Puerarin, baicalin and berberine hydrochloride are the main components of Gegen Qinlian Decoction, which has been used to treat diarrhoea in China for hundreds of years, yet the biological function and molecular mechanism of these components are not clear. To investigate the effects of puerarin, baicalin, and berberine hydrochloride on the regulation of porcine intestinal epithelial cells (IPEC-J2 cells) infected with enterotoxigenic Escherichia coli (ETEC). IPEC-J2 cells were pretreated with puerarin (200 μg/mL), baicalin (1 μg/mL), and berberine hydrochloride (100 μg/mL) at 37°C for 3 h and then coincubated with the F4ac ETEC bacterial strain 200 at 37°C for 3 h. ETEC infection damaged the structure of IPEC-J2 cells, upregulated mucin 4 (P < 0.01) and mucin 13 mRNA (P < 0.05) expression, increased the apoptosis rate (P < 0.05), and promoted inflammatory responses (IL-6 and CXCL-2 mRNA expression) in IPEC-J2 cells by activating the nuclear factor-κB (NF-κB) signaling pathway. Pretreatment with puerarin, baicalin, and berberine hydrochloride improved the structure and morphology of IPEC-J2 cells and inhibited ETEC adhesion by downregulating specific adhesion molecules. Pretreatment with baicalin decreased the inflammatory response; pretreatment with baicalin and berberine hydrochloride decreased the inflammatory response mediated by the NF-κB signaling pathway. Pretreatment with puerarin, baicalin, and berberine hydrochloride protected IPEC-J2 cells from ETEC infection by inhibiting bacterial adhesion and inflammatory responses.
Network Pharmacology Deciphering Mechanisms of Volatiles of Wendan Granule for the Treatment of Alzheimer’s Disease
Authors: Liu Jun-feng , Hu An-na , Zan Jun-feng , Wang Ping , You Qiu-yun , Tan Ai-hua
Published: February 2019

Objective. To explore the mechanisms of the volatiles of Wendan granule (WDG) for the treatment of Alzheimer’s disease, network pharmacology method integrating absorption, distribution, metabolism, and excretion (ADME) screening, target fishing, network constructing, pathway analysing, and correlated diseases prediction was applied. Methods. Twelve small molecular compounds of WDG were selected as the objects from 74 volatiles with the relative abundances above 2 %, and their ADME parameters were collected from Traditional Chinese Medicine Systems Pharmacology platform (TCMSP), and the corresponding targets, genes, pathways, and diseases were predicted according to the data provided by TCMSP, DrugBank, Uniport, and the Database for Annotation, Visualization, and Integrated Discovery (DAVID). Then the related pathways and correlation analysis were explored by the Kyoto Encyclopedia and Genomes (KEGG) database. Finally, the networks of compound target, target pathway, and pathway disease of WDG were constructed by Cytoscape software. Results. Twelve compounds interacted with 49 targets, of which top three targets were gamma-aminobutyric acid receptor subunit alpha-1 (GABRA1), prostaglandin G/H synthase 2 (PGHS-2), and sodium-dependent noradrenaline transporter. Interestingly, these targets were highly associated with depression, insomnia, and Alzheimer’s disease that mainly corresponded to mental and emotional illnesses. Conclusion. The integrated network pharmacology method provides precise probe to illuminate the molecular mechanisms of the main volatiles of WDG for relieving senile dementia related syndromes, which will also facilitate the application of traditional Chinese medicine as an alternative or supplementary to conventional treatments of AD, as well as follow-up studies such as upgrading the quality standard of clinically applied herbal medicine and novel drug development.
Werner’s Syndrome: Understanding the Phenotype of Premature Aging—First Case Described in Colombia
Authors: Rincón A. , Mora L. , Suarez-Obando F. , Rojas J. A.
Published: February 2019

Werner’s syndrome (WS) is an autosomal recessive genetic disease, which is mainly characterized by scleroderma-like skin changes, juvenile cataracts, short stature, and signs of premature aging. We report a case of a 48-year-old male patient, who presents with cardinal signs of WS including high-pitched voice, sclerotic skin lesions mainly on feet, premature greying of scalp hair, bilateral cataracts, and “bird-like” facial appearance. In addition, the patient presents other clinical characteristics observed in patients with WS such as short stature, type 2 diabetes mellitus, hypogonadism, parental consanguinity, and a history of a sibling with similar clinical characteristics. WRN gene sequencing identified the homozygous pathogenic variant NM_00553.4: c.2581C>T (NP_000544.2: pGln861Ter). This is the first case of WS reported in the Colombian population. We report this case to avoid misdiagnosis of this infrequent condition and allow timely identification of potential complications associated with premature aging, especially malignancies, cardiovascular and metabolic diseases.
Long-Term Storage Effects on Stability of Aβ1–40, Aβ1–42, and Total Tau Proteins in Human Plasma Samples Measured with Immunomagnetic Reduction Assays
Authors: Chiu Ming-Jang , Lue Lih-Fen , Sabbagh Marwan N. , Chen Ta-Fu , Chen H.H. , Yang Shieh-Yueh
Published: February 2019

Background: The stability of Alzheimer’s disease (AD) biomarkers in plasma, measured by immunomagnetic reduction (IMR) after long-term storage at –80°C, has not been established before. Method: Ninety-nine human plasma samples from 53 normal controls (NCs), 5 patients with amnestic mild cognitive impairment (aMCI), and 41 AD patients were collected. Each plasma sample was aliquoted and stored as single-use aliquots at –80°C. The baseline measurements for Aβ1–40, Aβ1–42, and total Tau protein (T-Tau) concentrations for each sample were done within 3 months of blood draw by IMR. They are referred to as baseline concentrations. A separate aliquot from each sample was assayed with IMR to assess the stability of the measured analytes during storage at –80°C between 1.1 and 5.4 years. This is referred to as a repeated result. Results: IMR shows that plasma levels of Aβ1–40 and Aβ1–42 exhibit stability over 5-year storage at –80°C and that plasma levels of T-Tau are less stable (approximately 1.5 years). Conclusion: Although the measured concentrations of T-Tau in human plasma may alter during storage, the diagnostic utility of the results are only slightly affected when the product of Aβ1–42 and T-Tau concentrations are used. The results show that the overall agreement between baseline and repeated measurements in the ability of discriminating NCs from aMCI/AD patients is higher than 80%.
Karyotype Analysis of Four Blind Snake Species (Reptilia: Squamata: Scolecophidia) and Karyotypic Changes in Serpentes
Authors: Matsubara Kazumi , Kumazawa Yoshinori , Ota Hidetoshi , Nishida Chizuko , Matsuda Yoichi
Published: February 2019

The suborder Serpentes is divided into 2 infraorders, Scolecophidia and Alethinophidia, which diverged at an early stage of snake diversification. In this study, we examined karyotypes of 4 scolecophidian species (Letheobia simonii, Xerotyphlops vermicularis, Indotyphlops braminus, and Myriopholis macrorhyncha) and performed FISH with 18S-28S rDNA as well as microchromosomal and Z chromosome-linked genes of Elaphe quadrivirgata (Alethinophidia) to investigate the karyotype evolution in the scolecophidian lineage. Diploid chromosome numbers of X. vermicularis and L. simonii were 30 (16 macrochromosomes and 14 microchromosomes) and 32 (16 macrochromosomes and 16 microchromosomes), respectively. The karyotype of a female M. macrorhyncha consisted of 15 macrochromosomes and 19 microchromosomes, including a heterochromatic microchromosome, indicating the presence of a heteromorphic chromosome pair. E. quadrivirgata Z-linked genes mapped to chromosome 4 of M. macrorhyncha, not to the heteromorphic pair. Therefore, M. macrorhyncha may have differentiated ZW sex chromosomes which are not homologous to those of E. quadrivirgata. One of the E. quadrivirgata microchromosomal genes mapped to the terminal region of chromosome 4q in X. vermicularis, suggesting that fusions between microchromosomes and macrochromosomes occurred in this species. rDNA was localized in different macrochromosomal pairs in the 2 diploid scolecophidian snakes examined here, whereas the gene location in a microchromosomal pair was conserved in 5 alethinophidian species examined. These results might imply the occurrence of chromosome fusions in the scolecophidian lineages. In I. braminus, a unique parthenogenetic snake with a triploid karyotype (21 macrochromosomes and 21 microchromosomes), morphological heteromorphisms were identified in chromosomes 1 and 7. Such heteromorphisms in 2 chromosomes were also observed in individuals from distant locations in the broad distribution range of this species, suggesting that the heteromorphisms were fixed in the genome at an early stage of its speciation.
Effects of a Hypocaloric, Nutritionally Complete, Higher Protein Meal Plan on Regional Body Fat and Cardiometabolic Biomarkers in Older Adults with Obesity
Authors: Serra Monica C. , Beavers Daniel P. , Henderson Rebecca M. , Kelleher Jessica L. , Kiel Jessica R. , Beavers Kristen M.
Published: February 2019

Background: Whether improvements in cardiometabolic health following weight loss (WL) are associated with changes in regional body fat distribution (gluteal vs. ­android) is not well documented. Methods: Older (age: 70 ± 4 years; mean ± SD) adults with obesity were randomized to a 6-month WL program (WL; n = 47), accomplished using a hypocaloric, nutritionally complete, higher protein ­(targeting ≥1.0 g/kg/day) meal plan, or a weight stability (WS; n = 49) program. Android, gynoid, visceral, and subcutaneous abdominal fat masses (via dual energy X-ray absorptiometry ) and fasting glucose and lipid profiles were assessed at baseline and 6 months. Results: The WL group lost more body weight (WL: –8.6% vs. WS: –1.7%, p < 0.01), resulting in a reduction in fat mass at each region only following WL (all p < 0.05). The decline in the ratio of android/gynoid fat mass also was significant only following WL, resulting in greater declines than WS (mean [95% CI]; WL: –0.026 [–0.040 to –0.011] vs. WS: 0.003 [–0.012 to 0.019] g, p < 0.01). The change in the ratio of visceral/subcutaneous abdominal fat mass was not significant in either group and did not differ between groups (WL: 0.65 [–0.38 to 1.68] vs. WS: 0.05 [–1.00 to 1.10] g, p = 0.42). In general, the improvements in glucose and lipid profiles were associated with declines in fat mass at the gynoid and android regions (r’s = 0.20–0.42, all p < 0.05), particularly the visceral depot but not the ratios. Conclusion: WL achieved via a hypocaloric, nutritionally complete, higher protein meal plan is effective in reducing body fat in the android, gynoid, and visceral depots, which relate to cardiometabolic improvements.
Excellent Response to Anti-PD-1 Therapy in a Patient with Hepatocellular Carcinoma Intolerant to Sorafenib
Authors: Roderburg Christoph , Berres Marie-Luise , Wree Alexander , Loosen Sven H. , Luedde Tom , Trautwein Christian
Published: February 2019

Background: Hepatocellular carcinoma (HCC) represents the most common primary carcinoma of the liver. Most patients present with advanced or metastatic HCC at diagnosis and face a very limited prognosis. Systemic treatment with the tyrosine-kinase inhibitors sorafenib or lenvatinib is considered as the treatment of choice in these patients. In patients intolerant to tyrosine-kinase inhibitors, no standard therapy is approved so far, but several agents have demonstrated efficacy in clinical trials. As such, the checkpoint inhibitors nivolumab and pembrolizumab have been shown to induce tumor response and to prolong survival in patients with advanced HCC, both when intolerant to sorafenib or after failure of a first-line therapy with sorafenib. Case Report: We here report the case of a patient with advanced HCC that demonstrated severe toxicity upon first-line treatment with sorafenib. Administration of sorafenib was discontinued and after careful consideration the patient started a second-line treatment with the PD-1 antibody nivolumab. Strikingly, this treatment led to a significant regression of tumor size and a drastic reduction of alpha-fetoprotein serum concentrations. At 17 months after initiation of treatment, the patient is still alive in excellent condition with sustained tumor response. Conclusion: In summary, we report on a very rare case of a patient with HCC demonstrating an almost complete response to checkpoint inhibitor treatment.
Do Zumbi dos Palmares ao reino de Ginga
Authors: Nascimento Naira N Almeida , Polese Edna da Silva
Published: February 2019

Por meio da análise de dois romances de José Eduardo Agualusa, O ano em que Zumbi tomou o Rio (2002) e de A rainha Ginga (2014), publicado no Brasil em 2015, pretende-se estudar a centralidade que as culturas de Língua Portuguesa exercem em sua produção desde 1997. No caso dos dois romances, o protagonismo é emprestado a duas personagens históricas de culturas de origem africana, Zumbi e Ginga, que compõem um intrincado tabuleiro de identidades na triangulação lusófona desenhada pelo Oceano Atlântico. A reflexão sobre língua, poesia e tradução constituem, contudo, a tônica nunca ausente dos romances e contos desse prosador angolano.
O burguês confrontado
Authors: Dias Pedro Lotti Carvalho
Published: February 2019

Nos dias 8 e 15 de novembro de 1931, Mário de Andrade publicou dois artigos no jornal  Diário Nacional em que tematizava a febre da malária, conhecida na floresta amazônica como a “maleita”. Nestes artigos, valendo da posição de intelectual que a ele era reconhecido, confrontara o que era dado como “bom senso” burguês ao lançar o disparate de que a maleita amazônica possuía virtudes inefáveis aos habitantes de São Paulo. Esta publicação contara com o material de testemunho de viagem de Mário de Andrade produzido na expedição para a Amazônia organizada pela sra. Olivia Penteado. Com a legitimidade para tratar de assuntos amazônicos que lhe vinha da expedição, o autor descreveu o “maleiteiro” da Amazônia como virtuoso naquilo que em São Paulo era escasso, a paciência, sendo por isto o seu texto uma confrontação aberta à arrogância dos cidadãos brasileiros que alcançaram um elevado grau de urbanidade em seus estilos de vida. Neste artigo exporemos o conteúdo deste confronto.
escrita pela sarjeta
Authors: Alves-Costa Lucas Piter
Published: February 2019

O objetivo deste artigo é discutir sobre a autoria na tradução intersemiótica em quadrinhos da obra O Alienista, de Machado de Assis, por Fábio Moon e Gabriel Bá. Publicado em 2007, O Alienista de Moon e Bá explora a linguagem das histórias em quadrinhos, rompendo os limites da linguagem verbal e criando uma obra outra. A natureza do sistema semiótico das histórias em quadrinhos possibilita inovar a narrativa machadiana. A impressão de unidade da obra é construída pela interseção de fatores que apontam para a sua materialidade, tais como: (a) um sistema semiótico, (b) um campo social no qual essa materialidade surge e da qual ela é parte constitutiva, (c) os posicionamentos de sujeitos instituídos por esse campo. No caso da tradução intersemiótica analisada, cada um desses fatores é representado de maneira própria, tornando visíveis as diferenças entre Literatura e Quadrinhos. A discussão aborda as noções de autor e autoria, de obra, de linguagem quadrinística, dentre outras.
Colonialidades em Movimento
Authors: Moyano Thiago Marcel
Published: February 2019

Os estudos de gênero e a teoria pós-colonial estabeleceram novos paradigmas à perquirição das subjetividades no mundo contemporâneo. No campo dos estudos literários, percebe-se, por exemplo, o crescente número de trabalhos que ora revisitam o cânone ocidental, ora questionam o estatuto do mesmo a partir destas visadas, reelaborando, assim, o que se tem definido por ‘Literatura’, tanto no que tange às vozes autorais tradicionalmente legitimadas, quanto os temas e formas que têm sido privilegiados no decorrer da História. Ao longo deste processo de desconstrução de “verdades” epistêmicas, destaca-se, tanto para a Teoria de Gênero quanto Pós-Colonial, a necessidade de se repensar o papel do corpo na constituição de subjetividades. Assim, este trabalho tem por objetivo analisar, sob uma perspectiva interseccional, o conto “Out on Main Street” (1993) da escritora indocaribenha Shani Mootoo. Acredito que a autora projete textualmente o corpo, trazendo à tona uma crítica das colonialidades de poder e do gênero e seus múltiplos entrecruzamentos na trama social em que a personagem-narradora se vê inserida: da diáspora caribenha. Trabalhos de Aníbal Quijano, Fernanda Belizário, Judith Butler, Leticia Sabsay, entre outros servirão de aporte teórico para esta investigação.
Editorial
Authors: Fígaro Roseli
Published: February 2019

Editorial
1964.1968. Memórias de um tempo em que tanques e fuzis atropelaram sonhos e deixaram espíritos sem rumo
Authors: Magno Maria Ignes Carlos
Published: February 2019

Os anos 1960 foram convulsivos em grande parte do mundo. Lembrado como a era da imaginação e das revoluções políticas e sociais, no Brasil, esse percurso que foi interrompido pelo Golpe Militar de 1964, cortando de forma abrupta os vínculos que fundavam a ação política e a criatividade da vida intelectual. Pensando naqueles anos sugiro para essa resenha o filme O outro lado do paraíso (2014), de André Ristum, e o documentário Marighella (2012), de Isa Grinspum Ferraz. O filme foi baseado na obra homônima de Luiz Fernando Emediato, escrita em homenagem a seu pai, Antônio Trindade, e o documentário de Isa Grinspum Ferraz, realizado em homenagem a seu tio Carlos Marighella. A escolha dos filmes é uma oportunidade para conhecermos duas personagens que sonharam e tentaram realizar seus sonhos no Brasil dos anos 1960. Uma anônima e a outra conhecida, duas personagens igualmente atropeladas em seus sonhos e banidas da mesma história.
Hilda Hilst
Authors: Rebechi Junior Arlindo
Published: February 2019

A apresentação da poeta Hilda Hilst se faz sob dois polos, entre tantos outros possíveis: (1) naquilo que representa o seu momento de formação inicial, representado pelo seu livro de estreia Presságio (1950), em que temas de interesse ali gestados seriam amplamente explorados pela poeta em obras posteriores; (2) e o seu interesse em dialogar com os modelos clássicos da tradição lírica, que foi objeto de pesquisa e produção de poemas ao longo de sua jornada como poeta.
Conectar ou desconectar
Authors: Assis Leandro Marlon Barbosa , Farbiarz Alexandre
Published: February 2019

O objetivo deste artigo é discutir a naturalização do discurso de que a melhoria do ensino nas escolas se daria a partir da introdução de tecnologias dentro de um cotidiano escolar. Para tal, investigamos o consumo tal como proposto por Bauman para compreender, sob a perspectiva gramsciana, suas relações com o Estado e a sociedade civil e a atuação da ideologia na formulação da cultura das mídias. Desse modo, a hipótese do investimento em educação crítica para as mídias se coloca como ponto a ser verificado.
Aprendizagem ativa conectada em meio ao caos do estudante-ator-rede
Authors: Prado Magaly Parreira
Published: February 2019

Este artigo traz uma reflexão sobre educação na comunicação. Modelos topdown são postos em discussão e em paulatino desuso desde a chegada da internet. Professores em conjunto aos alunos descobrem e atualizam o conhecimento em tempo real e compartilham saberes criando laços. Eis apenas dois dos princípios da base deste estudo, o Conectivismo, que Siemens (2005) postula:  a manutenção de um conhecimento atualizado e rigoroso é o objetivo de todas as atividades de aprendizagem coletivistas e a aprendizagem pode residir em dispositivos não humanos. Sua teoria além de levar em conta as tendências da aprendizagem, o uso da tecnologia e das redes enfatiza a diminuição da meia-vida do conhecimento. Assim, uma das propostas foi cruzar o pensamento de Siemens com autores como, entre outros, Downes, Brown, Santaella, e Latour que nos inspira a aplicar no dia a dia as ações, transcrições, interações com os estudantes a colaborar nesta reflexão.
Representação visual e cognição
Authors: Drigo Maria Ogécia , Souza Luciana Coutinho Pagliarini de
Published: February 2019

Com o propósito de averiguar em que medida as representações visuais contribuem para desencadear processos cognitivos, selecionamos, para este artigo, as representações visuais de livros de Ciências e Matemática que compõem a amostra estratificada dos resenhados no Guia de livros didáticos 2011, do Programa Nacional do Livro Didático (PNDL), para as séries finais do Ensino Fundamental de Ciências, Matemática, História, Geografia, Língua Portuguesa e Língua Estrangeira no corpus de pesquisa desenvolvida. Após primeira sistematização, as diversas modalidades de representação visual foram classificadas e analisadas sob a perspectiva da semiótica peirceana. As reflexões são relevantes para a interface comunicação/educação, pois trazem à tona a possibilidade de que as disciplinas escolares envolvidas sejam vistas como linguagens que, ao incorporarem signos distintos do verbal, impliquem novos conhecimentos sobre tais modalidades de representações.
Editorial
Authors: Editorial Comissão
Published: February 2019

Editorial cadernos de Campo vol. 27
O princípio de individuação (contribuição a uma filosofia africana)
Authors: Bulamah Rodrigo Charafeddine , Bastide Roger
Published: February 2019

Neste texto, Roger Bastide elabora uma análise sobre a noção de pessoa em África e suas bases filosóficas, estabelecendo comparações com o Ocidente e suas formas filosóficas de pensar identidade e alteridade.
¡No es mi culpa!
Authors: Natalia Natalia Escobar Garcia
Published: February 2019

En este artículo se discuten algunos riesgos que enfrentamos las antropólogas como investigadoras cuando realizamos trabajo de campo y las decisiones que debemos tomar en situaciones extremas para proteger nuestra integridad, que finalmente marcan nuestros trabajos de investigación. A través de mis experiencias etnográficas entre 2010 y 1017, en Bahía Málaga–Valle del Cauca-Colombia, pretendo interpretar el campo de investigación como un espacio sexualizado que nos confronta como mujeres y académicas. Además, argumento que es necesario implementar protocolos de seguridad para investigadoras durante el desarrollo de investigación etnográfica.
Prazeres perigosos
Authors: Grunvald Vitor
Published: February 2019

GREGORI, Maria Filomena. Prazeres perigosos: erotismo, gênero e os limites da sexualidade. São Paulo. Companhia das Letras, 2016. 288p.
Pamphalea tenuissima (Nassauvieae, Asteraceae), a new species from southern Brazil
Authors: TRUJILLO CRISTINA , BONIFACINO JOSÉ M. , PASINI EDUARDO
Published: February 2019

Pamphalea tenuissima (Asteraceae), a new species from southern Brazil, is described. The new species is characterized by its finely dissected leaves, herbaceous texture and decumbent habit in most, if not all, of its stems. A detailed morphological description, illustrations, images and a distribution map, ecological preferences and phenology are provided.
Reappraisal of Tashiroea as a genus independent of Bredia (Melastomataceae) based on molecular data
Authors: KOKUBUGATA GORO , NAKAMURA KOH , KUO WEN-HSI , QI ZHE-CHEN , CHUNG KUO-FANG , FU CHENG-XIN , SUZUKI YUMIKO , YOKOTA MASATSUGU
Published: February 2019

Molecular phylogenetic analyses using ITS sequences were used to reconsider the taxonomic validity of Bredia okinawensis, B. yaeyamensis, and B. sinensis as an independent genus Tashiroea. The result showed that the three species formed a different phylogenetic lineage from other species of Bredia including its type species. We suggest that B. okinawensis, B. yaeyamensis, and B. sinensis should be treated as T. okinawensis, T. yaeyamensis, and T. sinensis, respectively, following Ito and Matsumura (1899) and Diels (1924).
Revision of the genus Stenogephyra Lyneborg (Diptera: Therevidae: Phycinae)
Authors: WEBB DONALD W. , HAUSER MARTIN
Published: February 2019

The genus Stenogephyra Lyneborg is revised and includes seven species from the Afrotropical Region. Stenogephyra dianeae spec. nov., S. janiceae spec. nov., S. namibiensis spec. nov., S. parkeri spec. nov., and S. schlingeri spec. nov. are new to science. Each new species is described and illustrated and the pupa of S. torrida is described and figured. Distribution maps for each species are given. A key to the species of Stenogephyra is provided.
The Hemiptera-Sternorrhyncha (Insecta) of Hong Kong, China—an annotated inventory citing voucher specimens and published records
Authors: MARTIN JON H. , LAU CLIVE S.K.
Published: February 2019

An account of the Sternorrhyncha recorded from Hong Kong, comprising approximately 485 species, is presented. This is primarily based upon voucher holdings in the collection of the Natural History Museum, London and it includes incompletely identified taxa. Also included are records based solely on published data. Host plant data are included where known and there are four appendices for quick cross-reference of names, groups and hosts. One new species in the Aleyrodidae is described, Rhachisphora takahashii sp. nov.. One new synonymy in the Aleyrodidae is proposed, Aleurocanthus cheni Young (1942) becoming a junior synonym of A. spiniferus (Quaintance, 1903) syn. nov.. Two nomenclatural changes in the Psylloidea are proposed: Colophorina hungtouensis Fang & Yang (1986) comb. nov. is transferred from Psylla;  Macrohomotoma sinica Yang & Li (1984) is proposed as a junior synonym of M. gladiatum Kuwayama (1908), syn. nov.. One nomenclatural change in the Diaspididae (Coccoidea) is proposed: Neoparlatoria lithocarpi Takahashi (1934) is removed from synonymy with N. formosana Takahashi (1931), stat. rev.
Serpulidae (Annelida: Polychaeta) from the Suez Canal—From a Lessepsian Migration Perspective (a Monograph)
Authors: BEN-ELIAHU M. NECHAMA , HOVE HARRY A. TEN
Published: February 2019

Data on Serpulidae collected in the Suez Canal were assembled and analyzed. Five serpulid taxa are reported from the canal for the first time bringing the number of serpulids to at least 16. The Systematic Section compiles revised literature records, confirmed synonymies of the taxa, redescriptions where necessary, photographic studies of taxa and remarks on the populations studied. The possible Indo-West-Pacific or Mediterranean origins of the taxa in the Suez Canal are considered and their chronological records and distributions tracked within the Red Sea, the Gulfs of Aqaba and Suez, the Suez Canal and the Levant Basin based on the compiled literature and our extensive databases. Two Lessepsian migrants, Hydroides heterocerus and H. homoceros, show evidence of morphological variability along their migration route; the last also provides an example of a founder effect. Problems of identifying Protula and Salmacina taxa are addressed, along with remarks on the “cosmopolitan” designations of some taxa. Various hypotheses concerning Lessepsian migration are discussed, and attributes making Lessepsian migrant serpulid tubeworms successful invasive species are evaluated.
A preliminary bibliographic survey of the insects found in poultry houses from the Neotropical Region, with remarks on selected taxa shared with native birds' nests
Authors: IORIO OSVALDO DI , TURIENZO PAOLA
Published: February 2019

Species of insects associated to the habitat of Gallus gallus (Aves: Phasianidae) in the Neotropical Region belong to 144 identified species (42 Coleoptera; 14 Diptera; 17 Hymenoptera; 9 Siphonaptera; 1 Lepidoptera; 56 Hemiptera (one hybrid); 5 Dermaptera); 33 identified to genus (21 Coleoptera; 3 Diptera; 7 Hymenoptera; 1 Hemiptera; 1 Blattaria); 37 identified to family (23 Coleoptera; 9 Diptera; 2 Hymenoptera; 1 Lepidoptera; 2 Hemiptera); and 6 to order (2 Coleoptera; 1 Hymenoptera; 1 Siphonaptera; 1 Psocoptera; 1 Dermaptera). Most of the insects are haematophagous ectoparasites (Hemiptera; Siphonaptera; Diptera), detritivores (Coleoptera; Lepidoptera; Diptera; Blattaria), predators (Coleoptera; Diptera; Hemiptera; Dermaptera; Hymenoptera), and parasitoids (Hymenoptera). A total of 46 native American species and/or subspecies of Triatominae (Hemiptera: Reduviidae) were found in chicken houses, from which 18 were also found in birds’ nests. It was recently observed that other insects from poultry houses, generally exotic species, had colonized native American birds’ nests. Comments and remarks of selected taxa also found in birds’ nests from Argentina and other countries are provided.
Megalomma Johansson, 1925 (Polychaeta: Sabellidae) from America and other world-wide localities, and phylogenetic relationships within the genus
Authors: TOVAR-HERNÁNDEZ MARÍA ANA , CARRERA-PARRA LUIS F.
Published: February 2019

The present study deals with the revision of type and non-type material from 14 species of Megalomma Johansson, 1925 (Polychaeta: Sabellidae) which have been described from America: M. bioculatum (Ehlers, 1887), M. carunculata Tovar-Hernández and Salazar-Vallejo, 2008, M. circumspectum (Moore, 1923), M. coloratum (Chamberlin, 1919), M. fauchaldi Giangrande, Licciano and Gambi, 2007, M. gesae Knight-Jones, 1997, M. heterops Perkins, 1984, M. lobiferum (Ehlers, 1887), M. modestum (de Quatrefages, 1866), M. pacifici (Grube, 1859), M. perkinsi Tovar-Hernández and Salazar-Vallejo, 2006, M. pigmentum Reish, 1963, M. roulei (Gravier, 1908b) and M. splendidum (Moore, 1905); five from other world-wide localities: M. acrophthalmos (Grube, 1878), M. claparedei (Gravier, 1908a), M. lanigera (Grube, 1846), M. mushaense (Gravier, 1908a), M. sp.; and the formal description of a new species: Megalomma georgiense n. sp., from USA. The genus Megalomma was amended based on radiolar, peristomial and chaetal features. Megalomma roulei (Gravier, 1908b) is declared incertae sedis. Megalomma clara (Chamberlin, 1919) is synonymized with M. coloratum (Chamberlin, 1919). Megalomma pigmentum Reish, 1963 and M. monoculata Hartmann-Schröder, 1965 are cryptic. A key is included to the American species of Megalomma. A cladistic analysis was conducted based on examination of type material from the species reviewed in this study and from twelve species based on original descriptions (M. cinctum Fitzhugh, 2003, M. inflata Capa & Murray, 2009, M. interrupta Capa and Murray, 2009, M. kaikourense Knight-Jones, 1997, M. messapicum Giangrande and Licciano, 2008, M. miyukiae Nishi, 1998, M. multioculatum Fitzhugh, 2002, M. nechamae Knight-Jones, 1997, M. phyllisae Capa and Murray, 2009, M. trioculatum Reish, 1968, M. quadrioculatum (Willey, 1905) and M. vesiculosum (Montagu, 1815)). The phylogenetic reconstruction of Megalomma using parsimony analysis of 32 morphological characters yielded 26 equally most parsimonious trees (CI= 0.38, RI= 0.56). The hypotheses by Capa and Murray (2009) that considered species with dorsal collar margins fused to the faecal groove (Knight-Jones’s group 1) as part of an apomorphic clade, and those with dorsal collar margins unfused to the faecal groove (Knight-Jones’s group 2) as plesiomorphic, are not supported in this present study. In our analysis, species nested in group 2 comprises one of the most derived clades, while the clade containing species of group 1 was not recovered. DNA barcoding of M. coloratum, M. lobiferum and M. carunculata is included.
Phylogenetic review of dobsonflies of the subfamily Corydalinae and the genus Corydalus Latreille (Megaloptera: Corydalidae)
Authors: CONTRERAS-RAMOS ATILANO
Published: February 2019

Phylogenetic relationships of the World genera of dobsonflies, subfamily Corydalinae, are reappraised, as well as those of species of the New World genus Corydalus, both on the basis of morphological characters. Previous phylogenetic hypotheses of dobsonfly genera by Glorioso, Penny, and Contreras-Ramos, respectively, are re-evaluated, and a fourth revised phylogeny is presented. Ninety-five characters of 10 taxa, one outgroup and nine ingroup taxa, were used in the updated analysis of Corydalinae. It recognizes four lineages, with Chloroniella as sister to the other three, of which the Nevromus lineage (Acanthacorydalis + Nevromus + Neoneuromus) is sister to the Corydalus lineage (Chloronia + Platyneuromus + Corydalus), and both as a group are sister to the Protohermes lineage (Protohermes + Neurhermes). The main changes in the updated Corydalinae phylogeny are the placement of Chloroniella as sister to all other dobsonfly genera, and the placement of Acanthacorydalis as a member of the Nevromus lineage. Previously, Penny had proposed Chloroniella as sister to all dobsonfly genera except the Protohermes lineage, and both Glorioso and Penny, respectively, placed Acanthacorydalis as sister to the Corydalus lineage. About Corydalus, its species phylogeny is herein updated, as four species from Venezuela were added to the genus after its taxonomic revision. For the new phylogeny, 120 characters of 35 taxa, two outgroup and 33 ingroup taxa, were used. It produced a strict consensus of two trees, better resolved than the previous one. The C. arpi species group is moved to sister of all other species except the C. cephalotes species pair, while the C. batesii species group is conserved, being the only unresolved group within the phylogeny. Two of the species added, C. hayashii and C. mayri, belong to the well defined C. arpi species group, of Guayana Shield affinity, whereas C. crossi is sister to a large and widespread group beginning with the C. nubilus species group, and C. clavijoi is sister to C. tesselatus within the latter group.
Morphological variation in S. minusculum Lutz and S. oyapockense Floch and Abonnenc and a redescription of the larva of S. minusculum (Diptera, Simuliidae) in the Neotropical Region
Authors: HERNÁNDEZ LUIS MIGUEL , SHELLEY ANTHONY JOHN , MAIA–HERZOG MARILZA , DIAS ANTONIO PAULINO ANDRADE LUNA
Published: February 2019

Since the comprehensive taxonomic work on Brazilian Simuliidae by Shelley et al. (2010) we have discovered variations in characters of two species S. minusculum Lutz and S. oyapockense Floch and Abonnenc of the subgenus Psaroniocompsa. Variations in adult thoracic pattern and pupal gill configuration are described for S. minusculum and based on these a new form for the population of Chapada das Guimarães is created. The variation in pupal cocoon form from typical slipper-shaped to the rarer shoe-shaped form in the same population of S. oyapockense s.l. in Brazil confirms S. sanchezi as a junior synonym of this species. A redescription of the larva of S. minusculum is also provided.
A new Octacnemidae (Ascidiacea) from the Mid-Atlantic Ridge
Authors: MONNIOT FRANÇOISE
Published: February 2019

A new deep sea Octacnemidae (Ascidiacea, Phlebobranchia) was collected by IFREMER during the Hydrosnake cruise on the N.O. Nadir in July 1988 with the submersible Nautile. The site is located on the Mid-Atlantic ridge, in the Kane fracture zone at 2100m depth. The substratum consists of masses of fallen basalt blocks lying on black pebbles. A single specimen was attached to an easily breakable black stone with manganese particles. This ascidian represents the second specimen of the genus Myopegma Monniot & Monniot, 2003 previously known from the Pacific Ocean off New Calédonia.
On the use of high-level taxonomic names
Authors: HEDGES S. BLAIR
Published: February 2019

Asher & Helgen (2010) recently proposed some rules for naming animal taxa above the family level—names that are currently unregulated. They suggested that strict priority be used as a criterion for high-level names and that such priority be based on group content rather than the procedure used for low-level taxa, anchored to constituent taxa. Authorship of a high-level name thus may vary in a complex way depending on content. While it is true that taxonomic codes are always in need of improvement, the lack of regulation of high-level names has not caused major problems. Originality, priority, stability, and other common sense considerations usually come to play in a process that can be described as community consensus. Their proposed system would lead to less stability because names would lack both permanent anchors (e.g., types) and permanent authors, and would be based on something (group content) susceptible to change with time. Furthermore, name selection may frequently conflict with common usage, leading to confusion  and instability. An example of the problems with these rules is their preferred name for the order containing tenrecs and golden moles, Tenrecoidea, which has a long history of different meanings (content). Instead, the most commonly used name, Afrosoricida, is also preferred because it does not have that confusing history and has a more typical suffix (-a) for a mammalian order.
New species of the genus Eotetranychus (Acari, Prostigmata, Tetranychidae) from Japan
Authors: GOTOH TETSUO , ARABULI TEA
Published: February 2019

Three new species of Eotetranychus (Acari: Tetranychidae) are described and illustrated from Japan. The new species and their host plants are as follows: Eotetranychus palatiensis sp. nov. from Morus australis Poiret (Moraceae), Eotetranychus carpinicolus sp. nov. from Carpinus laxiflora (Siebold et Zuccarini) Blume and C. cordata Blume (Betulaceae), and Eotetranychus linderae sp. nov. from Lindera umbellata Thunberg (Lauraceae). A maximum likelihood tree extracted from the above-mentioned species based on the cytochrome c oxidase subunit I (COI) gene of mitochondrial DNA (mtDNA) indicated that these species are clearly separated from each other and from selected related species. A key to all Eotetranychus species known in Japan is given.
Rare and new East African leucosiid crabs
Authors: GALIL BELLA S. , INNOCENTI GIANNA
Published: February 2019

A small collection of East African leucosiid crabs, preserved in the crustacean collection at the Museo di Storia Naturale dell’Università di Firenze, Italy, was examined. Of these, one, Cryptocnemus grandidieri A. Milne-Edwards 1865, collected in 1864 by Alfred Grandidier in Zanzibar and known only from the single type specimen, is redescribed and illustrated. The others are new to science: one each are included in Leucisca MacLeay, 1838 and Nobiliella Komatsu & Takeda, 2003. These new species are described and illustrated, and their affinities with allied taxa discussed.
Resurrection of Caltoris ranrunna (Sonan) from synonymy as a skipper endemic to Taiwan based on COI barcode and morphology
Authors: HSU YU-FENG , XUE GUO-XI , LIN RUNG-JUEN , HUANG LI
Published: February 2019

Caltoris ranrunna (Sonan, 1936) is resurrected from synonymy of Caltoris cahira austeni (Moore, 1883) to represent a Caltoris species endemic to Taiwan based upon COI barcode divergence and morphological diagnosis in genitalia of both sexes. This species distributes allopatrically from C. cahira of continental Asia and Andamans.
Cranial morphology and osteology of the sexually dimorphic electric fish, Compsaraia samueli Albert & Crampton (Apteronotidae, Gymnotiformes), with comparisons to C. compsa (Mago-Leccia)
Authors: KEEFFE RACHEL , HILTON ERIC J. , DE SOUZA MÁRIO J. F. THOMÉ , FERNANDES CRISTINA COX
Published: February 2019

Sexual dimorphism of the snout has evolved independently in at least four separate clades of the gymnotiform family Apteronotidae. This phenomenon may help identify sex, except in the absence of mature individuals, and has led to confused taxonomy for several species. We examined a large collection of Compsaraia samueli collected during the breeding season from a remote stream in the Rio Negro drainage. This collection contains a wide range of sizes of both sexes, but most individuals were easily identified as mature. To quantify the sexual dimorphism of these specimens, 15 measurements were taken from the head and the body. In addition, some specimens were cleared-and-stained to study cranial osteology. We found that long-snouted males of C. samueli span a wide range of body sizes. As the snout length increases the distance between the eye and the occiput does not increase at the same rate, suggesting that it is only the anterior portion of the head that has an increased allometry. Skeletal anatomy differs between the sexes in that the lower jaw is more triangular in females and more linear in males. The coronomeckelian is small and round in females in contrast to being longer and pointed in males. There is strong interlacing of the dentary and anguloarticular bones in males, whereas this contact is not as extensive in females. We also discuss the implications of sexual dimorphism for identification of this species relative to its congener (C. compsa), and for the evolution of sexual dimorphism in the family.