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Resumo Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) é amplamente distribuído por todo o ecossistema de cerrado. Os frutos de C. brasiliense são utilizados na alimentação humana e constitui uma importante fonte de renda para muitas comunidades. A perda de habitat provocada pelas mudanças de uso da terra coloca em risco a conservação de C. brasiliense. Insetos sugadores constituem um importante fator ecológico que, potencialmente, afeta o fitness de C. brasiliense em ambientes degradados. Além disso, as metodologias de amostragem de insetos para aplicação em estudos relacionados à conservação de C. brasiliense são pouco desenvolvidas. Neste estudo, o número de insetos sugadores (Hemiptera) e seus predadores foram avaliados em três estratos verticais do dossel de C. brasiliense. A distribuição das espécies sugadoras apresentou estratificação vertical ao longo da estrutura do dossel. O estrato basal do dossel apresentou o maior número de insetos sugadores Aphis gossypii (Glover 1877) (Hemiptera: Aphididae) e Bemisia tabaci (Genn. 1889) (Hemiptera: Aleyrodidae), e seus predadores Chrysoperla sp. (Neuroptera: Chrysopidae), aranhas (Araneae) e Zelus armillatus (Lep. & Servi., 1825) (Hemiptera: Reduviidae). Os predadores distribuíram-se de acordo com a disponibilidade de recursos, ocorrendo em maior número nas partes do dossel com maior abundância de suas presas.

Abstract Caryocar brasiliense Camb. (Malpighiales: Caryocaraceae) trees are widely distributed throughout the Cerrado ecosystem. The fruits of C. brasiliense trees are used by humans for food and as the main income source in many communities. C. brasiliense conservation is seriously threatened due to habitat loss caused by the land-use change. Sucking insects constitute an important ecological driver that potentially impact C. brasiliense survival in degraded environments. In addition, insects sampling methodologies for application in studies related to the conservation of C. brasiliense are poorly developed. In this study, sucking insects (Hemiptera) and their predators were recorded in three vertical strata of Caryocar brasiliense canopies. The distribution of sucking species showed vertical stratification along the canopy structure of C. brasiliense. The basal part of the canopy had the highest numbers of sucking insects Aphis gossypii (Glover 1877) (Hemiptera: Aphididae) and Bemisia tabaci (Genn. 1889) (Hemiptera: Aleyrodidae), and their predators Chrysoperla sp. (Neuroptera: Chrysopidae), spiders (Araneae), and Zelus armillatus (Lep. & Servi., 1825) (Hemiptera: Reduviidae). Predators' distribution follows the resource availability and preferred C. brasiliense tree parts with a higher abundance of prey.

https://doi.org/10.1590/1519-6984.253598

Free-feeding organisms and galling insects (Hymenoptera) interactions on Caryocar brasiliense (Malpighiales: Caryocaraceae) trees, a savanna plant from Brazil
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Leite, G. L. D.

; Soares, M. A.

; Veloso, R. V. S.

; Silva, L. F.

; Guanabens, P. F. S.

; Munhoz, E. J. M.

; Pereira, W. R.

; Silva, R. S.

; Fernandes, G. W.

; Serrão, J. E.

; Zanuncio, J. C.

Brazilian Journal of Biology

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2024, Volume 84 elocation e257975

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Insetos galhadores são abundantes na natureza, encontrados em muitos ecossistemas globalmente, com espécies atacando plantas de importância econômica. Os efeitos de herbívoros de alimentação livre na abundância de insetos galhadores em árvores de Caryocar brasiliense (Caryocaraceae) no Cerrado brasileiro (Savana) foram estudados. A porcentagem de desfolha e o número de ácaros fitófagos ou de Hemiptera fitófagos correlacionaram-se, negativamente, com a percentagem de folhas galhadas e de adultos do parasitoide Eurytoma sp. (Hymenoptera: Eurytomidae), respectivamente. Porcentagem de folhas galhadas e o número de Eurytoma sp. adultos e ácaros fitófagos correlacionaram-se, positivamente, com o de aranhas. Os números de ácaros e fitófagos Hemiptera correlacionaram-se, positivamente, com os de joaninhas e Sycophila sp. (Hymenoptera: Eurytomidae), respectivamente. O número de adultos de Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) correlacionou-se, negativamente, com Sycophila sp. O número de Agistemus sp. (Acari: Stigmaeidae) correlacionou-se, negativa e positivamente, com os de joaninhas e ácaros fitófagos, respectivamente. Herbívoros de alimentação livre afetaram a presença de insetos galhadores (Hymenoptera) em árvores de C. brasiliense, competindo por alimento e espaço. O mesmo foi observado entre dois parasitoides de Eurytoma sp., o que pode reduzir o controle biológico natural dessa praga.

Abstract Galling insects are abundant in nature, found in many ecosystems globally, with species attacking plants of economic importance. We studied the effects of free-feeding organisms on the abundance of galling insects on Caryocar brasiliense (Caryocaraceae) trees in the Brazilian Cerrado (Savanna). Percentage of defoliation and the number of phytophagous mites or number of phytophagous Hemiptera correlated negatively with percentage of galled leaves and the parasitoid Eurytoma sp. (Hymenoptera: Eurytomidae) adults, respectively. Percentage of galled leaves and the numbers of Eurytoma sp. adults and phytophagous mites correlated positively with spiders. Numbers of mites and Hemiptera phytophagous correlated positively with those of lady beetles and Sycophila sp. (Hymenoptera: Eurytomidae), respectively. The number of Ablerus magistretti Blanchard (Hymenoptera: Aphelinidae) adults correlated negatively with Sycophila sp. The number of Agistemus sp. (Acari: Stigmaeidae) correlated, negatively and positively, with those of lady beetles and phytophagous mites, respectively. Free-feeding herbivores affected the presence of galling insects (Hymenoptera) on C. brasiliense trees, competing for food and space. The same was observed between two parasitoids of Eurytoma sp. galling insect, which can reduce the natural biological control of this pest.

https://doi.org/10.1590/1519-6984.257975

First record and economic losses of the passionflower caterpillar in two biomes from Brazil
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Soares, W. S.

; Oliveira, M. M. F.

; Botrel, G. B. B.

; Rocha, E. A. A.

; Silva, M. M de J.

; da Silva, B. K. R.

; Pereira, R. C.

; Alves, F. M.

; Gonçalves, V. A. R.

; Fernandes, F. L.

Brazilian Journal of Biology

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2023, Volume 83 elocation e246475

Abstract: En | Text: En | PDF: En

https://doi.org/10.1590/1519-6984.246475 268 downloads

Influence of essential oils on the quality of Vigna unguiculata L. (Walp.) seeds compared by traditional method, image and multivariate analysis L Walp. Walp (Walp. method (Walp
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Silva, A. V. da

; Silva, C. M. da

; Azevedo, M. C. de

; Silva, J. H. B. da

; Nóbrega, J. S.

; Fátima, R. T. de

; Ferreira, J. T. A

; Pereira, W. E.

; Mielezrski, F.

Brazilian Journal of Biology

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2023, Volume 83 elocation e272616

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Os extratos de plantas medicinais são utilizados para o tratamento de sementes com o objetivo de diminuir a ação de fitopatógenos e aumentar o vigor das sementes. Atualmente, a análise computadorizada de imagens tem sido utilizada para avaliar a qualidade fisiológica de lotes de sementes. O objetivo foi avaliar a qualidade fisiológica de sementes de feijão-caupi tratadas com óleos essenciais, comparado com teste tradicional, análise imagem e a análise de componentes principais. Foram analisadas duas cultivares de feijão-caupi, BRS Tumucumaque e BRS Guariba, tratadas com doses de extratos naturais de alfavaca, alho, cavalinha, citronela e ácido pirolenhoso. O método tradicional consistiu em avaliações de germinação, primeira contagem de germinação, emergência de plântulas, índice de velocidade de emergência, envelhecimento acelerado, matéria fresca e matéria seca da plântula e a análise de imagem para: comprimento da plântula, índice de crescimento, índice de uniformidade, índice de vigor e germinação. Uma análise de componentes principais foi aplicada para reduzir o número de variáveis. Os extratos de cavalinha, alfavaca e citronela foram eficientes em aumentar a qualidade fisiológica das sementes de pelo menos uma cultivar. O software Vigor-S® mostrou-se eficiente em relação aos testes tradicionais para avaliação da qualidade fisiológica de sementes. A Análise de Componentes Principais é uma aliada para identificar os melhores extratos e doses a serem utilizados. O método de análise de imagens mostrou-se eficaz quando comparado ao método tradicional, podendo, portanto, ser utilizado. Atualmente feijãocaupi feijão caupi essenciais feijãocaupi, caupi, Guariba alho cavalinha pirolenhoso germinação plântulas acelerado crescimento uniformidade variáveis cultivar VigorS® VigorS Vigor S® S Vigor-S mostrouse mostrou se podendo portanto utilizado

Abstract The extracts of medicinal plants are used for the treatment of seeds in order to reduce the action of phytopathogens and increase the vigor of the seeds. Currently, computerized image analysis has been used to assess the physiological quality of seed lots. The objective was to evaluate the efficiency of the Vigor-S® software in the evaluation of the physiological quality of cowpea seeds treated with essential oils, comparing with a traditional test and the principal component analysis. Two cowpea cultivars were analyzed, BRS Tumucumaque and BRS Guariba, treated with doses of natural extracts of Alfavaca, garlic, horsetail, citronella and pyroligneous acid. The traditional method consisted of evaluations for germination, first germination count, seedling emergence, emergence speed index, accelerated aging, fresh matter and dry matter of seedling and the image analysis for: seedling length, growth index, uniformity index, vigor index, and germination. A Principal component analysis was applied to reduce the number of variables. Horsetail, Alfavaca and citronella extracts were efficient in increasing the physiological quality of the seeds of at least one cultivar. The Vigor-S® software proved to be efficient compared to traditional tests to assess the physiological quality of seeds. Principal Component Analysis is an ally to identify the best extracts and doses to be used. The image analysis method proved to be effective when compared to the traditional method and can therefore be used. Currently lots VigorS® VigorS Vigor S® S Vigor-S oils analyzed Guariba garlic horsetail acid count index aging length variables Horsetail cultivar

https://doi.org/10.1590/1519-6984.272616

Changes in galling insect community on Caryocar brasiliense trees mediated by soil chemical and physical attributes
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Leite, G. L. D.

; Veloso, R. V. S.

; Soares, M. A.

; Silva, L. F.

; Guanãbens, P. F. S.

; Munhoz, E. J. M.

; Pereira, W. R.

; Silva, R. S.

; Fernandes, G. W.

; Zanuncio, J. C.

Brazilian Journal of Biology

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2022, Volume 82 elocation e261227

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo A hipótese de estresse nutricional prevê que insetos galhadores prevalecem em plantas hospedeiras que crescem em habitats com solos de baixa qualidade nutricional. Caryocar brasiliense (Caryocaraceae) é hospedeiro de quatro diferentes espécies de insetos galhadores. Estes insetos têm potencial para afetar a produção dos frutos de C. brasiliense, uma importante fonte de renda para muitas comunidades no Brasil. Neste trabalho, estudamos os efeitos das características físicas e químicas do solo sobre a abundância, riqueza e diversidade de espécies de insetos galhadores e seus inimigos naturais. O estudo foi realizado em plantas de C. brasiliense em três diferentes condições de solo. Nossos dados corroboram a hipótese de que, em solos nutricionalmente pobres (por exemplo, menor teor de fósforo) e de texturas físicas piores (por exemplo, arenoso) as plantas hospedeiras suportam maior riqueza e diversidade de espécies de insetos galhadores. No entanto, a abundância de Eurytoma sp. (galhador mais comum em C. brasiliense), foi correlacionada com maior concentração de fósforo no solo (melhor condição nutricional). A porcentagem de folíolos da planta hospedeira galhada e a área de folíolos ocupada por galhas de Eurytoma sp foi maior no solo mais fértil. Neste solo, houve maior abundância, riqueza de espécies e diversidade de parasitóides de Eurytoma sp. (por exemplo, Sycophila sp.) e predadores (por exemplo, Zelus armillatus). Nossos dados indicam a importância da qualidade do habitat na composição da comunidade de insetos galhadores e o impacto das propriedades do solo na mediação da distribuição desses insetos em C. brasiliense.

Abstract The nutrient stress hypothesis predicts that galling insects prevail on host plants growing in habitats with soils of low nutritional quality. Caryocar brasiliense (Caryocaraceae) is host to four different leaf-galling insects. These insects have the potential to cause a reduction in the production of C. brasiliense fruits, an important source of income for many communities in Brazil. We studied the effects of soil physical and chemical characteristics on the abundance, species richness, and diversity of galling insects and their natural enemies on C. brasiliense trees growing under three different soil conditions. Our data corroborate the hypothesis that in nutritionally poor (e.g., lower phosphorus content) and worse physical textures (e.g., sandy) soils, host plants support higher species richness and diversity of galling insects. However, the abundance of Eurytoma sp. (the most common gall in C. brasiliense), was correlated with a higher phosphorus concentration in the soil (better nutritional condition). The percentage of galled leaflets and the area of leaflets occupied by Eurytoma sp galls were higher in the more fertile soil. In this soil, there was greater abundance, species richness, and diversity of parasitoids of Eurytoma sp. (e.g., Sycophila sp.) and predators (e.g., Zelus armillatus). Our data indicate the importance of habitat quality in the composition of the galling insect community and the impact of soil properties in mediating the distribution of these insects in C. brasiliense.

https://doi.org/10.1590/1519-6984.261227

Methods of application of salicylic acid as attenuator of salt stress in cherry tomato
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Silva, A. A. R.

; Lima, G. S.

; Azevedo, C. A. V.

; Veloso, L. L. S. A.

; Lacerda, C. N.

; Gheyi, H. R.

; Pereira, W. E.

; Silva, V. R.

; Soares, L. A. A.

Brazilian Journal of Biology

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2022, Volume 82 elocation e265069

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O estresse salino ocasionado pelo excesso de sais presentes na água de irrigação, é um dos maiores entraves para a produção agrícola, sobretudo em regiões semiáridas. Assim, a utilização de substâncias, como o ácido salicílico, que minimizem os efeitos deletérios da salinidade sobre as plantas pode ser uma alternativa para garantir uma produção satisfatória. Neste contexto, objetivou-se com este trabalho avaliar os efeitos de diferentes métodos de aplicação de ácido salicílico sobre o crescimento, a produção e a eficiência do uso da água de plantas de tomate cereja sob estresse salino. O estudo foi conduzido em casa de vegetação, utilizando-se de um solo Entisol de textura franco-arenosa. Os tratamentos foram distribuídos em delineamento inteiramente casualizados, em arranjo fatorial 2×4, sendo duas condutividades elétricas da água de irrigação - CEa (0,6 e 2,6 dS m-1) e quatro métodos de aplicação de ácido salicílico (Testemunha - sem aplicação de AS; via pulverização; via irrigação e pulverização e irrigação), com cinco repetições e uma planta por parcela. A concentração de ácido salicílico utilizada nos diferentes métodos foi de 1,0 mM. A aplicação de ácido salicílico via pulverização foliar, aumentou o crescimento, a produção de plantas de tomate cereja, e a eficiência do uso da água. O estresse salino induzido pela condutividade elétrica de 2,6 dS m-1 foi amenizado pela aplicação foliar de ácido salicílico. O uso de água de 2,6 dS m-1 associado a aplicação de ácido salicílico via lâmina de irrigação, intensificou os efeitos adversos da salinidade nas plantas de tomate cereja.

Abstract Salt stress caused by excess salts present in irrigation water, is one of the biggest barriers in agricultural production, especially in semi-arid regions. Thus, the use of substances, such as salicylic acid, that minimize the deleterious effects of salinity on plants can be an alternative to ensure satisfactory production. In this context, the objective of this study was to evaluate the effects of different methods of application of salicylic acid on the growth, production and water use efficiency of cherry tomato plants under salt stress. The study was conducted in a greenhouse, using an Entisol soil with a sandy loam texture. The treatments were distributed in a completely randomized design, in a 2×4 factorial arrangement, corresponding to two levels of electrical conductivity of irrigation water - ECw (0.6 and 2.6 dS m-1) and four methods of application of salicylic acid (Control - without application of SA; via spraying; via irrigation and via spraying and irrigation), with five replicates and one plant per plot. The salicylic acid concentration used in the different methods was 1.0 mM. Application of salicylic acid via foliar spraying increased the growth, production and water use efficiency of cherry tomato plants. The salt stress induced by the electrical conductivity of 2.6 dS m-1 was attenuated by the foliar application of salicylic acid. The use of water of 2.6 dS m-1 associated with the application of salicylic acid via irrigation water further intensified the adverse effects of salinity on cherry tomato plants.

https://doi.org/10.1590/1519-6984.265069

Analysis of Carbides in Multi-component Cast Iron Design Based on High Entropy Alloys Concepts
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Pasini, W. M.

; Bellé, M. R.

; Pereira, L.

; do Amaral, R.F.

; Barcellos, V. K. de

Materials Research

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2021, Volume 24 N. 2 elocation e20200398

Abstract: En | Text: En | PDF: En

Abstract Nowadays, the concept of high entropy alloys (HEAs) has expanded the limits of metallurgy and high-quality metallurgical HEAs ingots have already been successfully obtained on an industrial scale. High Chromium Cast Irons (HCCI) and Multi-Component Cast Irons (MCCI) are known to be a useful material for applications when abrasion resistance is required. Inspired by the concepts of high-entropy alloys, a base HCCI was modified, by adding other carbide-forming elements, at concentrations higher than what is currently used, in order to develop a new class of white cast iron, High Entropy White Cast Iron (HEWCI). The characterization of carbides precipitated during the HEWCI solidification was performed by scanning electron microscopy, energy dispersive spectroscopy, electron backscattered diffraction (SEM/EDS/EBSD) and X-ray diffraction (XRD). With the characterization techniques employed, the as-cast microstructure obtained of HEWCI is composed of approximately 50% of austenite matrix and 50% of different types of carbides, MC, M7C3 and M2C carbides.

https://doi.org/10.1590/1980-5373-mr-2020-0398 436 downloads

Chlorophyll treatment combined with photostimulation increases glycolysis and decreases oxidative stress in the liver of type 1 diabetic rats
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Wunderlich, A.L.M.

; Azevedo, S.C.S.F.

; Yamada, L.A.

; Bataglini, C.

; Previate, C.

; Campanholi, K.S.S.

; Pereira, P.C.S.

; Caetano, W.

; Kaplum, V.

; Nakamura, C.V.

; Nakanishi, A.B.S.

; Comar, J.F.

; Pedrosa, M.M.D.

; Godoi, V.A.F.

Brazilian Journal of Medical and Biological Research

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jan 2020, Volume 53 N. 1 elocation e8389

Abstract: En | Text: En | PDF: En

Photodynamic therapy (PDT) promotes cell death, and it has been successfully employed as a treatment resource for neuropathic complications of diabetes mellitus (T1DM) and hepatocellular carcinoma. The liver is the major organ involved in the regulation of energy homeostasis, and in pathological conditions such as T1DM, changes in liver metabolic pathways result in hyperglycemia, which is associated with multiple organic dysfunctions. In this context, it has been suggested that chlorophyll-a and its derivatives have anti-diabetic actions, such as reducing hyperglycemia, hyperinsulinemia, and hypertriglyceridemia, but these effects have not yet been proven. Thus, the biological action of PDT with chlorophyll-a on hepatic parameters related to energy metabolism and oxidative stress in T1DM Wistar rats was investigated. Evaluation of the acute effects of this pigment was performed by incubation of isolated hepatocytes with chlorophyll-a and the chronic effects were evaluated by oral treatment with chlorophyll-based extract, with post-analysis of the intact liver by in situ perfusion. In both experimental protocols, chlorophyll-a decreased hepatic glucose release and glycogenolysis rate and stimulated the glycolytic pathway in DM/PDT. In addition, there was a reduction in hepatic oxidative stress, noticeable by decreased lipoperoxidation, reactive oxygen species, and carbonylated proteins in livers of chlorophyll-treated T1DM rats. These are indicators of the potential capacity of chlorophyll-a in improving the status of the diabetic liver.

https://doi.org/10.1590/1414-431x20198389 1264 downloads

Migraine in 746 patients with multiple sclerosis
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Fragoso, Yara Dadalti

; Adoni, Tarso

; Alves-Leon, Soniza V.

; Apostolos-Pereira, Samira L.

; Carneiro, Marcos A. Diniz

; Chikota, Edila M.

; Diniz, Denise Sisterolli

; Eboni, Audred C. B.

; Gomes, Sidney

; Gonçalves, Marcus Vinicius M.

; Goncalves, Ricardo Pereira

; Inojosa, José Luiz

; Junqueira, Thiago F.

; Machado, Suzana Costa

; Malfetano, Fabiola Rachid

; Mansur, Letícia Fezer

; Mendes, Maria Fernanda

; Muniz, Andre

; Nobrega Junior, Adaucto W.

; Olival, Guilherme Sciascia do

; Parolin, Monica Fiuza

; Pimentel, Maria Lucia V.

; Rocha, Cristiane Franklin

; Ruocco, Heloisa Helena

; Santos, Gutemberg C.

; Siquineli, Fabio

; Soares, José Otavio D.

; Sousa, Nise Alessandra C.

; Tauil, Carlos Bernardo

; Winckler, Thereza Cristina A.

Arquivos de Neuro-Psiquiatria

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sep 2019, Volume 77 N. 9 Pages 617 - 621

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Enxaqueca piora o sofrimento do paciente que tem esclerose múltipla (EM). ID-migraine é uma ferramenta útil para seleção de pacientes com enxaqueca e Migraine Disability Assessment (MIDAS) é um questionário que avalia o impacto da doença. O objetivo do presente estudo foi avaliar a presença e impacto de enxaqueca em pacientes com EM. Métodos: Pacientes diagnosticados com EM e tratados em clínicas especializadas foram convidados a responder um questionário online se também apresentassem cefaleia. Resultados: O estudo incluiu 746 participantes com cefaleia e EM que preencheram completamente as respostas. Foram 625 mulheres e 121 homens, sendo 69% dos pacientes com idade entre 20 e 40 anos. Enxaqueca foi identificada em 404 pacientes (54,1%) e moderado a grave impacto da doença foi observado em 68,3% dos casos. Conclusão: Enxaqueca é uma cefaleia primária frequente e incapacitante relatada por pacientes com EM.

ABSTRACT Migraine adds to the burden of patients suffering from multiple sclerosis (MS). The ID-migraine is a useful tool for screening migraine, and the Migraine Disability Assessment questionnaire can evaluate disease burden. The aim of the present study was to assess the presence and burden of migraine in patients with MS. Methods: Patients diagnosed with MS attending specialized MS units were invited to answer an online survey if they also experienced headache. Results: The study included 746 complete responses from patients with MS and headache. There were 625 women and 121 men, and 69% of all the patients were aged between 20 and 40 years. Migraine was identified in 404 patients (54.1%) and a moderate-to-high burden of disease was observed in 68.3% of the patients. Conclusion: Migraine is a frequent and disabling type of primary headache reported by patients with MS.

https://doi.org/10.1590/0004-282x20190100 1666 downloads

10.

ERGONOMIC AND SAFETY CONDITIONS ASSESSMENT OF TRACTORS USED BY SMALLHOLDERS ACCORDING TO BRAZILIAN LEGISLATION AND CURRENT STANDARDS
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Reis, Ângelo V. dos

; Pereira, Aline S.

; Ferreira, Mauro F.

; Mackmill, Laurett de Brum

; Timm, Márcio W.

Engenharia Agrícola

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jun 2019, Volume 39 N. 3 Pages 391 - 399

Abstract: En | Text: En | PDF: En

ABSTRACT This article aimed to select items with which to evaluate the ergonomic and safety conditions in tractors used by smallholders and family farmers, based on standardization research and legislation for the sector. Brazil has a comprehensive set of technical standards and legislation for the agricultural machinery sector intended to guarantee product standardization and to promote the health and safety of the users. Therefore, the initial step of this research was to review the technical norms and legislation for the product in order to develop instruments to assess their ergonomic and safety conditions. Twenty-eight Brazilian Technical Standards (NBR) and four Regulatory Norms (NRs) were investigated, in addition to CONTRAN (the Brazilian Traffic Council) Resolution No. 227/2007, which establishes requirements for vehicle lighting and signaling systems, generating 57 safety evaluation items and 35 ergonomic items. These evaluating items were applied to six tractor models commonly sold to smallholders with a rated engine power of 37–57kW. The results indicate levels of safety unconformities as high as 39.7% for the worst case and 44.7% ergonomic-related problems for the same tractor model. These data point to the need for improvements, especially in lower power tractors.

https://doi.org/10.1590/1809-4430-eng.agric.v39n3p391-399/2019 1315 downloads

11.

Peripheral odontogenic fibroma in the mandibular gingiva: case report
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de-Sena, Luana Samara B.

; Miguel, Márcia Cristina C.

; Pereira, Jozinete V.

; Gomes, Daliana Q. C.

; Alves, Pollianna M.

; Nonaka, Cassiano Francisco W.

Jornal Brasileiro de Patologia e Medicina Laboratorial

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apr 2019, Volume 55 N. 2 Pages 192 - 201

Abstract: Pt En Es | Text: Pt En Es | PDF: Pt | PDF: En | PDF: Es

RESUMO Fibroma odontogênico periférico (FOP) é uma neoplasia benigna rara, de origem mesenquimal odontogênica, representando aproximadamente 4,7% de todos os tumores odontogênicos. Este artigo relata o caso de uma mulher de 29 anos de idade que se apresentou com um nódulo avermelhado, indolor, na gengiva mandibular vestibular direita, entre o segundo pré-molar e o primeiro molar. O exame radiográfico revelou uma pequena perda óssea na região da crista alveolar. A análise microscópica evidenciou um tumor composto de tecido conjuntivo fibroso celularizado, entremeado por conspícuas ilhas e cordões de epitélio odontogênico aparentemente inativo. O diagnóstico final foi de FOP. Nenhum sinal clínico de recorrência foi observado 22 meses após a excisão cirúrgica. O FOP pode ser clinicamente confundido com outras lesões gengivais comuns, como granuloma piogênico, lesão periférica de células gigantes e fibroma ossificante periférico. A excisão local conservadora tem sido sugerida como tratamento de escolha para o FOP. No entanto, tendo em vista a escassez de informações sobre o comportamento biológico e a taxa de recorrência desse tumor, o acompanhamento dos pacientes a longo prazo é mandatório.

ABSTRACT Peripheral odontogenic fibroma (POF) is a rare benign neoplasm of odontogenic mesenchymal origin that accounts for approximately 4.7% of all odontogenic tumors. This article reports the case of a 29-year-old woman who presented with a painless, reddish mass in the right vestibular mandibular gingiva between the second premolar and the first molar. Radiographic examination revealed small crestal bone loss in the region. Microscopic analysis revealed a tumor composed of cellular fibroblastic connective tissue intermingled with conspicuous islands and strands of apparently inactive odontogenic epithelium. The final diagnosis was POF. No clinical signs of recurrence were observed 22 months after surgical excision. POF may be clinically mistaken for other common gingival lesions, such as pyogenic granuloma, peripheral giant cell lesion, and peripheral ossifying fibroma. Conservative local excision has been suggested as the treatment of choice for POF. However, in view of the paucity of information on the biological behavior and recurrence rate of this tumor, long-term follow-up of patients is mandatory.

RESUMEN El fibroma odontogénico periférico (FOP) es una neoplasia benigna rara de origen mesenquimatosa dental, que representa aproximadamente el 4,7% de todos los tumores odontogénicos. Este reporte describe el caso de una mujer de 29 años de edad que se presentó con un nódulo rojizo indoloro en la encía mandibular vestibular derecha, entre el segundo premolar y el primer molar. El examen radiográfico reveló una pequeña pérdida de tejido óseo en la región de la cresta alveolar. El análisis microscópico mostró un tumor compuesto de tejido conjuntivo fibroso celular entremezclado con visibles islotes y filamentos de epitelio odontógeno aparentemente inactivo. El diagnóstico final fue FOP. No se observó recurrencia de la lesión después de 22 meses de la cirugía. El FOP puede ser clínicamente confundido con otras lesiones gingivales comunes, como granuloma piogénico, lesión periférica de células gigantes y fibroma osificante periférico. Escisión local conservadora ha sido recomendada como tratamiento de elección para FOP. Sin embargo, teniendo en cuenta la escasez de informaciones sobre el comportamiento biológico y la tasa de recidiva de este tumor, el seguimiento a largo plazo de los pacientes es fundamental.

https://doi.org/10.5935/1676-2444.20190015 12744 downloads

12.

Structural analysis of a fragmented area in Minas Gerais State, Brazil
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SALOMÃO, NATÁLIA V.

; MACHADO, EVANDRO L.M.

; PEREIRA, RAFAELLA S.

; FERNANDES, GERALDO W.

; GONZAGA, ANNE P.D.

; MUCIDA, DANIELLE P.

; SILVA, LEOVANDES S. DA

Anais da Academia Brasileira de Ciências

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dec 2018, Volume 90 N. 4 Pages 3353 - 3361

Abstract: En | Text: En | PDF: En

Abstract The theory of landscape ecology applied to the methods of spatial analysis helps to understand changes in the structure of forest remnants. In view of this theory, the objective of the present study was to analyze the structure of a fragmented area between the years 1979 and 2015 through calculation of landscape metrics for arboreal, shrubby and herbaceous vegetation classes. Vegetation classes were classified with visits to the field, interpretation of aerial photographs from 1979 and supervised classification of Landsat 8 from 2015. The metrics calculated for each class were area and total number of fragments, total edge and average connectivity among the fragments. The analysis of structure found that it changed negatively due to an increase in the number of small fragments, which increased the intensity of edge effects and reduced connectivity between fragments for all classes.

https://doi.org/10.1590/0001-3765201820160828 849 downloads

13.

Diffuse alveolar hemorrhage in childhoodonset systemic lupus erythematosus: a severe disease flare with serious outcome
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Blay, Gabriela

; Rodrigues, Joaquim C.

; Ferreira, Juliana C. O.

; Leal, Gabriela N.

; Gormezano, Natali W.

; Novak, Glaucia V.

; Pereira, Rosa M. R.

; Terreri, Maria T.

; Magalhães, Claudia S.

; Molinari, Beatriz C.

; Sakamoto, Ana P.

; Aikawa, Nadia E.

; Campos, Lucia M. A.

; Fernandes, Taciana A. P.

; Clemente, Gleice

; Peracchi, Octavio A. B.

; Bugni, Vanessa

; Marini, Roberto

; Sacchetti, Silvana B.

; Carvalho, Luciana M.

; Fraga, Melissa M.

; Castro, Tânia C. M.

; Ramos, Valéria C.

; Bonfá, Eloisa

; Silva, Clovis A.

Advances in Rheumatology

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2018, Volume 58 elocation 39

Abstract: En | Text: En | PDF: En

Abstract Objective: To evaluate prevalence, clinical manifestations, laboratory abnormalities and treatment in a multicenter cohort study including 847 childhood-onset systemic lupus erythematosus (cSLE) patients with and without diffuse alveolar hemorrhage (DAH), as well as concomitant parameters of severity. Methods: DAH was defined as the presence of at least three respiratory symptoms/signs associated with diffuse interstitial/alveolar infiltrates on chest x-ray or high-resolution computer tomography and sudden drop in hemoglobin levels. Statistical analysis was performed using Bonferroni correction (p < 0.0022). Results: DAH was observed in 19/847 (2.2%) cSLE patients. Cough/dyspnea/tachycardia/hypoxemia occurred in all cSLE patients with DAH. Concomitant parameters of severity observed were: mechanical ventilation in 14/19 (74%), hemoptysis 12/19 (63%), macrophage activation syndrome 2/19 (10%) and death 9/19 (47%). Further analysis of cSLE patients at DAH diagnosis compared to 76 cSLE control patients without DAH with same disease duration [3 (1–151) vs. 4 (1–151) months, p = 0.335], showed higher frequencies of constitutional involvement (74% vs. 10%, p < 0.0001), serositis (63% vs. 6%, p < 0.0001) and sepsis (53% vs. 9%, p < 0.0001) in the DAH group. The median of disease activity score(SLEDAI-2 K) was significantly higher in cSLE patients with DAH [18 (5–40) vs. 6 (0–44), p < 0.0001]. The frequencies of thrombocytopenia (53% vs. 12%, p < 0.0001), intravenous methylprednisolone (95% vs. 16%, p < 0.0001) and intravenous cyclophosphamide (47% vs. 8%, p < 0.0001) were also significantly higher in DAH patients. Conclusions: This was the first study to demonstrate that DAH, although not a disease activity score descriptor, occurred in the context of significant moderate/severe cSLE flare. Importantly, we identified that this condition was associated with serious disease flare complicated by sepsis with high mortality rate.

https://doi.org/10.1186/s42358-018-0038-4 467 downloads

14.

Nematodes associated with Iguana iguana (Linnaeus, 1758) (Squamata, Iguanidae) in Semi-arid areas of Northeastern Brazil
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Teles, D. A.

; Brito, S. V.

; Teixeira, A. A. M.

; Ribeiro, S. C.

; Araujo-Filho, J. A.

; Lima, V. F.

; Pereira, A. M. A.

; Almeida, W. O.

Brazilian Journal of Biology

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jul 2017, Volume 77 N. 3 Pages 514 - 518

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Foram analisados os nematóides em Iguana iguana, um grande lagarto Iguanidae que possui ampla distribuição pelas Américas. Os objetivos do estudo foram investigar os helmintos associados ao lagarto I. iguana e seus índices parasitológicos (prevalência e intensidade média de infecção). Foram examinados 18 espécimes (oito machos e 10 fêmeas). A prevalência total foi de 66,6% (12/18), nos machos foi de 75% (6/8) e nas fêmeas 60% (6/10). Iguana iguana foi identificado como um novo hospedeiro para Physaloptera sp., Atractis sp., Piratuba sp., e Subulura sp. Este registro contribui para o conhecimento da diversidade de helmintos associados a este hospedeiro.

Abstract Nematodes were analyzed in Iguana iguana, a large lizard Iguanidae that is widely distributed throughout the Americas. The aims of the study were investigate the helminths associated with the lizard, I. iguana in semi-arid areas of northeastern Brazil and analyze the parasitological indices (prevalence, and mean intensity of infection). A total of 18 specimens of I. iguana were examined (8 males and 10 females). The overall prevalence of infection was 66.6% (12/18), while in males, it was 75% (6/8) and in females, 60% (6/10). Iguana iguana was identified as a new host for Physaloptera sp., Atractis sp., Piratuba sp. and Subulura sp. This registered contributes to the knowledge of helminth diversity associated with this host.

https://doi.org/10.1590/1519-6984.17615 1499 downloads

15.

Helminths of the Lizard Salvator merianae (Squamata, Teiidae) in the Caatinga, Northeastern Brazil
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Teixeira, A. A. M.

; Brito, S. V.

; Teles, D. A.

; Ribeiro, S. C.

; Araujo-Filho, J. A.

; Lima, V. F.

; Pereira, A. M. A.

; Almeida, W. O.

Brazilian Journal of Biology

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jun 2017, Volume 77 N. 2 Pages 312 - 317

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O lagarto Salvator merianae é uma espécie bem distribuída na América do Sul, ocorrendo do sul da Amazônia até o leste dos Andes e norte da Patagônia. Estudos com a fauna parasitária desse lagarto revelaram que ele hospeda helmintos em vários biomas brasileiros. O presente trabalho fornece novo dado parasitológico sobre nematoda gastrointestinal associado ao lagarto S. merianae. Dezesseis amostras foram analisadas a partir de nove localidades diferentes na região semiárida do nordeste do Brasil. Foram identificadas cinco espécies de nematóide. Oswaldofilaria petersi foi registrado pela primeira vez parasitando S. merianae, aumentando assim o conhecimento da fauna de parasitas que infectam grandes lagartos neotropicais.

Abstract The lizard Salvator merianae is a widely distributed species in South America, occurring from southern Amazonia to the eastern Andes and northern Patagonia. Studies on the parasitic fauna of this lizard have revealed that it is a host for helminths in various Brazilian biomes. The present work provides new parasitological data on the gastrointestinal nematodes associated with the lizard S. merianae. Sixteen specimens were analyzed from nine different locations in a semi-arid region in northeastern Brazil. Five species of nematodes were identified. Oswaldofilaria petersi was first recorded as a parasite of the S. merianae, thus increasing the knowledge of the fauna of parasites that infect large Neotropical lizards.

https://doi.org/10.1590/1519-6984.13515 1244 downloads

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