2,807 research outputs found

    Ultrastructure of the body cuticle of Atalodera gibbosa Souza & Huang, 1994 (Tylenchida : Heteroderinae)

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    L'ultrastructure de la cuticule d'#Atalodera gibbosa$ Souza & Huang, 1994 est décrite. La cuticule est composée des couches A, B, C et D qui peuvent être subdivisées en couches supplémentaires désignées par des sous-exposants. Les couches A1, A2 et A3 sont semblables à celles des autres Heteroderidae. Une nouvelle couche - A4 - signalée chez les juvéniles de deuxième stade (J2). La couche B est normale chez les J2 et les mâles, alors que chez les femelles, elle est caractérisée par une disposition particulière de fibres parallèles - par rapport à la surface de la cuticule - et de fibres radiales. Les troisième et quatrième stades juvéniles présentent une couche C structurée et une couche D néo-formée. Les jeunes femelles possèdent une couche D normale, mais chez les femelles matures existe une couche supplémentaire, D2, rapportée ici pour la première fois, et formée de fibres paraboliques disposées en deux strates minces. (Résumé d'auteur

    Aplicação De Gesso E Vinhaça: Atributos Químicos Do Solo, Produtividade E Estado Nutricional Da Alfafa

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    The objective of this work was to evaluate the effects of the application of phosphogypsum and vinasse on soil chemical properties and productivity and nutritional characteristics of alfalfa (Medicago sativa). The experiment was conducted in a randomized block design, using a 3×5 factorial arrangement, with three vinasse rates (0, 150 and 300 m3 ha-1) and five phosphogypsum rates (0, 3, 6, 9 and 12 Mg ha-1). The alfalfa chemical composition and shoot dry matter (SDW) and soil chemical properties (in the layers 0.0-0.2 and 0.21-0.4 m) were evaluated. The vinasse rates increased the soil potassium contents, while the phosphogypsum rates promoted linear increases in soil calcium and sulfur contents. The base saturation was increased and the magnesium content showed a quadratic response on the layer 0.21-0.4 m with the increase in phosphogypsum rates. The calcium, magnesium and phosphorus contents in the alfalfa leaves were lower with vinasse application. The phosphogypsum rates promoted linear increases in alfalfa SDW. Vinasse rated 150 m3 ha-1 was been enough to SDW increase. Calcium and magnesium contents in the leaves fitted a quadratic model, with maximum calcium content in the phosphogypsum rate of 9.5 Mg ha-1 and the minimum magnesium content in the phosphogypsum rate of 8.7 Mg ha-1. The leaf sulfur contents in all vinasse rates and leaf potassium contents in the highest vinasse rate showed maximum accumulation at near 9 Mg ha-1 of phosphogypsum. © 2017, Universidade Federal Rural do Semi-Arid. All Rights Reserved.30121321

    Produção de sementes de guandu.

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    Yield, nutritional status and soil chemical properties as response to cattle manure, reactive natural rock phosphate and biotite schist in Massai grass.

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    In animal production, grasses planted in the pasture lands have especial value to improve aggregate value of products. This paper evaluates the effects of applying cattle manure, reactive natural phosphate and biotite schist on soil fertility, yield and nutritional content of Megathyrsus spp. cv. Massai. The experiment was conducted under field conditions, in a dystroferric Red Latosol (Oxisol). The experimental design was randomized blocks with the treatments confounding, with one replicate. The treatments consisted of three rates of natural reactive rock phosphate from Algeria - Djebel-Onk (0, 100 and 200 kg ha-1 of P2O5), three biotite schist rates (0, 150 and 300 kg ha-1 of K2O) and three cattle manure rates (0, 20 and 40 Mg ha-1). The application of reactive natural rock phosphate increased dry matter yield (DMY), however, this effect was not observed for cattle manure and biotite schist. The foliar contents of N, K and Mg (cattle manure), P and B (natural rock phosphate) and K (biotite schist) were significantly influenced by the treatments. The same effect was found forP levels in soil, dry matter of the aerial part, Mg and B content in the dry matter

    Production, nutritional status and chemical properties of soils with addition of cattle manure, reactive natural phosphate and biotite schist in Massai cultivar.

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    The objective of this work was to evaluate the effects of cattle manure, reactive natural phosphate and biotite schist on the soil fertility, yield and nutritional status of Megathyrsus spp. cv. Massai. The experiment was conducted under field conditions, in a dystrophic Red Yellow Latosol (Oxisol). It was used a randomized block experimental design with the following treatments: three natural reactive rock phosphate from Algeria (Djebel-Onk) doses (0, 100 and 200 kg ha-1 of P2O5), three biotite schist doses (0, 150 and 300 kg ha-1 of K2O) and three cattle manure doses (0, 20 and 40 t ha-1). The application of natural phosphate increased dry matter yield, however, application of cattle manure and biotite schist did not influence this variable. Foliar levels of nitrogen, potassium and magnesium (cattle manure), phosphorous and boron (natural rock phosphate) and potassium (biotite schist) were influenced by the applied fertilizer doses. Only the levels of phosphorous in the soil and in the plant and levels of magnesium and boron in the plant show interaction with dry matter yield of Massai cultivar

    An integrated approach for mixture analysis using MS and NMR techniques

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    The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link.We suggest an improved software pipeline for mixture analysis. The improvements include combining tandem MS and 2D NMR data for a reliable identification of its constituents in an algorithm based on network analysis aiming for a robust and reliable identification routine. An important part of this pipeline is the use of open-data repositories, although it is not totally reliant on them. The NMR identification step emphasizes robustness and is less sensitive towards changes in data acquisition and processing than existing methods. The process starts with a LC-ESI-MSMS based molecular network dereplication using data from the GNPS collaborative collection. We identify closely related structures by propagating structure elucidation through edges in the network. Those identified compounds are added on top of a candidate list for the following NMR filtering method that predicts HSQC and HMBC NMR data. The similarity of the predicted spectra of the set of closely related structures to the measured spectra of the mixture sample is taken as one indication of the most likely candidates for its compounds. The other indication is the match of the spectra to clusters built by a network analysis from the spectra of the mixture. The sensitivity gap between NMR and MS is anticipated and it will be reflected naturally by the eventual identification of fewer compounds, but with a higher confidence level, after the NMR analysis step. The contributions of the paper are an algorithm combining MS and NMR spectroscopy and a robust nJCH network analysis to explore the complementary aspect of both techniques. This delivers good results even if a perfect computational separation of the compounds in the mixture is not possible. All the scripts will be made available online for users to aid studies such as with plants, marine organisms, and microorganism natural product chemistry and metabolomics as those are the driving force for this project

    Fine-needle Aspiration Biopsy For Breast Lesions: A Comparison Between Two Devices For Obtaining Cytological Samples

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    Context and Objective: Fine-needle aspiration biopsy has been accepted worldwide for breast lesions. However, some questions remain, including the appropriateness of the puncture method. The objective of this work was to compare aspirates obtained by the auto-vacuum device and by the syringe pistol holder. Design and Setting: Randomized trial for validation of diagnostic method, at Hospital das Clinicas do Universidade Federal de Goiás and Hospital Araújo Jorge, Goiânio. Methods: 351 patients presenting breast lumps underwent fine-needle aspiration biopsy, either with the auto-vacuum device or the syringe pistol holder. A single cytopathologist analyzed all of the cytology slides. The rates of insufficient material, cellularity, cell distortion and background hemorrhage were evaluated. Results: The percentages of insufficient material were 16% and 22% (p = 0.18), for the auto-vacuum and pistol aspirates, respectively. Good cellularity was seen in 34% of autovacuum and 29% of pistol samples (p = 0.4). Cell distortion was seen in 31 and 26 cases, respectively (p = 07). Background hemorrhage occurred in 63 (35%) and 54 cases (31%) (p = 0.2), for auto-vacuum and pistol. The sensitivity was 88% and 86%; specificity 99% and 100%, positive predictive value 96% and and 100%, negative predictive value 96% and 95% and total occuracy 76% and 75% for the auto-vacuum and pistol, respectively. Conclusion: The results obtained from the two fine-needle aspiration biopsy methods were equivalent. Therefore, the auto-vacuum device is a good option for obtaining aspirates for cytology.1236271276Catania, S., Ciatto, S., Breast cytology: Instruments and technique (1992) Breast Cytology in Clinical Practice, pp. 11-60. , In: Ciatto S, editor. London: Martin DunitzDe Freitas Jr., R., Hamed, H., Fentiman, I., Fine needle aspiration cytology of palpable breast lesions (1992) Br J Clin Pract, 46 (3), pp. 187-190Franzen, S., Zajicek, J., Aspiration biopsy in diagnosis of palpable lesions of the breast. Critical review of 3479 consecutive biopsies Acta (1968) Radiol Ther Phys Biol, 7 (4), pp. 241-262Souza, J.A., Freitas Jr., R., Moreita, M.A.R., Philocreon, G.R., Acurácia da sensação tátil da PAAF no diagnóstico de less̄ocs mamárias (1995) Rev Bras Mastologia, 5 (3), pp. 7-10Freitas Júnior, R., Hamed, H., Millis, R.R., Tomas, N.M.A., Fentiman, I.S., Fine needle aspiration of breast lesions using auto-vacuum dispositive (1996) Rev Bras Mastologia, 6 (3), pp. 126-128de Freitas Júnior, R., Giraldo, P.C., Rerrori, O., Vieira-Matos, A.N., Tambascia, J.K., Fine needle aspiration biopsy of solid tumours by auto-vacuum system: A study in rats (1992) Eur J Surg Oncol, 18 (6), pp. 605-607Boccato, P., How to treat the aspirated material (1992) Breast Cytology in Clinical Practice, pp. 61-64. , In: Ciatto, S, editor London: Martin Dunitz(1987) International Union Against Cancer, , UICC. TNM classification of malignant tumors. Berlin: Springer-Verlag(1982) Am J Clin Pathol, 78 (6), pp. 806-816. , The World Health Organization Histological Typing of Breast Tumors - Second Edition. The World OrganizationGelabert, H.A., Hsiu, J.G., Mullen, J.T., Jaffe, A.H., D'Amato, N.A., Prospective evaluation of the rate of fine-needle aspiration biopsy in the diagnosis and management of patiencs with palpable solid breast lesions (1990) Am Surg, 56 (4), pp. 263-267Rouquayrol, M.Z., Epidemiologia e saúde (1988), Rio de Janeiro: Medsi - Editora CientíficaRoberts, J.C., Rainsbury, R.M., 'Tactile sensation: A new clinical sign during fine needle aspiration of breast lumps Ann (1994) R Coll Surg Eng, 76 (2), pp. 136-138Henderson, M.A., McCready, D.R., A simple technique for fine needle aspiration cytology (1994) J Am Coll Surg, 179 (4), pp. 471-473Sasaki, J., Izu, K., Automatic fine needle aspiration pistol specially designed for small tumors (1998) Acta Cytol, 42 (3), pp. 829-830Tao, L.C., Smith, J.W., Fine-needle aspiration biopsy using a newly-developed pencil-grip syringe holder (1999) Diagn Cytopathol, 20 (2), pp. 99-104Parel, J.J., Garrell, P.C., Smallwood, J.A., Fine needle aspiration cytology of breast masses: An evaluation of its accuracy and reasons for diagnostic failure (1987) Ann R Coll Surg Engl, 69 (4), pp. 156-159Abele, J., Stanley, M.W., Rollnis, S.D., Miller, T.R., What constitutes an adequate smear in fine-needle aspiration cytology of the breast? (1998) Cancer, 84 (1), pp. 57-61Zajdela, A., Ghossein, N.A., Pilleron, J.P., Ennuyer, A., The value of aspiration cytology in the diagnosis of breast cancer: Experience at the Fondation Curie (1975) Cancer, 35 (2), pp. 499-506Layfield, L.J., Dodd, L.G., Cytologically low grade malignancies: An important interpretative pitfall responsible for false negative diagnoses in fine-needle aspiration of the breast (1996) Diagn Cytopathol, 15 (3), pp. 250-259Feichter, G.E., Haberthür, F., Gobat, S., Dalquen, P., Breast cytology. Statistical analysis and cytohistologic correlations (1997) Acta Cytol, 41 (2), pp. 327-332Arisio, R., Cuccorese, C., Accinelli, G., Mano, M.P., Bordon, R., Fessia, L., Role of fine-needle aspiration biopsy in breast lesions: Analysis of a series of 4,110 cases (1998) Diagn Cytopathol, 18 (6), pp. 462-467Ariga, R., Bloom, K., Reddy, V.B., Fine-needle aspiration of clinically suspicious palpable breast masses with histopathologic correlation (2002) Am J Surg, 184 (5), pp. 410-41

    Ocorrência de pragas da mangueira e evolução da pesquisa entomológica no Submédio do Vale do São Francisco, Brasil.

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    O semi-árido nordestino brasileiro é privilegiado pela sua condição edafoclimática, possibilitando a colheita da manga exatamente nas janelas de mercado, abertas de outras regiões, tanto no mercado interno quanto no externo. Além disso, por sua escassez pluviométrica e baixa umidade, pode produzir frutos de melhor coloração, alto teor de açúcar e isentos de doenças típicas de outras regiões. Contudo, a alteração do agroecossistema, provocada pela expansão dessa anacardiácea, propiciou condições favoráveis ao surgimento de problemas fitossanitários, destacando-se, dentre esses, os relacionados às pragas. Com base em revisão bibliográfica, observações de campo e material enviado ao Laboratório da Embrapa Semi- Árido, analisou-se a ocorrência de pragas e a evolução da pesquisa entomolágica da mangueira, no Vale do São Francisco. Constatou-se como insetos-praga, em ordem decrescente de importância, moscas-das-frutas (Anastrepha spp. e Ceratitis capitata», microácaro da mangueira (Aceria mangiferae), mosquinha da manga (Erosomyia mangiferae), tripes (Selenothrips rubrocinctus), microlepidópteros da inflorescência, ainda não identificados, broca da mangueira (Hypocryphalus mangiferae), lagarta sussuarana (Megalopyge lanata), besouros (Costalimaita ferruginea vulgata, Sternocolaspis quantuordecincostata), coleobroca ( Chlorida festiva), cochonilhas (Aulacaspis tubercularis, Saissetia coffeae e Pinnaspis sp ), formigas cortadeiras (Alta sexdens rubropilosa, Atta laevigata e Acromyrmex spp.) e a abelha cachorro (Trigona spinipes). Para as espécies mais comuns de moscas-das-frutas, dispõe-se de conhecimentos da distribuição geográfica, biologia e comportamento, técnicas de monitoramento do pomar, estudos sobre a preferência para oviposição e alimentação, em diferentes cultivares, assim como pesquisa de controle biológico, utilizando-se o parasitóide da família Braconidae Diachasmimorpha longicaudata. Além disso, o Programa de monitoramento de moscas-das-frutas foi iniciado em 1989 e vem sendo realizado pela Embrapa Semi-Árido, em parceria com o MAA/VALEXPORT/ADAB/CODEVASF. Ressalta-se, que o tratamento hidrotérmico pós-colheita do fruto já vem sendo utilizado por empresas exportadoras de manga desde 1991, devido às exigências do mercado norte-americano. Objetivando-se conhecer a relação entre o microácaro A. mangiferae e Fusarium spp. na malformação da mangueira, também foram realizados estudos, constatou-se que conídios e/ou micélio do fungo são transportados superficialmente ou no interior do corpo do ácaro. Conclui-se que há necessidade de estudos que possibilitarão informações indispensáveis à racionalização do controle das pragas.Coordenado por Abel Rebouças São José, Tiyoko Nair Hojo Rebouças, Daniel Nieto Angel, Ivan Vilas Bôas Souza, Nilma Oliveira Dias, Marinês Pereira Bomfim. Trabalhos apresentados no I Simpósio Latino Americano sobre Produção deManga, 1999, Vitória da Conquista, BA
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