153 research outputs found
Perfil hematológico do Sorubim lima (Siluriformes, pimelodidae) de cativeiro: intervalos de referência, morfologia e citoquímica celular
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias. Programa de Pós-Graduação em Aquicultura, Florianópolis, 2013A hematologia consiste em uma análise rápida e prática para auxiliar o diagnóstico do desequilíbrio homeostático em peixes. Este estudo determinou os intervalos de referência sanguíneos em importante bagre nativo da América do Sul, Sorubim lima, criado na região do pantanal e descreve as características morfológicas e citoquímicas das células. Um total de 92 peixes de piscicultura foram examinados para determinação dos intervalos de referência 25 - 75%, concentração de proteínas plasmáticas totais, hemoglobina, número total de eritrócitos (ERT), hematócrito, volume corpuscular médio (VCM), concentração da hemoglobina corpuscular média (CHCM), trombócitos totais e leucócitos totais (LEU). PAS com amilase salivar, azul de bromofenol, sudan black B e azul de toluidina (metacromasia) foram as colorações citoquímicas empregadas para sinalizar glicogênio, proteínas, lipídeos e núcleos em trombócitos e leucócitos. Nas extensões sanguíneas, monócitos, linfócitos, neutrófilos, basófilos, eosinófilos, LG-PAS e trombócitos foram observados. Resultados semelhantes a outros siluriformes foram observados nas características morfológicas de neutrófilos e eusinófilos. ERT, hematócrito e VCM apresentaram índices com as menores variações, em relação a demais pimelodídeos. Diferentemente de outros peixes siluriformes, S. lima apresentou simultaneamente eosinófilos e basófilos circulantes. Abstract : Haematology consists in a rapid and practical analysis to assist the diagnosis of fish homeostatic imbalance. This study determined the blood reference intervals in an important native South American catfish farmed in the brazilian pantanal wetland, Sorubim lima, and describes the morphological and cytochemical characteristics of cells. A total of 92 fish reared in a fish farm were examined for reference intervals 25 - 75% of total plasmatic protein, hemoglobin, red blood cell count (RBC), hematocrit, mean corpuscular volume (MCV), mean corpuscular hemoglobin concentration (MCHC) and total thrombocyte and leukocyte count (WBC). PAS with salivary amylase, bromophenol blue, sudan black B and toluidine blue (metacromasy) were the cytochemical stains employed to signal glycogen, proteins, lipids and nuclei in thrombocytes and leucocytes. In the blood smears, monocytes, lymphocytes, neutrophils, basophils, eosinophils, LG-PAS and thrombocytes were observed. Siluriforms similar results were observed in neutrophils and eosinophils morphology. Compared to other pimelodids, RBC, hematocrit and MCV showed index lowest variation. Differently from other siluriforms fishes, S. lima showed the concomitant presence of circulating eosinophils and basophils
Geomorphology and clast assemblages of intertidal beachrock: Implications for submerged shoreline preservation
No full textBeachrock may be considered a reliable indicator of sea level, in addition to a reliable and recognizable source foronshore movement of beachrock clasts by overwash processes associated with extreme events. Key to this is itsgeomorphologyand preservation potential, both of whichare poorly understood. Here we examine the processesand deposits associated with beachrock breakdown from Camurupim, NE Brazil and compare its preservation tobeachrocks found on continental shelves in South Africa. We study a prominent and continuous 50–60 m-widebeachrock complex that crops out along a 10 km stretch of coastline, and which mostly comprises 1.5 to 2 m-thick trough-crossbedded sandstones. These have generated large joint-bounded blocks that have beentransported landwards under extreme energy conditions (based on numerical modelling and comparisons tothe contemporary wave climate). Tabular clasts have accumulated as isolated, very coarse boulders on the sea-ward margin, small clasts in various topographic traps, boulder ridges with large landward- and seaward-dipping clasts on the uppermost part of the outcrop, and subaqueous and subaerial washover fans. Isolatedfine meso-boulders emplaced during extreme waves (Hs= ca. 12 m) exhibitfitted textures and pressure-solution contacts, pointing to subsequent rocking and shaking. Smaller clasts in boulder ridges and overwash set-tings are initially liberated and transported by waves within the annual-decadal frequency spectrum, depositedon the high points of the outcrop. Subsequent movement during less extreme wave action progressively trans-ports the clasts across the surface, where they are often trapped in thefitted fabric on top of the platform. Ourbreakdown model and overall beachrock preservation scheme is consistent with reported seismic signatures ofsubmerged Holocene beachrock shorelines. Beachrock preservation during transgression is strongly influencedby the original sedimentary facies; thick, trough-crossbedded joint-bound clasts preserve the former shoreline.Clasts from the planar units accumulate as washover fans to landwards of the ridge
Use Of Stabilization Pond Sludge In Cultivation Of Roses [uso De Lodo De Lagoa De Estabilização No Cultivo De Roseira]
No full textOne option for the increasing production of sewage sludge (SS) is its agricultural use in crops with high nutritional demand, such as the rose. Therefore, the aim of this work was to study the application of SS from primary stabilization pond in roses of the variety 'Carola'. For the experiment, the roses were planted in 20 L recipients using increasing doses of sludge (T2 - 12 Mg ha-1, T3 - 24 Mg ha-1 and T4 - 36 Mg ha-1), mineral fertilizer (T5) and control treatment (T1, without N) in a randomized block design. The evaluated parameters were: roots dry mass, aerial dry mass, total biomass, leaflets area and nitrogen concentration in the leaf. The SS application resulted in better development of the rose, increasing the roots and the aerial biomasses, the leaflets area, and nitrogen content in the leaves compared to the control (T1). There was no statistical difference between the use of mineral fertilizer (T5), and the SS under the highest dose (T4). With these benefits, the use in agriculture of sewage sludge derived from stabilization ponds proved to be an adequate option for its disposal.1818589Ahmad, I., Dole, J.M., Nelson, P., Nitrogen application rate, leaf position and age affect leaf nutrient status of five specialty cut flowers (2012) Scientia Horticulturae, 142, pp. 14-22Antolín, M.C., Muro, I., Sánchez-Días, M., Applications of sewage sludge improves growth, photosynthesis and antioxidant activities of nodulated alfalfa plants under drought conditions (2010) Environmental and Experimental Botany, 68, pp. 75-82Barbieri, R.L., Stumpf, E.R.T., Origem, evolução e história das rosas cultivadas (2005) Revista Brasileira Agrociência, 11, pp. 267-271Bezerra, L.J.D., Lima, V.L.A., Andrade, A.R.S., Alves, V.W., Azevedo, C.A.V., Guerra, H.O.C., Analise de crescimento do algodão colorido sob efeitos da aplicação de água residuária e biossólido (2005) Revista Brasileira de Engenharia Agrícola e Ambiental, 9 (SUPPL.), pp. 333-338Boeira, R.C., Lixiviação de nitrogênio em Latossolo incubado com lodo de esgoto (2009) Revista Brasileira de Ciência do Solo, 33, pp. 947-958Boen, A., Haraldsen, T.K., Fertilizer effects of increasing loads of composts and biosolids in urban greening (2011) Urban forestry & Urban Greening, 10, pp. 231-238Cabrera, R.I., Evaluating yield and quality of roses with respect to nitrogen fertilization and leaf nitrogen status (2000) Acta Horticulturae, 511, pp. 133-142Cabrera, R.I., Evans, R.Y., Paul, J.L., Nitrogen partitioning in rose plants over a flowering cycle (1995) Scientia Horticulturae, 63, pp. 67-76Casarini, E., (2004) Doses de N e K aplicados via fertirrigação na cultura da roseira (Rosa sp.) em ambiente protegido, p. 102. , Piracicaba: USP, Tese DoutoradoCasarini, E., Folegatti, V., Aspectos importantes na nutrição mineral de rosas (2006) Avances sobre fertirriego em la floricultura colombiana, pp. 163-178. , In: Flórez R., V. J.C. Fernández, A. de laMiranda, L. D.Chaves C., BernardoGuzmán P., J. M. (ed.), Bógotá: Universidad Nacional de Colômbia. Facultad de AgronomiaChiba, M.K., Mattiazo, M.E., Oliveira, F.C., Cultivo de cana de açúcar em argissolo tratado com lodo de esgoto. II-Fertilidade e nutrição de plantas (2008) Revista Brasileira de Ciência do Solo, 32, pp. 653-662(2011) Define critérios e procedimentos, para o uso agrícola de lodos de esgoto gerados em estações de tratamento de esgoto sanitário e seus produtos derivados, e dá outras providências, , http://www.mma.gov.br/port/conama/res/res06/res37506.pdf, CONAMA-Conselho Nacional do Meio Ambiente. Resolução n. 375 de 29 de agosto de 2006, Diário oficial da Republica federativa do Brasil. Brasília, DF., 9 JunFrança, J.T.L., Stefanutti, R., Coraucci Filho, B., Anaruma Filho, F., França, L.L.L., Remoção de lodo de lagoas de estabilização e seu acondicionamento em bag (2011) Revista DAE, 185, pp. 53-63Guedes, M.C., Poggiani, F., Variação dos teores de nutrientes foliares em eucaliptos fertilizados com biossólido (2003) Scientia Forestalis, 63, pp. 188-201Lobo, T.F., Grassi Filho, L.H., Níveis de lodo de esgoto na produtividade do girassol (2007) Revista de la ciencia suelo y nutrición vegetal, 7, pp. 16-25Malavolta, E., Gomes, F.P., Alcarde, J.C., (2002) Adubos e adubações, p. 200. , São Paulo: Nobelde Maria, I.C., Chiba, M.K., Costa, A., Berton, R.S., Sewage sludge application to agriculture land as soil physical conditioner (2010) Revista Brasileira de Ciência do Solo, 34, pp. 967-974Mata-González, R., Sosebbe, R.E., Wan, C., Physiological impacts of biosolids application in desert grasses (2002) Environmental and Experimental Botany, 48, pp. 139-148Pedroza, J.P., van Haandel, A.C., de Beltrão, N.E.M., van Dionísio, J.A., Produção e componentes do algodoeiro herbáceo em função da aplicação de biossólidos (2003) Revista Brasileira de Engenharia Agrícola e Ambiental, 7, pp. 483-488Raij, B., Cantarella, H., Quaggio, J.A., Furlani, A.M.C., (1997) Recomendações de adubação e calagem para o Estado de São Paulo, p. 285. , 2. ed. Campinas: Instituto AgronômicoRouphael, Y., Mouneimne, A.H., Ismail, A., Mendoza-de Gyves, E., Rivera, C.M., Colla, G., Modeling individual leaf area of rose (Rosa hybrida L.) based on leaf length and width measurement (2010) Photosynthetica, 48, pp. 9-15Simonete, M.A., Kiehl, J.C., Andrade, C.A., Teixeira, C.F.A., Efeito do lodo de esgoto em um argissolo e no crescimento e nutrição de milho (2003) Pesquisa Agropecuária Brasileira, 38, pp. 1187-1195Singh, R.P., Agrawal, M., Variations in heavy metal accumulation, growth and yield of rice plants grown at different sewage sludge amendment rates (2010) Ecotoxicology and Environmental Safety, 73, pp. 632-641Sonneveld, C., Voogt, W., (2009) Plant nutrition of greenhouse crops plant nutrition of greenhouse crops, p. 432. , 1. ed. Heidelberg: SpringerTamimi, Y.N., Matsuyama, D.T., Takata, K.D.I., Nakano, R.T., Distribution of nutrient in CUT-flower roses and the quantities of biomass and nutrients removed during harvest (1999) Horticulture Science, 34, pp. 251-253Tsutiya, M.T., Característica de biossólidos gerados em estações de tratamento de esgoto. (2001) Biossólidos na agricultura, pp. 89-129. , In: Tsutiya. M. T.Comparini, J. B.Além Sobrinho, P.Hespanhol, I.Carvalho, P. C. T.Melfi, A. J.Melo, W. J.Marques, M. O.(ed.), São Paulo: SABESP, Cap.4Vega, F.V.A., Bovi, M.L.A., Godoy Jr., G., Berton, R.S., Lodo de esgoto e sistema radicular da pupunheira (2005) Revista Brasileira de Ciência do Solo, 29, pp. 259-26
Analytical pyrolysis (Py‐GC/MS) of sediments: sea‐level rise episodes During the holocene in the potengi–jundiai estuary, ne brazil
No full textPóster presentado en el la XVI Reunión Científica de la Sociedad Española de Cromatografía y Técnicas Afines (SECyTA2016) P‐ENV‐31Eds: González-Pérez, José Antonio.-- Almendros Martín, Gonzalo.-- González-Vila, Francisco Javier.-- Rosa Arranz, José M. de laUnderstanding sea‐level changes on various time‐scales is important because it is usually associated to climate changes [1]. Sediments in estuaries may retain a continuous record of climatic and environmental markers surrogated to factors like relative sea level (RSL), vegetation cover, and connectivity with the open ocean. Sediments accumulated since the last glacial maximum (LGM; c. 20 kyr.) are particularly informative and encompass valuable information to infer accurate RSL curves. Lipid biomarkers are preserved in sediments and include molecular markers like n‐alkanes and n‐alkanoic acids increasingly used for paleoclimate and paleoenvironmental reconstructions [2]. In this communication analytical pyrolysis (Py‐GC/MS) is used to study the structure of organic matter (OM) contained in dated sediments from core IG‐8 (31 m depth). This technique has been previously used to monitor past environmental changes in the area [3]. The core was drilled in the area of central flood delta of Potengi‐Jundiai estuary, through the sedimentary sequence accumulated since ca 9,8 kyr cal BP [4]. Marked compositional differences between the OM of different ages were found. Specifically the n‐alkane series were found particularly informative in discriminating OM sources (terrigenous vs marine). In the surface, the alkane series is characterized by a high average chain length (ACL) value indicating a clear influence from terrestrial vegetation. From 6.5 to 11.5 m depth an increase in the terrigenous contribution is observed by an increase in ACL values in correspondence with δ13C depletion. At 22.8 m depth and at 26.6 m there are again inputs from terrestrial plants, but for short periods of Time. Bellow 26.6 m the influence is marine and ends at 29.45 m with a neat alteration of sediment isotopic signature with a δ13C enriched layer with no organic markers and indicating the occurrence of sedimentary conditions favouring carbonate formation. Below this depth, the OM in the sediments shows a conspicuous terrestrial influence (depleted conductivity and δ13C and increase in alkanes ACL and long vs short chain length (L/S) ratio) that increase towards bottom of the core down at 30.95 m. This possibly indicates a drastic sea‐level change during this period of time.[1] G. Milne, A&G 49 (2008) 2.24‐2.28. (doi: 10.1111/j.1468‐4004.2008.49224.x)
[2] T.I. Eglinton, G. Eglinton, Earth Planet. Sc. Lett. 275 (2008) 1‐16. (doi: 10.1016/j.epsl.2008.07.012)
[3] T. Boski, R.J. Angulo, M.C. Sousa Bezerra, E.G. Barboza, H. Knicker, J.A. González‐Pérez, F.J. González‐Vila, J. Quat. Sc. 30 (2015) 9‐18. (doi: 10.1002/jqs.2753)
[4] T. Boski, F.H.R. Bezerra. L.F. Pereira, A.M. Souza, R.P. Maia, F.P. Lima‐Filho, Marine Geol. 365 (2015) 1‐13. (doi: 10.1016/j.margeo.2015.04.N
Hydrogeochemistry of Watersheds in a Semi-Arid Region: Case Study on the Cobras River, RN
No full textGround-Penetrating Radar and 3D Modelling for Adequateness of the Underground Dams in the Brazilian Semiarid
No full textCARACTERIZAÇÃO MORFOMÉTRICA E PERFIL LONGITUDINAL PARA LOCAÇÃO DE BARRAGENS SUBTERRÂNEAS
No full textAspectos morfofisiológicos observados para melhoria do manejo de indução de partos com o uso de prostaglandina em fêmeas suínas
No full textTCC (graduação em Agronomia) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, 2008O trabalho para melhorias do manejo de indução de parto, foi realizado nas granjas multiplicadoras da empresa SADIA S.A., no município de Toledo PR. Nestas granjas são produzidas as fêmeas F1 mães dos suínos terminados no campo. O manejo de indução é interessante para concentrar os partos em turnos em que hajam mais funcionários na granja e estes possam assistir aos partos, tendo como objetivo a redução de mortalidade dos leitões a mortalidade em partos não assistidos chega a até 20%, sendo que nos assistidos chega a 2%, ou seja, há um aumento no número de leitões desmamados/porca/ano e conseqüentemente na receita e nos lucros, este estudo de melhorias no manejo de indução de partos se tornou necessário por conta de algumas UPLs não conseguirem ajustar o manejo e os partos continuarem muito dispersos durante o dia. Foram analisados os dados de partos de 200 fêmeas Landraces P.O., das linhagens 6 e 8 da SADIA S.A., o principal dado avaliado foi o intervalo de tempo entre a aplicação de prostaglandina e o início do parto (IIP) que ocorria apartir do nascimento do primeiro leitão, eram aplicadas 52,5µg de D-Cloprostenol via sub mucosa vulvar (SMV). As aspectos morfofisiológicos que foram avaliadas nas fêmeas e correlacionadas com IIP eram facilmente identificáveis ou acessíveis, eram elas: Ordem de parto ou idade da fêmea, escore corporal, período gestacional e linhagem da fêmea. Estas aspectos morfofisiológicos apresentaram baixíssimas correlações com o IIP, a média geral e o desvio padrão do IIP foram de 27,225 e 5,752 respectivamente, um desvio padrão alto, assim como nas outras aspectos morfofisiológicos , o que deixa as tendências encontradas destas com relação ao IIP pouco aceitáveis. As tendências encontradas foram: fêmeas com escore corporal grau 1 e 4, mais velhas, menor período gestacional e da linhagem 8, tenderam a ter os menores IIP, para essas fêmeas a recomendação foi induzí-las 25 horas antes do pico de ocorrência de partos desejado e as fêmeas de aspectos morfofisiológicos contrárias ou de 2, 3 e 5 de grau de escore, 29 horas antes
ERT and GPR survey of collapsed paleocave systems at the western border of the Potiguar Basin in northeast Brazil
No full textCollapsed paleocave systems are carbonate reservoirs with high internal spatial complexity that are the result of several stages of karst processes. Paleocave-related reservoirs can be spread over large areas with significant thicknesses that are favourable for hydrocarbon exploration. Nevertheless, few studies have provided a detailed understanding of the strong lateral heterogeneity of these reservoirs and their complex karst-controlled development using modern karst terrain analogues. To elucidate this issue, the internal architecture of a collapsed paleocave system has been mapped accurately at the western border of the Potiguar Basin in Northeastern Brazil. The collapsed paleocaves outcrop in an escarpment that delimits the carbonate platform from the transgressive phase of the basin. Electrical resistivity tomography (ERT) and ground-penetrating radar (GPR) sections were acquired parallel and perpendicular to a road cut and served to parameterize the geophysical signatures of the collapsed paleocaves and the host rocks. The collapsed paleocaves were mapped by identifying high-resistivity zones and high-amplitude ground-penetrating radar reflectors. In contrast, the host rocks are marked by low to intermediate resistivity and ground-penetrating radar reflections that range from low amplitude to almost transparent. The resistivity data and the ground-penetrating radar attribute of the rootsquare energy enabled the mapping of the complex spatial distribution of the collapsed paleocaves system. At depths of approximately 20 m, the paleocaves are more spread out and eventually become isolated while sometimes being connected vertically through shafts. However, at shallower levels, the paleocaves are interconnected by ducts or coalesce into a system of paleocaves that are hundreds of metres long over an area of 12000 m2. The results of the study show the detailed internal geometry of this paleocave system at a subseismic scale, which enables the identification of the connectivity pattern among these karst features and the porosity and total volume of the reservoir. This system could serve as an outcrop analogue for other collapsed paleocave carbonate reservoirs worldwide
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