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Search Results: 1 - 10 of 426230 matches for " Ant?nio Enrique Say?o Sanjinés "
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Análise Multivariada de Dados Ecológicos da Baía de Guanabara- RJ,com Base em Foraminíferos Bent nicos.
Priscila Tavares dos Santos,Claudia Gutterres Vilela,José Antnio Baptista Neto,Antnio Enrique Sayo Sanjinés
Anuário do Instituto de Geociências , 2007,
Abstract: Guanabara bay is an estuary environment situated in the seaboard of Rio de Janeiro state, under the coordinates 22o 40’ and 23o 00’S and 43o 00’ and 43o 20’W. Nowadays, it has an approximate area of 377 km2, it has had a reduction of 91 km2 since the discovery of Brazil, being considered one of the most polluted seacoast regions of the country. The environmental monitoring of Guanabara bay becomes increasingly necessary in order to be capable of taking effectivemeasures in its management. Therefore, the use of bioindicator organisms, like foraminifera, is an excellent tool because of their rapid response to environmental changes. The goal of this paper is to apply statistical analyses to the biotic data benthicforaminifera), aiming to observe how they behave in Guanabara bay. In November 1999, samples of bottom sediment were collected along Guanabara bay; 52 of them distributed along all the bay were used in this study. They were treated and classified according to the pattern methodology for foraminifera. For the numerical ecology, grouping analysis and indicating species analysis (ISA) were done using the programs Statistica 6.0 and PCORD. Through the groupinganalysis, it was observed the formation of groups in both samples and species. ISA showed what species is the best one toindicate the actual state of Guanabara bay - Ammonia tepida. The multivaried ecological analyses had an optimal response in the evaluation of patterns of pollution in Guanabara bay, based on benthic foraminifera.
Effect of adding macro and micro minerals in pig feces fed diets with different levels of probiotic
Huaynate, Rizal Alcides Robles;Thomaz, Maria Cristina;Kronka, Rodolfo Nascimento;Fraga, Alessandro Luís;Scandolera, Antnio Jo?o;Budi?o, Fábio Enrique Lemos;
Brazilian Archives of Biology and Technology , 2006, DOI: 10.1590/S1516-89132006000400005
Abstract: this study aimed to verify the effect of diets with different doses (0, 100, 200 and 300 ppm) of probiotic on daily fecal production (dfp) and level of macro and micro minerals in feces of nursing (1st and 2nd initial phases) and growing pigs and during total period. the dfp, as percentage of body weight, was different (p<0.05) among treatments only at 1st initial phase. fecal levels of macro and micro minerals were similar (p>0.05) among treatments, with exception of calcium and sodium excretion at 1st initial phase and calcium, zinc and nickel during total period. the addition of a poliprobiotic to diets do not affect fecal production of nursing and growing pigs. however, the presence of microorganisms, added (levels of 200 and 300 ppm) in diets for nursing and growing pigs reduced fecal excretion of calcium, zinc and nickel.
Qualitative-feed-restricted heavy swine: meat quality and morpho-histochemical characteristics of muscle fibers
Fraga, Alessandro Luís;Thomaz, Maria Cristina;Kronka, Rodolfo Nascimento;Budi?o, Fábio Enrique Lemos;Huaynate, Rizal Alcides Robles;Scandolera, Antnio Jo?o;Ruiz, Urbano dos Santos;D'Angelis, Flora Helena de Freitas;
Brazilian Archives of Biology and Technology , 2009, DOI: 10.1590/S1516-89132009000500012
Abstract: to evaluate the effect of different levels of qualitative feed restriction (0, 5, 10, 15 and 20%) on pork quality and muscle morpho-histochemical characteristics, 60 castrated male swines were used. ten animals were slaughtered at 89 kg bw. other 50 pigs were fed experimental diets and slaughtered at 128 kg bw. qualitative restriction increased ph45, and water holding capacity, and reduced the redness, yellowness and cholesterol concentrations of longissimus lumborum. quadratic tendency for oleic acid contents of loin and fiber cross-section area of multifidus dorsi (p=0.08) were observed, with maximum point at 11-12% of restriction. no effect (p>0.1) on percentage of m. dorsi fibers so, fg and fog was found. the meat from 128-kg-bw pig showed numerically higher values for colorness, water losses, and lipid content and lower shear force than 89-kg-bw pigs. qualitative feed restriction for finishing swines neither affected negatively pork quality nor modified the muscle fiber profile.
Effect of probiotic and prebiotic inclusion in weaned piglet diets on structure and ultra-structure of small intestine
Budi?o, Fábio Enrique Lemos;Thomaz, Maria Cristina;Kronka, Rodolfo Nascimento;Nakaghi, Laura Satiko Okada;Tucci, Fernanda Marcussi;Fraga, Alessandro Luís;Scandolera, Antnio Jo?o;Huaynate, Rizal Alcides Robles;
Brazilian Archives of Biology and Technology , 2005, DOI: 10.1590/S1516-89132005000800008
Abstract: forty-four piglets weaned were distributed in a complete randomized blocks in factorial scheme. experimental diets were: t1 = basal diet (bd); t2 = bd + antibiotic; t3 = bd + probiotic; t4 = bd + prebiotic; t5 = bd + symbiotic (t3+t4). as control, four piglets were slaughtered at weaning. seven and 14 days after weaning, four animals per treatment were slaughtered. small intestine segments were sampled from each animal for electron and light microscopy evaluation. the evaluated micro-ingredients affected intestinal histology. it was observed higher villous density in duodenum of piglets fed diet with prebiotic in relation to those fed diets with probiotic. in jejunum of piglets fed diets with prebiotic was found higher villous density, but this difference was not significant. in relation to bd, symbiotic increased duodenal micro-villous height at the 14th day after weaning. piglets supplemented with probiotic had better recovering of micro-villous density in relation to those fed with other diets.
Efeitos de fontes protéicas na dieta sobre a morfologia intestinal e o desenvolvimento pancreático de leit?es recém-desmamados
Scandolera, Antnio Jo?o;Thomaz, Maria Cristina;Kronka, Rodolfo Nascimento;Fraga, Alessandro Luís;Budi?o, Fábio Enrique Lemos;Huaynate, Rizal Alcides Robles;Ruiz, Urbano dos Santos;Cristani, José;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000700023
Abstract: this trial was carried out to evaluate the effects of replacing soybean meal with hydrolyzed protein of the cellular content of yeast (hpccy), isolated protein of soy (ips), hydrolyzed protein of intestinal mucosa membrane of swine (hpims) and dried whole milk on intestinal mucosa membrane morphology and pancreas development of weaned pigs at 7 and 14 days post weaning. fourty-four piglets (averaging 5.5 ± 0.6 kg) were fed the following isonutritive diets: sm - yellow corn-soybean meal based diet; dwm - sm plus dried whole milk; dwm+hpims - dwm plus hpims; dwm+ips dwm plus ips; dwm+hpccy- dwm plus hpccy. the treatments did not influence the pig intestinal structure, showing that none of the protein sources minimized the harmful effects of feeding change on the intestinal epithelium. dwm+hpims and dwm+ips provided the greatest pancreatic weight at 7 days post weaning. it was concluded that all studied protein sources were adequate to formulate diets for weaned piglets.
Biofertilizante agrobio: uma alternativa no controle da mancha bacteriana em mudas de piment?o (Capsicum annuum L.)
Deleito, Cláudia Sayo Ramirez;Carmo, Margarida Goréte Ferreira do;Fernandes, Maria do Carmo de Araújo;Abboud, Antnio Carlos de Souza;
Ciência Rural , 2004, DOI: 10.1590/S0103-84782004000400010
Abstract: agrobio is a liquid biofertilizer made from fresh cattle manure, water, molasses and minerals, which are fermented under room temperature in open containers for 56 days. this product has been widely used by organic and conventional farmers throughout rio de janeiro state for the control of several plant pathogens in different crops. greenhouse bioassays showed that xanthomonas campestris pv. vesicatoria in pepper (capsicum annuum) transplants were satisfactorily controlled when concentration of agrobio was 5%. in vitro assays using concentrations of 2, 5, 10 and 50% showed that concentrations above 5% were capable of controlling the pathogen. however, the levels of control of agrobio were lower than those of copper sulfate and streptomycin sulfate.
Beaufils ranges to assess the cotton nutrient status in the southern region of Mato Grosso
Serra, Ademar Pereira;Marchetti, Marlene Estev?o;Rojas, Enrique Pouyú;Vitorino, Antnio Carlos Tadeu;
Revista Brasileira de Ciência do Solo , 2012, DOI: 10.1590/S0100-06832012000100018
Abstract: the relationships between nutrient contents and indices of the diagnosis and recommendation integrated system (dris) are a useful basis to determine appropriate ranges for the interpretation of leaf nutrient contents. the purpose of this study was to establish beaufils ranges from statistical models of the relationship between foliar concentrations and dris indices, generated by two systems of dris norms - the f value and natural logarithm transformation - and assess the nutritional status of cotton plants, based on these beaufils ranges. yield data from plots (average acreage 100 ha) and foliar concentrations of macro and micronutrients of cotton (gossypium hirsutum r. latifolium) plants, in the growing season 2004/2005, were stored in a database. the criterion to define the reference population consisted of plots with above-average yields + 0.5 standard deviation (over 4,575 kg ha-1 seed cotton yield). the best-fitting statistical model of the relationship between foliar nutrient concentrations and dris indices was linear, with r2 > 0.8090, p < 0.01, except for n, with r2 = 0.5987, p < 0.01. the two criteria were effective to diagnose the plant nutritional status. the diagnoses were not random, but based on the effectiveness of the chi-square-tested method. the agreement between the methods to assess the nutritional status was 92.59-100 %, except for s, with 74.07 % agreement.
Development of sequential injection methodologies for the spectrophotometric direct and kinetic determination of aluminium in natural and waste waters
Mesquita, Raquel B. R.;Rangel, António O. S. S.;
Journal of the Brazilian Chemical Society , 2008, DOI: 10.1590/S0103-50532008000600018
Abstract: two sequential injection methodologies for the spectrophotometric determination of reactive aluminium in water samples are proposed, based on the reaction between chrome azurol s (cas) and aluminium. the two methods involve a direct and a kinetic methodology (for its application to coloured waste waters), both accommodated within the same manifold. the working ranges obtained were: 0.040-0.500 mg al l-1 for direct method and 0.050-0.300 mg al l-1 for the kinetic method. the described system has high degree of automation, enabling sampling throughputs of 31 and 57 h-1 for the kinetic method and direct methods, respectively. the reagents consumption per determination is low: 46 μg of cas, 3.75 mg of sodium acetate and 25 μg of ascorbic acid. the volume of effluent produced per determination is only around 2.8 ml in the direct method and 3.4 ml in the kinetic method.
Spectroscopic Analysis of a Theropod Dinosaur (Reptilia, Archosauria) from the Ipubi Formation, Araripe Basin, Northeastern Brazil
Jo?o Hermínio da Silva,Francisco Eduardo de Sousa Filho,Antnio álamo Feitosa Saraiva,Nádia Amanda Andrade,Bartolomeu Cruz Viana,Juliana Manso Sayo,Bruno Tavares de Oliveira Abagaro,Paulo de Tarso Cavalcante Freire,Gilberto Dantas Saraiva
Journal of Spectroscopy , 2013, DOI: 10.1155/2013/437439
Abstract: The Araripe Sedimentary Basin is known by the excellence of its fossils, regarding the preservation, diversity, and quantity. Here, we present a spectroscopic analysis using several experimental techniques (X-ray energy dispersion spectroscopy, Fourier-transform infrared spectroscopy) as well as X-ray diffraction and thermogravimetric analysis applied in small fragments of bones from the posterior members of a theropod dinosaur. The results agree regarding the different composition of the stone matrix and the fossilized bone, indicating a partial substitution of the material by elements present in the depositional environment. However, differently from what is believed to occur, there is evidence that pyritization is not the only mechanism of fossilization for a specimen of Ipubi formation, but calcification, additionally, plays an important role in the fossil production of this Formation. 1. Introduction The geological process of sedimentation, which has happened throughout millions of years, can include the preservation of animal and vegetal specimens from ancient times under the form of fossils [1]. The occurrence of this process involves a series of chemical events, many not yet completely understood. For the fossil preservation, for example, it is known that total or partial alteration of its chemical composition is verified. Some of the most important processes include the dissolution and removal of mineralized material by the interstitial waters which seep into the bone and replace the chemicals with rock-like minerals. The process of fossilization involves dissolving and replacing the originals minerals in the object (such as hydroxyapatite) with other minerals (such as calcite) [1]. In alkaline regions, the dissolution of the silicon dioxide is more probable to occur, while in regions highly acidic, the dissolution of the calcium carbonate it is supposed to happen. Diverse processes can be associated with different regions, but even in only one region it is possible to be associated with many mechanisms of fossilization [2, 3]. In the Brazilian depositional scenario the Araripe Sedimentary Basin is one of the localities where different fossilization processes act. Located among the states of Ceará, Pernambuco, and Piauí, at the northeast of Brazil, it comprises around 12,000?km2, and it is considered the largest interior northeastern sedimentary basin [4]. From a geological point of view, Araripe Basin is formed by four main stratigraphic sequences [4]: (i) a Paleozoic sequence composed of the Cariri formation; (ii) a Juro-Neocomian sequence
Parámetros de Transferencia de Materia en el Secado de Frutas, sin Necesidad de Datos de Disminución de Volumen
Ferreira,Sebasti?o R; Costa,Antnio R. S;
Información tecnológica , 2010, DOI: 10.4067/S0718-07642010000500012
Abstract: an analytical methodology was developed to determine mass transfer parameters during cylindrical fruit drying, without the need for shrinkage data, but implicitly considering radius shrinkage r during the drying process. with the method one can simultaneously evalúate the external mass transfer coefficient km, the effective water diffusivity in fruit def, the biot number bi and the average radius rm during drying. to test the methodology, experimental data of the water mass in fruit ma versus time t, and its characteristic dimensions at the start of process were needed. the valúes obtained for bi, def and kmwere in good agreement with valúes found in the literature, calculated by a numerical method. the proposed methodology can be used to estímate drying parameters with good accuracy without the need of shrinkage data.
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