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Search Results: 1 - 10 of 297537 matches for " Júnior Dasoler;Feiden "
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Proteína e energia na dieta de jundiás criados em tanques-rede
Freitas, Jakeline Marcela Azambuja de;Sary, Cesar;Luchesi, Júnior Dasoler;Feiden, Aldi;Boscolo, Wilson Rogério;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011001200002
Abstract: the objective of this study was to evaluate the influence of two levels of digestible energy (3250 and 3500 kcal kg-1) in conjunction with three levels of crude protein (25, 30 and 35%) on the productive performance of catfish (rhamdia voulezi) juveniles. two-hundred and forty catfish juveniles with 95.55±6.70 g average weight and 20.43±1.13 cm total length were randomly assigned into twenty-four 370 l-cages, in a factorial arrangement with six treatments and four reptitions. feeding was performed four times a day, ad libitum. at end of experimental period, the factorial analysis of variance showed significant influence with respect to the different parameters evaluated. the fish fed with diets of 30% crude protein and 3,250 kcal digestible energy kg-1 of diet presented the best results. therefore, diets with at least 30% crude protein and 3,250 kcal digestible energy kg-1 are recommend for catfish juveniles.
Análise da adequa??o ambiental e manejo dos dejetos de instala??es para suinocultura em propriedades na regi?o oeste do Paraná
Daga, Jacir;Campos, Alessandro T.;Feiden, Armin;Klosowski, Elcio S.;Camara, Roberto J.;
Engenharia Agrícola , 2007, DOI: 10.1590/S0100-69162007000400001
Abstract: the swine dejections are polluting residues that harm the environment, in special the water quality and the development of fish and other aquatic organisms. the objective of this work was to verify the profile of the swine raise, analysis of the adequacy of the installations, the systems of the dejection handling, as well as the adequacy to the environmental legislation of the agricultural properties located in the microatchment of ajuricaba stream, selected and located in the hydrographical basin of the s?o francisco verdadeiro river, in the western region of paraná. the results presented in this work mention ten properties of 110 analyzed. the profile of the swine raise is of 80% of the swine breeder with handling system in termination and 20% in complete cycle; none of the buildings have the thin layer water system; all the installations uses the system of scraping cleanness; the frequency of the cleanness of the bay in the installations is daily; wastefulness of ration in 90% of the evaluated installations was not observed; the main problem of the installations is the access of rain water in the narrow channels and all the properties of the microatchment of the ajuricaba stream have problems with the clear forest.
Cellular neural networks for motion estimation and obstacle detection
D. Feiden,R. Tetzlaff
Advances in Radio Science : Kleinheubacher Berichte , 2003,
Abstract: Obstacle detection is an important part of Video Processing because it is indispensable for a collision prevention of autonomously navigating moving objects. For example, vehicles driving without human guidance need a robust prediction of potential obstacles, like other vehicles or pedestrians. Most of the common approaches of obstacle detection so far use analytical and statistical methods like motion estimation or generation of maps. In the first part of this contribution a statistical algorithm for obstacle detection in monocular video sequences is presented. The proposed procedure is based on a motion estimation and a planar world model which is appropriate to traffic scenes. The different processing steps of the statistical procedure are a feature extraction, a subsequent displacement vector estimation and a robust estimation of the motion parameters. Since the proposed procedure is composed of several processing steps, the error propagation of the successive steps often leads to inaccurate results. In the second part of this contribution it is demonstrated, that the above mentioned problems can be efficiently overcome by using Cellular Neural Networks (CNN). It will be shown, that a direct obstacle detection algorithm can be easily performed, based only on CNN processing of the input images. Beside the enormous computing power of programmable CNN based devices, the proposed method is also very robust in comparison to the statistical method, because is shows much less sensibility to noisy inputs. Using the proposed approach of obstacle detection in planar worlds, a real time processing of large input images has been made possible.
Development of fingerlings of Piracanjuba (Brycon orbignyannus), Vallencienes (1849) (Teleostei: characidae) in tanks fertilized with organic manures/ Desenvolvimento de juvenis de Piracanjuba (Brycon orbignyannus), Vallencienes (1849) (Teleostei: characidae) em tanques experimentais fertilizados com aduba o organica
Aldi Feiden,Carmino Hayashi
Semina : Ciências Agrárias , 2005,
Abstract: The objective of this paper was to study the development of Piracanjuba (Brycon orbignyanus) in tanks under differents organic fertilizers. The experiment, entirely randomized, was accomplished in 16 tanks of 1000 liters, fertilized with manures of bovine (BOV), pigs (SUI), chickens (FRG) and others without fertilizer (SAO), using 15 fish/m3 with an initial average weight and length of 10,87+0,31 g e 9,78+0,07 cm. After 30 days, the experiment showed a uniform development of the fish and high survival rate in thestudied density. The treatments presented significant statistical differences (P<0,05) for weight gain and daily growth, except for the treatments BOV and SUI when compared to each other. The temperature and the dissolved oxygen were the abiotic factors that exerced a larger influence on the aquatic biota, affecting the development of the fish. Among the phytoplankton there was a larger presence of nanoplanktonic organisms favoring the development of the zooplankton, mainly the Clorophyta, with the Scenedesmus species, and the Cianophyta, with the Microcystis species, and among the zooplankton,the largest presence was of the rotifera from the species Brachionus and Keratella, followed by the copepods. The treatment fertilized with manure of chickens made possible a larger development of the plankton community, and better results of the development of the fish, demonstrating the importance of natural food in its diet. O objetivo deste trabalho foi estudar o desenvolvimento de juvenis de Piracanjuba (Brycon orbignyanus), em tanques com aduba es organicas. O experimento, inteiramente casualizado, foi realizado em 16 tanques de 1000 litros, adubados com estercos de bovinos (BOV), suínos (SUI), frangos de corte (FRG) e outros sem aduba o (SAO), utilizando 15 peixes/m3 com peso e comprimento médios iniciais de 10,87+0,31 g e 9,78+0,07 cm. Após 30 dias, o experimento mostrou um desenvolvimento uniforme dos peixes e alta taxa de sobrevivência na densidade estudada. Os tratamentos apresentaram diferen as estatisticamente significativas (p < 0,05) para ganho de peso e crescimento diário, com exce o dos tratamentos BOV e SUI quando comparados entre si. A temperatura e o oxigênio dissolvido foram os fatores abióticos que exerceram maior influência sobre a biota aquática, afetando o desenvolvimento dos peixes. Entre o fitoplancton houve maior abundancia de organismos nanoplanct nicos favorecendo o desenvolvimento do zooplancton, destacando-se as clorófitas, com o gênero Scenedesmus, e as cianofíceas, com o gênero Microcystis, e entre o zooplancton, a maio
Eclipsing binary systems as tests of low-mass stellar evolution theory
Gregory A. Feiden
Physics , 2015,
Abstract: Stellar fundamental properties (masses, radii, effective temperatures) can be extracted from observations of eclipsing binary systems with remarkable precision, often better than 2%. Such precise measurements afford us the opportunity to confront the validity of basic predictions of stellar evolution theory, such as the mass-radius relationship. A brief historical overview of confrontations between stellar models and data from eclipsing binaries is given, highlighting key results and physical insight that have led directly to our present understanding. The current paradigm that standard stellar evolution theory is insufficient to describe the most basic relation, that of a star's mass to its radius, along the main sequence is then described. Departures of theoretical expectations from empirical data, however, provide a rich opportunity to explore various physical solutions, improving our understanding of important stellar astrophysical processes.
Stellar Evolution Models of Young Stars: Progress and Limitations
Gregory A. Feiden
Physics , 2015,
Abstract: Stellar evolution models are a cornerstone of young star astrophysics, which necessitates that they yield accurate and reliable predictions of stellar properties. Here, I review the current performance of stellar evolution models against young astrophysical benchmarks and highlight recent progress incorporating non-standard physics, such as magnetic field and starspots, to explain observed deficiencies. While addition of these physical processes leads to improved agreement between models and observations, there are several fundamental limitations in our understanding about how these physical processes operate. These limitations inhibit our ability to form a coherent picture of the essential physics needed to accurately compute young stellar models, but provide rich avenues for further exploration.
The G+M eclipsing binary V530 Orionis: A stringent test of magnetic stellar evolution models for low-mass stars
G. Torres,C. H. Sandberg Lacy,K. Pavlovski,G. A. Feiden,J. A. Sabby,H. Bruntt,J. V. Clausen
Physics , 2014, DOI: 10.1088/0004-637X/797/1/31
Abstract: We report extensive photometric and spectroscopic observations of the 6.1-day period, G+M-type detached double-lined eclipsing binary V530 Ori, an important new benchmark system for testing stellar evolution models for low-mass stars. We determine accurate masses and radii for the components with errors of 0.7% and 1.3%, as follows: M(A) = 1.0038 +/- 0.0066 M(sun), M(B) = 0.5955 +/- 0.0022 M(sun), R(A) = 0.980 +/- 0.013 R(sun), and R(B) = 0.5873 +/- 0.0067 R(sun). The effective temperatures are 5890 +/- 100 K (G1V) and 3880 +/- 120 K (M1V), respectively. A detailed chemical analysis probing more than 20 elements in the primary spectrum shows the system to have a slightly subsolar abundance, with [Fe/H] = -0.12 +/- 0.08. A comparison with theory reveals that standard models underpredict the radius and overpredict the temperature of the secondary, as has been found previously for other M dwarfs. On the other hand, models from the Dartmouth series incorporating magnetic fields are able to match the observations of the secondary star at the same age as the primary (3 Gyr) with a surface field strength of 2.1 +/- 0.4 kG when using a rotational dynamo prescription, or 1.3 +/- 0.4 kG with a turbulent dynamo approach, not far from our empirical estimate for this star of 0.83 +/- 0.65 kG. The observations are most consistent with magnetic fields playing only a small role in changing the global properties of the primary. The V530 Ori system thus provides an important demonstration that recent advances in modeling appear to be on the right track to explain the long-standing problem of radius inflation and temperature suppression in low-mass stars.
A study on speech rate as a prosodic feature in spontaneous narrative
Oliveira Júnior, Miguel;
Alfa : Revista de Linguística (S?o José do Rio Preto) , 2012, DOI: 10.1590/S1981-57942012000200012
Abstract: speech rate is examined in this paper as a prosodic feature employed in the signaling of spontaneous narrative structure. assuming that narratives have a structural system in itself, and that interactants mark their moves and their more global activities in order to make them unambiguous (jefferson, 1978; sacks, 1972), the present paper examines speech rate phenomena, from an acoustic-experimental approach, in 17 spontaneous narratives, using one of the most influential models for narrative analysis - the labovian evaluative model (labov, 1972) - as framework for the analysis. the prosodic variable under investigation is analyzed on two different levels: at specific points in the narratives corresponding to section boundaries (local level), and within different sections in the narratives as a whole (global level). the results indicate that speech rate operates exclusively on the global level, by generating a cyclical pattern of varying rates corresponding to the individual, linear sections that make up narrative texts. speech rate does not characterize narrative sections and is not manipulated on the local level in order to mark narrative boundaries.
Recent changes in Clostridium difficile infection
Silva Júnior, Moacyr;
Einstein (S?o Paulo) , 2012, DOI: 10.1590/S1679-45082012000100023
Abstract: clostridium difficile is the main cause of nosocomial diarrhea. diarrhea associated with c. difficile has increased incidence, morbidity, and mortality in the last few years. the major related risk factors include use of antibiotics, elderly patients and prolonged hospital stay. many patients receive combinations of antibiotics or multiple antibiotics, which represents the main risk to develop diarrhea associated to c. difficile or its recurrence. therefore, interventions to improve antibiotic prescribing, as well as compliance with infection control measures can reduce hospital-acquired c. difficile infections. this review addresses the epidemiological changes in c. difficile disease and its treatment.
Sobre Ischnoplax pectinatus (Sowerby, 1840) e sua ocorrência no litoral sul do Brasil (Mollusca, Polyplacophora)
Guerra Júnior, Orlando;
Memórias do Instituto Oswaldo Cruz , 1985, DOI: 10.1590/S0074-02761985000400004
Abstract: new geographic records of ischnoplax pectinatus (sowerby, 1840) are pointed out on the south coast of brazil; its morphology and some biogeographic aspects are also studied.
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