Consulta: subjectFacets:"Fixation"
Registros recuperados: 10
Data/hora: 03/06/2024 11:26:26

Estratégias para aumentar a eficiência de inoculantes microbianos na cultura da soja.
Provedor de dados: 14
Autores: MERCANTE, F. M.; HUNGRIA, M.; MENDES, I. de C.; REIS JUNIOR, F. B. dos.
Inoculação em áreas de primeiro cultivo de soja. Inoculação em áreas tradicionais de cultivo com soja. Tratamento das sementes com fungicidas x inoculação de rizóbios. Aplicação dos micronutrientes cobalto (Co) e molibdênio (Mo). Adubação nitrogenada x fixação de N. Adubação nitrogenada x fixação de N. Sistemas de manejo da cultura. Uso de substância adesiva para inoculante turfoso. Rendimento médio de grãos de soja considerando 29 ensaios conduzidos em oito estados brasileiros, em solos tradicionalmente cultivados com soja e contendo 103 a 106 células de rizóbio/g solo. Ganho de rendimento de grãos de soja reinoculada com Bradyrhizobium em solos com população estabelecida, acima de 104 células/g solo, utilizando-se diferentes cultivares. Dourados, MS.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Fixação biológica; Soybean; Inoculant; Fixation; Biological.; Inoculante; Microbiologia do Solo; Nitrogênio; Soja.; Nitrogen.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/911982

Testing the effectiveness of tough resin systems for improving structural performance of joints in GRP ships.
Provedor de dados: 5
Autores: Norwood, L; Caulier, C.
A major concern in any composite structure is its ability to resist peel and shear loading; this becomes a more difficult problem where long delays in laminating have occurred or when dissimilar materials are joined together. In the case of mine countermeasure vessels, adhesion between stiffener and hull becomes critical when the ship is subjected to underwater shock loading. In order to reduce costs and improve the hull-stiffener bond, tough resin systems based on urethane acrylates have been developed to replace the mechanical crack-stopping system currently employed. This paper describes the benefits of urethane acrylates in the frame-hull application discussing the level of improvement over the mechanical system.
Tipo: Text
Palavras-chave: Ships; Adhesion; Joints; Shear; Ship technology; Glass reinforced plastics; Materials testing; Composite materials; Urethane acrylate; Raidisseur; Coque; Fixation; Joint.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1043.pdf

Glacial-interglacial modulation of the marine nitrogen cycle by high-latitude O-2 supply to the global thermocline
Provedor de dados: 5
Autores: Galbraith, Ed; Kienast, M; Pedersen, Tf; Calvert, Se.
An analysis of sedimentary nitrogen isotope records compiled from widely distributed marine environments emphasizes the global synchrony of denitrification changes and provides evidence for a strong temporal coupling of these variations to changes in nitrogen fixation as previously inferred. We explain the global coherence of these records by a simple physical control on the flux of dissolved oxygen to suboxic zones and the coupling to fixation via the supply of phosphorus to diazotrophs in suitable environments. According to our hypothesis, lower glacial-stage sea surface temperature increased oxygen solubility, while stronger winds in high-latitude regions enhanced the rate of thermocline ventilation. The resultant colder, rapidly flushed thermocline...
Tipo: Text
Palavras-chave: Isotopes; Fixation; Denitrification.
Ano: 2004
URL: https://archimer.ifremer.fr/doc/00229/34026/32421.pdf

Adaptation de la technique du télécaptage de l'huître creuse (Crassostrea gigas) aux conditions d'élevage de la Baie de Bourgneuf
Provedor de dados: 5
Autores: Baud, Jean-pierre; Jolly, Christian.
Pour améliorer la rotation des cheptels et les conditions d'élevage des huîtres sur estran, des expérimentations ont été réalisées afin de définir les conditions optimales du télécaptage. Afin de limiter les fluctuations de captage du milieu naturel et la répartition hétérogène des huîtres sur les collecteurs, l'effort principal de recherche dans cette étude a porté sur l'homogénéisation spatiale du naissain sur la périphérie des tubes plastiques. Différents plans d'expérience ont permis de proposer les conditions suivantes pour une meilleure répartition: - Disposition horizontale de la distribution des larves à raison de 50 % le premier jour et 50 % le 2ème jour, l'ensemble des collecteurs étant retourné entre ces deux jours. Pour l'obtention d'huîtres...
Tipo: Text
Palavras-chave: Crassostrea gigas; Télécaptage; Baie de Bourgneuf; Fixation; Naissain; Huître creuse.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00048/15884/13306.pdf

HLiN. Huı̂tres du Littoral Normand. Ponte, Dispersion, Recrutement et Colonisation des huı̂tres sauvages sur l’Ouest Cotentin : un réseau de suivi pour le littoral normand. Etude de cas 2013
Provedor de dados: 5
Autores: Pien, Sebastien; Maheux, Frank; Dedieu, Karine; Le Gendre, Romain; Simon, Benjamin; Gauquelin, Thibaut.
Depuis 2010, le programme HLiN s’attache à suivre la colonisation et le recrutement des huîtres naturelles sur les côtes du département de la Manche. Après une période d’adaptation des protocoles à la réalité normande, il s’est posé la question de l’origine du recrutement des huîtres, notamment pour la côte ouest du Cotentin, entre les falaises de Champeaux et Saint Germain / Ay. Suite à ses travaux sur la dérive larvaire des moules de pêche en baie de Seine, le LERN de Port en Bessin avait mis au point un modèle de courantologie en 3 dimensions appelé NORM (issu du code MARS 3D). L’idée était d’appliquer la méthodologie de calage du modèle pour le golfe normand breton afin de simuler différents scénarios de ponte et de les corréler avec les observations...
Tipo: Text
Palavras-chave: Colonisation huîtres sauvages; Crassostrea Gigas; Ponte; Dispersion larvaire; Fixation; Connectivité; Réseau de suivi.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00250/36151/34705.pdf

Suivi de l'émission de larves et de la fixation du naissain des huîtres creuses Crassostrea gigas en baie de Bourgneuf durant l'été 2004
Provedor de dados: 5
Autores: Martin, Jean-louis; Haure, Joel; Dupuy, Beatrice; Nourry, Max; Palvadeau, Hubert; Papin, Mathias; Penisson, Christian; Thouard, Emmanuel.
L'ostréiculture en baie de Bourgneuf connaît depuis quelques années des difficultés qui sont liées à de mauvaises performances de croissance des huîtres mais aussi à une augmentation significative du captage naturel de naissain qui recouvre non seulement les zones de roches mais aussi les infrastructures d'élevage et le cheptel proprement dit. Les études menées depuis 2001 (Haure et al., 2002 ; Barillé et al., 2003 ; Martin et al., 2003 ; Martin et al, sous presse) sur les estimations de stocks d'huîtres dans la baie de Bourgneuf montrent l'importance quantitative des huîtres sauvages par rapport aux huîtres cultivées : le stock d'huîtres sauvages représente plus de la moitié des huîtres cultivées. Il est à la fois la conséquence de la recrudescence du...
Tipo: Text
Palavras-chave: Huître creuse; Crassostrea gigas; Émission de larves; Fixation; Baie de Bourgneuf.
Ano: 2004
URL: https://archimer.ifremer.fr/doc/00680/79234/81749.pdf

Preservation of Haemal Nodes Fixed by Means of Two Different Aldehyde Fixatives: a Scanning Electron Microscopic Study
Provedor de dados: 77
Autores: Guerrero,F; Cerutti,P; Marcaccini,A.
Glutaraldehyde is the fixative most commonly used in electron microscope studies of biological tissues, however it is often necessary to use samples which were not fixed in this fixative, even with the usual uncertainty of the results that may be obtained. The fixation is the more delicate step of the sample processing. Therefore in this work, the quality of preservation of haemal nodes fixed with two classic aldehyde fixatives: formaldehyde and glutaraldehyde we have compared under the scanning electron microscope. Our results showed that both fixatives were successful in preserving the morphology of haemal nodes components; however glutaraldehyde conferred satisfactory results mainly in the preservation of parenchymal cells, whereas formaldehyde was...
Tipo: Journal article
Palavras-chave: Scanning electron microscopy; Fixation; Fixative; Haemal node; Glutaraldehyde; Formaldehyde.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000200059

Microwave Fixation in Rat Fetuses Tissues: Histological and Immunohistochemical Analysis
Provedor de dados: 77
Autores: Pitol,Dimitrius Leonardo; Mardegan Issa,João Paulo Mardegan; Camacho,Eduardo; Wolga,Nilce de Oliveira; Caetano,Flávio Henrique; Lunardi,Laurelúcia Orive.
The aim of this study was to show the microwaves action in fixation of rat fetuses, dermal and cartilaginous tissues, using histological and immunohistochemistry methods for analysis. It was possible to conclude in this study using the rat as experimental model that the two methods for antibody retrieval, presented an excellent ways for the use of Ki67 antibody in the immunohistochemical analysis
Tipo: Journal article
Palavras-chave: Microwave; Rat; Histological and immunohistochemical analysis; Fixation.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400005

Foundational errors in the Neutral and Nearly-Neutral theories of evolution in relation to the Synthetic Theory: Is a new evolutionary paradigm necessary?
Provedor de dados: 48
Autores: Valenzuela,Carlos Y.
The Neutral Theory of Evolution (NTE) proposes mutation and random genetic drift as the most important evolutionary factors. The most conspicuous feature of evolution is the genomic stability during paleontological eras and lack of variation among taxa; 98% or more of nucleotide sites are monomorphic within a species. NTE explains this homology by random fixation of neutral bases and negative selection (purifying selection) that does not contribute either to evolution or polymorphisms. Purifying selection is insufficient to account for this evolutionary feature and the Nearly-Neutral Theory of Evolution (N-NTE) included negative selection with coefficients as low as mutation rate. These NTE and N-NTE propositions are thermodynamically (tendency to random...
Tipo: Journal article
Palavras-chave: Fixation; Loss; Neutral evolution; Polymorphism; Randomness; Selectiveness.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000200001

Carbon Dioxide Biofixation and Production of Spirulina sp. LEB 18 Biomass with Different Concentrations of NaNO3 and NaCl
Provedor de dados: 52
Autores: Moraes,Luiza; Rosa,Gabriel Martins da; Souza,Michele da Rosa Andrade Zimmermann de; Costa,Jorge Alberto Vieira.
ABSTRACT Microalgae are efficient at using solar energy to turn CO2 and nutrients into biomass containing lipids, proteins, carbohydrates and other compounds that may be used to produce bioproducts for human and animal consumption and pharmaceutical use. The aim of this study was to assess the effect of the NaNO3 and NaCl concentration on the growth kinetics, the biomass composition and the ability to biofix CO2 using the microalga Spirulina sp. LEB 18. The assays were carried out according to a 22 central composite design (CCD) with different concentrations of NaNO3 (1.25, 1.88 and 2.50 g L-1) and NaCl (1.00, 15.0 and 30.0 g L-1). The assays were carried out in 2 L vertical tubular photobioreactors at 30°C, 12 h light/dark and an injection of 12.0% v/v of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CO2; Fixation; Growth kinetics; Microalgae; Nutrients.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100410