Aplicação de modelos matemáticos de crescimento de microestrutura ao estudo do crescimento de grãos em filmes de Al nanoestruturados
51 f.
Materials Literature
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Effect of the surface treatment and repressing level on the mechanical properties of a pressable ceramic system
Orientação Prof. Dr. Leonardo Gonçalves Cunha
Effect of the content of Molybdenum in the microstructure of Fe-9Cr-xMo Alloy
Cr-Mo steels are used in the petroleum industry in applications with crude oils rich in sulfur compounds. 2.5Cr1Mo or 9Cr1Mo do not resist to operating conditions when in contact with crude oils. The increasing of molybdenum content can improve the corrosion resistance of these alloys. This paper studied the effect of…
Potássio, cálcio e magnésio.
Resumo. Introdução. Disponibilidade de potássio, cálcio e magnésio nos solos brasileiros. Dinâmica de potássio, cálcio e magnésio em sistemas agrícolas tropicais. Reservas de potássio, cálcio e magnésio na forma não-trocável e na forma estrutural nos solos brasileiros. Teores de potássio, cálcio e magnésio na forma ex…
Induction of resistance in potato and its effect on predatory and defoliator Coleoptera
The South American Rootworm, Diabrotica speciosa (Germar, 1824) (Coleoptera: Chrysomelidae), is the key pest of the English potato culture because it causes economic damage due to the injuries their larvae cause to the tubers. The objective of this work was to evaluate the effects of silicic acid, acibenzolar-s-methyl…
Effects of shrimp peel, fish hydrolyzate and chitosan on control of Fusarium oxysporum f. sp. chrysanthemi wilt of chrysanthemum
The incorporation of shrimp peelings and fish hydrolyzate into a pine-bark container medium and an aerial spray of chitosan were investigated for the control of Fusarium wilt of chrysanthemum. Disease severity was evaluated by means of a six-category scale (0 - healthy plant to 5 - dead plant) at 8, 12, 15 and 20 week…
Vidro de spin fermiônico com clusters em campo transverso
Este trabalho apresenta um modelo fermiônico de vidro de spin de Ising com formação de clusters na presença de um campo magnético transverso T. Esse modelo quântico considera interações de troca entre momentos magnéticos de clusters distintos (interações inter-cluster), que são dadas por variáveis aleatórias que obede…
Structure of the periphytic algal community in distinct natural substrates from the Paraná River floodplain, Brazil.
Structure of periphytic algae community in different natural substrates (Eichhornia azurea Kunth, Nymphaea amazonum Martius and Zuccarini and Oxycaryum cubense (Poeppig and Kunth) Lye) was analysed in a semilotic environment permanently connected to the Paraná River, from the Upper Paraná River floodplain. Samples wer…
Síntese e caracterização de perovskitas do tipo TR(FexV1-x)O3(TR=La - Er,Y)
Metastable perovskites of the TR(FexV1-xO3) type (with TR = La - Er, Y) were synthesized by rapid solidification and characterized structurally, magnetically and regarding the hyperline properties by X-ray diffraction, transmission electron microscopy, magnetometry and Mössbauer spectroscopy. These solid solutions cry…
Argilominerais 2:1 com hidróxi-al e atributos químicos de um latossolo Bruno subtropical sob sistemas de plantio direto e convencional
O sistema de plantio direto (SPD) representa uma interferência importante no sistema solo, sendo pequeno o conhecimento existente sobre sua influência na mineralogia de solos tropicais e subtropicais. Este estudo foi realizado em experimento de campo e teve por objetivo avaliar o efeito da utilização do SPD, por 26 an…
Study of application of azoles in the corrosion inhibition of ABNT 430 SS in acidic media
(Mestrado em Química) - Programa de Pós Graduação em Química, Universidade Estadual do Centro-Oeste
Influência do contéudo mineral do seston em cladóceros tropicais de uma lagoa marginal
Bioassays were carried out seasonally to evaluate individual growth and reproduction of cladocerans, from a marginal lake, with the addition of nitrogen (N), phosphorus (P), and both N and P to natural seston; Methods: Cohorts originated from cultivated females were submitted to the following treatments: 1) lake sesto…
Investigação do estado de oxidação dos íons európio e titânio incorporados na matriz vítrea aluminosilicato de cálcio
In this work, we investigated the influence of the composition of calcium aluminosilicate glass on the formation of different oxidation states of rare earth europium (Eu) and transition metal titanium (Ti), embedded in glasses with doping oxides Eu2O3 and TiO2. Two sets of samples with different compositions were prep…
Oxidação parcial direta de metano a metanol com o uso de complexos piperazínicos de ferro(III)
In this work it was synthesized six mononucleous Fe(III) pyperazine-derived complexes, both in its free form and as encapsulated form in zeolite Y made by flexible ligand methodology called "ship in a bottle". Also were tested the reproducibility of the methodology synthesizing complexes in triplicate and making a mec…
Gmaw welding overlay of nickel-based alloys for applications in oil and natural gas components
The weld overlay of nickel-based alloys is an alternative often used in oil and gas industry to prevent corrosion in pipes and equipments operating under severe conditions. In many situations the requirements of weld overlays are based in a maximum of 5% iron content in the weld metal to ensure corrosion resistance. T…
Biochemical Aspects of Herbivory of Danaus plexippus (L.) on leaves Calotropis procera (Ait.) R.Br.
Evidence has been accumulated supporting the role of latex in protecting plants against different aggressors; however it is known that milkweeds are heavily attacked by monarch butterfly, including Calotropis procera. The present study describes the proteolytic activity related to the herbivory of 5th instars of the m…
Journal of Chemical and Engineering
Acesso Aberto
Conductancia in nanowires of magnetic diluited
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Polyacrylamide hydrogels and bentonite: synthesis, characterization and application in agriculture
ALMEIDA NETO, Manoel Prudente de. Hidrogéis de poliacrilamida e bentonita: síntese, caracterização e aplicação na agricultura. 2010. 129 f. Tese (Doutorado em Química)-Universidade Federal do Ceará, Fortaleza, 2010.
The influence of the methodological variables on the shear bond strength
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