Mixed And Dense
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. PLANT RICHNESS AND LIFE FORM DIVERSITY ALONG VEGETATION AND FOREST USE GRADIENTS IN NORTHWESTERN PATAGONIA OF ARGENTINA
ABSTRACT The imbalace between the increase in the demand and the decrease in the supply of products from natural forests, partly explains the on-going development of exotic tree plantations. In northwestern Patagonia of Argentina, Pinus ponderosa (Pinaceae) afforestation plays a key role in ameliorate degraded soils, but may also reduce biodiversity. The eco
CERNE. Publicado em: 20/12/2019
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2. Phase and microstructural analysis of NdTi0.8M0.2O3.4 (M = Al, Ga) microwave ceramics
ABSTRACT In this paper, we report the characterization of NdTi0.8M0.2O3.4 (M = Ga, Al) ceramics prepared via mixed oxide solid state sintering route. X-ray diffraction analysis of the samples revealed the formation of single phase for NdTi0.8Ga0.2O3.4 sample while secondary phase was formed in the case of NdTi0.8Al0.2O3.4. Microstructural analysis of the sam
Matéria (Rio J.). Publicado em: 25/11/2019
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3. Verbenaceae no Parque Estadual da Serra do Papagaio, Minas Gerais, Brasil
Resumo O Parque Estadual da Serra do Papagaio está localizado no sul de Minas Gerais, e faz parte do Complexo da Serra da Mantiqueira, com vegetação representada por campos de altitude, floresta ombrófila densa e floresta ombrófila mista. O presente estudo teve como objetivo realizar um tratamento florístico para Verbenaceae nesta Unidade de Conservaç
Rodriguésia. Publicado em: 03/10/2019
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4. Estudo de obtenção da membrana cerâmica densa BaCeO3
RESUMO Nos últimos anos, pós cerâmicos à base de óxidos de estrutura do tipo perovskita ganharam atenção considerável devido às suas aplicações tecnológicas na área de membranas permeáveis de oxigênio. O óxido misto BaCeO3 apesenta-se como um material amplamente estudado em uma grande diversidade de aplicações, seja como materiais eletrolí
Matéria (Rio J.). Publicado em: 20/05/2019
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5. Reduced-order strategy for meshless solution of plate bending problems with the generalized finite difference method
Abstract This paper presents some recent advances on the numerical solution of the classical Germain-Lagrange equation for plate bending of thin elastic plates. A meshless strategy using the Generalized Finite Difference Method (GFDM) is proposed upon substitution of the original fourth-order differential equation by a system composed of two second-order par
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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6. Occurrence of homobaric and heterobaric leaves in two forest types of southern Brazil
ABSTRACT In ombrophilous forests, light stratification provokes different adjustments by plants for better use of the environmental conditions of each stratum. Among the morphological traits that vary with strata, the presence of bundle sheath extensions (BSEs) is related to water transport, photosynthesis, and leaf mechanical support and classifies leaves a
Acta Bot. Bras.. Publicado em: 2016-06
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7. Membranas de condução mista iônica e eletrônica (miec): composições, preparação e desempenho
This paper presents a review of different chemical compositions that are used in the production of mixed ionic-electronic conducting membranes with the perovskite structure. In these dense membranes, oxygen from the air is permeated through ionic and electronic processes, and high oxygen permeation fluxes are observed at high temperatures (800-900 ºC). Vari
Quím. Nova. Publicado em: 2014-04
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8. Síntese de manganita dopada com estrôncio e cobaltita dopada com antimônio e caracterização microestrutural
The great variety of properties of oxides with the perovskite structure allows their application in several fields of technology. Specially, the electrochemical properties and the thermal stability of some of these compounds make these materials the most used in devices for energy generation such as the solid oxide fuel cells (SOFC). SOFC¿s are devices the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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9. Método de dosagem de concreto pelo volume de pasta com emprego de cinza volante / Concrete mix-proportioning method by cement paste volume using fly ash
This study was developed in order to create and a streamlined methodology of concrete mix proportioning using fly ash to reduce the cement content and an intensive use of a pollutant contributing to the increase of sustainability in construction through reducing consumption of clínquer and the release of carbono dioxide to the atmosphere. It was established
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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10. Fenología reproductiva y productividad de Oenocarpus bataua (Mart.) en bosques inundables del Chocó Biogeográfico, Colombia
Oenocarpus bataua (Mart.) is a palm species forming highly dense stands in flooded forests of the Chocó Biogeographic region. This species is considered promising because its fruits contain protein and high quality oil; therefore, periodic harvests of fruits are a potential source of food and income to local communities and could contribute to improve their
Biota Neotropica. Publicado em: 2010-12
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11. Structure of the tree community in stands of Araucaria forests, in São Paulo state, Brazil / Estrutura da comunidade arbórea de trechos de florestas de Araucaria no estado de São Paulo, Brasil
The Ombrophilous Mixed Forest covered an ample area in the South and in part of the Southeast of Brazil. Since the 2Oth century, the increase of anthropic intervention has put the ecosystem in a critically threatened category and the Araucaria angustifolia (Bert.) O. Kuntze, the typical species of this ecosystem, in extinction prone. The goal of the present
Publicado em: 2009
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12. COMPARAÇÃO DE PROCEDIMENTOS PARA A INTEGRAÇÃO DE LEVANTAMENTOS TOPOGRÁFICOS E LEVANTAMENTOS COM GPS / COMPARISON OF PROCEDURES FOR THE INTEGRATION OF TOPOGRAPHICAL SURVEYS AND GPS SURVEYS
The georeferencing consists of the description of the rural property, characteristics and confrontations, of descriptive memorial containing the border coordinates, georeferenced to the Brazilian Geodetic System following the positioning precision defined by INCRA. The perimeter survey of a rural property can be done only using GPS receivers, or only with to
Publicado em: 2009