Heartwood
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. Effect of stem height in variation of bark, heartwood, sapwood and physical properties of wood in Dipteryx panamensis Pittier in a provenance/progeny test
RESUMO A madeira de Dipteryx panamensis é usada no reflorestamento na Costa Rica, tendo um programa de melhoramento genético iniciado recentemente no país. O objetivo do presente estudo foi estudar o efeito da altura do tronco das árvores na variação de casca, alburno, cerne, densidade verde (GD), densidade básica (SG) e teor de umidade na condição
Ciência Florestal. Publicado em: 2022
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2. Capital, ideologia e uma história do mundo sob o prisma da desigualdade
The phytochemical reinvestigation from the heartwood of the extracts of Cordia glazioviana led to the isolation of four still undescribed hydroquinones derivatives designated as cordiaquinol D (1), cordiaquinol E (2), (10R)-10,11-dihydrofuran-1,4-dihydroxy-globiferin (3) and 2-[(1’E,6’E)-3’,8’- dihydroxy-3’,7’-dimethylocta-1’,6’-dienyl]-benze
Econ. soc.. Publicado em: 2021-07
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3. Anti-Inflammatory Meroterpenoids of Cordia glazioviana (Boraginaceae)
The phytochemical reinvestigation from the heartwood of the extracts of Cordia glazioviana led to the isolation of four still undescribed hydroquinones derivatives designated as cordiaquinol D (1), cordiaquinol E (2), (10R)-10,11-dihydrofuran-1,4-dihydroxy-globiferin (3) and 2-[(1’E,6’E)-3’,8’- dihydroxy-3’,7’-dimethylocta-1’,6’-dienyl]-benze
J. Braz. Chem. Soc.. Publicado em: 2021-07
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4. CHARACTERIZATION OF INJURY CAUSED BY Coptotermes testaceus IN Tectona grandis PLANTATIONS IN BRAZIL
ABSTRACT Coptotermes testaceus (Linnaeus, 1758) is the most important species of heartwood termite of adult trees in forests planted in Brazil. This study aimed to characterize the injuries promoted by the heartwood termite C. testaceus in Tectona grandis commercial stands. Tree bark with extend carton material on the outside, forming external galleries and
CERNE. Publicado em: 2020-09
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5. Phytochemical Analysis, Multi-Element Composition and Biological Activities of Extracts and Lupenone from Albizia inundata (Mart.) Barneby & J.W.Grimes
In this study, antimicrobial activity of extracts and lupenone from A. inundata (Fabaceae, Mimosoideae), were tested. In addition, the multi-element composition of the leaves, bark and stems (heartwood) of A. inundata was evaluated using inductively coupled plasma optical emission spectrometry (ICP OES). Lupenone was isolated in the petroleum ether extract o
J. Braz. Chem. Soc.. Publicado em: 2020-09
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6. New Limonoids from Dictyoloma vandellianum and Sohnreyia excelsa: Chemosystematic Considerations
Molecular phylogenetic studies separated and united a group of genera that constituted the Spathelia-Ptaeroxylon clade, in which Dictyoloma and Sohnreyia have been included. Our taxonomic interest in the Dictyoloma vandellianum and Sohnreyia excelsa stimulated an investigation of both species searching for limonoids. Leaves from D. vandellianum afforded the
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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7. INFLUENCE OF TIME AND HEAT TREATMENT TEMPERATURE ON PERMEABILITY OF Eucalyptus grandis WOOD
RESUMO Devido ao fato de a madeira in natura possuir características de permeabilidade inadequadas para algumas aplicações, diversas técnicas de processamento foram desenvolvidas, como tratamentos hidrotérmicos e congelamento, que visam melhorar essas propriedades. O objetivo deste estudo foi analisar os efeitos do tempo e da temperatura de tratamento n
Rev. Árvore. Publicado em: 07/10/2019
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8. Environmental Effect on Growth and Characteristics of Eucalyptus Wood
ABSTRACT The objective of this work was to evaluate environmental effect on growth, wood basic density and anatomical characteristics of Eucalyptus grandis × Eucalyptus urophylla clones for pulp production. The studied clones were from 6.5-year-old plantations of Fibria Celulose company, located in two places: Nova Almeida (ES) and Posto da Mata (BA). The t
Floresta Ambient.. Publicado em: 29/07/2019
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9. First Report of Heterotermes longiceps (Blattodea: Rhinotermitidae) Termite in Teak Plantations
ABSTRACT Heterotermes longiceps termites was observed causing injuries in Tectona grandis plants in a forest plantation in Cáceres, Mato Grosso, Brazil. H. longiceps caused galleries below the bark, at the heartwood-sapwood interface, from the beginning of the root until approximately 1 m height tall and very infested plants has died. This is the first repo
Floresta Ambient.. Publicado em: 15/07/2019
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10. Occurrence of Tectona grandis Stem Injury Caused by Cornitermes cumulans Termite
ABSTRACT Termites of the species Cornitermes cumulans (Kollar, 1832) were observed causing injuries in the stem of Tectona grandis in commercial forest plantations in Cáceres, Mato Grosso state, Brazil. C. cumulans forms galleries below the bark, at the heartwood/sap-wood interface of 1.8 years-old trees. This is the first occurrence of this type of injury
Floresta Ambient.. Publicado em: 15/07/2019
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11. Longitudinal and Transverse Variation in the Physical Properties of Wood Red Tauari
ABSTRACT The objective of this work was to study the fiber length variation, retractability and basic density, in the core-bark direction and along the heig of the red tauari wood (Cariniana micrantha Ducke). The stem was evaluated in the discs, from core to bark, corresponding to 0%, 25%, 50%, 75% and 100%. At the commercial height of the tree the evaluatio
Floresta Ambient.. Publicado em: 15/07/2019
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12. Deterioration of Teak Wood in Accelerated Decay Test
ABSTRACT The present study aimed to evaluate the biological resistance of teak (Tectona grandis) heartwood and sapwood to the action of Trametes versicolor and Gloeophyllum trabeum fungi in laboratory accelerated decay assays. The mass loss evaluation of the samples was performed periodically. The heartwood presented a higher percentage of extractives and th
Floresta Ambient.. Publicado em: 02/05/2019