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Screening of rust and gall wasp in eucalypts species and provenances PFB - Pesquisa Florestal Brasileira
Silva, Paulo Henrique Müller da; Paula, Rinaldo Cesar de; Miranda, Aline Cristina; Moraes, Mario Luiz Teixeira de; Furtado, Edson Luiz; Pieri, Cristiane de; Branwer, Jeremy; Lee, David.
The present study investigated myrtle rust and gall wasp from non-commercial eucalypt taxa with potential to hybridization. We selected 38 genotypes from 18 species of Corymbia and Eucalyptus (Symphyomyrtus) genus. Two rust inoculations were evaluated using inoculums from rose apple and eucalypt, and natural gall occurrence in a high pest infestation condition. Corymbia was more susceptible to rust than Eucalyptus genus, and it was observed severity variation due to the sources of rust inoculum. Species that belong to Exsertaria and Transversaria (Latoangulatae) sections were more susceptible to gall wasp, and Corymbia species showed no development of gall.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Melhoramento; Proteção Florestal Eucalyptus; Corymbia; Susceptibility; Puccinia psidii; Leptocybe invasa Eucalyptus; Corymbia; Suscetibilidade; Puccinia psidii; Leptocybe invasa.
Ano: 2015 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/746
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Occurrence of Leptocybe invasa (Hymenoptera: Eulophidae) in eucalyptus seedlings in the State of Parana, Brazil PFB - Pesquisa Florestal Brasileira
Rinaldi, Dilerne Aparecida Moreno da Fonseca; Barbosa, Leonardo Rodrigues; Wilcken, Carlos Frederico; Zaché, Bruno; Araújo, Marcílio Martins; Carvalho, Regina Célia Zonta de.
It was recorded for the first time the occurrence of Leptocybe invasa Fisher & La Salle, 2004 (Hymenoptera: Eulophidae) in eucalyptus in the State of Parana, Brazil. Infested seedlings of Eucalyptus camaldulensis were observed in December 2011 in Maringá, County.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus gall wasp; Forestry pest; Eucalyptus Proteção Florestal; Entomologia Vespa-de-galha; Praga florestal; Eucalyptus.
Ano: 2013 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/400
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Recuperação de Áreas Degradadas PFB - Pesquisa Florestal Brasileira
Mattos, Patrícia Póvoa de.
Tipo: Info:eu-repo/semantics/article
Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/178
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Propagação vegetativa de Bambusa vulgaris PFB - Pesquisa Florestal Brasileira
Braga, Rafael Malfitano; Santos, Karina Rodrigues; Molina, Raul Alberto Rico; Nieri, Erick Martins; Melo, Lucas Amaral de.
O bambu é fonte importante de matéria prima para o uso de múltiplos usos. O desenvolvimento de técnicas simples para sua propagação é uma forma prática de possibilitar sua própria implementação em propriedade de pequena tecnologia. O presente trabalho teve por objetivo avaliar métodos de propagação artesanais para Bambusa vulgaris . Foram testados dois tipos de propágulos, com gemas brotadas ou não, e três áreas relacionadas com a retirada de material vegetativo no colmo. O melhor propágulo foi com apenas um nó, retirado dos terços inferiores do colmo, apresentando 72% de enraizamento. Este resultado demonstra seu potencial para uma produção de mudas desta espécie sob baixa tecnologia.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fitotecnia Colmo; Enraizamento; Mudas de bambu Culm; Rooting; Bamboo seedlings.
Ano: 2017 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1352
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Fungal decomposition of needles in pine plantations PFB - Pesquisa Florestal Brasileira
Auer, Celso Garcia; Ghizelini, Angela Michelato; Pimentel, Ida Chapaval.
A literature review was performed to discuss the fungal decomposition of needle pines and impacts on commercial forest production and sustainability. Aspects as organic matter and litter degradation, associated micobiota, and factors that condition this process are discussed. Needles are principal components of residues in pine forests and their decomposition by fungi is important to nutrient turnover. Nutrients released for soil by decomposition increases forest productivity which promotes more biomass production and fixation of carbon in trees.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological degradation; Conifer; Fungus; Litter Degradação biológica; Fungo; Pinheiro; Serapilheira.
Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/137
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Chemical and mineralogical soil atributes from Comperj area due to variations in lithotype, landscape position and vegetation cover PFB - Pesquisa Florestal Brasileira
Gomes, João Bosco Vasconcellos; Curcio, Gustavo Ribas; Dedecek, Renato Antonio; Ramos, Michele Ribeiro.
Establishing Comperj (petrochemical complex Petrobras and partner companies at Itaboraí city, Rio de Janeiro State, Brazil) involves a great impact on natural environment, while it is an opportunity for actions of environmental compensation. The objectives of this study were to characterize soil chemistry and mineralogy of Comperjarea, based on landscape, particle size distribution and soil morphology, also considering different parent materials, landscape positions (shoulder, backslope and footslope at the hillslope and toeslope at floodplain) and vegetation cover groups. Different landscape positions, comparing toeslope and average hillslope, have differential behavior on several chemical attributes, besides those associated with landscape position...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Secondary forests; Pastures; Rio de Janeiro Caracterização ambiental Florestas secundárias; Pastagens; Rio de Janeiro.
Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/567
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Volumetria de Genipa americana em plantio homogêneo no Sudoeste da Bahia PFB - Pesquisa Florestal Brasileira
Rocha, Mislene Barbosa; Barreto-Garcia, Patrícia Anjos Bittencourt; Prado, Wilmerson Bernardino; Paula, Alessandro de; Júnior, Valdemiro Conceição.
O objetivo deste trabalho foi avaliar estimativas volumétricas para a espécie Genipa americana L., conhecida vulgarmente como jenipapeiro, em plantio puro no município Vitória da Conquista, BA. Foram cubadas rigorosamente 100 árvores em pé para determinação do volume individual. De posse dos dados da cubagem foram ajustados dez modelos volumétricos. Os melhores modelos foram selecionados com base no critério de seleção do valor ponderado dos escores dos parâmetros estatísticos e distribuição de resíduos. As estimativas de volume foram realizadas por fator de forma e por equações ajustadas e os resultados foram comparados ao volume obtido com a cubagem, para validação das estimativas. Dentre os métodos utilizados para predição do volume, o mais recomendado...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Recursos Florestais; Engenharia Florestal; Dendrometria Jenipapo; Modelos volumétricos; Fator de forma Jenipapo; Volumetric models; Form fator.
Ano: 2015 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/862
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Restauração de planícies do rio Itajaí-Açu – SC: sobrevivência e crescimento inicial de espécies arbóreas nativas por tipo de solo PFB - Pesquisa Florestal Brasileira
Pozzobon, Maurício; Curcio, Gustavo Ribas; Uhlmann, Alexandre; Galvão, Franklin; Zimmer, Eduardo.
A variação na expressão dos atributos pedológicos, conjugada com peculiaridades dos processos existentes no ecossistema fluvial, exerce forte influência sobre a distribuição da vegetação nesses ambientes. As estratégias de restauração das florestas fluviais precisam respeitar essas peculiaridades e, neste caso, a escolha de espécies adequadas para iniciar o estabelecimento de uma comunidade funcional representa elemento chave. O presente estudo teve como objetivo avaliar a sobrevivência e o crescimento de nove espécies arbóreas, plantadas em três diferentes densidades e em dois tipos de solos – Neossolo Flúvico (RY) e Cambissolo Flúvico (CY), na planície do rio Itajaí-Açu, SC. As espécies que se apresentaram promissoras para o uso na restauração de...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Restauração ecológica. Florestas fluviais. Rio Itajaí-Açu Restoration ecology; Riparian forests; Itajaí-Açu River.
Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/159
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DNA extraction methodology for genetic analysis of peach palm (Bactris gasipaes Kunth.) populations PFB - Pesquisa Florestal Brasileira
Hamze, Ahmad Abdul Latif; Kalil Filho, Antonio Nascim; Sousa, Valderês Aparecida de; Santos, Álvaro Figueredo dos; Neves, Edinelson José Maciel.
DNA extraction is a very important step for DNA genetic analysis in peach palm (Bactris gasipaes Kunth.). The aim of this work was to develop a methodology of DNA extraction. Fresh, frozen and dried leaves were utilized. DNA from fresh leaves were purified one time while frozen and dried leaves was purified two times. DNA bands were coloured intensively showing a high amount of purified DNA and with an excellent resolution in agarosis gel 2%, such for fresh leaves as much as for frozen and dried leaves.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Heart-palm; Arecaceae; Protocol Palmito; Arecáceas; Protocolo.
Ano: 2003 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1612
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Genetic evaluation of Eucalyptus camaldulensis in Mato Grosso State, Brazil PFB - Pesquisa Florestal Brasileira
Costa, Reginaldo Brito da; Azevedo, Luana Pâmella de Almeida; Martinez, Diego Tyszka; Tsukamoto Filho, Antonio de Arruda; Fernandes, Dayane Ávila; Oliveira, Oacy Eurico de; Resende, Marcos Deon Vilela de.
The study aimed to estimate parameters, values and genetic gain for growth traits in progenies of Eucalyptus camaldulensis, in the State of Mato Grosso. The progenies test was conducted under a randomized block design with 132 progenies, five replications and three plants in single rows, spaced 3 m x 2 m in Santo Antonio do Leverger, MT. At 24 months of age, progenies were evaluated for the characters: a) diameter at base height (DBH), in centimeters, b) total height, in meters, c) survival. The individual in the narrow sense heritability for the traits studied can be considered medium to high magnitude (0.13 and 0.21) for height and diameter, respectively. The heritability for survival were practically nil, due to low genetic variability among the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic variability; Genetic gain; Early selection; Mixed linear model Variabilidade genética; Ganho genético; Seleção precoce; Modelo linear misto.
Ano: 2012 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/337
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Propagation of farinha-seca in vitro PFB - Pesquisa Florestal Brasileira
Rossi, Ediana; Sartoretto, Laudete Maria.
The present study aimed to establish protocols for disinfestation, germination of seeds, as well as the induction of in vitro multi sprouting of farinha-seca (Albizia niopoides) using seeds and nodal segments from seedlings germinated in vitro. To evaluate the disinfestations and germination intervals of 0,10, 20 and 30 minutes of soaking seeds in sodium hypochlorite 8% were tested. The evaluations of contamination by fungi and/or bacteria, as well as the germination of seeds were performed 20 days after the test started. The induction of multi sprouting was performed in WPM culture medium supplemented with BAP at concentration of 0.0, 0.5, 2.5 and 5.0 μM and ANA at a concentration of 0.5 μM. Number of sprouts and callus formation were evaluated. The F...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Disinfestation; Tissue culture; Micropropagation Engenharia Florestal; Genética Vegetal Desinfestação; Cultura de tecidos; Micropropagação.
Ano: 2013 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/361
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Soil Physical and Chemical Attributes and Their Relation to Pinus taeda Growth and Productivity. PFB - Pesquisa Florestal Brasileira
Bellote, Antonio Francisco Jurado; Dedecek, Renato Antonio.
In order to evaluate the effect of soil chemical and physical attributes on the productivity of 20 year-old Pinus taeda stands planted on different soil types and with different growth rates, four sites were selected based on previous inventory, in two municipalities in the State of Paraná. Experimental plots were established on these areas where dominant trees were selected. Data on DBH and height were recorded and stem cross section disks at different heights were collected. Also, soil samples at different depths were collected. Growth variables and tree volumes were analyzed and correlations with soil chemical and physical traits were estimated. The results showed that wood production was influenced mainly by soil physical traits. Of special importance...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil compaction soil fertility wood production thinning Compactação do solo fertilidade do solo produtividade de madeira; Desbaste..
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/203
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Salinity effect on germination and initial growth of seedlings of three forest tree species PFB - Pesquisa Florestal Brasileira
Dutra, Tiago Reis; Massad, Marília Dutra; Moreira, Priscila Ribeiro; Ribeiro, Érika Susan Matos.
The objective of this work was to evaluate the effect of saline stress on germination and initial growth of canafistula (Peltophorum dubium (Sprengel) Taubert), tamboril (Enterolobium contortisiliquum (Vell.) Morong.) and pau-formiga (Triplaris americana L.), in addition to determining the maximum tolerance to the presence of NaCl in imbibitions solution. A completely randomized design with four replicates of 50 seeds was used in factorial scheme 3 x 5. The response of the three species to five levels of osmotic potentials (0.0; -0.3; -0.6; -1.2 e -1.8 MPa) was evaluate, simulating saline stress with NaCl. At 28 days after sowing, germination percentage; germination speed index (GSI); germination time; root length and root shoot s and total dry mass were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Germination speed; Total dry mass; Stress Velocidade de germinação; Massa seca total; Estresse.
Ano: 2017 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1447
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Morphological and production evaluation of Eucalyptus benthamii clonal mini-garden regarding to Zn and B PFB - Pesquisa Florestal Brasileira
Brondani, Gilvano Ebling; Baccarin, Francisco José Benedini; Wit Ondas, Heron Wilhelmus de; Gonçalves, Antônio Natal; Almeida, Marcílio de.
The aim of this study was to evaluate the mini-stumps survival and the mini-cuttings production of Eucalyptus benthamii regarding to Zn and B concentrations during successive collection of shoots. Shoots were collected from mini-stumps (BP101, BP118 and BP120 clones) fertigated with nutrient solutions containing different concentrations of Zn and B (S1 – free of Zn and B, S2 – 0.5 mg L-1 Zn, S3 – 0.5 mg L-1 B, S4 – 0.5 mg L-1 Zn and B, S5 – 1.0 mg L-1 Zn and B, S6 – 2.0 mg L-1 Zn and B). Eight shoot collections of the clonal mini-garden were performed. The mini-stumps survival, mini-cuttings production, leaves number, nodes number, shoots length, internodes interval and visual appearance of mini-stumps to identify symptoms of nutritional deficiency or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nutritive solution Mini-cutting technique Mineral nutrition Fertigation Recursos Florestais; Engenharia Florestal Solução nutritiva Miniestaquia Nutrição mineral Fertirrigação.
Ano: 2012 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/371
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Comparative study of phytosociological structure of two fragments of Caatinga in different levels of conservation PFB - Pesquisa Florestal Brasileira
Calixto Júnior, João Tavares; Drumond, Marcos Antônio.
The objective of this work was the comparison of vegetation structure of two Caatinga fragments with primary and secondary levels of ecological succession, located at Embrapa Semiarido, Petrolina, State of Pernambuco, Brazil. For floristic survey it was used the method of plots, where 10 sampling units of 8 m x 40 m randomly distributed were plotted. All living individuals with diameter at ground level (DGL) ≥ 3 cm were inventoried and also measured their total heights. We observed significant differences in the diametric structure, but the distribution of hypsometric frequency showed that the majority of individuals in both areas were small-sized (< 5 m). Through similarity analysis and principal coordinates, we observed the formation of three distinct...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thorny deciduous vegetation; Phytosociology; Ecological sucession Engenharia Florestal Recursos Floretais Fitossociologia Vegetação caducifólia espinhosa; Fitossociologia; Sucessão ecológica.
Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/670
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The Spanish National Forest Inventory: history, development, challenges and perspectives PFB - Pesquisa Florestal Brasileira
Alberdi, Iciar; Cañellas, Isabel; Vallejo Bombín, Roberto.
It is important to have a statistically robust forest information data base which can be updated and can provide long-term information. National Forest Inventories (NFI) provide one of the best large-scale sources of information, and therefore are a cornerstone of forest policies. The scopes of NFIs, which are the primary source of data for national and large-area assessments, has been broadened to include new variables to meet increasing information requirements. This paper describes the history, methodology and guidance of Spanish NFI and international requirements. The current objectives are determined by analysing future perspectives and possible direction of future assessments. These objectives include harmonization of NFI, open data source and to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Monitoring; Biodiversity; Forest assessment Monitoramento; Biodiversidade; Avaliação da floresta.
Ano: 2017 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1337
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Caracterização energética de pellets in natura e torrificados produzidos com madeira residual de Pinus PFB - Pesquisa Florestal Brasileira
Protásio, Thiago de Paula; Trugilho, Paulo Fernando; de Siqueira, Humberto Fauller; de Melo, Isabel Cristina Nogueira Alves; Andrade, Carlos Rogério; Guimarães Junior, José Benedito.
O objetivo deste estudo foi avaliar pellets torrificados e in natura,produzidos a partir da madeira residual de Pinus, destinados ao uso bioenergético. A compactação da madeira residual de Pinus sp. oriunda de serraria foi realizada em uma peletizadora com matriz plana de 8 mm. As torrefações foram realizadas em forno elétrico, tipo mufla, estabilizado em temperaturas finais de 220 °C e 250 °C por 30 min. Foram determinadas as seguintes propriedades nos pellets: densidades aparente e energética unitárias, densidades a granel e energética do granel, composição química imediata (materiais voláteis, cinzas e carbono fixo), poder calorífico superior e umidade. Observou-se aumento do poder calorífico superior e redução do teor de umidade nos pellets...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Recursos Florestais; Engenharia Florestal; Energia da Biomassa Florestal. Densificação; Tratamento térmico; Biomassa florestal; Energia Densification; Heat treatment; Forestry biomass; Energy.
Ano: 2015 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/843
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Taquara bamboo control as an alternative to recovery of the Araucaria Forest PFB - Pesquisa Florestal Brasileira
Sanquetta, Carlos Roberto.
Native bamboos occur abundantly in forests with predominance of Araucaria angustifolia that werehighly disturbed by anthropogenic causes. The occupation of the competitive space by these plants may indicate that there is a dependency relationship between the establishment of tree seedlings and bamboos in the ecosystem. This study aimed at evaluating the establishment of seedlings of tree species that appeared naturally in an area strongly dominated by bamboos in the understory. An  experiment of mechanical control of bambooswas established in the municipality of General Carneiro, southern Paraná State, with 1.00 hectare, following thecompletely randomized design. The results showed that felling of bamboos may be effective to stimulate theappearance of many...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Araucaria; Bamboo; Natural regeneration; Seedling establishment Araucária; Taquara; Regeneração natural; Estabelecimento de plântulas.
Ano: 2010 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/118
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Disinfection and in vitro establishment of Acacia mearnsii nodal segments PFB - Pesquisa Florestal Brasileira
Salles, Ecléia Alexandra Poltronieri Buda; Alcantara, Giovana Bomfim; Quoirin, Marguerite Germaine Ghislaine; Gonçalves, Antonio Natal; Higa, Antonio Rioyei.
Due to low rates of rooting it is difficult to propagate selected clones of Acacia mearnsii by cuttings. The purpose of this study was to define a protocol for disinfection of nodal segments for in vitro introduction, aiming to improve the species genetically for forest plantation. Combination of different products concentration (70% ethyl alcohol, sodium hypochlorite, plant preservative mixture and mercuric chloride), immersion period and size of nodal segment were tested. The best disinfection treatment was the combination of 70% ethanol, 0.4% mercuric chloride, sodium hypochlorite at 2% in nodal segments of 10 mm, with 80% survival.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Black wattle; Clones; Cutting Engenharia Florestal; Silvicultura clonal; Propagação vegetativa Acacia negra; Clones; Estaquia.
Ano: 2017 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1392
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Production and evaluation of lignocellulosic residue briquettes PFB - Pesquisa Florestal Brasileira
Paula, Luana Elis de Ramos e; Trugilho, Paulo Fernando; Rezende, Raphael Nogueira; Assis, Claudinéia Olímpia de; Baliza, Ana Elisa Rodarte.
This study aimed to produce and evaluating the briquettes made from residues of plant biomass and test different times and temperatures. The material utilized was composed of wood processing residues (wood shaving and sawdust), coffee bean parchment and coffee tree stem, beam stem and pod, soybean stem and pod, rice husk, corn leaf, stem, straw and cob and sugar cane straw and bagasse. Briquetting was performed at a pressure of 150 Bar. Different times were tested for briquetting sawdust from wood and different temperatures for rice husk and parchment coffee. For evaluation of the briquettes quality, the apparent relative density, compression resistance and combustion index were determined. The results indicated that the briquetting time and temperature...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Energy; Biomass; Briquetting Energia; Biomassa; Briquetagem.
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/253
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