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| Registros recuperados: 22 | |
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| Aina, O.M.; Adetogun, A.C.; Adedokun, M.O.; Onilude, M.A.. |
| In a conversion efficiency study, 10 sawmills were selected out of the existing 44 in Abeokuta metropolis. For 5 days per week in each of the 10 sampled sawmills, the volumes of all the round logs to be converted each day were determined using Newton’s formula. At the end of the days work, the volumes of all lumbers converted were determined and were subtracted from those obtained in the morning, whatever is obtained was the volumes of wood wastes generated in each of the sampled sawmills. This study revealed that the mean conversion efficiency of the 10 selected mills was 56.05%. As a result, the total volume of wood waste generated per day by the 10 mills was approximately 52.00m3. In the entire Abeokuta metropolis 2288m3 of wood wastes will be generated... |
| Tipo: Report |
Palavras-chave: Charcoal; Conversion; Lumbers; Resource /Energy Economics and Policy. |
| Ano: 2005 |
URL: http://purl.umn.edu/54396 |
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| Carvalho, Thais Hortense De; Bacha, Carlos Jose Caetano. |
| O presente trabalho analisa a evolução e estrutura da siderurgia brasileira e do uso do carvão vegetal no período de 1980 a 2006. Os objetivos específicos são: 1) analisar a evolução da produção, consumo, exportação e importação dos principais produtos elaborados por esta indústria, separando os que usam carvão vegetal e os que usam carvão mineral; e 2) caracterizar a estrutura da indústria (número de produtores, número de consumidores, tipos de produtos selecionados, entre outras variáveis). Em relação ao primeiro objetivo deste trabalho, evolução da indústria siderúrgica, contatou-se que o Brasil vem aumentando sua capacidade produtiva e sua inserção no mercado internacional. Quanto ao segundo objetivo específico deste trabalho, estrutura da indústria,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Siderurgia; Carvão; Brasil; Indústria; Teel Industry; Charcoal; Brazil; Industry; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/108568 |
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| Lima, Stefany Lorrayny; Universidade do Estado de Mato Grosso (UNEMAT); Marimon-Junior, Ben Hur; Universidade do Estado de Mato Grosso (UNEMAT); Petter, Fabiano André; Universidade Federal do Piauí (UFPI); Tamiozzo, Suelen; Universidade do Estado de Mato Grosso (UNEMAT); Buck, Gulherme Bossi; University of Florida; Marimon, Beatriz Schwantes; Universidade do Estado de Mato Grosso. |
| In this study, we tested the hypothesis that pyrogenic carbon (biochar) has properties that enable it to replace fresh organic matter (cattle manure) in seedling substrates. These properties include specific electrophysiological interactions in soil-plant media, stability and longevity. The experiment was conducted in the nursery at the State University of Mato Grosso, located in the municipality of Nova Xavantina, between April and June 2011. The experimental design consisted of randomized blocks with ten treatments and four replicates, including a commercial substrate. Linear regression analysis showed a strong positive relationship between manure treatments and number of leaves, fresh and dry biomass, diameter, height and Dickson Quality Index at 30... |
| Tipo: Ensaios de viveiro |
Palavras-chave: Solanum melongena; Charcoal; Cattle manure; Seedling production Fitotecnia Nutrição de plantas. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17542 |
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| Osterkamp,Isa Carla; Lara,Daniela Müller de; Gonçalves,Thaís Alves Pereira; Kauffmann,Marjorie; Périco,Eduardo; Stülp,Simone; Machado,Neli Teresinha Galarce; Uhl,Dieter; Jasper,André. |
| ABSTRACT Charcoal is widely accepted as evidence of the occurrence of palaeo-wildfire. Although fossil charcoal remains have been used in many studies, investigation into the anatomical changes occurring during charring are few. The present study analyses changes in selected anatomical characters during artificial charring of modern wood of three species of the genus Araucaria (i.e. Araucaria angustifolia, Araucaria bidwillii and Araucaria columnaris). Wood samples of the studied species was charred under controlled conditions at varying temperatures. Measurements of anatomical features of uncharred wood and artificial charcoal were statistically analysed. The anatomical changes were statistically correlated with charring temperatures and most of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Araucariaceae; Araucaria angustifolia; Araucaria bidwillii; Araucaria columnaris; Charcoal; Wood. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000200198 |
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| GONÇALVES,THAÍS A.P.; SCHEEL-YBERT,RITA. |
| ABSTRACT Anthracological studies are firmly advancing in the tropics during the last decades. The theoretical and methodological bases of the discipline are well established. Yet, there is a strong demand for comparative reference material, seeking for an improvement in the precision of taxonomic determination, both in palaeoecological and palaeoethnobotanical studies and to help preventing illegal charcoal production. This work presents descriptions of charcoal anatomy of eleven Anacardiaceae species from six genera native to Brazil (Anacardium occidentale, Anacardium parvifolium, Astronium graveolens, Astronium lecointei, Lithrea molleoides, Schinus terebenthifolius, Spondias mombin, Spondias purpurea, Spondias tuberosa, Tapirira guianensis, and Tapirira... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthracology; Archaeobotany; Charcoal; Palaeoecology; Environmental conservation; Wood anatomy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501711 |
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| Thevenon, Florian; Williamson, David; Bard, Edouard; Anselmetti, Flavio S.; Beaufort, Luc; Cachier, Helene. |
| This paper addresses the quantification of combustion-derived products in oceanic and continental sediments by optical and chemical approaches, and the interest of combining such methods for reconstructing past biomass burning activity and the pyrogenic carbon cycle. In such context, the dark particles >0.2 mu m(2) remaining after the partial digestion of organic matter are optically counted by automated image analysis and defined as charcoal, while the elemental carbon remaining after thermal and chemical oxidative treatments is quantified as black carbon (BC). The obtained pyrogenic carbon records from three sediment core-based case studies, (i) the Late Pleistocene equatorial Pacific Ocean. (ii) the mid-Holocene European Lake Lucerne, and (iii) the... |
| Tipo: Text |
Palavras-chave: Biomass burning; Carbon cycle; Charcoal; Black carbon; Climate; Human impact. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00231/34198/32764.pdf |
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| Canal, Wagner Davel; Carvalho, Ana Márcia Macedo Ladeira; Oliveira, Aylson Costa; de Magalhães, Mateus Alves; Cândido, Welliton Lelis; Fialho, Lucas de Freitas. |
| O presente estudo foi realizado com o objetivo de avaliar a degradação térmica da madeira e a liberação de gases condensáveis e não condensáveis em sua carbonização. Utilizou-se madeira de Eucalyptus spp. com aproximadamente 7 anos de idade, proveniente de um teste clonal de uma empresa florestal, localizado em Divinésia, MG. Foram realizadas a análise termogravimétrica da madeira (TG/DTG) e carbonizações em mufla a fim de determinar o comportamento térmico da madeira e o fator de emissão dos gases não condensáveis e condensáveis (CO, CO2, CH4, H2, e licor pirolenhoso). Instalou-se o experimento a fim de se descrever as médias das emissões de gases não condensáveis e condensáveis. A degradação térmica da madeira seguiu comportamento inverso às emissões de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tecnologia e utilização de produtos florestais; Energia da madeira degradação térmica da madeira liberação de gases efeito estufa carvão vegetal Thermal degradation; Charcoal; Eucalyptus. |
| Ano: 2016 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1083 |
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| Korese, Joseph Kudadam; Hensel, Oliver. |
| The purpose of the study was to evaluate the performance of bulk charcoal pad configuration, experimentally. For this, a number of experiments have been conducted in a wind tunnel in order to evaluate the pressure drop, cooling efficiency and specific water consumption as a function of air velocity, water flow rate and pad configuration. The test were carried out at six levels of air velocity (0.12, 0.51, 0.82, 1.05, 1.10 and 1.14 m s-1), three water flow rates (2.2, 3.2 and 5.2 l min-1) and three pad configurations: single layer pad (SLP), double layer pad (DLP) and triple layer pad (TLP) made out of small and large size charcoal particle of equivalent diameter 30 mm and 50 mm respectively. It was found that pressure drop range of small size charcoal pads... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Charcoal; Pad configuration; Wind tunnel; Evaporative cooling; Pressure drop; Cooling efficiency; Specific water consumption. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3841 |
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| Tetto, Alexandre Franca; Hoeflich, Vitor Afonso; Rucker, Neusa Gomes De Almeida; Siva, Daros Augusto Teodoro Da; Borges, Jennifer Lovatto. |
| Este artigo trata de uma análise da série histórica do mercado paranaense de lenha e carvão, no período de 1997 a 2007, levando em consideração os parâmetros preço e produção. Com relação ao preço, procedeu-se a análise envolvendo a lenha de bracatinga (Mimosa scabrella Benth.), eucalipto (Eucalyptus spp.), pinus (Pinus spp.) e mista – na propriedade rural (em pé), posta no carreador e entregue ao consumidor; tanto quanto se calculou a distância média percorrida entre a área original e o destino citado. Da mesma forma, comparou-se o preço obtido do carvão de pinus, bracatinga, eucalipto, lenha mista e resíduos de madeira – na propriedade rural, atacado e varejo. Além desses aspectos analisou-se a legislação pertinente à colheita florestal e às potenciais... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Lenha; Carvão vegetal; Fins energéticos; Sustentabilidade e desenvolvimento; Firewood; Charcoal; Energetic means; Sustainability and development; Resource /Energy Economics and Policy. |
| Ano: 2008 |
URL: http://purl.umn.edu/112619 |
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| Protásio,Thiago de Paula; Trugilho,Paulo Fernando; Napoli,Alfredo; Silva,Marcela Gomes da; Couto,Allan Motta. |
| The objective of this work was to evaluate the carbonization yield of babassu nutshell as affected by final temperature, as well as the energy losses involved in the process. Three layers constituting the babassu nut, that is, the epicarp, mesocarp and endocarp, were used together. The material was carbonized, considering the following final temperatures: 450, 550, 650, 750, and 850ºC. The following were evaluated: energy and charcoal yields, pyroligneous liquid, non-condensable gases, and fixed carbon. The use of babassu nutshell can be highly feasible for charcoal production. The yield of charcoal from babassu nutshell carbonization was higher than that reported in the literature for Eucalyptus wood carbonization, considering the final temperature of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative biomass; Charcoal; Iron industry; Renewable energy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000300189 |
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| DUBOC, E.; COSTA, C. J.; VELOSO, R. F.; OLIVEIRA, L. S.; PALUDO, A.. |
| ABSTRACT: The charcoal production from planted forests has been insufficient to take care of the demand and has implied in more pressure on the forest remainders, in special of the biome Cerrado. In 2005, the charcoal consumption in Brazil reached 38 million of MDC (Meter of Charcoal). The evolution of the charcoal consumption produced from native species passed of 86 % of the total, in 1980, to approximately 49.6 %, in 2005, whereas the charcoal produced from planted forests jumped of 14,1 %, in 1980, to 50,4 %, in 2005. Minas Gerais is the greatest consumer of charcoal and consumed 66 % of the Brazilian production, in 2005. In Brazil, in 2004, 115,580 ha of energy forests had been planted, of which 83.6 % in Minas Gerais. Of the 5,5 million tons of... |
| Tipo: Folhetos |
Palavras-chave: Sistema agroflorestal; Carvão Vegetal; Eucalipto; Silvicultura; Eucalyptus; Agroforestry; Charcoal; Silviculture. |
| Ano: 2007 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/571937 |
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| Ijabo, O. J.; Awulu, J.O.. |
| Fish morphormetric parameters namely; length, thickness, width at several points and weight were determined as a prelude and were used to design the furnace-dryer for investigating the effects of hardwood-charcoal particle size on five of its combustion properties under natural convection. The tests were in a dryer at zero load. One-factor experiment at five levels of the charcoal sizes of 10, 20, 28, 37 and 50 mm were used to study four of the properties namely, burn-out time (BOT), burning rate (BR), peak temperature (PT) and the time it takes for the temperature to peak (TTP). For the fifth property which is temperature gradient (TG), a 5×14, two-factor experiment was used. The above charcoal particle sizes form one factor while time after igniting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Charcoal; Combustion properties; Temperature distribution; Fish parameters. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3392 |
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| Schnitzer, Jenniffer Aparecida; UEL; Faria, Ricardo Tadeu de; UEL; Ventura, Mauricio Ursi; UEL; Sorace, Mauren; UEL. |
| The vegetative and root development of the species of Brazilian orchids Cattleya intermedia (John Lindley) and Miltonia clowesii (John Lindley) using different substrates and pyroligneous extract were assessed. Seedlings from in vitro propagation were transferred to vessels with: T1 - Pinus bark (Pi), coconut fibers (Co) and charred peel of rice (Cr); T2 – PiCoCr and vegetal charcoal (Ch), T3 – PiCoCrCh with the charcoal treated with pyroligneous extract (PE); T4 - CoCrChEP and T5 - CoCrCh. The materials used in substrates were placed in the same ratio. Plant height, number of roots, length of the greater root, number of buddings, total fresh mass and pH were assessed seven months after experiment onset. For Para C. intermedia, T3 was superior than the... |
| Tipo: Pesquisa Empírica de Campo |
Palavras-chave: 5.01.00.00-9 Agronomia Orchidaceae; Vinagre de madeira; Carvão; Ácido pirolenhoso; Desenvolvimento vegetativo; Enraizamento 5.01.03.00-8 Orchidaceae; Wood vinegar; Charcoal; Pyroligneous acid; Vegetative development; Rooting. |
| Ano: 2010 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/714 |
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| Bodin, Stephanie; Molino, Jean-françois; Odonne, Guillaume; Bremond, Laurent. |
| In Amazonia, a growing body of studies has shown that rainforests were affected by human occupation in many areas during pre-Columbian times, inducing changes in their floristic compositions. The northern part of Amazonia, and in particular the Guiana Shield, is much less studied, although past human occupations have also been documented in this region. Therefore, the actual impact of pre-Columbian societies on Guianan forests is still poorly known. Here we explore 12 sites in the dense forest of Nouragues, central French Guiana, ranging from a priori non-anthropogenic to clearly anthropogenic, using an anthracological approach. Soil charcoals were radiocarbon dated to assess the chronology of the past human occupations, and identified to determine shifts... |
| Tipo: Text |
Palavras-chave: Charcoal; Anthracology; Lasiacisthicket; Liana forest; Amazonia; Pre-Columbian occupation; Historical ecology. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00606/71793/77312.pdf |
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| Kemp, Justine; Hope, Geoff. |
| Regional changes in vegetation and environment in the last 16 ka have been reconstructed from Micalong Swamp and Willigobung Swamp (35 degrees S) on the western Southern Tablelands of New South Wales (NSW). Micalong Swamp lies at 980m above sea level (a.s.l.), which is close to the subalpine treeline at this latitude. Willigobung Swamp (780m a.s.l.) approaches the modern ecotone between dry and wet montane forest formations. The sites are sensitive to shifts in temperature and precipitation and are the first reported pollen records from the western montane slopes of NSW. A radiocarbon-based chronology indicates that Micalong Swamp was a swampy, gravel floodplain surrounded by alpine grassland before 16.1 ka. Subalpine woodland may have become established... |
| Tipo: Text |
Palavras-chave: Charcoal; Fen peatlands; Late Quaternary; Pollen; South-eastern Australia; Vegetation history. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00289/40059/39334.pdf |
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| Registros recuperados: 22 | |
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