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Artykuły w czasopismach na temat "Grevillea robusta"

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Knight, Timothy E., i Craig D. Whitesell. "Grevillea robusta (Silver-Oak) Dermatitis". American Journal of Contact Dermatitis 3, nr 3 (wrzesień 1992): 145–49. http://dx.doi.org/10.1097/01634989-199209000-00007.

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Knight, Timothy E., i Craig D. Whitesell. "Grevillea robusta (Silver-Oak) Dermatitis". Dermatitis 3, nr 3 (wrzesień 1992): 145–49. http://dx.doi.org/10.1097/01206501-199209000-00007.

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Ahmed, Amany S., Norio Nakamura, Meselhy R. Meselhy, Makhboul A. Makhboul, Nasr El-Emary i Masao Hattori. "Phenolic constituents from Grevillea robusta". Phytochemistry 53, nr 1 (styczeń 2000): 149–54. http://dx.doi.org/10.1016/s0031-9422(99)00484-7.

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Wang, Hao, David N. Leach, Paul I. Forster i Peter G. Waterman. "Secondary metabolites from Grevillea robusta". Biochemical Systematics and Ecology 36, nr 5-6 (maj 2008): 452–53. http://dx.doi.org/10.1016/j.bse.2007.10.005.

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Trianoski, Rosilani, Arnaldo Barros Rezende Piccardi, Setsuo Iwakiri, Jorge Luis Monteiro de Matos i Ghislaine Miranda Bonduelle. "Incorporação de Grevillea robusta na Produção de Painéis Aglomerados de Pinus". Floresta e Ambiente 23, nr 2 (22.01.2016): 278–85. http://dx.doi.org/10.1590/2179-8087.141515.

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Estudos relativos ao potencial tecnológico de espécies alternativas de rápido crescimento são de grande importância, tendo em vista aumentar a oferta de matéria prima para as indústrias de base florestal, especialmente para as indústrias de painéis aglomerados. Neste contexto, este trabalho teve como objetivo avaliar a viabilidade de utilização da Grevillea robusta em diferentes misturas com Pinus taeda para a produção de painéis aglomerados, bem como, estabelecer a quantidade máxima de incorporação desta espécie numa matriz industrial. Os painéis foram produzidos com as espécies puras e em diferentes misturas, com densidade nominal de 0,70 g/cm3 e resina uréia-formaldeído (8%). Os resultados indicaram que o tratamento constituído de 20% Grevillea robusta e 80% de Pinus taeda atendem os requisitos mínimos das propriedades mecânicas segundo a norma EN 312 (além da testemunha) e que a máxima incorporação de madeira de Grevillea robusta numa matriz de Pinus é de 26%.
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Iwakiri, Setsuo, Jarbas Shimizu, José de Castro Silva, Cláudio Henrique Soares Del Menezzi, Carlos Augusto Puehringher, Ivan Venson i Christine Larroca. "Produção de painéis de madeira aglomerada de Grevillea robusta A. Cunn. ex R. Br." Revista Árvore 28, nr 6 (grudzień 2004): 883–87. http://dx.doi.org/10.1590/s0100-67622004000600013.

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Este trabalho teve como objetivo avaliar o comportamento da madeira de Grevillea robusta na produção de painéis de madeira aglomerada. Os painéis foram produzidos em densidades de 0,60 e 0,80 g/cm³ e conteúdo de resina de 6 e 8%. Os resultados de propriedades físicas e mecânicas dos painéis fabricados com densidade de 0,80 g/cm³ e conteúdo de resina de 8% evidenciaram que a madeira de Grevillea robusta pode ser utilizada como fonte alternativa de matéria-prima para produção de painéis aglomerados.
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Loewe Muñoz, Verónica Francisca. "Apuntes sobre algunas latifoliadas de maderas valiosas. 4. Grevillea robusta A. Cunn". Ciencia & Investigación Forestal 7, nr 1 (7.07.1993): 25–104. http://dx.doi.org/10.52904/0718-4646.1993.181.

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Grevillea robusta es un árbol nativo de Australia, descubierto y descrito por el explorador europeo Alan Cunningham en 1827. La especie pertenece a las angiospermas, dicotiledóneas, familia Proteaceae, y es llamada simplemente silky oak, grevillea géant, roble sedoso, silver oak, he-oak, o simplemente grevillea, y su sinónimo es Grevillea umbricata A. Cunn. Esta especie australiana es la más grande de su género, que comprende más de 260 especies, alcanzando alturas de 40 m y diámetros de hasta 1,2 m. La especie ha despertado gran interés, pues se trata de un árbol de fácil adaptación, de rápido crecimiento y con objetivos múltiples. En su región de origen es la especie de mayor resistencia, regenera vigorosamente y coloniza en forma agresiva las áreas alteradas. Para ser un árbol tan grande crece rápidamente y tiene éxito en un amplio rango de condiciones climáticas y edáficas, lo que lo hace de un gran interés. El éxito que ha tenido la especie se debe entre otros factores a su variedad productiva, no quedando excluida de ningún producto o servicio. Principalmente en las áreas bajas y secas, los agricultores han encontrado que la grevillea se reproduce y maneja fácilmente, presenta buenos rendimientos de leña y postes y no compite notoriamente con los cultivos adyacentes.
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Ahmed, Amany, i Makboul Makboul. "Chemical investigation of Grevillea robusta A.Cunn flowers". Sphinx Journal of Pharmaceutical and Medical Sciences 2, nr 1 (31.10.2021): 1–8. http://dx.doi.org/10.21608/sjpms.2021.95637.1000.

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Bhandari, Maneesh S., Aman Dabral, Rama Kant Anon, Rajendra K. Meena i Shailesh Pandey. "Indeterminate flowering in Grevillea robusta: phenological climatic anomaly". Indian Forester 146, nr 7 (10.07.2020): 668. http://dx.doi.org/10.36808/if/2020/v146i7/154280.

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Harwood, C. E., G. F. Moran i J. C. Bell. "Genetic Differentiation in Natural Populations of Grevillea robusta". Australian Journal of Botany 45, nr 4 (1997): 669. http://dx.doi.org/10.1071/bt96073.

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Genetic variation in 23 natural populations of Grevillea robusta A.Cunn. from across the natural range of the species was examined using 20 isozyme loci assayed in young seedlings. Mean expected heterozygosity per population, He , varied from 0.080 to 0.131 with an average of 0.105. The genetic diversity of individual populations did not appear to be related to their ecological characteristics (araucarian vine forest or riverine habitat types) or their geographic locations. A genetic distance analysis indicated a significant separation of the populations into two regional groups, eight from the northern part of the natural range and the remaining 15 from central and southern areas. Between-population differences accounted for 17.9% of the total genetic variation, one-third of which was attributable to the difference between the two regional groups. Most alleles at the 20 loci occurred across most or all of the geographic range. This, and the low level of genetic differentiation between populations, suggest that genetic exchange between populations has been maintained, despite the pattern of natural distribution of the species in small, separated populations.
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Rozprawy doktorskie na temat "Grevillea robusta"

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Kruger, Sarah Jane, i n/a. "Characterisation of Proteins from Grevillea robusta and NMR Studies of the Serine Protease Inhibitor". Griffith University. School of Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040618.150708.

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Proteins that recognise the sugar surface structures on cells have an enormous potential to be used as tools in the characterisation of these structures. A group of proteins, called lectins, have been identified that can bind to carbohydrate complexes on the receptors of cells. The crude extract from Grevillea robusta seeds was found to contain lectin-like proteins that were different from most other lectins, as they would specifically target the receptors of white blood cells and not those found on red blood cells. Therefore, the lectin isolated from G.robusta could be used as a tool to identify the specific surface structures on white blood cells. The lectin was isolated using affinity chromatography where a complex (oligosaccharide) matrix was used. Agglutination, binding and sugar inhibition assays confirmed the isolated protein was a lectin. The lectin was found in low amounts (up to 5% of the total protein content) within the seeds of G.robusta. As a result of this low yield, the identification of the lectin by PAGE was difficult because the levels of protein were beyond the detection limit of the commercial staining reagents. The lectin was called the GR2 protein and was characterised as a monocot mannose binding lectin based on its sugar specificity for only mannose. A serine protease inhibitor was isolated from the seeds of G.robusta using two different chromatography methods, reverse phase HPLC (GR1.HPLC) and gel filtration chromatography (GR1.GF). Ion exchange chromatography was used to initially separate the proteins in the crude extract and the fraction containing the GR1 protein was further purified using reverse phase HPLC (GR1.HPLC). N-terminal sequencing results of the GR1.HPLC protein, showed evidence of proteolytic cleavage during the extraction process, which lead to the second purification method being established. Protease inhibitors were added to the buffers prior to being purified by gel filtration chromatography, which resulted in the GR1 protein being isolated from the crude extract without the presence of the contaminating protein. Mass spectroscopy identified the molecular weight of the GR1 protein to be 6669Da and the full amino acid sequence was derived by cDNA techniques. Sequence alignment studies of the GR1 protein showed significant similarities with the Bowman-Birk inhibitor. The positioning of the cysteine residues were conserved throughout the Bowman-Birk superfamily, however these residues were not conserved within the GR1 protein. Competitive inhibition assays on the GR1 protein revealed the protein could inhibit both trypsin and chymotrypsin at similar levels to that seen for the Bowman-Birk inhibitor. Therefore, the GR1 protein was characterised as a member of the Bowman-Birk superfamily of serine protease inhibitors. The three-dimensional structure of the GR1 protein was determined using two-dimensional NMR spectroscopy. Computer programs such as XEASY, DYANA and SYBYL® were used to tabulate the information taken from the 2D experiments, generate structures and minimise these structures respectively. The solution structure of the GR1 protein was found to contain a region of antiparallel β-sheet structure that corresponded to the trypsin binding site and the remainder of the protein consisted of loops and turns that were held together by disulfide bridges (the chymotrypsin-binding region). Structural similarities between the GR1 protein and the Bowman-Birk inhibitor existed only in the trypsin-binding site of the Bowman-Birk inhibitor. The GR1 protein is the first member of the Proteaceae family to be characterised as a Bowman-Birk inhibitor. This thesis outlines the isolation and biochemical characterisation of the two proteins found within Grevillea robusta and also describes the steps involved and results obtained in determining the three-dimensional structure of the GR1 protein.
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Kruger, Sarah Jane. "Characterisation of Proteins from Grevillea robusta and NMR Studies of the Serine Protease Inhibitor". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/366534.

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Proteins that recognise the sugar surface structures on cells have an enormous potential to be used as tools in the characterisation of these structures. A group of proteins, called lectins, have been identified that can bind to carbohydrate complexes on the receptors of cells. The crude extract from Grevillea robusta seeds was found to contain lectin-like proteins that were different from most other lectins, as they would specifically target the receptors of white blood cells and not those found on red blood cells. Therefore, the lectin isolated from G.robusta could be used as a tool to identify the specific surface structures on white blood cells. The lectin was isolated using affinity chromatography where a complex (oligosaccharide) matrix was used. Agglutination, binding and sugar inhibition assays confirmed the isolated protein was a lectin. The lectin was found in low amounts (up to 5% of the total protein content) within the seeds of G.robusta. As a result of this low yield, the identification of the lectin by PAGE was difficult because the levels of protein were beyond the detection limit of the commercial staining reagents. The lectin was called the GR2 protein and was characterised as a monocot mannose binding lectin based on its sugar specificity for only mannose. A serine protease inhibitor was isolated from the seeds of G.robusta using two different chromatography methods, reverse phase HPLC (GR1.HPLC) and gel filtration chromatography (GR1.GF). Ion exchange chromatography was used to initially separate the proteins in the crude extract and the fraction containing the GR1 protein was further purified using reverse phase HPLC (GR1.HPLC). N-terminal sequencing results of the GR1.HPLC protein, showed evidence of proteolytic cleavage during the extraction process, which lead to the second purification method being established. Protease inhibitors were added to the buffers prior to being purified by gel filtration chromatography, which resulted in the GR1 protein being isolated from the crude extract without the presence of the contaminating protein. Mass spectroscopy identified the molecular weight of the GR1 protein to be 6669Da and the full amino acid sequence was derived by cDNA techniques. Sequence alignment studies of the GR1 protein showed significant similarities with the Bowman-Birk inhibitor. The positioning of the cysteine residues were conserved throughout the Bowman-Birk superfamily, however these residues were not conserved within the GR1 protein. Competitive inhibition assays on the GR1 protein revealed the protein could inhibit both trypsin and chymotrypsin at similar levels to that seen for the Bowman-Birk inhibitor. Therefore, the GR1 protein was characterised as a member of the Bowman-Birk superfamily of serine protease inhibitors. The three-dimensional structure of the GR1 protein was determined using two-dimensional NMR spectroscopy. Computer programs such as XEASY, DYANA and SYBYL® were used to tabulate the information taken from the 2D experiments, generate structures and minimise these structures respectively. The solution structure of the GR1 protein was found to contain a region of antiparallel β-sheet structure that corresponded to the trypsin binding site and the remainder of the protein consisted of loops and turns that were held together by disulfide bridges (the chymotrypsin-binding region). Structural similarities between the GR1 protein and the Bowman-Birk inhibitor existed only in the trypsin-binding site of the Bowman-Birk inhibitor. The GR1 protein is the first member of the Proteaceae family to be characterised as a Bowman-Birk inhibitor. This thesis outlines the isolation and biochemical characterisation of the two proteins found within Grevillea robusta and also describes the steps involved and results obtained in determining the three-dimensional structure of the GR1 protein.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
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Martins, Emerson Gonçalves. "Seleção genética e características fisiológicas e nutricionais de procedências de Grevillea robusta (Cunn.) estabelecidas no Estado do Paraná". reponame:Repositório Institucional da UFPR, 2013. http://hdl.handle.net/1884/25429.

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Os objetivos do presente estudo, foram identificar entre as diversas procedências originais de grevílea (Grevillea robusta Cunn), as de maior produtividade no Noroeste e Sudoeste do Estado do Paraná, que possam constituir uma base genética mais promissora para a implementação de um programa de melhoramento. Detectar possíveis diferenças fisiológicas entre quatro procedências de grevulea e suas correlações com variáveis de crescimento estabelecidas no Sudoeste do Estado do Paraná. Quantificar a produção de serapilheira, determinando os teores e conteúdos de nutrientes e caracterizar o estado nutricional das citadas procedências. A seleção genética utilizando o programa SELEGEN, destacou no Noroeste as procedências Mc Phersons, Fine Flower, Paddys Flat e Bottle Creek, no Sudoeste, Fine Flower, Bottle Creek, Mummulgum e Mc Phersons. No Noroeste e sudoeste, os ganhos genéticos estimados para o volume cilíndrico, das procedências australianas com três e quatro anos de idade, foram superiores em 99% e 71% respectivamente, quando comparadas com a testemunha. A transformação de ambas as áreas em Pomar de Sementes por Mudas, resulta um ganho genético estimado para cada Pomar praticamente igual ao ganho genético estimado para a melhor procedência, valores estes que giram em torno de 148% e 117% respectivamente. No caso de instalação de Pomar Clonal, calcula-se que o ganho genético em relação à testemunha, deve ser superior a 187 % e 153% para o noroeste e sudoeste respectivamente. Estes ganhos genéticos confirmam que não existe a necessidade de se retornar à Austrália para se coletar novamente as procedências superiores identificadas para o aumento de volume de madeira. A clorofila b e a relação clorofila alb, foram as variáveis fisiológicas que melhor caracterizaram as diferentes procedências durante as diferentes estações climáticas, correlacionando-se diretamente, (clorofila b) e inversamente (relação clorofila alb), com a velocidade de crescimento em altura durante o ano. Diferenças significativas foram observadas para as variáveis área específica foliar e o peso específico foliar, emtre as procedências de origem australiana e a testemunha. O comportamento das diferentes procedências com relação a concentração dos nutrientes foi semelhante e apresentou a seguinte ordem decrescente; macronutrientes, N> Ca> K> Mg > P e micronutrientes, Mn > Fe > Zn> Cu. A deposição de serapilheira feita pelas diversas procedências de grevílea é positivamente correlacionada com o volume de madeira produzido, sendo a procedência "Fine Flower", a que maior volume de serapilheira depositou durante o ano. A produção em volume de madeira de grevílea é diretamente relacionada com os conteúdos de todos os macronutrientes e micronutrientes, exceto o K e o Zn.
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Silva, Wanderley Porfírio da. "Modificações microclimáticas em sistema silvipastoril com Grevillea robusta A. cunn. Ex. R. Br. na região noroeste do Paraná". Florianópolis, SC, 1998. http://repositorio.ufsc.br/xmlui/handle/123456789/77426.

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Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias.
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Os sistemas agroflorestais (SAF’s) é uma área das mais promissoras, capaz de contribuir para o desenvolvimento de forma de uso sustentável do meio ambiente para satisfazer as demandas por alimentos e energia de uma população crescente no mundo. Sistemas agroflorestais podem melhorar/aumentar a eficiência com que os recursos (limitados) são utilizados, produzindo desse modo mais e/ou maior variedade de alimentos e produtos. Dentre os sistemas específicos que configuram os chamados SAF’s, o sistema silvipastoril denota da natureza de seus componentes principais (pastagem-gado-árvore) e da forma de utilização dos recursos disponíveis, onde os componentes são intencionalmente utilizados em associação numa mesma área, de maneira simultânea ou seqüencial. O estabelecimento de sistemas silvipastoris na região Noroeste do Estado do Paraná pode reduzir efetivamente a erosão do solo e o assoreamento de cursos d’água; pode ampliar o ciclo de reformas em pastagens; mitigar os efeitos das condições climáticas extremas (seca, ventos frios, geada, altas temperaturas) para os animais e para a pastagem, influenciando positivamente na capacidade produtiva da área. Devido a isso, pode favorecer o desenvolvimento da região através da disponibilidade de matéria-prima em maior quantidade (devido ao aumento da capacidade de suporte das pastagens) e diversidade (produção de madeira que atualmente não existe, e com custos de produção inferiores aos de outras regiões, dada as condições ambientais favoráveis ao crescimento florestal e à facilidade de extração), promovendo oferta de empregos diretos e indiretos via incremento de cadeias produtivas conexas e emergentes. Entretanto, o sucesso ou a falência de um sistema silvipastoril, depende em grande extensão do grau com que os componentes do sistema são complementares no uso da luz, água e nutrientes. Existe, portanto, a necessidade de desenvolver um entendimento geral melhor dos princípios que fundamentam a partição desses recursos em um sistema silvipastoril em vista de desenvolver soluções que tenham aplicação em maior escala. O presente trabalho pode contribuir com essa questão através do aumento do entendimento geral sobre as modificações microclimáticas em sistema silvipastoril com árvores dispostas em renques curvilíneos. O trabalho foi conduzido em área de uma propriedade privada no município de Tapejara na região noroeste do Estado do Paraná, no período de maio de 1997 a janeiro de 1998. Avaliou-se as modificações microclimáticas envolvendo a temperatura do ar, o déficit de pressão de vapor, a velocidade e direção de ventos, a radiação solar global, o balanço de energia e a radiação fotossinteticamente ativa. Também foram avaliadas a produção de matéria seca e teor de proteína bruta da pastagem, o índice de área foliar explotável, a área específica de folha, a razão de área foliar, a fração de água disponível no solo e estimativas de índices de conforto térmico animal. Todas as medidas foram efetuadas em uma condição de pastagem de Brachiaria brizanta arborizada com Grevillea robusta dispostas em renques curvilíneos no oitavo ano da implantação, e, numa segunda condição de pastagem pura de B. brizantha no terceiro ano de implantação. Os resultados obtidos demonstram que a presença do componente arbóreo diminuiu o saldo de radiação disponível aos processos do meio, no plano analisado; promoveu menor fluxo de radiação fotossinteticamente ativa sob as copas, porém a produção de matéria seca da pastagem foi significativamente superior em tais posições quando comparada com as produções obtidas na entrelinha (entre dois renques). A temperatura do ar, noturna, no inverno, foi maior sob os renques; sendo que, durante o dia, a diferença de temperatura entre as porções sombreadas e ensolaradas na área atingiram, 3,5 oC e 8,0 oC, no inverno e no verão, respectivamente. O déficit de pressão de vapor foi menor nas condições do sistema silvipastoril. Devido às características óticas das folhas das árvores e à disposição dos renques, houve um incremento da radiação solar global na posição central (entre dois renques) ocasionado pela reflexão das copas; houve redistribuição das direções do vento com menor tempo de permanência por direções predominantes; a velocidade dos ventos foi menor entre 26 e 61% na área arborizada. Em período de poucas chuvas, a fração de água disponível no solo foi maior no sistema silvipastoril. A condição de pastagem arborizada apresentou melhores estimativas de índices de conforto térmico animal do que a condição da pastagem não arborizada. Os resultados obtidos sugerem a possibilidade de utilizar espaçamento menor entre renques de G. robusta em sistema silvipastoril, desde que se atente para a altura de inserção de copa. Esses resultados sugerem ainda que o sistema estudado é mais vantajoso do que o sistema convencional de pastagens (pastagens a céu aberto).
Abstract: The agroforestry systems are one the promise areas able to contribute to the development of sustainable use of environmental to satisfy the demands for goods and energy of the growing population in the world. Agroforestry system may increase the efficiency with in the resources (limited) are utilized, producing in this way more or a greater variety of goods and products. In the specific systems that configure the so called Agroforestry System, the silvopastoral system comes from the nature of its principle components (pasture-cattle-tree) and the utilization of disponible resources. The establishment of silvopastoral systems in the northeast of State of Paraná may reduce impact the soil erosion and the silting up of the water courses, could increase the cicle of reforms in pastures, mitigate the effects of extreme climatic conditions (dry, cold winds, frost, high temperatures) for the animals and for the grasses, influencing positively on the productive capacity of the area. Therefore, it could favour the development of the region through the disponibility of prime material in a greater quantity (the increase of the support capacity of the pastures) and diversity (wood production that do not exist and dealing costs production less than in others regions, in the environmental conditions favorable to the forest increasing and extraction facilities) promoting employment offers direct and indirectly, through increasing of emergent and conex productive chains. However, the success or the insolvency of a silvopastoral system depends on the way that system is related to the utilization of sun light, water and nutrients. So, exist the necessity of development a general knowledge of the principles which are fundamental the partition of the resources in a silvopastoral system that intend to develop solutions that could be applied in a larger scale. The work was conducted in a private property in Tapejara municipality in the northeast of State of Paraná, from May 1997 until January 1998. It was evaluated the microclimatic modifications involving the air temperature, the water vapour pressure saturation deficit of the air, the velocity and direction of the winds, the global solar radiation, the energy balance and the active photosynthetic radiation. I was also evaluated the production of dry matter from the pasture, the fraction of disponible water in the soil and estimative of the animal thermal comfort index . The whole measures were effected in a pasture condition of Brachiaria brizantha with Grevillea robusta rows placed in contour line in the eighth year of implantation and a second sole pasture condition of B. brizantha in the third year of implantation. The obtained results demonstrated presence of arboreal component decrease the net radiation value of the analyzed plan, promoted less flux of active photosynthetic radiation under the canopies, but the production of dry matter in the pasture was significantly superior in such positions when compared with the productions obtained between two rows. The air temperature at night in the winter, was greater under the tree canopy. During the day, the difference in temperature do between shadowed and sunny portions in the area reached 3.5°C e 8.0°C, in the winter and summer, respectively. The vapour pressure deficit was less in the silvopastoral system condition. Due to the optical characteristic of leaves and the disponibility of the rows, there was an increase of the global solar radiation in the central position (between two rows), occasioned by the reflexion of canopy, a redistribution of the wind direction with less time of permanency by predominant directions, the wind velocities was less between 26 and 61% in the area. In the period of few raining, the fraction of disponible water was bigger in the silvopastoral system. The pasture condition presented better estimatives of indexes of thermal comfort and livestock welfare than the condition of the sole pasture. The obtained results suggest the possibility of utilize a small space between rows of G. robusta in silvopastoral system, since it was suggested also that the studied system is more advantaged than the conventional pasture system (opened pasture).
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Gahungu, Augustin. "Interaction arbres-cultures dans les systèmes agroforestiers, incidence de la compétition du Grevillea robusta et du Markhamia lutea sur la culture associée de maïs, Zea mays". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq33646.pdf.

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Chagas, Matheus Peres. "Caracterização dos anéis de crescimento e dendrocronologia de árvores de Grevillea robusta A.Cunn, Hovenia dulcis Thunb., Persea americana Mill., Tabebuia pentaphylla Hemsl. e Terminalia catappa L. nos municípios de Piracicaba e Paulinia, SP". Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-19052009-084555/.

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Árvores de espécies exóticas foram plantadas em espaços urbanos e rurais, constituindo parte da paisagem e da cobertura vegetal das cidades brasileiras. As árvores de inúmeras dessas espécies apresentam fenologia característica e atividade cambial sazonal, formando anéis de crescimento anuais, que têm ampla aplicação na silvicultura, como indicadores ambientais e na detecção de espécies bioacumuladoras. No presente trabalho foram caracterizados os anéis de crescimento, a idade, a taxa de crescimento e o teor de Hg no lenho de Grevillea robusta, Hovenia dulcis, Persea americana, Tabebuia pentaphylla e Terminalia catappa, no município de Paulínia (com registro de contaminação por Hg) e de Piracicaba, SP. Do tronco das árvores foram extraídas amostras do lenho e (i) caracterizados e mensurados os anéis de crescimento, (ii) sincronizados, construídas as séries cronológicas com os programas COFECHA e ARSTAN, (iii) obtidas as funções de resposta dos anéis de crescimento em relação ao clima, com o programa RESPO; (iv) construídas as curvas variação da densidade do lenho, do crescimento do tronco e determinado o seu incremento médio anual. Através de análises químicas foi determinado o teor de Hg nas amostras do lenho e no solo. Houve diferenças significativas nas amostras de solo de Paulínia (pátio da empresa e outro distante de 350 m) e de Piracicaba, sendo de 21,5, 0,14 e <0,023 mg/kg, respectivamente. No lenho de G. robusta, H. dulcis, T. pentaphylla e T. catappa, do pátio da empresa em Paulínia, foram determinados 4,95, 1,98, 0,97 e 4,70 µg/g de Hg; no lenho das árvores de P. americana, distante 350 m, não foi detectada a presença do Hg. Os anéis de crescimento têm marcante anatomia, correlacionada com a delimitação dos anéis e valores de densidade. Os perfis radiais de densidade do lenho mostraram similaridades e diferenças entre as árvores e locais. Foram construídas séries padronizadas de anéis de crescimento de H. dulcis, P. americana, T. pentaphylla e de T. catappa, para os sítios A e B e A-B (agrupados), obtendo-se séries temporais de largura dos anéis de crescimento, representando um padrão comum de variabilidade. As correlações entre as séries cronológicas dos anéis de crescimento das árvores nos sítios A e B e a temperatura média e precipitação mensal, foram significativas e consideradas determinantes no crescimento do tronco. Com relação ao incremento médio anual do tronco detectaram-se comportamentos diferenciados das árvores das 4 espécies, em relação aos 2 sítios. Os resultados indicaram que a presença de Hg no solo e no lenho das árvores localizadas na área da empresa, parece não afetar o seu crescimento. Indicam, também, que as condições dos sítios e as inerentes as árvores das espécies devem estar influenciando o crescimento do tronco.
Exotic tree species were planted in urban and rural areas, constituting part of the landscape and the vegetal covering of Brazilian cities. The countless trees of those species present characteristic phenology and seasonal cambium activity, forming annual tree-rings. The tree-rings have wide application in the silviculture and as environmental indicators (evaluating the contamination for heavy metals) and detecting bioaccumulators species. In the present work the tree-rings were characterized, as well as the age, the growth rate and Hg content in the trunk of Grevillea robusta, Hovenia dulcis, Persea americana, Tabebuia pentaphylla and Terminalia catappa trees, planted in Paulínia (with registration of Hg contamination) and in Piracicaba cities, São Paulo State. From the tree trunks were extracted wood samples and (i) characterized and evaluated the tree-rings, (ii) synchronized, built the chronological series with the programs COFECHA and ARSTAN, (iii) obtained the response functions of the treerings in relation to the climate, with the program RESPO; (iv) built the curves of the wood density, of the pole growth and annual increment. Through chemical analyses was evaluated the Hg content in the trees wood samples and in the soil collected near of the trees trunk base. There were significant differences in the soil samples of Paulínia (site from the patio of the Hg emission company and other site distant of 350 m) and Piracicaba, being of 21,5, 0,14 and <0,023 mg/kg, respectively. In the wood samples of G. robusta, H. dulcis, T. pentaphylla and T. catappa, from the patio of the company in Paulínia, were detected 4.95, 1.98, 0.97 and 4.70 µg/g of Hg, respectively; in the trees wood samples of P. americana, distant 350 m, the presence of Hg was not detected. The tree-rings have a characteristic anatomy, correlated with its boundaries and density values. The wood density radial profiles showed similarities and differences between the trees and sites. Tree-rings standardized series of H. dulcis, P. americana, T. pentaphylla and of T. catappa trees were built, to the sites A and A-B (grouped), being obtained temporal series of tree-rings width, representing a common model of variability. The correlations among the chronological series of the tree-rings of sites A and B and monthly mean temperature and precipitation accumulated, were significant and considered decisive in the trunk growth. With relationship to the pole annual mean increment, particular behavior of the 4 tree species were detected, in relation to the 2 sites. The presence of Hg in the soil and in the wood of tree species located close to the industrial company seems to not affect the trunk growth. Indicated, also, that the site conditions (planting spacing; competition for the growth factors; water soil saturated; urbanized area and street covered with asphalt, proximity and shadow among trees, etc.) and the inherent characteristic of the species trees should be influencing the tree growth.
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Batista, Wagner Roberto [UNESP]. "Emprego da reflectometria por domínio do tempo na determinação da umidade de madeiras comerciais". Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/101762.

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O presente trabalho teve por objetivo avaliar o emprego da reflectometria no domínio do tempo, conhecida também, como TDR (Time Domain Reflectometry) na obtenção da umidade em madeiras. Atualmente esta técnica é muito empregada na física dos solos e sistemas de irrigação, para o monitoramento do teor de água no solo. Para este estudo, empregou-se duas espécies de madeiras comerciais, o Pinus caribaea var. hondurensis e a Grevillea robusta (Cunn.), procedentes dos municípios de Cabrália Paulista-SP e Duartina-SP. Para cada espécie, foram escolhidas de forma aleatória 11 árvores onde estas foram abatidas, serradas em toras de 3,0m e encaminhadas para serraria onde foi realizado o processo de desdobramento em tábuas pelo sistema de corte tangencial. As tábuas apresentaram espessura de 28mm e largura de 24cm. Em seguida, escolheu-se novamente de forma aleatória 11 tábuas, que foram embaladas em plástico para evitar a perda de água, e encaminhadas para o laboratório. Uma vez obtidas as amostras representativas para avaliação, estas foram inicialmente pesadas e secas em estufa elétrica a 40 oC de temperatura. Para o Pinus caribaea var. hondurensis, o processo de secagem iniciou-se com umidade média de 101,45% e finalizou, à 7,36% de umidade. Já para a Grevillea robusta (Cunn.), a umidade média inicial foi de 125,88% e final de 6,62%. Durante o processo de secagem, a umidade foi determinada, periodicamente, através do método de massas correntes, bem como, a respectiva constante dielétrica relativa pela TDR. Para o estudo da viabilização da TDR na determinação...
The main objective of this present work was to evaluate the applied of the reflectometry in the domain of time, technique known as TDR (Time Domain Reflectometry) to obtention of moisture in woods. Nowadays, this technique is very used in soil physics and irrigation system, to the monitoring of moisture in the soil. To this study, two species of commercial woods were used, the Pinus caribaea var. hondurensis and the Grevillea robusta (Cunn.), these woods come from the municipal district of Cabrália Paulista-SP and Duartina-SP. To each specie, were chosen in a casual way, 11 trees. They were dejected, planked in logs of 3,0m and referred to the sawmill, the place where was realized the process of unfolding the wood in boards by the system of tangential section. The boards brung up the ply of 28mm and the width of 24cm. Next, were chosen again, in a casual way, 11 planks that were unrolled in plastic just to avoid the waterless, and referred to the lab. When were obtained the appropriate samples to the evaluation, they were, in an initial instant, measure out and dry in an electric greenhouse of a temperature of 40 oC. To Pinus caribaea var. hondurensis, the dry process started with a media moisture of 101,45% and finished with 7,36% of moisture. To the other specie, the Grevillea robusta (Cunn.), the initial media moisture found was 125,88% and the final was 6,62%. During the whole dry process, the moisture was determinated, periodically, throw the masses current, as like the relative dielectric constant by the TDR. To the study of the feasibility of TDR in the determination of moisture in woods, was chosen to establish 3 distances among the sensor’s stick: 10mm, 20mm and 30mm (these distances were applied in commercial resistive gauges too). In the same way, it was established the variations in the velocity of propagation of electromagnetic pulses send out from TDR equipment... (Complete abstract click electronic access below)
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Batista, Wagner Roberto 1975. "Emprego da reflectometria por domínio do tempo na determinação da umidade de madeiras comerciais /". Botucatu : [s.d.], 2008. http://hdl.handle.net/11449/101762.

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Resumo: O presente trabalho teve por objetivo avaliar o emprego da reflectometria no domínio do tempo, conhecida também, como TDR (Time Domain Reflectometry) na obtenção da umidade em madeiras. Atualmente esta técnica é muito empregada na física dos solos e sistemas de irrigação, para o monitoramento do teor de água no solo. Para este estudo, empregou-se duas espécies de madeiras comerciais, o Pinus caribaea var. hondurensis e a Grevillea robusta (Cunn.), procedentes dos municípios de Cabrália Paulista-SP e Duartina-SP. Para cada espécie, foram escolhidas de forma aleatória 11 árvores onde estas foram abatidas, serradas em toras de 3,0m e encaminhadas para serraria onde foi realizado o processo de desdobramento em tábuas pelo sistema de corte tangencial. As tábuas apresentaram espessura de 28mm e largura de 24cm. Em seguida, escolheu-se novamente de forma aleatória 11 tábuas, que foram embaladas em plástico para evitar a perda de água, e encaminhadas para o laboratório. Uma vez obtidas as amostras representativas para avaliação, estas foram inicialmente pesadas e secas em estufa elétrica a 40 oC de temperatura. Para o Pinus caribaea var. hondurensis, o processo de secagem iniciou-se com umidade média de 101,45% e finalizou, à 7,36% de umidade. Já para a Grevillea robusta (Cunn.), a umidade média inicial foi de 125,88% e final de 6,62%. Durante o processo de secagem, a umidade foi determinada, periodicamente, através do método de massas correntes, bem como, a respectiva constante dielétrica relativa pela TDR. Para o estudo da viabilização da TDR na determinação... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The main objective of this present work was to evaluate the applied of the reflectometry in the domain of time, technique known as TDR (Time Domain Reflectometry) to obtention of moisture in woods. Nowadays, this technique is very used in soil physics and irrigation system, to the monitoring of moisture in the soil. To this study, two species of commercial woods were used, the Pinus caribaea var. hondurensis and the Grevillea robusta (Cunn.), these woods come from the municipal district of Cabrália Paulista-SP and Duartina-SP. To each specie, were chosen in a casual way, 11 trees. They were dejected, planked in logs of 3,0m and referred to the sawmill, the place where was realized the process of unfolding the wood in boards by the system of tangential section. The boards brung up the ply of 28mm and the width of 24cm. Next, were chosen again, in a casual way, 11 planks that were unrolled in plastic just to avoid the waterless, and referred to the lab. When were obtained the appropriate samples to the evaluation, they were, in an initial instant, measure out and dry in an electric greenhouse of a temperature of 40 oC. To Pinus caribaea var. hondurensis, the dry process started with a media moisture of 101,45% and finished with 7,36% of moisture. To the other specie, the Grevillea robusta (Cunn.), the initial media moisture found was 125,88% and the final was 6,62%. During the whole dry process, the moisture was determinated, periodically, throw the masses current, as like the relative dielectric constant by the TDR. To the study of the feasibility of TDR in the determination of moisture in woods, was chosen to establish 3 distances among the sensor's stick: 10mm, 20mm and 30mm (these distances were applied in commercial resistive gauges too). In the same way, it was established the variations in the velocity of propagation of electromagnetic pulses send out from TDR equipment... (Complete abstract click electronic access below)
Orientador: João Eduardo Guarnetti dos Santos
Coorientador: Antonio Evaldo Klar
Coorientador: Elias Taylor Durgante Severo
Banca: Marcos Antonio de Rezende
Banca: Momotaro Imaizumi
Banca: José Fernandes Presenço
Banca: Eik Teório
Doutor
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Kariuki, Jason Gathirwa. "Genetic variation in early growth and in productivity under water stress in Grevillea robusta A. Cunn". Master's thesis, 1994. http://hdl.handle.net/1885/143789.

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Antoine, Kalinganire. "The reproductive biology of Grevillea Robusta". Phd thesis, 1999. http://hdl.handle.net/1885/147689.

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Książki na temat "Grevillea robusta"

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Harwood, C. E. Grevillea robusta: An annotated bibliography. Nairobi, Kenya: International Council for Research in Agroforestry, 1989.

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Grevillea robusta. Grevillea. INFOR, 2000. http://dx.doi.org/10.52904/20.500.12220/4107.

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Camelio Rodríguez, María Eugenia, i Verónica Francisca Loewe Muñoz. Grevillea. Grevillea robusta. Monografía. INFOR, 1997. http://dx.doi.org/10.52904/20.500.12220/3990.

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Grevillea robusta es una especie nativa de la zona subtropical del este de Australia, donde fue descubierta y descrita en 1827 por el explorador europeo Alan Cunninghan. El género Grevillea pertenece a la subdivisión de las angiospermas y está compuesto por 260 especies que pertenecen a la familia Proteaceae. Grevillea robusta es la más grande en su género, alcanzando alturas cercanas a los 40 m y diámetros de hasta 1,0 m, siendo relativamente uniforme en sus características morfológicas. La especie ha despertado gran interés, pues se trata de un árbol de fácil adaptación, rápido crecimiento y con objetivos múltiples. El éxito que ha tenido se debe entre otros factores a que crece rápidamente en un amplio rango de condiciones climáticas y edáficas; además presenta una gran variedad productiva, no quedando excluida de ningún producto y servicio. Principalmente en las áreas bajas y secas, los agricultores han encontrado que se reproduce y maneja fácilmente, presenta buenos rendimientos de leña y postes, y no compite notoriamente con los cultivos adyacentes.
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Devaraj, P. Monograph on Silver Oak ; Grevillea Robusta. International Book Distributors, 1999.

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Grevillea robusta in agroforestry and forestry: Proceedings of an international workshop. Nairobi, Kenya: International Centre for Research in Agroforestry, 1992.

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Okalebo, Jane Asiyo. Optimizing the production of a Zea mays - Grevillea robusta alley cropping system with the WaNuLCAS model using a tabu search heuristic. 2004.

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Części książek na temat "Grevillea robusta"

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Uday, D. N., B. S. Mamatha, D. Sujatha i V. Prakash. "Study on Utilization of Plantation-Grown Timber Species Grevillea robusta (Silver Oak) for Medium-Density Fibre Board". W Wood is Good, 363–73. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3115-1_33.

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Kedir, Miftah F. "Pyrolysis Bio-oil and Bio-char Production from Firewood Tree Species for Energy and Carbon Storage in Rural Wooden Houses of Southern Ethiopia". W African Handbook of Climate Change Adaptation, 1313–29. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_183.

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AbstractThe need for emission reduction for climate management had triggered the application of pyrolysis technology on firewood that yield bio-oil, bio-char, and syngas. The purpose of present study was to select the best bio-oil and bio-char producing plants from 17 firewood tree species and to quantify the amount of carbon storage. A dried and 1 mm sieved sample of 150 g biomass of each species was pyrolyzed in assembled setup of tubular furnace using standard laboratory techniques. The bio-oil and bio-char yields were 21.1–42.87% (w/w) and 23.23–36.40% (w/w), respectively. The bio-oil yield of Acacia seyal, Dodonea angustifolia, Euclea schimperi, Eucalyptus globulus, Casuarina equisetifolia, and Grevillea robusta were over 36% (w/w), which make the total yield of bio-oil and bio-char over 62% (w/w) of the biomass samples instead of the 12% conversion efficiency in traditional carbonization. The calorific value of firewood was 16.31–19.66 MJ kg–1 and bio-oil was 23.3–33.37 MJ kg–1. The use of bio-oil for household energy and bio-char for carbon storage reduced end use emission by 71.48–118.06%, which could increase adaptation to climate change in comparison to open stove firewood by using clean fuel and reducing indoor pollution.
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Parthasarathy, S., G. Thiribhuvanamala, P. Muthulakshmi i K. Angappan. "Diseases of Grevillea robusta (Silver oak)". W Diseases of Forest Trees and their Management, 236–38. CRC Press, 2021. http://dx.doi.org/10.1201/9781003173861-27.

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Streszczenia konferencji na temat "Grevillea robusta"

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S., Dehiya Brijnandan, Pawan Kumar, Meenu i Anil Sindhu. "Green synthesis of silver nanoparticles using Grevillea robusta". W ADVANCES IN BASIC SCIENCE (ICABS 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5122387.

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Ahmad, Rabia, Qamer Faisal i Sajjad Hussain. "Synthesis of silver nano-materials from Grevillea robusta A Cunn (Silver-oak tree) leaves extract and shape directing role of cetyltrimethylammonium bromide". W DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4947678.

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