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| Azadbakht, Mohsen; Torshizi, Mohammad Vahedi; Ziaratban, Armin; Ghajarjazi, Ehsan. |
| In this study, at first the shear parameters including the maximum shear force, shear strength, shear energy and power consumption of canola stem were calculated through force-deformation curve; and then these mechanical properties were determined and predicted using artificial neural network. For the tests, testing machine Instron (Model Santam STM-5) with 50 N load cell was used. Stems were cut at 3 diameter levels (1 to 3, 3 to 5 and more than 5 mm), 3 cutting speed levels (75, 115 and 150 mm/min ), 3 cutting angles (0°, 30° and 60°) and three replicates. Cutting parameters including maximum cutting force, shear strength; cutting energy; consumed power and cutting work were examined. Tests lasted for each stem until the full cut. Data... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canola; Cutting energy; Stem; Shear strength; Power consumption; Artificial Neural Network (ANN). |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3785 |
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| Silva, Andrezza Miguel da; UFRPE; Modesto, Elisa Cristina; UFRRJ; Lira, Carolina Câmara; UFRPE; Santos, Mércia Virginia Ferreira dos; UFRPE; Brasil, Lucia Helena de Albuquerque; UFRPE; Dubeux Júnior, José Carlos Batista; UFRPE. |
| O objetivo deste trabalho foi avaliar as características do pasto e da extrusa de novilhas Girolanda, submetidas a três taxas de lotação, em pastagem de capim Brachiaria decumbens Stapf., em diferentes períodos de avaliação. Foram utilizadas seis novilhas da raça Girolanda e os tratamentos foram constituídos por diferentes taxas de lotação (2, 4 e 6 UA); cada bloco foi formado por três piquetes. O delineamento foi de blocos ao acaso em parcelas subdivididas com medidas repetidas no tempo. A taxa de bocados dos animais variou com o período de avaliação, com valores de 41 bocados min.-1 (Período 1) e 33 bocados min. -1 (Período 3). A taxa de bocados reduziu ao longo dos períodos de pastejo com valores de 41 a 33 bocados min. -1 Já o tamanho do bocado... |
| Tipo: Pesquisa de campo;análise laboratorial |
Palavras-chave: Produção animal; Comportamento animal; Bocado; Colmo; Folha; Material senescente Comportamento animal Bite; Stem; Leaf; Senescent material. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9379 |
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| Azadbakht, Mohsen; Torshizi, Mohammad Vahedi; Ghajarjazi, Ehsan; Ziaratban, Armin. |
| In this study, the canola stalk cutting parameters including modulus of mass density of stalk, special work of useful cutting, coefficient of cutting useful work and crush resistance coefficient were examined. For the tests, testing machine Instron (Model Santam STM-5) with 50 N load cell was used. Cutting was performed with a saw-serrated cutting blade that was attached to the Instron movable jaw. Stems were cut at three diameter levels (1 to 3, 3 to 5 and more than 5 mm), three cutting speed levels (75, 115 and 150 mm/minute), three cutting angles (0°, 30° and 60°) and three replicates. Cutting parameters including modulus of mass density of stalk, special work of useful cutting, coefficient of cutting useful work and crush resistance coefficient... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canola; Cutting; Stem; Modulus; Special work; Coefficient; Useful work; Crush resistance. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3648 |
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| Pace,Marcelo Rodrigo; Botânico,Marli Pereira; Angyalossy,Veronica. |
| Vessel elements in Monocotyledons present morphological differences according to the organ where they occur. Usually such diff erences have been explained from an evolutionary perspective, with few data on how the vessel elements could be infl uenced by the diff erent functions of organs and the growth habits of the plants. To address this question, three vegetative organs of palms of the same genus, Syagrus, growing in similar environments, but with different habits, were analyzed. Accordingly, we aimed to detect whether the vessel elements would present similar features in all species or whether the vessel elements would change according to their different habits. We found that the width and type of perforation plates varied in the same way among all... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Monocotyledons; Tracheary elements; Vegetative organs; Growth habit; Root; Stem; Leaf. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200007 |
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| AKTAS,K.; ÖZDEMIR,C.; ÖZDEMIR,B.. |
| ABSTRACT: Verbascum L. is the largest genus of the family Scrophulariceae and includes several species are of medicinal importance. The high morphological diversity among the species of the genus Verbascum causes problems in the delimitation of the species. In this study, morphological, anatomical, palynological and seed properties of Verbascum exuberans were investigated. It is a local endemic restricted to the provinces of Manisa and Izmir in West Anatolia. In the root cross-section, the xylem elements occupy a considerable area. The upper part of the epidermis cells in the stem cross-section is covered a distinct cuticle layer. The main vein of the leaf is shapped as bicollateral bundle. Idioblasts were not observed in the epidermis of the leaves of V.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf; Pollen; Root; Stem; Mullein. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100203 |
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| Santos, Manoel Eduardo Rozalino; Universidade Federal de Uberlândia; Silveira, Márcia Cristina Teixeira; Empresa Brasileira de Pesquisa Agropecuária; Gomes, Virgílio Mesquita; Universidade Estadual de Montes Claros; Fonseca, Dilermando Miranda da; Universidade Federal de Viçosa; Sousa, Braulio Maia de Lana; Universidade Federal de Sergipe; Santos, Anselmo de Deus; Universidade Federal de Viçosa. |
| Current experiment identified the height of signal grass {Urochloa decumbens (Stapf) R. D. Webster cv. Basilisk [syn. Brachiaria decumbens Stapf cv. Basilisk]} at the beginning of deferment that provided an appropriate pasture structure and potential selectivity by cattle on deferred pastures. Four pasture heights at the beginning of deferment (10, 20, 30 and 40 cm) and two forage samples (available on pasture and simulated grazing) were studied. The experimental design was set in completely randomized blocks, with two replications, in a split-plot arrangement. Higher percentage of live leaf blades and lower percentage of live stems and senescent forage were recorded in the forage sample from simulated grazing. The increase in pasture height increased the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing Brachiaria decumbens; Stem; Leaf; Senescent forage; Grazing. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/20421 |
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| PINHEIRO,CARLOS G.; OLIVEIRA,JOÃO MARCELO S. DE; HEINZMANN,BERTA M.. |
| Abstract The aim of this study was to describe the structural characterization of Hesperozygis ringens (Benth.) Epling vegetative organs. For this purpose, leaves, stems and roots of the endangered Lamiaceae were collected from a population located in Santo Antão, Santa Maria municipality, Rio Grande do Sul, Brazil. Results demonstrated that the H. ringens leaf blade presents glandular and non-glandular trichomes as well as two morphs of diallelocytic stomata, which are usually found above the epidermis level. The petiole is concave on ventral face and convex on its dorsal face, containing glandular and non-glandular trichomes as well as stomata in the epidermis. These types of trichomes were also detected in the stem. In addition, the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lamiaceae; Leaf blade; Petiole; Root; Stem. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602887 |
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| Souza,Luiz Antonio de; Moscheta,Ismar Sebastião; Mourão,Káthia Socorro Mathias; Albiero,Adriana Lenita Meyer; Iwazaki,Maísa de Carvalho; Oliveira,Jonathas Henrique Georg de; Rosa,Sônia Maciel da. |
| Piperaceae species of forest remnants of Maringá, Paraná, Brazil present vegetative propagation through root or stem (stolon). This reproduction type was verified in Piper amalago L., P. arboreum Aublet, P. xylosteoides (Kunth) Steud., Peperomia parnassifolia Miq. and Ottonia martiana Miq. Root and stem branches of these species were analyzed anatomically. Results indicated that the vegetative propagation in Piperaceae should be studied in other forests. New and additional studies should be made if the structural variations were induced environmentally or fixed genetically. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Piperaceae; Vegetative reproduction; Stolon; Stem; Root. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000600006 |
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