The flat of the blade: auxin provides the positional cue for unifacial leaf blade flattening
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Flattening
Leaf blade
РАЗЛИЧНЫЕ ПОДХОДЫ К КОЛИЧЕСТВЕННОМУ ОПИСАНИЮ ФОРМЫ ЛИСТОВОЙ ПЛАСТИНКИ РАСТЕНИЙ Резюме.Основываясь на анализе существующих подходов к количественной оценке биологической формы, предлагается итерационный алгоритм поиска меток в изображении листовой пластинки, который позволяет точно описать форму листа.Исходя из этого метода, вводится расстояние, которое равно нулю для геометрически подобных листовых пластин и увеличивается с увеличением различий в их форме.Проведенный с помощью этого показателя кластерный анализ 11 сортов смородины дает основание полагать, что одна только форма листовой пластинки не может служить надежным классификатором сортов плодовых растений.Ключевые слова:
Leaf blade
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The main function of plant field practice teaching system is to analysis leaf blade edge and texture through the computer image processing technology,extract information of leaf blade automatically and then determine the correlative theoretical knowledge of it.Achieve the function through image preprocessing,regional positioning segmentation of leaf blade and leaf identification three parts,it achieved regional positioning segmentation and identification of leaf blade through leaf blade edge and texture.The experimental results show that this method can identify and categorize the leaf blade effectively.
Leaf blade
Identification
Texture (cosmology)
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Flattening
Leaf blade
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This article describes the basic theory of free surface modeling.In the UG environment,according to the initial data point of leaf blade edge and size requirements in accordance with the corresponding,the upper and lower section of leaf blade are made,on above basis scaning on the cross section curves is scanned to form a leaf blade entity of the method in accordance with the direction of leaf blade edge.
Section (typography)
Leaf blade
Free form
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Abstract Thermal spray layers are formed on rough surfaces; however, the flattening process on rough surfaces has not yet been clarified. A mathematical flattening model which takes into account the roughness of the substrate or previously coated layers is proposed in this paper. As a result of surface roughness, the flattening degree and the flattening time decrease with increasing surface roughness in this model. In addition, the characterization of surface roughness is introduced for the flattening model. Several calculated cases of the flattening model are shown.
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The size of local roll flattening and its distribution along the direction of the roll axis in flat rolling were calculated by means of 3‐dimensional finite element method. For analysis of elastic flattening deformation of the roll stack the well‐known classical and analytical solutions are usually employed which were derived from elastic half space theory or two dimensional contact theory. By comparison of results from both the different methods the validity of the classical formulae was examined. Some of the formulae are more appropriate for calculating local flattening along the work roll/strip interface, however, they may result in a great deviation in calculating the flattening along the work roll/ back‐up roll interface, especially for the back‐up roll. Using the Fe model the influence of roll geometry and strip width under a specific rolling force on the flattening was taken into account, which is difficult to be treated with classical models.
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This paper presents a mechanism for impinging deformation of molten droplets after they impinge onto the substrates by simulating plasma-sprayed coatings. The free fall experiments of molten droplets are done on the substrates with different roughness. The flattening process is evaluated by the unevenness and flattening ratio, which are analyzed by a high-speed video camera and image analysis. It was concluded that the surface roughness influences on both the flattening and unevenness ratio and that its influencing degree depends on the droplet properties.
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At Present, the flattening process has been operated by experience and intuition of the expert. On the other hand, the quantification of the flattening condition has been required, and it is urgent to clarify the mechanism of the flattening process.This study carries out the roller leveler flattening for the plate, and it aims at the quantification of the flattening condition, while the mechanism of the flattening process is clarified by surface strain measurement under straightening and contact point observation with the roll, after shape evaluation.As a result, the quality of 3-points bending condition in the top and bottom roll greatly influenced the plate shape by the surface strain comparison of maximum value and roll contact location under flattening, and it became clear that the possible range for flattening had been decided.And, the prospect that the intermesh of the top and bottom roll uniquely sets became possible was obtained as the flattening condition.
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