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Rao T . V . Ramana,Yash Dave,J . A . Inamdar 한국식물학회 1987 Journal of Plant Biology Vol.30 No.3
Morpho-histogenesis of fruit sculpture and dechiscence in Thespesia populnea is described. The fruit wall is differentiated into epicarp, mesocarp and endocarp. The epicarp is stony, rind-like, 30 to 35 layers thick and derived from outer epidermis, sub-epidermis and ground parenchyma of the ovary wall. The spherical and/of tangentially elongated, thick walled cells of epicarp are interspersed with radial bands of sclereids. The mesocarp is a product of the inner zone of ground parenchyma. At maturity 20 to 25 layers of thin walled parenchyma of mesocarp appear sinuous of disorganized. The innermost 1 to 3 layers of ground parenchyma and sub-epidermis and inner epidermis form 35 to 40 layers thick endocarp. Due to the differentiation of fibrous tissue in the projection of median plane of carpel wall and a complete ring of fibrous zone in the endocarp, the dry capsule of Thespesia populnea dehises partially in loculicidal fashion.
Experimental and Analytical Study for Plastic Moment Capacity of Beam–Beam Splice Connection
V. Ramana Kollipara,T. D. Gunneswara Rao 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.4
In this paper, both experimental and analytical investigations are presented for the evaluation of yield moment capacity of the extended end plate connections under pure fl exural loading. Four point loading system is adopted to simulate the pure bending condition. For the experimental study a beam–beam splice connection is made by joining hollow tubular sections (HTS) using bolted end plate connections. The parameters varied for the experimental investigation are cross sectional dimensions of HTS, thickness of end plate, diameter of bolt and thickness of weld. In the analytical study, yield line theory is used for the prediction of yield moment equations of the connection for a particular modes of failure. Finally, the proposed analytical equations are validated by comparing the analytical results with the experimental results. It is found that the experimental results are in proximity with the analytical results.
아욱목 (目) 식물의 모용에 (毛茸) 의한 분류학적 소견
J . A . Inamdar,R . Balakrishna Bhat,T . V . Ramana Rao 한국식물학회 1983 Journal of Plant Biology Vol.26 No.3
Structure, ontogeny, classification and taxonomic significance of trichomes have been studied in 39 genera and 125 species of the selected families in Malvales. They were studied on both vegetative and floral organs. There are nine types of eglandular and eight of glandular trichomes. The trichomes were classified on the basis of their form, structure and contents. All of them originated from a single papillate hair initial. According to the trichome data, the Malvales was confirmed as a natural order with 5 homogenous families: Malvaceae, Bombacaceae, Sterculiaceae, Tiliaceae, and Elaeocarpaceae.
Inamdar J . A .,R . Balakrishna Bhat,T . V . Ramana Rao 한국식물학회 1983 Journal of Plant Biology Vol.26 No.1
Internodal vessel elements are studied in 20 genera, 75 species and 33 cultivars of Hibiscus rosa-sinensis beloning to the Malvaceae. The minimum and maximum length and diameter range from 79∼466 and 14∼88㎛, respectively. The vessel elements are either cylindrical, fusiform, conical, clavate, oval, column-, drum-, fish and cup-like or erratic. Perforation plates are exclusively simple in all the species investigated, except occasionally scalariform in varieties of Hibiscus roas-sinensis. In most of the species studied vessel elements have predominantly two perforation plates or occasionally one and three. Adjacent side wall thichening is commonly simple and border pitted, mixed, scalariform, helical and reticulate. The vessel elements vary in their size, shape, number and inclination of perforation plates and adjacent wall thichening.