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Genetic engineering of Indica rice in support of sustained production of affordable and high quality food in developing countries (1955)

Potrykus, I. ; Burkhardt, P. K. ; Datta, S. K. ; [et al.]

Springer

Euphytica 85 (1955), S. 441-449

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ISSN: 1573-5060

Keywords: Oryza sativa ; Indica-type rice ; genetic engineering ; vitamin A endosperm ; insect resistance ; virus resistance ; fungus resistance ; essential amino acids

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Summary Indica-type rice provides the staple food for two billion people in Third World countries. Several problems involved in the stable and sustained production of high quality food cannot be solved by traditional breeding. Methods have been established for gene transfer to Indica rice breeding lines to study possible contributions from genetic engineering. Experiments are in progress on the development of transgenic resistance towards Yellow Stem Borer, resistance towards Rice Tungro Virus, accumulation of provitamin A in the endosperm, increase of essential amino acids in the endosperm such as lysine, cysteine and methionine and resistance towards fungal pests such as Rice Blast and Sheath Blight. Transgenic clones from Indica rice breeding lines have been recovered from several of the approaches mentioned, some of which have been regenerated to plants.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00023978

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Numerical investigation of confined wakes behind a square cylinder in a channel (1992)

Mukhopadhyay, A. ; Biswas, G. ; Sundararajan, T.

Chichester : Wiley-Blackwell

International Journal for Numerical Methods in Fluids 14 (1992), S. 1473-1484

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ISSN: 0271-2091

Keywords: Bluff body ; Wake ; Vortex shedding ; Unsteady periodic flow ; Engineering ; Engineering General

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: The structure of confined wakes behind a square cylinder in a channel is investigated via the numerical solution of the unsteady Navier-Stokes equations. Vortex shedding behind the cylinder induces periodicity in the flow field. Details of the phenomenon are simulated through numerical flow visualization. The unsteady periodic wake can be characterized by the Strouhal number, which varies with the Reynolds number and the blockage ratio of the channel. The periodicity of the flow is, however, damped in the downstream region of a long duct. This damping may be attributed to the influence of side walls on the flow structure.

Additional Material: 10 Ill.