Technique could dramatically diminish hunger in Africa
Corn harvests on experimental plots and in farmers’ fields in four East and Southern African countries have yielded striking results in long-term trials of an innovative witchweed-fighting technology developed by a Weizmann Institute scientist in collaboration with researchers at CIMMYT (the Spanish acronym for the International Maize and Wheat Improvement Center). The new technology will be presented to seed producers, government representatives, regional scientists and regulatory agencies at a CIMMYT-sponsored meeting in Kisumu, Kenya on July 4-6, 2002.
The meeting, entitled "A Herbicide-Resistant Maize Method for Striga Control: A Meeting to Explore the Commercial Possibilities," will demonstrate the results of the new technology in the field, present the current status of this herbicide-resistant maize technology, assess its commercial and regulatory aspects and evaluate its future. The meeting is designed to expose interested parties in the public and private sectors to a powerful new weapon that could dramatically alleviate the Striga scourge.
Jeffrey J. Sussman | EurekAlert!
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Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
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Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
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