Klara Fischer

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Small-scale subsistence farmers in South Africa have been introduced to genetically modified (GM) crops for more than a decade. Little is known about i) the extent of transgene introgression into locally recycled seed, ii) what short and long-term ecological and socioeconomic impacts such mixing of seeds might have, iii) how the farmers perceive GM crops,(More)
1 Department of Urban and Rural Development, Swedish University of Agricultural Sciences, P.O. Box 7012, SE-750 07 Uppsala, Sweden 2 Department of Environmental Strategies Research, KTH–Royal Institute of Technology, Drottning Kristinas vag 30 III, SE-100 44 Stockholm, Sweden; E-Mail: elisabeth.ekener.petersen@abe.kth.se 3 Department of Animal Breeding and(More)
The Hyper-X Program, NASA's focused hypersonic technology program jointly run by NASA Langley and Dryden, is designed to move hypersonic, air-breathing vehicle technology from the laboratory environment to the flight environment, the last stage preceding prototype development. The Hyper-X research vehicle will provide the first ever opportunity to obtain(More)
Gene flow in agricultural crops is important for risk assessment of genetically modified (GM) crops, particularly in countries with a large informal agricultural sector of subsistence cultivation. We present a pollen flow model for maize (Zea mays), a major staple crop in Africa. We use spatial properties of fields (size, position) in three small-scale(More)
We have used techniques of nonlinear dynamics to compare a special model for the reversals of the Earth's magnetic eld with the observational data. Although this model is rather simple, there is no essential diierence to the data by means of well-known characteristics, such as correlation function and probability distribution. Applying methods of symbolic(More)
Due to He-3 shortages as well as other fundamental limitations of 60-y nuclear power technology being adapted for present-day sensor needs, transformational nuclear particle sensor system developments have sponsored by DARPA, DoE, DHS and NSF. These systems dispense with need for conventional He-3, liquid scintillation or solid-state devices. The novel(More)
Alcamo, J. P. 2000. Personal communications on global change and global scenarios of water use and availability: An application of water GAP. Kassel, Germany: Center for Environmental System Research (CESR), University of Kassel. Alcamo, J., P. Döll, F. Kaspar, and S. Siebert. 1998. Global change and global scenarios of water use and availability: An(More)
The development of directional-position sensing neutron detector technologies has the potential to embody transformational impact on to the field of nuclear security and safeguards. Directional neutron detectors offer vastly superior background suppression enabling the detection of smaller quantities of special nuclear materials (SNM) at larger standoffs.(More)
This study explored the social science-orientated literature on genetically modified (GM) crops in Europe and compared it with the corresponding literature on GM crops in African contexts, in order to determine the nature and extent of north-south cross-fertilisation in the literature. A total of 1625 papers on GM crops and agriculture falling within the(More)
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