In this paper, we analyze the insect resistance management (IRM) plan put in place by the US Environmental Protection Agency (EPA) to delay the evolution of resistance to Bt corn in natural populations of the European corn borer, Ostrinia nubilalis Hübner. This IRM plan is the most impressive mandatory IRM system ever developed. It forms a coherent whole and includes mandatory refuges, actions to increase growers' compliance and a program for monitoring the evolution of resistance. However, our analysis suggests that two components of this IRM plan are not entirely satisfactory: growers' compliance and monitoring of the evolution of resistance. Moreover, the implementation of these two components of IRM has been required of the registrants, whose incentives for IRM are probably lower than the social optimum. Our analysis suggests that alternatives to the IRM plan currently in place could improve these two components.
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http://dx.doi.org/10.1016/j.jenvman.2005.01.019 | DOI Listing |
Plants (Basel)
October 2024
Faculty of Agronomy, Jilin Agricultural University, Changchun 130118, China.
Under the one-season-a-year cropping pattern in Northeast China, continuous cropping is one of the main factors contributing to the degradation of black soil. Previous studies (on maize-soybean, maize-peanut, and maize-wheat intercropping) have shown that intercropping can alleviate this problem. However, it is not known whether intercropping is feasible for maize and rice under dry cultivation, and its effects on yield and soil fertility are unknown.
View Article and Find Full Text PDFCancer Radiother
December 2024
Department of Physics, centre Eugène-Marquis, 35000 Rennes, France.
Purpose: The purpose of the study was to evaluate the dosimetric impact of sexual-sparing radiotherapy for prostate cancer, with magnetic resonance-only treatment planning.
Material And Methods: Fifteen consecutive patients receiving prostate cancer radiotherapy were selected. A synthetic CT was generated with a deep learning method from each T2-weighted MRI performed at the time of treatment planning.
Adv Healthc Mater
January 2025
School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, China.
Cancer Radiother
April 2024
Institut du cancer de Montpellier, 208, avenue des Apothicaires, 34298 Montpellier, France; Fédération universitaire d'oncologie radiothérapie d'Occitanie Méditerranée (FOROM), 208, avenue des Apothicaires, 34298 Montpellier, France; Inserm, U1194 IRCM, 208, avenue des Apothicaires, 34298 Montpellier, France.
Adrenocortical carcinoma is a malignant tumor with a poor prognosis and a frequent metastatic extension. In very rare cases, a cardiac metastatic disease may occur, and surgical resection is essential for its management. MR-guided stereotactic radiotherapy is an attractive radiotherapy modality for the treatment of mobile thoracic tumors, enabling the target to be monitored continuously during irradiation, while the dosimetric plan can be adapted daily if necessary.
View Article and Find Full Text PDFPhys Med Biol
February 2024
Technical University of Munich (TUM), TUM School of Natural Sciences, Physics Department, James-Franck-Str. 1, D-85748 Garching, Germany.
For fast neutron therapy with mixed neutron and gamma radiation at the fission neutron therapy facility MEDAPP at the research reactor FRM II in Garching, no clinical dose calculation software was available in the past. Here, we present a customized solution for research purposes to overcome this lack of three-dimensional dose calculation.The applied dose calculation method is based on two sets of decomposed pencil beam kernels for neutron and gamma radiation.
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