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71.
V. O. Rapoport D. S. Kotik L. F. Mironenko S. N. Mityakov 《Radiophysics and Quantum Electronics》1994,37(6):507-513
The results of an investigation of VLF radiation generated by a mobile ionospheric source are presented. Radiation at frequency F appears due to the operation of two powerful HF transmitters at frequencies f and f±F fed to two space-separated antennas. The intensity of the signals received at the ground depends on the location of the source with respect to the receiving point and is determined by the sign and value of the frequency shift F. The proposed model of the phenomena satisfactorily explains the experimental results.Scientific-Research Institute of Radiophysics. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 37, No. 6, pp. 783–792, June, 1994. 相似文献
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We consider a method of radio-acoustic sounding of the atmosphere using millimeter-wave radars based on powerful masers (gyrotrons) operated in the regime of intrapulse chirp modulation. The proposed method makes it possible to measure the atmospheric temperature profile without any modification of the meteoradar transceiving system and to improve significantly the capabilities of remote monitoring of the atmosphere. 相似文献
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B Frydman S Reil M E Despuy H Rapoport 《Journal of the American Chemical Society》1969,91(9):2338-2342
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A. Wakolbinger Ch. Scholz Anatol Rapoport 《Mathematical Methods of Operations Research》1987,31(4):B134-B137
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A simple, environmentally friendly process was developed for surface hydrophobization of cellulose-rich waste to improve their compatibility with recycled polypropylene (rPP), helping reduce costs while recycling environmentally problematic waste such as solid olive waste (also called olive pomace). In this study, an improvement of the interfacial bonding strength between the hydrophilic waste particles and the hydrophobic matrix was achieved by surface hydrophobization of the waste using a ring-opening polymerization reaction of epoxidized soy-bean oil (ESBO) with SnCl2 as a catalyst. The treatment on cellulose based filter paper led to a contact angle of 128°. The composite containing treated olive pomace has shown an increase in the elongation of 92% and an increase in the stress at yield of 15%, indicating improved compatibility. 相似文献