Zobrazeno 1 - 10
of 63
pro vyhledávání: '"M.L. Zimmerman"'
Autor:
S.L. Friedman, M.L. Zimmerman
Publikováno v:
Journal of Food Science. 65:1391-1394
Three main types of rodent filth (rodent excreta pellets, gnawing, and nesting material) are described and identification procedures are listed. Suspect excreta pellets that may be encountered in foods from various animals are described in detail and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa592f569fb052f009cbe64f093a0c2c
https://doi.org/10.1111/j.1365-2621.2000.tb10618.x
https://doi.org/10.1111/j.1365-2621.2000.tb10618.x
Autor:
R.Q. Lee, M.L. Zimmerman
Publikováno v:
Proceedings of IEEE Antennas and Propagation Society International Symposium.
Mutual coupling can significantly affect the far-field pattern of an array antenna. The finite difference time domain (FDTD) method may be used to determine the far-field pattern with mutual coupling effects included. This is done for three patch arr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ba2d2bef1934878db22fe3a482e3a49
https://doi.org/10.1109/aps.1993.385451
https://doi.org/10.1109/aps.1993.385451
Autor:
M.L. Zimmerman, R.Q. Lee
Publikováno v:
Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.
Experimenters using NASA's ACTS satellite will have a need for a small, portable ground terminal. The development of a dual frequency (20,30 GHz) passive array for this application is discussed. The array uses rectangular microstrip patches which pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff1e934225c87f8d9c32736551d66dda
https://doi.org/10.1109/aps.1994.408183
https://doi.org/10.1109/aps.1994.408183
Publikováno v:
Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.
Microstrip antennas with stacked parasitic elements have been demonstrated to have broad bandwidth and high gain. The broad band characteristics of microstrip antennas with stacked parasitic elements have been studied extensively and are now well und
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e6b1a6e67f9ed8d9519d3729fefa66f
https://doi.org/10.1109/aps.1994.407712
https://doi.org/10.1109/aps.1994.407712
Publikováno v:
Antennas and Propagation Society Symposium 1991 Digest.
The characteristics of a hexagonal array formed by seven element hexagonal subarrays are described. It is pointed out that a hexagonal array formed with elements in a grid of equilateral triangles requires fewer elements than with a rectangular arran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08bf36b0792b324eee633ef377cf1379
https://doi.org/10.1109/aps.1991.175048
https://doi.org/10.1109/aps.1991.175048
Autor:
P. Mallasch, M.L. Zimmerman
Publikováno v:
IEEE Antennas and Propagation Society International Symposium. 1995 Digest.
Presently, most computer code development in the computational electromagnetics (CEM) community is done in the structured programming paradigm, particularly with the FORTRAN language. Other segments of the programming community have switched to the o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8a0b979bfe9895bedc36047408e29a0
https://doi.org/10.1109/aps.1995.530210
https://doi.org/10.1109/aps.1995.530210
Publikováno v:
IEEE Transactions on Antennas and Propagation. 40:1264-1266
Frequency selective surfaces (FSS) are often used in spaceborne applications of reflector antennas because of their ability to allow multiple feeds to utilize the same reflector dish. The problems inherent in evaluating the FSS separately from the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acb45fbea6a9876401f7d3b334b407f9
https://doi.org/10.1109/8.182463
https://doi.org/10.1109/8.182463
Autor:
Shung-Wu Lee, M.L. Zimmerman
Publikováno v:
IEEE Transactions on Antennas and Propagation. 38:940-942
An important and frequently used parameter in the design of a feed for a reflector antenna is the spillover loss. A set of spillover curves is presented for several common feeds, namely circular waveguides with TE/sub 11/ or TE/sub 21/ excitations, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14995189fb483b3903046e1ede558a36
https://doi.org/10.1109/8.55596
https://doi.org/10.1109/8.55596
Publikováno v:
IEEE Antennas and Propagation Society International Symposium 1992 Digest.
A multibeam antenna which will be based on a Mars orbiting satellite has been proposed for the Space Exploration Initiative. This antenna would be used for a variety of purposes; besides communicating with fixed bases, the antenna would simultaneousl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7aad0782d82f60a329c70dfaa02cc9e7
https://doi.org/10.1109/aps.1992.221644
https://doi.org/10.1109/aps.1992.221644
Publikováno v:
Solid State Communications. 13:1825-1828
Crystals of KCl and KI irradiated to fluences of the order of 1016 protons/cm2 exhibit an anomalous dip in F-center profile near the end of the proton penetration depth. This effect is shown to arise from the destruction of F centers by hydrogen capt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a6a584614cdb87c5a5a7e317a10f19b
https://doi.org/10.1016/0038-1098(73)90738-2
https://doi.org/10.1016/0038-1098(73)90738-2