Zobrazeno 1 - 10
of 14
pro vyhledávání: '"D H Pritchard"'
Publikováno v:
Physics in Medicine and Biology. 37:2309-2318
The tissue air ratios far 60Co gamma radiation tabulated in the British Journal of Radiology, supplement 17 are shown to be low by about 2%. A theoretical argument implies that this is due to an error in the measurement of peak scatter factors. Monte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5810c91613eb44bb72499d9618c562f9
https://doi.org/10.1088/0031-9155/37/12/013
https://doi.org/10.1088/0031-9155/37/12/013
Publikováno v:
Australian veterinary journal. 69(2)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::731bbc7d5b9d6a85c58a6ee49e2ce3ae
https://pubmed.ncbi.nlm.nih.gov/1632732
https://pubmed.ncbi.nlm.nih.gov/1632732
Publikováno v:
Research in veterinary science. 48(2)
Two groups of weanling rats were treated with swainsonine, the toxin responsible for 'pea-struck' and locoism in grazing animals, for 21 days. The initial dose rate was 46 mg kg-1 d-1 in one group, and 7.6 mg kg-1 d-1 in the other. Food and water int
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::9743ef4cd1c0ba855a4bd075998e8237
https://pubmed.ncbi.nlm.nih.gov/2110378
https://pubmed.ncbi.nlm.nih.gov/2110378
Autor:
D. H. Pritchard
Publikováno v:
IEEE Transactions on Consumer Electronics. :467-478
The US Color Television Standards represent masterful "tradeoffs" among psychophysical effects and electronic implementation techniques.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bebb2c729dfc4edd951927331e0eb73
https://doi.org/10.1109/tce.1977.266846
https://doi.org/10.1109/tce.1977.266846
Autor:
J. J. Gibson, D. H. Pritchard
Publikováno v:
SMPTE Journal. 89:111-120
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7709f1724691946ad59012d6056c6131
https://doi.org/10.5594/j00527
https://doi.org/10.5594/j00527
Publikováno v:
IEEE Transactions on Consumer Electronics. :94-99
Since the inception of color TV twenty-five years ago, there has been a continual improvement in the performance and features available in consumer television receivers. Advancements in circuit and device technologies have made their way from the res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0eb0054b2af9e23681805f98888810f8
https://doi.org/10.1109/tce.1980.273323
https://doi.org/10.1109/tce.1980.273323
Publikováno v:
IEEE Transactions on Consumer Electronics. :352-360
The Buried-Subcarrier color signal encoding and decoding system was developed specifically for the RCA VideoDisc.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9a97672e43d5f4b19d42394a9380e11
https://doi.org/10.1109/tce.1981.273457
https://doi.org/10.1109/tce.1981.273457
Publikováno v:
IEEE Transactions on Broadcast and Television Receivers. :82-90
The advent of cablecasting has brought about renewed interest in the possiblities for new and improved performance in color television systems. The closed circuit environment, new technology for wide-bandwidths, new large area displays, and better si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e30bcf3131e05ea862ab6dc98b09c0a
https://doi.org/10.1109/tbtr1.1972.299644
https://doi.org/10.1109/tbtr1.1972.299644
Publikováno v:
Radiocarbon. 5:34-38
The dating equipment at the National Physical Laboratory was completed by the summer of 1960. A series of calibration and intercomparison measurements was undertaken however, using the NBS oxalic acid reference standard, a modern wood standard (1850
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5800b7d416b0e1fba8b4942a1ae769a
https://doi.org/10.1017/s0033822200036766
https://doi.org/10.1017/s0033822200036766
Autor:
D. H. Pritchard, R. N. Rhodes
Publikováno v:
Transactions of the IRE Professional Group on Broadcast and Television Receivers. :1-22
This paper presents a discussion of the problems and techniques involved in the design and development of color television receiver demodulators. The basic concepts of a simultaneous subcarrier color system are described as relating to the receiver d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abae81f99b6ecccb82cf55ed929756be
https://doi.org/10.1109/tpgbtr.1953.4505065
https://doi.org/10.1109/tpgbtr.1953.4505065