Results 71 to 80 of about 743 (100)
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1980 International Electron Devices Meeting, 1980
The operating characteristics of a gyrotron travellng wave tube (gyro-TWT) operating at C-band are reported. Detailed testing showed that at higher beam voltage and current and with a magnetic field profile increasing in magnitude toward the rf output window, the output power could be increased from 50 kW at 16.6% efficiency to 128 kW at 24% efficiency.
P.E. Ferguson, R. Symons
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The operating characteristics of a gyrotron travellng wave tube (gyro-TWT) operating at C-band are reported. Detailed testing showed that at higher beam voltage and current and with a magnetic field profile increasing in magnitude toward the rf output window, the output power could be increased from 50 kW at 16.6% efficiency to 128 kW at 24% efficiency.
P.E. Ferguson, R. Symons
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Scanning Electron Microscopy of C-Banding [PDF]
Zoological Science, 1996 The mechanism of C-banding was analyzed on the basis of the structural changes of the 30 nm chromatin fibre using scanning electron microscopy (SEM). SEM of non-banded metaphase spreads of L-cells revealed chromosomes consisting of 30 nm chromatin fibre loops along the entire length.
Koji Bunno +2 more
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PHARS: a C-Band Airborne SAR [PDF]
20th European Microwave Conference, 1990, 1990 For the study of microwave scattering of vegetation, forests, sea and other targets ground-based and airbome scatterometers and a digital SLAR system (X-band) are used since many years in The Netherlands. All these systems are absolutely calibrated.
Hoogeboom, P. +3 more
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10th International Conference on Digital Satellite Communications (ICDSC-10), 1995 The provision of a portable C-band terminal communicating with large hub stations through an 18 MHz band of INTELSAT V transponders is investigated. The considered multiple hub network with distributed control can support up to 18 2.4 kbit/s simultaneously active users equipped with 0.8 m antennas at remote sites.
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The reaction to c-banding of c-banded constituents during mitotic cycle ofCrepis capillaris [PDF]
The Botanical Magazine Tokyo, 1989 The reaction to C-banding was investigated throughout the mitotic cycle ofCrepis capillaris (2n=6): (1) 18–22 C-bodies or C-bands were found during mid telophase and interphase to prophase and metaphase, and also 12–14 at late anaphase to early telophase in the mitotic cycle.
Junko Noguchi, Toshihide Ohno
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A high-resolution C-banding technique
Canadian Journal of Genetics and Cytology, 1986A high-resolution C-banding technique is described. The major advantages of this method are its simplicity and reliability. Because this technique allows the recognition of unusual C-band heteromorphisms, it can be very useful in population cytogenetic studies.Key words: karyotyping, banding (C), heterochromatin, high resolution.
Marylinne Keushnig +2 more
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Assessment of the Feasibility of GNSS in C-Band
26th International Communications Satellite Systems Conference (ICSSC), 2008There is an interest in exploring the possible use for GNSS applications of the frequency band 5000 – 5030 MHz. Considering the increasing number of GNSS systems sharing the Lband spectrum and the power flux density limitations affecting the GNSS reserved frequency bands, there is an interest to look at new frequency bands.
COLZI E. +8 more
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Measurement of C-bands in human chromosomes
Computers in Biology and Medicine, 1975Abstract A technique is presented for obtaining quantitative measurements of C-bands in human chromosomes using a computer-controlled microscope and scanner. Relative efficiencies of various procedures for C-band and chromosome area and integrated optical density measurement and the sources and extent of variance in C-band measurements, whether ...
I. J. Lauder +3 more
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Even-harmonic C-band modulator
IEEE Transactions on Microwave Theory and Techniques, 2005Direct modulation at microwave frequencies promises the advantages of compact size, low cost, and relatively simple system design. In this paper, a novel architecture of a direct-vector C-band modulator is described. In particular, a subharmonic mixer is used to overcome the high carrier leakage that is associated with conventional fundamental ...
Di Alessio, F. L. +2 more
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1994
Maize is one of the most important cereal crops to be extensively characterized cytologically. McClintock (1929) gave the first indication of heterochromatinous knobs within pachytene maize chromosomes. Proceeding from chromosome morphology and data on the location of knobs, she provided early identification of all maize chromosomes.
E. K. Gubar, V. A. Kunakh
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Maize is one of the most important cereal crops to be extensively characterized cytologically. McClintock (1929) gave the first indication of heterochromatinous knobs within pachytene maize chromosomes. Proceeding from chromosome morphology and data on the location of knobs, she provided early identification of all maize chromosomes.
E. K. Gubar, V. A. Kunakh
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