The relationship of electron plasma oscillations to type III radio emissions and low-energy solar electrons

Solar Physics ◽  
1976 ◽  
Vol 46 (2) ◽  
pp. 459-459 ◽  
Author(s):  
D. A. Gurnett ◽  
L. A. Frank
Keyword(s):  
Electron Plasma ◽  
Low Energy ◽  
Plasma Oscillations ◽  
Radio Emissions ◽  
Type Iii ◽  
Relationship Of ◽  
The Relationship

INFLUENCE OF STRAIN AND SEX ON THE RELATIONSHIP OF PROTEIN TO ENERGY IN THE RATIONS OF GROWING AND FINISHING BACON PIGS

1959 ◽  
Vol 39 (1) ◽  
pp. 102-114 ◽  
Author(s):  
J. P. Bowland ◽  
R. T. Berg
Keyword(s):  
Feed Efficiency ◽  
Carcass Characteristics ◽  
Strain Differences ◽  
High Energy ◽  
Low Energy ◽  
High Protein ◽  
Growing Period ◽  
Strain Interaction ◽  
Relationship Of ◽  
The Relationship

Rations varying in energy (65 to 79 per cent TDN or 69 to 88 per cent apparent digestible energy) and protein (13 to 21 per cent) were studied in two experiments with 120 pigs of four strains. Rate of liveweight gain tended to be fastest in pigs fed high energy-high protein rations throughout. Males gained more rapidly than females, with strain differences being evident. Strain × sex interactions in rate of gain were present in both the growing and finishing period, with a ration × strain interaction present in the growing period. There was an indication that in the growing period pigs on high energy, particularly high energy-high protein rations ate more than pigs fed low energy rations. In the finishing period low energy rations were consumed at a higher rate than high energy rations with protein level having no influence on feed intake. In the growing period to 110 pounds, high protein rations resulted in improved feed efficiency as compared to medium protein rations, while in the finishing period to market weight high energy rations were more efficient than low energy rations. There was evidence that high protein alone or in combination with high energy rations also improved efficiency of feed utilization in the finishing period. Female pigs required less feed per pound gain than male pigs in the finishing period. High energy rations resulted in increased dressing percentage and generally inferior carcasses. There was an indication that high protein rations resulted in leaner carcasses. Carcass length was not influenced by ration. Carcasses from female pigs excelled those from male pigs in all factors measured except carcass length. Strain differences in carcass characteristics existed but no appreciable strain × ration interactions were noted.

scholarly journals Low-frequency ionospheric sounding with Narrow Bipolar Event lightning radio emissions: energy-reflectivity spectrum

2008 ◽  
Vol 26 (7) ◽  
pp. 1793-1803 ◽  
Author(s):  
A. R. Jacobson ◽  
R. Holzworth ◽  
X.-M. Shao
Keyword(s):  
Lightning Discharge ◽  
Low Frequency ◽  
Lower Ionosphere ◽  
Angle Of Incidence ◽  
Radio Emissions ◽  
Statistical Variation ◽  
Reflection Height ◽  
D Region ◽  
Relationship Of ◽  
The Relationship

Abstract. We analyze data on radio-reflection from the D-region of the lower ionosphere, retrieving the energy-reflection coefficient in the frequency range ~5–95 kHz. The data are the same as developed for a recent study of ionospheric-reflection height, and are based on recordings of powerful (multi-Gigawatt) radio emissions from a type of narrow (~10 μs) lightning discharge known as "Narrow Bipolar Events". The sequential appearance of first the groundwave signal, and then the ionospheric single-hop reflection signal, permits us to construct the energy-reflection ratio. We infer the energy reflection's statistical variation with solar zenith angle, angle-of-incidence, frequency, and propagation azimuth. There is also a marginally-significant response of the energy reflectivity to solar X-ray flux density. Finally, we review the relationship of our results to previous published reports.

scholarly journals A study on the relationship of type III radio bursts CME and solar flares during the active period October-November 2003

2008 ◽  
Vol 4 (S257) ◽  
pp. 361-363
Author(s):  
Michaella Thanassa ◽  
Eleftheria Mitsakou ◽  
Panagiota Preka-Papadema ◽  
Xenophon Moussas ◽  
Panagiotis Tsitsipis ◽  
...  
Keyword(s):  
Solar Flares ◽  
Relativistic Electrons ◽  
Active Period ◽  
Radio Bursts ◽  
Characteristic Type ◽  
Type Iii ◽  
Intense Activity ◽  
Relationship Of ◽  
The Relationship

AbstractWithin a period of intense activity (20 October to 5 November 2003), the injection and propagation of near relativistic electrons, resulted in hundreds of type III bursts recorded by the ARTEMISIV radio spectrograph (20–650 MHz). For a number of these type III events association with GOES SXR/Hα flare and/or SOHO/LASCO CME was established. We study the variation of characteristic type III parameters and their relationship with features of the associated flares and/or CMEs.

scholarly journals The Association of Solar Radio Bursts of Spectral Type III with Chromospheric Flares

1957 ◽  
Vol 10 (4) ◽  
pp. 483 ◽  
Author(s):  
RE Loughhead ◽  
JA Roberts ◽  
Marie K McCabe
Keyword(s):  
Spectral Type ◽  
Solar Flares ◽  
Solar Radio ◽  
Radio Bursts ◽  
Radio Observations ◽  
Solar Radio Bursts ◽  
Type Iii ◽  
Class 1 ◽  
Relationship Of ◽  
The Relationship

The relationship of radio bursts of spectral type III to solar flares is investigated by comparing simultaneous optical and radio observations. Over 300 flares are examined, 85 per cent. of which are microflares (class 1?). About 20 per cent. of the flares are associated with type III events, while more than 60 per cent. of the bursts recorded occur during the lifetime of a flare. These bursts tend to occur near the beginning of the flare or even to precede it slightly.

scholarly journals The Polarization of Type V Bursts

1980 ◽  
Vol 86 ◽  
pp. 333-338 ◽  
Author(s):  
D.E. Gary ◽  
S. Suzuki ◽  
G.A. Dulk
Keyword(s):  
Statistical Study ◽  
The Sun ◽  
Frequency Range ◽  
Type Iii ◽  
Brightness Temperatures ◽  
Type V ◽  
Relationship Of ◽  
The Relationship

From observations with the Culgoora spectropolarimeter operating in the frequency range 24–200 MHz, we find that Type V bursts are often polarized in the opposite sense from the preceding Type III bursts. We present here the results of a statistical study of how frequently this occurs and the relationship of such polarization reversals to the position of the source on the disk of the Sun. We then examine two possible reasons for the reversal of polarization. In a paper published elsewhere (Dulk et al., 1979) we give a more detailed description and include observations of source sizes, positions and brightness temperatures of Type III-V bursts.

scholarly journals On the Propagation of the Electrons Related to Type III Bursts

1980 ◽  
Vol 86 ◽  
pp. 327-327 ◽  
Author(s):  
G.V. de Genouillac ◽  
D.F. Escande
Keyword(s):  
Solar Corona ◽  
Electromagnetic Waves ◽  
Solar Radio ◽  
Interplanetary Medium ◽  
Electron Plasma ◽  
Radio Bursts ◽  
Solar Radio Bursts ◽  
Plasma Oscillations ◽  
Type Iii ◽  
Electron Clouds

Type III solar radio bursts are known to be excited by solar electron clouds travelling outwards through the solar corona and interplanetary medium. According to the “plasma hypothesis”, electron plasma oscillations are created by the passing beam, which are in turn converted into electromagnetic waves.

scholarly journals Lumbar alterations in magnetic resonance: correlation between Modic and Pfirrmann classifications

2014 ◽  
Vol 13 (3) ◽  
pp. 202-205 ◽  
Author(s):  
Luciano Miller Reis Rodrigues ◽  
Caio Vargas Yoshino ◽  
Alexandre Barros Costa
Keyword(s):  
Magnetic Resonance ◽  
Disc Degeneration ◽  
Strong Correlation ◽  
Intervertebral Discs ◽  
Type Iii ◽  
Lumbar Segment ◽  
Relationship Of ◽  
The Relationship

OBJECTIVE: To evaluate the relationship of sex and age with Modic and Pfirrmann classifications and verify the relationship between the two classifications in the group of patients studied. METHODS: 300 magnetic resonance scans (MRI) of the lumbar segment of the patients were evaluated; each lumbar segment (L1-L2, L2-L3, L3-L4, L4-L5 and L5-S1) was assessed according to Modic and Pfirrmann classifications. RESULTS: The type III of Pfirrmann was the most prevalent, whereas Modic was absent on most levels analyzed. The Modic signal was present mainly in the lower levels (L4-L5 and L5-S1) and in females. CONCLUSION: There is a strong correlation between the changes of the endplate and intervertebral discs, evidenced by changes in MRI. The relationship between Pfirrmann and Modic classifications is statistically higher the greater the disc degeneration.

Electron Plasma Oscillations Associated with Type III Radio Bursts

Science ◽  
1976 ◽  
Vol 194 (4270) ◽  
pp. 1159-1162 ◽  
Author(s):  
D. A. GURNETT ◽  
R. R. ANDERSON
Keyword(s):  
Electron Plasma ◽  
Radio Bursts ◽  
Plasma Oscillations ◽  
Type Iii

scholarly journals STUDIES ON IMMUNOLOGICAL RELATIONSHIPS AMONG THE PNEUMOCOCCI

1928 ◽  
Vol 47 (6) ◽  
pp. 917-931 ◽  
Author(s):  
John Y. Sugg ◽  
Emidio L. Gaspari ◽  
William L. Fleming ◽  
James M. Neill
Keyword(s):  
Horse Serum ◽  
Type Ii ◽  
Type Iii ◽  
Theoretical Significance ◽  
Homologous Strain ◽  
Typical Type ◽  
Relationship Of ◽  
The Relationship ◽  
Relative Potencies

The paper reports a study of a virulent, S-producing strain of Pneumococcus which is immunologically related to, but not identical with typical strains of Type III pneumococcus. In a potent anti-Type III serum, the relationship of this strain to typical Type III strains appears to be about the same as the relationship of Avery's Subgroup Type II strains to typical Type II. But a more pronounced distinction is evident in the antiserum produced by immunization with the strain related to Type III. This antiserum contained antobodies specifically reactive with typical Type III bacteria as well as antibodies reactive with the homologous strain, while anti-Subgroup Type II immune sera are devoid of antibodies reactive with typical Type II pneumococci. The result of absorption experiments were the same as those usually obtained with immunologically related, but not identical bacteria. The failure of reciprocal absorption and the marked variations in the relative potencies of the antiserum from different individual animals might be presented as presumptive evidence that two different anti-S antibodies are contained in Type III immune horse serum. The theoretical significance of virulent pneumococci which are related to but not identical with the "fixed" types, is discussed from the standpoint of their importance in the biological classification of the Pneumococcus group.

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