scholarly journals The Diurnal Variation in the Mass Distribution of Sporadic Meteors

1972 ◽  
Vol 155 (4) ◽  
pp. 403-413 ◽  
Author(s):  
D. W. Hughes ◽  
D. G. Stephenson
Keyword(s):  
Diurnal Variation ◽  
Mass Distribution ◽  
Sporadic Meteors

scholarly journals The Characteristics of Persistent Sporadic Meteor Echoes

1961 ◽  
Vol 14 (1) ◽  
pp. 89 ◽  
Author(s):  
JW Smith
Keyword(s):  
Diurnal Variation ◽  
Frequency Distribution ◽  
Mass Distribution ◽  
Power Law ◽  
Power Law Distribution ◽  
Sporadic Meteors

This paper examines the frequency distribution of the durations of nearly 8000 persistent radio echoes from sporadic meteors recorded at Adelaide during 1957. The maximum line densities in the trails formed by these meteors exceed 1013 electrons/em, corresponding to visual magnitudes < +3. As the echo duration increases, the numbers of echoes are found to fall progressively further below the numbers expected from a power-law distribution. No significant seasonal or diurnal variation in the mass distribution of the meteors examined is apparent.

scholarly journals Mass distribution indices of sporadic meteors using radar data

2011 ◽  
Vol 412 (3) ◽  
pp. 2033-2039 ◽  
Author(s):  
R. C. Blaauw ◽  
M. D. Campbell-Brown ◽  
R. J. Weryk
Keyword(s):  
Mass Distribution ◽  
Radar Data ◽  
Sporadic Meteors

On the mass distribution of faint sporadic meteors

1970 ◽  
Vol 48 (21) ◽  
pp. 2584-2591 ◽  
Author(s):  
J. Jones ◽  
J. G. Collins
Keyword(s):  
Mass Distribution ◽  
Small Mass ◽  
Experimental Results ◽  
Mass Dependence ◽  
Forward Scatter ◽  
Distribution Index ◽  
Sporadic Meteors

Forward scatter and backscatter determinations of the amplitude distributions of underdense sporadic radio meteor echoes are described. The experimental results lead to an ionization distribution index of 3.13 and are shown to be consistent with an initial train radius of about 80 cm at a height of 100 km. Comparison of the ionization and luminosity distributions of meteor trains indicates a small mass dependence of the geocentric meteor velocity, which we suggest is due to the mass distribution index of meteoroids in retrograde orbits being higher than that of the meteoroid population as a whole.

Analysis of STEM micrographs of thick objects

1978 ◽  
Vol 36 (2) ◽  
pp. 106-107
Author(s):  
S. Golladay
Keyword(s):  
Inelastic Scattering ◽  
Multiple Scattering ◽  
Mass Distribution ◽  
Cross Sections ◽  
Phase Contrast ◽  
Image Point ◽  
Contrast Effects ◽  
Total Cross Sections ◽  
Elastic And Inelastic Scattering

The theory of multiple scattering has been worked out by Groves and comparisons have been made between predicted and observed signals for thick specimens observed in a STEM under conditions where phase contrast effects are unimportant. Independent measurements of the collection efficiencies of the two STEM detectors, calculations of the ratio σe/σi = R, where σe, σi are the total cross sections for elastic and inelastic scattering respectively, and a model of the unknown mass distribution are needed for these comparisons. In this paper an extension of this work will be described which allows the determination of the required efficiencies, R, and the unknown mass distribution from the data without additional measurements or models. Essential to the analysis is the fact that in a STEM two or more signal measurements can be made simultaneously at each image point.

Mass distribution and Dynamical State of Galaxy Clusters in the LZLS Sample

2006 ◽  
Vol 20 ◽  
pp. 269-270 ◽  
Author(s):  
L.E. Campusano ◽  
E.S. Cypriano ◽  
L. Jr. Sodré ◽  
J.-P. Kneib
Keyword(s):  
Galaxy Clusters ◽  
Mass Distribution ◽  
Dynamical State

Mass distribution of hydrodynamic jets produced on the national ignition facility

2006 ◽  
Vol 133 ◽  
pp. 107-110 ◽  
Author(s):  
B. E. Blue ◽  
S. V. Weber ◽  
D. T. Woods ◽  
M. J. Bono ◽  
S. N. Dixit ◽  
...  
Keyword(s):  
Mass Distribution ◽  
National Ignition Facility

Fibrinolysis and Alimentary Lipaemia in Whites and Bantus; Their Relationship and Response to Intravenous Heparin

1964 ◽  
Vol 11 (01) ◽  
pp. 108-118 ◽  
Author(s):  
H Lackner ◽  
R Sougin-Mibashan
Keyword(s):  
Diurnal Variation ◽  
Fibrinolytic Activity ◽  
Butter Fat ◽  
Intravenous Heparin ◽  
The Difference

Summary and Conclusion1. Diurnal variation in fibrinolysis is marked in the Whites and almost absent in the Bantu. >2. The difference in fibrinolytic activity beween White and Bantu has been confirmed, but was found to decrease over the course of the morning due to diurnal variation in the White subjects.3. The ingestion of butter fat does not inhibit fibrinolysis to any appreciable extent in either White or Bantu.4. The accelerating effect of heparin on fibrinolysis was found to be present in lipaemic plasma, but appears to be distinct from the fat-clearing effect.

Empirical analysis of market boundaries in telecommunications

2019 ◽  
pp. 90-111 ◽  
Author(s):  
Natalia S. Pavlova ◽  
Andrey Е. Shastitko
Keyword(s):  
Law Enforcement ◽  
Empirical Analysis ◽  
Mass Distribution ◽  
End Users ◽  
Economic Modeling ◽  
Empirical Approach ◽  
Antitrust Law ◽  
Technological Changes ◽  
Loss Analysis ◽  
E Mail

The article deals with the problem of determining market boundaries for antitrust law enforcement in the field of telecommunications. An empirical approach has been proposed for determining the product boundaries of the market in the area of mass distribution of messages, taking into account the comparative characteristics of the types and methods of notification (informing) of end users; the possibilities of switching from one way of informing to another, including the evolution of such opportunities under the influence of technological changes; switching between different notification methods. Based on the use of surveys of customers of sending SMS messages, it is shown that the product boundaries should include not only sending messages via SMS, but also e-mail, instant messengers, Push notifications and voice information. The paper illustrates the possibilities of applying the method of critical loss analysis to determining the boundaries of markets based on a mixture of surveys and economic modeling.

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