Untersuchungen �ber die Hemmung der Ureaseaktivit�t durch sulfonierte Polygalacturons�uren

Kaiser, Ernst; Herbst, Leandra

doi:10.1007/bf01075429

Cited by 6 publications

(7 citation statements)

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“…That this distribution is largely independent of the source distribution over the celestial sphere is shown by the absence of a marked diurnal variation (Weiss 1957) and the identical distribution found for March 1953. This distribution may be compared with the prediction (Kaiser 1954b) for a uniform distribution of radiants on the geocentric celestial sphere. The number of echoes observed per unit zenith angle interval is…”

Section: Zenith Angles Of Reflection Points (A) Sporadic Meteorsmentioning

confidence: 99%

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Elevation, Height, and Electron Density of Echoing Points of Meteor Trails

Weiß¹

1959

Aust. J. Phys.

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8urwmaryContinuous and systematic operation of a C.W. equipment which measures simultaneously several characteristics of meteor echoes, including the location in space of the reflection point, provides the basic material for an examination of the geometry of detection of meteor trails by radio equipments and of the processes underlying selection of echoes for measurements of different kinds.At least 60 per cent. of all echoes are distorted in some degree, presumably by atmospheric turbulence or by non-specular reflection. This and selection in height due to diffusion of the trail are the two most important selection processes.The distribution of the echoing points of sporadic meteors, in zenith angle and in height, is compared with theoretical expectation. Height distributions found for Arietid and r;-Perseid meteors agree with other measurements. The height distribution for the Geminid shower is unexpectedly narrow, a fact for which no satisfactory explanation can be advanced. Distributions of electron line densities at reflection points agree qualitatively with known mass distributions and trail shapes.

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Section: Zenith Angles Of Reflection Points (A) Sporadic Meteorsmentioning

confidence: 99%

“…Its volume is 1·2 x 10 6 km 3 • The full line AA in Figure 6 is the mean height of the smoothed distribution. From the theory of the sporadic meteor height distribution (Kaiser 1954b), it may be deduced that for constant meteor velocity the relation between the mean height and the zenith angle of detection is…”

Section: The Sporadic Meteor Height Distributionmentioning

confidence: 99%

Elevation, Height, and Electron Density of Echoing Points of Meteor Trails

Weiß¹

1959

Aust. J. Phys.

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“…Proper weighting would be difficult for the Adelaide equipment, whose echo rate is determined by the line-of-sight velocity of drift of the meteor trails as well as by the aerial polar diagram. By selecting a narrow elevation interval over which the equipment sensitivity may be regarded as substantially constant, the final integration is eliminated (Kaiser 1954b) and Figure 4 may be taken as a sufficient approximation to the parameters of the complete sporadic meteor height distribution for a homogeneous velocity group. What constitutes a sufficiently narrow elevation interval can best be ascertained by a preliminary analysis of the records.…”

Section: The Complete Height Distributionmentioning

confidence: 99%

“…For an assumed uniform geocentric distribution of radiants, and with 8=2 '0, the mean X and the r.m.s. deviation ~X of the cp-distribution are (Kaiser 1954b) : (19) in which ~ is defined by cos X=cos cp cos~. It is assumed that the equipment sensitivity is such that the minimum detectable line density is much less than 10 12 electrons/em over most of the aerial aperture.…”

Section: The Complete Height Distributionmentioning

confidence: 99%

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Theory of the Radio?Echo Meteor Height Distribution in a Non-isothermal Atmosphere

Weiß¹

1959

Aust. J. Phys.

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SummaryThe theory of the distribution in height of the echoing points of shower meteors and of sporadic meteors belonging to a homogeneous velocity group, is extended to the case of a model atmosphere in which the scale height is a linear function of height. The mean and the r.m.s. deviation from the mean of the height distribution in this atmosphere are obtained in terms of tabulated functions, and the dependence of these parameters upon the scale height gradient is evaluated. Neither parameter varies strongly with the scale height gradient unless the incident meteors include a large proportion of massive particles. Experimental cut-off and the approximations made in the formulation of the theory limit the accuracy with which atmospheric scale height and density can be determined from observed heights of sporadic meteors.

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Pectic Substances and Pectic Enzymes

Deuel¹,

Stutz²

1959

Advances in Enzymology - And Related Areas of Molecular Biology

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Untersuchungen �ber die Hemmung der Ureaseaktivit�t durch sulfonierte Polygalacturons�uren

Cited by 6 publications

References 0 publications

Elevation, Height, and Electron Density of Echoing Points of Meteor Trails

Elevation, Height, and Electron Density of Echoing Points of Meteor Trails

Theory of the Radio?Echo Meteor Height Distribution in a Non-isothermal Atmosphere

Pectic Substances and Pectic Enzymes

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