Taking the surveyed of optical quasars in two celestial areas (5°×5°) made by Savage-Bolton as samples, the author analyses systematically the number of quasars in alignment, and compares the result with the random distributed sample generated by Monte Carlo method.
The first part includes instrumentations and observational methods, sample selecting and data analysis, properties of radio spectrum and variabilities of radio sources, etc.
This paper we analyze the clustering properties of LBQS Quasar Sample with the method of three dimensional spheroidal Power Spectrum Analysis (PSA) in SPhere,discuss the influence of q0,boundary,error of redshifts,and compare the results with the results of Correlation Function. It is found that quasars of this sample couldn't cluster or cluster very weakly.
We use a complete sample of about 140,000 galaxies from the Sloan Digital Sky Survey (SDSS) to study the size distribution of galaxies and its dependence on their luminosity, stellar mass, and morphological type.
(2) According to the metallicity and basic characters, the sample clusters are separated into HB subgroup and MP subgroup. The number of samples are changed with metallicity [Fe/H], and there is a peak at [Fe/H] = - 1.6;
This paper we analyze the clustering properties of LBQS Quasar Sample with the method of three dimensional spheroidal Power Spectrum Analysis (PSA) in SPhere,discuss the influence of q0,boundary,error of redshifts,and compare the results with the results of Correlation Function. It is found that quasars of this sample couldn't cluster or cluster very weakly.
Five lunar soil simulants,JSC-1,MLS-1,MLS-2,MKS-1,FJS-1 are reviewed in the paper. Theirstarting materials,preparation,and characterization(chemical composition,mineralogy,particle sizedistribution,specific gravity,angle of internal friction,and cohesion)are also listed. China will realize the first lunar exploration before 2007.So it is an essential and pressing taskto develop lunar soil simulants series corresponding to average chemical and mineral composition oflunar sample at Apollo and Luna landing sites.
The theorem is then used to characterize a class of entire functions that can be reconstructed from their sample values at the points tn = an + b if n = 0, 1, 2, ...
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In the continuous sample path case precise error bounds are derived.
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This approximation method is used to develop a simulation method of the sample path of linear fractional stable motions.
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This compares very favorably with the direct O(B6) algorithm derived from a basic quadrature rule on O(B3) sample points.
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An antibiotic producing strain Streptomyces violaceusniger was isolated from soil sample, characterized and studied for antibacterial and antifungal activity profile.