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Date submitted2009-08-08
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Date accepted2009-10-11
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Date published2010-02-01
The ontogenetic analysis of the vein quartz of some deposits of Southern Urals mountains
- Authors:
- E. L. Kotova
Comprehensive studying of vein quartz gives valuable information about quartz and quartz bodies formation conditions, which is very important for a forecast substantiation and exploration of new perspective deposits. For the purpose to receive qualitative and quantitative mineralogy-petrographic characteristics of vein quartz of different technological types (deposits of Southern Urals Mountains) four types of quartz grains are dedicated. For acknowledgement of correctness of the differentiation the full stereometric analysis with the help of Mineralogical Analyzer of structure MIU-5M is carried out. Parameters of a structure of mineral aggregate are received. Basis on these data, genetic and necessary for technologists conclusions are represented.
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Date submitted1950-07-06
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Date accepted1950-09-14
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Date published1951-04-30
About an assessment of the accuracy of altitude determinations in aerial stereo photography
- Authors:
- L. N. Kell
To increase the accuracy of the heights obtained from a stereo pair, it is natural, first of all, to strive to ensure that one meter of height corresponds to the largest possible increment of the longitudinal parallax at a given scale of the photograph. Or, in other words, one should strive to increase the ratio of the increment (Ap) \ longitudinal parallax by 1 m to the segment (m)i, in the photograph corresponding to 1 m of horizontal extension on the ground. Let us designate this ratio as m. Thus, the value of the indicated ratio acquires a significant role in characterizing the accuracy of height determinations.