Reproduction, Production and the Earth: The Place of Sex in Kielmeyer’s ‘Economy of the Organic World’

2021 ◽  
Author(s):  
Susanne Lettow
Keyword(s):  
The Earth ◽  
Organic World

scholarly journals GEORGES CUVIER — AN OUTSTANDING SCIENTIST-NATURALIST (TO THE 250TH ANNIVERSARY OF BIRTHDAY)

2018 ◽  
pp. 77-82
Author(s):  
I. A. SHCHEGLOV ◽  
F. F. AKHUNOV ◽  
R. U. YEREMENKO ◽  
V. N. KOMAROV
Keyword(s):  
19Th Century ◽  
Scientific Method ◽  
Western Europe ◽  
Paris Basin ◽  
250Th Anniversary ◽  
The Earth ◽  
Organic World ◽  
Georges Cuvier ◽  
First Time ◽  
Further Development

Georges Cuvier belongs to the most largest naturalists of the end of 18th – the first half of 19th century. He published more than 300   scientific works, which considered different problems — from the  design of comparative-anatomical fundament for the development of  the creatures system, to the questions of natural science. Cuvier  suggested his own sight of the progress in organic world, which gave to the geologists the scientific method on geochronology. His theory  of catastrophes, which provided the change of the subsequent  systems of flora and fauna on the Earth, had a huge influence on the further development of science. The result of its use was the  appearance of the stratigraphic scale in the first half of 19th century. The most important reform of the zoological systematics is  connected with the Kuvier’s works. On the base of comparative- anatomical method, he justified for the first time the study ot the  four main forms of the organization of the creatures, or the plans of  the animal kingdom’s structure. The stratigraphic scheme of Paris basin, suggested by Kuvier, became the example pattern for  the differentiation of the similar deposits in other regions of Western Europe. A brief biographic data has been provided.

scholarly journals About the book “History of the Earth. From Stardust to Stardust”

2020 ◽  
Vol 63 (2) ◽  
pp. 97-100
Author(s):  
V. N. Komarov
Keyword(s):  
Large Scale ◽  
Final Section ◽  
Book History ◽  
Evolutionary Development ◽  
The Earth ◽  
Organic World ◽  
History Of ◽  
Nutritional Strategies ◽  
Opening Up ◽  
Detailed Picture

The book gives a detailed picture of the Earth’s history. The authors describe successive changes in paleogeographic settings and their underlying reasons, changes in ocean levels and continent outlines, the processes of volcanism and basic laws of mineral formation. Particular attention is paid to the most important arogeneses of evolutionary development, which created conditions for organisms to leave their habitual environment, thus opening up new prospects for a wide ecological expansion. As nodal points in the evolution of individual groups of the organic world and landscape changes, the authors acquaint readers with the skeletal revolution, the emergence of organs of vision, the appearance of roots in plants, the formation of first soils, the emergence of vertebrates on land, the flourishing of insects, the appearance of mammals and flowering plants. Detailed information on the most interesting extinct organisms of certain periods of the Earth’s geological history is given. Their morphology, size, lifestyle, nutritional strategies and causes of extinction are considered. Of particular interest is the part devoted to the appearance and development of mankind, as well as its large-scale comprehensive impact on nature. In the final section of the book, the authors reflect on the future of our planet.

The motion of a lunar orbiter

1966 ◽  
Vol 25 ◽  
pp. 373
Author(s):  
Y. Kozai
Keyword(s):  
Degrees Of Freedom ◽  
Dimensional Space ◽  
Artificial Satellite ◽  
Equations Of Motion ◽  
Triaxial Ellipsoid ◽  
The Moon ◽  
Secular Motion ◽  
The Earth ◽  
Close Satellite ◽  
The Mean

The motion of an artificial satellite around the Moon is much more complicated than that around the Earth, since the shape of the Moon is a triaxial ellipsoid and the effect of the Earth on the motion is very important even for a very close satellite.The differential equations of motion of the satellite are written in canonical form of three degrees of freedom with time depending Hamiltonian. By eliminating short-periodic terms depending on the mean longitude of the satellite and by assuming that the Earth is moving on the lunar equator, however, the equations are reduced to those of two degrees of freedom with an energy integral.Since the mean motion of the Earth around the Moon is more rapid than the secular motion of the argument of pericentre of the satellite by a factor of one order, the terms depending on the longitude of the Earth can be eliminated, and the degree of freedom is reduced to one.Then the motion can be discussed by drawing equi-energy curves in two-dimensional space. According to these figures satellites with high inclination have large possibilities of falling down to the lunar surface even if the initial eccentricities are very small.The principal properties of the motion are not changed even if plausible values ofJ3andJ4of the Moon are included.This paper has been published in Publ. astr. Soc.Japan15, 301, 1963.

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

The Origin of the Moon

1962 ◽  
Vol 14 ◽  
pp. 149-155 ◽  
Author(s):  
E. L. Ruskol
Keyword(s):  
Chemical Composition ◽  
Solar System ◽  
The Moon ◽  
The Earth ◽  
The Difference ◽  
Origin Of The Moon

The difference between average densities of the Moon and Earth was interpreted in the preceding report by Professor H. Urey as indicating a difference in their chemical composition. Therefore, Urey assumes the Moon's formation to have taken place far away from the Earth, under conditions differing substantially from the conditions of Earth's formation. In such a case, the Earth should have captured the Moon. As is admitted by Professor Urey himself, such a capture is a very improbable event. In addition, an assumption that the “lunar” dimensions were representative of protoplanetary bodies in the entire solar system encounters great difficulties.

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