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Convenient structure adjustment and thereby the achievement of suitable material and technological properties is one of the very important areas of technological as well as material research. In general, this issue includes a great number of parameters and variables. To find suitable technological conditions, it is possible to use various kinds of modeling processes. One of them is the utilization of thermomechanical simulators, which allow simulating the conditions of the real processes to be simulated with sufficient accuracy. It is then possible to perform the optimization on smaller specimens, while monitoring the real conditions with higher accuracy. This method was used for the optimization of unconventional technological processes for selected alloying strategies of low-alloyed multiphase steels. These strategies are designed to be applied to technologies, which combine anisothermal forming and thermomechanical treatment of quasimassive components using intensive plastic deformation. Incremental deformations allow a high amount of deformation to be reached. It is also possible to obtain very fine grained structures by a suitable choice of temperature. By a suitable choice of temperature it is also possible to obtain structures with very fine grain. At the same time, the morphology of the structure and thus also its final mechanical properties can be significantly influenced this way.

The development of satellite geodesy and creation of geocentric and geodetic bases have become an impulse for the integration and modernization of national geodesic bases into the global continental frame. In the area of cadastral practice classic planar coordinate systems and established figures have been used for a long time. Nowadays, searching for the relationship between standard (classic) geodetic systems and the newly existing geocentric system is still the current issue of geodetic practice.

We provide arguments in favour of impact origin of a 200 km suspected impact crater Kotuykanskaya near Popigai, Siberia, Russia. We use the gravity aspects (gravity disturbances, the Marussi tensor of the second derivatives of the disturbing geopotential, the gravity invariants and their specific ratio, the strike angles and the virtual deformations), all derived from the combined static gravity field model EIGEN 6C4, with the ground resolution of about 10 km and a precision of about 10 milliGals. We also use the magnetic anomalies from the model EMAG2 and emphasize the evidence of much deeper sources in the suspected area, constraining the impact origin of this structure. Motivation, method, theory, and data. Motivation. The objective of this study is to use recently available high-resolution gravity aspects (descriptors) derived from the global Earth's gravity field model EIGEN 6C4 1 with the ground resolution of about 9 km, to provide an independent assessment of the existence of a suspected Kotuykanskaya impact crater(s) near the proven impact crater Popigai in Siberia, Russia.It would be one of the largest impact craters on the Earth -with a diameter of ~200 km, about twice as large as Popigai, comparable to Chicxulub, so it is worthy to study it when we have available new gravity data and a new methodology (see comments below). Nevertheless, we have no detailed geological data available, so we cannot provide any final decision.For the given locality our aim is to apply the new available gravity aspects (derived from EIGEN 6C4), magnetic anomalies (EMAG v. 2) and surface topography (ETOPO 1).Methodology. Classical gravity anomalies (or disturbances Δg) provide only limited information about the stress state of the rocks causing them. In order to broaden the potential information about the state of rocks we compute various gravity functions (the gravity aspects) of the disturbing gravitational potential expressed in the spherical harmonic expansion to a high degree and order (known as the geopotential coefficients or the Stokes parameters) in addition to the gravity anomalies Δg. The core of our method is in the use of various gravitational aspects, namely the components of the Marussi tensor Γ of the second derivatives T ij of the disturbing potential, the gravity invariants I 1 and I 2 , their specific ratio I, the strike angles θ and the virtual deformations vd. Each of these gravity aspect tells its own "story" about the density due to the causative body and in turn about the gravity signal generated.Comments to theory.

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