All articles - Geology

The aim of the research work was definitions of possibility of creation of a ferromagnetic condition in a highly compensated monocrystallinc silicon doping by method ion implantations and complex investigation of formation nanocluster structures, and also to research of clcctrophysical, magnetic properties.
Scientific novelty of the research work:
for the first time, is shown, possibility of obtaining by ion implantation method monocrystallinc highly compensated semiconductor, containing high spin nanoclusters with ferromagnetic properties;
for the first time, it is revealed formations high spin magnetic nanoclusters manganese at ion implantation and under certain conditions annealing of samples;
it was found ferromagnetism of samples Si <B, Mn> at a room temperature;
for the first time, it is revealed positive magnetoresistance and a kinetics and hysteresis of magnetoresistance connected with magnetic nanoclusters of manganese in an ion implanted samples Si <B, Mn>;
it is revealed the mechanism of magnetization and existence of the ferromagnetic condition, influencing transport properties of samples;
existence of a ferromagnetic condition it is explained by existence of exchange interaction between electrons of ions of impurity in a clusters and interaction between clusters;
it was found out that interaction between clusters and exchange interaction in clusters is not entered within the limits of one theory.

The aim of the research work is justification of the design characteristics of the embankments of the roadbed from natural and stabilized saline soils.
Scientific novelty of research work consists in the following: improved existing design solutions for determining the estimated road surface performance of saline soils located throughout the territory of Uzbekistan; functional dependence of the road surface layer on saline soils on the number and type of salts contained in it was revealed; method of determining the saline soil moisture level in the road surface layer has been improved; method for improving structural relationships and properties of saline soils with surface-active treatment.

The aim of the research work is to reveal the configuration and content of the scientific picture of petroleum products contamination of groundwater in the natural conditions of Uzbekistan
Scientific novelty of the research:
the first time the scientific picture of petroleum product pollution in the structural tier of the modem water exchange of a large basin (the highest in terms of the organization of the hydrogeological system) is characterized, which reflects the essence of this phenomenon, the cause-effect connections with the environment, such as:
new version of the computational model of migration and transformation of petroleum products, in the format of a flow model with variable mass is developed, which components arc estimated (measured) by mass consumption and products mass.
map (scheme) of underground aquifer systems of the structural tier of the large Ferghana basin modem water exchange was developed by new mapping method in the scale of 1:200 000, which reflects the contamination sources locations and affected by them parts of water bodies.
the levels of petroleum products contamination of underground aquifers, open water currents and reservoirs (in interrelation) have been revealed.
the significance of the removal of petroleum products from the Fergana region to the Middle Syrdarya River in the moderate concentrations for the fishery limiting harmfulness was estimated; Syrdarya River, being in the region the basis of modern water runoff in aggregate, drains and also remove petroleum products contaminated water.
the recommendations on sanitation of petroleum-contaminated groundwater aquifers, water bodies and lands were developed in a modified format.