Long-Term Dynamics of Nitrogen and Phosphorus Concentrations in Subsoil Water in Ivankovo Reservoir Drainage Basin     

Kirpichnikova  N. V.  Lapina  E. E.  Kudryashova  V. V. 《Water Resources》2020,47(5):721-730

Water Resources - The article presents the results of summer dry-season areal surveys of subsoil water chemistry in the drainage basin of the Ivankovo Reservoir in the Volga segment from Tver City...  相似文献   

Development of a Prototype of an Expert System for Decision Making Support in Optimizing Measures Aimed to Protect Water Objects from Diffuse Pollution: Case Study of the Volga Basin     

Kozlova  M. A.  Kirpichnikova  N. V.  Faschevskaya  T. B.  Polyanin  V. O.  Borodin  O. O. 《Water Resources》2020,47(5):731-743

Water Resources - A prototype of an expert system for decision-making support in optimizing measures aimed to protect pilot water objects from diffuse pollution in the Volga basin was developed...  相似文献   

The Structure of Flows in the Ivan'kovo Reservoir     

Samolyubov  B. I.  Zyryanov  V. N.  Sluev  M. V.  Kirpichnikova  N. V. 《Water Resources》2000,27(6):604-610

The results of field hydrodynamic studies of the flow structure in the Ivan'kovo reservoir are analyzed. Lateral and vertical heterogeneity was established in the flow velocity, water temperature, and the concentration of suspended matter; and a near-bottom density-controlled current was revealed. The major portion of the suspended matter was shown to be transported by the near-bottom density-controlled current along the Volga navigable channel.  相似文献   

Planar heliocentric roto-translatory motion of a spacecraft with a solar sail of complex shape     

S. N. Kirpichnikov  E. S. Kirpichnikova  E. N. Polyakhova  A. S. Shmyrov 《Celestial Mechanics and Dynamical Astronomy》1995,63(3-4):255-269

A complete treatment of the general motion of rotation and translation of a solar-sail spacecraft is proposed for the non-flat sail of complex shape. The planar heliocentric roto-translatory motion is considered, orbit-rotational coupling in the problem of altitude and orbital sail motion is investigated for the two-folding sail formed by two unequal reflective rectangular plates oriented at a right angle. The problem of orbit-rotational coupling is essentially a planar one: both sail plates are orthogonal to the orbital plane. The possibility of the non-controlled interplanetary transfer with such two-folding sail at its passive radiational orientation is established analytically from point of view of orbit-rotational coupling. Optimal geometric proportions of this sail are found at minimum-time interplanetary transfers.  相似文献   

Peculiarities of Heavy Metals Accumulation in the Bottom Sediments and Higher Aquatic Plants of the Ivan'kovo Reservoir     

Brekhovskikh  V. F.  Volkova  Z. V.  Kirpichnikova  N. V.  Kocharyan  A. G.  Fedorova  L. P. 《Water Resources》2001,28(4):399-406

Concentrations of heavy metals in the bottom sediments of the Ivan'kovo Reservoir bays are analyzed. The role of higher aquatic plants in the processes of heavy metals accumulation and transformation in bottom sediments is studied. Uneven distribution of microelements in the bottom sediments is found to be typical of the bays, which is related to the character of heavy metals input in the bays and to processes occurring inside the bays themselves.  相似文献   

The Problem of Reducing the Diffuse Pollution of Water Bodies and Improving the Efficiency of Water Protection Programs     

Danilov-Danilyan  V. I.  Polyanin  V. O.  Fashchevskaya  T. B.  Kirpichnikova  N. V.  Kozlova  M. A.  Venitsianov  E. V. 《Water Resources》2020,47(5):691-701

Water Resources - Regularities in the formation of diffuse pollution of water bodies are discussed as their understanding is required for the development of an adequate water-protection strategy....  相似文献