The effect of water abundance in a territory on the population health     

L. I. Elpiner  S. A. Bear  I. S. Zektser  R. K. Klige  A. E. Shapovalov 《Water Resources》2007,34(3):340-349

The paper presents the results of analysis of present-day scientific data on the dynamics of global hydroclimatic processes (with the establishment of long-term variations in the global water exchange processes) and the features of water abundance in territories under the effect of various natural and anthropogenic factors. Possible transformations of the hydrogeological situation under global climate changes are considered. The basic principles of the concept regarding the assessment of the effect of global hydroclimatic changes on the population health are presented. Medical-environmental data on the consequences of water-triggered environmental crises, taken as analogous natural models, are analyzed. The processes and regularities in the development of human pathology under the conditions of higher and lower water abundance in a territory are identified. The succession, time stages, and phases of the development of infection, parasitic, noninfectious pathologies are determined. Cause-and-effect relationships were established between the observed pathology and the effect of a complex of changing natural, anthropogenic, and social-environmental factors. Methodological approaches to the assessment of medical-environmental consequences of distinct changes in the water abundance in the territories are described. The possible use of subsurface water sources as a reserve of domestic water supply under emergencies are considered.  相似文献   

The Influence of Sodium and Potassium Chlorides on Phase Ratios in the Eclogite–CaCO3–H2O + CO2 System at 4 GPa and 1200–1300°C     

Gorbachev  N. S.  Shapovalov  Yu. B.  Kostyuk  A. V. 《Doklady Earth Sciences》2018,479(2):524-528

To characterize the influence of alkaline metal chlorides on the phase ratios under melting of upper mantle eclogites, the eclogite–CaCO₃–NaCl–KCl system with Н₂О + СО₂-fluid was studied in the experiments under 4 GPa and 1200–1300°C. A low difference in temperatures (<100°C) was registered between the eclogite solidus and liquidus (>1200 and <1300°C, respectively), which is characteristic for the near-eutectic compositions. The phase proportions were peculiar for the absence of any silicate melt over the entire temperature range considered. The carbonate melt coexisted with clinopyroxene and garnet within 1200–1250°C, whereas a carbonate melt exclusively occurred under above-liquidus conditions at 1300°C. The melt quenching resulted in the formation of a multiphase fine-grained mixture of Ca, Na, and K carbonates and chlorides containing microinclusions of clinopyroxene and garnet. The occurrence of a high-calcium carbonate melt in Cl-containing eclogite systems might play a significant role in the mantle metasomatism of subduction zones characterized by the water–alkaline–chloride type of fluids.

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Experimental study of stability and crystallization peculiarities of tourmaline in hydrothermal conditions     

Setkova  T. V.  Shapovalov  Yu. B.  Marakushev  A. A.  Balitskii  V. S. 《Doklady Earth Sciences》2009,425(2):490-493

Doklady Earth Sciences -  相似文献   

Dikes of Quartz Porphyry and Their Role in the Formation of the Salmi Batholith (South Karelia)     

Konyshev  A. A.  Anosova  M. O.  Rusak  A. A.  Alekseev  I. A.  Yakushev  A. I.  Shapovalov  Y. B. 《Doklady Earth Sciences》2020,491(1):127-130

Doklady Earth Sciences - New data are presented on the quartz porphyry dikes of the Salmi batholith belonging to anorthosite–rapakivi granite rock complexes. The relationships of various...  相似文献   

Return of Russian Oceanographers to the Indian Ocean: Multidisciplinary Study during the 42nd Cruise of the Research Vessel Akademik Boris Petrov     

Levchenko  O. V.  Shapovalov  S. M. 《Oceanology》2019,59(1):164-166

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XVI Russian Symposium on Experimental Mineralogy     

Yu. B. Shapovalov  T. N. Koval’skaya 《Geochemistry International》2011,49(10):1051-1056

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First Russian conference on the International Geotracers Program     

L. L. Demina  S. M. Shapovalov 《Oceanology》2014,54(1):113-115

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Experimental study of natural pyrochlore and niobium oxide solubility in Alkaline hydrothermal solutions     

V. S. Korzhinskaya  N. P. Kotova  Yu. B. Shapovalov 《Doklady Earth Sciences》2017,475(1):793-796

The concentration and temperature dependences of pyrochlore and Nb oxide solubility in Na₂CO₃ and Na₂СO₃ + NaF aqueous solutions with concentrations from 0.01 to 2.0 m at 300–550°C and 50 and 100 MPa (the Co–CoO buffer) are studied. It is established that the Nb equilibrium content in the solution increases at 550°C and 100 MPa with an increase in mNa₂CO₃ and reaches the value of 10^–4 m. The Nb₂O₅ solubility almost does not change as the concentration of Na₂CO₃ increases and is found within 10^–6 to 10^–5.5 m.  相似文献   

Effect of Silicate Matter on Pyrochlore Solubility in Fluoride Solutions at <Emphasis Type="Italic">Т</Emphasis> = 550–850°C, <Emphasis Type="Italic">Р</Emphasis> = 50–100 MPa (Experimental Studies)     

A. R. Kotelnikov  V. S. Korzhinskaya  Z. A. Kotelnikova  N. I. Suk  Yu. B. Shapovalov 《Doklady Earth Sciences》2018,482(1):1199-1202

The experimental results of natural pyrochlore behavior in KF solutions in the presence of quartz at 550–850°C and 50–100 MPa are presented. It is shown that silicate matter (quartz) exerts a significant effect on pyrochlore solubility in aqueous solutions of fluorides of alkaline metals under hydrothermal conditions. This study of the fluid inclusions has revealed the occurrence of reactions of high-temperature hydrolysis of KF under the experimental conditions: KF + H₂O = KOH + HF; in which case, the interaction with quartz SiO₂ + 2KOH = K₂SiO₃ + H₂O is followed by the formation of a silicate glass phase (an aqueous solution–melt). This phase of alkaline glass is a Nb concentrator (Nb₂O₅ up to 16 wt %). The coefficient of Nb distribution between the glass and the fluid is ≈500 (in favor of the glass). It is determined that the phase of the silicate solution–melt can serve as an effective concentrator of the ore component (Nb) at the last lowtemperature stages of crystallization of rare-metal granites.  相似文献   

Erratum to: Experimental Study of the Solubility of Natural Tantalite and Pyrochlore and Tantalum and Niobium Oxides in Hydrothermal Fluoride–Chloride Solutions     

Kotova  N. P.  Korzhinskaya  V. S.  Shapovalov  Yu. B. 《Doklady Earth Sciences》2022,505(2):599-599

Doklady Earth Sciences - An Erratum to this paper has been published: https://doi.org/10.1134/S1028334X22340025  相似文献