167 research outputs found
Trends in development of Russian Far Eastβs fishing industry in context of strategic regional growth
This article is devoted to topical issues of the fishing industry development in the Russian Far East. Far East is the largest and the most abundant with fish resources region of Russia, and also it is the largest territorial administrative unit. The main scientific and practical task the research can help to solve is implementation of strategic prospects and scientific support of the industry development government programs. The aim of the research is to update the trends and identify the main problems of the fishing industry development in the Far East of Russia over the past decade. Methodologically the research is based on the concept of regional economy sustainable development. The article analyzes such indicators of the industry development as: number of enterprises in the industry, number of employees at the industry enterprises, volume of fish products production and processing, level of domestic prices for fish products, fish products consumption volume, fish products export value, volume of investments in fixed assets of industry enterprises. The key trends are identified and the most important problems of the regional fishing industry development are noted. Among such problems: the industryβs dependence on the world market situation, insufficient development of domestic market, excessive growth in prices for fish products in the domestic market, low degree of fish products processing, dependence of fish products export on Asian countriesβ consumers
Near-seismic effects in ULF fields and seismo-acoustic emission: statistics and explanation
International audiencePreseismic intensification of fracturing has been investigated from occurrence analysis of seismo-acoustic pulses (SA foreshocks) and ULF magnetic pulses (ULF foreshocks) observed in Karimshino station in addition to seismic foreshocks. Such analysis is produced for about 40 rather strong and nearby isolated earthquakes during 2 years of recording. It is found that occurrence rate of SA foreshocks increases in the interval (-12, 0 h) before main shock with 3-times exceeding of background level in the interval (-6, -3 h), and occurrence probability of SA foreshocks (pA~75%) is higher than probability of seismic foreshocks (ps~30%) in the same time interval.ULF foreshocks are masked by regular ULF activity at local morning and daytime, nevertheless we have discovered an essential ULF intensity increase in the interval (-3, +1 h) at the frequency range 0.05-0.3 Hz. Estimated occurrence probability of ULF foreshocks is about 40%. After theoretical consideration we conclude: 1) Taking into account the number rate of SA foreshocks, their amplitude and frequency range, they emit due to opening of fractures with size of L=70-200 m (M=1-2); 2) The electro-kinetic effect is the most promising mechanism of ULF foreshocks, but it is efficient only if two special conditions are fulfilled: a) origin of fractures near fluid-saturated places or liquid reservoirs (aquifers); b) appearance of open porosity or initiation of percolation instability; 3) Both SA and ULF magnetic field pulses are related to near-distant fractures (r<20-30 km); 4) Taking into account number rate and activation period of seismic, SA and ULF foreshocks, it is rather probable that opening of fractures and rupture of fluid reservoirs occur in the large preparation area with horizontal size about 100-200km
Methodical Aspects of Development of the Financial Model of Innovation Project in the Segment of Marine Hydrobiological Technologies
The aim of the research is to develop and evaluate the financial model of an innovative investment project based on hydroacoustic technologies to receive funding from the Skolkovo fund and other potential funding institutions for innovative projects. The object of the research is a technological project of a resident of the Skolkovo Foundation - LLC Gidrobionika, based on the research of scientists from the Pacific Branch of the All-Russian Research Institute of Fisheries and Oceanography (TINRO), the Far Eastern State Technical Fisheries University (Dalrybvtuz) and other scientists. The subject of the research is the methodological aspects of assessing the economic efficiency indicators of an innovative project in the segment of hydrobiological technologies. The study used the analysis of factors and risks, cash flow planning, evaluation of criteria NPV, DPI, IRR, PP, ARR, DPP, assessment of the sensitivity of these criteria to various factors based on scenario planning. During the study, a preliminary assessment of the potential market was carried out; segments of industrial fishing and recreational fishing were highlighted; an analysis of environmental factors was carried out; a forecast of production indicators was developed, criteria for the effectiveness of an innovative project were calculated, an analysis of the projectβs sensitivity was made taking into account scenario planning. The scope of the results lies in the subsequent detailed development of the analyzed technological project, the improvement of the design methodology of innovative projects in the field of hydrobiological technologies, the development of sonar technology, and the improvement of the venture financing mechanism. Main conclusions. The innovative project of a pneumoacoustic emitter has some potential for implementation, yet the project is subject to risks. When calculating the financial model for the optimistic scenario, the project demonstrates the positive values of all investment criteria. The calculation of various scenarios for the sensitivity of the financial model of the project showed that the project is subject to minor fluctuations in market conditions, changes in revenue, and an increase in operating costs. There is a number of systemic risks that can potentially have a negative impact on the economic viability of the project. To mitigate the risks, a complex of financial and economic measures is required.Π¦Π΅Π»ΡΡ ΡΠ°Π±ΠΎΡΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΈ ΠΎΡΠ΅Π½ΠΊΠ° ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ°, ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π½Π° Π³ΠΈΠ΄ΡΠΎΠ°ΠΊΡΡΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΡ
Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΡ ΡΠΈΠ½Π°Π½ΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π² ΡΠΎΠ½Π΄Π΅ Β«Π‘ΠΊΠΎΠ»ΠΊΠΎΠ²ΠΎΒ» ΠΈ Π΄ΡΡΠ³ΠΈΡ
ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΠΈΠ½ΡΡΠΈΡΡΡΠ°Ρ
ΡΠΎΠ½Π΄ΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ². ΠΠ±ΡΠ΅ΠΊΡΠΎΠΌ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΠΏΡΠΎΠ΅ΠΊΡ ΡΠ΅Π·ΠΈΠ΄Π΅Π½ΡΠ° ΡΠΎΠ½Π΄Π° Β«Π‘ΠΊΠΎΠ»ΠΊΠΎΠ²ΠΎΒ» β ΠΠΠ Β«ΠΠΈΠ΄ΡΠΎΠ±ΠΈΠΎΠ½ΠΈΠΊΠ°Β», ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΡΠΉ Π½Π° ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΡ
ΡΡΠ΅Π½ΡΡ
Π’ΠΈΡ
ΠΎΠΎΠΊΠ΅Π°Π½ΡΠΊΠΎΠ³ΠΎ ΡΠΈΠ»ΠΈΠ°Π»Π° ΠΡΠ΅ΡΠΎΡΡΠΈΠΉΡΠΊΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎ-ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°ΡΠ΅Π»ΡΡΠΊΠΎΠ³ΠΎ ΠΈΠ½ΡΡΠΈΡΡΡΠ° ΡΡΠ±Π½ΠΎΠ³ΠΎ Ρ
ΠΎΠ·ΡΠΉΡΡΠ²Π° ΠΈ ΠΎΠΊΠ΅Π°Π½ΠΎΠ³ΡΠ°ΡΠΈΠΈ (Π’ΠΠΠ Π), ΠΠ°Π»ΡΠ½Π΅Π²ΠΎΡΡΠΎΡΠ½ΠΎΠ³ΠΎ Π³ΠΎΡΡΠ΄Π°ΡΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΡΠ΅Ρ
Π½ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΠ±ΠΎΡ
ΠΎΠ·ΡΠΉΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΡΠ½ΠΈΠ²Π΅ΡΡΠΈΡΠ΅ΡΠ° (ΠΠ°Π»ΡΡΡΠ±Π²ΡΡΠ·) ΠΈ Π΄ΡΡΠ³ΠΈΡ
ΡΡΠ΅Π½ΡΡ
. ΠΡΠ΅Π΄ΠΌΠ΅Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ β ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΈΠ΅ Π°ΡΠΏΠ΅ΠΊΡΡ ΠΎΡΠ΅Π½ΠΊΠΈ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ ΡΠΊΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎ ΡΡΠΈ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ° Π² ΡΠ΅Π³ΠΌΠ΅Π½ΡΠ΅ Π³ΠΈΠ΄ΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ ΡΠΊΠΈΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ. Π Ρ
ΠΎΠ΄Π΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΡΡ Π°Π½Π°Π»ΠΈΠ· ΡΠ°ΠΊΡΠΎΡΠΎΠ² ΠΈ ΡΠΈΡΠΊΠΎΠ², ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ Π΄Π΅Π½Π΅ΠΆΠ½ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ², ΠΎΡΠ΅Π½ΠΊΠ° ΠΊΡΠΈΡΠ΅ΡΠΈΠ΅Π² NPV, DPI, IRR, PP, ARR, DPP, ΠΎΡΠ΅Π½ΠΊΠ° ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ Π΄Π°Π½Π½ΡΡ
ΠΊΡΠΈΡΠ΅ΡΠΈΠ΅Π² ΠΊ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌ ΡΠ°ΠΊΡΠΎΡΠ°ΠΌ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΡΡΠ΅Π½Π°ΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ. ΠΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π° ΠΏΡΠ΅Π΄Π²Π°ΡΠΈΡΠ΅Π»ΡΠ½Π°Ρ ΠΎΡΠ΅Π½ΠΊΠ° ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ½ΠΊΠ°, Π²ΡΠ΄Π΅Π»Π΅Π½Ρ ΡΠ΅Π³ΠΌΠ΅Π½ΡΡ ΠΏΡΠΎΠΌΡΡΠ»Π΅Π½Π½ΠΎΠ³ΠΎ ΡΡΠ±ΠΎΠ»ΠΎΠ²ΡΡΠ²Π° ΠΈ Π»ΡΠ±ΠΈΡΠ΅Π»ΡΡΠΊΠΎΠ³ΠΎ ΡΡΠ±ΠΎΠ»ΠΎΠ²ΡΡΠ²Π°; ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΡΠ°ΠΊΡΠΎΡΠΎΠ² Π²Π½Π΅ΡΠ½Π΅ΠΉ ΡΡΠ΅Π΄Ρ, ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΏΡΠΎΠ³Π½ΠΎΠ· ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π΅Π½Π½ΡΡ
ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΉ, ΡΠ°ΡΡΡΠΈΡΠ°Π½Ρ ΠΊΡΠΈΡΠ΅ΡΠΈΠΈ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ°, Π²ΡΠΏΠΎΠ»Π½Π΅Π½ Π°Π½Π°Π»ΠΈΠ· ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠ° Ρ ΡΡΠ΅ΡΠΎΠΌ ΡΡΠ΅Π½Π°ΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°Π½ΠΈΡΠΎΠ²Π°Π½ΠΈΡ. ΠΠ±Π»Π°ΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² Π·Π°ΠΊΠ»ΡΡΠ°Π΅ΡΡΡ Π² ΠΏΠΎΡΠ»Π΅Π΄ΡΡΡΠ΅ΠΉ Π΄Π΅ΡΠ°Π»ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ΅ Π°Π½Π°Π»ΠΈΠ·ΠΈΡΡΠ΅ΠΌΠΎΠ³ΠΎ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠ°, ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΡΠΎΠ΅ΠΊΡΠΎΠ² Π² ΡΡΠ΅ΡΠ΅ Π³ΠΈΠ΄ΡΠΎΠ±ΠΈΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ, ΡΠ°Π·Π²ΠΈΡΠΈΠΈ Π³ΠΈΠ΄ΡΠΎΠ°ΠΊΡΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠ΅Ρ
Π½ΠΈΠΊΠΈ, ΡΠΎΠ²Π΅ΡΡΠ΅Π½ΡΡΠ²ΠΎΠ²Π°Π½ΠΈΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΌΠ° Π²Π΅Π½ΡΡΡΠ½ΠΎΠ³ΠΎ ΡΠΈΠ½Π°Π½ΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΠΉ Π°Π½Π°Π»ΠΈΠ· ΠΏΠΎΠΊΠ°Π·Π°Π», ΡΡΠΎ ΠΈΠ½Π½ΠΎΠ²Π°ΡΠΈΠΎΠ½Π½ΡΠΉ ΠΏΡΠΎΠ΅ΠΊΡ ΠΏΠ½Π΅Π²ΠΌΠΎΠ°ΠΊΡΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΈΠ·Π»ΡΡΠ°ΡΠ΅Π»Ρ ΠΈΠΌΠ΅Π΅Ρ ΠΊΠ°ΠΊ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π» ΠΊ ΡΠ΅Π°Π»ΠΈΠ·Π°ΡΠΈΠΈ, ΡΠ°ΠΊ ΠΈ Π΄ΠΎΡΡΠ°ΡΠΎΡΠ½ΠΎ ΠΏΠΎΠ΄Π²Π΅ΡΠΆΠ΅Π½ ΡΠΈΡΠΊΠ°ΠΌ. ΠΡΠΈ ΡΠ°ΡΡΠ΅ΡΠ΅ ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ Π΄Π»Ρ ΠΎΠΏΡΠΈΠΌΠΈΡΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΠ΅Π½Π°ΡΠΈΡ ΠΏΡΠΎΠ΅ΠΊΡ Π΄Π΅ΠΌΠΎΠ½ΡΡΡΠΈΡΡΠ΅Ρ ΠΏΠΎΠ»ΠΎΠΆΠΈΡΠ΅Π»ΡΠ½ΡΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΡ ΠΈΠ½Π²Π΅ΡΡΠΈΡΠΈΠΎΠ½Π½ΡΡ
ΠΊΡΠΈΡΠ΅ΡΠΈΠ΅Π². Π Π°ΡΡΠ΅Ρ ΡΡΠ΅Π½Π°ΡΠΈΠ΅Π² ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»ΡΠ½ΠΎΡΡΠΈ ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠ° ΠΏΠΎΠΊΠ°Π·Π°Π», ΡΡΠΎ ΠΎΠ½ ΡΡΠ²ΡΡΠ²ΠΈΡΠ΅Π»Π΅Π½ ΠΊ Π½Π΅Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΡΠΌ ΠΊΠΎΠ»Π΅Π±Π°Π½ΠΈΡΠΌ ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ Π²ΡΡΡΡΠΊΠΈ, ΡΠΎΡΡΡ ΠΎΠΏΠ΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΈΠ·Π΄Π΅ΡΠΆΠ΅ΠΊ, ΠΈΠ·ΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΊΠΎΠ½ΡΡΠ½ΠΊΡΡΡΡ. Π‘ΡΡΠ΅ΡΡΠ²ΡΠ΅Ρ ΡΡΠ΄ ΡΠΈΡΡΠ΅ΠΌΠ½ΡΡ
ΡΠΈΡΠΊΠΎΠ², ΠΊΠΎΡΠΎΡΡΠ΅ ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎ ΠΌΠΎΠ³ΡΡ ΠΎΠΊΠ°Π·Π°ΡΡ Π½Π΅Π³Π°ΡΠΈΠ²Π½ΠΎΠ΅ Π²Π»ΠΈΡΠ½ΠΈΠ΅ Π½Π° ΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΡΠΎΠ΅ΠΊΡΠ°. ΠΠ»Ρ Π½Π΅ΠΉΡΡΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΡΠΈΡΠΊΠΎΠ² ΡΡΠ΅Π±ΡΠ΅ΡΡΡ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΠΎΡΠΊΠΎΠ½ΠΎΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ΅ΡΠΎΠΏΡΠΈΡΡΠΈΠΉ, Π΄Π΅ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΠ΅ΠΊΡΠΈΡΠΎΠ²Π°Π½ΠΈΡ Π±ΠΈΠ·Π½Π΅Ρ-ΠΌΠΎΠ΄Π΅Π»ΠΈ, ΡΠΈΠ½Π°Π½ΡΠΎΠ²ΡΡ
ΠΏΠΎΡΠΎΠΊΠΎΠ², ΠΎΡΠ΅Π½ΠΊΠΈ Π±Π΅Π·ΡΠ±ΡΡΠΎΡΠ½ΠΎΡΡΠΈ ΠΏΡΠΎΠ΅ΠΊΡΠ°
Dynamics of dissolved Fe content in tributaries of Lake Teletskoe, depending on solar activity indicators
Relevance. The need to expand and deepen the understanding of the influence of solar radiation indicators on chemical characteristics of surface water, since the dependence of hydrochemical processes on periodic changes in solar activity has so far been studied extremely poorly. In addition, special attention is paid worldwide to the study of iron content in waters of rivers and lakes. Iron increased concentrations are one of the reasons for the "brownification" of surface waters in a significant part of the Northern Hemisphere. Aim. To establish a relationship between iron content and dynamics in the waters of the tributaries of Lake Teletskoe with indicators of solar activity (sunspots number, F-index). Methods. Water samples from the tributaries of Lake Teletskoe were collected into clean new polyethylene bottles in the estuaries of the rivers, from a depth of 0.5 m during the spring-summer high water and autumn low water, in 2016β2020. Content of total and dissolved Fe in the waters was determined by the ISP-MS method and by the AAS method. We used the data on solar activity indicators from the Belgian Observatory, which are freely available. Results. The total Fe content in the rivers of Lake Teletskoe basin for the period from 2016 to 2020 changes from 5 to 340 Β΅g/l. Concentrations of dissolved iron (4 to 200 Β΅g/l) do not exceed Russian standards, but they are often noticeably higher than the global average for river waters established abroad. The highest iron content, as well as the proportion of its soluble forms in the tributaries of Lake Teletskoe and in lake waters, was noted in 2016. It is probably due to the highest rates of solar activity. They cause certain changes in the environment β such as an increase in air temperature and water evaporation, and decrease in river flow, which accompanied by growth in concentrations of chemical elements in surface waters. Since 2016, there has been a steady decrease in dissolved iron concentration in surface natural waters of Lake Teletskoe basin, which may be a consequence of a decrease in solar radiation intensity in recent years
Patterns of calcium oxalate monohydrate crystallization in complex biological systems
The paper presents the features of calcium oxalate crystallization in the presence of additives revealed through experimental modeling. The patterns of phase formation are shown for the Ca{2+} β C[2]O[4]{ 2β} β H[2]O and Ca{2+} β C[2]O[4]{2β} β PO[4]{3β} β H[2]O systems with the components and pH of the saline varying over a wide concentrations range. The effect of additives on crystallization of calcium oxalate monohydrate was investigated. It was found that the ionic strength and magnesium ions are inhibitors, and calcium oxalate and hydroxyapatite crystals are catalysts of calcium oxalate monohydrate crystallization. The basic calcium phosphate (apatite) was found to be most thermodynamically stable, which indicates its special role in kidney stone formation since it is found in virtually all stones
Autocorrelation functions of current of an arc steel-melting furnace at various technological stages
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