bluuebunny/crossref_metadata_2025_split huggingface dataset:
Perspective direction of small rivers water purification from ions of heavy metals
Authors: Yagafarova G.G. , Leontieva S.V. , Gabitova I.U. , Zinnatullina D.R. 
Published: July 2019

Abstract
The article is devoted to the actual problem of purification of small rivers from ecotoxicants. In this paper we consider the biological method of cleaning small rivers with biofilters. The degree of bioaccumulation of heavy metals by water plants by Elodea canadensis and Cladophora aegagropila on the example of the river Shugurovka of the Republic of Bashkortostan is estimated.
Prospects for the development of biogas technologies at reservoirs of energy facilities
Authors: Kalayda M L , Borisova S D 
Published: July 2019

Abstract
In connection with the increase in energy prices and the deterioration of the environmental situation, the problem of introducing biogas plants is becoming increasingly important. In this case, the selection of promising raw materials for the production of biogas becomes actual. The organization of energy-biological complexes on coolering reservoirs will allow not only to solve the problem of thermal emissions of power plants, but also to obtain biogas. The article deals in detail with the creation of energy-biological complexes at reservoirs of power engineering objects. Special attention is paid to the use of aquatic vegetation for the production of biogas, as a stage of utilization of excesses of the higher aquatic vegetation of the cooling reservoir of the power station.
Fish protection structuers on reservoirs of energy facilities as an important measure for the conservation of the herd of fish
Authors: Kalayda M L , Saetov A R 
Published: July 2019

Abstract
Directed formation of ichthyocenoses on the basis of reservoirs - energy objects - an important task for pasture aquaculture. At the energy facilities to ensure the operation of the main equipment, the main issue is water supply. The water intake structure, as the main technological element of the water supply system, must uninterruptedly take out water, at the same time functioning as a fish protection facility. According to the requirements of the Russian legislation, the effectiveness of preventing fish and other aquatic biological resources from entering water intake facilities should be at least 70%. Fish protecting device (FPD), along with high fish protection characteristics, should have a reliability that allows to maintain their functions during the entire period of operation. There are three main principles for preventing the ingress of juvenile fish into water intake facilities using FPD: ecological, behavioral and physical. At the present time, the most common at water intakes are net FPD, morally obsolete, according to many practitioners. They account for more than 60% of all FPDs. Among the promising types of fish protection structures are air-bubble type structures that operate on the principle of an ascending water-air curtain formed by a system of bottom modules with aerating nozzles. Among the advantages of this type of FPD is the positive effect on the hydrochemical state of water bodies. Aeration promotes the oxidation of organic substances in water, contributing to a decrease in the level of eutrophication of the aquatic ecosystem. Further improvement of the FPD at power facilities is important for the work on the release of valuable fish species, especially sterlet juveniles when stocking the Kuibyshev and Nizhnekamsk reservoirs.
The role of the silver carp in increase fish productivity and the reducing the level of eutrophication of eutrophication of reservoirs of Kuban basin
Authors: Moskul G A , Abramchuk A V , Pashinova N G 
Published: July 2019

Annotation
The data on the nutrition of silver carp and its role in reducing the level of eutrophication and increasing the fish productivity of the reservoirs of the Kuban basin are given.
Energy-saving management of liquid’s transportation in pipelines
Authors: Gilfanov K.H. , Bogdanova N.V. , Plotnikov V.V. 
Published: July 2019

Annotation
Transportation of coolants, oil and oil products are associated with the flow of liquid medium through pipelines of circular cross-section. When the fluids move through the pipes, pressure losses arise on the friction of the flow against the pipe wall. Reduction of wall friction, and accordingly energy loss for pumping liquid can be achieved by pulsating flow in the pipeline. The pulsating mode has acceleration phases, which corresponds to a more complete velocity and deceleration profile, which is characterized by less filled velocity profile, in comparison with a stationary flow. The mathematical model is based on the theory of the boundary layer, using the Prandtl hypothesis on the length of the mixing path. As a result of the numerical experiment, qualitative and quantitative information on the effect of harmonic oscillations of the fluid flow on the hydrodynamic flow characteristics was obtained. The influence of frequency factors and the amplitude of flow oscillations is shown, as well as one of the main characteristics determining the economic effect of the process that is pressure loss on friction along the length of the channel. A method for creating harmonic and nonharmonic oscillations is proposed.
Energy-saving technologies for soil purification from chromium (III) ions using higher plants
Authors: Ol’shanskaya Lubov’ , Politaeva Natalia , Tatarinceva E , Danilova E , Tareeva A 
Published: July 2019

Abstract
This work presents investigation of IR-irradiation influence on seeds of beans (Phaseolus), its’ growth and development affection during soil purification from chromium (III) ions by energy-saving reagentless phytoremediation technique.
On directions of improving the energy efficiency in Russia
Authors: Yudina N.A. , Dunaeva T.U. , Livshits S.A. , Katz D.B. , Enikeeva S.R. , Nikolaeva E.K. 
Published: July 2019

Annotation
The paper analyzes the structure of the energy balance of the Russian Federation for power systems, draws conclusions on the impact of HPPs in the structure of electricity generation on the price of electricity for ultimate customers. The influence of the construction of new hydropower stations on the development of waterways is considered.
Improving Energy and Environmental Efficiency of Flue Gas Cleaning at Thermal Power Plants
Authors: Zamalieva A.T. , Ziganshin M.G. 
Published: July 2019

Abstract
The aim of the work is to improve cyclone and filter dust collectors by increasing the efficiency of fine particle deposition classes PM10, PM2,5 as well as reducing energy and material costs. The analysis of existing methods of cyclonic filtration of industrial dispersed emissions is carried out. The laboratory tests of the cyclone filter, made by modernization of the cyclone CN-11-200, were performed, the aerodynamic characteristics of its operation were found. The calculated determination of the efficiency of suspension deposition from multiphase flow in the separator using a dimensionless Re
r
criterion is performed, derived from the Navier-Stokes single-phase flow equations of motion and the particle motion equation based on Newton’s law. A numerically studied the aerodynamic parameters of the cyclone on the basis of computational fluid dynamics methods. For mathematical modeling of turbulence we used the DES model
Formation and properties of a dynamic ultrafiltration membrane
Authors: Fazullin D.D. , Mavrin G.V. 
Published: July 2019

Annotation
By applying to the surface of the nylon membrane of polystyrene particles, dynamic nylon-polystyrene membranes with a final content of 3.4 % by weight were obtained. The content of polystyrene on the surface of the nylon membrane is indirectly confirmed by IR Fourier spectroscopy methods. An increase in the contact angle of the droplets of distilled water of the membrane as a result of depositing polystyrene particles on the surface of the initial membrane was revealed. According to the results of scanning electron microscopy, it was found that polystyrene particles with sizes from 0.05 to 0.2 microns are located on the surface and in pores of a nylon substrate. After applying a layer of polystyrene on the surface of the membrane, the specific productivity of the membranes decreases by an order of magnitude, due to the intensive accumulation of polystyrene particles in the pores and membrane surface. The maximum productivity of the initial and dynamic membranes is observed when the distilled water is passed through. Dynamic membrane ultrafiltration with a surface layer of polystyrene is designed to separate water-oil emulsions. The degree of separation of water-oil emulsion with a concentration of oil products of 10 g/dm3 is more than 98 %.
Mathematical modeling of Stirling engine operating modes as part of an autonomous power complex based on renewable energy sources
Authors: Gaponenko Aleksandr Makarovich , Kagramanova Aleksandra Aleksandrovna 
Published: July 2019

Abstract
The opportunity of application of Stirling engine with non-conventional and renewable sources of energy. The advantage of such use. The resulting expression for the thermal efficiency of the Stirling engine. It is shown that the work per cycle is proportional to the quantity of matter, and hence the pressure of the working fluid, the temperature difference and, to a lesser extent, depends on the expansion coefficient; efficiency of ideal Stirling cycle coincides with the efficiency of an ideal engine working on the Carnot cycle, which distinguishes a Stirling cycle from the cycles of Otto and Diesel underlying engine. It has been established that the four input parameters, the only parameter which can be easily changed during operation, and which effectively affects the operation of the engine is the phase difference. Dependence of work per cycle of the phase difference, called the phase characteristic, visually illustrates mode of operation of Stirling engine. The mathematical model of the cycle of Schmidt and the analysis of operation of Stirling engine in the approach of Schmidt with the aid of numerical analysis. To conduct numerical experiments designed program feature in the language MathLab. The results of numerical experiments are illustrated by graphical charts.
Mixing intensification
Authors: Gaynullina L.R. , Tutubalina V.P. 
Published: July 2019

Abstract
Intensification of different system mixing process, particularly in non-isothermal conditions, is a critical task for many industries, where local overheating prevention, chemical reaction acceleration or heat and mass transfer coefficient increase are required. In this regard, an experimental study of the mixing process was carried out using the transformer oil as an example. Temperature equalization time in the fluid and the mixer power consumption were used as indicators of the process efficiency. The influence of the mixer type, presence of bafflers in a vessel, and the mixer speed on the fluid mixing intensity revealed the optimal design and process parameters of the mixing units.
About heat supply schemes for settlements and city districts
Authors: Mukhametova L R , Akhmetova I G , Fedukhin A V , Makoev S O , Kalyutik A A 
Published: July 2019

AnnotationThe development of heat supply schemes is particularly relevant today as according to the Federal Law of Russian Federation of July 27, 2010 No. 190-FZ “About heat supply” after December 31, 2011, the availability of a heat supply scheme is mandatory for settlements and urban districts in Russian Federation. Heat supply schemes are developed in accordance with the Order of the Government of the Russian Federation of February 22, 2012 No. 154 “On requirements for heat supply schemes, the procedure for their development and approval”.
Automated control system for coolant parameters with remote access
Authors: Safarov I. M. , Khamatkhanov D.I. 
Published: July 2019

Annotation
This article proposes an automated system for monitoring and controlling the parameters of the coolant in the housing and communal services as part of the energy saving program. The proposed system is based on industrial controllers with Ethernet 100 Base-T, RS-232 and RS-485 interfaces, as well as software created in the CoDeSys software environment.
Investigation of the aerosol particle deposition formation due to the capture of the filter fiber
Authors: Soloveva O V , Solovev S A , Misbakhov R Sh , Yafizov R R 
Published: July 2019

Abstract
In this paper, an iterative model is constructed for the formation of a sediment of inertial aerosol particles on the surface of a cylindrical fiber, taking into account its effect on the gas flow and further settling of the particles. Parametric calculations are carried out for various values of the porosity of a number of fibers and the Stokes number, which determines the inertia of the particles. The shape of the sediment varies depending on the particle size. For strongly inertial particles, the thickness of the layer of settled particles is close to uniform. For weakly inertial particles with a small porosity of a number of fibers, a nonuniform distribution of the thickness of the deposited layer along the streamlined surface is observed.
The Fourier-T method to solve the heat transfer problem in combustion chambers of various configurations
Authors: Toropov E.V. , Lymbina L.E. 
Published: July 2019

Annotation
With the use of laws of conservation of different substances, the transfer equation in the combustion chambers is formulated as a partial differential equation of the second order. The solution of the obtained equation by the Fourier-T method is proposed, which helps to evaluate the influence of various factors on the space-time temperature field of the combustion chamber quickly; it is shown that the generalized Nusselt number mainly affects the solution. The developed technique allows us to estimate the temperature field of the furnace at a certain flow rate of the combustion products at the inlet of the combustion chamber as well as their composition and temperature using the analogy with heat conductivity processes. The conditions for the reliable application of the developed model are determined. Applying the theorem on multiplication of solutions, we may estimate the temperature field in the combustion chambers of various structural configurations which is an extension of a zoned method.
Current Situation and Countermeasure of Regional Natural Conservation: A Case Study of Shandong Province, China
Authors: Luo Yujie , Yuan Yifu 
Published: July 2019

Abstract
Nature reserves are conducive to the restoration of ecological environment, species conservation, and maintenance of regional ecological security. China has made remarkable achievements in the field of nature reserves, but in recent years, with the development of social economy, the work of nature reserves also faces many new challenges and opportunities. Taking Shandong Province as an example, this study clarified the driving factors of the current pattern by analyzing the main information of nature reserves. At present, the challenges faced by nature reserves mainly include lagging legal system, imperfect management mechanism, degradation of major ecosystems, and contradictions between protection and development. Based on the national policy and the practice of nature reserve management, four suggestions were given in this study: improving the legal system, restoring the structure and function of key ecosystems, establishing national parks, and giving more policy support.
Planning Events Analysis Based on Homo Urbanicus Theory ——an Example of a Teaching Building in Wuhan University
Authors: Jie Zhou , Xuechao Zhang , You Zou 
Published: July 2019

Abstract
The demolition of the NO. 1 teaching building in Wuhan University was related to multiple complex contradictions of various people, matters, time and spaces. The Homo Urbanicus theory offers a new way to figure the essence of this planning event out. Science of Human Settlement provides theoretical contexts of multi-level and multiple points of view. The considering method of Homo Urbanicus theory is to extract typical templates and to seek their consensus in values. Based on the above, this paper analyses the problems of a planning event about why the NO.1 teaching building in Wuhan University was “constructed unreasonably”, why it was “demolished in dispute” and how to be “reconstructed in hope” and puts forward a new way to solve it.
Research on Development of Fluoride Pollution Control Technology in China Based on Patent Document Analysis
Authors: He Z L 
Published: July 2019

Abstract
In order to clarify the technical layout and development trend of fluorine pollution control technology in China, this paper analyzes the patent applications related to domestic fluorine pollution control from 1985 based on the SooPAT patent search database. It also reveals the overall development trend of patent technology in this field. This paper concretely analyzes the annual changes trend of the patent, the legal status of the patent, the focus of technology research and layout, patent-related subjects. Finally, this paper summarizes the fluorine pollution control technology on the base of patent data analysis.
Comprehensive assessment of farmland resource for countries along the Belt and Road—Based on Entropy Weight Method
Authors: Tian Renqu , Yang Zisheng 
Published: July 2019

Abstract
Farmland resource performance evaluation results are important for enterprises to make overseas farmland investment decisions. Based on Entropy Weight Method, this paper has made analysis and appraisal of farmland resource performance of the countries along the Belt and Road in 2015. First we establish the farmland resource evaluation indicator system with quantitative indicator and sustainable development indicator, and a total of 8 sub-indicators. Second, we use Entropy Weight Method to calculate the weight of each sub-indicator. Third, we order the weighted scores which have been evaluated of countries along the Belt and Road. According to our analysis, the top 5 countries with high farmland resources are: Russian Federation, Lao People’s Democratic, Republic Sierra Leone, Brunei and Myanmar. We hope our research can provide scientific reference for China overseas farmland investment decision-making along the Belt and Road.
Analysis of the Situation Faced by the Construction of Central Enterprise Ideology
Authors: Han Wang , Youzi Wang , Liyu Xia , Xinling Wang 
Published: July 2019

Abstract
In recent years, with the rapid development of new media technologies, the media landscape and the ecology of public opinion have undergone profound changes. Relying on the new media platform of big data, cloud computing, internet of things, mobile internet, artificial intelligence, it has strong openness and interactivity. The anonymization of public speech, the flattening of information entry barriers, and the fragmentation of the spread of issues have ensured the user’s right to learn and express, while also releasing the voice of the people. The public opinion environment tends to be complex and changeable, and the difficulty of ideology guiding work is increasing. The central enterprise is the basis of the Communist Party’s ruling, an important force for maintaining political stability, and an important cornerstone for the party and the people to rely on. It is inevitable to follow the requirements of the Party Central Committee, strengthen the party’s propaganda and propaganda, and firmly grasp the initiative of the leadership of ideological work.
Study on sumatran rhinoceros based on ecological game model
Authors: Ma Yusong , Li Yuting , Li Yunqing , Zhang Wuyu 
Published: July 2019

Abstract
In this paper, the survival status of the sumatran rhinoceros was studied, the ecological game of the sumatran rhinoceros was put forward according to the critically endangered status, the differential dynamical system model of the sumatran rhinoceros and food was established, and the relationship between the parameters in the model and the land and environmental conditions was discussed. According to the value range of the four indicators, the ecological environment was divided into three conditions of food abundance, food shortage and critical state, so as to obtain the impact and requirements of the sumatran rhinoceros on the ecological environment. The results show that the sumatran rhinoceros lives in cycles under different land area conditions. Analysis from the perspective of the evolution of the ecological environment, the sumatran rhinoceros and food together form an ecological system, the abundant of food can cause sumatran rhinoceros populations, the number of the sumatran rhinoceros too much then can reduce the quantity of food, after reducing the number of the sumatran rhinoceros and will cause the increase in the number of food, this phenomenon is called ecological cycle, namely three environmental situation circulation phenomenon over time. Finally, according to the differential equation, migration is one of the ways that the sumatran rhino can continue to survive when the ecological environment changes.
Research on Pollutant Diffusion Law in Confined Space
Authors: Du Zhehua , Lin Xin 
Published: July 2019

Abstract
Pollutant diffusion law in typical confined space is special. This paper studied an air condition carriage with crowded passengers. The law of CO2 diffusion was studied by CFD simulation method. The result shows that at the 1.7m height from the floor, CO2 concentration in the region away from return air inlet and near the end of carriage is significantly lower than that in the region near return air inlet and inner end of carriage. The pollutant CO2 concentration in the region near return air inlet and at the 1.1m height of the passengers’ seats of both sides in the carriage is overall higher than that in the region away from return air inlet and at the 1.1m height of the passengers’ seats of both sides in the carriage. The research provides the theoretical base for arranging measurement points to monitor contamination content and improving airflow in the confined space.
Environmental effects and relationship between soil organic matter and total nitrogen in Lushan Mountain, China
Authors: Ma Yingjun 
Published: July 2019

Abstract
The content of soil total nitrogen (STN) and soil organic matter (SOM) is important in soil fertility. We analysed four typical soils (red soil, yellow soil, yellow brown soil and brown soil) in Lushan Mountain area to clarify the environmental effects and relationship between STN and SOM. The results showed that there was a significant correlation between soil organic matter and total nitrogen in Lushan soil, which can be established by stepwise regression analysis. SOM and STN may have negative impacts on the growth of plants on the red soil and high STN may lead the underground water into eutrophication. This study is of positive significance for understanding the correlation between soil nutrients, rational development and utilization of soil nutrients in Lushan Mountain.
Analysis of Consumption Behavior Vegetables by Residents in Beijing
Authors: yinghui Huang 
Published: July 2019

Abstract
Vegetable is the important part of the daily consumer market by residents. It is of great significance to analyze consumption behavior of vegetables by residents in Beijing as a metropolis. Taking the residents in Beijing as the research object, the essay made a survey on consumption behavior by the means of combining questionnaires and interviews. The survey shows that the consumption behaviors of vegetables by resident in Beijing are habitual, rational and economical. The safety, convenience, nutrition and price are the factors that the residents focus on when purchasing vegetables. Based on these, some recommendations are made such as expand marketing channels, restrain the prices of vegetables, etc.