bluuebunny/crossref_metadata_2025 huggingface dataset:
Database-driven high-throughput study of coating materials for hybrid perovskites
Authors: Seidu Azimatu , Himanen Lauri , Li Jingrui , Rinke Patrick
Published: July 2019

We developed a high-throughput screening scheme to acquire candidate coating materials for hybrid perovskites. From more than 1.8 million entries of an inorganic compound database, we collected 93 binary and ternary materials with promising properties for protectively coating halide-perovskite photoabsorbers in perovskite solar cells. These candidates fulfill a series of criteria, including wide band gaps, abundant and non-toxic elements, water-insoluble, and small lattice mismatch with surface models of halide perovskites.
Entangling two magnon modes via magnetostrictive interaction
Authors: Li Jie , Zhu Shi-Yao
Published: July 2019

We present a scheme to entangle two magnon modes in a cavity magnomechanical system. The two magnon modes are embodied by collective motions of a large number of spins in two macroscopic ferrimagnets, and couple to a single microwave cavity mode via magnetic dipole interaction. We show that by activating the nonlinear magnetostrictive interaction in one ferrimagnet, realized by driving the magnon mode with a strong red-detuned microwave field, the two magnon modes can be prepared in an entangled state. The entanglement is achieved by exploiting the nonlinear magnon-phonon coupling and the linear magnon-cavity coupling, and is in the steady state and robust against temperature. The entangled magnon modes in two massive ferrimagnets represent genuinely macroscopic quantum states, and may find applications in the study of macroscopic quantum mechanics and quantum information processing based on magnonics.
Ultrafast infrared spectroscopy with single molecular ions
Authors: Schindler Philipp
Published: July 2019

We propose a method to investigate the vibrational dynamics of single polyatomic molecular ions confined in a Paul trap. Quantum logic techniques are employed to detect the recoil of single photon absorption events on the molecule via a co-trapped atomic ion. In particular, the recoil is mapped onto the electronic state of the atom which can be read out with high fidelity. This recoil detection serves as the basis for a pump-probe scheme to investigate ultrafast molecular dynamics, such as intra-molecular vibrational redistribution. The total recoil from the interaction with a sequence of ultrafast laser pulses with the molecular vibration is measured. This work discusses the experimental requirements and expected performance for multiple molecular ions with masses ranging from 17 to 165 Dalton.
The chiral biquadratic pair interaction
Authors: Brinker Sascha , Dias Manuel dos Santos , Lounis Samir
Published: July 2019

Magnetic interactions underpin a plethora of magnetic states of matter, hence playing a central role both in fundamental physics and for future spintronic and quantum computation devices. The Dzyaloshinskii–Moriya interaction,

D

ij

·
(

S

i

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, being chiral and driven by relativistic effects, leads to the stabilization of highly-noncollinear spin textures such as skyrmions, which thanks to their topological nature are promising building blocks for magnetic data storage and processing elements. Here, we reveal and study a new chiral pair interaction,

C

ij

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(

S

i

×

S

j

)
(

S

i

·

S

j

)

, which is the biquadratic equivalent of the DMI. First, we derive this interaction and its guiding principles from a microscopic model, and we connect the atomistic form to the micromagnetic one. Second, we study its properties in the simplest prototypical systems, magnetic 3d transition metal dimers deposited on the Pt(111), Pt(100), Ir(111), and Re(0001) surfaces, resorting to systematic first-principles calculations. Lastly, we discuss its importance and implications not only for magnetic dimers but also for extended systems, namely one-dimensional spin spirals and complex two-dimensional magnetic structures, such as a nanoskyrmion lattice found in an Fe monolayer on Ir(111).
The co-pollutant cost of carbon emissions: an analysis of the US electric power generation sector
Authors: Dedoussi Irene C , Allroggen Florian , Flanagan Robert , Hansen Tyler , Taylor Brandon , Barrett Steven R H , Boyce James K
Published: July 2019

Fossil fuel combustion releases carbon dioxide into the atmosphere along with co-pollutants such as sulfur dioxide, nitrogen oxides, and others. These emissions result in environmental externalities primarily in terms of climate and air quality. Here we quantify the cost of co-pollutant emissions per ton of CO2 emissions from US electric power generation. We measure the co-pollutant cost of carbon (CPCC) as the total value of statistical life associated with US-based premature mortalities attributable to co-pollutant emissions, per mass of CO2. We find an average CPCC of ∼$45 per metric ton (mt) of CO2 for the year 2011 (in 2017 USD). This is ∼20% higher than the central Social Cost of Carbon (SCC) measure of climate damages that was used by the Obama administration in its regulatory impact analysis for the Clean Power Plan (CPP), and >8 times higher than the SCC used by the Trump administration in its analysis for the Plan’s repeal. At the state-level, the CPCC ranged from ∼$7/mt CO2 for Arizona to ∼$96/mt CO2 for New Jersey. We calculate the CPCC trends from 2002 to 2017 and find a 71% decrease at the national level, contributing to total savings of ∼$1 trillion in averted mortality from power plant emissions over this period. By decomposing the aggregate and fuel-specific co-pollutant intensities into simultaneous (CO2-driven) and autonomous components, we conclude that the CPCC trends originated mainly from targeted efforts to reduce co-pollutant emissions, e.g. through fuel switching (from coal to natural gas) and autonomous changes in co-pollutant emissions. The results suggest that the overall benefit to society from policies to curtail carbon emissions may be enhanced by focusing on pollution sources where the associated air-quality co-benefits are greatest. At the same time, continued efforts to reduce co-pollutant intensities, if technologically feasible, could help to mitigate the air-quality damages of the CPP’s repeal and replacement.
Potentiometric analysis of metastable carbonate water coolants of thermal power plants and heat supply systems
Authors: Chichirov A A , Filimionova A A , Gilfanov B A , Gafiatullina A A , Chichirova N D
Published: July 2019

The paper describes a new method for studying the structure of metastable carbonate solutions, based on obtaining pK- and pH-spectra of solutions from potentiometric titration data. The decoding method is used to obtain the equations for calculating the coordinates of the spectra. In the production of thermal and electrical energy in modern thermal power plants (TPP) operate with water systems that have a constantly producing phase instability. Such systems include (1) water systems in intermediate stages of water treatment, in particular lime-coagulated or clarified water after pre-treatment, (2) cooling water in the circulating cooling system (COO) of the station, (3) water heat transfer medium in conjugated heat networks, (4) boiler water. All these systems are characterized by the presence of a stabilized (metastable) solid phase, mainly calcium carbonate, capable of forming a crystalline phase of calcite under certain conditions. The crystallization process is undesirable, since it can lead to dense deposits on the heat exchange surfaces. Approximately the instability of such systems is characterized by the value of ΔQw - by changing the total alkalinity of water in time (hours, days). The method of quantitative determination of stabilized calcium carbonate in water systems of TPPs is currently lacking. Development of a technique for potentiometric analysis of carbonate-alkaline solutions.
Atomic force microscopy and IR spectrometry application in detecting the type and nature of contaminants on reverse osmosis membrane elements
Authors: Chichirova N D , Chichirov A A , Saitov S R
Published: July 2019

The main, the most acute problem of barometric technology today is reagent provision. For its stable and trouble-free operation, a complex of expensive and unique chemical reagents (biocides, antiscales, washing compositions) is required. Each manufacturer develops his own chemical composition for a certain membrane type. This leads to a significant cost rise of reagents, as well as creates a dependence of the consumer technology from a particular supplier. However, these reagents do not always meet the quality requirements - despite the guarantees provided by manufacturers, the equipment fails before the due service life as a result of deposits in the pores and on the membrane surfaces. To develop a more effective washing composition, it is required to determine the type and consist of these deposits. The report illustrates the methods for determining the consist and type of deposits on reverse osmosis membranes. The solution of the problem of reagent provision for the example of the wastewater treatment plant at the Ashalchinsky field of the extra-viscous oil of PJSC “Tatneft” is presented.
Reagent approach for silicate deposits prevention in waste heat boilers
Authors: Khasanova D.I. , Panteleev A.A.
Published: July 2019

New reagent composition with optimal phosphate:thermal polymer ratio has been developed and studied for steam-and-condensate channel protection and its corrosion prevention as well as for on-line washing to remove old silicate deposits formations. Optimal dosage and water-chemistry conditions for a medium pressure steam boiler with specified quality of feed water have been selected. The causes of silicate deposits in medium pressure waste-heat boiler have been analyzed. The reagent efficiency has been evaluated while industrial applications.
Adsorption of industrial wastewater from oil products with application of mathematical modeling
Authors: Nikolaeva L.A. , Iskhakova R. Ya.
Published: July 2019

The granulated hydrophobic sorption material created on the basis of the chemical water treatment sludge of thermal power plants “SM-5” is studied. The information basis obtained in the experiments on the kinetics of adsorption makes it possible to model the dynamics of adsorption in a fixed bed of “SM-5” granules.
Modern water treatment system for high-quality water used in the energy industry
Authors: Rakhmetova E , Kozodaev A , Zavyalova A , Kondrateva O , Zvonkova N
Published: July 2019

This article provides the detailed optimization processes and enhancement, in the field of water treatment systems, for the energy sector needs. The developing of the unique water purification system design based on modern techniques for equipment is presented according to ASTM standards. As well as the project proposes a new methodology for complex analysis of quality data after each purification section in order to manage all possible need in the water for the power plant. The analysis allows producing the more accurate selection of the filter systems, thereby prevent failures of such sophisticated and expensive equipment as reverse osmosis and continuous electrodeionization.
Definition of an optimum method of water preparation for needs of the enterprises
Authors: Rotach R.R. , Akhmetov E.A. , Gaponenko S.O.
Published: July 2019

Results of technical and economic calculations for various methods of water desalting are presented in article. The prime cost of the desalted water received by each of the considered methods is calculated (in costs of thermal and electric energy). On the basis of the obtained data conclusions are drawn on applicability of each of the considered water desalting methods.
Energy, mass-exchange and hydrodynamic efficiency of degassers at low-temperature deaeration of water for thermal power plants
Authors: Sharapov V.I. , Mingaraeva E.V.
Published: July 2019

A new technology for low-temperature degassing of the make-up water was developed using natural gas as a desorbing agent. The calculation of the energy efficiency of the developed technology for a typical power unit of the heat power plants (HPPs) is performed. Theoretically necessary and actual specific costs of natural gas are estimated to ensure the normative quality of the deaeration. The calculation of the hydrodynamic characteristics of the atmospheric deaerator at work on natural gas is presented.
Purification of natural water and wastewater from petroleum and petroleum products by sorption materials on a basis of industrial waste
Authors: Tatarintseva E A , Dolbnya I V , Bukharova E A , Olshanskaya L N , Politaeva N A
Published: July 2019

Results of experimental research of sorption purification of wastewater and surface water from petroleum and petroleum products by sorption materials on a basis of industrial waste have been given. Polyethylene terephthalate, ferritized galvanic sludge (FGS), oxidized and thermally expandable graphite have been chosen as the components of the sorption materials (SM). The sorption material on the basis of FGS has magnetic properties and it allows to extract the sorbent from water with the help of a magnetic separation. Physical and chemical properties of SM (buoyancy, water adsorption, petroleum capacity), kinetic regularities of the sorption of petroleum products by the sorption materials have been studied. Specific surface area, porosity, and particles dispersion have been determined. A possibility of using sorbents to collect petroleum products from the water surface has been shown.
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

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

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

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

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

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

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

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

Annotation

The 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.
Quick detection of gusts and its location in the reservoir pressure maintenance system
Authors: Safin M. , Shakirova K. , Mirgaleeva A.
Published: July 2019

The article devoted to theoretical and methodical materials based on the researches conducted within trial tests reverse ultra-sonic flow meters on different areas of exploited oil fields.
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

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

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

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

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

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

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

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

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

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

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.
A Study on Evolution of Exhibition Enterprises Spatial Distribution in Wuhan
Authors: Zhang Shu , Fu Kun
Published: July 2019

With the fast developing MICE industry of Wuhan, local exhibition enterprises have the evolution of spatial pattern. How the spatial pattern of exhibition enterprise is and whether it has formed a certain concentration have become the writing purpose of this paper. Based on the data of Wuhan city exhibition enterprises from 1990-2014, this paper gets these conclusions: exhibition enterprises are increasing rapidly; exhibition enterprises are distributed in the host city of Wuhan; the construction of the venue has a certain influence on the location of the exhibition enterprises; exhibition enterprises are appearing agglomeration trend.
Public Participation in Biodiversity Conservation of Chinese Nature Reserves
Authors: Tang Y
Published: July 2019

Based on the Chinese National Biodiversity Strategy and Action Plan, we identified the biodiversity conservation public affairs. This study analyzed the importance of public participation in public affairs, and identified the main participants. The survey results show that the public participates in the importance of public affairs such as the implementation of the ‘grazing and returning grassland project’, ‘supervising the illegal activities of biodiversity’, ‘local traditional knowledge survey’, and ‘protection of folk biodiversity around the nature reserve’. Cognition is higher than 4.0. The percentage of cases in the public that support the implementation of various matters is ≥50%, to ensure the scope of participation of the participants; the highest value of 11.02% of the top four is higher than the percentage of cases, to encourage the scope of participation.
Analysis of Cooperative disposal of Medical Waste Treatment and Municipal Solid Waste Incineration
Authors: Yan Chen , Kai Zhang , Jiyun Xu , Zheru Shao , Ru Ji
Published: July 2019

The main technologies and existing problems of medical waste disposal are introduced. The technical process for the cooperative disposal of medical waste treatment and municipal solid waste incineration as well as its advantages is studied. The cooperative disposal of both can effectively reduce the system investment and operation cost.
Optimizing the Development Area to take the lead in Peaks-based on Location Quotient Analysis
Authors: An Kangjing , Wang Xinzhi
Published: July 2019

The China Optimized Development Area was officially released in the National Main Functional Area Plan in 2011. It is an important population and economically intensive area of China and has a huge impact on China’s future development. Under the background of international commitment and national planning to reduce carbon emission intensity, China’s optimized development area should play a leading role. Based on the location quotient analysis method, this paper analyzes the basis and prospects of optimizing the development area to take the lead from the industrial structure level, and draws the following conclusions. From the perspective of a single city, it compares with the overall industrial structure of the country and obtains optimization. Compared with the whole country, the development zone has a better industrial structure as the basis for carbon emission peaks. The optimized development zone should continue to carry forward its advantages in industrial structure and play a leading role in China’s 2030 carbon emission peak.
Time Series Generation and Complex Correlation Assessment for Multiple Wind Farms
Authors: Xu Shenzhi , Xu Bo
Published: July 2019

Analysis and calculation of power system often requires a large number of medium and long-term wind power output series as data foundation. However, for most wind farms that have not been built or put into operation for a long time, the current output data is limited and it is difficult to support related research. It is necessary to use a limited amount of measured data to generate lots of wind power output time series that are similar to the actual data. Considering the concentrated development mode of wind power, this paper proposes a time series generation method for multiple wind farms based on the Markov Chain and Monte Carlo (MCMC) method and combined with high-dimensianal Markov process. The mixed Copula function fitting model is used to describe the spatial correlation of wind farms accurately. The measured wind power ouput is used to verify the results. It shows that the proposed method can simulate the output characteristics of single wind farm while maintaining the spatial correlation among different wind farms with geographical proximity
An economic impact evaluation of environmental policy
Authors: Wang Xiaojuan , Xu Xiaojuan , Liu Yifang , Zhao Jiaxiu , Li Haili
Published: July 2019

With the rapid development of the modern economy, the importance of improving energy efficiency and reducing environmental pollution is increasing. Developing an ecological economy is an inevitable course to achieve sustained economic growth. In order to ensure the smooth development of the green economy, the government has introduced a series of environmental protection policies. Meanwhile, a large number of environmental protection and green industries have emerged. However, the economic impact of environmental policies on environmental protection and green industries is difficult to predict. Environmental policy in national level promulgated more frequently, but these policies specifically for environmental protection industry green industry and environmental policy is not much. So the analysis of the process focused on Water Pollution Control Action Plan and public service in-depth promotion of government and social capital cooperation work notice. Results show that the Water Pollution Control Action Plan has a binding effect on the yield of green industries and public service in-depth promotion of government. In contrast, public service in-depth promotion of government and social capital cooperation work notice increases the income of the environmental protection industry, and it has a negative constraint on the green industry.
Research progress on biorefinery of lignocellulosic biomass
Authors: Dong Yixiao , Yu Haozhe
Published: July 2019

The basic concepts of biorefinery and several models of today’s biorefinery chemical platforms are introduced. According to the different utilization types of cellulose, it is divided into biorefining based on pulp and paper and biorefining based on fuel ethanol. It is proposed that biomass component separation technology is the core of biorefinery. The application of eutectic solvents in biorefinery was introduced around the separation of components. It was pointed out that the application of eutectic solvents to biorefinery is promising.
Research on the Collection and Distribution System of Container Port Group in Shandong Province
Authors: Meng Xiangru
Published: July 2019

Shandong province is of great strategic significance to China. Shandong is not only China’s third largest economy, but also the second most populous province.The GDP of Shandong province ranks among the top three in China all year round, and its total GDP is up to one-eleventh of China’s total GDP. Shandong province has occupied the most competitive province in China for many years.Firstly, the hinterland of container port cluster in Shandong province is analyzed. The railway network of container port group in Shandong province is analyzed from four vertical channels and four horizontal channels. The container port group highway network in Shandong province is studied. Finally, the waterway network of container ports group in Shandong province is analyzed.
Energy Consumption Prediction of Fused Deposition 3D Printer Based on Improved Regularized BP Neural Network
Authors: Junwen Chen , Gang Zhao , Hua Zhang
Published: July 2019

An energy consumption prediction method based on process parameters and neural network was proposed to study the inherent energy consumption characteristics of open source melt deposition 3D printer and improve energy efficiency. An improved regularized network is used for optimization to avoid over-fitting and under-fitting problems. The orthogonal test sample data were trained in MATLAB environment, and the predictive model between process parameters and energy consumption of open source melt deposition 3D printing was established. The energy consumption prediction results of BP networks and regularized networks are compared by analyzing convergence curves and network training charts. The results show that the BP network training has experienced over-fitting, resulting in a prediction energy consumption error of about 10%. The improved regularization method effectively avoids the over-fitting phenomenon and the error of energy consumption prediction is about 1%. It can effectively improve the calculation efficiency of energy consumption prediction, which shows the accuracy of this method in energy consumption prediction.
The prediction of the gas emission with artificial neural network
Authors: Xu Q , Zhou X , Man J , Jiang Q , Jin J , Zhu Y , Guo K , Jiao H , Gao W
Published: July 2019

This paper predicted the gas emission in mining face with the back propagation neural network, the radial basis function neural network and the general regression neural network. By comparing the measured values and the prediction values, it indicated that all of three artificial neural networks were capable of predicting the gas emission. And the radial basis function neural network showed the best performance in the prediction of the gas emission.
Modification of cellulose extracted from waste newspaper
Authors: Mei C T , Jiang L Y , Jiang M M , Zhou X L , Huang H
Published: July 2019

The α-cellulose was extracted from waste newspaper, and it was esterified by maleic anhydride. The effect of reaction time, temperature, ratio of maleic anhydride to α-cellulose, dosage of catalyst on the degree of esterification were studied, respectively. The weight percent gain and degree of substitution reached 40.30% and 0.6657, respectively, under the following reaction conditions: reaction time of 2.5 h, reaction temperature of 150 °C, ratio of MA to α-cellulose of 1.2 and dosage of catalyst of 10%. The structure and properties of the samples were characterized by FTIR and X-ray diffraction.