bluuebunny/crossref_metadata_2025 huggingface dataset:
RETRACTED: The Solution of Network Intellectual Property Infringement under the Background of Big Data
Authors: Wang Shuai
Published: June 2020

At present, big data applications have entered a new era. Compared with the network era, data storage and data transmission are the main content. The big data era is mainly based on data mining and data application. In the context of big data, intellectual property protection faces more severe challenges. To this end, this article proposes research on the solution of intellectual property rights infringement in the context of big data. This paper uses a combination of research methods such as literature sub-research and content analysis to conduct research. This paper finds that to resolve the infringement of online intellectual property rights in the context of big data, it is necessary to improve the system, strengthen network management, and form a social environment conducive to the operation of the intellectual property system. Support ideas, clarify measures, and strengthen law enforcement. In this era of online rampage, only by strengthening online supervision, establishing correct concepts, encouraging originality, and resisting piracy, can the origin of online intellectual property infringement be resolved.
Change of Psychology Teaching Methods in the Era of Big Data
Authors: Zhang Ping
Published: June 2020

In today’s highly competitive society, most people have different degrees of psychological problems. The development of psychology courses based on this has also received considerable attention. The integration of big data and education has promoted the reform of psychology teaching methods. However, influenced by many factors, psychology teaching methods in China are still traditional. The purpose of this paper is to study the main problems existing in the teaching methods of psychology courses in the era of big data, and to explore the specific strategies to promote the transformation of teaching methods with the support of big data technology. This article first to the era of big data and psychology course has carried on the summary of relevant, and briefly discusses the big data the significance of the development of psychology course, and then take in the form of questionnaire survey as the main experimental investigation on the teaching of psychology, according to the experimental results obtained conclusions about psychology course teaching, based on this, advances the transformation of the mode of teaching by means of big data technologies, establish efficient interactive teaching mode. The experimental results show that the existing teaching methods of psychology course result in low teaching effect, so we must reform the teaching methods.
Research on the Measurement of Manufacturing Servitization Level in Fujian Province Based on Big Data and Input-Output Table
Authors: Wu Dandan , Lin Qingjin
Published: June 2020

Under the background of a new round of adjustment and upgrading cycle of global value chain (GVC), manufacturing servitization is one of the important measures to improve the position of value chain. Therefore, this paper bases on the classification of the GVC status of the manufacturing industry in Fujian Province, using its latest data of the input-output table, through the matrix operation analysis of the complete consumption coefficient, concluding the servitization level of manufacturing in Fujian Province is fairly low, among which the manufacturing service input in the high position of GVC is slightly lower than that in the low position of GVC.
Resent Situation and Cultivation Strategy of Network Media Literacy of “Micro-blog and WeChat -Era” Youth Generation
Authors: Sun Qian
Published: June 2020

With the innovation of mobile internet technology and the popularization of smart phones, China enters a Micro-blog and WeChat Era. The government’s supervision of public opinion will also focus on micro-blogging, WeChat - messaging and other network media platforms. Youth is the main force of the emergence of network public opinion, and improving their media literacy is an important issue at present. This research provides countermeasures and suggestions for improving youth media literacy in the new era.
Application of Internet of Things Technology in Intelligent Orchard
Authors: Wang Zuliang , Yu Hongtao , Cao Chuanglue , Zhang Ting
Published: June 2020

In this paper, an internet of things (IOT) system of the intelligent agricultural is designed, and the system is described in detail. On this basis, taking kiwifruit orchard as an example, the architecture of the IOT of the intelligent orchard is designed, and the complete elements of each layer are designed in detail. The design scheme and architecture are simple and practical, which can be used as a reference for similar intelligent orchard design. The intelligent IOT system designed according to the scheme of this paper has important reference value for improving the level of orchard informatization, intelligence and standardization.
Teaching Effect and Improvement Model of College Basketball Sports Based on Big Data Analysis
Authors: Liu Yanping
Published: June 2020

Basketball has a large audience in colleges and universities(CAU) in China. College basketball has developed rapidly, and its attention has been increasing. It has promoted the disruptive change of Internet technology and brought unprecedented opportunities and challenges to competitive sports information systems. The purpose of this article is to study the effect and improvement model of college basketball sports teaching based on big data analysis (BDA). On the basis of systematically combing the characteristics, concepts, and development trends of big data, this study analyzes the teaching effects and improvement models of basketball sports in China’s CAU in the context of the era. The research results show that 60.8% of CAU in China currently use big data technology in basketball sports, which can promote the development of college basketball games, improve athletes’ level of competition, and enhance the enjoyment and interest of basketball games. In addition, 90.6% of college physical education teachers believe that teaching based on BDA can also effectively help the team’s daily training, arrange training plans for coaches and give guidance.
Optimization Application of Fresh Agricultural Products Efficient Logistics Distribution System from the Perspective of Big Data
Authors: Cui Xiaoning , Xie Chao
Published: June 2020

As a sunrise industry in the development of modern agriculture, the development of fresh agricultural products industry has a huge space. Because of its various categories, and planting all over the country, the logistics distribution problems. The idea of “Internet +” modern agriculture combines big data with fresh agricultural logistics. By analyzing the current situation and mode of logistics distribution of fresh agricultural products, we find out the weak links of fresh agricultural products logistics distribution, and analyze the best way of fresh agricultural products logistics distribution system by using big data technology, which can effectively reduce the wastage of fresh agricultural products in logistics and transportation. Provide optimization platform for logistics distribution between regions. It is expected to provide important theoretical and practical guidance for the development of modern logistics big data of fresh agricultural products.
Predictive Analysis of New Energy Vehicle Life Cycle Based On Logistic Model
Authors: Fang Jian , Shao Fang , Li Mingyue
Published: June 2020

This article uses (new energy vehicle or electric vehicle or hybrid vehicle or fuel cell vehicle or hydrogen energy powered vehicle or solar vehicle) as the search key, Based on the new energy vehicle invention patent data retrieved in the SooPAT patent search engine, The logistic model is used to analyze the life cycle of China’s new energy vehicle technology, to predict and analyze the technology, and to summarize the development stage of China’s new energy vehicle technology. Research shows that China’s new energy vehicle technology has begun to sprout from the early 1990s. After a 23-year technology introduction period, it entered the growth stage in 2014, entered a mature period in 2020, and is expected to enter a recession in 2026. Finally reveal the current status and future development trends of technology in this field in China.
Tourism Big Data Construction and Application Strategy Analysis -- Take Qiqihar Tourism Cultural Resources Publicity as an Example
Authors: Li Xiangkun , Tian Zhiwei , Tian Mingli , Han Yunfeng , Li Ang , Zhang Xuejuan , Yan Di , Chen Xinxin
Published: June 2020

With the rapid promotion of big data on the Internet, the construction of “big data” in all walks of life has begun to take root. With the continuous rise of smart scenic spots and smart tourism, it is possible to obtain massive tourism big data. The purpose of this paper is to analyze the construction and application strategy of tourism big data based on the promotion of tourism cultural resources in Qiqihar. First of all, it analyzes the advantages and applicability of spark big data platform, and expounds the system module functions from three main aspects: background management module, information service module and big data analysis module. After studying the algorithm of scoring function, it selects the most commonly used centralized data storage engine on MySQL 5.6.17 for research and test. The experimental results show that the InnoDB storage engine takes 10 to 100 times more time than other engines, and the archive storage engine has the advantages of compressing storage and saving space, which is very suitable for storing visitors’ access information. The platform collects the cultural resources of Qiqihar, a new tourism city, through fine classification and index of resources, graphic and multimedia.
Export Effect of FTA - Based on Smart Economy
Authors: Guo Chuandao
Published: June 2020

In the Sino-US trade war, China’s exports have been affected to a certain extent. China needs to develop smart economy to eliminate the crisis. In the uncertain situation of Sino-US trade relations, how to maintain the driving force of foreign trade for economic growth has become the top priority of China’s trade policy. It is a good choice to seek new market and open up the original market. Establishing regional trade agreements with trading partners is a good trade policy tool. In order to examine the impact of FTA on China’s exports, this paper selects the data from 2000 to 2011 to test the effect of FTA signed by China on China’s exports. In this paper, the least square estimation method is used. The results show that the FTA signed by China has promoted China’s exports by more than 50%.
Development and Thinking of MOOC in the Era of Big Data
Authors: Li Huan
Published: June 2020

With the rapid development of the Internet and the widespread application of cloud computing-based information storage and data mining technologies, the big data hidden behind information platforms is no longer silent, and there are huge treasures behind seemingly worthless flowing data More and more people are paying attention. This article studies the status quo of MOOC under the background of big data, and puts forward effective suggestions to promote the sustainable development of MOOC.
Application of Big Data in the Management System of “Second Classroom Education” Platform in Universities
Authors: Cao Aiping , Xue Chunmei , Zhu Wanping
Published: June 2020

Second classroom education, as an important part of expanding education, is an important part of the talent training program and an important way to reform the talent training model. With the advent of the era of big data, the second classroom education in colleges and universities uses the corresponding artificial intelligence model and information technology system, thereby greatly improving the management function of the second classroom education. This essay explains the importance of a “second classroom education” platform management system in the era of big data, and analyzes the current situation and problems of system management. It has been proved that the use of big data is helpful to guide and help college students to participate in the second classroom activities efficiently, so that the ability of college students is fully developed.
Research on the Construction of Post Competency Model of Informatization Talents Based on Bimodal IT Mode Under the Background of Digital Transformation——Take a Power Grid Company as an Example
Authors: Hu Bo , Wang Jianhong , Yang Ying , Mao Chengjie , Li Ying
Published: June 2020

Under the background of digital transformation, the rapid development of information technology promotes the transformation of business model of power grid enterprises. The demand difference between traditional business and new business for information construction is gradually significant, which puts forward new requirements and challenges for the ability of information talents. Based on the theory of Bimodal IT and the theory of post competency model, combined with the current situation and characteristics of the informatization development of a power grid company, this paper uses literature research, workflow analysis, expert interview, questionnaire survey and other methods to build the traditional mode and the new mode of Bimodal IT talent post competency quality model, and analyzes the application of the model in the power grid enterprise, so as to It will lay a foundation for the construction and training of information professionals in the future power grid enterprises.
The Influence of Music Appreciation Courses on The Formation of College Students’ ideological Quality under The Environment of Big Data
Authors: Cui Yong
Published: June 2020

At present, with the deepening of China’s education system reform, China’s music education is facing a rare opportunity to develop, music education developing the students’ quality comprehensively, promoting the construction of socialist spiritual civilization will play a greater role. This article will music combined with large data environment in the school, to explore big data, and the practicality of music education in education, some problems and try to combine big data with innovative ideas to solve these problems, in order to enrich the content of music of music on college students’ thought positive impact of sustainability. Finally, after expounding the relevant concepts and theories, this paper demonstrates the feasibility of bringing positive influence of music appreciation course on the ideological quality of college students behind the use of big data technology from the aspects of music education methods, approaches, evaluation, contents and objects.
Paradigm of Historiography, Based on Historical Methodology of Information
Authors: Li Wenping , Jing Jing
Published: June 2020

Based on the analysis of the application of the paradigm in the study of history and the characteristics of information technology, this paper expounds the advantages of the paradigm in the study of history in information era. Using the methods of document analysis, content analysis and case study, this paper makes an in-depth analysis concerning the changes of historical research methods brought by information technology. It is believed that the use of information technology makes the framework of historical research more reasonable, the data analysis more accurate, and the protection and display of historical data more intuitive. In addition, the paper explores the promoting effect of the research method on historiography, and this new method is the supplement of the research paradigm of new historiography. paper also discusses the unique advantages of historical research methods such as historical digitization, film and television history, big data technology and quantitative database.
Psychological Resilience Characteristics and Improvement Strategies of “Internet plus” Engineering Normal College Students
Authors: Gong Zhihui
Published: June 2020

Psychological resilience is a necessary psychological quality for engineering normal college students to adapt to the social development and personal healthy growth. To explore the characteristics of “Internet plus” engineering and technical normal college students’ psychological resilience, we can use Hu Yueqin and Gan Yiqun’s Psychological resilience Scale Chinese Adolescent(RSCA) compiled in 2008 to conduct a questionnaire survey, which consists of five dimensions: Goal focus, emotional control, interpersonal assistance, family support and positive cognition. Taking 320 engineering normal college students as the object of study, this paper analyzes some characteristics of psychological resilience of engineering technology normal college students at present and finds out that the characteristics of the current engineering technology normal college students are as follows: There was no significant difference in sex, major and birthplace among engineering and technical normal college students, but the positive cognition and overall psychological l resilience of the only child were significantly lower than that of the non-only child. Moreover, this paper discusses the strategies to improve the psychological resilience of engineering technology normal college students from four aspects: society, school, family and individual.
Current Situation and Coping Strategies of College Students’ Academic Stress Based on Internet Background
Authors: Gong Zhihui
Published: June 2020

In order to investigate the current situation of college students’ academic stress under the background of the Internet and find out the coping strategies to relieve the academic stress, 313 college students in Jilin Province were tested by random sampling method, and the obtained data were analyzed and processed by spss24.0. The results showed that college students experienced higher academic stress under the background of the Internet. Specifically, the academic stresses experienced by college students are, in descending order, the stress of academic competition, the stress of academic prospects, the stress of academic burden, the stress of family expectations, the stress of learning results, the stress of learning atmosphere and the stress of learning conditions. In order to relieve the academic stress of college students, coping strategies can be formulated from four aspects: government, school, family and individual.
Influence of New Media Technology on the Reading Habits of Contemporary College Students
Authors: Ding Mingxiu
Published: June 2020

As the continuous development of society, the level of science and technology in our country is constantly improving, the development speed of new media technology is constantly accelerating, and the influence on people’s production and life is becoming more and more tremendous. New media technology has influenced people’s reading. Different from paper reading, new ways of reading emerge in an endless stream. New media reading and traditional reading forms blend with each other, creating a new reading pattern, which has both advantages and disadvantages. In order to ensure the quality of college students’ reading, relevant parties should deeply analyze the influence of new media technology on college students’ reading habits, and actively exert the advantages of new media technology to ensure the quality and effect of college students’ reading.
Utilizing Seasonal ARIMA Model for price of live pig in Henan
Authors: Guo Shumei , Guo Jie , Li Xinna , Yang Jiandong
Published: June 2020

In this paper, the SARIMA model is used to analyze the monthly pig price data of Henan Province from 2005.01 to 2019.10, identify the model, and predict the price in short time. It’s show that the model fits well.
Innovation of Hidden Ideological and Political Education Path of College Students from the Perspective of New Media
Authors: Wang Shengli
Published: June 2020

As for the education of college students, we should make full use of the advantages of educational resources of new media technology. This paper aims to study the innovative path of college students hidden ideological and political (IAP) education from the perspective of new media. First of all, this paper conducts theoretical research on new media and recessive IAP education, and then expounds the feasibility, feasibility, and innovation path of developing and using new media resources in recessive IAP education in colleges. Finally, the random survey of students, according to the questionnaire, statistical data. Experimental results show that 32.47% of college students frequently use new media technology, 51.8% use it occasionally, and 15.73% never use it. In addition, 91.92% of 693 college students thought that recessive IAP education was needed; 7.36% thought it could be tried; 0.72% thought it was unnecessary. From this we can see that the hidden IAP education of college students has generally received the attention of students. Colleges should adopt the form of implicit education that students are willing to accept.
Path of Community Education with Chinese Feature from the Perspective of Smart City
Authors: Zhou Jieqiong
Published: June 2020

Urban communities are a concentrated gathering place for urban resident. The healthy and orderly development of urban communities is inseparable from the healthy and effective development of Education with Chinese Feature in urban communities. This article uses a combination of multiple research methods to view the smart city. The path of community Education with Chinese Feature is analyzed and combined with reality, the problems and reasons existing in the current path of community Education with Chinese Feature are pointed out, these problems and reasons are analyzed, and relevant solutions are proposed. The research in this paper finds that there are many problems in the path of Education with Chinese Feature in the community from the perspective of smart cities. The reasons for these problems are also diverse. Therefore, this article proposes some relevant solutions. I hope that the research in this paper can give the community Education with Chinese Feature provides some references.
Empirical Analysis on Foreign Economic Trade of Smart City under the Background of Free Trade Agreement
Authors: Zhang Wenli , Zhao Yao , Lin Fuqiang , Zhao Feier
Published: June 2020

Taking the construction of smart city in Yantai as an opportunity, this paper analyzes the current situation of foreign trade under the background of free trade agreement, explores the main factors affecting the level of trade, and puts forward feasible Suggestions for the development of foreign trade in Yantai based on the construction of smart city. Through the analysis of the trade flow between Yantai and 13 major trading countries(regions), the time-varying attenuation stochastic frontier gravity model is constructed to explore the main factors affecting Yantai’s foreign trade, and the total trade efficiency of Yantai is analyzed. The research shows that the total trade efficiency presents an overall increasing trend, and the trade and population size of Yantai have a significant impact on the trade flow. In the process of building a smart city, the planning and integration of Yantai’s foreign trade should be carried out from various aspects to further improve the trade efficiency.
Photo-activated platelet-rich plasma (PRP)-based patient-specific bio-ink for cartilage tissue engineering
Authors: Irmak Gülseren , Gümüşderelioğlu Menemşe
Published: June 2020

Nowadays, scientists focus on the development of tissue-specific and personalized bio-ink that can be used in 3D bioprinting technologies. Platelet-rich plasma (PRP) is a person-specific source that is used as a therapeutic adjunct for the treatment of cartilage damage because it offers a cocktail of growth factors that are necessary for wound healing and tissue regeneration. However, PRP treatments in the clinic are not satisfactory and require upgrading, especially the point of maintaining bioactivity. In this study, we presented PRP as a photo-activated and photo-crosslinkable bio-ink in terms of tissue-specific structures for the first time. We achieved long-term and constant rate growth factor release and bioactivity protection of PRP with satisfactory mechanical characteristics. Photo-crosslinked PRP hydrogel was enabled by the addition of microwave-induced methacrylated gelatin (Gel-MA), which is connected to platelets in PRP via integrin receptors in its structure and chemically cross-linked upon UV irradiation (300–500 nm). Photo-activation of PRP was realized by a polychromatic light source in the near-infrared region (PAC, 600–1200 nm). Our results showed that Gel-MA/PRP hydrogels with the desired mechanical properties (low degradation rate and high mechanical strength) released growth factors at a constant rate for the long-term by the periodic PAC application. In vitro cell culture studies (viability, proliferation, morphology, histology, immunochemistry, biochemistry, gene expression analyses) proved that proliferation and differentiation of the ATDC5 cells increased in the periodically light-applied Gel-MA/PRP hydrogel without any external chemical agents.
Enhancing the fire weather index with atmospheric instability information
Authors: Pinto Miguel M , DaCamara Carlos C , Hurduc Alexandra , Trigo Ricardo M , Trigo Isabel F
Published: June 2020

The Fire Weather Index (FWI) is widely used to assess the meteorological fire danger in several ecosystems worldwide. One shortcoming of the FWI is that only surface weather conditions are considered, despite the important role often played by atmospheric instability in the development of very large wildfires. In this work, we focus on the Iberian Peninsula for the period spanning 2004–2018. We show that atmospheric instability, assessed by the Continuous Haines Index (CHI), can be used to improve estimates of the probability of exceedance of energy released by fires. To achieve this, we consider a Generalized Pareto (GP) model and we show that by stepwisely introducing the FWI and then the CHI as covariates of the GP parameters, the model is improved at each stage. A comprehensive comparison of results using the GP with the FWI as a covariate and the GP with both the FWI and CHI as covariates allowed us to then define a correction to the FWI, dependent on the CHI, that we coined enhanced FWI (FWIe). Besides ensuring a better performance of this improved FWI version, it is important to stress that the proposed FWIe incorporates efficiently the effect of atmospheric instability into an estimation of fire weather danger and can be easily incorporated into existing systems.
Compelling bounds on equilibration times—the issue with Fermi’s golden rule
Authors: Heveling Robin , Knipschild Lars , Gemmer Jochen
Published: June 2020

Putting a general, physically relevant upper bound on equilibration times in closed quantum systems is a recently much pursued endeavor. In 2017 Phys. Rev. X 7 031027 García-Pintos et al suggest such a bound. We point out that the general assumptions which allow for an actual estimation of this bound are violated in cases in which Fermi’s golden rule and related open quantum system theories apply. To probe the range of applicability of Fermi’s golden rule for systems of the type addressed in the above work, we numerically solve the corresponding Schrödinger equation for some finite spin systems comprising up to 25 spins. These calculations shed light on the breakdown of standard quantum master equations in the ‘superweak’ coupling limit, which occurs for finite sized baths.
Seasonal and regional variation of particulate matter dispersion in Yangon City and Taunggyi City, Myanmar
Authors: Nway Nay Chi , Aung Win Yu , Yi Ei Ei Pan Nu , Thant Zarli , Yagishita Mayuko , Ishigaki Yang , Suzuki Takehiro , Nakajima Daisuke , Win-Shwe Tin-Tin , Mar Ohn
Published: June 2020

Particulate matter (PM) pollution is well-known to be associated with hazardous health outcomes. Data on the PM concentrations in Myanmar are, however, limited. Since, it is very important to determine the air pollution status for further prevention of PM-related health risks in exposed populations, we conducted this preliminary study to assess the PM2.5 and PM10 concentrations in Yangon and Taunggyi Cities during the dry and wet seasons. The PM measurements were made by mobile sensing using Pocket PM2.5 Sensors (Yaguchi Electric Co., Ltd., Miyagi, Japan) in six randomly selected townships of Yangon from January 25th-29th 2018 (dry season) and September 15th-19th 2018 (wet season) and seven quarters (townships are termed as quarters in Taunggyi) of Taunggyi from July 19th-22nd 2018 (wet season). The findings revealed that the PM concentrations in Yangon were significantly higher in the dry season than in the wet season. In the wet season, the PM levels in Yangon dropped to the WHO guideline. However, while the PM10 levels were higher in Taunggyi than in Yangon, the PM2.5 concentrations were significantly higher in Yangon than in Taunggyi. The highest PM levels were found in the Hlaing Tharyar township of Yangon and Myo-ma quarter of Taunggyi among the measured locations. In conclusion, our findings indicated significant seasonal variations in the PM concentrations in Yangon and significant regional variations between the two cities within the same season.
Investigation on Performance Evaluation of Corrugated Low Finned Tubes Oriented for Energy Saving
Authors: Ren Bin , Pu Zhe , Tang Xiaoying , Si Sun , He Aini , Lu Hongliang
Published: June 2020

Heat exchangers are the energy facilities that exchange heat in process industries.Corrugated low finned tube is a kind of helically corrugated tube with trapezoidal shape groove. In this paper, the comparison approach is adopted to evaluate the overall performance of corrugated low finned tubes. The heat transfer and friction factor correlations were firstly introduced. Then the overall performance was evaluated for the identical pressure drop and identical pumping power. Finally, the performance evaluation criteria were fitted as the function of Reynolds number, Prandtl number, pitch to diameter ratio and rib height to diameter ratio. The results showed thatboth the evaluation factors at identical pumping power and at the identical pressure drop are greater than 1.0 over the entire Reynolds number for all the enhanced tubes, indicating that the enhanced tubes have the second best performance oriented from energy-saving.
Economic Analysis of Low-pressure Economizer Retrofit on 670t/h Coal-fired Unit
Authors: Zhou Xingang , Huang Xinyuan , Ding Lirong , Liu Jinglong , Duan Chuanjun
Published: June 2020

After long operation, heat transfer characteristics and flue gas pressure drop of low-pressure economizer are deviated from design value seriously. Through low-pressure economizer retrofit on a 670t/h coal-fired unit, the flue gas pressure drop is decreased to 597.04pa, less than the guarantee value 750Pa, the water saving of desulfurization spraying is 25.92t/h, the reduction of coal consumption for power generation is 2.80g/kW·h. Its energy-saving effect is obvious and transformation expectation is achieved.
Discussion on Standardization of Energy Consumption Quota in Public Institutions
Authors: Lan ZHANG , Yan BAI , Xue BAI , lijuan ZHANG , yanmei YANG
Published: June 2020

The compilation process of the quota standard of public institutions is the self-checking behavior of their own energy consumption. By analyzing the energy usage and characteristics of different types of public institutions, the refinement of energy conservation management of public institutions is gradually realized. This article introduced the background of energy consumption quota management for public institutions in China and the current situation of energy consumption quota of public institutions at home and abroad, determined the energy quota management mechanism of public institutions, proposed methods of the determination of application scope, the classification of organization, the selection of energy consumption quota index and the determination of energy quota value according to related requirements, and discussed the foreground of applying energy consumption quota standards for public institutions.
Study of Heat Transfer Performance of Insulating Layer of Molten Salt Storage Tank
Authors: Yue Song , Liu Xueqing
Published: June 2020

Molten salt storage tank is one of the core equipment of solar thermal power station. The design of thermal insulation layer of molten salt storage tank plays an important role in its safety and economy. It is of great commercial value and academic significance to study the heat transfer performance of the insulating layer of molten salt storage tank. In this paper, the heat transfer models of molten salt storage tank, external insulation layer and tank foundation are established. The temperature distribution and heat loss of the tank are studied. The influence of the insulation nails on the heat transfer performance of the insulation layer is analyzed. The results show that the maximum heat loss lies in insulation layer of the tank wall. Besides, the thickness of the insulating layer greatly influences the temperature drop of molten salt and the time required for steady-state heat transfer. Reasonable setting the length of insulation nail can effectively reduce the surface temperature and heat loss of the insulating layer of molten salt storage tank.
Research on the sustainable development of energy and environment in Tianjin
Authors: Wanru Wei
Published: June 2020

The rapid economic growth greatly increases the pressure of energy consumption, which also brings a series of severe environmental problems such as global warming, which directly restricts the sustainable development of economy and society.Tianjin is an important part of leading and supporting China’s economic and social development, as well as a demonstration area for ecological restoration and environmental improvement.However, Tianjin is also one of the areas with the most serious air pollution and the most acute contradiction between resources and environment and economic development.This paper studies the current development of energy and the environment in Tianjin region and correlation. The results show that there is an inevitable causal relationship between energy consumption and environmental pollution in Tianjin.The government can promote the development of environmental protection industry and the development of new energy and other measures to promote the sustainable development of the energy economic and environmental system in Tianjin.
Research on combustion properties and thermokinetic of pulverized coal: raw and pre-oxidized samples
Authors: Zhai Xiao-wei , Li Jie , Song Bobo
Published: June 2020

The combustion behaviors of raw and pre-oxidized samples for two pulverized coals (PC) were investigated using a thermogravimetric (TG) analyzer. The mass variations, characteristic temperatures and combustion characteristic parameters, et al. of PC during oxidation combustion were analyzed. The results demonstrated that the ignition temperatures (T
i) and burnout temperatures (T
b) of pre-oxidized PC were lower than those of raw PC. The total mass losses of the four samples were 91.33, 92.32, 88.85, and 90.02 mass% respectively, which were consistent with the volatile matter and fixed carbon contents (Vad+FCad). The calculated combustion characteristic parameters (the ignition index C
i, burnout index C
b, and comprehensive combustibility index S
n) of pre-oxidized samples were all greater than those of raw samples, which indicated that pre-oxidized PC was more prone to self-ignition than raw PC under the same conditions. The thermokinetic parameters of PC during pyrolysis and combustion were studied by Coats–Redfern method. The apparent activation energy E
a of these four PC samples ranged from 45.12 to 55.37 kJ/mol.
Application of Distributed Energy System in Iron and Steel Industry and Its Policy Impacts
Authors: Kim Sewon , Li Zhaoyou , An Yongjae
Published: June 2020

After years of development, the concept and connotation of Distributed Energy System (called as DES) are gradually unified. As a way of energy supply in the demand, a revolution of traditional energy system, DES is a new concept of energy conservation in the iron and steel industry, which has been vigorously advocated by the state, and warmly supported and concerned by the international environmental protection work. Iron and steel industry is a high energy consumption industry. With a large number of complex energy conversion and utilization, the production process has developed or is developing a certain amount of DES. According to the definition of the World Alliance for Decentralized Energy (WADE), this paper describes the most representative several DESs in China, and discusses its influences on the energy system of iron and steel enterprises. Finally, some policy suggestions for distributed energy system utilization in iron and steel industry are put forward for the developing countries.
Research on Slow Sand Filtration Simulation System for Salty, Phosphate and Zinc Removal
Authors: Anqi Tu , Zhiyong ZHANG , Yujie Zhu
Published: June 2020

The research focuses on slow sand filtration (SSF) simulation system for salty, phosphate and zinc removal. Salty, phosphate and zinc are all the polluted compostions of rainwater runoff. SSF system is an ideal way to purify the rainwater runoff due to its simplicity of construction and low cost. The paper also introduces the practical applications of SSF system nowadays. With the remarkable economic and human pupulation developments, our world faces the challenges of water scarcity. SSF system has great potential in filtering rainwater to provide no-potable water even potable water.
Research Progress in Application of Low Temperature Plasma Technology for Wastewater Treatment
Authors: Du Zhehua , Lin Xin
Published: June 2020

As a new advanced oxidation technology, low temperature plasma integrates strong oxidizing particles, ultraviolet light decomposition, wet oxidation and other technologies. Compared with other technologies, it has the advantages of no selectivity, no secondary pollution, and mild reaction conditions. At present, low temperature plasma technology has made some achievements, but there are some limitations in the actual scale water treatment application.The mechanism of low temperature plasma oxidation needs to be further studied. The reaction and active factors produced by low temperature plasma in the process of water treatment are very complicated, and there is no uniform conclusion on the reaction mechanism. The stability of plasma discharge depends not only on the parameters of power supply equipment and solution, but also on the design of reactor. How to design a reasonable, efficient and mass transfer reactor by combining various influencing factors is also the future research direction.The combination of low temperature plasma water treatment technology with various advanced oxidation technologies should be strengthened.
Wet air oxidation (WAO) on sludge treatment and its first industrial application in China
Authors: Hu Linlong , Guo Na , Hu Min , Yan Zibo , Gao Rao , Ma Junjie , Hu Yanlong , Peng Li
Published: June 2020

Typical commercial application of WAO on sludge treatment is first used in China, system design and debugging, and effect and cost performance is illustrated in this article. It reduces the temperature and pressure of a typical wet oxidation reaction, and the oxygen supplied is only 30- 50 % of the COD, which is specifically used to treat sludge. After the treatment, the sludge moisture content from 80 % to 45-48 %, and become harmless and stabilized, so it can be used as soil for gardens directly or mixed with other materials. As a supplementary carbon source for the nitrogen removal and phosphorus removal process, the separation solution is rich in organic acids and returned to the sewage plant after the heavy metal removal process. The operating cost of the entire process is 180-200 yuan per ton (80 % moisture content), mainly for electricity consumption.
The Response of Soil Bacterial Communities to Land-use Types in a Subtropical Mountainous Region, Southwestern China
Authors: Zhang Wen , Ding Leilei , Wang Puchang , Zhang Yu , Zhang Yujun
Published: June 2020

In this study, the characteristics of soil bacterial composition and diversity were investigated under four land-use types (afforestation land, FL; abandoned land, SL; native grassland, GL; cultivated land, CL) to explore correlations between land-use types and the bacterial communites in soil in a subtropical mountainous region of southwestern China. The results showed that the dominant taxonomic genera were Actinobacteria and Proteobacteria. Land-use type influenced the bacterial richness and diversity, and ranked as follows: FL>CL>SL>GL. Marked differences in the distribution of taxon assemblages among the different land-use types in soil were found. The relative abundances of Acidobacteria in SL, Proteobacteria in FL, and Chloroflexi in GL presented as being higher than in other land-use types. Among all the physicochemical properties, significant pearson linear correlations between soil bacterial taxonomic genera (Flavobacterium, Sphingomonas, Blastocatella, Zymomonas, Pedomicrobium, Reyranella, Rhodanomonas, Flavisolibacter, Candidatus and Telmatobacter ) and physicochemical properties (pH, TP and LAP) were observed. These findings suggested that land-use type is a major factor that affects the bacterial composition and diversity, and that changes in soil bacterial composition and diversity are associated with shifts in physicochemical properties.
Planning of Humanistic Ecological Landscape in Urban Waterfront Area
Authors: Ying Song
Published: June 2020

In order to relieve the mental pressure in urban life, the ecological landscape park in waterfront area has become the first choice. However, most urban rivers are currently polluted, and worsen the quality of waterfront greening. The paper puts forward the ecological landscape planning of urban waterfront area. The paper expounds the meaning and characteristics of urban waterfront landscape based on Landscape Ecology, including ideas and principles of waterfront ecological landscape design. The waterfront area could be built into humanistic ecological garden landscape and designed rationally plants. The results show that the planning of ecological landscape in waterfront area is consistent with the real landscape, and its idea is expected to provide reference to the planning of waterfront ecological landscape for the city’s future.
Hierarchical porous g-C3N4/Bi5O7I photocatalyst for high gaseous mercury removal
Authors: Zhang Hui , Rao Dao , Wu Jiang , Guan Yu
Published: June 2020

The g-C3N4/Bi5O7I photocatalyst with a hierarchical porous nanostructure (CB-HPN) was successfully synthesized via one-step calcination method. The materials were characterized by XRD, SEM, XPS and PL to investigate the properties of porous nanostructure. The mercury removal efficiency of g-C3N4/Bi5O7I reached up to 80.3%, which was much higher than that of Bi5O7I. It was found that the hierarchical porous nanostructure could modulate the interface charge transfer tracks efficiently and increase the ratio of active factors, thus accelerating photocatalytic oxidation of gaseous mercury (Hg0). Based on the characterization and experiment analysis, a reasonable charge transfer and reaction mechanism for Hg0 oxidation is proposed.
Numerical simulation and field test of double-storey sedimentation tank in potable water treatment
Authors: Zhang Shuo , Wang Ruhua , Xu Jiajiong
Published: June 2020

A method combining CFD and field test is applied to study the influence of geometric parameters of double-storey sedimentation tank on hydraulic characteristics. The results show that the flow field of the sedimentation tank is close to the clear water sedimentation tank and the effect of particles on water flow is relatively small. Longer width, longer length, upper and lower stories with comparable depths, and longer sumps are beneficial for reducing the particle concentration at the outlet. The velocity of the bottom is small and the velocity of the upper storey is large. The floc particles in the front section are larger and the sedimentation speed is larger, and the flocs in the rear section are opposite.
Modelling for Water Resources Protection
Authors: Wuhang Zhang
Published: June 2020

This paper emphasizes the importance of water resource modelling. Due to the transferability and tradability of water resources, all water users will pursue a cost-effective strategy, thus forming the behavior of rational water use and saving water in subconscious. To increase the reliability of water supply and to provide a hedge against future water price volatilities, financial derivatives are incorporated in the water market and analytical solutions for pricing the European option are provided. This research provides a solution for water management problem if water resource is fully marketized, and the solution is applicable for other resources management such as gas, oil, electricity.
Sludge Conditioning Soft Measuement Based on GA-RVM
Authors: Long Luo
Published: June 2020

To solve the highly non-linear problem of sludge conditioning, the Relevance Vector Machine (RVM), was used to softly measure the sludge conditioning process.The parameters of the kernel function seriously affect the comprehensive performance of RVM. Using genetic algorithm (GA)to obtain the optimal kernel function parameters is an effective solution. The simulation results indicated that the filtering performance was basically consistent with the actual value of dosage and the model prediction result, and the target value could be well predicted. It showed that the model had a certain value for industrial application.
Study on Present Situation of Active Stimulation of Recycled Fine Powder
Authors: Li Qinyu , Xu Qian , Ai Wenbo
Published: June 2020

The text describes the current research status of activation technology of recycled fine powder. The influences of all excitation methods on recycled fine powder are introduced, Based on the analysis of the advantages and disadvantages of the existing excitation methods, the paper puts forward suggestions for energy-saving improvement of mechanical grinding, searching for new chemical activators, controlling temperature and humidity and so on, so as to further promote the recycling of recycled fine powder in China.
Effects of Lycopene on Oxidative Damage and Mitochondrial Function in the Skeletal Muscle of Mice After Strenuous Exercise
Authors: Weiwei Zhang , Ling Yu
Published: June 2020

The main purpose of this study is to investigate the effects of lycopene on oxidative damage and mitochondrial function in the skeletal muscle of mice after strenuous exercise. After the establishment of animal models of exercise-induced fatigue, the mice were randomly divided into four groups: quiet control group, exercise fatigue control group, Low-dose lycopene (20mg/kg) + exercise fatigue group, and high dose lycopene (60mg/kg) + exercise fatigue group. After four weeks, the mice were sacrificed and the levels of superoxide dismutase (SOD), glutathione peroxidase (GPx), malondialdehyde (MDA), free calcium-ion (Ca2+), citrate synthase (CS), values of state 3 respiration (S3) and state 4 respiration (S4) were measured. The results show that lycopene could increase the levels of SOD and GPx in muscle, as well as the levels of free calcium-ion, CS, and values of S4 and respiratory control ratio (RCR) in mitochondria, and decrease the MDA levels in muscle. Lycopene has protective effects against strenuous exercise-induced muscle damage and improves mitochondrial function.