bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on optimal allocation for island microgrid based on state of charge
Authors: Li Guanglei , Wang Dehua , Xu Zheng , Wang Yuejiao , Jin Fei 
Published: May 2020

Abstract
Making use of the characteristics of complementation of renewable energy, a new optimal control strategy for microgrid is proposed to choose the appropriate opening capacity of distributed energy such as wind power, photostatic, gas turbine and energy storage system. According to this strategy, this paper realizes analysis and evaluation of capacity optimization through establishing mathematical model. Then the optimal operation plan is solved by means of multi-objective optimization algorithm. Finally, a numerical example shows the applicability of the strategy. The optimal ratio of power supply is realized to guide engineering construction.
Research on Multi-Transactional Concurrent Electricity Transaction Operation Simulation Technology
Authors: Feng Heng , Wang Gaoqin , Huang Wenyuan 
Published: May 2020

Abstract
The spot market is an important part of the electricity market system. It plays a fundamental supporting role in the orderly operation of the open, competitive electricity market, and is also the key to coordinating market transaction and power system operation. In China, the differences of power grid structure, power supply structure, and economic level in various provinces are large. How to choose the local spot market model and market rule can’t be answered through manual experience. At the same time, the electricity market operation is a long-term dynamic evolution process. It is affected by various factors such as power grid structure, supply and demand situation, and external environment. The bidding behaviour of market members is constantly adjusted with the market participation time. It is difficult to predict the market operating effect only through theoretical analysis. Therefore, it is necessary to study the multi-transaction concurrent operation energy trading simulation software that is suitable for the above-mentioned problems in order to solve the above problems, and provide technical support for simulation verification and comparison analysis for the relevant models and rules design of future sales participation in the electricity market. Before the official operation, the experimental simulation was carried out for the continuous operation effect of the market rules.
Correlation analysis of CO2 emission in logistics and other industries of China
Authors: Xu Aixia , Yu Ning 
Published: May 2020

Abstract
The paper calculates the total volume of CO2 emission of the logistics industry in China, the consumption factor and distribution factor based on the statistical yearbook and the input-output table, and analyzes the correlation between CO2 emission in the logistics industry and other industries of China. The result suggests that its total CO2 emission volume shows a linear upward trend, but its average growth rate and emission intensity are going down year by year. As the CO2 emission from the logistics industry is closely forward-correlated with that of the manufacturing, the construction industry and the logistics industry, it has a strong driving impact on the CO2 emission of the industries concerned. Meanwhile, the backward-correlation with the manufacturing and the electric power, gas and water production and supply industries, and the logistics industry makes the logistics industry the greatest consumer of CO2 emission from these industries. The development of the low CO2 emission-oriented logistics industry requires a reduction of indirect CO2 emission in the forward-correlated industries as well as the backward-correlated industries.
Experimental Study on Flow Resistance Characteristic of Corrugated Low Finned Tubes
Authors: Ren Bin , Pu Zhe , Tang Xiaoying , Lu Hongliang , Du Yannan , He Aini 
Published: May 2020

Abstract
The heat transfer enhancement techniques have been developed to the third generation. The most popular and successful enhancement techniques are the artificial roughness surface and helically corrugated tube. Corrugated low finned tube is a kind of helically corrugated tube with trapezoidal shape groove. In this paper, the flow resistance characteristic of corrugated low finned tubes was studied experimentally. The results showed that all the enhanced tubes had a larger friction factor than the smooth tube due to the turbulence augmentation and rotational flow produced by helical rib. Moreover, the friction factor ratios slightly increased with the raise of Reynolds number and rib height presents more significant effect on flow resistance. Finally, all the experimental data were fitted as the function of Reynolds number, Prandtl number, tube pitch and rib height. The research results can provide a foundation for designing heat exchangers using this enhancement technique.
Discussion on dehydration technology of coal mine low-concentration gas reciprocating internal combustion engine
Authors: Wang Xiaopeng 
Published: May 2020

Abstract
Low concentration gas reciprocating internal combustion engine power generation in coal mine is one of the main ways of gas utilization. This paper aims at the technical problem of low concentration gas power generation efficiency caused by large amount of atomized liquid water carried by gas in low concentration gas pipeline. Based on the analysis of the source of low concentration gas liquid water, this paper discusses in detail research progress of dehydration technology for low concentration gas reciprocating internal combustion engine power generation, and key discusses the mechanical separation method, electric refrigeration method, electric refrigeration combined with cold air circulation method and flue gas residual heat variable temperature method for gas dehydration of low concentration gas power generation.
Study of fabrication for antibacterial water filter by loading silver nanoparticles on activated carbon
Authors: Hung Shuo-Ting , Chow Yong-Neng , Zheng Huiting , Li Zhian 
Published: May 2020

Abstract
The aim of this study was to evaluate the use of nitric acid treatment of activatd carbon, and observe whether it can increase the amount of silver adsorption. We used vacuum condition to investigate if we could synthesize higher loading silver nanoparticles. Furthermore, we explored a zero-waste manufacture process and tested its antibacterial activity.
Research on Tangible Indexes of Petroleum Engineering Technology
Authors: Sun Jian , Liu Ke 
Published: May 2020

Abstract
The active effort on the tangibility of petroleum engineering technology is of important significance to the improvement of technological impact and commercial application of oil and gas technology. The evaluation index system for tangibilization of petroleum engineering technology is determined on the basis of technological tangibilization practice of domestic and foreign oil companies. The evaluation system mainly includes four dimensions: market demand factor, technological maturity factor, commercial application factor and business development demand factor. The different dimensions have different variables. The factor analysis method is adopted to calculate the weight of each variable index. Based on examination of credibility and validity, this indexes system is shown to have a good questionnaire structure, facilitating acquisition of respondents’ information and guiding petroleum engineering technological service companies to evaluate whether their own technology needs to be tangibilized.
The Influence of Energy System Model on Renewable Energy Policy Governance
Authors: Cao Haijun , An Yongjae , Kwon Cholu 
Published: May 2020

Abstract
Renewable energy is an effective way to realize the harmonious coexistence of human and environment as well as for sustainable economic development. A basic mission of Energy System Model is to help decision makers in solidly developing, implementing and assessing the impact of energy and climate mitigation policies. This paper focuses on the impact of energy system model on renewable energy policy and how to pay attention to it. That is, what is the influence of DPRK’s greenhouse gas (GHG) emission mitigation model on DPRK’s renewable energy policy governance? This paper describes the renewable energy policy established by GHGs mitigation model in DPRK, and provides a comparative analysis of DPRK’s renewable energy policy framework by 2030. We provide some policy recommendations for medium term renewable energy development in DPRK.
Determination of Effective Components of Scutellaria indica from Different Habitats
Authors: Yu Xiao-Mei , Dan Cao 
Published: May 2020

Abstract
A HPLC method for the determination of three effective components in Scutellaria indica from different habitats was established. Analysis was performed on Waters Spherisorb ODS2 (4.6 mm × 250 mm, 5 μ m) with gradient mobile phase of 0.5% glacial acetic acid aqueous solution-acetonitrile. The flow rate was 1 m L/min and the detection wavelength was set at 275 nm. The results showed that the chromatographic elution curves with good resolution and reproducibility were obtained. By comparing with the reference materials, three effective components were determined, namely, scutellarin, scutellarin and apigenin. The method is sensitive, accurate and repeatable, and can be used for the determination of three components in Scutellaria indica. The results also showed that there were significant differences in the chemical composition of Scutellaria indica from different areas. The quality differences of Scutellaria indica from different areas should be considered in the selection of Scutellaria indica.
New extraction technology and characterization of sodium alginate
Authors: Guo Yanqiu , Zhang Shuping 
Published: May 2020

Abstract
In this paper, the experiment was based on the principle of producing sodium carbonate by the combined alkali method, simulating seawater to absorb carbon dioxide in the air, and producing an alkaline extract solution. The effect of the extract on the extraction rate of sodium alginate was studied and then characterized by Fourier transform infrared spectroscopy and TGA. The viscosity and average molecular weight of sodium alginate were measured by viscometer.
Application of advanced oxidation process combining anaerobic granular sludge on refractory industrial wastewater treatment
Authors: Wang Kun , Wang Zhongquan , Qin Shulin 
Published: May 2020

Abstract
An AOPs of Fe/C micro-electrolysis (FCME) and Fenton oxidation (FO) was combined with anaerobic granular sludge (AGS) to treat recalcitrant pharmaceutical wastewater in this study. The AOPs showed significant COD reduction during both FCME and FO. For influent COD=9000∼11000mg/L, the pretreatment effluent COD could reach below 5500mg/L under 0.6% H2O2 adding condition. And the B/C of pharmaceutical wastewater was improved from 0.11 to 0.37. The subsequent AGS treatment in EGSB got a COD removal rate of 87.1%. The extracellular polymeric substance (EPS) and mean diameter detection demonstrated high stability of EGSB. AOPs with AGS is supposed to be a better option for recalcitrant wastewater treatment process.
The effect of different initiator dosages on the performance of sodium salt of MAA/St/SSS copolymer dispersant
Authors: Zhang Yanyan , Chang Yunping , Zhang Qiang 
Published: May 2020

Abstract
500 g/L atrazine aqueous suspension concentrates (SC) were prepared by using sodium salt of methacrylic acid/styrene/sodium p-styrene sulfonate copolymer (SMSS) synthesized with different initiator dosages as dispersants, and the performances of atrazine SC were evaluated. It is found that initiator dosages have remarkable effect on the performance of SMSS. SMSS has higher performance when the initiator dosage is 4.8 wt. %, and the suspensibility of atrazine SC could reach 98.36%, the syneresis rate is only about 0.5% and the particle size is the smallest.
The pollution characteristics and source analysis of water-soluble ions in indoor PM2.5 during the Spring Festival in Jingyue Suburb of Changchun City
Authors: Li Bai , Li Chunhui , He Zijian 
Published: May 2020

Abstract
The characteristics of water-soluble ions in indoor PM2.5 during the Spring Festival in Changchun City were analyzed by ion chromatography. The results showed that the main water-soluble ionic components in the indoor and non-combustion periods were SO4
2- and Ca2+, and the concentration of Na+, K+, Mg2+, F-, Cl- and NO3
- increased in the fireworks and firecrackers, among which Cl- and NO3
-. The concentration increased significantly compared with the non-combustion period, and peaked with PM2.5 concentration in the first month of the first month and the first month of the first month; the correlation between NH4
+ and SO4
2- during the discharge and non-combustion periods was greater than the correlation between NH4
+ and NO3
-, NH4
+ Sulfate is preferentially combined with SO4
2-, and secondary ions are mainly in the form of (NH4)2SO4 and NH4NO3. Cluster analysis and correlation analysis indicate that the sources of water-soluble ions in indoor PM2.5 during the Spring Festival can be classified into four categories. Biomass combustion source, automobile exhaust gas source, coal-fired emission source and soil dust, among which the main sources of Na+, K+, Mg2+, Cl-, SO4
2- during the discharge period are the fireworks and firecrackers.
A study on Kinetics of Mn2O3 catalytic oxidation about Supercritical (near) critical water of POPs
Authors: Liu Na-Na , Zhong Wang 
Published: May 2020

Abstract
Supercritical(near) critical water oxidation is a green and efficient method developed in recent years for the treatment of organic waste, The kinetics of Mn2O3 catalytic degradation of persistent organic pollutants (POPs) in Supercritical(near) critical water was studied. The reaction order, apparent activation energy and the feedback of three factors on catalytic degradation were determined. The experiment shows that under the conditions of temperature 280∼360°C, pressure 6.9∼ 20.3mpa and reaction time 5∼30min, Mn2O3 and hydrogen peroxide are used as the oxygen source without the catalyst. 4,4 ‘-dibromobiphenyl has a reaction order of 1.71, Apparent activation energy 46.56 kJ/mol; Mn2O3 catalyst was used, the reaction order of 4,4 ‘-dibromobiphenyl was 1.79, and the apparent activation energy was 37.89 kJ/mol. Therefore, Mn2O3 as a catalyst can significantly degrade the activation energy of POPs in near-critical water.
Hydrodynamic characteristics of asymmetric semi-submersible lifting platform
Authors: Yao Zhenqiu , Liu Chuanyi , Ling Hongjie 
Published: May 2020

Abstract
The research object of this article is an asymmetric semi-submersible lifting platform, which is different from the traditional semi-submersible platform. It has an asymmetric lower hull structure. A heavy crane is installed on the right side of the platform body which is larger than the other side. Based on the three-dimensional potential flow theory, the hydrodynamic performance of the asymmetric semi-submersible lifting platform under operating conditions was studied by using the numerical calculation method of the hydrodynamic calculation software AQWA by adding viscous damping coefficients, and multiple wave angles. The RAO response amplitude operator, first- and second-order wave forces, additional mass and other hydrodynamic parameters are used to analyze the characteristics of various hydrodynamic parameters of asymmetric semi-submersible lifting platforms.
The Impacts of Reservoirs on Runoff in the Upper Yellow River, China
Authors: Guo Yan , Hou Suzhen , Wang Ping , Zhao Jun 
Published: May 2020

Abstract
River runoff is an important link in the water cycle that can be adversely affected by the construction of reservoirs. Based on the runoff data from 1950 to 2009 at eight stations in the upper Yellow River, this study investigated on the impacts of the combined operation of Longyangxia Reservoir and Liujiaxia Reservoir on river runoff. The measured series of runoff data for the period after the commencement of combined operation of two reservoirs were restored by adjusting for water balance. The intra-annual characteristics of observed and restored runoff at Lanzhou station and Xiaheyan station were analyzed using Mann-Kendall test and wavelet analysis. There was a significantly downward trend in both runoff series, with abrupt changes in 1986 in the observed data and in 1989 in the restored data. Periodic oscillations in the observed and restored runoff series occurred at temporal scales of 3–5-year, 6–9-year, 14–19-year, and 22–27-year. The observed runoff series at Lanzhou station and Xiaheyan station had periodicities of 25-year, 16-year, 8-year, and 4-year. The restored runoff series at Lanzhou station had periodicities of 23-year, 8-year, and 4-year, and at Xiaheyan station had periodicities of 24-year, 4-year, and 8-year. The results show that the combined operation of Longyangxia Reservoir and Liujiaxia Reservoir contributed to the decreasing trend of river runoff, and leaded to runoff abrupt changes and alterations in the periodic variation.
A Model for Evaluating Climate Change on Fragile States
Authors: Wenya Gao , Yang Bian Jing , Chu Zhao 
Published: May 2020

Abstract
In our paper, we find data of 178 states and then establish a series of models to identify and predict the influences of climate change on states’ fragility. First, we select representative indexes. Then we employ K-means Clustering Analysis method to classify the state’s fragility. Next we conducted collinearity test and parallelism test. Lastly, we made improvements to the model to enhance the impact of climate change on vulnerability.
Design of Household Items Delivery Robot
Authors: Jiao Yuping , Wang Yixian , Shen Musheng , Zou Tian , Tian Chunlai 
Published: May 2020

Abstract
The household items delivery robot is a multi-functional robot mainly facing the delivery and handling of household goods. It can handle a variety of items while delivering them, such as cup cleaning and fruit cutting. It achieves the grabbing and delivery of various items through multi-degree of freedom robotic arms and claw-changing devices. Its versatile internal structure enables clean cups, cut fruit and transport items. The multi-functional robot as mainly household goods delivery service will make people living feeling standards having a greater improvement and bring great convenience to home living.
Strain transfer analysis of substrate fiber Bragg grating sensor in engineering structure health monitoring
Authors: Yue Chuanyun 
Published: May 2020

Abstract
Fiber Bragg grating sensors are usually buried in the matrix or pasted on the surface of the matrix in practical engineering applications. Due to the different physical and mechanical properties of the fiber, the protective layer, the adhesive layer and the matrix material, the measured strain of fiber Bragg grating sensors is not equal to the actual strain of the matrix structure, so it is necessary to correct the measured strain. Based on substrate optical fiber grating sensor as the research object, established the “matrix structure, colloid, substrate, colloid, and fiber Bragg grating sensor of strain transfer model, deduce the substrate optical fiber grating sensor measurement of strain and matrix structure actual strain between the strain transfer calculation formula, and through the finite element analysis and experiment validation of theoretical derivation. Finite element analysis and experiments verify the correctness of theoretical derivation, and the strain transfer formula obtained can be applied to practical engineering.
Analysis on Damage Detection of Gangue Silo and Structural Reinforcement Design
Authors: Zhang Chunmei 
Published: May 2020

Abstract
According to the damage of gangue bunker structure in FengXi coal industry production system in the process of using, through the corresponding instrument detection and data analysis, the reasonable repair and reinforcement design scheme is put forward for the gangue bunker cylinder wall with different degrees of damage such as concrete loosening and falling off, steel bar exposure, corrosion and so on. The research shows that the treatment scheme of adding a whole layer of warehouse wall and connecting it with the foundation and the upper and lower ring beam of the warehouse body can guarantee the strength and rigidity of the warehouse body to the greatest extent and meet the requirements of normal use and safe production of the gangue warehouse. It provides reference for the use and monitoring of other silo structures in coal industry production system.
Research on the Development Strategy of Engineering Cost Consulting Industry under the “Internet +” Background
Authors: Liao Liping 
Published: May 2020

AbstractWith the rapid development of big data, artificial intelligence, cloud computing, and computer network communication technology in the new era, it will become possible to build a unified national engineering cost consulting information platform. Under the “Internet +” background, the development opportunities and challenges of the engineering cost consulting industry coexist. The article introduces the development opportunities of the industry and analyzes the problems and challenges in the development process. It proposes countermeasures in terms of improving services and improving the industry’s integrity system; improving organization and strengthening the standardization of the industry; cultivating talents to form the core competitiveness of enterprises; strengthening management and building an enterprise engineering cost case library; using new technologies, changing working models, and improving service levels. These suggestions is to promote sustainable development of the industry.
Design of indoor model test system for Post-stiffened core lengthened concrete pile
Authors: Li Yue-Ming , Han Shang-Yu , Li Kai-Ren 
Published: May 2020

Abstract
The post-stiffened core lengthened concrete pile is a kind of composite foundation pile formed after the existing concrete core is inserted into the stiffened core lengthened body through the hole. Based on the pile-forming technology and testing needs of the pile structure, a set of indoor model test system is studied and determined. The system is mainly composed of model groove, loading system and measuring system, and the setting of post-stiffening core section can be realized by controlling the filling time of concrete in the existing concrete core position. The displacement test body is set up on the top of the model pile and the soil around the pile, the stress sensor is set in the pile body and the core body, and the earth pressure sensor is set in the soil around the pile. The test system can form the bearing capacity of pile body (including existing concrete pile and stiffening core section) and soil around the pile from multiple dimensions, and realize the test of pile response under different load combinations by controlling the loading process.