bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical Analysis on Post-enhancing Method Used in Soft Soil with Concrete Mini-Pile
Authors: Liu Haitao 
Published: November 2019

Abstract
Post-enhancing Method with concrete mini-pile is a new way to strengthen sub grade. The displacement and pore pressure of the soft soil during construction are studied in this paper through numerical simulation. The figures of development of subgrade deformation and sub water pore pressure show that there is a comprehensive function in post-strengthen foundation with small concrete pile.
Analysis of Implicit Carbon Emissions in Sino-EU Carbonintensive Products Trade Based on Input-Output Model
Authors: Liu Xukai 
Published: November 2019

Abstract
In recent years, with the continuous deepening of China-EU trade partnership, EU countries have imported and consumed a large number of carbon-intensive products from China. In order to analyze the changes in China’s carbon dioxide emissions caused by China’s export of a large number of carbon-intensive products to the EU, this paper estimates the implied carbon emissions generated by the trade of carbon-intensive products between China and the EU by establishing the input-output models of China and the EU respectively. The results show that the future carbon emissions of China-EU carbon-intensive products will grow at a slower rate, which is due to the continued decline in China’s carbon intensity.
Review of research on anaerobic fermentation of food waste
Authors: Liu Qing , Lou Feng , Geng Jianhua , Li Yan , Gao Feng 
Published: November 2019

Abstract
Food waste (FW) is one of the most important components of municipal solid waste, including household food waste, food processing waste, canteens and restaurant waste. The accumulation of FW has gradually become a global problem. The FW has the characteristics of high organic matter content, high moisture content, easy spoilage and deterioration, and is easy to produce toxins and malodorous gases during transportation and treatment, thereby polluting the environment. Anaerobic digestion can effectively recover energy from organic waste, and is a common method of handling FW. Anaerobic fermentation techniques, including traditional anaerobic digestion and two-phase anaerobic digestion, are common methods for handling FW. This paper describes the current status of these two methods in FW treatment.
Case analysis of gas pipeline network reform project-The gas system of Changling county
Authors: Zhang Ximing , Zhao LinJie , Yang JinChao 
Published: November 2019

Abstract
With the call of energy saving and emission reduction, natural gas, as a kind of clean energy with abundant green and environmental reserves, has gradually become the main source of domestic fuel for Chinese residents. The urban gas pipeline network system has also become a part of the urban basic service facilities, providing energy for the city. The safe operation of the gas pipeline network is closely related to the daily production and life of the people. Because of the economic and other reasons, there are many old gas pipelines in the central city of Changling County. In addition, there is no effective renewal for a long time. These pipelines are running ill, the overall gas distribution is seriously reduced, and there is a leakage phenomenon. There are great potential safety hazards, which also causes a great waste of energy. Therefore, in this context, the government of Changling County takes active measures to solve the problem of the old gas pipeline network in the central city, and promotes the task of gas pipeline network transformation.
Assessment of Heavy Metal Pollution in Soil Surrounding a Company in Jiaxing, China
Authors: Liu Ting-ting , Yan Ying-ping 
Published: November 2019

Abstract
The content of eight elements of Sb, Cu, Co, Pb, As, Ni, Cd and Cr in soil samples in the northwest direction at different horizontal distance and depth under the prevailing wind and southeast of China was determined by the 500m soil in the vicinity of an automobile parts company in Jiaxing. The soil accumulation index and potential ecological hazard index were used to assess the risk of heavy metal pollution. The results show that: there are four kinds of heavy metals in the surface soil which are higher than the national soil background value, in which Sb and Cd heavy metal elements generally exceed the standard value, but there is no obvious law of the concentration distribution in the plane, and human activities have a strong disturbance to the heavy metal in the region, but the wind direction has little The soil Cd around the auto parts company have reached a very polluted level, Sb reaches medium-strong pollution, Ni, As, Pb, Co, Cu, Cr Five kinds of heavy metals are mild-medium, and the pollution degree of each metal does not decrease with the increase of soil depth, and there is no regularity in longitudinal distribution. As, Although the carcinogenic risk of two kinds of heavy metals in Ni is acceptable, there are potential carcinogenic risks, which should be controlled and given high attention and prevention.
Effect of Bagging on Fruit Quality of Three Pummelo (Citrus grandis Osbeck) Cultivars
Authors: Wang Yan , Fu Xiaoke , He Wen , Chen Qing , Ma Jianying , Wang Xiaorong 
Published: November 2019

Abstract
In this study, the effect of bagging on fruit quality of three pummelo (Citrus grandis Osbeck) cultivars was evaluated in order to provide basis for high-quality and high-efficient cultivation of pummelo cultivars. Seven bagging times was set at 35, 50, 65, 80, 95, 110, and 125 days after flowering (DAF). Different bagging treatments all effectively improved the external fruit quality, such as beautiful peel color and smooth oil vacuole. The weight per fruit, longitudinal and transverse diameter revealed decrease trends along with the delay of bagging times. In addition, bagging treatments somewhat decreased the content of internal quality, including total soluble solid, vitamin C and sugar, being significantly lower than that in control check. Taking the external and internal fruit quality into consideration, we determined the appropriate bagging times for three cultivars. The best bagging time was at 35, 80, and 65 days after flowering for ‘Sanhongmiyou’, ‘Hongroumiyou’ and ‘Huangjinmiyou’, respectively. It will provide effective basis for bagging treatments in the pummelo producing area.
Research Progress of Membrane Bioreactor in Organic Industrial Wastewater Treatment
Authors: Zhang Yiming , Chen Yuchao , Yuan Yuhang , Dong Kun , Li Xiangmin , Li Haixiang 
Published: November 2019

Abstract
The paper expounds the membrane bioreactor (MBR) working principle, process type and technical characteristics, and reviews the application of membrane bioreactor in the treatment of petrochemical wastewater, pharmaceutical wastewater, printing wastewater in recent years, and summarizes and analyzes the problems in the application of the MBR and the solutions. Finally, the future research on the membrane bioreactor treatment of organic industrial wastewater is prospected.
Effect of Different Green Space Types on PM10 Concentration in Air - Taking the Campus of Hunan University of Science and Technology as an Example
Authors: liu Bingyou , Wang Jieming , Wang Chenyang , Li Ruixue , Peng Wengang 
Published: November 2019

Abstract
The daily andmonthly weather changes of PM10 in different types of green space on campus were detected, and the effects of different types of green space on PM10 concentration were compared and analyzed.The results showed that the effects of different green space types of PM10 were significant in one day, but not in one year. At the same time, season has a significant effect on the air PM 10 concentration. Green space types have a significant effect on PM 10 concentration on one year.
Study on Smoke Temperature Variation and Heat Field of Soundable CYO
Authors: Zhan Jianbo , Wang Hao , Yu Zhenhua , Zheng Han , Li Geng , Zhang Ying , Li Liwei , Wang Tao , Xie Jiao , Yu Tingting , Yue Baoshan , Wang Xu , Yu Jiang 
Published: November 2019

Abstract
In order to solve the shortcomings of cigarette auditory stimulation, this paper focuses on the design of soundable connector components, and studies the influence of the connector on smoke temperature. The smoke temperature change of the splicer and filter are simulated by using ISO smoking model and ANSYS simulation software. The simulation results show that the temperature of CO and nicotine decreases sharply after going through the connector, and the temperature drops to room temperature when it arrives at the filter rod. The connector has the effect of reducing the temperature of smoke.
Comparison and Analysis of Solar Position from Three Astronomical Planetary Ephemeris
Authors: Ma Lihua , Wang Xiaolan , Hu Chao , Qiao Qiyuan 
Published: November 2019

Abstract
Some astronomical phenomena including eclipse, transit, planetary conjunction and opposition are closely related to position of the Sun. Solar position directly determines the time when these phenomena occur. The premise of calculating these phenomena is to calculate the solar position. With astronomical planetary ephemeris, the solar position at any one time can be obtained. In this present paper, three astronomical ephemeris is used to calculate the solar position, with emphasis on position difference of the Sun. The results show remarkable inconsistencies existing in three ephemeris. The maximum difference of right ascension and declination for the Sun reaches 45 arcseconds and 41 arcseconds, respectively.
Design of Desulfurization Wastewater Treatment Control System
Authors: Yin Qi , Zhu Yunlong , Shreka Majed 
Published: November 2019

Abstract
It is very important to treat the desulphurization wastewater caused by the flue gas desulphurization process of the marine diesel engine. In this paper, the desulfurization wastewater discharged from the sodium-alkali seawater desulfurization system was studied and a desulfurization wastewater treatment control system based on Siemens PLC was designed. The monitoring system consisted of the machine side touch screen and the remote host computer. It was used to monitor the operation of the control system in real time, store system data, and display reports, curves, alarms, and other information. Furthermore, the automation of aeration, dosing, flotation, scraping, water quality monitoring, and discharge in the process of desulfurization wastewater treatment was realized by using this system.
A Cost-effective Method to Fabricate a Super-non-wetting Self-cleaning Transparent Emulsion Paint Coating
Authors: Li Yanwen , Chen Wenjie , Qu Jian , Qin Jie , Zhang Tao , Zhang Weidong 
Published: November 2019

Abstract
The procedure to fabricate an industrially-producible, practically-applicable and easily-reconstructible transparent paint coating with luminescence is introduced step- -by-step in this paper. Without chemical modification, an ultrahydrophobic transparent paint coating with luminescence can be readily created using cost-effective commercially available materials. Grinding the ultrahydrophobic transparent paint coating surfaces using appropriate emery papers can generate appropriate surface roughness and thereby endows the coating surfaces with super-non-wettability and self-cleaning property. The applications of the coating to the external walls of buildings can provide the walls with self-cleaning property, decorate the walls and save outdoor illumination power during the night.
Experimental Research on The Coupling Effect of Hole Plate Size and Initial Pressure on The Pressure of Methane-Air Explosion
Authors: Chen Fan-dong , Ma Yun-long , Yang Guang-yu , Liu Yi-ping 
Published: November 2019

Abstract
In order to study the effects of different orifice sizes and initial pressures on the explosion process of methane-air mixture, the explosion tests of methane-air mixture were carried out under different orifice sizes (16mm-160mm) and initial pressures (0kPa-50kPa) using PTB pipeline experimental device. The experimental results show that with the decrease of orifice size and the increase of initial pressure, the maximum explosion pressure of methane-air increases. The maximum explosion pressure is 5 times of the minimum explosion pressure in the limit state. The coupling effect of orifice size and initial pressure on explosion pressure is greater than effect of single factor. Finally, the influence surface is drawn to describe the relationship between the size of orifice plate and the initial pressure and the maximum explosion pressure of methane-air mixture.
Study on Extracting Avocado Oil from Avocado Pulp by Aqueous Extraction
Authors: Li Yahui , Liu Yijun , Deng Dongyan , Liang Jiemin , Chen Weituan , Chen Xinyi , Li Jihua 
Published: November 2019

Abstract
The optimum process for extracting avocado oil from avocado pulp was studied by using water method. The effects of material-liquid ratio, temperature, and time and pH value on oil extraction rate and oil recovery rate were studied. The optimum extraction conditions of avocado oil were determined by orthogonal test, and the physicochemical properties and fatty acid composition were analysed. The results showed: material-liquid ratio of 1:3 g/mL, extraction temperature of 75 °C, extraction time of 150 min, pH of 8 could be obtained on the optimal extraction conditions, and the oil extraction rate and the oil recovery rate of avocado oil were 78.95%, 37.21%, respectively. The acid value of avocado oil is 0.86 mg / g, the iodine value is 154.41 g / 100g, the saponification value is 198.0 g / 100g, water and volatile matter is 0.13%. The main fatty acid composition of avocado oils were oleic acid (71.93%), palmitic acid (13.33%), linoleic acid (8.51%), palm oil Acid (5.28%), total unsaturated fatty acid content 85.72%.
Research on durability and microscopic mechanisms of the portland slag cement stabilized soil under carbonation condition
Authors: Sun Fayin , Wang Jiye , Xu Hongfei , Zhu Debin 
Published: November 2019

Abstract
In this study, physical-mechanical properties and microscopic characteristics of the slag Portland cement stabilized soil and the normal Portland cement stabilized soil after carbonization were investigated and compared through carbonization depth tests, unconfined compression tests, XRD and SEM tests. Results showed that carbonation depth of the slag Portland cement stabilized soil was lower than that of the normal Portland cement stabilized soil on each carbonization stage. Results of XRD and SEM tests showed that the normal Portland cement stabilized soil were decomposed into Cal after carbonization, which lead to loosened structure and strength retrogression.
Effects of abscisic acid on soluble sugar content of Perilla frutescens seedlings under cadmium stress
Authors: Fan Zhonghan , Huang Zhi , Lin Lijin , Hu Rongping 
Published: November 2019

Abstract
The experiment aimed to study the effects of abscisic acid on soluble sugar content of Perilla frutescens seedlings under cadmium stress. The leaves of P. frutescens were foliage sprayed with different concentrations (0, 1, 5, 10, 20 μmol·L−1) of ABA under cadmium stress (10 mgkg−1). The results showed that the soluble sugar content in root, stem and shoot increased with the ABA concentration increasing at first, and then decreased. The soluble sugar content in leaf decreased with the ABA concentration increasing. The soluble sugar content in root and stem peaked when the ABA concentration was 5 pmol-L−1, which increased by 8.11% and 19.87% compared to the ABA concentration was 0 pmol-L−1, respectively. And the soluble sugar content in leaf peaked when the ABA concentration was 1 pmol-L−1, which increased by 1.04%. In conclusion, appropriate concentration of ABA could increase the soluble sugar content of P. frutescens under cadmium stress, and alleviated the stress of cadmium on P. frutescens seedlings to some extent.
Study on Mechanical Behavior of High Pressure Heater Tubesheet 20MnMoNb
Authors: Yannan Du , Bin Ren , Longxian Liu , Xiaoying Tang , Xiaolong Xue , Weiping Zhu , Weiping Ouyang 
Published: November 2019

Abstract
20MnMoNb alloy steel is a structural steel for forgings with good mechanical properties, which is typically used in the manufacture of pressure vessel tube sheets. The mechanical properties of 20MnMoNb at different temperatures were systematically studied. It is shown that the 20MnMoNb material has the good high temperature resistance. With the increase of temperature, the yield strength and tensile strength of the material have little difference. The tensile strength is nearly 800MPa at high temperature, and the yield strength is about 643MPa, which could meet the complex working environment of the high pressure heaters. It is helpful to improve the accuracy of analytical design results and provide a data base for the revision of subsequent material standards.
Antioxidant activity of extracts from Uncaria scandens
Authors: Zhang Fulu , Yang Aimei , Ma Songyao , Shang Huilan , Wang Zhihui 
Published: November 2019

Abstract
The anti-oxidation activity of petroleum ether, ethyl acetate and n-butanol extracts from ethanol extract of Uncaria scandens were studied, using DPPH free radical scavenging, hydroxyl radical scavenging, and total reducing power determination. The results showed that the ethanol extract of Uncaria scandens has strong antioxidant activity, especially the DPPH free radical scavenging ability, which is similar to the positive control vitamin C.
Enzymatic Hydrolysis Effect of Different Components of Bacillus licheniformis on Globinase
Authors: Song Zurong , Feng Xuehua , Tao Ali , Chen Tao 
Published: November 2019

Abstract
To replace the globin with blood globulin powder made from pig blood, to explore the enzymatic hydrolysis effect of different components of Bacillus licheniformis on globinase, and provide evidence for further development and utilization of pig blood. Orthogonal test was carried out by using different reaction temperature, substrate concentration, reaction time and pH value. The enzymatic hydrolysis conditions were optimized, and the optimum conditions were determined by enzymatic hydrolysis. The components of the strain were determined by one-way experiment. Through this experiment, it was found that the five stages after the separation and purification of the protease from Bacillus licheniformis passed through the ultrafiltration membrane, and the component of 50-100 nm has the best enzymatic hydrolysis effect with globin. The 50-100 nm segmentation of Bacillus licheniformis by ultrafiltration separation has the best globin enzymatic hydrolysis effect. It can be screened for deep processing of pig blood, which has great application prospects for pig blood processing and environmental protection in China.
Development of Drawing Program of Borehole Histogram Based on Delphi
Authors: Yu Liu , Lei Zhang , Zhengjun Huang , Dong Zhang 
Published: November 2019

Abstract
Borehole data is basic in geological analysis in oilfield, geological and engineering exploration, and civil engineering departments, while the histogram that can visually represent borehole data is very important for extracting geological information and guide related work in the later stage. This paper develops the borehole chart automatic drawing program under Windows through the summary analysis of quantities of borehole data, based on the Delphi development platform, using the object-oriented programming method. This program can not only automate the mapping of single borehole histograms, but compare the porous histograms to draw the stratigraphic curve, so as to analyze the connection of different rock strata and their possible geological structures.
Research on Evaluation Indicator of Effective Assets Investment Efficiency of Power Grid Enterprises under Lean Operation Mode
Authors: Yang Kan , Lu Yanchao , Lu Xiaofen , Zhu Yaoqi , Zhang Yihong 
Published: November 2019

Abstract
In 2019, State Grid Corporation proposed the strategic goal of “three-type, two-network, world-class”, requiring all units to focus on the company’s investment effectiveness and focus on promoting the high-quality development of the company and the power grid. Based on the analysis of the electricity reform policy and the company’s strategy, this paper establishes an effective asset investment performance evaluation index for the three-tier power grid enterprises in provinces, cities and counties. Through the research on the quantitative method of indicators, a three-level evaluation model of provinces, cities and counties was established to support the evaluation of investment effectiveness of power grid enterprises. This paper takes the province, city and county three-level units as an example, and extracts data to measure and verify. The evaluation results objectively reflect the effectiveness of power grid assets investment of power supply companies at all levels, and propose investment management based on the calculation results.
Research on the Development Strategy of Rural Logistics in China Post
Authors: Wendong Chen , Wei Huang , Ruijie Zhang , Peng He , Heng Li , Qian Wang 
Published: November 2019

Abstract
Through the analysis of the current situation of rural logistics development, we find that there are many problems in the development of rural logistics in China: imperfect infrastructure, incomplete use of information systems, the development of rural logistics can not be connected with the city, and the logistics system of rural development is chaotic; through the analysis, we find that China Post has a very strong advantage in rural logistics, according to economic development. The exhibition situation is divided into logistics services, specialization services, and then through the platform of Postal Music Network, new retail mode is introduced to let agricultural products come out and commodities go in. China Post through promotes the platform of Postal Music Network, and constantly improves the platform. Information system and logistics are seamlessly docked, so that rural e-commerce development can drive rural logistics, promote rural economic development, and further improve the quality of life of rural people.
Impact Characteristic Analysis of Grounding Devices under High Energy Lightning
Authors: Liu Sanwei , Zhang Liu , Wang Feng , Yue Yishi , Huang Fuyong , Wang Cheng 
Published: November 2019

Abstract
In this paper, the research progress of soil discharge phenomenon is comprehensively analyzed from three aspects: soil discharge imaging technology, soil impact breakdown mechanism and calculation method of grounding device impact characteristics. It is urgent to collect the important image data of soil discharge in order to study the regional structure model of soil discharge, and then accurately calculate the electrical parameters of soil discharge characteristics, and apply it to the calculation of transient model. Compared with the numerical calculation methods of grounding device, the electromagnetic field method is recommended for the calculation of impact characteristics.