bluuebunny/crossref_metadata_2025_split huggingface dataset:
The comprehensive utilization technology of crop straw
Authors: Wang Wenhao , Cheng Zhichao , Cong Qu 
Published: March 2020

Abstract
the development of agriculture in our country is related to the economic development of our country, and agricultural development will produce a lot of crop straw. Crop straw is the name for the remains left after the crops are collected. In the north, corn is the most common one. A large number of crop straw burning causes a lot of pollution every year in the autumn harvest season, and damages the soil structure of the land. However, effective and reasonable return of crop straw can greatly increase the fertility of the land and effectively reduce the use of chemical fertilizer. Therefore, the comprehensive utilization of straw is under rapid research in order to effectively use the advantages of straw.
Nitrogen and Phosphorus Storage of Baiyangdian Wetland influences and Threats on the ecology factors
Authors: Li Rui Kang , Dai Qing Yun , Zhang Hong Mei 
Published: March 2020

Abstract
Baiyangdian is the north China plain, the largest and most typical freshwater lake wetland, has important effects on the ecological environment in north China, called the kidney of north China, therefore, strict protection of Baiyangdian wetland is of great practical significance. This Baiyangdian wetland’s study aims to understand the different ecological communities and wetland ecological health assessment in wetland system, and to analyze and study the water quality and biodiversity of Baiyangdian wetland. Then through analyses of nitrogen and phosphorus storage, advantages and disadvantages of Baiyangdian among the wetland are clarified. Finally, based on the successful experience of some other wetland, some suggestions on the future development of wetland are put forward for Baiyangdian .
Study on Establishing Early Warning Model of Soil Salinization Disaster
Authors: Li Wanwan , Jin Li , Li Qingguo 
Published: March 2020

Abstract
This paper introduced the selection of evaluation factors of soil salinization hazard warning model and the calculation of weight of various factors. We used the fuzzy optimal BP neural model to predict the development degree of future soil salinization, which can effectively reduce the impact on soil salinization disasters.
Research status and countermeasureson cold resistance and photosynthetic physiological response of flowers
Authors: Xie Pengyuan , Yang Shuhua , Qi Xiaoli 
Published: March 2020

Abstract
With the increasing attention to environmental protection and treatment, the winter heating mode in most areas is gradually changing from coal to gas or coal to electricity. Due to a variety of uncontrollable factors, there is a short period of temperature lower than the sub-low temperature, which often brings serious constraints and losses to the commercial production and ornamental utilization of flowers. Low temperature is one of the main abiotic stresses in the growth of potted flowers. The growth, development and physiological metabolism of potted flowers are directly affected by low temperature. Among them, photosynthesis is the most sensitive process to low temperature. Photosynthesis is the most important physiological and biochemical process on the earth, so the study of photosynthetic physiological response of potted flowers under low temperature stress is very important practical significance and application value in the production of potted flower varieties.
Analysis and Control Technology of blue Smoke in Coal-fired Power Plants
Authors: Guo Liqiang , Yan Hanbing , Li Yongxiang , Chen Xiufang , Liu Fengchun 
Published: March 2020

Abstract
The control of blue Smoke in coal-fired power plants is of great significance to the atmospheric environment. The emission of SO3 from coal-fired power plants is an important factor of blue Smoke production, which mainly comes from boiler combustion and selective catalytic reduction (SCR) denitration. When the content of SO3 in the flue gas is too high, it will cause problems such as dust accumulation, low-temperature acid corrosion, increased air preheater resistance, and degraded performance of the electric precipitator, which will affect the economical efficiency and safety of the unit. In this paper, the causes of blue Smoke in coal-fired power plants are analyzed, the conversion rate of SO3 is calculated and verified, and technical measures to control colored plumes are proposed.
Enzymatic Properties of Endopeptidase in Wheat Malt
Authors: Zhan Chao , Jin Yuhong , Zhao Zhengtao 
Published: March 2020

Abstract
Endopeptidase is the main enzyme in wheat malt. Besides, long chain proteins are broken down by endopeptidase into small protein molecules, or peptides, which can influence the beer quality. In this paper, enzymatic properties of endopeptidase in wheat malt were studied based on a more accurate method for the endopeptidase activity measurement. The activity of endopeptidase was determined by measuring the content of oligopeptides and polypeptides in the reaction system. It was found that the optimum temperature of wheat malt endopeptidase was 50°C. It was shown that endopeptidase was sensitive to temperature and the low temperature is more suitable for endopeptidase. Further increase of temperature to values higher than 50°C resulted in the decrease of enzyme activity. At 65°C, the enzyme activity was decreased to 7.47u±0.42, then the enzyme can be deactivated at temperatures higher than 70°C. The enzyme had optimal activity at pH 4.0. When the pH value was above 4, the enzyme activity cannot remain stable after incubation. The enzyme was inhibited by Ca2 +, Pb2 +, Zn2+, Cu2 +, EDTA.
Effect of Activation Condition on the Performance of Activated Sludge Carbon-Based Adsorbent in Diesel Desulfurization
Authors: Jin Mei , Hu Bao , Tang Xinnan , Zou Linling , Yu Guoxian 
Published: March 2020

Abstract
Sulfur compounds in diesel oil can be removed by the adsorption technology. Based on the urban sludge as the main raw materials, activated sludge carbon-based absorbents were prepared through the cothermalization of urban sludge and rice hull by adding ZnCl2 as the chemical activator under the different activation conditions. The obtained absorbents were characterized by nitrogen adsorption characterization and were investigated in the the dibenzothiophene adsorption capacity of n-octane model oil. The characterization and the adsorption performance results showed that the amount of the micropore volume and the ratio of the micropore volume to the total pore volume played the important effects on the dibenzothiophene adsorption capacity behavior. The adsorbent could be obtained a larger amount of micropore and a bigger specific surface area, micropore specific surface and micropore volume under the activation temperature of 600 °C and the activation time of 60 min, which resulted a better behavior on the dibenzothiophene adsorption capacity of 19.9 mg S/g. The application of urban sludge in the preparation of the desulfurization adsorbent can provide a new way for the harmless and resource recovery usage.
Effect of Zinc Chloride on the Sludge Carbon-Based Adsorbent in Diesel Desulfurization
Authors: Jin Mei , Hu Bao , Tang Xinnan , Zou Linling , Yu Guoxian 
Published: March 2020

Abstract
Sulfur compounds in diesel oil can be removed by adsorption technology. Based on urban sludge as the main raw materials, activated sludge carbon-based absorbent was prepared through the cothermalization of urban sludge and rice hull by adding ZnCl2 as the chemical activator. The obtained absorbent was characterized by nitrogen adsorption, elemental analysis, FT-IR characterization. The textural structure and pore distribution results showed that the amount of the micropore and the surface area played the important roles on the adsorption capacity. The elemental analysis results revealed that the percentage of C element was the key factor in the adsorption experimental. FT-IR characterization results illustrated that the oxygen-containing groups on the absorbent surface increased significantly with the addition of ZnCl2 activator, especially the amount of alcohol hydroxyl groups and quinone hydroxyl groups. ZnCl2 activated sludge carbon-based adsorbent was applied in the adsorption capacity of dibenzothiophene with model oil. As a result, the adsorption capacity was up to 19.9 mg S/g at ZnCl2 concentration of 50 wt %, which can provided a new way for harmless and resource recovery of urban sludge.
Study on the Effect of Porous Subsurface Flow Constructed Wetland on Sewage Purification
Authors: Zhou Xinyue , Han Yancheng , Wang Yuelei , Chu Pingping , Liang Mengyuan 
Published: March 2020

Abstract
In this paper, a new porous subsurface flow constructed wetland was developed to remove BOD, TN and TP from sewage. A water inlet is arranged at the front of the wetland 0.25m and 0.45m from the ground. The design has the characteristics of simple structure and uniform water distribution, which makes the wetland easy to construct and improve the removal effect of pollutants. The results showed that the average removal rates of BOD, TN and TP in the wetland system were 85.63%, 80.29% and 89.07%, respectively, when the average temperature was 26°C and the hydraulic retention time was 1.3d. The removal effect is good, which can play a certain ecological and social benefits.
Study on the optimization of the enzymatic hydrolysis of antimicrobial protein from Moringa oleifera Leaves by response surface method
Authors: Huang Zhilian , Kang Dandan , Li Jihua , Guo Changqing , Peng Shaodan 
Published: March 2020

Abstract
Moringa oleifera leaves contains antimicrobial protein, which is absent of optimized extraction and systematic analysis. The aim of this work is to provide a systematic research of its protein isolate hydrolysate on the optimized extraction via the response surface method and the functional properties. The isolated protein was obtained by alkali extraction and acid precipitation, which purity was 81.12%±0.03%. Through the response surface method, the result of the optimization obtained the enzymatic hydrolysis of antimicrobial protein was as follows, the substrate concentration of 5.09%, the Bromelain enzyme dosage of 3883.42 U/g, pH 7.0 and temperature of 55 °C for 3.64 h . And the protein hydrolysate was indicated that the purity was 88.59%±0.13%. Moreover, the ash, the crude fat and moisture were declined significantly compared with the protein isolate. This subject could provide basic theoretical basis for the application of M. oleifera leaves protein.
FDM based OA-ICOS for high accuracy 13C quantification in gaseous CO2
Authors: Jin Zehao , Külls Christoph 
Published: March 2020

Abstract
The wide-range applications of isotope analysis make isotope measurement approaches under attentive focus. Off-axis integrated cavity output spectroscopy technology (OA-ICOS) is the most advanced isotope analysis method; however, further studies are still needed to avoid signal noise and improve accuracy. Zero-phase low pass filtering multivariate Fourier Decomposition Method (FDM) was applied for data analysis in the present study, which has its unique advantage to fix up rapid but seasonal changes for nonlinear and non-stationary time series data. In the present study, δ13C content in gaseous CO2 sample were measured by OA-ICOS at ambient temperature. The experimental data treated by FDM showed less signal fluctuant and clearer value change tendency than what showed in raw data, whereas the data density kept same with that of raw data. In the meantime, the experimental results suggested that it is flexible to decide the variance explanation rate by simply change the order of an FDM filter. This approach meets up with the requirements of different practical application scenarios of isotope analysis, which enhances the feasibility for OA-ICOS application in real-time environmental monitoring field.
Research on ecological investigation and evaluation of highway area in mountainous area based on RS and GIS
Authors: Huang Cheng-Cen , Xu Guo-Ping , Yang Hua , Wei Ming , Jia Li-Qiang , Chen Liang , Hu Hao , Wang Zhao-Ming 
Published: March 2020

Abstract
With the development of economy, the road construction of our country gets a rapid progress. Especially in mountain roads, the influence of road construction on environment has increasingly been focused. The environmental problems of road construction on project are mostly embodied in those problems of water, air, and ecology. landscape, this paper is taking the Baise-Leye highway as the study area, using the remote sensing and GIS technique to investigate the eco-environment. With RS, GIS, from Remote sensing analysis and ecological degradation degree evaluation, comprehensive consideration of the ecological characteristics, economic and cultural development level, environmental pollution prevention, etc. Investigate and study the ecological status of roads before and after highway construction. Provide a basis for the rational presentation of ecological restoration measures, system of highway ecological landscape by using 3S technology and analytic hierarchy process.
Research of ecological landscape assessment system of highway based on 3D GIS
Authors: Huang Cheng-Cen , Xu Guo-Ping , Yang Hua , Wei Ming , Jia Li-Qiang , Chen Liang , Hu Hao , Wang Zhao-Ming 
Published: March 2020

Abstract
This paper is taking the Baise-Leye highway as the study area, using 3D technique to investigate the eco-environment. With the advancement of computer technology, especially the development of GIS technology, the paper is using the 3D GIS technique in the field of highway engineering will be more profound. The authors are taking the UAV image to extract 3D network and model, based on 3D model, the authors carry out highway environment simulation analysis. The authors also construct pollution assessment method to evaluate of road environment information.
Effects of root exudation on the accumulation of Cd by Chenopodium ambrosioides L. and maize in intercropping systems
Authors: Qin Li , Zhao Mimi , Li Bo , Li Yuan , Li Mingrui 
Published: March 2020

Abstract
Pot experiments were carried out to study the effects of intercropping by Chenopodium ambrosioides L. and maize on the root exudates of soluble sugar and amino acids, in order to understand the relationship between root exudates and cadmium accumulation in plants. The results showed that, compared with monoculture system: (1) after intercropping with maize, the content of soluble sugar in root exudates of C. ambrosioides increased by 106.54%, the content of amino acids increased by 52.73%, the available Cd content in rhizosphere soil increased by 12.09%, the root Cd content increased by 15.52%. (2) The content of soluble sugar in root exudates of maize increased by 40.41%, the content of amino acids increased by 70.59%, the available Cd content in rhizosphere soil increased by 29.35%, the shoot Cd content of maize increased by 208.26%. (3) There were significantly posotive correlations between the contents of soluble sugar and amino acids secreted by C. ambrosioides and maize roots and the available Cd content in soil. In addition, there was a significant positive correlation between the available Cd content in soil and the Cd contents in the shoots and roots of plants. The results showed that the increase of soluble sugar and amino acid content of root exudates under the intercropping system caused the change of the available Cd content in the rhizosphere soil, which eventually changed the accumulation of Cd in the shoot and root of C. ambrosioides and maize.
Air Quality and Local Government Governance in China
Authors: Liu Yan 
Published: March 2020

Abstract
China’s economy has been growing rapidly for decades. Despite the increasing GDP, its rapid development has caused a string of serious environmental problems, especially air pollution. With the frequent occurrence of serious and complex air pollution phenomena such as smog, China’s air quality problem has become a research focus of the international community, which poses severe challenges to the Chinese government to improve its environmental governance capability and governance methods. In spite of the central government’s continuous attention to air quality issues, local governments tend to choose economic growth over environmental protection. The law enforcement of local governments to control air pollution is a direct factor affecting regional air quality. China’s mode of environmental law enforcement has exposed many problems in the field of air quality control. Through direct leadership of the local Environmental Protection Bureau (EPB), the Chinese government has formed an old administrative mode and a one-sided guiding mechanism with economic development as an indicator. By analyzing the number of days with air quality on and above the Air Quality Level 2 in various regions in China, and by combining the analysis with the GDP of various regions in 2018, this study found that the number of days with air quality on or above Level 2 and the development of local GDP show a positive correlation. Therefore, in response to such management defects, China should focus on strengthening the response and implementation of local governments to environmental policies and form a management structure under the direct leadership of the Ministry of Ecology and Environment (MEE). Local governments should shift from the simple mode of “administrative supervision” to the comprehensive mode of “administrative supervision + coordination” to form a new mechanism of cooperative governance under the leadership of local governments and implemented by the Local EPB, to decompose the overall and stage tasks of air pollution control, and to specifically implement the governance tasks and objectives to specific local government departments and the local EPB. We need to improve the efficiency of regional air pollution control, and effectively curb the deterioration of air pollution.
Application and Research of High Salt Organic Liquid Wastes Incineration Equipment and Technology
Authors: Zhang Rong-Xiang , Wang Qing-Biao 
Published: March 2020

Abstract
High-salt organic liquid wastes treating were worldwide problem. It perplexes many chemical industries such as medicine, pesticide, metallurgy, papermaking, printing and dyeing. A new high temperature incineration technology is introduced. This is especially suitable for the treatment of organic waste liquid. At the same time, it is divided into a variety of segmentation technology routes. According to the type and amount of salt or different process routes, incineration technology can effectively transform organic waste liquid into harmless substances. At the same time, the process also recovers salt resources and generates steam, and the gas emission reaches the standard. In this paper, we will compare the different treatment methods for route selection. Through the summary of process optimization, it can provide strong support for innovation decision-making and application planning of liquid waste incineration technology.
Comparative Analysis of Adult and Adolescent Environmental Awareness and Intervention of Adolescent Environmental Awareness
Authors: Long Zhengxia , Wang Shuai , Gu Xiaoying , Sun Yan , Yu Jiawen , Yang Jinhua 
Published: March 2020

Abstract
This study investigated the contrast between the environmental awareness of adults and adolescents, which explained an intervention on the environmental awareness of adolescents. Questionnaire survey method was adopted, T test and variance analysis were used to obtain the results. In addition, relevant sample T test was conducted for the first and second post-test results of the experimental group to verify the durability of environmental education effect. Result shows that: (1) the environmental awareness of adults was slightly higher than that of adolescents; (2) short-term environmental education played an obvious role in improving young people’s environmental awareness in a short time. This study updated the conclusion that the environmental awareness of teenagers was higher than that of adults, indicating the achievement of environmental education in China over the past 20 years. It can be also concluded that the short-term environmental education had a certain effect on improving the environmental awareness of youth, but it couldn’t last long. Short-term environmental education can be regarded as a supplement in present environmental education curriculum. Moreover, environmental education should be continuously.
Air purification in confined spaces
Authors: Wu Mengjie , Liu Kun 
Published: March 2020

Abstract
How to provide clean, healthy and fresh indoor air in the process of controlling atmospheric pollution is one of the major challenges facing the present and the future. At present, people mostly use air purification technology to optimize indoor air quality. Air purification technology can effectively remove indoor pollutants and improve indoor air quality. By considering the types of pollutants, the improvement of air quality, the filtration performance of purifiers, the current research progress and advantages, limitations and challenges of air filtration technology are discussed, and the development trend of air purification technology is forecasted. This article reviews the synergy between different air purification technologies, air filtration theory and purification technology.
The effects of Enhanced UV-B Radiation on Root Morphology and Secretion Content of Rice (Oryza sativa Linn.)
Authors: Yang Jing , Li Ming-Rui , Qin Li , Feng Shu-Hua , Zhan Fang-Dong , Li Yuan , He Yong-Mei 
Published: March 2020

Abstract
A hydroponic experiment was carried out to study the effects of UV-B radiation (5.0kJ/m2) on root morphology and root exudates in the local rice variety Baijiaolaojing in a terraced field in the Yuanyang region of China. It was observed that UV-B radiation had the following impact on rice physicochemical properties (1) significant inhibition in both root biomass and the whole biomass of rice, (2) significant increase in the free amino acid and total phenol content secreted by roots on the 40th and 60th day of growth, (3) significant increase in the soluble sugar content in all three growth phases (4) significant increase in oxalic acid and succinic acid, (5) significant decrease in malic acid. The content of tartaric acid was not significantly impacted by the two treatments (natural light 0 kJ/m2, UV-B radiation (5.0kJ/m2). Therefore, UV-B enhancement significantly affects the content of low molecular organic acids in rice, which is closely related to its altered root morphology.
Study on Hydraulic Properties and Sediment Transport Law of Grassed Waterway
Authors: Lichao Zhang 
Published: March 2020

Abstract
Ecological grassed waterway not only has the function of drainage, but also has the ecological function of sediment, nitrogen and phosphorus and other materials transmission, filtering or blocking, material and energy source or convergence. Ecological grassed waterway plays an important role in preventing and controlling soil erosion and purifying water quality. As one of the ecological ditches, the ecological grassed waterway is widely used. As a new type of ecological restoration of soil and water conservation measures, the ecological grassed waterway has the characteristics of convenient construction and low cost. It is the effective combination of soil and water conservation measures, engineering measures and grassland. Ecological grassed waterway are composed of drainage ditches and the plants planted in them. Due to the existence of plants, the hydraulic characteristics and sediment transport rules of the ditches are changed. Therefore, based on the definition and significance of ditches and ecological grassed waterway, the study on hydraulic characteristics and sediment transport rules of ecological grassed waterway are summarized and analyzed, which is of important practical value for the technical development and scheme design of ecological grassed waterway, and can provide scientific reference for relevant research on ecological grassed waterway.