bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photolysis Effect of Muyu Stone/Magnetism Chitosan Microspheres on Chromium in Source Water
Authors: Xia Hongxia , Zhu Qihong , Li Qilan , Yuan Kang 
Published: March 2021

Abstract
In this paper, Fe3O4 magnetism chitosan was made by emulsification crosslinking method. Muyu stone/Magnetism Chitosan Microspheres were prepared by embedding, and then used to photolysis chromium in source water. Based on single factor test, the experimental condition was optimized by quadratic regression orthogonal rotatable composite factorial design. The orthogonal regression model between the removal rate of Cr6+ (y) and microspheres dosage (x1), solution pH value (x2), reaction time (x3) was established as y=88.335+1.380x1+1.468x2+2.217x3-4.465x12-2.556x22-1.266x32+2.363x1x2+4.313x1x3-0.636x2x3. It can be inferred from the model that the removal rate of Cr6+ can reach 93.93% under these conditions of microsphere dosage of 2.444g, pH value of 4.6 and reaction time of 80.4min. Microsphere dosage of 2.444g,pH value of 4.6 and reaction time of 80.4min. Under these conditions, chromium removal rate reaches 93.13%.
Mechanism and application of aggregation induced luminescence compounds
Authors: Xu Zhongan 
Published: March 2021

Abstract
Organic Light-Emitting Diode (OLED) technology has gained wide acceptance in recent years. The popularity of OLED is attributed to the superior properties of organic luminescent materials such as low biotoxicity, outstanding optical properties and easy preparation and modification. Traditional organic luminescent materials usually suffer from aggregation-caused quenching (ACQ) effect and can be hardly utilized in aqueous or solid conditions, while the compounds exhibiting aggregation-induced emission (AIE) property can overcome this limitation. Thus, AIE luminogens have attracted wide attention in the past ten years. Based on the research on the mechanism, classification and application of AIE compounds, a novel aggregation induced luminescence compound based on triphenylamine structure was synthesized and characterized. Our work suggested and confirmed that the synthesized compound showed apparent aggregation-induced emission (AIE) property.
Self-assembly preparation and thermal decomposition of Al/CuO/graphene oxide
Authors: Li Chen , Lu Yanling , Yu Weibo , Zhao Ran , Du Shiguo , Ke Niu 
Published: March 2021

Abstract
Al/CuO/GO composite nanoenergetic materials were prepared by self-assembly. In this text, SEM, TEM, XRD, FTIR, XPS, TA-IR, TG-DSC were used to characterize Al/CuO/GO. The results show that the addition of graphene oxide decreased the initial reaction temperature of Al/CuO, indicating that graphene oxide promoted the reaction of Al/CuO. The exothermic energy of Al/CuO/GO (1 wt %) is 2089 J/g, which is 705 J/g higher than that of the Al/CuO without graphene oxide prepared by solvent ultrasonic method. When the content of graphene oxide exceeds a certain value, the increase of graphene oxide content will cause the decrease of reaction heat release of Al/CuO/GO. The results of thermal analysis infrared combined test show that graphene oxide promoted the reaction of Al/CuO.
Effect of mechanical stirring on CO2 foaming in petroleum
Authors: Zhang Shuhao , Ma Hongtao , Li Yuxing 
Published: March 2021

Abstract
CO2 flooding is an effective technology to improve oil recovery. However, because the foam layer produced in the actual production may affect the gas-liquid separation effect and cause damage to downstream devices. Therefore, it is necessary to study the defoaming technology in the separator. This paper mainly studies the influence of different stirring speeds on the death of the foam layer during the depressurization process and after the depressurization is stopped. The stirring blade can accelerate the formation and disappearance of foam, and the final result is to reduce the time required for defoaming. During the whole process, the survival time of large bubbles is short, but stirring has less influence on small bubbles. Stirring will increase the height of the foam layer, which will affect the gas-liquid separation efficiency in severe cases. Therefore, if the fluid entering the separator has good foam-ability, it is not recommended to directly use mechanical stirring to eliminate foam in the gas-liquid separation process.
Research progress of nano lubricating additives
Authors: Li Ting , Chen Xianggang , Wang Junhai , Zhang Lixiu , Wei Xiaoyi , Zhao Libo , Ma Mengzhou 
Published: March 2021

Abstract
Nano-materials are ultra-fine materials with nano-sized particles, and their unique structure also makes nano-materials have different physical and chemical properties. Nano-materials can be added to a variety of lubricants, play a good anti-wear and anti-friction effect, and can be used in many fields, such as bearing lubrication, gear transmission, cutting processing. At present, the types of nano-lubricating additives include metal element nanoparticles, oxide and hydroxide nanoparticles, nano-carbide and its derivatives, nano-sulfide, nano-rare-earth compound, nano-boron series, polymer nano-beads, etc. This article reviews the research status of nano lubricating additives.
Analysis of the Application of Virtual Simulation Software in Food Testing Technology Course with Atomic Absorption Spectrum1-- Taking the Example of Determining Calcium in Drinking Water by Atomic Absorption Spectrometry
Authors: Yan Gu , Wei Huang 
Published: March 2021

Abstract
Atomic absorption spectrometry is the core content of instrumental analysis and also one of the most commonly used skills in modern detection positions. It can improve the teaching effect to train students on this skill with virtual simulation software. In this project, the experimental group (virtual simulation teaching) and the control group (traditional teaching) were adopted to make a check test in the teaching project of determining calcium in drinking water by atomic absorption spectroscopy, with the purpose of introducing information teaching means and improving teaching quality with simulation software.
Visualization analysis of adsorption of diatomite resources in China
Authors: Zhang Mengxin , Huang Hui , Zhang Jia , Li Ru 
Published: March 2021

Abstract
Objective: Diatomite is widely used in food safety, energy saving, environmental protection, health, biochemical and other fields because of its superior performance. With the help of CiteSpace software, this paper makes a visual analysis of all the literatures related to the adsorption of diatomite in HowNet database. Results: The number of published papers of related research in China is increasing year by year, and the number of published journals is relatively concentrated. There are many authors who have been engaged in related research for a long time, but there are too few research institutions, and the intensity of cooperation among research institutions is not high. Conclusion: This paper deeply explores the development process and research hotspot of diatomite in adsorption, in order to promote the application of diatomite in production and life, and provide reference research ideas for scholars.
Lattice Boltzmann Method development of PEMFC in mesoscopic scale
Authors: Wu Mao-Liang , Li Ru-Run , Lang Xian-Ji , Song Ming 
Published: March 2021

Abstract
Proton exchange membrane fuel cell (PEMFC) mainly relied on the modeling analysis of the traditional numerical method. However, the scale of the research is bigger than porous medium layer of the particle that can’t meet the actual mechanism of the simulation. Hence, as a new mesoscopic numerical method, Lattice Boltzmann method (LBM) builds a model based on the microstructure and analyzes the dynamics, while the transfer state of the porous media layer of PEMFC can be more realistically described during its actual operation.
Efficient Biodiesel Production Catalysed by Lipase Immobilized on Nanowire Coils
Authors: Liu Peng , Liu Xinlong , Liu Hao , Wang Peng 
Published: March 2021

Abstract
The lipase from Candida rugosa (CRL) was covalently immobilized on various carbon nanomaterials (functionalized nanowire coils and multi-walled carbon nanotubes) and tested for biodiesel production. Using the most active lipase preparation (covalently immobilized CRL on Nanowire coils) under optimal conditions, 96.8% conversion of waste oil was obtained after only 12 h reaction time. Moreover, the biocatalyst maintained nearly 90% of its initial activity in the batch system after 13 recycling experiments and still 80 % initial activity after storage 240 d.
Temperature Switch: Why a Solution Reversely Changes Between Transparent @ 25 °C and Cloudy @ 45 °C
Authors: Yang Xing 
Published: March 2021

Abstract
The solubility of a substance determines how much of it will dissolve in a particular solvent at a given temperature. For most of the organic/inorganic compounds such as glucose and sodium chloride, their solubility in water increases with temperature. However, for polymers such as poly N-isopropylacrylamide and polyethylene oxide, they show lower critical solution temperature (LCST) behaviors and their solubility decreaseswhen temperature increases. A small molecule, 1,8-bis(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)anthracene-9,10-dione) (AQ-1,8-3E-OCH3
), shows an LCST behavior that its water solution is transparent at a temperature less than 45 °C, and cloudy at a temperature above 45 °C. More importantly, the whole process is reversible.[19] The aim of this study is to explain the LCST behavior of AQ-1,8-3E-OCH3
so that further application can be developed. After reviewing inorganic compounds, organic molecules, and polymers, The essay concluded that the hydrophilic tails (3E-OCH3
) and the hydrophobic core (AQ) of AQ-1,8-3E-OCH3
endow its amphiphilic property to form micelles, thus being phase separated from water when it is heated. In the future, it is expected that AQ-1,8-3E-OCH3 can be applied for drug release. For example, drug molecules can be first surrounded in the AQ-1,8-3E-OCH3
micelles at a higher temperature, then get released to targeted cells at a lower temperature.
Analysis of Methanation Path Based on Power-to-X Technology——Taking China as an Example
Authors: Zhao X L , Li Q F , Yang Y W , Song L F 
Published: March 2021

Abstract
In order to accelerate the realization of the “Paris Agreement” global warming temperature control goals and to achieve carbon emission reduction and green sustainable energy development, countries around the world are actively exploring and developing new energy utilization technologies. This paper takes China as an example to study and analyze the methanation path based on Power-to-X technology. The results show that:①China’s potential for hydrogen production from renewable energy in the future, as well as the introduction of CO2 capture technology for thermal power plants and other sectors for carbon emission reduction and resource utilization, all have good potential, and both can provide sufficient raw materials for the methanation process;②Methanation production by providing green hydrogen and capturing and recovering carbon dioxide is in line with the goals and requirements of the new generation of energy systems for sustainable development. This technological path is actually helpful for delaying global warming and realizing the reduction and resource utilization of renewable energy curtailment in CO2. At the same time, in the future, relying on the synergy of technology and policy to continuously increase the scale of the system to reduce the overall cost, it is expected to achieve large-scale applications.
Study on the Distribution Characteristics and Purification Effect of Formaldehyde in Decorated Indoors under Different Ventilation Methods
Authors: Hao Hong , Zhang Yidan , Zhang Hailong , Song Xinyi 
Published: March 2021

Abstract
This paper analyzes the improvement of formaldehyde concentration in residential decoration after one month and ten months by testing, and uses simulation software to numerically simulate the distribution of formaldehyde in the closed, natural ventilation and mechanical ventilation conditions of the decorated house. The results indicate that, the concentration of formaldehyde is 0.10 mg/m3 after one month of decoration, 25% above standard;reduced to 0.08mg/m3 after ten months, reaching the standard. In closed conditions, the concentration of formaldehyde near the sofa and bed is the highest at 0.08mg/m3, while the concentration in the kitchen and bathroom is slightly lower, around 0.07mg/m3. Compared with closed conditions, the concentration of formaldehyde in the living room, master bedroom, secondary bedroom, and kitchen is reduced by 40%, 35%, 10%, and 25% respectively when the natural ventilation wind speed is 0.2m/s; reduced by 80%, 80%, 50%, and 70% respectively when the natural ventilation wind speed is 2m/s; reduced by 40%, 55%, 55%, and 25% respectively when the mechanical ventilation wind speed is 2m/s.
Dynamic Changes and Analysis of Air Quality in Private Cars
Authors: Hao Hong , Zhang Hailong , Song Xinyi , Zhang Yidan 
Published: March 2021

Abstract
This paper selects CO2, formaldehyde and VOC as pollutants, and dynamically tests the concentration of CO2,formaldehyde and VOC in different ventilation modes, different seasons, different road conditions and different purification methods to explore the change of pollutant concentration and its influencing factors under different working conditions. According to the dynamic test results, more representative formaldehyde was selected. The breathing height Z=0.75m section was used as typical section. Simulation conditions are divided into: different air supply speed, different air supply temperature. The results show that the concentration of formaldehyde / VOC is the highest in summer, the lowest in excessive season, higher in crowded road conditions, the highest of CO2 in excessive season and the lowest in summer.Concentration of pollutants is relatively ideal in open-window ventilation and air conditioning external cycle. The use of activated carbon and vehicle purifier in the vehicle can play a certain purification effect, among which the purification effect of vehicle purifier is better. Higher air supply speed and lower air temperature will reduce formaldehyde concentration.
Soil quality assessment of coal gangue piles under different ecological restoration pattern in Yunnan-Guizhou Mountainous area
Authors: Tao Lanchu , He Chengzhong , Tu Chunlin , Liu Zhennan , Li Bo 
Published: March 2021

Abstract
The paper aimed at the problem of soil quality and heavy metal pollution of coal gangue piles in Yunnan-Guizhou mountainous area, the soil quality and heavy metal pollution of copper, zinc, iron, manganese and other heavy metals in coal gangue piles at different ecological restoration pattern were determined, and the soil quality and pollution risk degree were evaluated. Results showed that soil pH value of the survey sites ranged from 3.04 to 8.11, soil organic matter content ranged from 48.58 g·kg−1 to 202.29 g·kg−1, soil total nitrogen content ranged from 0.66 g·kg−1 to 2.04 g·kg−1, soil available nitrogen content ranged from 5.25 mg·kg−1 to 33.25 mg·kg−1, soil total phosphorus content ranged from 0.61 g·kg−1 to 2.56 g·kg−1, soil available phosphorus content ranged from 0.46 mg·kg−1 to 102.41 mg·kg−1, soil total potassium content ranged from 9.44 g·kg−1 to 33.25 g·kg−1, and soil available potassium content ranged from 3.25 mg·kg−1 to 149.63 mg·kg−1; soil total copper content of the survey sites ranged from 66.76 mg·kg−1 to 225.83 mg·kg−1, soil total zinc content of the survey sites ranged from 115.15 mg·kg−1 to 368.48 mg·kg−1, Soil total iron content of the survey sites ranged from 22.57 g·kg−1 to 64.17 g·kg−1, and soil total manganese content of the survey sites ranged from 223.79 mg·kg−1 to 1898.57 mg·kg−1. These Results implied that the coal gangue piles were barren, nutrition and water retention need to be improved in the process of restoration, and the risk of soil copper and zinc pollution in these coal gangue piles were low.
Distribution Characteristics and Pollution Assessment of Hg in Soil around Coal Gangue in Fengfeng Mining Area
Authors: Tian De , Gu Mingxu , Zhao Jianqing , Wang Chenchen , Du Lin 
Published: March 2021

Abstract
In order to understand the present situation and ecological risk of Hg pollution in soil around the gangue hills in Fengfeng mining area. Based on the concentrations of Hg in the soil samples, the pollution status and ecological risks of Hg in the soils were assessed by single contamination index, Nemerow comprehensive pollution index and potential ecological risk index. The results showed that: firstly, the concentrations of Hg were 1.98 mg kg−1 to 65.75 mg kg−1 in the research field, and the concentrations of Hg in 97% of the soil samples exceeded the background value of the soil. Secondly, the average concentration of Hg was higher than the risk screening standard value in China. Thirdly, the comprehensive pollution index of the soil around the coal gangue hills was ES>E>EN>S>WN>3, which belonged to heavy pollution. Lastly, the potential ecological risk index of surface soil at a distance of 0-100m from coal gangue hills and deep soil at a distance of 0-80m from coal gangue hills were greater than 320, which represented extremely high potential ecological risk in the research area.
Energy Saving Strategy and Realization of Honda Eco-car body
Authors: Geng Jie , Wang Xinjian , Kong Chao 
Published: March 2021

Abstract
How many miles can an eco-car run with 1 literature gasoline? The saving fuel requirement is presented by Honda Eco Mileage Challenge (HEMC) to the competing teams. In order to save fuel of eco-car during the race, each team adopts different methods and strategy. In this study, kinds of saving fuel methods of car body are put forward. According to automobile design theory, the car shell with low coefficient of aerodynamic drag and frontal area is designed and made. The frame model is built and simulation analysis with enough torsion rigidity, strength, and light weight is finished in the software UG and ANSYS. The material object of frame and car shell are made.
Research on Relationship between Energy Saving and Emission Reduction Efficiency and Economic Development of Guangdong
Authors: Zhang Caihua , Wu Xiling , Peng Shiyun 
Published: March 2021

Abstract
First, energy consumption and industrial waste gas emission factors are selected to analyze the energy conservation and emission reduction efficiency of Guangdong. Based on which, panel data model is established selecting the three indicator variables of per capita GDP, unit energy consumption, and unit industrial waste gas emission. In addition a series of empirical analysis is carried out through software to explore and research the relationship between energy saving and emission reduction efficiency and economic development.
The impact of government subsidies on the green innovation capability of new energy automobile companies
Authors: Lu Ye , Liu Qin , Li Jia Hui 
Published: March 2021

Abstract
The rapid development of the new energy automobile industry is inseparable from the support of government policies. The subsidy policy is an important policy tool that promotes the improvement of new energy green innovation capabilities to a certain extent. This paper divides government subsidies into two types, direct subsidies and indirect subsidies, and uses a panel regression model to compare and analyze the impact of the two types of subsidies on the green innovation capabilities of enterprises. The research results show that direct subsidies have a greater impact on the green innovation input of new energy companies than indirect subsidies, while indirect subsidies have a greater impact on new energy green innovation output than direct subsidies.
Research on energy consumption monitoring and control method of energy saving and emission reduction for hybrid ships
Authors: Li Fangxuan 
Published: March 2021

Abstract
Hybrid ship as a kind of transport mode with high energy consumption, the monitoring of energy consumption and the control of energy conservation and emission reduction are particularly important. Therefore, effective energy consumption monitoring and emission control methods in the process of ship operation have attracted great attention in related fields. Therefore, this study optimized the structure of the energy consumption monitoring equipment for hybrid ships, and achieved the energy consumption monitoring and control by effectively collecting the energy consumption data of hybrid ships. The application of real-time monitoring system for ship energy consumption can better monitor the energy consumption of hybrid ships and realize the treatment and control of energy conservation and emission reduction according to the monitoring results. At the same time, according to the current situation of ship energy consumption management, through the analysis of the characteristics of ship operation and diesel engine fuel system, this study proposed a low loss, high precision mass flowmeter, to achieve the requirements of energy conservation and emission reduction control. Based on this, strengthening ship basic management, saving Marine fuel and reducing pollution can achieve a win-win situation between economy and environment.
Study on heavy metal pollution in soil by electronic information processing
Authors: Haoran Yang 
Published: March 2021

Abstract
In order to deeply analyze the influencing factors and main sources of soil heavy metal pollution in Huangdao District of Qingdao, 35 soil samples collected from the electronic information area of Haier Industrial Park and Aokema Industrial Park in Huangdao District were selected as the research objects, and the significant biological toxicity of Cd, Cr, Cu, Hg, Ni, Pb, Zn, As in the soil samples were analyzed and the result shows that the variation coefficients of Cr and Ni were examined high, which indicated that the pollutants mainly came from the production and processing activities in the electronic information area. Besides, in accordance with the soil risk assessment level, the analysis of heavy metal pollution status and human health risks of the site in the electronic information area were accomplished and also alarmingly conveyed an obvious risk carcinogenic grade of Cr and As with the “hand-mouth exposure” as the transmission routine of the highest carcinogenic risk level, which urges us to be vigilant.
Preliminary Exploration of Establishing a Spot Quotation Alliance for Cascade Hydropower Stations
Authors: Sun Yi , Xiao Chang , Zhu Yanmei , Chen Shijun , Huang Weibin , Ma Guangwen 
Published: March 2021

Abstract
For the spot electricity market, the quotation combining the hydropower stations is more resistant to uncertainties of runoff and spot price in market bidding. Therefore, it is of great significance to set up a spot quotation system for these hydropower stations. The paper first studied the fundamental characteristics of hydropower stations at different tiers, based on which the establishment of a quotation system of hydropower stations at different tiers and the bidding procedures were proposed. In addition, the paper investigated the joint bid model suitable for hydropower stations at different tiers based on cooperation between bidding stations. Finally, the paper established a coordinated management model and conflict-solving model for the quotation system of hydropower stations at different tiers, providing theoretical support for the system to take part in the spot electricity market and improve its marketing capabilities.