bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transformation of slope runoff base on inflow condition and slope
Authors: Li Li , Li Binbin , Lin Jing , Zhang Jinhu , Zhang Lixin , Duan HL , Bi WY , Li WW , Liu CX , Shen ZZ 
Published: July 2020

Abstract
The development trend of the Yellow River basin is forecasted, and the direction of strengthening the research is put forward, which can provide a useful reference for the research on the ecological protection and erosion law and the high-quality development of the Yellow River basin. The change law of runoff on the slope is very obvious and increases with the increase of discharge flow. In the early stage of the experiment, the runoff on the downslope of each drainage flow was small. With the continuation of the experiment, the soil on the slope was gradually saturated, and the infiltration capacity was gradually weakened, and the balance between incoming water and infiltration was finally reached. Therefore, the runoff on the slope gradually reached a stable state of fluctuation under the condition of a certain amount of incoming water.
Effects of arbuscular mycorrhizal fungi on the repair capacity of perennial ryegrass (Lolium perenne L.) in the uranium-containing soils
Authors: Rong Lishan , Xia Lin , Yuan Bin , Lai Xiaobo , Hu Juntong , Liu Yingjiu 
Published: July 2020

Abstract
This research inclines to study the ramification on arbuscular mycorrhizal fungi (AMF), including Glomusclaroideum (G. claroideum) and G. mosseae strains as well as the repair process of perennial ryegrass (Lolium perenne L.) in the uranium-containing soils. Three times at 120°C for an hour was required to disinfect the soil mixture. Spraying the uranium (U3O8) into the soil mixture and mixing until the ingredients were thoroughly blended, serving the purpose of obtaining the uranium-containing soil mixture with 5 mg/kg U3O8. A week later, AMF was inoculated into every flowerpot and chamber facility. Seeds of perennial ryegrass were cultivated with thirty seeds in each flowerpot or each indoor equipment in a fortnight’s time. Perennial ryegrass plants tended to be harvested after sowing and meeting the conditions of 60 days. Three substances are detected by three different detection means(Photosynthetic pigments, soluble proteins, and malondialdehyde correspond to ethanol extraction method, Coomassie brilliant blue method, and thiobarbituric acid method, respectively). Additionally, testing included activities of alkaline phosphatase and succinate dehydrogenase as well. Moreover, Hitachi H-7650 transmission electron microscope performed the function of observing cellular and subcellular distributions of uranium in plant epidermal cells. Photosynthetic pigment standards of perennial ryegrass are subject to AMF, which not only has a tendency to enhance the soluble protein levels in perennial ryegrass, but also gains the possibility of holding up the uranium-induced improvement of malondialdehyde levels in perennial ryegrass. G. mosseaes is properly more efficacious than G. claroideum in the attenuation of uranium damages in cell structures of perennial ryegrass. Our results demonstrate that AMF is capable of developing the capacity of perennial ryegrass on repairing the uranium-related soil contamination.
Study on Nutrient Content Loss of Processing Manual Vegetable Noodles by Different Cooking Methods
Authors: Wu Xiaowei , Shan Wenwen , Li Jingjun 
Published: July 2020

Abstract
The scientific and reasonable heat treatment methods can be determined after processing through different heat treatment on manual vegetable noodles, using some apparatus like the Kjeldahl nitrogen, Soxhlet extraction and spectrophotometry methods to analysize protein, fat, vitamins and observe their nutritional composition changes. The results showed that: after different heat treatments on manual vegetable noodles, all kinds of nutrient content have some changes of certain differences. Among the changes, vitamin B2 and vitamin C contents produce more apparent changes, and vitamin C loss is more severe. With the prolongation of heating time, vitamin C loss increases; fat content has little growth; adding proper amount of white vinegar into the heating medium, the loss of vitamin B2 and vitamin C reduces; after adding proper amount of dietary alkali, the loss of vitamin B2 increase obviously.
Study on the pyrolysis characteristics of walnut processing by-products
Authors: Xu Shanfeng , Ou Chuan , Chen Yuzhu , Xiao Hui , Fu Chengang , Lu Wenyi , Wu Zhuoling 
Published: July 2020

Abstract
Thermogravimetric analysis (TG) was used to study the thermal degradation behaviour of walnut shell and walnut meal during thermal treatment, and the Kissinger and Flynn-Wall-Ozawa equation were used to calculate the activation energy. The heating rate was 5, 10, 15, 20, 25 °C/min with nitrogen atmosphere. The results showed that the thermal degradation process of walnut shell and walnut meal can be divided into three stages: dehydration stage, rapid pyrolysis and carbonization stage. The greater the heating rate was, the faster the thermal degradation became. At the same heating rate, the weight loss rate, the peak conversion rate and the carbon residue in the rapid pyrolysis stage of walnut shell were all greater than those of walnut meal. The activation energy of thermal degradation of walnut shell was 194.54 kJ/mol and 194.50 kJ/mol. The activation energy of thermal degradation of walnut meal was 167.37 kJ/mol and 169.78 kJ/mol. Walnut shell had higher thermal degradation activation energy and thermal stability.
Preparation and Properties of Superhydrophobic Surface of Conducting Polymer Based on Linking Reaction
Authors: Li Hui 
Published: July 2020

AbstractSuperhydrophobic Surfaces Have Great Application Value in the Fields of Self-Cleaning, Corrosion Resistance, Fluid Drag Reduction, Ice Resistance and the Like, While Superhydrophobic Surfaces with Transparency, Conductivity or Other Functions Have Larger Application Space. the Appearance of the Lotus Leaf Has a Self-Cleaning Function, and the Most Typical Example is the Lotus Leaf Surface Which is out of Silt But Not Imbrued. through the Research and Analysis of Superhydrophobic Phenomena in Nature, the Low Surface Energy Substances on Superhydrophobic Surfaces and the Micro-Nano Scale Hierarchical Structure Are Considered as the Two Decisive Factors for Forming Superhydrophobic. the Classical Theory of Surface Wettability Indicates That the Wettability of Liquid Depends on the Surface Energy and Surface Roughness. Various Methods Have Been Developed for the Preparation of Superhydrophobic Surfaces with Conducting Polymers. by Selecting Materials with Appropriate Surface Energy and Fine Control of Surface Structure, Various Surface Functionalization Can Be Realized.
Overview of Oil-water Separation Equipment Technology of Refined Oil
Authors: Liao Xiao-Hua , Yang Shen-Jun , Qin Ming-Wei , Dou Ming-Yuan , Feng Qing , Li Hao-Ming , Zou Shuai 
Published: July 2020

Abstract
With the continuous development of social industry and economy, environmental problems are increasingly prominent. The disposal of oily wastewater needs to be addressed. As a physical separation method, gravity separation of oil and water has the advantages of low price, economic benefit, convenient maintenance and recyclable oil. This paper introduces the principle of gravity oil and water separation technology, expounds the research progress of gravity oil and water separation technology and equipment, and finally, puts forward the problems existing in the future development and puts forward some suggestions.
Preparation of magnetic ferrocarbon matrix composites and study on their microwave dielectric properties
Authors: Bao Wenli , Chen Wen , Si Zhenjun 
Published: July 2020

Abstract
Among many electromagnetic absorbing materials, carbon matrix composites are regarded as an ideal electromagnetic absorbing agent because of their advantages of low density, low cost and strong electromagnetic loss. It is generally believed that the properties of the electromagnetic absorbent are closely related to its composition and microstructure, but the understanding of the relevant mechanism needs to be further improved. Therefore, this paper studies a new ternary composite material HCNTs/Fe@Fe3O4, which is made of acidified carbon nanotubes (HCNTs) modified by magnetic core shell Fe@Fe3O4 nanoparticles. The material has a variety of interface polarization and dipole loss forms, showing a good electromagnetic absorption capacity and impedance matching performance. The absorption band width of the electromagnetic absorber can reach 5.5 GHz at the thickness of 1.5 mm. The C

o
values of HCNTs/Fe-@Fe3O4 and HCNTs/Fe-@Fe2O3 samples with strong antioxidant capacity fluctuated with the change of frequency, indicating that the eddy current loss had a weak magnetic loss on the samples. Thus, it can be inferred that the changed C

o
value also indirectly proves that the magnetic loss of the sample may come from natural resonance.
A Novel Design of Conjugated Polymer/TiO2 towards Photocatalytic Activity under Visible Light
Authors: Liu Linlin , Duan Qian 
Published: July 2020

Abstract
In this work, we successfully designed and functioned a novel thiophene-based conjugated polymer to match with TiO2, forming a range of PDPPT-T-COOH/TiO2 heterostructure. The as-prepared PDPPT-T-COOH/TiO2 heterostructure showed the remarkable photocatalytic degradation performance of TC. Under visible light, the highest k value of PDPPT-T-COOH/TiO2-3% heterostructure was 0.00652 min−1, which was 5.48 and 11.6 times that of a single PDPPT-T-COOH and TiO2. The enhanced photocatalytic ability could be owed to the interfacial interaction and excellent migration efficiency of charge carriers between the heterojunction photocatalyst. This work may offer innovative feasibility to synthesize PDPPT-T-COOH/TiO2 heterostructure with high stability and superior photocatalytic activity.
Simultaneous removal of SO2 and NO from flue gas using CeO2 promoted CuO/γ-Al2O3 catalysts
Authors: Zhang Qi-Long , Dong Yong , Cui Lin 
Published: July 2020

Abstract
The simultaneous desulfurization and denitration performance of the Cu8Ce3 and Cu8Ce3S catalysts were studied in a fixed-bed reactor. The test results show that the presence of SO2 has a poisoning effect on the denitration performance of Cu8Ce3 when the flue gas temperature is below 350°C, but this kind of toxic effect is reversible. The root cause is that the sulfate species such as CuSO4 and Ce2(SO4)2 formed on the surface of Cu8Ce3S have a lower denitration activity below 350°C than CuO and CeO2. However, Changes in catalyst pore structure after desulfurization could not affect the amount of NH3 adsorbed significantly. The formation of SO4
2- on the Cu8Ce3S catalyst surface increased the number of Lewis acid sites on the catalyst surface, which improved the catalyst’s strength ability to react with NH3 to ensure that Cu8Ce3S has a faster reaction rate than that of Cu8Ce3 above 350°C. The catalytic selectivity of Cu8Ce3S for NH3 is better than that of Cu8Ce3 at 350-500°C, which is the fundamental reason for the improvement of denitration efficiency at high temperatures.
Preliminary estimation of chemical compositions and emissions of particulate matters from domestic cooking in Beijing
Authors: Qi Xuekui , Qu Jingming , Liu Jianhui , Wang Xinxin , Guo Pengran , Zhang Yinglei , Jia Kai , Zhang Yuxiang , Liu Yanju 
Published: July 2020

Abstract
Family cooking oil fume are becoming an important source of urban atmospheric fine particulate (PM2.5). In order to understand the characteristics and level of PM2.5 emission from family cooking fume. Mass concentration, chemical compositions and emission factors of PM2.5 emitted from family cooking fumes were studied based on in situ measurement, and the total amounts of PM2.5 emission from family cooking fumes in Beijing was preliminary estimated. Results showed that mass concentration of PM2.5 emitted from family cooking fumes ranged from 329.88±91.24 to 500.89±130.44 μg·m−3, the average mass concentration was 398.82±102.55 μg·m−3. Among all the measured chemical components of organic carbon (OC), water-soluble ions and element carbon (EC) account for about 51.34%-65.45%, 6.93%-14.78% and 0.73%-1.82%, respectively, other untested components account for about 19.44%-38.05%. According to the field investigation and actual measurement, the average PM2.5 emission factor was 210.57±54.15 mg·f·d−1 based on household number. Combined with the 2018 statistics annual report of Beijing, the total amounts of PM2.5 emission from family cooking oil fumes in Beijing was estimated to be 553.38±142.31 t·a−1 in 2018. The emission amounts has certain uncertainty, the following work should be carried out to measure the PM2.5 emission from family cooking oil fumes in different administrative regions.
Simultaneous removal of SO2 and NOx from biomass flue gas by ozone oxidation + wet scrubbing method
Authors: Xu Zhenghui , Xiao Xiang , Fang Ping , Huang Jianhang , Wu Haiwen , Chen Dongyao 
Published: July 2020

Abstract
In this work, factors affecting NO and SO2 removal were systematically investigated, including O3/NO ratio (V/V), different oxidant types, NaOH and KMnO4 concentrations. Results indicate that the degree of oxidation cannot be pursued too much and the best O3 / NO ratio (V/V) is 0.5. The increased amount of KMnO4 and NaOH promoted the removal efficiency of NOx. The key to the removal of NOx by KMnO4 was mainly that when the KMnO4 was 0.013 mol / L, the removal efficiency of SO2 and NOx reached 100% and 93.75%, respectively. This indicates that the technology can not only efficiently remove NO and SO2, but also has a great application prospect.
Design, Synthesis and Photophysical Properties of Chlorinated Small Molecule Non-fullerene Acceptor Based on Benzotriazole for Organic Solar Cells
Authors: Yang Can , Han Zi-Yang , Zhang Shao-Wen , Wang Jin-Liang 
Published: July 2020

Abstract
A novel narrow band-gap chlorinated non-fullerene pentacyclic small molecule acceptor based on benzotriazole with extended absorption edge to the near-infrared (NIR) region, named BZIC-4Cl, was designed and synthesized. Through introducing multi-fused benzotriazole and IC-2Cl, BZIC-4Cl could maintain a lower optical bandgap of 1.38 eV with broad and efficient absorption band from 500 to 950 nm due to increased π−π interactions by the covalently locking thiophene and benzotriazole units. There is a stronger intermolecular charge transfer (ICT) effects between the BZTP core and IC-2Cl end-group. The purity and chemical structure of the acceptor, namely BZIC-4Cl, were tested by 1H NMR. Even though BZIC-4Cl showed slightly poor solubility in certain organic solvents, BZIC-4Cl showed broad and strong absorption with a narrow band-gap which can be matched with polymer donor for efficient organic solar cells.
Adsorption properties of β-cyclodextrin cracking products for Cd2+
Authors: Ying Liu , Liu Junhong , Li Jin , Guo Jianhua 
Published: July 2020

Abstract
B-cyclodextrin can react with metals through hydroxyl groups, which has a certain contribution to the removal of heavy metals. However, the application of β-cyclodextrin in heavy metal adsorption is limited because of its slow adsorption speed and low adsorption capacity. In this paper, β-cyclodextrin was pyrolyzed under oxygen limitation to prepare β-cyclodextrin pyrolysis product, and its adsorption performance of Cd2+ in water was studied. The adsorption of Cd2+ by the β-cyclodextrin cracked product conforms to the quasi-first-order kinetic model, and the Langmuir fitting effect is better. The maximum adsorption capacity of Cd2+ by β-cyclodextrin cracking products prepared at 300 °C, 500 °C and 700 °C is 1029.04mg/g, 1237.42mg/g and 829.06mg/g, respectively.
Layer-by-layer self-assembled multilayer films of sulfonated-β-cyclodextrin and its reversible adsorption of methyl orange
Authors: Qian Yan , Pei Fangyu , Kong Xiangmei , Zhi Junge 
Published: July 2020

Abstract
Multilayer film based on photosensitive p-diphenyl diazonium salt (biPh-N2+) and sulfonated-β-cyclodextrin (S-β-CD) were fabricated by layer-by-layer self-assembly. The ionic bonds formed between diazonium salt and sulfonic acid ion in the multilayer film converted to covalent bonds and formed stable ultra-thin film when the diazonium groups decomposed under UV light irradiation. Meanwhile, the concentration of S-β-CD aqueous solution can influence the self-assembled multilayer films, while the pH value (pH=3~9) had little effect on the self-assembled process except the strong alkaline solution (pH=11). Moreover, based on the electrostatic interactions of S-β-CD and MO to form a host-guest complexation, the multilayer film of (biPh-N2+/S-β-CD)12 can absorb methyl orange (MO), and which can release reversibly in ethanol.
Study on synergistic effect of removal of nitrogen and phosphorus by mixed modified zeolite
Authors: Zhou Bingling , Zhang Chunyu , Li Zaiguo , Li Cuihua 
Published: July 2020

Abstract
Sodium chloride-modified zeolite Z-Na for the removal of ammonia nitrogen and lanthanum-modified zeolite Z-La for the removal of phosphorus were prepared by sodium chloride modification and lanthanum chloride modification. Through adsorption kinetics and isotherm model fitting, the synergistic effect of pollutants in the removal of ammonia nitrogen and phosphorus by these two zeolites was explored. The results show that in the case of composite pollutants, the presence of phosphorus can inhibit the adsorption of ammonia nitrogen by Z-Na, (the adsorption rate is reduced from 2.3840ℎ−1 to 1.3442ℎ−1, and the maximum adsorption capacity is 13.6612mg / g reduced to 11.8906mg / g);the presence of ammonia nitrogen will promote the adsorption of phosphorus by Z-La (adsorption rate increased from 1.0623ℎ−1 to 4.8595ℎ−1, while the maximum adsorption capacity is almost unchanged).
Using Hilbert-Huang Transform to Process and Analyze the Corrosion Acoustic Emission Signal of the Tank Bottom Plate
Authors: Jiang Wenxin , Gao Ke , He Zhi , Pan Meng , Zhang Shijie 
Published: July 2020

Abstract
In this article, Hilbert-Huang transform (HHT) is applied to the tank bottom corrosion acoustic emission signal de-noising processing and decomposition, the effective signals are explored and extracted, and a new method of noise reduction for acoustic emission signal is proposed. The acoustic emission signal of corrosion of tank bottom plate is processed and decomposed by Hilbert-Huang transform, and the energy ratio of each sub-signal in the original signal is calculated, the source data of each sub-signal is extracted, and the effective acoustic emission signal in the original signal is extracted. Using the calculation formula of acoustic emission amplitude, the amplitude of each sub-signal is calculated respectively. The results show that the amplitude of each sub-signal is smaller than that of the original signal. This method can be used to reduce noise and extract effective acoustic emission signals. And it provides the foundation support, to form the method of noise reduction processing and effective signal extraction for corrosion acoustic emission signal on the tank bottom plate. It has some application value to improve the accuracy of the evaluation results of the corrosion state of the tank bottom plate.
Research on high power servo turning control
Authors: Chen Hua-Feng 
Published: July 2020

Abstract
The paper studies the turning control of high power servo system, using variable structure control method, for constant acceleration constant deceleration control and according to kinematics theory, two control methods related to time and error are proposed. Through analyzing the characteristics of high power servo system, combine the torque relationship between the braking angle and the turning control, an accelerated guidance control method is proposed.
Experimental Study on Flexural Property of Precast Cavity Concrete Sandwich Wall Panels
Authors: Yang Xintian , Liu Hui , Cheng Weiyang 
Published: July 2020

AbstractThe sandwich wall panel studied in this article is prepared by setting a cavity between the outer cavity wall body and thermal insulation layer, which is connected by FRP rod connectors. Through the out-of-plane flexural test, the crack development rule is recorded, and the load deformation rule is recorded under serviceability limit state and limit state of bearing capacity. The analysis results can provide reference for the design of precast sandwich wall panels with cavities.
Research on multi-core DSP cooperative control system in environmental protection equipment
Authors: Chen Dali , Hua Xuehui 
Published: July 2020

Abstract
Traditional multi-servo motor control systems have the problems of poor output stability in environmental protection equipment, weak robustness, and low control ability. Based on this, the research of multi-servo motors control systems based on FPGA are proposed. The paper Construct a parameter distribution models on multi-servo motor control, using motor terminal voltage, current, and back-EMF as control constraints, calculate the difference between the output currents of the multi-servo motors, and construct a saturation function to analyze the multi-servo motor control objective function. Sampling phase current signal and PWM duty cycle as modulation parameters, combined with fuzzy adaptive PID control method to control the output robustness of multiple servo motors, calculating the equivalent mechanical power and equivalent electromagnetic power of multiple servo motors. The optimized parameter adjustment method performs self-tuning processing of the motor output, and the transient stability adjustment of the multi-servo motor is performed based on the method of the average terminal voltage analysis to realize the optimal design of the multi-servo motor control law. The test results show that the output stability of the output of the multi-servo motor control system using this method is better, the motor control is more robust and the control ability is higher.
Study on Mechanical Properties of Recycled Concrete Block Mixed with Coal Gangue and Plant Fiber
Authors: Hu Quanquan , Fang Guangxiu 
Published: July 2020

Abstract
In this paper, the recycled aggregates of waste coal gangue and waste concrete crushed by a crusher are used as coarse aggregates, mixed with plant fibers. By changing the mixing rate of plant fibers and coal gangue, the mix design of plant fiber recycled concrete and experiment. According to the compressive strength values of 7d, 14d and 28d concrete, the optimal mix ratio is selected. Correct the calculated value of the compressive strength bearing capacity according to the specific strength value of the plant fiber concrete and ordinary concrete obtained by the test, and obtain the correction coefficient k. According to the best mix ratio, the plant fiber recycled concrete hollow block was designed, and its compressive strength was analyzed by ANSYS finite element. In this paper, the recycled aggregates of waste coal gangue and waste concrete crushed by a crusher are used as coarse aggregates, mixed with plant fibers.
Structure design and analysis of a training track for Bobsleigh-and luge
Authors: Zhang Xiaomeng , Ren Qingying , Liu Wenting , Wang Ying , Zhou Yilun , Gao Xing 
Published: July 2020

Abstract
The construction area of bobsleigh and sled training ground is 10000 square meters. Shear wall structure is below the ground, steel frame structure is above the ground, strip foundation is adopted for the foundation, this paper introduces and analyzes some difficult points of the complex structure in the project, and through the research on the mechanical performance of the structure system and the stress analysis of the key points, the mechanical performance of the structure is studied to ensure the safety and reliability of the construction.