bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comprehensive utilization of paigeite greening and efficient
Authors: Zhang Zexi , Yang Yanchun , Lv Xiaoshu , Wang Xiyao 
Published: March 2021

Abstract
In the paper, according to the chemical composition of paigeite and mineral structure, designing a clean, efficient and comprehensive utilization process. Through roasting paigeite with ammonium sulfate, magnesium, iron, aluminum, boron in paigeite changes into water soluble products, silicon exists in the form of silica, insoluble in water. Roasting product is dissolved by water, filtration. The magnesium, iron, aluminum and boron are separated from silicon dioxide. Magnesium, iron, aluminum, boron is formed precipitation on the difference value of pH, adding alkaline material such as NH3 solution to adjust the pH value of solution, such as magnesium, iron, aluminum, boron fractional precipitation and separation. Sulfuric acid root into ammonium sulfate, evaporation crystallization returned after roasting. Chemical raw materials recycling.
Gypsum Boards Reinforced with Cotton Dust Fiber
Authors: Khorjitmate Sujira , Miyata Ken , Kwankhao Bintasan , Sukpancharoen Somboon 
Published: March 2021

Abstract
This research was aimed to study the production of gypsum boards mixed with cotton dust fiber for construction purposes. The cotton dust fiber 5, 10, 15, and 20% by weight was mixed with gypsum plaster and cast in the size 300 × 400 × 9 cubic millimeters. The water content was added 77 % by weight of the mixture. The ultimate strength, modulus of rupture, and weight of the gypsum board were investigated. The results showed that the ultimate strength and modulus of rupture of the gypsum boards without cotton dust fiber were 168.78 Newton and 3.66 Mega Pascal, respectively, which met the criteria for standard gypsum board under TIS 219-2524. However, the ultimate strength and modulus of rupture of the gypsum board mixed with cotton dust fiber were lower than the standard gypsum board. The weight of the gypsum board was decreased when the cotton dust fiber content was increased. It was found that the appropriate ratio of gypsum plaster and cotton dust was 90:10 incorporated with 6 wt. % PVA. The ultimate strength and modulus of rupture of the appropriate gypsum board were 135.31 N and 3.13 MPa, which was the criteria standard gypsum board products (TIS. 219-2524). The weight of the appropriate gypsum board was lighter than the gypsum board without cotton dust fiber addition about 289.75 grams (21 percent). Therefore the gypsum board mixed with cotton dust fiber could be developed for the construction, ceiling, and wall.
Effect of Controlled Cold-Controlled Rolling Process on Properties of Q550D Steel Plate
Authors: Li Junsuo , Liu Yanxia , Wang Yang , Dong Zhongqi 
Published: March 2021

Abstract
It is used that method for controlling the point of the process to component control and TMCP rolling in order to study the key factors controlling the performance of TMCP Q550D plate and improve the comprehensive qualification rate of TMCP state Q550D. Results show: the content of C, the cooling temperature, the temperature uniformity and the water temperature are the key components of the TMCP state performance of Q550D. The TMCP state Q550D has good welding performance and low yield strength ratio after the control process. The qualified rate of TMCP state has been increased to 90%, saving a lot of tempering process.
Mechanism of Kaempferol in Anti-inflammation Based on Network Pharmacology
Authors: Qin Ping , Wu Hongmei 
Published: March 2021

Abstract
To explore the mechanism of kaempferol in treatment of anti-inflammation based on network pharmacology. The chemical ingredient targets of kaempferol were obtained from Traditional Chinese Medicine Systems Pharmacology Database (TCMSP). The predicted targets related to predicted targets related to inflammation were obtained from GeneCards database. The prediction target of kaempferol was mapped with the target of inflammation to get the prediction target of kaempferol to anti-inflammatory. Cytoscape 3.7.1 software was used to draw the kaempferol targeted-anti-inflammatory targets network. Protein interaction network was made through STRING database. GO and KEGG were analyzed by the “ClueGO” plug-in of Cytoscape 3.7.1 software. There were 61 targets for kaempferol, 3416 disease genes were obtained, and 50 same targets were found. Important targets were screened out, such as AKT1, TNF, PTGS2, GASP3, MAPK8, JUN and GASP3. KEGG signaling pathways was screened, and 20 signaling pathways were obtained, including TNF signaling pathway, IL-17 signaling pathway, Apoptosis, non-fatty liver disease (NAFLD), and so on. Kaempferol mainly acts on targets of AKT1, TNF, PTGS2, GASP3, MAPK8, JUN, GASP3 and other targets to inhibit inflammation through signaling pathways including TNF signaling pathway, IL-17 signaling pathway, Apoptosis, non-alcoholic fatty liver disease (NAFLD), etc.
The application of KMV model in China’s insurance market during the COVID-19
Authors: Zeng Zhisen , Zeng Huixian , Jiang Siqi 
Published: March 2021

Abstract
In 2020, the COVID-19 has a certain impact on the credit risk of China’s listed of insurance companies. This paper selects relevant data of four China’s listed insurance companies from the first quarter of 2019 to the third quarter of 2020, and then uses revised KMV model to measure the credit risk of these four insurance companies. The empirical results show that in the season of the outbreak, the default distance of China’s listed insurance companies has decreased to varying degrees, indicating that the epidemic has caused a temporary increase in the credit risk of the insurance industry.
Preliminary screening method of Escherichia coli in oral drugs by visual LAMP technology
Authors: Huang Xuchun , Zeng Chuanping , Niu Ling , Li Xiaotian , Chen Linzhu , Ma Guangqiang 
Published: March 2021

Abstract
According to Chinese Pharmacopoeia, Escherichia coli should not be detected in oral drugs. In this study, a visual LAMP method for rapid detection of Escherichia coli was developed to replace the traditional microbial limit test method. Methods Four specific primers (FIP, BiP, F3, B3) for loop mediated isothermal amplification were designed by using uidA gene of Escherichia coli, and calcein-Mn2+ dye was added to the system to establish a visual loop mediated isothermal amplification detection method for Escherichia coli Finally, the visual LAMP system was used to detect the presence of E.coli and the sensitivity of the system in drugs. Results The specificity of the optimized system was good, using this system to detect 10 different strains, the results showed that only Escherichia coli genome appeared, the system turned green, the other systems were brown yellow; the detection limit of gradient dilution Escherichia coli was 102 CFU/mL by LAMP. Visual LAMP was used to detect the oral drugs sold in the market and not passed the test of the drug administration, and no E.coli was detected, but the oral drugs that were artificially contaminated with E.coli were visualized by LAMP. The color detection limit of the system in oral drugs was 1.8×102 CFU/mL. Conclusion The visual LAMP detection system can be used for the preliminary detection of oral drugs containing Escherichia coli.
Research status and trends of soil pollution from 1999 to 2018
Authors: Dan Wu 
Published: March 2021

Abstract
In order to understand the global research status and development trend in the field of soil pollution remediation, this paper, based on the Web of Science (WOS) database, conducted a statistical analysis of the SCI papers in this field from 1999 to 2018 through bibliometric method, and quantitatively explored the development and change trend of the topic in this field.It was found that the number of papers published in the field of soil remediation in the world showed a linear growth trend with each year, while the number of papers published in China showed an exponential growth trend with each year, indicating that China pays more and more attention to this field.
Dust Monitoring and Processing System Based on Stepped Distributed Algorithm
Authors: Zhang Pei , Ma Xiaolin , Zhang Lihui , Guo Zeyu 
Published: March 2021

Abstract
With the rapid development of modern industry, productive dust is almost everywhere in factories, becoming a major hidden danger to industrial production safety. This project will realize real-time monitoring of factory dust, automatic dust removal, and human-computer interaction. Users can set the dust concentration threshold by themselves. The sensor will monitor the dust concentration in real time and upload the processed data to the cloud platform. If it exceeds the preset Threshold value, the nearby dust removal equipment is activated to remove dust in time. In this paper, for the monitoring and dust removal control of dust concentration in the air, the ladder distributed algorithm is used to save energy under the premise of achieving the dust removal function.
Evaluation and Recommendation System for Climate Migration Policy Based on Comprehensive Model
Authors: Yu Jiaqi 
Published: March 2021

Abstract
With the acceleration of industrialization and the rapid development of the global economy, carbon emissions are also increasing. With the global warming and rising sea levels, countless island nations are facing the risk of submerged land and residents on the island becoming EDPs. In order to provide new residences for EDPs, we will provide corresponding analysis recommendations.
Study on Adaptability of Different Asphalt Materials to Large Stone Porous Asphalt Mixture
Authors: Bao Qunqun , Chen Weidong , Liu Xiaoxia , Yang Fei 
Published: March 2021

Abstract
In order to explore the adaptability of different asphalt materials to the Large stone porous asphalt mixture, this paper respectively carried out four different binder technical indicators testing, lspm-30 mixture design and mixture performance testing. The research shows that rubber asphalt, SBS modified asphalt and MAC modified asphalt can be used as the binder of the Large stone porous asphalt mixture.
Research progress on indoor formaldehyde pollution and its influencing factors in China, a Review
Authors: Zhang Bin , Hu Xi , Zhang Yanyuan , Gao Yueyi , Wang Xiaoming , Jiang Jun , He Gangfeng , Chen Yan , Zhang Chunyan , Sun Jiajia , Wu Fei 
Published: March 2021

Abstract
China’s economic development accelerates the process of urbanization, accompanied by formaldehyde pollution in indoor environment. we summarized the recent research on the pollution and impact factor of indoor formaldehyde in China, and elaborated the shortcomings of the existing research and the future research direction from the perspective of source emission, environmental fate and human health effects.
Influence of Carbon Black on Aging Properties of Natural Rubber
Authors: Li Yi , Zhu Pengxiao , Wen Jun , Zhang Qiong , Yin Long 
Published: March 2021

Abstract
The influence of carbon black on the aging properties of NR was studied by adding different grades and contents of carbon black. The results show that the hardness, tensile strength and tear strength of NR increased with the increase of carbon black level and content, while the elongation at break and Akron abrasion decreased. After hot air accelerated aging and ultraviolet aging, the tensile strength, elongation at break and Akron abrasion of NR decreased, the tear strength first decreased and then increased, and the shore hardness gradually increased. With the increase of carbon black grade and quantity, the change rate of natural rubber aging properties, such as shore hardness, tensile strength, elongation at break, tear strength and Akron abrasion, became smaller and smaller.
Study on the evaporation characterization of dropwise water and DMMP in the plasma atmosphere
Authors: Xu Xinyan 
Published: March 2021

Abstract
Chemical warfare agents are extremely lethal. There has been a lot of related research conducted since World War II. This article takes dropwise water and DMMP (Dimethyl methylphosphonate, Sarin’s simulation reagent) as the research objects. By analyzing the data from the infrared band and visible light band, the evaporation features of water and DMMP in different plasma atmospheres (manipulated via setting different voltage and frequency). This work will, to a certain degree, provide experimental references for subsequent research on plasma decontamination of chemical warfare agents.
The Degradation Kinetics Model of Apricot during HA Drying
Authors: Yang Jiapeng , Yan Shengkun , Kong Na 
Published: March 2021

Abstract
The browning index and carotenoid studies were carried out durning HA drying process. The effect s different HA drying temperature(40 °C, 50 °C, 60 °C, 40 °C (10 h)→60 °C(end), 50 °C(10 h)→60 °C(end), 40 °C(10 h)→50 °C(10 h)→60 °C(end)) and air velocities(2 m/s, 3 m/s, 4 m/s) on colour and carotenoid of apricot were studied. Meanwhile a HA drying degradation model was established. The test showed that the BI value increased and carotenoid content reduced with the passing of the processing time during the drying process. The browning action durning the HA drying process was fit according to the zero and first-order reaction model. Furthermore, the activation energy was obtained by the Arrhenius equation, which was 17.59 kJ/mol. This research provided the theoretical basis for the quality control of dried apricot slice.
Based on Bibliometric Analysis of Saline Alkali Soil Improvement Technology Research Status and Hot Spot Analysis
Authors: Lu Nan , Li Gang , Luo Yuhu 
Published: March 2021

Abstract
Saline alkali soil is a common form of soil degradation. Soil salinization is an important factor restricting the sustainable development of agriculture in irrigated agricultural areas in the world. Soil salinization improvement materials and technologies have always been a research hotspot. Based on the data source of CNKI, through setting key search words and years, searching relevant literature and patents, using bibliometric method, and drawing and tabulating tools such as origin and excel, the data were statistically analyzed. The results showed that the literature related to saline alkali land improvement technology was first published in 1957, and then increased year by year. Ningxia University was the institution that publishes the largest number of related scientific and technological papers. Wei Kunfeng, from Dezhou saline alkali soil greening Research Institute of Shandong Province, was the researcher with the largest number of related scientific and technological papers. Most of them belong to the field of Engineering Technology (nature). Most of the papers were supported by National Natural Science Foundation, National Science and technology support plan and other national fund projects Ningxia Hui Autonomous Region holds the most published papers.
Effect of pH on the Interaction of Major Phenolic Compounds in Apple Juice with Gliadin
Authors: Xi Pushun , Zhu Danshi , Shen Yusi , Fu Hao , Cai Tian , Zhou Dayu , Liu He 
Published: March 2021

Abstract
The effect of interactions between polyphenolic substances (Chlorogenic acid, epicatechin and gallic acid) and gliadin under different pH (pH 3.8/7.0) were analyzed by fluorescence spectrum. The results showed that adding polyphenols could induce static fluorescence quenching of gliadin solution at pH 3.8 and 7.0. Fluorescence quenching spectrum of chlorogenic acid-gliadin complex at pH 3.8 presented a red shift toward long wave, while other phenols spectra showed blue shifts toward the short wave. The binding ability showed a significant difference between acid condition and neutral condition, and the quenching constants (Kq and KSV) of all three polyphenols at pH 3.8 were lager than pH 7.0. Compared to epicatechin and gallic acid, pH value had a marked effect on binding ability of chlorogenic acid with gliadin.
Effect of Sample Tilt on Indentation and Scratch Behavior of Single Crystal Copper
Authors: Zhong Yuexi , Li Mingda , Ji Bingkui 
Published: March 2021

Abstract
Inclined factors bring a lot of errors to indentation and scratch experiments. The aim of this paper is to investigate the effect of sample tilt on indentation and scratch behavior of single crystal copper. Angled indentation and scratching experiments were conducted on the flat of 5°,10°,15° and 30°, and spherical-conical indenter was used to study the effect. In scratching simulation with SPH method, normal and lateral forces during scratching process increased when tilt. Contrary to simulation result, when contact depth was held as a constant, the forces declined as tilt angle increased. In geometry model, the actual indentation depth was less than the theoretical contact depth and the projected area of the tilt indenter was an enclosed area like an elapse with two circular arcs. Residual impression images of indentation and scratching indicated that not only the sphere section of the tip of indenter, but also the conical surface penetrated into sample and squeezed a slope. The results showed that the size of spherical-conical indenter has significant effects on the size and shape of wear debris and could not be neglected during indentation and scratching tests with sample tilt.
Preparation and mechanical properties of powder metallurgy Ti-3Al-2.5V alloy
Authors: Zhu Wenyu , Lei Peng , Ma Guangyu , Cheng Tuo , Ivasishin O. M. 
Published: March 2021

Abstract
Using TiH2 powder, Al-V alloy powder and V powder as raw materials, Ti-3Al-2.5V alloy was prepared by ordinary pressing and vacuum sintering, and the structure and mechanical properties of the alloy were studied. The results show that the powder metallurgy Ti-3Al-2.5V alloy is a near-α type alloy, with a relative density of about 98%. The data of tensile strength, yield strength and elongation are more prominent, and the key performance reaches forged Ti -3Al-2.5V alloy level.
The Effect of Process Parameters on Stewed Beef
Authors: Cheng Xuexun , Liu Qiaoyu , Chen Haiguang , Huang Min , Wu Juxian , Luo Xingxie 
Published: March 2021

Abstract
To explore the application of stewing technique on the qualities and yields of stewed beef, the effect of process parameters, including solid-liquid ratio, time and temperature on the contents of major compounds, sensory ratings, color, PTA textural attributes and products yields were analyzed. The higher qualities was obtained when beef was stewed at 95°C, 150 min with solid-liquid ration 1:2.0, including high content of amino nitrogen and water-soluble protein, medium content of Nacl, high assessment about color and PTA texture, as well as the best sense.
Study on fatigue life model of “goose-neck” type slip ring
Authors: Liu Ming , Meng Lixin , Zhang Lizhong 
Published: March 2021

Abstract
In view of the problem that it is difficult to predict the fatigue life of the “goose-neck” type slip ring, through the analysis of the working principle and the movement force of the slip ring, it is found that the main failure mode of the slip ring is the FPC conductor layer fracture, the failure position is at the junction of the FPC (inner ring) and the FPC (goose-neck). The fatigue life prediction model of slip ring is established by energy method, the analysis of the model shows that the fatigue life of slip ring decreases with the increase of the rotation angle of the inner ring, the radius ratio of the slip ring inner ring to the slip ring outer ring and the thickness of FPC conductor layer.
Final Prediction of Product Quality in Batch Process based on Bidirectional Neural Network Algorithm
Authors: Li Wanshui , Wang Xiang , Feng Qianyuan 
Published: March 2021

Abstract
Based on the analysis of time series characteristics of production process based on common batch process end point quality prediction a predictive model based on bidirectional gated loop neural network is proposed to predict final product quality for unequal interval batch processes. Based on the requirement of forecasting value in actual production, loss function adapted to batch process is constructed, which makes model meet forecasting requirement under guarantee prediction precision, thus obtaining greater production benefit. Two-way gated loop (GRU) neural networks with different loss functions are compared with multi-directional partial least squares (MPLS) neural networks support vector regression SVR and gated cyclic unit neural networks. Results show that bidirectional gated loop neural networks have stronger applicability and higher accuracy.
Research Progress on Driving Factors of Species Diversity of Grassland Insects
Authors: Yang Long , Chen Chao 
Published: March 2021

Abstract
Insect species diversity is an important part of biodiversity in grassland ecosystems and a key link in the food chain. It plays an important role in maintaining the function and stability of grassland ecosystems. Studies have shown that grassland insect species diversity is closely related to grazing (strength, combination), climate (light, temperature, precipitation, atmosphere), plant diversity (type, height, coverage, biomass), but The specific mechanisms of grazing, climate, and plant diversity affecting grassland insect species diversity are not clear, especially how different grazing intensity and different grazing combinations drive insect diversity, and how specific grazing mechanisms affect insect species diversity have not been resolved. Moreover, there are few reports on the specific mechanisms of the effects of climate and plant diversity on insect species diversity. This paper collected and compiled 906 research papers on grassland insect species diversity and its driving factors at home and abroad, which is the future grassland insect species diversity. The research pointed out the direction and further explored the changes of grassland insect species diversity under the influence of grazing, climate, vegetation community and other driving factors in grassland ecosystem, and revealed for the first time the “grazing-plant-soil-grass insects” in grassland ecosystems. The interaction between the two.
Graphene@activated carbon modified electrode for electrochemical behavior analysis of quercetin
Authors: Wan Guan , Dong Longyun 
Published: March 2021

Abstract
In this paper, graphene (Gr) and coconut shell activated carbon (AC) modified electrode was developed for electrochemical behavior analysis of quercetin. Porous AC was prepared from coconut shell. The Gr was obtained by electrodeposition of graphite oxide on AC surface. The electrochemical behavior of quercetin was analyzed by Gr@AC electrode, and results show that the detection range of quercetin is 6 μmol/L to 100 μmol/L (R2=0.9977). The detection limit (LOD) is 0.5 nmol/L (3σ/slope), and the recommended method has a good recovery for the detection of quercetin in real urine.