bluuebunny/crossref_metadata_2025_split huggingface dataset:
Carbon Aerogels Preparation With Kaolin addition
Authors: Xu Yuelong , Ren Bin , Liu Zhenfa 
Published: October 2020

Abstract
Wet gels (WGs) have been obtained from the polymerization of phloroglucinol (P), resorcinol (R) and formaldehyde (F) using sodium carbonate (C) as catalyst with kaolin (KL) addition. Carbon aerogels (CAs) have been gotten through the carbonization of WGs. The porous texture properties of as - prepared samples are investigated using the surface-area analyzer. The crystal structure of CAs are studied by X-ray diffraction (XRD) and the degree of graphitization are obtained through a Raman spectrometer. Meanwhile scanning electron microscopy (SEM) are executed to observe the morphology of different samples. When the addition of 5 wt%, the samples exhibit the high specific surface area (SSA), up to 855m2 g–1, with a concentrated pore size disdribution (PSD) of 30 nm.
INFLUENCE of ELECTRIC FIELD on STRUCTURE and PROPERTIES of TERNARY CARBONATE MOLTEN SALT
Authors: Zhu Chuang , Gong Li 
Published: October 2020

Abstract
Molten salt is one of the important heat storage materials in the field of solar thermal utilization, and nanoparticles can improve partial thermal properties of molten salt. To investigate whether nanoparticles with charge can affect the structure of molten salt ions, the micro electric field of nanoparticles was replaced by applied electric field and the liquid Li2CO3- Na2CO3-K2CO3 was solidified in the electric field. DSC was used to determine the phase change temperatures and latent heat, and thermal stability was analyzed by TG curve. At last, the microstructures of molten salt were analyzed by SEM. Results show that the applied electric field can reduce the starting and ending temperatures of the carbonate by about 10°C as well as the latent heat. The mass loss rates of molten salt samples at the positive and negative plates are 1.44% and 0.81% respectively at 700°, and these samples have higher thermal stability than normal molten salt. The applied electric field can produce new microstructure of molten salt near positive and negative plates.
Application of surfactant in oilfield development
Authors: Cui Shizhang , Wang Pengzhen , Zheng Zhiwei , Zhang Xu 
Published: October 2020

Abstract
With the rapid growth of the global economy, China’s economy is also rapid development, and the demand for crude oil in various countries is geometric multiple growth, domestic demand far exceeds the progress of domestic mining. The security of the domestic economy will suffer as crude oil prices rise. The increase of mining rate should be strengthened on the domestic baseline, using physical, biological and chemical technology support, three mining. The recovery of crude oil was increased to 80.0%-85.0% with high-dose polymer and surfactant.
Growth and metabolism of an aerobic thermophilic Geobacillus strain under simulated composite extreme reservoir conditions
Authors: Wang Junqi , Kong Xiangping 
Published: October 2020

Abstract
The growth and metabolism of an aerobic thermophilic Geobacillus strain DM-2 under simulated composite extreme conditions of the Ng3, Gudao Block, Shengli Oilfield (China) with sufficient oxygen and nutrition were investigated. The experimental device for simultaneously simulating the temperature, pressure, salinity, porosity, permeability, fluid characteristics and development status of the target reservoir was designed, where the air assisted flooding technology was used. Particularly, the oxygen demand was estimated according to biotic and abiotic oxygen consumption. Despite the relatively lower rates of microbial growth and metabolism, the strain was able to grow under these conditions with the cell density increased from 106 to 108 cellsmL−1, and CH3COO− produced at the concentration of about 400 mg ⋅ L−1. Aerobic microorganisms, such as Geobacillus sp., may be promising candidates for microbial enhanced oil recovery and oily sewage treatment technology.
A New Type of Gelled Foam Plugging Agent with Resistance to Temperature, Salt and Dilution
Authors: Li Yuan , Dai Caili , Wu Yining , Wang Ruoyu 
Published: October 2020

Abstract
The conventional foam plugging agent is susceptible to factors such as dilution of formation water, high temperature and high salinity, which usually shortens its effective period and undermine its application. Based on conventional foam plugging agents, an anti-dilution gelled foam plugging agent suitable for oil reservoirs with high temperature and high salinity is proposed in this paper. The research results show that the density of the gelled foam plugging agent (0.6∼0.9 g/cm3) is controllable and easy to prepare, and it can be stabilized at 130° and 2.2 × 105mg/L mineralization for at least 72 h. The indoor physical simulation experiments show that the plugging rate of gelled foam plugging agent is more than 98%, and the plugging effect is obvious, showing a good channeling plugging capability.
Comparison of Cyclosporin A and Tacrolimus in the Field of Organ Transplantation
Authors: Wen Ruixuan 
Published: October 2020

Abstract
Organ rejection occurs when a patient’s immune system recognizes transplanted organ as foreign, initiating immune responses that ultimately destroys the transplant. Since organ transplantation is offered only after all the other treatments have failed, the rejection is hence fatal and requires immediate medical treatment. As a solution, immunosuppressive drugs are widely used to treat organ rejection. Calcineurin inhibitors (CNIs), a kind of non-depleting agents including but not limited to Cyclosporin A (CsA) and Tacrolimus (FK506), prevent T- cell activity intracellularly through inhibiting cytokine expression and T-cell proliferation. By comparing the structure, mechanism and application of Cyclosporin A and Tacrolimus, not only organ rejection can be better understood, the two immunosuppressant can be better evaluated and studied.
Isolation and Identification of Lactic Acid Bacteria from Koumiss in Xinjiang, China
Authors: Zhou Haiyan , Wu Linrong , Hu Pan , Zhao Xin , Liu Bihui 
Published: October 2020

Abstract
Koumiss is a traditional fermented drink in Xinjiang, which is rich in microorganisms. In this study, seven strains of lactic acid bacteria were isolated and identified from Xinjiang homemade koumiss by traditional separation culture method, Gram staining method and 16s rDNA sequencing analysis. The observation of colonial morphology showed that seven isolates mostly round milky white with convex surfaces, and the results of gram staining showed that all seven isolates were gram-positive. The isolates were considered to be Enterococcus sp., Streptococcus gallolyticus, Lactobacillus fermentum, Lactobacillus delbrueckii subsp. Bulgaricus, Lactobacillus fermentum, Bacillus cereus and Enterococcus durans separately through 16s rDNA sequencing analysis. These results can provide scientific basis for the diversity of lactic acid bacteria in dairy products in Xinjiang, and provide theoretical support for the development of lactic acid bacteria food.
The Isolation and Identification of Lactobacillus from Naturally Fermented Yoghurt
Authors: Wu Ya , Wu Dongdong , Liu Danyan , Chen Juling , Zhao Xin 
Published: October 2020

Abstract
Lactic acid bacteria were isolated from natural fermented yoghurt by traditional isolation and culture method, and identified by gram staining and 16S rDNA sequencing analysis. The results showed that 5 strains of lactic acid bacteria were obtained, which were X22-1, X22- 2, X22-3, X22-4 and X40-1. After 16S rDNA sequencing, X22-1, X22-3, X40-1 were Lactobacillus fermentans, X22-2 and X22-4 were Lactobacillus delbrueckii subsp. Bulgaricus.
The Study on Extraction Technology of Flavonoids from Tribute Citru Peel
Authors: Wu Ya , Hu Chengming , Chen Xinxing , Su Xiaofei , Zhao Xin 
Published: October 2020

Abstract

Tribute Citru peel is rich in various natural products. Total flavonoids from Tribute Citru peel were extracted by solvent extraction method and the content of total flavonoids was determined by UV spectrophotometer with rutin as standard. The effects of reflux time, solidliquid ratio, ethanol concentration and temperature on the extraction of flavonoids were investigated. The optimum condition determined by orthogonal test was that Tribute Citru peel and 80% ethanol were mixed in the solid-liquid ratio of 1:20, then heated for 4h at 90 °C. Under this condition, the extraction rate yield of flavonoids reached 1.43%.
Hydrogen sulfide biological removal efficiency by vermicompost horizontal biofilter
Authors: Tian Weiping , Chen Xuemin , Zhou Peng , Fu Xiaoyong 
Published: October 2020

Abstract
To efficiently treat hydrogen sulfide (H2S) from contaminated air, we designed a fixed carrier horizontal biofilter. The biofilter system was packed with vermicompost as baffle plate. The inlet concentration and the thickness of media on the removal efficiency were studied. Furthermore, a final product analysis and the macro-kinetics of bio-degradation were also evaluated. The results showed that the horizontal biofilter can be started quickly, favorable removal efficiencies of H2S were proved and reached nearly100% when the inlet concentration lower than 350 mg m−3. The thickness of vermicompost affected the H2S removal efficiency. It was found that the nutrient elements of vermicompost increased, especially the sulfur increased significantly. In addition, in kinetic analysis, the semi-saturation constant and maximum removal rate of H2S were calculated to be 417.1 mg m−3 and 1428.6 g m−3 d−1. The results presented in this study the horizontal vermicompost biofilter was effective for removing H2S contaminated air, and will be valuable for further research and engineering applications.
Enhancement of antioxidant effect of pitaya by lactic acid bacteria fermentation
Authors: Gan Yi , Long Xingyao , Zhou Xianrong , Mu Jianfei , Zhao Xin 
Published: October 2020

Abstract
Pitaya has received a great deal of consumer interest for its large amount of micronutritions. This study investigated the changes of total phenols and total flavonoids of fermented pitaya, as well as the antioxidant abilities. The results showed that fermentation could significantly increase the counts of water-soluble phenols and flavonoids. After being fermented for 24h, the DPPH free radical, hydroxyl radical and superoxide anion scavenging ability raised significantly. Reducing power of fermented pitaya also increased remarkably. Thus, fermentation could increase the antioxidant ability of pitaya, and could be a potential process for pitaya products.
Water Susceptibility and Raveling Resistance of Polyurethane Mixture
Authors: Zhong Ke , Zhang Meng , Sun Mingzhi , Sun Shengkai , Wang Xue 
Published: October 2020

Abstract
The amount of different rubber particles has a certain influence on the water stability and raveling resistance of polyurethane mixture. The more rubber particles are, the better the water stability and raveling resistance. Different grades have a certain influence on the water stability and raveling resistance. The addition of fine aggregate is conducive to improving the water stability of polyurethane mixture. Different kinds of polyurethane binders can change the polyurethane Water stability and raveling resistance of the mixture.
Study on Extraction Process of Polyphenols from Actinidia
Authors: Yanping Wang , Yanyan Liu 
Published: October 2020

Abstract
To study the optimum extraction conditions of polyphenols in actinidia. The extraction rate of polyphenols was used as the inspection index. Single factor test and orthogonal experiment were used to study the effect of the type and volume fraction of organic solvents, extraction temperature, extraction time and solid-liquid ratio on the extraction rate of polyphenols from kiwifruit. [Result] The optimum extraction process was as follows: methanol volume fraction was 60%, extraction time was 30 min, extraction temperature was 60 °C, solid-liquid ratio was 1:3, the extraction rate of polyphenols in kiwifruit was 35.7%.The process is stable and feasible, which can provide basis for the development and application of polyphenols in kiwifruit.
The improvement effect of LiF on stability of Li anode in PVDF-HFP gel polymer electrolyte
Authors: Yang Lei , Guo Xingming , Yao Ying , Zhang Cunzhong 
Published: October 2020

Abstract
The porous composite polymer membranes, based on poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) polymer matrix and lithium fluoride (LiF) inorganic additive, were prepared by phase inversion method and gel polymer electrolytes (GPEs) were obtained by immersing membranes into liquid electrolyte. GPEs containing LiF additive exhibited a high ionic conductivity of 1.10 × 10−3 S cm−1 and a high lithium ion transference number of 0.65 because of the lower crystallinity degree of GPEs. Moreover, we disclosed distinct merits including enhanced migration of Li+ and suppressed Li-ion concentration gradient in GPE near the surface of Li electrode. These merits ameliorated electrochemical performance of Li metal anode by retarding Li dendrite. LiF-GPEs effectively improved the cyclability and rate performance of symmetrical Li cells in a wide current densities rage. Pairing with LiFePO4 cathode, full cells containing LiF-GPEs showed excellent rate performance and cycling stability. This work effectively demonstrates that LiF-GPEs could suppress lithium dendrite by boosting electrochemical characters of mass transfer, and kinetic parameters.
Effects of Ultra-high Pressure Treatment on Aroma Components of Braised Mandarin Fish
Authors: Weiping Tao , Shiyi Wang , Wei Jiang 
Published: October 2020

Abstract
Ultra-high pressure technology is a new type of non-thermal food processing technology, which has the characteristics of low temperature, high quality, fast uniformity, energy saving and no pollution for food sterilization and inactivation of enzymes[1], at the same time, it is the best processing method that can keep the natural color, aroma, taste and nutrition of the food in the prior art. In this study, the effects of ultra-high pressure treatment on the aroma components of braised mandarin fish were studied. According to the experimental results, more alkanes were detected and accounted for a large proportion, which was the main substance affecting the flavor of mandarin fish.
Study on microbial diversity of fresh-cut potatoes in different storage periods
Authors: Kong Xiangzheng , Chang Xiguang , Feng Xiaoguang , Han Guicheng , Chen Xiangning 
Published: October 2020

Abstract
In order to extend the shelf life of fresh-cut potatoes, maintain their edible quality, and clarify the flora succession rules in fresh-cut potatoes during storage (4 ° C), this experiment uses PE film natural packaging, and high-throughput sequencing was used to study the On day 0, day 7, and day 14, the microbial diversity was high. The results showed that the dominant bacteria in the samples stored on days 0, 7, and 14 were mainly Pseudomonas, Pantoea, Erwinia, Bucher Buchnera. There is basically no difference in the diversity of microorganisms during different storage periods, but the abundance changes.
Novel gelatin/polyacrylonitrile thin film nanofibrous composite membranes with high filtration performance
Authors: Shen Ke , Wang Xuefen 
Published: October 2020

Abstract
High performance thin film nanofibrous composite (TFNC) membrane consisting of a thin gelatin (GE) selective skin layer and a polyacrylonitrile (PAN) nanofibrous substrate was fabricated in this work. Ultrathin GE nanofibers were electrospun and deposited onto the PAN nanofibrous supporting membranes and followed by moistening treatment and hot-pressing treatment. The moistened electrospun GE nanofibers would be melted and pressed into an integrated selective skin layer on the porous PAN nanofibrous membranes. The treated GE/PAN double-layer membranes were then chemically cross-linked by glutaraldehyde (GA). The depositing time of GE nanofibers was optimized to achieve a thin and integrated GE separating layer. The optimized GE/PAN TFNC membrane exhibited high flux (182.1 L m−2 h−1) and rejection (98.3%) in BSA test at 0.3 MPa. In addition, the GE/PAN composite membrane possessed great mechanical stabilities.
Performance test of self - made fast film detection all-in-one machine under different pressure
Authors: Guo Linyuan , Feng Shichun , Rong Yan , Peng Yunyan , Jin Dong 
Published: October 2020

Abstract
Ultrafiltration membrane can remove colloid, virus and large molecules of organic matter, but it does not have the ability to remove small molecules of organic matter and ionic pollutants, and the nanofiltration membrane can effectively remove organic matter and inorganic salts and other pollutants. However, the research and application of nanofiltration advanced water treatment technology are still few in China. In this experiment, ultrafiltration membrane was combined with nanofiltration membrane to make a rapid detection instrument. The instrument was used to test key performance indicators such as desalination rate and water flux under different pressures, which proved that the instrument could quickly detect related indicators of the membrane and its efficiency could be doubled.
Iron-cobalt bimetallic selenide as effective and durable catalyst for HER and OER
Authors: Zhou Yu , Yue Qin 
Published: October 2020

Abstract
As a way of energy conversion with zero carbon emission, water splitting plays a crucial role in the green and efficient energy utilization. Reasonable design of suitable catalysts for hydrogen evolution reaction and oxygen evolution reaction is conducive to the wideranging application of water splitting. Double metallic composite is superior to single-metal and non-metal materials due to the unique electronic configuration. In this work, we synthesized a Fe-Co-Se catalyst on carbon cloth (Fe-Co-Se/CC) for HER and OER. Fe-Co- Se/CC shows an overpotential of 131 mV@10 mA cm−2, 177 mV@100 mA cm−2 and 215 mV@500 mA cm−2 in 1.0 M HClO4 for HER and 300 mV@100 mA cm−2, 365 mV@500 mA cm−2 and 416 mV@1000 mA cm−2 in 1.0 M KOH for OER. Fe-Co-Se/CC also exhibits excellent stability in HER and OER measurements. This work demonstrates that Fe-Co-Se/CC is a promising candidate catalyst for water splitting.
The effects of four cadmium tolerant plant straws on the growth and cadmium content of jujube seedlings
Authors: Huang Zhenglian , Deng Qunxian 
Published: October 2020

Abstract
To study the effects of four cadmium-tolerant plant straws on the growth and cadmium content of Zizyphus acidojujuba seedlings, Zizyphus acidojujuba seedlings were planted in cadmium-contaminated soil (5mg ⋅ kg−1) with cadmium-tolerant plants straws such as Ranunculus sieboldii, Clinopodium confine, Plantago asistica and Mazus pumilus through pot experiments. Results showed that the biomass, photosynthetic pigment content, peroxidase (POD) activity and soluble protein content of Zizyphus acidojujuba seedlings could be improved by applying four kinds of plant straws with cadmium tolerance to cadmium-contaminated soil. At the same time, the catalase (CAT) activity in cadmium-contaminated soil was increased, the growth of Zizyphus acidojujuba seedlings was promoted, and the cadmium content in root and overground parts of Zizyphus acidojujuba seedlings was reduced. The cadmium transfer coefficient of Zizyphus acidojujuba seedlings could be increased by only applying the straw of the Clinopodium confine, while the cadmium transfer coefficient of Zizyphus acidojujuba seedlings could be reduced by all the other straw treatments Therefore, the four kinds of cadmium-tolerant plant straws are all suitable for the restoration of cadmium-polluted Zizyphus acidojujuba gardens, among which the Ranunculus sieboldii, Plantago asistica and Mazus pumilus straws are better.
The impermeability effect of soil air on the ponding infiltration experiment of soil column
Authors: Guo Qinghua 
Published: October 2020

Abstract
The agricultural flood irrigation in Jingyang South Platform, Shaanxi Province caused the rise of groundwater level, which induced a large number of loess landslides. The study of water movement in unsaturated loess under irrigation is the premise of revealing the mechanism of loess landslide. In this paper, the changes of matric suction, volume moisture content and air pressure with time at different depths of unsaturated undisturbed loess are measured by indoor soil column water infiltration test. Air pressure at each point of the soil rises to about 98 Pa in a short time after the test beginning, and keeps small fluctuation up and down during the test. At the end of the experiment, the air pressure at each point of the soil returns to zero in a short time after the upper water accumulation is eliminated. During the test, the change of infiltration rate has a significant corresponding relationship with the exhaust phenomenon at the top of the soil column, and the air resistance significantly reduces the infiltration rate of water.
Research on Displacement Failure Characteristics of Deep Roadway Surrounding Rock
Authors: Wang ZHonghua 
Published: October 2020

Abstract
In order to explore the displacement failure characteristics of deep roadway surrounding rock, the surrounding rock stress field model of the uniform stress field in the circular tunnel is simplified. It analyzes the stress evolution features of deep coal rock and discusses the mechanism of zonal disintegration. It observes the deep displacement surrounding rock of Qujiang mine n the depth of 1000m, the displacement shows that the wave crests and troughs appears alternately; wave crest position for damage area, trough part for non-damage zone. The surrounding rock of roadway exists zonal disintegration phenomenon, each roadway section is a total of four fracture zones. Due to different positions of roadway section tunnel excavation time rheological effect, the longer the tunnel is excavated, the more serious the surrounding rock is damaged.
Analysis of the index change laws of the B and C strips of Block A after well pattern infilling
Authors: Li Guoyi 
Published: October 2020

Abstract
After entering the ultra-high water cut stage, it is more and more difficult to tap the remaining oil potential, especially in the B and C strips because of the prominent contradictions between injection and production. It is difficult to adjust a injection well and get a good effect of well stimulation, so oil recovery is low. The index change laws are analyzed and summarized in two test areas of well pattern infilling, which can be used as a reference for the well pattern infilling and efficient development in the B and C strips.
A Hybrid Foresting Model for the Wind Energy based on Small World Optimization Algorithm and BP Neural Network
Authors: Li Chuyao , Zhang Runfeng 
Published: October 2020

Abstract
Wind energy is a clean and pollution-free renewable energy source, but it has the characteristics of randomness and intermittentness. Therefore, it is of great economic significance and practical value to study the high-precision wind power prediction model for accurately predict the power generation of wind farms. This paper use the small world optimization algorithm (SWOA) to optimize the selection of the weights and threshold of the BP neural network, so that it has the advantages of small errors and global optimization. Then we proposes an improved BP neural network model based on the small world optimization algorithm. Afterwards, the model was applied to wind power prediction in actual wind fields. The experiment results show that SWOA can quickly and accurately find the global optimal solution of the parameters of the BP neural network model, which can further improve the SWOA-BP model to obtain better prediction performance.