bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hypolipidemic Effects of Polysaccharides from Fermented Seaweed
Authors: Wang Zhongjian , Su Yue , Li Kunlun , Zhao Lin , Liu Xinli 
Published: October 2019

Abstract
To study the hypolipidemic effect of a fermented seaweed polysaccharide on experimental hyperlipidemic mice for Conducted a series of work. Algal polysaccharides can alleviate hyperlipidemia and decrease risks of atherosclerosis and cardiovascular diseases. This study aimed to investigate effects of algal polysaccharides fermented by Yeast and Lactobacillus plantarum on hematic fat level of mice fed with high fat diet. Forty mice were randomly assigned to four groups: normal control group (NC), high-fat control group (HFC), high concentration of seaweed polysaccharide (HSP), low concentration of seaweed polysaccharide (LSP), respectively. The NC group was fed with the basic diet, while the other groups were fed with high-fat diet. After the experimenta period (4W), mice were sacrificed by decapitation. Results demonstrated that fermented algal polysaccharides could regulate lipid levels, the increase in HDL-c and decrease in TG, TC and LDL-c. In conclusion, algal polysaccharides fermented by Yeast and Lactobacillus plantarum may has effect of hypolipidemic.
In Vitro Hypoglycemic Potential of Dietary Fiber From Fermented Seaweed
Authors: Zhou Lin , Zhao Lin , Su Yue , Li Kunlun 
Published: October 2019

Abstract
Dietary fiber can regulate metabolic activity of the body by affecting enzyme activity in the intestine. It cut down the speed of digestion to relieve the release of glucose, so blood sugar can be controlled in the optimal range. In this study, seaweed was used to prepare dietary fiber by microbial transformation of Lactobacillus rhamnosus and Lactobacillus plantarum. The experiment showed that the content of soluble dietary fiber (SDF) increased significantly after the action of the mixed lactic acid bacteria, and the increments rate was 21.1%. The inhibition rate of α-amylase and α-glucosidase increased by 25.9% and 16.6% respectively after fermentation. Therefore, after fermentation seaweed can enhance the soluble dietary fiber and improve inhibition rate of enzyme activity related to digestion. Dietary fiber of seaweed has potential of hypoglycemic.
Preparation and Mechanical Properties of Short Carbon Fiber Networks Reinforced Anionic Polymerized Nylon 6 Composites
Authors: Li Hongyu , Li Wei , Fei Youqing , Guo Wenxun 
Published: October 2019

Abstract
Short carbon fiber three-dimensional network reinforcement (SCFNR) was prepared by bonding two different lengths of short carbon fibers (SCF) with phenolic resin powder (PF), and then carbonized at 800 °C. Two kinds of SCFNR/anionic polyamide 6 (APA6) composites were fabricated via vacuum assisted impregnation process (VAI). The microstructures and mechanical properties of the composites were characterized by scanning electron microscopy and universal testing machine. The thermal stability of the composites was evaluated by thermogravimetric. The results show that the carbonized phenolic resin can effectively bond SCF to form a rigid three-dimensional network reinforcement, both types of SCFNR can significantly improve the mechanical properties of the composites. The maximum thermal decomposition temperature of SCFNR/APA6 composite prepared with the carbon fiber length of 1 mm is 150 °C higher than that of APA6
Culture Conditions and Optimization of Glutathione - producing Yeast Fermentation Tank
Authors: Ming Sui , Zhang Yang , Rong Jiachao , Zhu Keyong , Hua jian , Zhou Rong-qing , Li Guoying 
Published: October 2019

Abstract
In this paper, yeast was used as the starting strain, and the obtained strain was inoculated in 5L fermentor by plate, slope and seed culture. The fermentation temperature, fermentation time, rotation speed and ventilation condition were changed by single factor experiment. The content of glutathione was determined by high performance liquid chromatography (HPLC). Finally, the optimum amount of biomass accumulation and target product accumulation were obtained. condition.
A Unique Settling Pattern for Two Circular Particles Having Different Densities
Authors: Shan Xiaopeng , Nie Deming 
Published: October 2019

Abstract
In this work the sedimentation of two circular particles having different densities in a vertical channel has been numerically studied using the lattice Boltzmann method (LBM). The case of a single particle settling in a narrow channel has been simulated to validate the computational code. The relationship between the Reynolds number and the particle-to-fluid density ratio was presented. For the case of two particles, a unique pattern of motion, represented by the process of “drafting-kissing-oscillating-separating”, has been revealed. The vortex structures along with the particle displacements are shown to illustrate this pattern.
Novel Biodegradable Antimicrobial Composite Scaffold by Coating Type I Collagen Scaffold with Pepsin-Degraded SIS Extraction
Authors: Zhong Risheng , Chen Xin , Dai Yao , Xia Leilei , Men Fumin , Zhao Bo , Chen Yi , Liu Hairong , Zhou Zheng 
Published: October 2019

Abstract
The antimicrobial activity of tissue engineering scaffolds is crucial for successful implantations and surgeries by reducing surgical infections. In this study, small intestinal submucosa (SIS) extracts were prepared by in vitro pepsin digestion (pSIS) and its antimicrobial active is stronger than those prepared by accelerated hydrolysis (aSIS). Compared with aSIS, the average molecular weight of pSIS seems smaller with more narrow distribution via SDS-PAGE electrophoresis combined with commassie blue staining. Furthermore, pSIS coated porous type I collagen scaffold (pSIS/COL I scaffolds) displayed a strong antibacterial activity and is suitable for cell seeded and growth, indicating that it can be potentially applied to tissue engineering or surgical tissue repairing in the future.
The Simulation of Electromagnetic Fields with Large Wavelengths
Authors: Wang Chunsheng , Wu Shibin , Shang Dongxing , Li Xueai 
Published: October 2019

Abstract
When the wavelength of an electromagnetic wave is much larger than the microscopic size of the material, the numerical solution of the model to study the effect of the material microstructure on the electromagnetic wave propagation usually fails to be obtained due to computational overload. In this paper, a method using a large-scale simulated structure instead of the real microstructure has been proven. With the simulated structure, the computational load is greatly reduced, and the numerical solution can be obtained. Furthermore, the simulated structure conditions needed to achieve an effect on the electromagnetic wave propagation equivalent to that of the real microstructure were studied.
Development of a new design method for composite pavement structure
Authors: Shi Ning , Su Huan 
Published: October 2019

Abstract
HMA/PCC composite pavement is a new type of durable pavement structure which is a rigid-flexible combination. The composite pavement structure with excellent design has better durability. However, due to less domestic use, there is no effective structural combination design method in china. In this paper, a new structural design method of HMA/PCC composite pavement is put forward, in which the maximum thickness of asphalt concrete is designed according to the allowable permanent deformation, and the lower limit of the thickness of asphalt concrete is designed with the allowable shear stress of bond layer as the index. The composite slab model was used to design the thickness of concrete layer.
The effect of walnut processing by-product filler on properties of plywood
Authors: Li Jing , Xu Shanfeng , Zhang Jialin , Luo Xing , Jiang Ke , He Xie , Chen Yuzhu , Xiao Hui 
Published: October 2019

Abstract
In this study, walnut processing by-product was served as filler to make three-layer plywood, and the physical-mechanical properties were also discussed. The results showed that the formaldehyde emission of plywood corresponding to walnut shell and walnut dregs decreased by 0.0542 mg/L and 0.066 mg/L, respectively. The properties of plywood filled with walnut dregs are better than that of walnut shell filler, and the formaldehyde emission of the corresponding plate is lower. At the same time, compared with flour, the wet bond strength of walnut shell plywood increased by 0.0332 MPa, and that of walnut dregs plywood decreased by 0.123 MPa, but they all met the national standards.
Cerebral Infarction Rehabilitation Evaluation with Posture Analyses
Authors: Fan Yutian 
Published: October 2019

Abstract
A cerebral infarction is a brain illness caused by a blockage in or narrowing of the arteries that supply blood and oxygen to the brain. The restricted amount of oxygen to the brain results in varying levels of disorder in the limb function of patients, severely affecting their normal lives. For cerebral infarction patients, physical rehabilitation is crucial in the early stage of their illness. The correct instruction of rehabilitation exercises can effectively restore the patient’s limb function, reduce the chance of reoccurrence and improve the patient’s daily life. In order to provide cerebral infarction patients effective early treatment, this project strives to develop a motion evaluation model based on deep learning. In order to enhance the instruction of rehabilitation exercises, the project’s model defines 6 standard exercises as training input. It then employs the python Openpose framework to extract the coordinates of 18 joints of the human body, and traces the trajectory of these 18 joints when a person carries out one of the standard exercises. The trajectory of the joints during the exercise is used to train the LSTM network. The final model can be used as a guiding model for rehabilitation training.
Effect of Y2O3 on physical and mechanical properties of TiAlbased alloys
Authors: Wang Che , Yang Liying , Wang Shouren 
Published: October 2019

Abstract
Ti-45Al-5Nb alloy powders were used as the matrix, and added different contents of Y2O3. The TiAl-based alloys with excellent mechanical properties were prepared by vacuum hot pressing sintering technology. Analysed the effect about Y2O3 on the properties of the alloys. The results show that trace amounts of Y2O3 can effectively improve the physical and mechanical properties and refine the grain size of the alloys. When 0.25% Y2O3, the TiAl alloy exhibits excellent hardness, density, flexural strength and fracture toughness. TiAl-based alloys are mainly composed of brittle fracture.
Multiple regression model for identification of material concentration and color reading
Authors: Zhang Hanping 
Published: October 2019

Abstract
According to the experimental data, the color dimensions of different concentrations of five substances were analyzed, and reasonable data was selected to analyze the correlation between concentration and color readings. The quantitative relationship model between material concentration and color reading was established by multiple regression. Considering the autocorrelation of the variables, a one-dimensional regression model of concentration and gray scale was established for sulfur dioxide. The two models were tested and were significant with minimal error. This method can be extended to measuring the concentration of the substance In practice.
Rolling bearing fault diagnosis method based on local tangent space arrangement and VMD decomposition
Authors: Zhang Yanan , Tong Qingbin 
Published: October 2019

Abstract
In this paper, a method based on LTSA and VMD is proposed to effectively extract fault feature information of rolling bearing. The selection of reduced dimension d and neighborhood selection parameter k in LTSA adopts grid search method. Taking the fault characteristic energy ratio (FER) as the objective function, a set of optimal parameters is determined as the input parameter of the manifold learning algorithm. Variational modal decomposition (VMD) is used to denoise signal. The kurtosis value, correlation value and envelope entropy value are comprehensively evaluated, and the optimal component is selected for reconstruction. The optimal component of reconstruction is analyzed by envelope spectrum to realize fault diagnosis. The proposed method is applied to the fault measurement signal. The results show that the proposed LTSA-VMD fault diagnosis method has obvious advantages in signal denoising and fault feature extraction.
High-Throughput Sequencing of Plasma Free DNA In the Second Trimester for Non-Invasive Prenatal Testing of 21-Trisomy Syndrome
Authors: Fu Xiao , Li Mu , Wen Ping 
Published: October 2019

Abstract
Objective: To investigate the application of fetal free DNA (cff DNA) in the peripheral blood of pregnant women to the diagnosis of non-invasive prenatal bowel syndrome (21-trisomy). Methods: 1735 cases of single-pregnant pregnant women with 12-24 weeks of pregnancy were collected, and peripheral blood DNA was extracted. The new generation high-throughput sequencing technology was used for detection and bioinformatics analysis, and amniotic fluid or umbilical cord was selected for 21-three high-risk pregnant women. Blood karyotype analysis was performed. Result: In the 1735 specimens, 12 cases of 21-trisomy positive samples were detected by the new non-invasive prenatal technique, and 12 cases were confirmed by karyotype analysis. The sensitivity and specificity of the non-invasive prenatal technique for the 21-trisomy detection were 100%. Conclusion: The clinical non-invasive prenatal 21-trisomy diagnosis of cffDNA has broad application prospects in prenatal screening.
Global buckling of composite laminated box beam
Authors: Zhu Xiujie , Xiong Chao , Yin Junhui , Yin Dejun , Deng Huiyong 
Published: October 2019

Abstract
Based on the theory of first-order shear deformation beam, the equivalent constitutive Eq. of composite laminated box beam is established. The analytical formula of equivalent bending stiffness and equivalent torsional stiffness characterized by the stiffness coefficient of laminated plates are derived. The critical loads of bending instability and torsional instability are obtained by solving the integral buckling equilibrium differential Eq. of composite laminated box beam under axial load. The variation of critical load under different ply layers and different ply angles is analyzed.
Influence of Filler Wire Feed Speed on Microstructure and Properties of MIG Welding of 7005 Aluminum Alloy
Authors: Zhang Xiang , Xie Dejie , Chen Bo 
Published: October 2019

Abstract
Metal inert-gas welding (MIG) test was carried out using ER5356 welding wire as filler metal and 7005 aluminum alloy plate as base material. Different welding samples were obtained by changing the filler wire feed speed, and their microstructure and mechanical properties were observed and tested. The results show that the MIG welding joint of 7005 aluminum alloy usually consists of 3 parts: welding metal, heat affected zone and base material zone. The lowest hardness of the MIG welding joint is in the weld seam, which is the weakest position of the welding joint. The largest tensile strength of all the test samples is 303Mpa, which is 76.3% of the tensile strength of the base metal. The tensile fracture mode of all the test samples is dimple fracture, and the dimple fracture of the sample with a filler wire feed speed of 9.8m/min is small and dense, with the deepest depth of all the samples.
Research on synthesis and properties of room temperature curing polyurethane damping materials
Authors: Zhou Haijun , Zhou Mengmeng , Zhang Xiaolei , Chen Xiaoqi , Yang Shulan , Li Yantao 
Published: October 2019

Abstract
Room temperature curing polyurethane (PU) damping materials were synthesized with PU prepolymer and self-made curing agent. The prepolymer was synthesized from poly (neopentyl adipate) with higher side methyl content and toluene diisocyanate. Effects of molecular weight of poly (neopentyl adipate) and curing agent types on mechanical properties and damping properties of PU damping materials were investigated. Results showed that tensile strength of room temperature curing PU damping materials is 22.4MPa and the tan δmax reaches 1.10. The damping temperature range of tanδ>0.3 is more than 60°C, which is a kind of damping material with excellent comprehensive properties.
Design of dual narrow-band terahertz absorber based on metamaterials
Authors: Ren Zhongru 
Published: October 2019

Abstract
Metamaterial-based absorbers are a new kind of synthetic electromagnetic materials. Because of their small thickness, easy manufacture and stable performance, they are widely used in electromagnetic wave detection in different bands. Based on the principle of equivalent LC resonant circuit, a dual-band narrow-band absorber in terahertz band is designed in this paper. The frequency domain solver based on CST software is used to study the absorption characteristics of the absorber in terahertz band. The relationship between changing different system parameters and optimizing the absorption rate and adjusting the position of resonance absorption peak is analyzed in detail. It has certain guiding significance for the detection of terahertz wave and the fabrication and optimization of terahertz wave absorbers, filters and resonators.
Effect of Tb Content on The Electrical Properties of Double Perovskite Oxide Pr(2-X) Tbxcomno6
Authors: Li Xiaoxin , Xing Ru , Zhao Jianjun 
Published: October 2019

Abstract
Polycrystalline samples of double perovskite oxide Pr(2-x) TbxCoMnO6 (x=0,0.05,0.1,0.15) were prepared by traditional high temperature solid phase reaction. The structure and electrical transport properties of the samples were investigated by the relationship between the XRD lines and the resistivity of the samples ( ρ -T curve). The results show that all the samples show good single-phase, belonging to monoclinic system, space group is P21/n; the samples are all semiconductor materials; the existence of magnetic field is not conducive to electrical conduction; compared with other samples, the samples with x=0.1 and x=0.15 had better conductivity. The samples in the measured temperature region all follow the way of electrical conduction of variable-range hopping.
Properties of New Two-Dimensional Nanomaterial Black Phosphorus
Authors: Bao Xizhong 
Published: October 2019

Abstract
Two-dimensional (2D) materials have attracted broad interest because of their low-dimensional effect, and black phosphorus has become a member of them due to the successful preparation. Phosphorus has several allotropes, white phosphorus, red phosphorus and black phosphorus. Black phosphorus is most thermodynamic stable in them. Black phosphorus was obtained by a phase transition from white or red phosphorus at high pressure and high temperature. It is a natural p-type semiconductor in which each layer is vertically stacked by the van der Waals force. The thickness of black phosphorus can be scaled down to the atomic layer scale known as phosphorene by mechanical exfoliation or liquid exfoliation. Compared with black phosphorus, phosphorene’s physical properties have significant changes. The band gap in bulk black phosphorus is 0.3 eV and can be expanded to 1.0 to 1.5 eV depending on the layer numbers. Nevertheless, the poor chemical and structural stability of black phosphorus and phosphorene raises important concerns. In the past century, the synthesis, physical properties, and device applications have been extensively investigated in various studies. In this review article, a lot of references of black phosphorus are cited to introduce systematically the research progresses of structure and preparation, the study of material properties and device performance, the chemistry of the degradation process and the anti-degradation treatments. At last, the development trend of phosphorene is mentioned.
Fabrication and optical properties of InP/Cu2O nanojunctions
Authors: Li Qiang , Dai Kai , Li Hong , Zhang Min , Zhu Guangping , Zheng Maojun 
Published: October 2019

Abstract
The InP/Cu2O nanojunction hybrid materials are fabricated by a facile method via electrodeposition of CU2O nanoparticles on the ordered one dimensional InP nanopore arrays. The morphology and element composition of the InP/Cu2O heterostructures are characterized. Experimental results indicate p-type Cu2O nanoparticles homogenously covered on the surface of n-type InP nanopore arrays and formed efficient heterogeneous structure. Compared to the pristine InP nanopore arrays, the InP/Cu2O nanoheterojunction structure have advantageous of the separation of photogenerated electron-hole pairs.
Chemical Looping Method for Production the Feed Gases of Ammonia Synthesis: Thermodynamics
Authors: Wang Qi , Wang Kun , Hua Jialiang , Peng Ruijie 
Published: October 2019

Abstract
This work proposes a chemical looping method to achieve the coproduction of N2 and H2. The system include a fuel reactor, a H2 generator and a N2 generator. Thermodynamics analysis is carried out to evaluate the feasibility of this method. In the fuel reactor, when the reaction temperature is 1000°C, 1.067kmol Fe and 0.851kmol FeO can be transported to the H2 generator and 2.991kmol syngas is produced. In the H2 generator, when the reaction temperature is 500°C, 0.223kmol Fe, 0.485kmol FeO and 0.425kmol Fe3O4 can be transported to the N2 generator and 1.250kmol H2 is produced. In the N2 generator, when the reaction temperature is 600°C, 1kmol Fe2O3 can be transported to the fuel reactor and 1.484kmol N2 is produced.
Fermentation Optimization of Bacillus Licheniformis
Authors: Ming Sui , Zhang Yang , Guan Yonglin , Li Chunming , Shu Xuexiang , Rong Jiachao , Zhou Rongqing , Li Guoying 
Published: October 2019

Abstract
Optimizing the fermentation conditions of Bacillus licheniformis and increasing the yield of Bacillus licheniformis to better serve agriculture is a very important research. The purpose of this experiment was to investigate the optimal fermentation conditions for increasing the production of Bacillus licheniformis. Through a series of investigations on Bacillus licheniformis, the system has learned the optimization method of the culture medium and the analysis method of the experimental data, and strengthened the basic experimental operation skills to lay the foundation for future experimental exploration.
Prediction of SINS/GPS Navigation Information by ELM Algorithm during GPS outages
Authors: Cao Yang , Jia Fangxiu , Jiang Xun , Zhang Qing 
Published: October 2019

Abstract
SINS/GPS integrated navigation has received great attention recently due to its impressive navigation accuracy on missile-borne platforms. However, it remains an ongoing challenge to address the problem of GPS signal loss. Furthermore, the limited space and power consumption of a projectile have made it challenging to carry out time-consuming iterative calculations. In this paper, ELM is proposed for the first time to predict the navigation information on the missile-borne platform for its simpler neural network structure and no iterative calculation. Comparing it with the algorithms of BP and GABP, the simulation results reveal that the ELM algorithm is more time-saving with higher prediction accuracy than the others. More importantly, the number of parameters needed to be set is much less than those of the other two algorithms, which is beneficial for its practical application.