bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of Bioleaching Process of High-Fluoride-Bearing Uranium by Response Surface Methodology
Authors: Li Xiang , Mo Xiaolan , Wen Jiankang , Yang Hongying 
Published: August 2019

Abstract
In the bioleaching system of high-fluorine uranium, the dissolution of fluorine must be considered, which is also affected by the parameters of the leaching process. In order to adapt the fluorine-containing system, the strain was domesticated under different fluoride level. In order to match the process parameters in the bioleaching of high-fluoride-bearing uranium ore, response surface methodology was used to predict the effective parameters and their interactions in bioleaching. Four significant variables ([Fe2+]initial, pH, solid-liquid ratio and inoculation percent) were selected for the optimization studies. The optimal values of the variables for the maximum uranium bioleaching recovery (94.230±0.74)% were as in agreement with the predicted models 94.41%.
Facile Preparation of Carbon Aerogels with Different Drying Methods
Authors: Xu Yuelong , Liu Zhenfa , Ren Bin , Wang Shasha , Zhang Lihui 
Published: August 2019

Abstract
Carbon aerogels were prepared through a polycondensation of phloroglucinol, resorcinol and formaldehyde with sodium carbonate as the catalyst under different drying methods. The drying methods were room temperature drying, vacuum drying and freeze drying. The effects of different drying methods on the porous structure of carbon aerogels were studied systematically. The texture and pore structure were investigated under scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and a surface-area analyzer. The results show that the freeze-drying method was good for the specific surface area of carbon aerogels, up to 843 m2 g–1.
Study on the Physical Properties of LiCl Solution
Authors: Song Ruiqi , Zou Tonghua , Chen Jianbo , Hou Xiaobing , Han Xiaowang 
Published: August 2019

Abstract
In the process of dehumidification of the solution, dehumidifier contacts with air directly to achieve the purpose of dehumidification, which is a very important part of air conditioning dehumidification system. Under different working conditions, the basic physical parameters of the liquid desiccant will change, which will have an important impact on the efficiency and performance of dehumidification. LiCl solution is widely used as a desiccant with many advantages such as high efficiency and safety. In this paper, the basic physical parameters of LiCl solution with high accuracy are summarized. Empirical formulas of saturation temperature, surface tension, density, dynamic viscosity, thermal conductivity, specific heat and dilution enthalpy of LiCl solution are summarized. The relationship between different physical properties and temperature, pressure and solution concentration is drawn. The corresponding data tables and graphs are drawn under different working conditions. This conclusion has developed a new idea for the research of desiccant solution, which provides a basis for follow-up research and in-depth research.
Synthesis of Graphene Hydrogel and Graphene Oxide/Polyaniline Composites for Asymmetric Supercapacitor
Authors: Shang Yangyang , Xu Liao , Cai Linlin , Jiang Xiaoqing 
Published: August 2019

Abstract
As a kind of new carbon materials, graphene has excellent performances such as superior conductivity, high specific surface area (2675 m2 g−1), and high cycle life. But graphene sheets are easily restacked by van der Waals interactions during the processes of preparation, storage, and application of them, which can loss ultrahigh specific surface area. The restacking of graphene sheets could be prevented by constructing graphene hydrogel (GH) or graphene composite. In this work, GH was prepared by a one-step hydrothermal synthesis reaction and glucose is used as a reducing agent, while graphene oxide/polyaniline (GP) composites was prepared by coating polyaniline on GO through in situ chemical polymerization of aniline. Then an asymmetric supercapacitor (GH//GP) was further assembled, where GH and GP are the positive and negative electrodes, respectively. The electrochemical properties of GH, GP, and GH//GP are studied using voltammetry and galvanostatic charge/discharge. The consequences indicate that the energy density of GH//GP reaches 5.6 W h kg−1 at power density of 226.5 W kg−1 and 3.1 W h kg−1 at energy density of 8446.2 W kg−1.
Development Trends of Energy Saving Technologies in Chinese Steel Industry
Authors: Wang Haifeng 
Published: August 2019

Abstract
Since the 21st century, the energy consumption per ton steel of Chinese key steel plants was reduced from 26.95GJ/t-s in 2000 to16.73GJ/t-s in 2017 by technical progress, such as coke dry quenching (CDQ), dry de-dusting of blast furnace gas (BFG) and converter gas (BOFG). In the future, developing interface technologies and building an industrial ecological chain connecting related industrial sectors and the society would be the development trends of energy saving technologies in Chinese steel industry.
Study on the Coupling and Coordination Relationship between Urbanization and Ecological Environment in the Yangtze River Economic Belt of China
Authors: Peng Shuolong , Jin Yuying 
Published: August 2019

Abstract
Based on the contradiction between urbanization and ecological environment in China’s Yangtze River Economic Belt, and the related researches are few, this paper uses the coupling coordination model to calculate the coupling degree of urbanization and ecological environment in China’s Yangtze River economy from 2010 to 2016, supplementing existing literature with new research objects and complete indicator system. It is found that the coordination degree between the two systems in the region keeps rising, and the value in the eastern region is greater than the value in the central and western regions.
Research Progress of Spatial Distribution about Geomorphologyl-Vegetation- Water Erosion Based on Remote Sensing in Soil Covered Pisha Stone Area
Authors: Shen Zhenzhou , Yao Wenyi , Xiao Peiqing , Li Mian , Zhang Pan , Yang Jishan , Chengran Jing , Liu Hui 
Published: August 2019

Abstract
The soil covered Pisha stone area is the core source area of the coarse sediment in the Yellow River, it has become the focal point of the ecological control of the Yellow River Basin. It has important value to study the spatial distribution about geomorphologyl-vegetation- water Erosion coupling in the soil covered Pisha stone area. Some valuable research results have been obtained by using high-definition remote sensing aerial photographs and unmanned aerial vehicle high precision data interpretation, Especially the image resolution obtained by unmanned remote sensing to obtain the spatial structure features of small watershed topographic features or vegetation structure characteristics. Use remote sensing to study the spatial distribution characteristics of soil erosion in the Pisha stone area slope and the regular response with time change on the geomorphic spatial structure of the slope is very important, the negative response relation between the spatial structure of the vegetation community and the energy dissipation impedance erosion need be study. It will be an urgent scientific problem to promote the research progress of soil erosion in pisha stone area, which will directly affect the theoretical foundation of the comprehensive treatment model of soil erosion in Pisha stone area.
Study on the Correlation between Hydration Heat and Electrical Resistivity of the Cement Pastes with Polycarboxylate Superplasticizer
Authors: Zheng Yunhao , Xiao Lianzhen 
Published: August 2019

Abstract
Resistivity development curves and hydration heat curves of the cement pastes with the superplasticizer dosages of 0, 0.1%, 0.3% and 0.5% were tested. It is found that the resistivity of the cement pastes decreases and the peak time of hydration exothermic rate was delayed with the increase of superplasticizer dosage. The relationship between the resistivity and the total amount of hydration heat was established. By measuring the resistivity, the total amount of hydration exothermic heat of the cement pastes can be effectively predicted based on the correlation.
Effect of Austenitizing Temperature on Divorced Eutectoid Transformation of GCr15 Steel
Authors: Han Dongxu , Du Linxiu , Zhang Bin , Dong Ying 
Published: August 2019

Abstract
The effects of holding temperature and holding time during the spheroidizing annealing on microstructure and mechanical properties of high-carbon chrome steel GCr15 were experimentally studied, especially the ripening process of carbides. The results showed that the spheroidization of carbides was accelerated by optimizing the spheroidizing annealing process. In the case of the same holding temperature, the amount of carbides increases first and then decrease with the increase of holding temperature. The best spheroidizing temperature was about 720°C. Under the conditions of various holding time, the size of carbides and the hardness decrease with the increase of holding time.
Effect of Coiling Procedure on Microstructure and Mechanical Properties of C-Si-Mn Hot-rolled TRIP steel
Authors: Zhang Bin , Du Linxiu , Dong Ying 
Published: August 2019

Abstract
The effect of coiling procedure on microstructure evolution and mechanical properties were experimentally investigated. The results showed that the strength of experimental steels was increased and the elongation was decreased with temperature below Ms point. Among all the experimental steels, the mechanical properties of steel A and steel C were imperfect. It can be attributed to the high coiling temperature (500 °C) and low coiling temperature (285 °C). The mechanical properties of the experimental steel B were the most balanced and excellent. The yield strength, tensile strength and impact energy of the 1/4-Charpy size specimen were 685 MPa, 1010 MPa and, 16.3 J respectively, which could meet the demand of high strength structural steel in civilian applications the total elongation at -20 °C was 15.3% and TRIP effect caused by RA was obvious.
Research on Mechanism of FGFR1 Inhibitor BAY1163877 against Proliferation of Breast Cancer Cells
Authors: Cui Yingnan , Zhang Li , Xing Jin , Yang Zhaoying 
Published: August 2019

AbstractTo investigate the effect and mechanism of fibroblast growth factor receptor 1 (FGFR1) inhibitor BAY1163877 on proliferation and apoptosis of breast cancer cells. The expression of FGFR1 in human breast cell lines was detected by qRT-PCR and western blot. IC50of BAY1163877 and cell viability were measured by CCK-8 method. Cell proliferation was observed by colony assay. Cell apoptosis after treatment of BAY1163877 was tested by flow cytometry. The expressions of p-FGFR1/FGFR1 and p-STAT3/STAT3 protein were detected by Western blot. According to the results of qRT-PCR and Western blot, FGFR1 high expression of breast cancer cell line MDA-MB-231 and FGFR1 low expression of breast cancer cell line MCF-7 were selected. BAY1163877 inhibits proliferation of MDA-MB-231 and MCF-7 cells and induces apoptosis of MDA-MB-231 and MCF-7 cells. The results of Western blot showed that the expression of p-FGFR1 and p-STAT3 protein in MDA-MB-231 was reduced after BAY1163877 treatment and the expression in MCF-7 was not significantly changed. BAY1163877 inhibits the proliferation and induces the apoptosis of high FGFR1 expression breast cancer cell line MDA-MB-231, and its mechanism may be related to the decrease of p-FGFR1 and p-STAT3 protein expression. BAY1163877 inhibits the proliferation and induces the apoptosis of MCF-7, but its mechanism still needs the further study.
HPLC Method for Simultaneous Determination of Six Isoflavones in Soybean Yoghurt
Authors: Huang Zican , Xia Ming 
Published: August 2019

Abstract

Objective: To establish an HPLC method for simultaneous determination of six isoflavones (daidzin, glycitin, genistin, daidzein, glycitein, and genistein) in soybean yoghurt, providing a reference for its development of quality standards and functional evaluation. Methods: The six kinds of isoflavones were measured on a C18 column (250 mm×4.6 mm, 5μm) with a gradient solvent system of acetonitrile - trifluoroacetic acid solution as mobile phase at a flow rate of 1mL·mL-1 and the column temperature was kept at 40°C. The detection wavelength was 255nm. Results: Excellent chromatographic separation and good linearity with peak areas were achieved for 6 kinds of soybean isoflavones composition. The experiment was reproducible. Within the studied concentration ranges, the RSD were less than 2.50% and the average recovery were between 94.10% and 99.70%. Conclusion: This HPLC method is simple, feasible, stable and reliable. More importantly, it can detect the content of six soybean isoflavones simultaneously.
Intelligent Simulated Human Model in Modern Medical Education
Authors: Wang Na , Li Mengyang , Jia Huiqing , Wang Jinguo 
Published: August 2019

Abstract
As a new carrier of medical education, intelligent simulated human model has increasingly prominent advantages in modern medical education. This paper introduces the current situation of the application of intelligent simulators in medical colleges and universities in China, analyzes the problems existing in the application of intelligent simulators in medical simulation teaching, and puts forward suggestions for effectively promoting the teaching of intelligent simulators in the future.
Simulation Analysis of Forging Process of Automobile Aluminum Alloy Swing Arm
Authors: Shi Peicheng , Xia Xianyang , Zhou Jun , Xiao Ping 
Published: August 2019

Abstract
To effectively shorten product development cycle, cut down the expense and reduce costs, in the production forging process of aluminum alloy swing arm, the technological process of sawing off, high temperature heat treatment, roll forging, blank making, flattening, die forging, residual edge removing and forging inspection are adopted. Taking Deform-3D software as the platform, the forging process of aluminum alloy swing arm is modeled and simulated by finite element method, and the flow law of cold extrusion metal during the forging process of aluminum alloy swing arm is analyzed. The results show that the forging process can achieve a better forming forging, which can provide a theoretical basis for the actual industrial production of forgings.
Study on Equivalent Bending Stiffness of 1250mm2 Large Section Conductor
Authors: Liu Chen , Qin Jian , Wan Jiancheng , Jing Wenchuan , Fan Chenghu 
Published: August 2019

Abstract
Current calculation method of tension stringing construction does not include the influence of bending stiffness of conductor. There are relative errors between the calculated results and the measured results of a series of important parameters, such as conductor wiring length, maximum pull tension, sag between the various sections, which have adverse effects on construction safety. Aiming at 8×JL1/G2A-1250/100 conductor in UHV engineering, the simulation model was established by the finite element software for the equivalent bending stiffness of the large section conductor. The coupled displacement constraints were applied to the whole section of the two ends of conductor. Changing the vertical displacement of one end section, the conductors with different lengths were simulated by the explicit kinetic method considered the contact friction between wire strands. Combined with the mechanical cantilever beam model, the equivalent bending stiffness of the conductor under different working conditions was obtained. By analyzing the curves of the equivalent bending stiffness of the conductor, the equivalent bending stiffness of the long conductor suitable for engineering calculation is obtained. The research result provides key parameter for the accurate tension control in tension stringing construction of UHV project.
Cement Pavement Crack Identification Method Based on DFT Transformation and Crack Segment Splicing Method
Authors: Ying Hong , Chen Shunxin , Zhang Yukai 
Published: August 2019

Abstract
The groove is the biggest interference factor in the identification of cement pavement cracks. In the process of restraining or eliminating the grooves, it inevitably reduces the contrast between the cracks and the background, at the same time weakens the cracks in the grooves and destroys the connectivity of the cracks. A large number of short crack fragments are mixed with noise, which increases the difficulty of subsequent identification. In order to solve these problems, a slot elimination method based on DFT transform and a splicing method based on grid voting method are proposed. Firstly, the image of cement pavement is transformed from DFT to frequency domain, and the characteristic of groove in frequency domain spectrum is obtained. On this basis, according to the periodicity of the groove in the spatial image, the position of the groove spectral peak in the frequency domain image is deduced, and a series of filters are designed to eliminate these spectral peaks in the frequency domain, and then the slot is eliminated by the inverse DFT transform in the spatial domain. Then, the global spatial image of cement pavement is binarized by Otsu method, and the noise is filtered after the square vote to realize the splicing of cracks so as to achieve the purpose of complete extraction of cracks. The experimental results show that the proposed method can eliminate the interference of the groove and keep the integrity of the crack after splicing.
Computer Design of Overload Protection Device of Adsorption Automatic Locking Screw Machine
Authors: Zhu Xiaoyan , Fang Ziqiang 
Published: August 2019

Abstract
This paper studies the overload protection structure of the single-axis adsorption automatic locking screw machine commonly used in industrial production, focusing on the simulation analysis of the overload protection coupling and the buffer shaft. The computer design requirements and functions of these two structures in the process of product design are discussed.
Simulation of Microscale Features Effect on Mechanical Properties of PTFE-Al Composites
Authors: Liu Juan , Tang Le , Zheng Yuanfeng , Wang Haifu 
Published: August 2019

Abstract
The compression behavior of polytetrafluoroethylene (PTFE)–aluminum (Al) is studied by the means of the two-dimensional finite element analysis of mesoscale model containing a random dispersion of particles. The results show that for composite materials with a single particle size the strength of the material increases first and then decreases with the increase of the content of metal particles. When the particle content is high the strength of the material can be improved by a reasonable particle gradation. The influence of particle content and size on the strength of particle composites is obtained and theoretical analysis is carried out from the perspective of the formation and evolution of force chains.
Proximal schemes by family of szl –widering mappings
Authors: Abed S S , Maibed Z H 
Published: August 2019

Abstract
in this paper, we give a concept of szl –widering mapping which is independent of nonspreading mappings, k – strictly pseudo nonspring mappings and nonexpansive mappings. Also we introduce a new proximal point schemes of resolvent and szl –widering mappings. On the other hand, we discuss that the weak and strong convergence for these proximal point schemes in real Hilbert space under different conditions to asymptotic common fixed point of szl –widering mappings.
Squeeze film characteristics in synovial hip joint
Authors: Abdullah Enas Yahya 
Published: August 2019

Abstract
In this paper general classification of the lubrication regimes in synovial hip joint was given The discussion was focused on two main points, the calculation of film thickness and minimum film thickness for each of the (hydrodynamic lubrication, squeeze film lubrication and, elasto-hydrodynamic lubrication), and the relationship between film thickness and gait cycle( stance phase and swing phase ) also and the coefficient friction. Physical properties affecting the film thickness will be discussed in each lubrication system.
Nonparametric Estimation for Hazard Rate Function by Wavelet Procedures with Simulation
Authors: Mohammed Ali Talib , Hussein Iden Hasan 
Published: August 2019

Abstract
This article is a study of a non-parametric estimation of the hazard rate function using the linear wavelet estimation for right randomly censoring data. The strategy of the estimation is based on the use of the wavelet projection of the father function{φ

j,k
(x),j = 1,2,…, 0 ≤ k ≤2
j−1} on the subspace (Vj
) of the spaceL
2(R), with the Breslow estimate of the cumulative function. Real data of patients suffering from liver metastases is using as an application. Moreover, a simulation study is used to give more clarify to the method of estimation.
Some Result in 2-Fuzzy Vector Metric Spaces
Authors: Faydh Sada , Hassan Zainab , Kareem Mushtaq , Abdulameer Dhuha 
Published: August 2019

Abstract
Recently, the 2-fuzzy vector metric space played a wild role in many subjects. Therefore, more than one author works and writes a new paper on 2-fuzzy vector metric space. In this paper, first we recall the concept of 2-fuzzy vector metric spaces and consider the topology induced by a fuzzy vector metric spaces. Open balls, closed balls in 2-fuzzy vector metric spaces are also defined convergent sequence, Cauchy sequence and consider the topology induced by a 2-fuzzy vector space.
Solvability and Controller Action on Local Saddle-Node Bifurcation of Reduced Order Two-Dimensional Differential-Algebraic System
Authors: Kadhim Mohammed , Almamoori Mohsin 
Published: August 2019

Abstract
This paper focuses on the solvability and local Saddle-Node bifurcation ensurance of two-dimensional differential-algebraic equations of index-1 with its feedback controller. The feedback controller action has been designed to satisfy the necessary requirements for Saddle-Node bifurcation ensurance. The mathematical assumptions and proofs have proposed with systematic illustrations to demonstrate the applicability of the proposed approach.
The Solutions of Mixed Hemiequilibrium Problem with Application in Sobolev Space
Authors: Alwan Alyaa A. , Naser Hasan A. , Hashoosh Ayed E. 
Published: August 2019

Abstract
The present work deals with the existence and uniqueness of solutions for new class of hemiequilibrium problems

ϑ

(

x,y

)

+
ν

(
y
)

−
ν

(
x
)

+

P
0

(

Ω
x;
Ω
δ

(

x,y

)

)

≥
0.

The proof of the first result is based on arguments of Tarafdar’s theorem involving ψ – monotone bifunction. Moreover, an application to the existence of solution for a differential inclusion is given.
On α∗ –Open Sets in Topological Spaces
Authors: Ali Abbas Nadia M. , Khalil ShukerMahmood 
Published: August 2019

Abstract
In this paper, we introduce a new kind of an α – open sets which is called an α∗ – open sets. Also, we study and discuss some of it’s properties and compare this new notion with some other classes of sets. Moreover, some characterizations, remarks, and counterexamples are given in this work.
Bayesian Panel Data Model with Constraints
Authors: Mohaisen Ameera Jaber , Abdulsamad Saja Yaseen 
Published: August 2019

Abstract
In this paper, we consider a set of linear constraints on the coefficients of the random panel data model. Furthermore, Bayesian approach based on Markov Chain Monte Carlo (MCMC) is employed to making inferences on the model coefficients subject to this constraints.