bluuebunny/crossref_metadata_2025_split huggingface dataset:
Minimal informationally complete measurements for probability representation of quantum dynamics
Authors: Yashin V I , Kiktenko E O , Mastiukova A S , Fedorov A K 
Published: September 2020

Abstract
In the present work, we suggest an approach for describing dynamics of finite-dimensional quantum systems in terms of pseudostochastic maps acting on probability distributions, which are obtained via minimal informationally complete quantum measurements. The suggested method for probability representation of quantum dynamics preserves the tensor product structure, which makes it favourable for the analysis of multi-qubit systems. A key advantage of the suggested approach is that minimal informationally complete positive operator-valued measures (MIC-POVMs) are easier to construct in comparison with their symmetric versions (SIC-POVMs). We establish a correspondence between the standard quantum-mechanical formalism and the MIC-POVM-based probability formalism. Within the latter approach, we derive equations for the unitary von-Neumann evolution and the Markovian dissipative evolution, which is governed by the Gorini–Kossakowski–Sudarshan–Lindblad (GKSL) generator. We apply the MIC-POVM-based probability representation to the digital quantum computing model. In particular, for the case of spin-1/2 evolution, we demonstrate identifying a transition of a dissipative quantum dynamics to a completely classical-like stochastic dynamics. One of the most important findings is that the MIC-POVM-based probability representation gives more strict requirements for revealing the non-classical character of dissipative quantum dynamics in comparison with the SIC-POVM-based approach. Our results give a physical interpretation of quantum computations and pave a way for exploring the resources of noisy intermediate-scale quantum devices.
Thermophoretic particles deposition in time-dependent magneto flow over oscillatory spinning disk
Authors: Rauf A , Shehzad S A , Mushtaq T , Abbas Z , Mustafa F , Tlili Iskander 
Published: September 2020

Abstract
Thermophoresis particles deposition is a fundamental procedure of micro-particles transmission through temperature gradient and has major significance in aerosol and electronic technologies. To observe the variation of mass deposition, the phenomenon of thermophoresis is encountered in time-dependent electrically conducting flow of viscous fluid by rotating disk which also oscillates periodically. The swirl flow finds significance in hydraulic pumps and conical diffusers. The fluid model initially based upon the system that comprises on the partial differential equations (PDEs) and then re-framed into the ordinary differential equations (ODEs) by similar transformations. To obtain the numerical results in graphical and tabular formats, we first apply the finite difference scheme on governing equations and then implemented successive over relaxation (SOR) method for faster convergence. Statistical approach is also executed to discuss the Pearson’s correlation and probable error for the emerging physical parameters. Three-dimensional flow graphs, contour plots and scatter plots of shear stresses are also drawn. The oscillatory behavior of radial curves is reduced by increasing the magnetic parameter. Thermophoretic co-efficient and relative temperature difference parameters demonstrated the opposite impact on oscillatory concentration field. A moderate positive correlation is noticed between swirl parameter and radial shear stress.
Wear Mechanism of Copper-based Powder Metallurgical Friction Materials with Different Graphite Content
Authors: Zhang Nan , Hu Zheng , Du Jianhua , Zhang Wanhao , Han Junjiao , Ji Zhen 
Published: September 2020

Abstract
Copper-based friction materials with different graphite contents were prepared by powder metallurgy process. The influence of graphite content on the surface hardness of friction materials was studied by Bush hardness tester. By means of scanning electron microscope (SEM) and energy dispersive spectrometer (EDS), the wear morphology and composition of friction materials were studied, and the wear mechanism was analyzed. The results show that the graphite content has little effect on the surface hardness of friction materials, and the surface hardness mainly depends on the copper matrix and its alloy elements. The main wear mechanism of copper based friction materials is plough type abrasive wear. Graphite has good lubricity and can reduce the wear.
Study on the Properties of Rock Wool for External Thermal Insulation of Buildings under the Soaking and Hot & Humid Conditions
Authors: Lu Guozhong 
Published: September 2020

Abstract
In this paper, the tensile strength, moisture absorption, thermal conductivity, moisture permeability and other properties of rock wool under different humid and hot conditions are studied, and the law of rock wool performance changing with different humid and hot conditions is analyzed. The test shows that rock wool has good resistance to humidity and heat and durability and can be widely used in various construction projects. The test data can provide a reference for the better application of rock wool in engineering.
Preparation of Graphene Oxide/Pristine Graphene/Polyaniline Ternary Composites through a Simple Method and Application to Supercapacitor
Authors: Shang Yangyang , Cai Linlin , Jiang Xiaoqing 
Published: September 2020

Abstract
A new graphene oxide/pristine graphene/polyaniline (GPP) composite is successfully prepared. Transmission electron microscope, Scanning electron microscope, Raman spectroscopy and X-ray photoelectron spectroscopy were used to characterize the electronic structure and morphology of GPP composites. The specific capacitance of GPP is 1231.8 F g−1 and 598.1 F g−1 in a three-electrode system and a symmetric supercapacitor at 1.0 A g−1. The specific capacitance of GPP maintains about 71.2% and 55.1% after 10000 cycles in the three-electrode and two-electrode systems, respectively.
FeS/Reduced Graphene Oxide Composite as Anode Material with Enhanced Performance for Lithium-ion Battery
Authors: Jiang Runtong , Yu Jin , Shi Fanian 
Published: September 2020

Abstract
FeS/Reduced graphene oxide(RGO) were synthesized successfully using a facile calcination method followed by a coprecipitation process. The structure and morphology were examined via X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). Afterwards, the electrochemical performances were characterized by cyclic voltammetry, the electrochemical impedance(EIS), and charge/discharge techniques. The results reveal the following three points. First, compared with pure FeS, FeS/RGO composite material has a higher specific capacity. Second, the existence of RGO layers can enhance the electrochemical conductivity for overall electrodes. Third, the FeS/RGO composite showed outstanding coulombic efficiency and good cycling stability.
Study on Photocatalytic Ability and Mechanism of Graphene Oxide
Authors: Zhao Haoqi , Gu Baoshan , Yang Peiyan 
Published: September 2020

Abstract
Graphene oxide (GO) was prepared by a modified Hummers method, and the morphology, composition and structure of the graphene were characterized by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and Raman spectroscopy. The refractory organic wastewater was represented by methyl orange (MO). The photocatalytic ability of GO to degrade MO under visible light irradiation was improved by the addition of H2O2, aeration, the increase of illumination, according to the photocatalytic mechanism of GO.
Multi-objective Structural Optimization of VL Seal Ring Based on Isight
Authors: Ren Jie , Zhu Hongwei , Wang Heng , Zhao Changfang , Zhong Jianlin 
Published: September 2020

Abstract
To obtain the best geometric size of VL sealing ring and improve its sealing performance, this paper carried out multi-objective optimization research on VL sealing ring by Isight software. Firstly, according to the working principle and geometric size of the VL seal ring, determined the constraint conditions, established the optimization objective equation, and given the value range of the structural parameters was. Then, verified the validity of the approximate model by fitting the radial basis neural network model provided. Finally, analyzed the sensitivity of influencing factors of oil film thickness at lip, and established the optimization module by NSGA-II multi-objective optimization algorithm. As a result, the best geometric size is obtained from multi-objective optimization, and the structure of VL seal ring has achieved the goal of more suitable high speed dynamic seal and longer service life.
Power Network Topology Modelling Method Based on CIM
Authors: Wang Lei , Guo Lijuan , Li Shentong , Xie Jingpei , Li Lubo , Hong Yunfu , Niu Lin , Guo Ting , Li Hongbo , Wang Yubin 
Published: September 2020

Abstract
IEC61970 adopts CIM/SVG as the standards of graphic modelling for the power system, but its application is only limited in graphic integration and static topology expression at present. This paper proposed a new topology generation and searching scheme based on CIM which can reflect the actual power network diagram. The method avoids directly searching on the diagram file which is the bottleneck restrictions of this system. The system makes SVG operation program no longer as an independent system, but as the data source of the power network topology. This paper also put forward a new data structure based on this topology method, which makes searching algorithm more real-time and reliable than the traditional method.
Effect of Electret Process Parameters on Filtration Performance of Polypropylene Melt-Blown Nonwoven Fabric
Authors: Zhang Yong 
Published: September 2020

Abstract
With the spread of the novel coronavirus, masks become daily necessities, and their protective effect mainly depends on the core materials, so improving the performance of the core material polypropylene melt-blown nonwoven fabric has become the current research hotspot. The filtration performance of PP melt-blown nonwoven fabric mainly depends on the electret process parameters. The electret treatment of PP melt-blown nonwoven fabric is carried out by using high voltage corona discharge. The research on the influence of the electret process parameters, such as charging time, charging voltage and charging distance, on the filtration performance of PP melt-blown nonwoven fabric will have guiding significance for the practical production. In this paper, after a lot of research and experimental work, find out the influence of process parameters on the filtration performance of nonwoven fabrics. It is found that the best condition for the sample is the charge time of 12 min, the charge voltage of 15 kV and the charge distance of 4 cm. The filter efficiency is 90.2%, which is more than 1.5 times higher than that before the sample. The air permeability of melt-blown nonwovens after electret treatment did not decrease.
Research on Forest Health Industry Based on Wanghong Economy——Taking Forest Health Industry of Sucun Township as an Example
Authors: Gai Luofan , An Yonggang , Sun Weiwei 
Published: September 2020

Abstract
Forest health industry is a new type of business generated by the development of social economy in China, which is in line with people’s attitude towards forest and nature. However, with the gradual deepening of the degree of marketization in China, the research on the core competitiveness of forest health industry is imminent. [1] It not only requires convenient transportation and perfect infrastructure, but also how to form flow to drive the development of health care industry in a short time. This paper discusses the forest health industry in Sucun Township with the help of netred economy.
3D Bio-Printing Fabrication and Properties of Graphene Dispersion-based Hybrid Scaffolds
Authors: Peng Jun , Li Liying , Nie Yi , Liu Tianqing , Song Kedong 
Published: September 2020

Abstract
Peripheral nerve is an important tissue of human body, which is distributed in various parts of human body, and has the function of connecting central nervous system and other organs. The self-repair ability of the nervous system is poor. However, 3D bio-printed neural tissue-engineered scaffolds offer a promising solution. In this study, graphene (Gr) was dispersed by a certain method, and then blended with gelatin (Gel) and sodium alginate (SA) to prepare a mixed bio-ink. Performance of different ratios of bio-ink was evaluated to determine the best printing ratio of the material. Four groups of Gr/Gel/SA scaffolds (The concentrations of graphene were 0%, 0.02%, 0.08% and 0.2% (w/v%), respectively) were prepared by using 3D printing technology. The mechanical strength, contact angle, degradation rate and water absorption of bio-scaffolds were compared to select the most suitable scaffold to support cell proliferation and differentiation, PC12 cells were used to study the biocompatibility of the scaffolds. This article aims to get the most optimized scaffolds.
Exploration of a New Model of Pig Circular Economy Breeding under Intelligent Agriculture
Authors: Gong Xiaoyan , Ji Yatong , Yue Zhenglin , Chen Hongyu , Chen Yingying , Tang Hongyi , Liu Tonghai 
Published: September 2020

Abstract
In order to solve the problems of single mode and serious pollution of large-scale breeding, random site selection, unreasonable layout, neglect of information technology update and development, low technology content and other issues in the traditional pig breeding mode, through exploring circular economy, intelligent agriculture mode and analysing data, the optimal breeding mode-pig circular economy breeding mode under intelligent agriculture was finally explored. The whole new model is based on the sales analysis of “internet +” to obtain the number and scale of cultivation. After scientific and reasonable site selection and layout using “3S”technology, a new model of organic circulation unification of intelligent pig cultivation, intelligent waste treatment, and intelligent cultivation of feed crops. It has opened up a new way for pig breeding mode.
Wind Load Evaluation of Wind Turbine Tower Design
Authors: Wu Enjun , Chen Hongjun , Qu Wenfeng , Huo Chong , Liang Zhengzhao , Huang Xiangzhao , Li Zhenrong , Li Hang , He Bin , Yang Tao , Shen Zhongming 
Published: September 2020

Abstract
According to the current main wind turbine design specifications, the necessary parameters for wind load assessment of wind turbine tower are discussed. According to IEC61400-1 (IEC2019) and Japan’s Guidelines for Design of Wind Turbine Support Structures and Foundations (JG2010), the wind load assessment of the tower structure of a 2MW horizontal axis generator is carried out, and the calculation results are compared. It can be seen from the comparison that the design value from the evaluation formula of JG2010 and the design value from the load condition of IEC2019 by using GH bladed simulation matches well. The main reason is that the evaluation formula of JG2010 itself is derived according to the response spectrum method. So, JG2010 is a good reference for the design of domestic wind turbines and the formulation of relevant specifications.
Simulations for a New Phase-Field Model for Phase Transitions Driven by Configurational Forces
Authors: Chen Mei 
Published: September 2020

Abstract
In this paper, we shall investigate an initial (Neumann-) boundary value problem for a phase-field model proposed about a decade ago by Alber and Zhu to describe structural phase transitions driven by configurational forces, and this model differs from the famous Allen-Cahn model by a non-smooth term of the gradient of an order parameter. Numerical examples show that how the total energy for the Alber-Zhu model evolves with different values of the mobility coefficient and isotropic interfacial energy coefficient. Also a numerical comparison with the Allen-Cahn model shows that solutions to the Alber-Zhu model reach their equilibrium much faster than those to the Allen-Cahn model, moreover, the algorithms are more stable.
Adsorption of Methyl Blue by Maize Waste Based Biochar: Adsorption Kinetics and Isotherms
Authors: Mu Weina , Bao Decai , Chang Chun , Lian Fei 
Published: September 2020

Abstract
Different residue sections from maize were used as the raw materials to prepare biochars through pyrolysis under oxygen-limited conditions, and their adsorption efficiencies were compared. The results showed that leaf derived biochar had a best adsorption performance for methyl blue (MB) than other residues. It is interesting that the correlation coefficient (R
2) was affected by the dosage of leaf biochar, indicating that the adsorption mechanism was influenced by the dosage of adsorbent. Elovich model was suitable for the low dose of adsorbent while the pseudo-second-order kinetic model was more appropriate for the high dose of adsorbent. The adsorption of MB onto biochar was governed by chemisorption as well as bulk and surface diffusion, and was mainly controlled through the chemisorption. The adsorption kinetics of MB from leaf derived biochar could be well described by a first-order, two-compartment model under the dose of leaf derived biochar. MB adsorption onto leaf derived biochar was likely controlled by heterogeneous processes with multilayer adsorption, and the process could be governed by multiple mechanisms through the analysis of adsorption isotherms.
Calculation and Analysis of the Effective Utilization Coefficient of Irrigation Water in Kaizhou District of Chongqing
Authors: Zhu Guangping , Xu Zongjiang , Liu Shujing , Zhang Weihua 
Published: September 2020

Abstract
The paper takes Kaizhou District of Chongqing as the research object, and 6 sample irrigation districts were selected as a representative. And calculate the effective utilization coefficient of irrigation water in the sample point irrigation area of Kaizhou District by using the head-tail method. The effective utilization coefficient of irrigation water in the whole district is based on that of in the sample irrigation area. Through statistical analysis, it is concluded that the effective utilization coefficient of irrigation water in Kaizhou District in 2019 is 0.4994.The research results can effectively support the assessment of the most stringent water resources management system in Kaizhou District, and can also provide a certain reference for the development of agricultural efficient water-saving irrigation.
Review on Fatigue Performance of Aluminum Alloys after Creep Age Forming
Authors: Yang Dalian , Liang Mou , Miao Jingjing , Zhang Hongxian 
Published: September 2020

Abstract
The process and characteristics of creep age forming technology was introduced. The influence of the creep age forming process on the fatigue performance on aviation aluminum alloy was discussed. Researches from three aspects were reviewed respectively–the fatigue damage mechanism of the creep age forming material, the influence of creep age forming process parameters on the performance of material fatigue, and creep age formed material life prediction mode. The trend of the creep age forming technology and the problems that may exist in its application in the field of aerospace were analysed. Finally, the major research direction was pointed out that fatigue properties of aluminum alloy materials and components based on the creep age forming technology should be studied deeply.
Study on Dispersant of Hydrogen Peroxide-Oxalic Acid Polishing Slurry in Chemical Mechanical Polishing of 304 Stainless Steel
Authors: Wang Yongsheng , Xu Rui , Wang Yipu , Wang Zhankui , Su Jianxiu 
Published: September 2020

Abstract
Flexible display has become a research hotspot for next-generation display technology. Stainless steel materials will become one of the main materials for flexible large-size display substrates, and chemical mechanical polishing (CMP) technology will be one of the most practical processing technologies to achieve super-smooth, non-destructive surface of stainless steel material. In this paper, through a series of experiments, the material removal rate and surface roughness of hydrogen peroxide oxidizer under different dispersants and different dispersant contents were studied. The results shown that when the content of dispersant sodium hexametaphosphate is 1.2% wt, the material removal was the largest, which was 146nm / min. the surface roughness after CMP was relatively low, Ra = 10nm. Sodium hexametaphosphate was selected as the dispersant of the solution. The research results provided a reference for further study of 304 stainless steel chemical mechanical polishing fluid.
Rapid Crack Detection Method of High-grade Cement Concrete Pavement
Authors: Ying Hong , Tian Wenkang , Li Jiaxin , Dong Haoyin 
Published: September 2020

Abstract
A new fast automatic repaired crack detection method of high-grade cement concrete pavement was realized through inhibition of groove, image enhancement, crack extraction and crack stitching in the low-resolution images using wavelet decomposition on the basis of in-depth feature analysis of repaired cracks. In addition, the modified crack identification algorithms were discussed in detail with joints, strip stains and traffic markings. It has significantly improved the processing speed by reducing image resolution and the applying one-dimensional convolution template instead of two-dimension. Large sample tests showed that recognition rate close to 94%.
Evidence of Polarons and Bipolarons in a Chemically Pressurized BiAlErCCeOy: A Monte-Carlo ion Bombardment Approach
Authors: M.E. Emetere , S.A. Afolalu 
Published: September 2020

Abstract
The polarons and bipolarons theory of superconductivity has gained so much recognition in under-doped and over-doped cuprates compound. However, the dynamics of polarons and bipolarons in both aforementioned settings is a little trivial owing to the established theories of electron-phonon interactions. In this study, we investigated the role of polarons and bipolarons in a chemically pressurized compound i.e., using Monte Carlo ion bombardment approach was 99999 ions were used in the experiment. It was observed that 4995 ions was used break the first layer of the material. The remaining 95004 ions oscillates within an equilibrium that suggest the presence of a periodic lattice i.e., in whom condensate flows without resistance. Based on this discovery it is suggested that BiAlErCCeOy may be a superconductor.
A Geometric Parameter Study of Re-Entrant Honeycomb Obstruction Block
Authors: Chen Luning , Wang Shuai , Zhou Kaifa , Li Zhong , Guo Dongling 
Published: September 2020

Abstract
As a kind of protective equipment, obstruction block is playing an important role in traffic accidents. In this work, a novel re-entrant honeycomb obstruction block (RHOB) with negative Poisson’s ratio was proposed. The energy-absorbing performances under static compression were examined and the influences of re-entrant angle, α material thickness t and aspect ratio γ on deformation behaviours of RHOB were investigated with finite element method (FEM). It is demonstrated that RHOB has distinguished bearing capacities and energy-absorbing properties compared to traditional honeycomb obstruction block (THOB). Besides, with the reduction of re-entrant angle α, the negative Poisson’s ratio of RHOB is decreased. Also, RHOB has notable bi-directional stabilities with a proper range of aspect ratio γ. And the increasing material thickness t enhances stiffness of RHOB. These findings highlight that a well-constructed re-entrant honeycomb obstruction block has extraordinary mechanical properties and can be widely applied in practical engineering.