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The Influence of the Substitution Rate of Mixed Material in Green Concrete
Liu Wenyan,
Meng Yubing,
Lu Yue,
Wang Zhenlin,
Wang Yanzeng
Issue:
Volume 6, Issue 4, August 2018
Pages:
224-230
Received:
19 July 2018
Published:
20 July 2018
Abstract: In order to meet the needs of long-term sustainable development of the country, concrete greening has become more and more important in the environment of energy conservation and emission reduction and environmental protection. The use of concrete admixtures can greatly reduce the amount of cement, and it can improve the concrete's flexibility and improve the long-term performance of concrete. As the most common combination of mineral powder and fly ash, both of them can be used to complement each other in concrete, and make full use of energy efficiency to improve concrete performance and reduce production cost. How to better play the role of the mineral powder and fly ash is the problem that the concrete enterprise ADAPTS to The Times development to meet the market competition and needs the active research.
Abstract: In order to meet the needs of long-term sustainable development of the country, concrete greening has become more and more important in the environment of energy conservation and emission reduction and environmental protection. The use of concrete admixtures can greatly reduce the amount of cement, and it can improve the concrete's flexibility and ...
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Research on the Catalyst Used for Vertical Aligned Carbon Nanotube Arrays Prepared by Catalytic Chemical Vapor Deposition
Zhao Jingze,
Liu Rongjun,
Wang Yanfei,
Cao Yingbin
Issue:
Volume 6, Issue 4, August 2018
Pages:
231-242
Received:
19 July 2018
Published:
20 July 2018
Abstract: Process control of the oriented growth of vertical aligned carbon nanotube arrays and preparation of various ordered structure of carbon nanotube films is the major challenge for practical application. In order to better understand the parameters governing the catalytic properties of the catalytic nanoparticles, this paper summarizes the advances in the catalyst used for vertical aligned carbon nanotube arrays prepared by catalytic chemical vapor deposition, and the process parameters were considered to be able to control the particles size, composition, structure of catalyst. And investigations into the effects of during time, temperature, atmosphere in pre-treatment process, and the transition layer on catalyst morphology evaluation were further found that the catalyst particles size, distribution and density can be transformed through the surface diffusion and inter-layer diffusion influenced by those process.
Abstract: Process control of the oriented growth of vertical aligned carbon nanotube arrays and preparation of various ordered structure of carbon nanotube films is the major challenge for practical application. In order to better understand the parameters governing the catalytic properties of the catalytic nanoparticles, this paper summarizes the advances...
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Study on the Content of Dietary Fiber in Barley Leaf Powder
Songling Cai,
Zhanghua Liao
Issue:
Volume 6, Issue 4, August 2018
Pages:
243-248
Received:
19 July 2018
Published:
20 July 2018
Abstract: Barley leaves are rich in dietary fiber, vitamins, proteins, minerals and other nutrients. They are the most popular functional foods in Hongkong, Japan, North America and Southeast Asia in recent years. The dietary fiber has become a hot subject for the research of the food industry with its physicochemical property and the prevention of high blood fat, diabetes, obesity and other physiological functions. Therefore, this paper aims to study the content of dietary fiber in barley leaf powder and determine the content of soluble dietary fiber and insoluble dietary fiber by enzymatic-gravimetric method using the total amount of Megazyme dietary fiber test kit. Samples of five kinds of common barley(Yannong No. 1, Subei 4, Subei 9, Siyin 3 and Dongxin 1) were prepared. The results were as follows: the content range of insoluble dietary fiber was 1.71%-6.69%, the content range of soluble dietary fiber was 0.60%-2.26%, and the range of RSD value was 0.62%-7.97%. These experimental data and testing methods can provide reference for the scholars who study the nutritional efficacy of barley leaf powder, and further promote the market development of this kind of products in China.
Abstract: Barley leaves are rich in dietary fiber, vitamins, proteins, minerals and other nutrients. They are the most popular functional foods in Hongkong, Japan, North America and Southeast Asia in recent years. The dietary fiber has become a hot subject for the research of the food industry with its physicochemical property and the prevention of high bloo...
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Preparation of Poly (N,N-diphenyl-4-amine) as the Cathode and Its Electrochemical Properties
Chang Su,
Bing Han,
Yue Sun,
Guosheng Wang,
Lihuan Xu
Issue:
Volume 6, Issue 4, August 2018
Pages:
249-256
Received:
9 August 2018
Published:
10 August 2018
Abstract: Triphenylamine as well as its polymer have been applied in the fields of photoelectricity and energy storage. In this paper, the pyridine ring structure was introduced into the triphenylamine structure to successfully synthesize N, N-diphenyl-4-amine monomer (DPN), and the its single crystal was then cultured. And its homopolymer (PDPN) was further prepared by chemicaloxidation method. The obtained poly (triphenylamine) derivative-PDPN was used as cathode material to study its electrochemical and battery performance. As the result, the chemical structure of the monomer was confirmed by NMR, MS and single crstal analysis. And the chemical structure of PDPN was confirmed by infrared spectroscopy and ultraviolet spectroscopy. Furthermore, the battery performance test shows that PDPN electrode has two obvious voltage platforms in the voltage range of 4.1-4.3 V and 1.5-1.8 V, in which the initial discharge specific capacity was 92.3 mAh·g-1. After 50 cycles, its discharge specific capacity decreased from 92.3 mAh·g-1 to 73.2 mAh·g-1 with about 20.7% capacity loss.
Abstract: Triphenylamine as well as its polymer have been applied in the fields of photoelectricity and energy storage. In this paper, the pyridine ring structure was introduced into the triphenylamine structure to successfully synthesize N, N-diphenyl-4-amine monomer (DPN), and the its single crystal was then cultured. And its homopolymer (PDPN) was further...
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Preparation and Bending Strength of Micro-Laminated TiC/Ti Composites
Tan Youde,
Cheng Xingwang,
Xu Ziqi
Issue:
Volume 6, Issue 4, August 2018
Pages:
257-262
Received:
9 August 2018
Published:
10 August 2018
Abstract: Ceramic materials have some shortcomings such as intrinsic brittleness and poor reliability, which limit the application in the field of structure. The laminated composites are composed by ceramics and metals according to the principle of bionics, and the advantages of metals and ceramics can be excellently utilized to greatly improve the toughness and reliability of ceramic materials. At present, most of the methods are to prepare ceramic layers by using ceramic powders. This methods have the disadvantages of long preparation cycles and weak interface between ceramic and metal, and thus it is necessary to find a new synthesis method. Micro-laminated TiC/Ti composites were prepared by in-situ synthesis using Ti foils and graphite papers in this paper. The SPS and hot-pressing sintering were used respectively, and the microstructure and mechanical properties of the composite were compared. By comparison, the layered structure was obviously found after SPS and hot-press sintering at 1400°C, but much residues C affected the mechanical properties; Due to the middle of Ti melting after SPS sintering at 1500°C, the laminated structure could not be completely formed resulting in low strength. The laminated structure was well formed by hot-pressing sintering at 1500°C, and the micro-laminated TiC/Ti composite exhibited bending strength of 665.8±18MPa and fracture toughness of 23.81±1.2MPa·m1/2. However, the two sintering methods still need to be optimized.
Abstract: Ceramic materials have some shortcomings such as intrinsic brittleness and poor reliability, which limit the application in the field of structure. The laminated composites are composed by ceramics and metals according to the principle of bionics, and the advantages of metals and ceramics can be excellently utilized to greatly improve the toughness...
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Research on Filling Channel of ESC by Fixed Consumable Electrode Filling Method
Wang Jun,
Chang Guowei,
Chen Rui
Issue:
Volume 6, Issue 4, August 2018
Pages:
263-267
Received:
9 August 2018
Published:
10 August 2018
Abstract: This study takes the consumable electrode, slag bath, and ingot as investigated objects. Mathematical models is established based on the convection thermal transfer equation of the slag bath, the thermal conduction equation of the ingot, and the melt flowing equation,meanwhile the appropriate electromagnetic field, thermal boundary conditions are applied, The numerical simulation study on influence of process parameters on filling channels between metal pools in electroslag casting process with fixed consumable electrode filling method are performed by using large finite element analysis software ANSYS. Size of casting ingot is 400 x 70 x 400, the research show that when the current density of mobile consumable electrode is greater than or equal to 0.5 A/mm2, the electrode spacing is less than or equal to 0.15m, and the electrode thickness is greater than or equal to 0.035m, the two metal pools are connected，molten metal of moved consumable electrode casting successfully supply the metal pool of fixed consumable electrode through filling channel, make sure that casting is forming under stable electroslag conditions. the minimum sectional area of filling channel is increased with the increase of current density of the mobile consumable electrode and the cross-sectional area of the consumable electrode.
Abstract: This study takes the consumable electrode, slag bath, and ingot as investigated objects. Mathematical models is established based on the convection thermal transfer equation of the slag bath, the thermal conduction equation of the ingot, and the melt flowing equation,meanwhile the appropriate electromagnetic field, thermal boundary conditions are a...
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Research Progress and Application of Multiferroic Magnetoelectric Composite Thin Film
Ziwei Lian,
Jing Zhu,
Men Kuo
Issue:
Volume 6, Issue 4, August 2018
Pages:
268-275
Received:
9 August 2018
Published:
10 August 2018
Abstract: Magnetoelectric composites are room-temperature functional materials for magnetics-electric energy conversion, which can be applied in ME sensors, microwave devices, memories and so on. Multiferroic composite thin film of ferroelectrics and magnets have attracted ever-increasing interest with the application of thin film materials in microelectronic technology in most recent years. In this review, magnetoelectric (ME) responses as well as fabrication and properties of such multiferroic composite thin films are introduced. The potential applications in novel ME devices are discussed. Finally, the review concludes with a remark on the future possibilities and scientific challenges in this field.
Abstract: Magnetoelectric composites are room-temperature functional materials for magnetics-electric energy conversion, which can be applied in ME sensors, microwave devices, memories and so on. Multiferroic composite thin film of ferroelectrics and magnets have attracted ever-increasing interest with the application of thin film materials in microelectroni...
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Preparation of Ferricyanic Acid Doped Aryl Amine Copolymer and Its Electrochemical Properties
Lihuan Xu,
Jiaojiao Ma,
Yue Sun,
Pengju Guo,
Bing Han,
Guosheng Wang,
Chang Su
Issue:
Volume 6, Issue 4, August 2018
Pages:
276-282
Received:
9 August 2018
Published:
10 August 2018
Abstract: In this paper, five hybrid copolymers of HCF/PANI，HCF/P(ANI:pPD=5:1)，HCF/P(ANI:pPD=3:1)，HCF/P(ANI:pPD=1:1)，HCF/PpPD were prepared by in-situ synthesis using the prepared ferricyanic acid (HCF) as doping acid with electrochemical activity. The prepared hybrid material was further applied as cathode electrode to prepare lithium battery. And the structure, morphology, electrochemistry and battery performance of the prepared material were studied in detail. FTIR spectra show that hybrid materials have been successfully prepared. SEM results showed that with the increase of p-phenylenediamine monomer in aromatic amine copolymer, the morphology of hybrid materials gradually decreased from the granular morphology of HCF/PANI to a relatively flat stacking state. Cyclic voltammetric (CV) test showed that the redox reaction for arylamine polymer and HCF presented two obvious characteristic peaks. And the introduction of a small amount of p-phenylenediamine monomer caused the oxidation/reduction potential of hybrid material (HCF/P(ANI:pPD=5:1)) to be significantly close each other and the peak space to decrease. With further increasing the proportion of p-phenylenediamine monomer in aromatic amine copolymer, the oxidation peak and reduction peak of hybrid material move reversely to high potential and low potential respectively. Battery performance studies showed that the initial charge-discharge specific capacities of HCF/PANI，HCF/P(ANI:pPD=5:1)，HCF/P(ANI:pPD=3:1)，HCF/P(ANI:pPD=1:1)，HCF/PpPD were 191.3 and 103.5 mAh·g-1, 105.8 and 82.8 mAh·g-1, 86.9 and 73.9 mAh·g-1, 55.4 and 28.1 mAh·g-1, 19.2 and 12.6 mAh·g-1, respectively With the increase of p-phenylenediamine comonomers in hybrid materials, the cyclic stability of electrode materials has been improved to some extent. At the same time, the hybrid material has good rate retention.
Abstract: In this paper, five hybrid copolymers of HCF/PANI，HCF/P(ANI:pPD=5:1)，HCF/P(ANI:pPD=3:1)，HCF/P(ANI:pPD=1:1)，HCF/PpPD were prepared by in-situ synthesis using the prepared ferricyanic acid (HCF) as doping acid with electrochemical activity. The prepared hybrid material was further applied as cathode electrode to prepare lithium battery. And the struc...
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Principles and Applications of Magnetic Sensors Based on Magnetic-Sensitive Materials
Kuo Men,
Jing Zhu,
Ziwei Lian
Issue:
Volume 6, Issue 4, August 2018
Pages:
283-289
Received:
9 August 2018
Published:
10 August 2018
Abstract: The core of most magnetic sensors are magnetic-sensitive materials. Magnetic-sensitive materials are sensitive to magnetic field, which could convert magnetic energy into other forms of energy. Magnetic-sensitive materials are including magnetoresistance materials, multiferroic materials, soft magnetic materials and so on. Different magnetic-sensitive materials are applied to different kinds of magnetic sensors, which are used to measure micro-magnetic fields under different application environments and precision requirements. The performance of magnetic-sensitive materials has become the limiting factor for the development of such magnetic sensors. In this paper, the principle and application of magnetic sensors based on magnetic sensitive materials are described.
Abstract: The core of most magnetic sensors are magnetic-sensitive materials. Magnetic-sensitive materials are sensitive to magnetic field, which could convert magnetic energy into other forms of energy. Magnetic-sensitive materials are including magnetoresistance materials, multiferroic materials, soft magnetic materials and so on. Different magnetic-sensit...
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Multi-Granulation Decision-Theoretic Rough Set Based on Maximal Consistent Relation
Fan Bingbing,
Li Jin,
Chen Xicheng,
Liu Mengbo,
Gu Jinghao,
Liu Ming
Issue:
Volume 6, Issue 4, August 2018
Pages:
290-297
Received:
9 August 2018
Published:
10 August 2018
Abstract: In incomplete information system, combining the advantages of maximal consistent relation and multiparticle theory, this paper proposed the multi-granulation decision–theoretic rough set based on maximal consistent relation based on consistent relation. Firstly, this paper define variable precision maximal consistent relation and dual-variable maximal consistent relation respectively for two kinds of incomplete information systems with different value types. Then, this paper establish optimistic and pessimistic multi-granulation decision–theoretic rough set model by replacing the equivalence relation with the maximal consistent relation in multi-granulation decision-theoretic rough set. Finally, it is proved that the maximum compatible relationship can improve the classification accuracy effectively based on model of optimistic maximal consistent relation, and this paper prove that the robustness of the classification can be improved by multiple classification thresholds at Multi-granulation.
Abstract: In incomplete information system, combining the advantages of maximal consistent relation and multiparticle theory, this paper proposed the multi-granulation decision–theoretic rough set based on maximal consistent relation based on consistent relation. Firstly, this paper define variable precision maximal consistent relation and dual-variable maxi...
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Fundamental Frequency (F0) Fusion Transformation-Based on BLSTM for Voice Conversion
Miao Xiaokong,
Zhang Xiongwei,
Sun Meng
Issue:
Volume 6, Issue 4, August 2018
Pages:
298-305
Received:
9 August 2018
Published:
10 August 2018
Abstract: For the current speech conversion algorithms based on neural networks, the method of using the mean-variance linear transformation fundamental frequency (F0) can easily cause some “mechanical tones” and strange adjustments in the converted speech, and the similarity of the transformed speech is low. This paper proposes the nonlinear mapping of F0 using BLSTM (Bi-directional Long Short Term Memory) neural network, and merging the structural information with the source fundamental frequency. Firstly, the stable BLSTM network is trained through the paired fundamental frequency F0, and then the final required fundamental frequency is obtained by fusing the converted F0′ and the original structural information F0, and finally the speech synthesis is performed, thereby improving the similarity between the converted speech and the target speech. degree. At the same time, it is verified that the method proposed in this paper can reduce the mechanical sounds of speech conversion to a certain extent and improve the similarity of the converted speech.
Abstract: For the current speech conversion algorithms based on neural networks, the method of using the mean-variance linear transformation fundamental frequency (F0) can easily cause some “mechanical tones” and strange adjustments in the converted speech, and the similarity of the transformed speech is low. This paper proposes the nonlinear mapping of F0 u...
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Whitening Efficacy Evaluation of the Multi-Herb
Lu Yi-na,
Yang Ya-di,
Lin Meng-gan,
Xie Zhi-yong
Issue:
Volume 6, Issue 4, August 2018
Pages:
306-311
Received:
9 August 2018
Published:
10 August 2018
Abstract: The multi-Herb (mH) was prepared from 4 plant extracts including Phyllostachis Bambusoides, Sophora Flavescens Root, Lycium Barbarum Fruit and Pyracantha Fortuneana Fruit through ethanol extraction, filtration and concentration. Focus on tyrosinase activity and melanin content, mH repressed the activity of tyrosinase from mushroom and B16F1 cells to 49.2% and 76.2% respectively, at concentration of 3%. mH reduced the cellular melanin synthesis to 98.2% in nature and 92.1% under α-MSH induced melanogenesis respectively, showed a dose-dependently inhibitory effect. The human-skin test results showed that the skin melanin content (MI value) was significantly reduced by 12.3% after 7 weeks application of a cream containing 5% mH, better than arbutin of 2% concentration. All the results indicate that mH displays a good effect for whitening.
Abstract: The multi-Herb (mH) was prepared from 4 plant extracts including Phyllostachis Bambusoides, Sophora Flavescens Root, Lycium Barbarum Fruit and Pyracantha Fortuneana Fruit through ethanol extraction, filtration and concentration. Focus on tyrosinase activity and melanin content, mH repressed the activity of tyrosinase from mushroom and B16F1 cells t...
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