bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preparation of Gamma Polyglutamic Acid (Γ-PGA)/Gelation Composite Nanoparticle and Application on Osmanthus Fragrance Slow-Release
Authors: Ma Xia , Zhao Shuai , Chen Yuxi , Chen Shiwen 
Published: October 2019

Abstract
In order to extend the incense period, to improve the stability and processability of osmanthus fragrance. It has not reported to use γ-PGA/Gelatin nanoparticle preparate coated fragrance. This research used γ-PGA/Gelatin nanoparticles after embedding essence, observed its property index. γ-PGA/Gelatin nanoparticle was investigated with respect to its optimum experiment process and microencapsulation technology. Through coagulation precipitation, which is an ionic self-assembly process, a large amount obtained of non-toxic and edible. Thermogravimetric analysis uncovered that fragrance-γ-PGA/Gelatin nanoparticles were surprisingly well conserved at rapidly increasing temperature. E-nose measurement revealed fine stability of scent. The yield was obtained as 41.6g/L which increased by 32.9% under optimized conditions and less waste was created. As the temperature increased from 0°C to 200 °C, the coated fragrance lost only by 11% while bare fragrance molecules almost fully evaporated. The unchanged and stable scent and a superior ability of heat resistant were attributed to the nano-size effect of fine structure and good characteristics of the incorporation of γ-PGA and gelatin.
Research on Green Synthetic Iron Nanoparticles
Authors: Ren Jingyi 
Published: October 2019

Abstract
For the last few years, nanoscience and nanotechnology are developing fast, and the use of green synthesis technology to prepare green nanoparticles has attracted widespread attention. Plants have become a substitute for various toxic agents, such as borohydrides, as compared to various toxic physical and chemical preparation methods. Moreover, plants have the preponderance of convenience and source, low cost and environmental protection. Moreover, the use of green synthesis technology not only avoids the use of chemical agents, but also reduces environmental pollution caused by toxic substances generated during the preparation process. Therefore, the preparation of nanoparticles by green synthesis technology is one of the most interesting areas to study. In this paper, focuses on the green synthesis of iron nanoparticles using papaya (melon) Nakai.
Synthesis and properties of Non-isocyanate polyurethane Based on Aromatic amine
Authors: Liang Hongqin , Gao Qun 
Published: October 2019

Abstract
Non-isocyanate polyurethane (NIPU) was synthesized via cyclic carbonate(DiCC), which was synthesized throguh the thiol-ene click reaction that has high selectivity and orientation, and aromatic diamine, which is one alternative for preparing conventional polyurethane without isocyanate. which as the promising materials in green and sustainable chemistry. It will replace the traditional polyurethane in the future chemical industry. A simple non-isocyanate route of synthesizing aromatic polyurethane has been studied in this paper. The chemical structures of DiCC and NIPU were characterized by fourier transform infrared spectrometer (FT-IR), 1H nuclear magnetic resonance spectra (1H NMR). The Mn and Mw of NIPU were measured up to 2964 g.mol-1 and 11528 g.mol-1 through gel permeation chromatography (GPC). Moreover, the initial decomposition temperature showing over 225°C and the shear strength reaching 2.38 MPa.
Research Status of Corrosion Al-Li Alloy in Acid Medium
Authors: Guo Yi , Huang Zhiyong , Jin Guofeng 
Published: October 2019

Abstract
Aluminium-lithium alloys commonly used in aerospace at home and abroad. In this paper, Al-Li alloys are classified into four categories according to their different elements. It also summarizes its corrosion in common acidic medium, and prospects for the development and research of the next generation of new Al-Li alloys.
Establishment of virtual vibrating sieve based on PFC3D
Authors: Liu Weidong , Gong Xing , Peng Zhenwei 
Published: October 2019

Abstract
The generation of virtual aggregate, close to realistic aggregate by numerical tool, is a key step in investigating the mechanical properties of asphalt mixture from the mesoscopic level. To verify the accuracy of assemblage of aggregate, this paper is based on the improved algorithm of random cutting technology previously proposed, using PFC3D editing program to establish a vibrating sieve, and the reliability of the improved algorithm was verified by sieving test. The results show that the improved algorithm of the irregular polyhedron random cutting technique proposed by the author can ensure that the gradation of the aggregate is consistent with the actual, and the sieving test can be used to evaluate the quality of the virtual aggregate based on PFC3D.
Template growth of ultrasmall Co3O4nanoparticles: a highefficiency electrocatalyst for alkaline oxygen evolution reaction
Authors: Wei Guijuan , Zhou Zhen , Zhao Xixia , An Changhua 
Published: October 2019

AbstractCo3O4, a representative spinel, has received widespread attention owing to its incomparable activity, low cost, and good stability, especially electrocatalytic performance for oxygen evolution reaction (OER). During the development of spinel synthesis, some emerging synthesis methods have been developed, and the transition from the high-temperature solid phase to the low-temperature liquid phase becomes a trend. Herein, we synthesized a class of novel small-sized Co3O4nanoparticles using ZIF-8 polyhedrons as templates. Interestingly, the achieved Co3O4nanoparticles possess smaller crystal sizes and good dispersibility, providing abundant active sites for OER reaction. When used as an OER electrocatalyst, the Co3O4-ZIF8 nanoparticles exhibit high efficiency with an overpotential of 270 mV at 1 mA cm−2and a small Tafel slope of 82.0 mV dec−1. This study provides new insights into the preparation of Co3O4-based nanoparticles for applications in catalysis, energy storage, and sensors.
Facile synthesis of Co-doped MoS2/TiO2 composite as an enhanced photocatalyst for hydrogen evolution
Authors: Zhao Xixia , Wei Guijuan , An Changhua , Zhang Jun 
Published: October 2019

Abstract
MoS2/TiO2 composite was prepared through a simple solvothermal route by combining the layered MoS2 and TiO2 nanosheets. Then, when preparing MoS2/TiO2 composite, cobalt acetate was added to prepared Co-doped MoS2/TiO2 photocatalyst. The experimental results show that the photocatalytic activity of the Co-doped MoS2/TiO2 composite is significantly improved compared with that of the undoped MoS2/TiO2 composite in the aspect of photocatalytic hydrogen production from water. The enhanced activity should be mainly ascribed to the more exposed active sites and broadened absorption region due to the doping of Co ions.
Study on Fermentation Process of Lactic Acid Bacteria Inoculated with Kimchi
Authors: Sui Ming , Zhang Yang , Rong Jiachao , Zhu Keyong , Wei Mingying 
Published: October 2019

Abstract
This paper uses cabbage as raw material to ferment kimchi through lactic acid bacteria inoculation. Using sensory score, total acid, pH and nitrite content as indicators, the main factors affecting the fermentation of lactic acid bacteria inoculated kimchi were investigated. The optimum technological conditions for inoculating fermentation of Kimchi lactic acid bacteria were determined by experiments. The lactic acid bacteria grow rapidly during the fermentation process and produce lactic acid, which lowers the pH value of the kimchi. The protein in the kimchi is decomposed into free amino acids, and the calcium ions are combined into inorganic salts, which have high nutritional value.
Kinetic Modeling Of A Bi-Enzyme Time-Temperature Indicator (TTI) Based on Different Parameters for Monitoring Food Product Quality
Authors: Li Qiang , Duan Min , Liu Wen , Dai Yue , Li Ren 
Published: October 2019

Abstract
Time-temperature indicator has been widely applied in the food industry. And, the theoretical study shows that if the time-temperature indicator is applied to monitor food, the activation energy of TTI temperature-dependent must be consistent with the activation energy of food quality loss. In this study, kinetics of absorbance and color changes in bi-enzyme were investigated as a function of storage temperature. Absorbance value was used to evaluate the enzyme reaction process under different temperature. Color change was evaluated in terms of the total color difference (DE). The results indicated that the time - temperature dependence of Absorbance and DE values followed a zero-order model. The Arrhenius equation adequately described the temperature dependence of the reaction rate constants for both absorbance and color parameters, respectively, from which the activation energies and rate constant at different temperature were obtained. There were significant linear correlations between absorbance, color and time parameter.
Genetic Engineering Antibody: Principles and Application
Authors: Zhao Lin , Wu Qi , Song Ruirui , Yun Zhenyu 
Published: October 2019

Abstract
Antibodies are proteins secreted by plasma cells of the immune system to bind antigens and trigger the immune effector activity. Genetic engineering antibodies are novel recombinant antibody molecules with improved antigen specificities and effector functions, which produced by the recombinant DNA and protein engineering technologies. The ability to produce antibodies that are directed against specific antigens drives scientific discovery and the development of clinical diagnosis and therapy. This paper provides an overview of the current studies on the principle, categories, generation and application of genetic engineering antibody.
Analysis of The Rule of Traditional Chinese Medicine for Treating Herpes Zoster
Authors: Wu Yanyi , Miao Mingsan 
Published: October 2019

Abstract

Objective To search the clinical literature of CNKI for the treatment of herpes zoster in Chinese medicine from January 2000 to December 2018, try to summarize the rules of clinical use of herpes zoster, explore potential drug combinations, promote the development of Chinese medicine for herpes zoster, and improve the quality of life of patients. Methods The clinical research literature on Chinese medicine for herpes zoster in CNKI from 2000 to 2018 was included and included in 80 articles.Excel 2013 and IBM SPSS Statistics 23 are used as statistical tools to perform statistical processing and association rule analysis on the selected external components. Results Among the 80 prescriptions, 13 articles were applied to the topical Chinese medicine, involving 9 kinds of traditional Chinese medicines; 67 cases were compound external application, the most used substrate was sesame oil; According to the analysis of the association rules, a total of 5 core drug pairs were obtained. Conclusion Traditional Chinese medicine believes that herpes zoster is often caused by stagnation of the liver. Therefore, more heat-clearing drugs are used in the treatment.At the same time, more choices of bitter and pungent drugs are used to achieve the effect of clearing and diarrhea, heat and divergence.In the external treatment, Borneolum Syntheticum-Indigo Naturalis is a common drug pair, and at the same time compatible with appropriate substrates, to enhance drug permeability, nourish the skin, introduce drugs into the liver, thereby enhancing the efficacy.
Liver Tumor Segmentation and Subsequent Risk Prediction Based on Deeplabv3+
Authors: Sun Yuchen , Shi Caicheng 
Published: October 2019

AbstractAs the largest glandular organ in the human body, liver has a large number of blood vessels and is connected with many important organs, such as spleen, pancreas and gallbladder, etc. The segmentation of liver and its lesions on medical images can help doctors accurately diagnose liver tumor and assess the probability of subsequent deterioration of the patient. Generally speaking, it is not only subjective but also wastes time if doctors rely on experience to manually analyze liver CT images. Therefore, it has been extensively studied in recent years. The segmentation of liver lesions is a kind of challenging task due to the low contrast ratio between the liver, lesions and nearby organs. To this end, we proposed to use the DeepLabV3+ semantic segmentation model based on the tensorflow architecture to segment the CT image of liver and locate the lesion positions. It combined deep convolutional neural networks (DCNNs) and probabilistic graphical model (DenseCRFs) and has been proven to have very good performance in a variety of computer vision tasks.
Numerical Simulation of Seawater Desalination Effect in The Micro-Nanochannel
Authors: Wu Rongrong , Li Zirui 
Published: October 2019

Abstract
In recent years, the study on the micro-nanochannel in the microfluidic technology has been made significant progress for which when inner walls charged can function similarly as ion permselective membrane. This article constructed one symmetric model with three parallel microchannels connected with two sets of nanochannel arrays and explained the mechanism of desalination within the channel by using numerical simulation method. For example, when the voltage difference, Vcn
, across the nanochannel array is equal to 10 VT
, the desalting efficiency can have reached nearly 90%; as the Vcn
is increased continuously to 20VT
, the desalination rate will definitely exceed 99% and as the Vcn
increases the rate increases more slowly.
Fabrication of porous boron nitride by using polyborazylene as precursor, polymethylmeth-acrylate as reaction agent
Authors: Zhong Wenli , Chen Xiaoqing , Bernard Samuel , Miele Philippe 
Published: October 2019

AbstractA novel process for the production of micro-molecular boron nitride foams has been developed through foaming of boron nitride preceramic polymer with the help of sacrificial microbeads of polymethylmethacrylate (PMMA), followed by pyrolysis under inert atmosphere. The process parameters of porous BN ceramics were studied by thermo gravimetric analysis, thermo mechanical analysis, X-ray diffraction, scanning electron microscopy, mercury porosimetry and elemental analysis. The microstructure and element composition of the porous ceramics were also studied by the above methods. The results showed that: when using polyborazylene from thermolization of borazine at 60°C as boron nitride precursor, PMMA microbeads with pore size of 25μm as sacrificial microbeads, adding into polyborazylene powder with 80 wt% in the foaming mixture. After warm-pressing the powders under 74MPa at 60°C, subsequently pyrolyzing the powders under ammonia to 1000°C then to 1450°C under nitrogen atmosphere, we can obtain boron nitride foams. Through scanning electron microscopy observation, X-ray diffraction analysis and porosity measurement, it was confirmed that the obtained boron nitride pieces were microcellular foams with homogeneous distributed pore size average at ∼19.15μm and had a mostly interconnected porosity of 79.06 vol%. The temperature should be increased to 1700-1800°C to prepare porous BN ceramic with a certain degree of crystallinity (layer spacing d002= 0.335-0.333 nm)
Research on numerical simulation and influence factors analysis for springback
Authors: Su Shaojuan , Liu Bin , Liu Bo 
Published: October 2019

Abstract
Accurately prediction the spring-back is great significance for plate cold forming. Finite element numerical simulation software is used to establish hull plate surface cold forming finite element model. The key technologies such as 3D model of finite element numerical simulation, the constitutive relation and cell division are analysed. And the amount of springback numerical simulation compared with the experimental results verify the credibility of the finite element simulation. At the same time the affection of material, sheet thickness and curvature radius for spring-back are analysed combined with simulation results to find the spring-back regular.
Ethyl Sorbate Was Prepared by Micro Reactor Low-Pressure
Authors: Yang Xingbing 
Published: October 2019

Abstract
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The distribution and performance of reclaimed asphalt pavement materials
Authors: Shi Ning , Su Huan 
Published: October 2019

Abstract
The asphalt content in reclaimed asphalt pavement has a great influence on the pavement performance of recycled asphalt mixture. However, few people have studied the distribution of asphalt content and its effect on the performance of reclaimed asphalt pavement. In this paper, the above problems are studied by means of SEM analysis, combustion test and other scientific means, and it is pointed out that the adherence rate of fine aggregate is an important index to measure the distribution of reclaimed asphalt pavement, and has a significant effect on the pavement performance of recycled asphalt mixture. In addition, this paper also analyzes the factors that have an important effect on the adherence rate of fine aggregates.
High Pressure Raman Study of Cs2CuCl4
Authors: Xue Kaiyuan , Chen Xi , Zhang Jiang , Mao Zhongquan , Tang Lingyun 
Published: October 2019

Abstract
High-pressure Raman spectra of frustrated antiferromagnet CS2CUCl4 is investigated in a diamond anvil cell. Four characteristic modes of CS2CUCl4 are observed at ambient conditions. As the pressure increases, the sample undergoes a structure phase transition at 5 GPa. After decompressing, the low-pressure Raman spectra are recovered, which indicates a reversible phase transition. We discussed the results in terms of the change of structure with pressure.
An analytical method for the determination of molybdenum in the end fitting of PE flexible composite pipe
Authors: Shao Xiaodong 
Published: October 2019

Abstract
The flexible composite pipe is a new type of polymer composite pipe with excellent corrosion resistance. Based on the color reaction of molybdenum with sodium thiocyanate, a photometric method for the determination of molybdenum in flexible composite pipe joint samples was established. The sample is dissolved by a sulfuric acid-phosphoric acid mixed acid, and stannous chloride is used as a reducing agent in a sulfuric acid-perchloric acid medium, and an orange-red complex is formed between molybdenum and sodium thiocyanate, and the absorbance, absorbance and molybdenum content are measured in mass. The linear relationship is in the range of 0.30%∼1.18%. This method uses a standard steel solution closer to the real sample to establish a working curve. The experiment shows that the method is accurate and simple. The molybdenum in the end fitting of flexible composite pipe was measured, and the results were satisfactory.
P-type InP thin films prepared by a non-vacuum process for photoelectrochemical water splitting
Authors: Chen Zequn , Chen Huihui , Zhao Qinfeng , Cao Chuanbao , Chen Zhuo 
Published: October 2019

Abstract
Photoelectrochemical (PEC) water splitting has been considered as a promising way to produce hydrogen production. Herein, we present an inexpensive and simple method for preparing high active p-type InP thin films photocathode with Zn doped at 500 °C. The amount of dopant was optimized to obtain the high PEC activity films. Electrical measurements indicated that the optimized film had the hole mobility of 350 cm2V−1s−1 and carrier density of 7.5×1017 cm3. Optical measurements demonstrated the high absorption of 90% in 450–750 nm, and the bandgaps of the samples ranged from 2.08 eV to 2.3 eV. PEC test showed that the onset potential of the optimized InP thin film was about 0.35 V vs. RHE and the saturation photocurrent of 8 mA/cm2 occurred at -0.3 V vs. RHE. These results indicated that our p type InP thin films were a potential material in PEC devices.
Experimental study on effect of loading rate on mechanical properties of CFRP equipment cabin skeleton laminates
Authors: Wang Yongyan , Feng Xuezhi , Zhang Xiangfeng , Liu Yaqi , Wang Hao 
Published: October 2019

Abstract
With the development of high-speed train technology, the dynamic problems caused by track irregularity and the stress maximization of CFRP equipment cabin skeleton at the edge of the beam are becoming increasingly prominent. In this paper, the tensile and compressive properties of carbon fiber laminates under different loading rates are studied by means of universal material mechanics experimental machine. The curves of tensile and compressive strength under different loading rates are obtained. The variation trends of tensile and compressive stiffness are analysed and the failure modes are summarized. It is found that the tensile strength of carbon fiber laminates does not change with the change of loading rate, but the compressive strength increases with the increase of loading rate in the range of 0 mm/min-6 mm/min and considering the influence of certain error. When the load is less than 30kN, the tensile stiffness of the material is not affected by loading rate. As the loading rate increases, the stiffness and compression stiffness increase.
A bio-signal monitoring sensor based on the microbending effect of fiber
Authors: Guo Xingqi , Li Zhaozhong , Yan Dongmei 
Published: October 2019

Abstract
In this paper, the focus of the study is the bio-signal monitoring sensor based on microbending effects and bending loss in fiber, the physical natures of the microbending effects and bending loss of multimode fiber are expounded through the microbending principle of fiber, and the effect of displacement on the microbending loss of fiber is explored and analyzed by deriving the microbending loss formula under the optical fiber theory. After putting the sensor on the back of a chair and letting the subject sit on the chair with the back on the sensor, the degree of microbend or radius of the fiber change as the change in chest volume during breathing results in the change in the external force, i.e., the force applied to the sensing part of the fiber. The physical change in the fiber induce changes in the amount of light energy transmitted in the fiber, causing optical loss. The respiratory rate is obtained by measuring the optical loss. The results show that the waveform displayed on the computer has good traceability performance, on which the frequencies of respiratory signals including normal breath, deep breath, and rapid breath can be distinguished. Experiments show that the sensor has good traceability feature and can automatically recognize the breathing conditions, with a signal-to-noise ratio of over 28dB
Failure Analysis of Hollow Spherical Plastic Products
Authors: Zhang Xinming 
Published: October 2019

Abstract
Hollow spherical plastic products, yoga balls, etc. are emerging sporting goods, and there is no systematic analysis on its burst property and corresponding testing methods. This paper systematically establishes the test methods for the weight bearing and explosion-proof of such products, and evaluates its safety from its defect’s factors. Also, in-depth analysis of the causes of its failure factors.
Ethylamine gas sensing properties of SnO2/rGO nanocomposite materials
Authors: Huang Shanshan , Song Jian , Huang Kaijin 
Published: October 2019

Abstract
Ethylamine has been widely used in production and life, but it needs to be monitored in real-time because of its important harm to human health. In this study, an SnO2/rGO nanocomposite gas sensitive material was synthesized by hydrothermal method, and the gas-sensing properties of ethylamine were tested by a self-made gas sensitivity test platform. The results show that the SnO2/rGO nanocomposite materials have good gas-sensitive performance of ethylamine and low detection limit (up to 1 ppm). Finally, the mechanism of gas sensitivity is proposed.