bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on dielectric barrier discharge in nanostructured electrode materials
Authors: Zhang Dongpeng 
Published: August 2020

Abstract
In order to conduct dielectric barrier discharge experiments under normal pressure and low voltage (less than 15000V), an ac high-voltage differential power supply based on series-parallel LCC-type(Inductor L and capacitor Cr, Cp are connected in series and parallel structure) resonant converter is designed. The designed power supply prototype has the advantages of small size, light weight and easy operation. The power supply prototype has been tested on loads for many times. Its output repeatability is good and it can continuously output stable sinusoidal ac voltage. At the same time, the prototype also has a strong ability to resist electromagnetic interference. Moreover, the dielectric barrier discharge experiment is carried out using copper electrode with zinc oxide nanowires and copper electrode without zinc oxide nanowires. The experimental results show that the starting voltage of the test group with nanostructures growing on the surface is smaller, about 2500V lower than that of the latter under the same dielectric conditions and discharge spacing. In terms of the discharge phenomenon, the former has a better discharge process consistency, the non-nanostructured electrode discharge is unstable, and the difference in the discharge process is obvious.
Melting behavior of PET with sulfonated polypropylene wax
Authors: Xin Ming-liang , Yin Xiang-Bin , Da Jing , Li Mao-dong , Li Hua , Wu Wen-dong 
Published: August 2020

AbstractThe effects of sulfonate group and composition of sulfonateionomer (SPSN) with low molecular mass on the morphologies, non-isothermal crystallization and melting behaviors of poly(ethylene terephthalate) (PET) in PET/SPSN blends are investigated by thermogravimetric analysis (TG). Sulfonateionomer (SPSN) is synthesized from polypropylene wax by two steps, and at 300°C the mass loss of SPSN is only 1wt % with a good thermal stability. The result shows that sulfonateionomer could is an effective nucleating agent.
Study on dynamic mechanical properties of viscoelastic damping materials based on finite element theory
Authors: Guo Tie-neng , Yang Tao , Gu Yun-chao 
Published: August 2020

Abstract
The relationship between the vibration parameters and the dynamic mechanical properties of the rubber material is established through the vibration reduction experiment and the finite element theory of the ZN-35 silicon rubber damper, which provides a new method for the prediction of the wide-band dynamic mechanical properties of the viscoelastic damping material.
The effect of antioxidant 1010 on the thermo-oxidative aging properties of polycarbonate/acrylonitrile–butadiene–styrene blends
Authors: Zhu Z F , Wen J , Zhang Q , Yuan S , Yin L 
Published: August 2020

Abstract
In this research, the thermo-oxidative aging properties of PC/ABS with different content of antioxidant 1010 were studied. The ΔE value of the sample with 1wt% antioxidant 1010 was 35.3% lower than that without antioxidant before and after 500h aging. After aging for 500h, the elongation at break and impact strength of samples with 1wt% antioxidant 1010 decreased by about 76% and 42% respectively, which were 8% and 5% higher than those without antioxidant. The results of ATR-FTIR spectrum shown that antioxidant 1010 reduced the degradation of rubber phase (PB) in ABS caused by thermo-oxidative aging.
Experimental Study on the Dry Shrinkage Properties of Nano Concrete Materials
Authors: Li Wei , Wang Xiao-chu , Xiong Long , Huang Zhen 
Published: August 2020

Abstract
This paper focuses on the effect of adding nano-CaCO3 and nano-SiO2 to concrete with different dosages on its shrinkage performance, studies have shown that: nano materials on the drying shrinkage of concrete will produce certain negative effect, make the drying shrinkage of concrete increases, so need through the selection of the aggregate, the optimization of mixture ratio and effective maintenance means to reduce the drying shrinkage of concrete, such as the nano materials minimizes the negative effect on the drying shrinkage of concrete; In this paper, the effects of two kinds of nano materials on concrete properties are comprehensively compared. The results show that the improvement of mechanical properties and durability of concrete by NS is slightly better than that of NC under the appropriate dosage, but the selling price of NC is much lower than that of NS. Besides, the fluidity of concrete after adding NC is better than that of concrete mixed with NS, and the drying shrinkage rate of concrete at each age is lower.
Experimental Study on Mechanical Properties of Nano Concrete Materials
Authors: Li Wei , Wang Xiao-chu , Xiong Long , Huang Zhen 
Published: August 2020

Abstract
This paper focuses on the influence of nano-CaCO3 and nano-SiO2 materials on the mechanical properties of concrete mixed with different dosages. Through the compressive strength and flexural strength tests of nano concrete, the flexural and compression ratio of each sample are calculated, and the influence of nano materials on the flexural and compression ratio of concrete is analyzed. It is proved that nanometer materials with very small particle size and large surface area have excellent properties that ordinary materials do not possess. It can be used as admixture of concrete to improve the mechanical properties and durability of concrete.
Evaluating the anti-corrosion behavior of hybrid zirconium-polyethyleneimine layer by mean of electrochemical method
Authors: Yang R , Xu P Y , Jing Y , Xin G 
Published: August 2020

Abstract
Zirconia conversion coating as an eco-friendly treatment technology is the most promising method of replacing traditional phosphating technology. A new kind of zirconia/polyethyleneimine composite coating was fabricated on carbon steel. Potentiodynamic polarization, electrochemical impedance spectroscopy and salt spray test analyses were used to evaluate the corrosion behavior of samples in 3.5wt% NaCl solution. Scanning electron microscope was used to characterize the surface morphology of the samples. Results showed that zirconia coating after polyethyleneimine (PEI) treatment generated a protective layer through combination of physisorption and chemisorption, which enabled the new composite coating to perform much better than single zirconia coating. The zirconium-polyethyleneimine layer demonstrated the best anti-corrosion performance with the lowest corrosion current and highest polarization resistance. Overall, this study established a promising anticorrosion method involving the production of zirconia coating as an interlayer prior to forming PEI coating on a substrate.
Influence of steel pipe on mechanical properties of airport cement concrete pavement
Authors: Lai Y , Ma D X , Wang P , Liu Y , Su J X , Xiang H L , Liu C L 
Published: August 2020

Abstract
This paper studies the influence of steel pipe on mechanical properties of airport cement concrete pavement. The flexural and compressive strength of concrete are analysed when different steel pipes are added into ordinary concrete. It is shown that the flexural and compressive strength of ordinary concrete are higher than those of concrete containing steel pipe at the age of 7 and 28 days. The compressive strength of concrete decreases more than the flexural strength when the steel pipe is added into concrete. The flexural strength of concrete containing Φ32 seamless steel pipe, DN32 welded steel pipe and DN40 welded steel pipe can still meet the mechanical properties of airport concrete. Compared with DN32 welded steel pipe and DN40 welded steel pipe, the selection of Φ32 seamless steel pipe is beneficial to the mechanical properties of concrete.
Hot compression constitutive equation of Mg-5Sm-2Y alloy
Authors: Qing Zhang , Haining Wang , Ying Wang , Ping Li 
Published: August 2020

Abstract
The hot compression tests were carried out at deformation temperatures ranging from 300 to 450°C and strain rates ranging from 0.01 to 1 s−1, and the hot deformation behavior and constitutive equation of Mg-5Sm-2Y magnesium alloy was investigated. The results showed that the flow stress of the alloy is affected greatly by deformation temperature and strain rate during the hot compression deformation. The flow stress of the alloy decreases with the increase of deformation temperature at the same strain rate, and decreases with the decrease of strain rate at the same deformation temperature. The constitutive equation for hot compression flow stress of the alloy is established in a hyperbolic-sine form. In the equation, the stress index n is 7, and the hot deformation activation energy Q is 212 kJ/mol.
Electrochemical properties study on NCM622 by in suit modification of Mg and F
Authors: He Rui , Bai Xue , Wei Aijia , Zhang Lihui , Liu Zhenfa 
Published: August 2020

Abstract
With the rapid development of portable electronic products and electric cars, higher requirements are put forward for the performance of high energy density lithium ion battery. Nickel-rich layered metal oxides with higher energy density and lower raw material cost are considered as ideal cathode materials for lithium ion batteries. However, the structural defects and unstable interfacial chemical properties make the electrochemical properties degrade and reduce the safety of the material. Based on the previous work, this project synthesized NCM622 materials by solid phase method, and studied the influence of F, Mg and MgF2 on the comprehensive electrochemical properties of NCM622 materials. The relationship between microstructure and electrochemical properties of the materials was studied..
Investigation of milling stability based on a cutting force segmentation model
Authors: Jin G , Liu H , Zhang XY , Sun GX 
Published: August 2020

Abstract
The chatter vibration is the major limiting factor for higher metal removal rates in milling process. This paper proposed an integral model of cutting force with helical cutter considering the sectional characteristics of cutting force. Based on the model, the variation law of the upper and lower limit angles of the cutting process under different radial cutting depths is analysed. The results show that the shape of cutting force for each tooth has a characteristic of three sections. Moreover, the process dynamic equation of thin-walled parts cutting is constructed based on the model. And, the stability lobe diagram is obtained by semi-discretization method. The time-domain simulations are carried out in different cutting parameters around the stable island to verify the correctness of the prediction method. The results show that the method has good ability to predict the cutting stability of cutters with helix angle.
Self-lubricating and Antifriction Characteristics of Three-dimensional Co-continuous Network Graphite / Cast Steel Composites
Authors: Chunyi ZHAN , Shengshan FENG , Weifeng WU , Qingqing BIAN , Jianli CHEN , Dong HUANG , Zebin WEI , Dabao LI , Zehui CHEN , Jincheng ZENG , Shuixin TAN , Guancheng LI 
Published: August 2020

Abstract
The infiltration casting method is used for the preparation of three-dimensional co-continuous network graphite / cast steel composite material in atmospheric pressure. The friction and abrasion behavior of composite specimen in condition of dry sliding friction are investigated by peg-tray friction abrasion tester. The anti-wear mechanism of composite material is discussed. The results show that the relative wear resistance of the composite material is 6.5～7.1 times of graphitic cast iron, and average friction coefficient is 60.5～73.3% of graphitic cast iron. The composite material provides with good self-lubricating and anti-friction property in condition of dry sliding friction.
Liquid crystal block copolymer micelles with aggregation-induced emission from corona chains
Authors: Wang Siyu , Luo Yunjun , Li Xiaoyu 
Published: August 2020

Abstract
Aggregation-induced emission (AIE) is a very useful tool to study the self-assembly process of block copolymers. However, most of the studies have been focused on the AIE process of the micelle core block. In this study, a typical AIEgen tetraphenylethylene (TPE) was introduced into the corona-forming block of the liquid crystal diblock copolymer. Although the coronal chains were still soluble in solution and the TPE group content was very low, due to the highly crowded and stretched chains, there was significant fluorescence emission after micellization. This provides a new research direction for the AIE process of diblock polymers and is of great significance for the study of the star micelle models.
The potential use of fish collagen as a new functional materials due to its good immune-compatibility
Authors: Liu Chao , Sun Jiao 
Published: August 2020

AbstractAs a marine-derived biological macromolecule, fish collagen is attracting more and more attention for its potential application in the biomedical field. Currently, there is no systematic evaluation of immuno-compatibility of fish collagen in vivo. In the present study, 200 mg/kg hydrolyzed tilapia fish collagen (HTC) was injected subcutaneously into mice for 21 consecutive days. To evaluate the effects of HTC on spleen lymphocytes proliferation, cell counting assay (CCK-8) was performed. Flow cytometry was applied to study the effect of HTC on the apoptosis of spleen lymphocytes. Mouse serum immunoglobulin G (IgG) and immunoglobulin M (IgM) were determined by Enzyme-linked immunosorbent assay (ELISA). The results showed no significant difference for the proliferation and apoptosis of spleen lymphocytes between the HTC group and the control group (subcutaneously injected with 0.9% NaCl for 21 consecutive days). And there was no significant difference for serum IgG and IgM levels between the control group and HTC group. The above results showed that the hydrolyzed tilapia fish collagen possesses good immune-compatibility, which can potentially be used as biocompatible implanted biomaterials in vivo.
Sb2MoO6 Decorated on Graphene as an Anode Material for Lithium/Sodium-Ion Batteries
Authors: Wu Q , Wang H G 
Published: August 2020

Abstract
The ternary materials have attracted wide attention owing to the synergistic effect and multi-component flexibility. Herein, Sb2MoOe decorated on graphene (Sb2MoO6/RGO) is synthesized and proved to be a novel anode material for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). Benefitting from the conductive networks of graphene and the synergistic effect between two metal elements, Sb2MoO6/RGO shows the improved the electrochemical performance, including a high reversible capacity of 967.2 mAh g−1 for LIBs and 349.4 mAh g−1 for SIBs at 100 mA g−1, an excellent cycle performance of 606.8 mAh g−1 for LIBs after 55 cycles and 264.9 mAh g−1 for SIBs after 100 cycles at 100 mA g−1. Therefore, Sb2MoO6/RGO has a wide application prospect for both the LIBs and SIBs.
The Effect of Cr2O3+Al Addition on the Microstructure of Combustion Electrode Joint
Authors: Shen Chao , Li Zhizun , Sun Liming , Han Fengqi 
Published: August 2020

Abstract
During manual self propagating welding, there are segregation phenomena of iron rich phase and copper rich phase. Cr element can restrain the segregation phenomenon of iron rich phase and copper rich phase. Cr is a strong ferrite element. When the amount of Cr2O3 + Al in the flux is less than 3wt%, with the increase of &2O3 + Al content, the microstructure of the weld alloy tends to be homogenized and the mechanical properties of the welded joint improve; when the amount of Cr2O3 + Al in the flux is more than 4wt%, Cr and C form Carbides are easy to produce microcracks in the fusion zone and reduce the mechanical properties of the joint. The best addition of Cr2O3 + Al in the flux is 3wt% ~ 4wt%.
Can the law of maximum entropy production describe the field-induced orientation of ellipsoids of rotation?
Authors: Gimsa Jan 
Published: August 2020

Abstract
Electrostatic approaches are successful in explaining the experimentally observed field-induced orientations of the axis with the highest Clausius-Mossotti factor. For conductive or nonconductive, prolate or oblate spheroids, this is always the longest axis when different frequency-dependent dispersions of their effective conductivity along the three principal axes are neglected. Here, it is shown that these orientations correspond to the ‘law of maximum entropy production’ (LMEP) by comparing the axes-ratio dependencies of the torques calculated with the electrostatic approach with the effective conductivity differences between a suspension with field-oriented and randomly oriented objects. At low volume fraction, the obtained conductivity differences, which enter the LMEP, predict almost exactly the torque curves when plotted over axis ratio of the objects. Since the field-induced orientation at constant field strength increases the effective conductivity, the suspension system obviously does not behave according to the Prigogine principle, which would demand the minimization of energy dissipation and entropy production through object orientation. However, the Prigogine principle requires the suspension system to be close to equilibrium in its linear range. These conditions must be rejected if the LMEP is to be applied. Apparently the LMEP provides a phenomenological criterion for axis orientation, even though it is not yet clear whether and how increased conductivity, power dissipation and entropy production can also be introduced as driving forces at the single object level. However, the results also indicate that the disregard of energy dissipation may not be a problem in the electrostatic description of field-induced object orientation.
COVID-19 antibody therapeutics tracker: a global online database of antibody therapeutics for the prevention and treatment of COVID-19
Authors: Yang Lifei , Liu Weihan , Yu Xin , Wu Meng , Reichert Janice M , Ho Mitchell 
Published: August 2020

Abstract
Facing the COVID-19 global healthcare crisis, scientists worldwide are collaborating to develop prophylactic and therapeutic interventions against the disease. Antibody therapeutics hold enormous promise for the treatment of COVID-19. In March 2020, the Chinese Antibody Society, in collaboration with The Antibody Society, initiated the “COVID-19 Antibody Therapeutics Tracker” (“Tracker”) (https://chineseantibody.org/covid-19-track/) program to track the antibody-based COVID-19 interventions in preclinical and clinical development globally. The data are collected from the public domain and verified by volunteers on an ongoing basis. Here, we present exploratory data analyses and visualization to demonstrate the latest trends of COVID-19 antibody development, based on data for over 150 research and development programs and molecules included in the “Tracker” as of 8 August 2020. We categorized the data mainly by their targets, formats, development status, developers and country of origin. Although details are limited in some cases, all of the anti-SARS-CoV-2 antibody candidates appear to target the viral spike protein (S protein), and most are full-length monoclonal antibodies. Most of the current COVID-19 antibody therapeutic candidates in clinical trials are repurposed drugs aimed at targets other than virus-specific proteins, while most of these virus-specific therapeutic antibodies are in discovery or preclinical studies. As of 8 August 2020, eight antibody candidates targeting the SARS-CoV-2 S protein have entered clinical studies, including LY-CoV555, REGN-COV2, JS016, TY027, CT-P59, BRII-196, BRII-198 and SCTA01. Ongoing clinical trials of SARS-CoV-2 neutralizing antibodies will help define the utility of these antibodies as a new class of therapeutics for treating COVID-19 and future coronavirus infections.
A native annual forb locally excludes a closely related introduced species that co-occurs in oak-savanna habitat remnants
Authors: Johnson Jens C , Williams Jennifer L 
Published: August 2020

AbstractDespite the ubiquity of introduced species, their long-term impacts on native plant abundance and diversity remain poorly understood. Coexistence theory offers a tool for advancing this understanding by providing a framework to link short-term individual measurements with long-term population dynamics by directly quantifying the niche and average fitness differences between species. We observed that a pair of closely related and functionally similar annual plants with different origins—native Plectritis congesta and introduced Valerianella locusta—co-occur at the community scale but rarely at the local scale of direct interaction. To test whether niche and/or fitness differences preclude local-scale long-term coexistence, we parameterized models of competitor dynamics with results from a controlled outdoor pot experiment, where we manipulated densities of each species. To evaluate the hypothesis that niche and fitness differences exhibit environmental dependency, leading to community-scale coexistence despite local competitive exclusion, we replicated this experiment with a water availability treatment to determine if this key limiting resource alters the long-term prediction. Water availability impacted population vital rates and intensities of intraspecific versus interspecific competition between P. congesta and V. locusta. Despite environmental influence on competition our model predicts that native P. congesta competitively excludes introduced V. locusta in direct competition across water availability conditions because of an absence of stabilizing niche differences combined with a difference in average fitness, although this advantage weakens in drier conditions. Further, field data demonstrated that P. congesta densities have a negative effect on V. locusta seed prediction. We conclude that native P. congesta limits abundances of introduced V. locusta at the direct-interaction scale, and we posit that V. locusta may rely on spatially dependent coexistence mechanisms to maintain coexistence at the site scale. In quantifying this competitive outcome our study demonstrates mechanistically how a native species may limit the abundance of an introduced invader.
RabbitMash: accelerating hash-based genome analysis on modern multi-core architectures
Authors: Yin Zekun , Xu Xiaoming , Zhang Jinxiao , Wei Yanjie , Schmidt Bertil , Liu Weiguo 
Published: August 2020

Abstract

Motivation
Mash is a popular hash-based genome analysis toolkit with applications to important downstream analyses tasks such as clustering and assembly. However, Mash is currently not able to fully exploit the capabilities of modern multi-core architectures, which in turn leads to high runtimes for large-scale genomic datasets.

Results
We present RabbitMash, an efficient highly optimized implementation of Mash which can take full advantage of modern hardware including multi-threading, vectorization and fast I/O. We show that our approach achieves speedups of at least 1.3, 9.8, 8.5 and 4.4 compared to Mash for the operations sketch, dist, triangle and screen, respectively. Furthermore, RabbitMash is able to compute the all-versus-all distances of 100 321 genomes in &lt;5 min on a 40-core workstation while Mash requires over 40 min.

Availability and implementation
RabbitMash is available at https://github.com/ZekunYin/RabbitMash.

Supplementary information
Supplementary data are available at Bioinformatics online.