Journal of the Australian Ceramic Society最新文献

{"title":"Achieving favorable dielectric properties in polymer-based blends by morphology collaboration of spherical Al2O3 and catenulate topologically aesthetic CuO","authors":"Zhiguo He","doi":"10.1007/s41779-022-00792-5","DOIUrl":"10.1007/s41779-022-00792-5","url":null,"abstract":"<div><p>To gain high dielectric constant, polymer composites with 1D fillers are researched for energy storage. However, high leakage conduction from polymer/filler interface and filler interconnection can induce high dielectric loss. For high dielectric constant and low dielectric loss, in this work, we raised a strategy of morphological synergy of fillers (1D catenulate semi-conductive CuO nano-filler and 0D insulating alumina nano-particles) to fabricate polymer-based ternary composites. Instead of 0D CuO, 1D CuO nano-chains with the improved specific surface area were employed for high dielectric constant via polymer/CuO interface polarization. Spherical alpha-alumina nano-particles were used for reducing polymer/CuO interface leakage conduction and depressing CuO percolation to gain low dielectric loss. Compared with rather high dielectric constant and dielectric loss in polymer/CuO binary composites, moderately high dielectric constant and rather low dielectric loss were achieved in ternary composites. Via excellent synergy of CuO and alumina, ternary composites showed more promising dielectric properties. Ternary composite with 9 wt% CuO and 3 wt% alumina exhibited a high dielectric constant of ~ 64 and low dielectric loss of ~ 0.16 at 20 Hz. This work might pave a road for large-scale preparation of high-performance composite dielectrics by morphological synergy of fillers.</p></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1541 - 1550"},"PeriodicalIF":1.9,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5113002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of AlN nanoparticles by arc discharge method and investigation of thermal conductivity of AlN transformer oil-based nanofluid","authors":"Mansoor Farbod,&nbsp;Neamatallah Bahmani","doi":"10.1007/s41779-022-00791-6","DOIUrl":"10.1007/s41779-022-00791-6","url":null,"abstract":"<div><p>In this work, AlN nanoparticles were prepared by arc discharge method and transformer oil-based nanofluids containing different concentrations of these nanostructures were prepared and their thermal conductivities and stabilities were investigated at various temperatures. Two aluminum rods were used as the electrodes and nitrogen gas was used as the arc atmosphere. To investigate the factors that influence the size and purity of the nanoparticles, the nitrogen gas pressure and the current flowing through the electrodes were changed. Based on XRD measurements, it was observed that at the pressure of 2 atm. and current of 100 A, the highest purity phase was achieved. Scanning electron microscope (SEM) images indicated that the smallest samples were the ones that were made at a pressure of 3 atm. and arc current of 400 A and had an average particle size of about 67 nm. The band gap of nanoparticles was obtained at 5.6 eV using the Tauc method. Then, transformer oil-based nanofluids with concentrations of 0.5, 1, 2, and 4 wt.% of AlN were prepared and their thermal conductivities and stabilities were investigated. The nanofluid with 4 wt.% of AlN nanoparticles at 60 °C showed a maximum thermal conductivity enhancement of 9.4%. Nanofluids were completely stable for up to a week.</p></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1533 - 1540"},"PeriodicalIF":1.9,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5000376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparing weathering-resistant superhydrophobic polymer/bentonite nano-composites for waterproof garment textiles via electrospinning","authors":"Die Hu","doi":"10.1007/s41779-022-00789-0","DOIUrl":"10.1007/s41779-022-00789-0","url":null,"abstract":"<div><h2>\u0000Abstract\u0000</h2><div><p>Polymers can be prepared into textiles via electrospinning. However, high overall property of outdoor clothing is necessary. In this work, hybridization and electrospinning were employed to fabricate fluoropolymer@bentonite hybrid textiles. Compared with fluoropolymer textile, hybrid textiles exhibit a surface superhydrophobicity ascribed to the significantly improved surface roughness of hybrid fibers, and they display high thermal stability attributed to inorganic bentonite. After acid/alkali immersion, ultraviolet radiation, or mechanical abrasion, hybrid textiles still show high water resistance, indicating strong weathering resistance. Rational material selection and electrospinning result in low surface energy, high surface roughness, and binary micro/nano hierarchical structure. Hybrid textile (with 10 wt% bentonite) shows high overall property (water contact angle of ~ 155°; thermal stability up to ~ 400 ℃; superhydrophobicity after 48 h exposing to acid, alkali, or radiation; hydrophobicity after 100 abrasion cycles). This work might pave a road for large-scale preparation of high-performance textiles for waterproof garments.</p></div></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1509 - 1517"},"PeriodicalIF":1.9,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4742250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship between hysteresis loops and cracking evolution/closure in ceramic-matrix composites under tension-tension fatigue loading","authors":"Longbiao Li","doi":"10.1007/s41779-022-00790-7","DOIUrl":"10.1007/s41779-022-00790-7","url":null,"abstract":"<div><p>When ceramic-matrix composites (CMCs) are under tension-tension cyclic fatigue loading, stochastic matrix cracking evolves with applied cycles and the closure of cracks occurs upon unloading. Evolution, opening, and closure of matrix cracking affect the reliability and safety of CMC components during operation. The objective of this paper is to establish the relationship between the hysteresis loops, cracking evolution, opening, and closure based on a new hysteresis constitutive model. Multiple micro damage parameters, e.g., unloading/reloading inverse tangent modulus (UITM/RITM), interface reverse slip ratio (IRSR), and interface new slip ratio (INSR), are developed to characterize the hysteresis loops with cracking evolution and closure. Upon unloading, the closure of matrix cracking decreases the UITMs and IRSR of the tension-tension fatigue hysteresis loops; upon reloading, the opening of matrix cracking increases the RITMs and IRSR of the tension-tension fatigue hysteresis loops. Experimental tension-tension fatigue hysteresis loops in different CMCs are predicted for different peak stresses and cycles. Effects of fiber volume, interface properties, peak stress, and stress ratio on ITM, IRSR, and IRSR are discussed. The developed approach can be used for cracking evolution, opening, and closure identification in CMCs.</p></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1519 - 1531"},"PeriodicalIF":1.9,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4743301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of mesoporous in β-tricalcium phosphate using electron microscopy","authors":"Henni Setia Ningsih,&nbsp;Leonhard Tannesia,&nbsp;Temesgen Yiber Animut,&nbsp;Wen-Ling Yeh,&nbsp;Shao-Ju Shih","doi":"10.1007/s41779-022-00781-8","DOIUrl":"10.1007/s41779-022-00781-8","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>A simple and scalable method, spray drying, for fabricating mesoporous β-tricalcium phosphate (β-TCP) was developed. The spray-dried powders were characterized using X-ray diffraction, Fourier-transform infrared, scanning electron microscope, transmission electron microscope, BET analysis, and in vitro cell viability. The obtained average particle sizes range between 0.3 and 1.8 μm, BET surface areas range between 16 and 64 m²/g, and average pore diameters are 3 nm. Meanwhile, the β-TCP powders exhibited no cytotoxicity except for the 800 ℃. In addition, for porous observation, detailed information on pore morphologies and corresponding pore size distributions was obtained. Finally, the pore formation mechanism of spray-dried β-TCP was discussed.</p></div></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1445 - 1454"},"PeriodicalIF":1.9,"publicationDate":"2022-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4787544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sr/Smco-doped hydroxyapatites: experimental characterization and theoretical research","authors":"Ala Hamd Hssain,&nbsp;Niyazi Bulut,&nbsp;Tankut Ates,&nbsp;Suleyman Koytepe,&nbsp;Ali Kuruçay,&nbsp;Hanifi Kebiroglu,&nbsp;Omer Kaygili","doi":"10.1007/s41779-022-00788-1","DOIUrl":"10.1007/s41779-022-00788-1","url":null,"abstract":"<div><p>This paper goes into extensive detail about the theoretical and experimental characterization of <span>(mathrm{Sr})</span> doped hydroxyapatite <span>((mathrm{HAp}))</span> samples that have been doped with <span>(mathrm{Sm})</span> in various amounts. To accomplish this, five <span>(mathrm{HAps})</span> containing a constant <span>(0.133mathrm{ at}. %)</span> of <span>(mathrm{Sr})</span> were additionally doped with <span>(mathrm{Sm})</span> at varied amounts and synthesized by a method of wet chemical. In addition, the density functional theory (DFT) was used to model all of these samples. According to theoretical results, the bandgap energy declined continuously from <span>(4.6297)</span> to <span>(4.4034mathrm{ eV})</span>. The linear absorption coefficient increased with increasing amounts of <span>(mathrm{Sm})</span> in all samples, while this parameter decreased with increasing photon energy. There was a reduction in both the lattice parameter <span>(a)</span> and the volume of the unit cell, but there was also an increase in the lattice parameter <span>(c)</span> and theoretical density. Accordingly, the experiment’s results were as follows:<span>(mathrm{HAp})</span> phase (above <span>(98mathrm{%})</span> for all of the samples) and beta-tricalcium phosphate <span>(upbeta -mathrm{TCP})</span> were both confirmed as the major phase and minor phase, respectively, by X-ray diffraction <span>((mathrm{XRD }))</span>, FT-Raman spectroscopy and the Fourier transform infrared <span>((mathrm{FTIR}))</span> measurements<b>.</b> The addition of <span>(mathrm{Sm})</span> increased in the <span>(upbeta -mathrm{TCP})</span> phase from <span>(0.62)</span> to <span>(0.86%.)</span> Same as theoretical results, it was also found that density was increasing and the volume of the unit cell decreased. An increase in anisotropic energy density and a decrease in crystallinity were discovered. The values are calculated based on the molar ratio, which was discovered to be close to those for stoichiometric <span>(mathrm{HAp})</span> in all samples <span>((1.67).)</span> Based on the results of the thermal study, all samples were confirmed to be thermally stable. <span>(mathrm{Sm})</span> content was discovered to have an effect on cell viability.</p></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1491 - 1507"},"PeriodicalIF":1.9,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-022-00788-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4200274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel ferrite magnetic nanoparticles: evidence for superparamagnetism in smaller size particles","authors":"P. Priyadharshini,&nbsp;P. A. Shobika,&nbsp;P. Monisha,&nbsp;S. S. Gomathi,&nbsp;K. Pushpanathan","doi":"10.1007/s41779-022-00784-5","DOIUrl":"10.1007/s41779-022-00784-5","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>Nickel ferrite magnetic nanoparticles have been synthesized by the co-precipitation method using stable nickel chloride and iron chloride salts with sodium hydroxide as the precipitating agent and polyethylene glycol as the capping agent. Annealing was adopted to get single-phase nickel ferrite nanoparticles and then the samples were characterized by X-ray diffraction, ultraviolet–visible spectroscopy, Fourier transform infrared spectroscopy, photoluminescence spectroscopy, transmission electron microscopy, vibrating sample magnetometer, electron paramagnetic resonance, and cyclic voltammetry. An X-ray diffraction study confirmed the single-phase, cubic inverse spinel crystal structure of the samples. With varying annealing temperatures, the average crystallite size diverges between 4.9 and 42.4 nm. The UV–vis absorbance spectra confirmed that nickel ferrites are direct bandgap materials with bandgap ranges from 3.12 to 3.02 eV. The effective mass of the exciton, the exciton Bohr radius, and the dielectric constants of NiFe₂O₄ nanoparticles were calculated using UV–vis spectroscopy. FTIR analysis displays the existence of two vibrational bonds between 424 and 600 cm⁻¹, corresponding to metal–oxygen interaction at tetrahedral and octahedral sites, respectively. Transmission electron microscope analysis validated the establishment of single-phase nickel ferrite nanoparticles in the range of 2.8–44.7 nm. Nearly zero coercivity and remanence confirmed the superparamagnetic property of the samples. The VSM analysis established the rise in saturation magnetization from 1.65 to 34.67 emu/g and the decrement in coercivity between 0.00481 and 0.00078 T as the annealing temperature increased. The superparamagnetism of the samples is supported by the EPR spectra. The cyclic voltammetry study infers that smaller size NiFe₂O₄ nanoparticles offer better supercapacitance performance.</p></div></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 5","pages":"1455 - 1480"},"PeriodicalIF":1.9,"publicationDate":"2022-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-022-00784-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4198561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, optical, and magnetic properties of Sn-doped ZnS thin films: role of post-annealing","authors":"Chaitanya Kumar Kunapalli,&nbsp;Deepannita Chakraborty,&nbsp;Kaleemulla Shaik","doi":"10.1007/s41779-022-00786-3","DOIUrl":"10.1007/s41779-022-00786-3","url":null,"abstract":"<div><p>Tin-doped zinc sulfide was coated onto glass plates and subjected to a post-air annealing treatment at 300 °C for 2 h. The air-annealed thin films were characterized for observing the tailoring in structural, surface, chemical, optical, photoluminescence, and magnetic properties due to annealing. The properties of thin films after air-annealing were compared with as-synthesized Kumar et al. (J. Supercond. Novel Magn. 32(6), 1725-1734, 2019), and vacuum-annealed Kunapalli et al. (Opt. Mater.114, 110961, 2021) thin films. Annealing in presence of air leads to finer crystallite structures of ZnS thin films. The air annealing also enhanced the transmittance property of the thin films. Two prominent peaks at 420 nm and 440 nm were observed in photoluminescence spectra. From magnetic studies, it was found that the films were paramagnetic in nature, and magnetization increased with an increase in the applied field.</p></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 4","pages":"1105 - 1110"},"PeriodicalIF":1.9,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-022-00786-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4970574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of iron nanoparticles on spark plasma sinterability of ZrB2-based ceramics","authors":"Seyed Ali Delbari,&nbsp;Jiyoung Lee,&nbsp;Mehrdad Sheikhlou,&nbsp;Abbas Sabahi Namini,&nbsp;Sunghoon Jung,&nbsp;Joo Hwan Cha,&nbsp;Sea-Hoon Lee,&nbsp;Rajender S. Varma,&nbsp;Ho Won Jang,&nbsp;Mohammadreza Shokouhimehr","doi":"10.1007/s41779-022-00777-4","DOIUrl":"10.1007/s41779-022-00777-4","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>This study assesses the influence of added iron (Fe) nanoparticles on the sinterability, microstructure, and mechanical characteristics of SiC-enforced ZrB₂ ceramics. The specimens were sintered under 30 MPa at 1700 °C for 5 min using the spark plasma sintering method. The SiC-free sample presented near full density; however, the incorporation of SiC led to a ~ 3% drop of the relative density. Although SiC could remove the surface oxides, the generation of a noticeable volume of gaseous phases resulted in increasing the amount of residual porosity. According to the X-ray diffractometry, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and field emission electron probe microanalyses studies, the ZrFe₂ and FeB compounds were generated as the in situ phases in the ZrB₂-Fe specimen, whereas the chemical reactions among the available constituents led to the in situ generation of graphite, FeSi₂, and Zr₃Fe phases in the ZrB₂-SiC-Fe composite. The SiC-reinforced sample achieved a Young’s modulus of 480 GPa and hardness of 29.4 GPa. Finally, the nanoindentation test was simulated using a 3D axisymmetric finite element model wherein the results obtained for the finite element modeling and load–displacement curve were in good agreement with the practical results. The mean values of elastic modulus, hardness, and stiffness in practical results were found to be 480 GPa, 29.4 GPa, and 0.72 mN/nm, while the corresponding ones in simulations were 571 GPa, 21.9 GPa, and 1.51 mN/nm, respectively.\u0000</p></div></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 4","pages":"1117 - 1128"},"PeriodicalIF":1.9,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4752418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of a low Li to Zr mole ratio of lithium lanthanum zirconate Li0.5xLa0.5xZr1−xO12−δ","authors":"Septia Kurniawati Arifah,&nbsp;Khoirina D. Nugrahaningtyas,&nbsp;Yuniawan Hidayat,&nbsp;Haeran Kim,&nbsp;Younki Lee,&nbsp;Fitria Rahmawati","doi":"10.1007/s41779-022-00782-7","DOIUrl":"10.1007/s41779-022-00782-7","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>In this research, a low mole ratio formula Li to Zr of Li_0.5xLa_0.5xZr_1−xO_12−δ(LLZO*) with various x = 0.1, 0.3, and 0.6 was synthesized. The research aims to understand the crystal structure and the electrochemical properties of the new formula of Li_0.5xLa_0.5xZr_1−xO_12−δ, in which the Li to Zr mole ratio is smaller than the common cubic garnet of Li₇La₃Zr₂O₁₂ (LLZO). A different sintering treatment was also applied to understand whether the material properties are only a matter of chemical formula or are also affected by the sintering method. The first sintering method was firing at 1230 °C for 6 h under air to produce LLZO*(A), and the second method was firing at 900 °C for 6 h under Ar flows to produce LLZO*(B). The XRD analysis found that the LLZO*(A) was crystallized mainly to tetragonal structure, and cubic pyrochlore secondary phase, with a small amount of cubic structure. Meanwhile, the LLZO*(B) was crystallized mainly into cubic and tetragonal structure. The impedance analysis found that LLZO*(B) shows a higher ionic conductivity than LLZO*(A), i.e., 7.573 × 10⁻⁵ S.cm^−1. A full-cell impedance measurement of LiFePO₄-LLZO*(B)-mcmb shows that LLZO*(B) x = 0.1 has the lowest Li⁺ migration resistance of 223.8 Ω confirming the promising material for solid electrolyte.</p></div></div>","PeriodicalId":49042,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"58 4","pages":"1061 - 1070"},"PeriodicalIF":1.9,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s41779-022-00782-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4494289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}