{"title":"Effect of copper incorporation into silver nanoparticles on the structural, morphological, and rheological properties of lead-free pastes for solar cell applications","authors":"Hazmoune Abdessalam, Lounis Azeddine, Abdelmounaim Chetoui, Ilyas Belkhettab, Ismail Bencherifa, Ahmed Kellai","doi":"10.1007/s13367-026-00154-8","DOIUrl":"10.1007/s13367-026-00154-8","url":null,"abstract":"<div><p>This study aims to optimize the synthesis of silver-based pastes with favorable rheological properties for screen-printing applications in solar cell manufacturing. Silver (Ag) and copper-doped silver (Cu–Ag) nanoparticles were successfully synthesized via the hydrothermal method. Structural characterization by X-ray diffraction confirmed the formation of pure cubic-phase silver, with no detectable impurity phases. Rietveld refinement was employed to determine lattice parameters, crystallite size, lattice strain, and dislocation density. Scanning electron microscopy (SEM) revealed rough, spherical to irregularly shaped particles, some exhibiting faceted surfaces. Energy-dispersive X-ray spectroscopy (EDS) confirmed the metallic nature of silver through characteristic Ag 3d₅/₂ and 3d₃/₂ peaks, while copper incorporation was validated by the Cu 2p doublet. In parallel, the XRD patterns of synthesized glass frits (GF-Ti and GF-Zr) exhibited peaks characteristic of amorphous structures, confirming successful formation. SEM analysis showed that GF-Ti had a highly irregular and porous morphology, whereas GF-Zr presented a denser and more compact structure. The porous GF-Ti glass frit may absorb more binder and hence increase the viscosity of the produced paste. These findings provide a foundation for the development of advanced conductive pastes tailored for photovoltaic applications. Rheological measurements revealed that all formulations exhibit shear-thinning or pseudo-plastic behavior, with viscosity decreasing under shear. The power-law model accurately described the flow behavior, showing that additives, particularly the ionic surfactant (Ti), significantly increased the consistency index compared to the base organic vehicle. Among all the pastes synthesized in this study, the Ag2-Ti formulation exhibited the most favorable rheological performance for metallic contacts printing in solar cells, with a flow index <i>n</i> = 0.5 and a consistency index K = 4000 Pa·sⁿ. The line profile obtained by optical microscopy showed thick, dense and well-defined printed contacts for Ag2-Ti paste with the absence of any remarkable edges along the boundaries. The electrical characterizations using the Transmission Line Method (TLM) showed a lower value of specific contact resistivity of 1.53 mΩ. cm<sup>2</sup> for the optimized Ag2-Ti material.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 2","pages":"199 - 217"},"PeriodicalIF":2.6,"publicationDate":"2026-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Single-point correction for representative shear rate and strain in parallel plate rheometry derived from energy-dissipation rate analysis","authors":"Shin Hyun Kang, Hye-Jin Ahn, Sun Chul Huh, Wook Ryol Hwang","doi":"10.1007/s13367-026-00153-9","DOIUrl":"10.1007/s13367-026-00153-9","url":null,"abstract":"<div><p>In this study, a single-point correction is investigated for determining representative shear rate and strain magnitude in parallel-plate rheometry, where shear stress is inherently non-uniform due to spatial variations in shear rate and strain. The correction is derived from the flow quantification approach based on the energy-dissipation rate. The correction factor of 0.765 to the tip shear rate and strain is found to coincide with the previously reported geometric one-point correction factor corresponding to the representative radius, at which the local shear stresses of a Newtonian and a non-Newtonian (power-law) fluid are equivalent. The correction has been validated for steady shear viscosity and large amplitude oscillatory shear measurements with four different non-Newtonian fluids: two aqueous xanthan gum solutions of 1 and 2 wt%, two aqueous PEO solutions of 2 and 4 wt%. The accuracy was assessed in comparison with measurements with the cone-and-plate fixture. The steady shear viscosity data exhibits the average relative errors less than 4.5% (in case of PEO solutions) and 10% (xanthan gum solution) for a wide shear rate range from 0.01 to 1000 [1/s]. The LAOS test data shows the average relative errors in both storage and loss moduli are limited to 4.2% (2 wt% PEO solution) and 7.85% (4 wt% PEO solution) for the strain magnitude range from 0.03 to 1000%.</p><h3>Graphical Abstract</h3><p>Steady shear viscosity and LAOS data with 2 wt% PEO 4M solution for wide ranges of shear rate and strain magnitude from the single-point correction with parallel plate (PP) geometry (1mm gap) and other three methods: measurement with cone and plate geometery (CP), volume-averaging scaling with PP and raw rheometer data with PP.</p><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 2","pages":"189 - 198"},"PeriodicalIF":2.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147862994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental evaluation of asphalt binder with lignin-rich black liquor and waste engine oil additives","authors":"Akshat Sharma, Amardeep Boora","doi":"10.1007/s13367-026-00152-w","DOIUrl":"10.1007/s13367-026-00152-w","url":null,"abstract":"<div><p>Conventional binders used in flexible pavements often suffer from rutting at high temperatures and cracking under ageing. Polymer modifiers can improve performance but are costly and environmentally demanding. To address these limitations, this study investigates the combined use of black liquor (BL), a lignin-rich by-product of the pulp industry and waste engine oil (WEO) as waste derived modifiers for VG 30 bitumen. In this work, VG 30 was modified with 10–30% BL and 3–12% WEO, and tested for physical, chemical and rheological performance. BL increased binder stiffness and thermal stability, while WEO improved flexibility and reduced brittleness; their combined use produced a balanced viscoelastic response, with blends containing 20–30% BL and 6–9% WEO showing optimal rutting resistance and elasticity. The 30% BL + 9% WEO blend achieved a high-temperature grade of PG 76 and exhibited lower non-recoverable creep compliance (J<sub>nr</sub>) than neat VG 30 when tested at the same temperature, indicating improved rutting resistance, while maintaining 55% elastic recovery. FTIR analysis confirmed that modification occurs primarily through physical blending. A TOPSIS-based multi-criteria decision analysis (MCDA) identified 30% BL + 9% WEO as the most suitable formulation for hot, heavy-traffic conditions, and 20% BL + 9% WEO for moderate climates. A screening-level cradle-to-gate life cycle assessment indicated that partial replacement of bitumen with BL and WEO can reduce greenhouse gas emissions and energy demand. Overall, BL–WEO modification provides a low-cost and environmentally favorable alternative to polymer-modified binders while maintaining strong high-temperature performance.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 2","pages":"165 - 187"},"PeriodicalIF":2.6,"publicationDate":"2026-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147862995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Stability of petroleum coke water slurry: influence of sodium lignosulfonate and rheological properties","authors":"Seyed Esmail Fazljoo, Maryam Fakharzadeh","doi":"10.1007/s13367-026-00151-x","DOIUrl":"10.1007/s13367-026-00151-x","url":null,"abstract":"<div><p>Petroleum coke water slurry stability is essential for storage and transportation. The present study examined the rheological behavior and stability performance of petroleum coke water slurry using a bead mill and sodium lignosulfonate as a dispersant and stabilizer.This method achieves smaller particle sizes (290 nm) for PCWS, improving dispersion compared to conventional CWS systems. To this end, the effects of particle size distribution (PSD), sodium lignosulfonate (SL) concentration, milling time, and pH of petroleum coke water slurry were investigated. Apparent viscosity and rheological properties were measured using a rotary rheometer. The results revealed that the apparent viscosity of petroleum coke water slurry decreased with the addition of sodium lignosulfonate concentration. Petroleum coke water slurry behaved as a pseudo-plastic fluid with the addition of sodium lignosulfonate. The rheological characteristic curves exhibited pseudo-shear-thinning fluid characteristics with increasing sodium lignosulfonate concentration. Petroleum coke water slurry with 6 wt% sodium lignosulfonate showed the best stability performance. By increasing the milling time and decreasing the particle size, the apparent viscosity of petroleum coke water slurry decreases, and the zeta potential increases. This, in turn, increases the stability of petroleum coke water slurry. The results showed that pH of around 9 was found to be the most favorable environment to rheological characteristics. At pH 11, the zeta potential reached its highest point, measuring 64.1 mV.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 2","pages":"151 - 163"},"PeriodicalIF":2.6,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147863064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yalin Zheng, Minghai Wei, Guangpeng Zhang, Aoping You
{"title":"Rheological properties of silica-based shear thickening fluids reinforced with silicon nitride and carbon nanotubes","authors":"Yalin Zheng, Minghai Wei, Guangpeng Zhang, Aoping You","doi":"10.1007/s13367-026-00150-y","DOIUrl":"10.1007/s13367-026-00150-y","url":null,"abstract":"<div>\u0000 \u0000 <p>This study fabricates SiO<sub>2</sub>/Si<sub>3</sub>N<sub>4</sub>/MWCNT shear-thickening fluids (STFs) based on nanoparticles silicon dioxide (SiO<sub>2</sub>), silicon nitride (Si<sub>3</sub>N<sub>4</sub>), and multi-walled carbon nanotubes (MWCNT). The research investigates the effects of MWCNT mass fraction, ambient temperature, and gap distance on the shear thickening (ST) performance through rheological experiments. Scanning electron microscopy and X-ray diffraction confirm the presence of MWCNT and Si<sub>3</sub>N<sub>4</sub> nanoparticles within the multiphase STF (MSTF), as well as their interactions with SiO<sub>2</sub> nanoparticles. Steady shear rheology tests reveal significant rheological behavior and a pronounced ST effect in SiO<sub>2</sub>/Si<sub>3</sub>N<sub>4</sub>/MWCNT-STF with varying mass ratios. The optimal mass ratio of SiO<sub>2</sub>, Si<sub>3</sub>N<sub>4</sub>, and MWCNT is found to be 20:2.5:0.8, at which point the ST performance of the MSTF is maximized. The peak viscosity increases from 65.83 Pa s (20:2.5:0.2) to 516.2 Pa s (20:2.5:0.8), while the critical shear rate decreases from 63.1 s<sup>−1</sup> to 6.31 s<sup>−1</sup>. Dynamic rheology tests demonstrate that the 20%SiO<sub>2</sub>/2.5%Si<sub>3</sub>N<sub>4</sub>/0.8%MWCNT-STF exhibit not only significant energy storage and dissipation capabilities but also enhanced rate sensitivity in energy storage and dissipation compared to silicon-based STF (SiO<sub>2</sub>-STF) under lower rate excitations. Temperature sensitivity studies indicate that MSTF maintain excellent ST characteristics even in high-temperature environments. In comparison to SiO<sub>2</sub>-STF, the variation in peak viscosity and critical shear rate of MSTF with increasing temperature is significantly reduced, demonstrating superior temperature stability and offering potential for engineering applications in higher temperature environments.</p>\u0000 <span>AbstractSection</span>\u0000 Graphical abstract\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 \u0000 </div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 1","pages":"107 - 121"},"PeriodicalIF":2.6,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the relaxation time spectrum recovery from the stress relaxation test data using Post-Widder inversion formula and double-logarithmic-power-series model","authors":"Anna Stankiewicz","doi":"10.1007/s13367-025-00149-x","DOIUrl":"10.1007/s13367-025-00149-x","url":null,"abstract":"<div><p>The problem of recovering the relaxation time spectrum from discrete-time relaxation modulus measurement data is considered using the Post-Widder inversion formula and based on double-logarithmic-series-power model of the relaxation modulus. Using the specific properties of this relaxation modulus model, the product of the arbitrarily high power of time and the same order derivative of the relaxation modulus, which is the basis for the Post-Widder inversion rule, was expressed by analytical formula given by the series of recurrence-type, defined by the modulus model and triple-indexed integer coefficients introduced by simple recurrence equations. As a result, a new sequence of the Post-Widder approximations of the relaxation time spectrum was derived, given by recursive-type analytical formula. Two-stage identification scheme is presented for the relaxation spectrum model determination. In the first stage, the optimal double-logarithmic-series-power model is determined using Tikhonov-regularized linear least-squares method, applied to the log-transformed model and the relaxation modulus measurement data. Then, in the second identification stage, the calculation of the relaxation spectrum model is based on the recursive analytical formula of the Post-Widder approximation of arbitrarily high order. Finally, an example of the identification of the Baumgaertel-Schausberger-Winter spectrum is presented, which is characterized by a very wide range of relaxation times. It has been shown that the proposed method provides a very good approximation of the actual relaxation spectrum even for strong measurement noises.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 2","pages":"125 - 150"},"PeriodicalIF":2.6,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147862996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Patient-specific hemodynamic assessment of cerebral aneurysms treated with braided stents using immersed boundary method: computational fluid dynamics study","authors":"Ihab Omar, Nashmi H. Alrasheedi, As’ad Alizadeh, Abdellatif M. Sadeq, Ashraf Abed Hussein, Husam Rajab, Narinderjit Singh Sawaran Singh, Walid Aich","doi":"10.1007/s13367-025-00147-z","DOIUrl":"10.1007/s13367-025-00147-z","url":null,"abstract":"<div><h3>Background and objective</h3><p>Intracranial aneurysms in the internal carotid artery (ICA) pose significant clinical risk, particularly in the presence of abnormal hemodynamics exacerbated by arterial dilation. Flow-diverting stents offer a promising endovascular solution, yet their efficacy depends strongly on the interaction between device geometry and local blood flow dynamics.</p><h3>Methods</h3><p>This study employs a patient-specific computational fluid dynamics (CFD) framework to assess the hemodynamic effects of two braided stent models-standard and dense-implanted in an aneurysmal ICA. A high-fidelity immersed boundary method (IBM) is implemented to embed the stent geometry within the fluid domain without requiring mesh conformity. Simulations were performed under physiologically realistic pulsatile conditions using a non-Newtonian blood rheology model. Comparative analyses were conducted against a baseline (no-stent) model to evaluate spatial and temporal patterns of wall shear stress (WSS), time-averaged WSS (TAWSS), oscillatory shear index (OSI), and intra-aneurysmal velocity fields.</p><h3>Results</h3><p>Results reveal that the standard and dense stents reduced peak area-averaged WSS on the aneurysm wall by approximately 64% and 78%, respectively, compared to the no-stent model. The dense stent further achieved near-complete suppression of OSI, indicating a more stable hemodynamic environment.</p><h3>Conclusion</h3><p>These findings suggest that increasing stent mesh density enhances flow diversion and may improve long-term therapeutic outcomes in ICA aneurysm management.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 1","pages":"79 - 91"},"PeriodicalIF":2.6,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ji-Won Kang, Eun Hui Jeong, Jun Dong Park, Byoung Soo Kim
{"title":"Solvent-assisted mixing of Ag/MWCNT/PDMS composites for stretchable conductors","authors":"Ji-Won Kang, Eun Hui Jeong, Jun Dong Park, Byoung Soo Kim","doi":"10.1007/s13367-025-00144-2","DOIUrl":"10.1007/s13367-025-00144-2","url":null,"abstract":"<div><p>Incorporating metallic particles in a soft polymer matrix provides a practical and cost-effective route to electrically conductive stretchable materials. Reliable performance depends critically on the microstructure established before matrix curing, which is governed by the rheology of the uncured composite paste. This study presents a solvent-assisted formulation strategy that exploits solvent-polymer compatibility to adjust viscosity during mixing and evaporation, subsequently regulating filler migration and network consolidation. Using silver (Ag) particles and multiwalled carbon nanotubes (MWCNTs) in a polydimethylsiloxane (PDMS) matrix, we show that solvent-assisted processing enhances electrical performance under strain by promoting the formation of a percolated CNT-bridging network. The composite fabricated without solvent exhibits a monotonic modulus decrease, indicating localized and poorly dispersed MWCNT aggregates. In contrast, solvent-assisted mixing produces pronounced strain stiffening, evidencing formation of a flexible, percolated MWCNT network. Among solvent-processed samples, the isopropyl alcohol (IPA)–assisted composite shows the most distinct stiffening response, suggesting a more homogeneous and extended network than that formed with chloroform. At identical Ag loading, IPA processing maintains stable electrical resistance up to ~ 80% tensile strain and reduces hysteresis during cyclic loading, whereas chloroform processing shows resistance escalation near 70% strain. These findings demonstrate that solvent-assisted processing, particularly with IPA, markedly improves filler dispersion and structural integrity in Ag/MWCNT/PDMS stretchable conductors.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 1","pages":"37 - 44"},"PeriodicalIF":2.6,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Angela Miscli Rangel-Garcia, Luis Medina-Torres, Octavio Manero, Marco Antonio Álvarez-Pérez, María Cristina Piña-Barba
{"title":"Study of the printability and rheological behavior of inks formulated with collagen- polycaprolactone-chitosan","authors":"Angela Miscli Rangel-Garcia, Luis Medina-Torres, Octavio Manero, Marco Antonio Álvarez-Pérez, María Cristina Piña-Barba","doi":"10.1007/s13367-025-00148-y","DOIUrl":"10.1007/s13367-025-00148-y","url":null,"abstract":"<div>\u0000 \u0000 <p>The development of inks for use in 3D printing remains a significant challenge in the field of tissue engineering. In this study, the dimensionless printability factor is calculated by comparing printed images with the desired design, resulting in a value of 0.87 ± 0.11 for ink with the lowest polycaprolactone (PCL) content. A filament collapse test was conducted to ascertain the grid pore size, with results attained within the range of 0.60 to 1 mm. The rheological behavior of inks formulated with collagen (Col), polycaprolactone (PCL) and chitosan (Chi) exhibit shear-thinning viscosity, and decreasing rheological properties with increasing temperature. The storage (G′) and loss (G′′) moduli increase with increasing angular frequency. Results reveal that increasing polymer concentration improves printability and rheological properties of the Col: PCL: Chi inks, allowing the printing of scaffolds with regulated properties leading to important applications in tissue engineering.</p>\u0000 </div>","PeriodicalId":683,"journal":{"name":"Korea-Australia Rheology Journal","volume":"38 1","pages":"93 - 106"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s13367-025-00148-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}