Science China Physics, Mechanics & Astronomy最新文献

{"title":"First results of terrestrial gamma-ray flash observed by Insight-HXMT","authors":"Qibin Yi,&nbsp;Yi Zhao,&nbsp;Shaolin Xiong,&nbsp;Xuejuan Yang,&nbsp;Ce Cai,&nbsp;Shuo Xiao,&nbsp;Gang Li,&nbsp;Gaopeng Lu,&nbsp;Hongbo Zhang,&nbsp;Fanchao Lyu,&nbsp;Wei Xu,&nbsp;Xiaobo Li,&nbsp;Chengkui Li,&nbsp;Mingyu Ge,&nbsp;Haisheng Zhao,&nbsp;Wangchen Xue,&nbsp;Jiacong Liu,&nbsp;Chao Zheng,&nbsp;Yanqiu Zhang,&nbsp;Chenwei Wang,&nbsp;Wenjun Tan,&nbsp;Shenglun Xie,&nbsp;Yue Huang,&nbsp;Zhi Chang,&nbsp;Congzhan Liu,&nbsp;Fangjun Lu,&nbsp;Liming Song,&nbsp;Yupeng Xu,&nbsp;Zhen Zhang,&nbsp;Shuangnan Zhang,&nbsp;Tipei Li","doi":"10.1007/s11433-024-2599-4","DOIUrl":"10.1007/s11433-024-2599-4","url":null,"abstract":"<div><p>As China’s first X-ray astronomy satellite, the hard X-ray modulation telescope (Insight-HXMT) carries three sets of X-ray telescopes. The high energy X-ray telescope (<i>Insight</i>-HXMT/HE) could serve as an all-sky gamma-ray monitor with a detection area of up to 5000 cm² and energy range from about 200 keV to 3 MeV. These characteristics, together with the high orbital inclination angle (43°) of the satellite, make the HE very suitable for detecting terrestrial gamma-ray flashes (TGFs). In this work, we implemented a dedicated TGF search algorithm for Insight-HXMT/HE, and identified 282 bright TGFs in its first four years of operation. We made a systematic study on the properties of these TGFs, including trigger time, duration, intensity, as well as the lightning association. We found that TGFs detected in mid-latitude regions (30° to 43°) are rare and they do not exhibit significantly different properties compared with TGFs in low-latitude (within 30°). Interestingly, the hardness ratio of TGF measured by <i>Insight</i>-HXMT/HE seems to be independent of the TGF duration, which differs from previous studies. These results show that, despite the dedicated design for astronomical observation, <i>Insight</i>-HXMT/HE is a versatile instrument to study energetic radiation phenomena from the Earth.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental realization of Wheeler’s delayed-choice experiment with dual selections","authors":"Xiaowan Yang,&nbsp;Xinglei Yu,&nbsp;Liangsheng Li,&nbsp;Xinzhi Zhao,&nbsp;Tianle Zheng,&nbsp;Chengjie Zhang,&nbsp;Chuan-Feng Li,&nbsp;Guang-Can Guo","doi":"10.1007/s11433-024-2587-y","DOIUrl":"10.1007/s11433-024-2587-y","url":null,"abstract":"<div><p>Wheeler’s delayed-choice experiment demonstrates wave-particle duality of particles using different experimental configurations of a Mach-Zehnder interferometer. In a quantum version of this experiment, the wave-particle behaviour of photons can be observed by controlling presence or absence of the second beam splitter. Here, we implement a delayed-choice experiment with dual selections based on entangled photons, experimentally controlling both of two beam splitters in the Mach-Zehnder interferometer, where the presence and absence of the second beam splitter are simultaneously controlled through path encoding. Our experiment reveals the wave-particle behavior of single photons under different configurations of two beam splitters. We further discuss the scenario when two beam splitters are in a quantum superposition of being present and absent, photons will be in a wave-particle quantum superposition state.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observation of tunable exceptional points in a non-Hermitian acoustic system","authors":"Chen Liu,&nbsp;Zhongming Gu,&nbsp;Haixiao Zhang,&nbsp;Xiaowei Zhang,&nbsp;Chuanhao Ge,&nbsp;Tuo Liu,&nbsp;Jie Zhu","doi":"10.1007/s11433-024-2608-4","DOIUrl":"10.1007/s11433-024-2608-4","url":null,"abstract":"<div><p>Exceptional points (EPs) have extensive and important applications in many wave-based technologies, such as ultra-sensitive sensing, unidirectional scattering and low-threshold laser. However, most of the previous EP-related wave phenomena are demonstrated in systems with fixed configuration, thereby extremely constraining their adaptability and reconfigurability in practice. Here, we introduce a flexible approach to tuning EPs in an acoustic system with sandwich structures. A rotatable component, associated with an alterable gradient index, is clamped by a pair of lossy acoustic resonators. Theoretical derivations and numerical simulations validate the capabilities of the model in continuously regulating EPs in the parameter space, with ingenious experimental setups confirming these findings. The results showcase the system’s effectiveness in achieving unidirectional reflectionless wave propagation across various frequencies. Our research reveals a flexible approach to linking the adjustment of EPs to a simple structural parameter, offering a robust framework for exploring and implementing non-Hermitian wave phenomena in practical scenarios.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extraction of energy from a black hole in Einstein-Maxwell-scalar theory","authors":"Cheng-Yong Zhang,&nbsp;Zehong Zhang,&nbsp;Ruifeng Zheng","doi":"10.1007/s11433-024-2607-1","DOIUrl":"10.1007/s11433-024-2607-1","url":null,"abstract":"<div><p>Recently, it has been discovered that the nonlinear self-interaction of matter can induce energy extraction from black holes beyond superradiant instability. This process is closely associated with the occurrence of a dynamical first-order transition between different types of static black holes. To explore whether first-order phase transitions invariably lead to energy extraction, we have investigated the evolution of black holes in the Einstein-Maxwell-scalar model with a higher-order coupling. In this model, there are also dynamical first-order phase transitions between black hole solutions. Our findings indicate that energy can only be extracted from a small, stable hairy black hole in this model. However, this energy extraction is more closely related to the growth of the black hole horizon radius, rather than the dynamical transition between different types of black holes. This suggests that a dynamical first-order phase transition does not necessarily result in energy extraction.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revealing the signal of QCD phase transition in heavy-ion collisions","authors":"Yi Lu,&nbsp;Fei Gao,&nbsp;Xiaofeng Luo,&nbsp;Lei Chang,&nbsp;Yuxin Liu","doi":"10.1007/s11433-024-2619-7","DOIUrl":"10.1007/s11433-024-2619-7","url":null,"abstract":"<div><p>We propose a novel criterion to identify the first-order QCD phase transition and the critical end-point (CEP) via directly the net-proton number fluctuations measured in relativistic heavy-ion collision (RHIC) experiments. Using this method, we show that there has not yet been a direct signal of the CEP of QCD according to the currently available data accumulated in the beam energy scan experiments with <span>(sqrt{s_{text{NN}}};geqslant;7.7)</span> GeV. However, there is still a possibility for the CEP to appear in the matter generated by the collisions with energy below 7.7 GeV, and its identification requires future measurements with high statistics for the high-order cumulants at low collision energies.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11433-024-2619-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pressure-induced nano-crystallization and high hardness of optically transparent α-Si3N4 ceramics","authors":"Shuailing Ma,&nbsp;Wei Li,&nbsp;Xiaoqi Zhang,&nbsp;Kathy Lu,&nbsp;Min Lian,&nbsp;Xinmiao Wei,&nbsp;Yilong Pan,&nbsp;Hai Jiang,&nbsp;Hongwei Wang,&nbsp;Zihan Zhang,&nbsp;Qiang Tao,&nbsp;Tian Cui,&nbsp;Ralf Riedel,&nbsp;Pinwen Zhu","doi":"10.1007/s11433-024-2613-4","DOIUrl":"10.1007/s11433-024-2613-4","url":null,"abstract":"<div><p>Transparent silicon nitride ceramics with good optical and mechanical properties are promising ceramics for scientific and industrial window materials with a long service life. The optical transparency and mechanical strength will be substantially enhanced in dense nano-polycrystalline monoliths. However, the synthesis of nano-polycrystalline α-Si₃N₄ has not been realized due to the limitations of conventional sintering techniques. Here, nano-polycrystalline α-Si₃N₄ was prepared by direct conversion of micron-grain silicon nitride without additives under high-pressure conditions of 5 GPa and a limited temperature range 1650°C–1700°C. The micron-sized grains undergo grain refinement and recrystallization to form uniform nano-grains under high pressure and high temperature. Furthermore, transparent α-Si₃N₄ samples exhibit the highest Vickers hardness of 26.7 GPa, which is far higher than that of specimens with or without additives used in other sintering methods (e.g., SPS, and HP). According to the Hall-Petch and Taylor dislocation hardening effects, the refined nano-grains, coherent grain boundaries, and high dislocation density lead to high hardness. Moreover, the high density, nanoscale grains, and fine grain boundaries are ascribed to the improvement of transparency. Ultrahigh-pressure sintering induces grain refinement, grain coherency, and increased dislocation in silicon nitrides, thus providing a promising method for preparing advanced transparent ceramic windows in the future.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Center-of-mass magnomechanics beyond magnetostrictive limits","authors":"Hao Xiong","doi":"10.1007/s11433-024-2606-4","DOIUrl":"10.1007/s11433-024-2606-4","url":null,"abstract":"<div><p>Cavity magnomechanics, leveraging magnetostrictive interactions, has emerged as an important platform for implementing spin-based precision measurement and investigating macroscopic quantum phenomena. Due to the weakness of the intrinsic magnetostrictive effect, the coupling between magnetic and mechanical vibrations in typical magnomechanical systems is relatively small. Here, we develop a center-of-mass magnomechanical system that is non-reliant on magnetostrictive effects. The proposed system consists of an inhomogeneous magnetic field and a yttrium iron garnet (YIG) sphere that is harmonically confined. We theoretically investigate the interaction between center-of-mass motion and magnonic excitation of the YIG sphere, and find that the field inhomogeneity induces a static force on the YIG sphere. Consequently, a magnomechanical interaction between the center-of-mass motion and the magnonic excitation is established. The parameter optimization of the magnomechanical interaction has been performed, and we show that the proposed system has the potential to reside in both the single-magnon high-cooperativity regime and the sideband-resolved regime. The capabilities of the system for magnomechanical applications, such as ground-state cooling of the mechanical mode, have been discussed, and we show that ground-state cooling of the mechanical mode is feasible in the unresolved sideband regime by taking into account the magnonics Kerr effect. Our analysis holds great promise for achieving magnonic nonlinearity at low excitation levels, thereby opening up avenues for magnomechanical applications in precision measurements and quantum manipulation.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generating arrays of perfect vector vortex beam with six on-demand degrees of freedom in metasurfaces","authors":"Changda Zhou,&nbsp;Yaqin Zheng,&nbsp;Guoli He,&nbsp;Siyang Li,&nbsp;Yanhui Deng,&nbsp;Houjiao Zhang,&nbsp;Zhang-Kai Zhou","doi":"10.1007/s11433-024-2609-9","DOIUrl":"10.1007/s11433-024-2609-9","url":null,"abstract":"<div><p>Perfect vector vortex beams (PVVBs) possess various degrees of freedom (DoFs) for optical information applications, benefiting from increasing information capacity, processing speed, etc. During the last two decades, various methods have been proposed for generating and controlling PVVBs, but most of these methods can only manipulate two or three DoFs, greatly hindering further exploration and application of PVVBs. To overcome this problem, we propose an attenuation-controlled holographic technique based on metasurfaces, which can realize the arbitrary and independent control of 6-DoFs, greatly improving the manipulation dimension of PVVBs. The PVVBs with 6 on-demand DoFs can appear in the array forms of either concentric or matrix rings without cross-talks or number limitations, which notably enlarges the number of information channels that can be simultaneously employed. Furthermore, we introduce a multi-dimensional dynamic addressing strategy for optical encryption with the advantages of both large capacity and high security due to its theoretically infinite code space. Our findings can not only deepen the study of optical field manipulation at the nanoscale, but also expand the application of structural light, promoting their utilization across the fields of nanophotonics, integrated optics, and optical information science at the high-dimensional level.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143533240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cosmological distance forecasts for the CSST Galaxy Survey using BAO peaks","authors":"Feng Shi,&nbsp;Jieyi Tian,&nbsp;Zhejie Ding,&nbsp;Xiaohu Yang,&nbsp;Yizhou Gu,&nbsp;Christoph Saulder,&nbsp;Xiaoping Li,&nbsp;Yanming Liu,&nbsp;Zitong Wang,&nbsp;Hu Zhan,&nbsp;Ming Li,&nbsp;Xiaolei Li,&nbsp;Hong Guo,&nbsp;Yan Gong,&nbsp;Yunkun Han,&nbsp;Cheng Li,&nbsp;Yipeng Jing,&nbsp;Jipeng Sui,&nbsp;Run Wen,&nbsp;Gong-Bo Zhao,&nbsp;Hu Zou,&nbsp;Pengjie Zhang,&nbsp;Xianzhong Zheng,&nbsp;Xingchen Zhou","doi":"10.1007/s11433-024-2603-8","DOIUrl":"10.1007/s11433-024-2603-8","url":null,"abstract":"<div><p>The measurement of cosmological distances using baryon acoustic oscillations (BAO) is crucial for studying the universe’s expansion. The China Space Station Telescope (CSST) galaxy redshift survey, with its vast volume and sky coverage, provides an opportunity to address key challenges in cosmology. However, redshift uncertainties in galaxy surveys can degrade both angular and radial distance estimates. In this study, we forecast the precision of BAO distance measurements using mock CSST galaxy samples, applying a two-point correlation function (2PCF) wedge approach to mitigate redshift errors. We simulate redshift uncertainties of <i>σ</i>₀ = 0.003 and <i>σ</i>₀ = 0.006, representative of expected CSST errors, and examine their effects on the BAO peak and distance scaling factors, <i>α</i>_⊥ and <i>α</i>_∥, across redshift bins within 0.0 &lt; <i>z</i> ⩽ 1.0. The wedge 2PCF method proves more effective in detecting the BAO peak compared with the monopole 2PCF, particularly for <i>σ</i>₀ = 0.006. Constraints on the BAO peaks show that <i>α</i>_⊥ is well constrained around 1.0, regardless of <i>σ</i>₀, with precision between 1% and 3% across redshift bins. In contrast, <i>α</i>_∥ measurements are more sensitive to increases in <i>σ</i>₀. For <i>σ</i>₀ = 0.003, the results remain close to the fiducial value, with uncertainties ranging between 4% and 9%; for <i>σ</i>₀ = 0.006, significant deviations from the fiducial value are observed. We also study the ability to measure parameters (Ω_<i>m</i>, <i>H</i>₀<i>r</i>_d) using distance measurements, proving robust constraints as a cosmological probe under CSST-like redshift uncertainties. These findings demonstrate that the CSST survey enables few-percent precision measurements of <i>D</i>_<i>A</i> using the wedge 2PCF method, highlighting its potential to place tight constraints on the universe’s expansion history and contribute to high-precision cosmological studies.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 4","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On-chip multidimensional (de)multiplexer utilizing adiabatic structure-connected micro-ring resonators","authors":"Zhiwei Guan,&nbsp;Keyin Wen,&nbsp;Chuangxin Xie,&nbsp;Ruixue Dou,&nbsp;Tianyimei Zuo,&nbsp;Junmin Liu,&nbsp;Huapeng Ye,&nbsp;Chaofeng Wang,&nbsp;Ze Dong,&nbsp;Dianyuan Fan,&nbsp;Shuqing Chen","doi":"10.1007/s11433-024-2605-3","DOIUrl":"10.1007/s11433-024-2605-3","url":null,"abstract":"<div><p>On-chip multidimensional multiplexing has shown considerable potential for enhancing transmission capacity and developing communication networks in integrated optical systems. Micro-ring resonators, which utilize the wavelength-dependent whispering gallery resonance mechanism and feature customizable cavity lengths, offer inherent advantages for accurate wavelength filtering. These characteristics make them promising candidates for wavelength multiplexers. However, a significant challenge arises from the mismatch in the effective refractive index between orthogonal linear polarizations, which introduces complexities to polarization channel multiplexing and impedes progress in on-chip multidimensional multiplexing that integrates both wavelength and polarization channels. In this work, we propose a double-layer adiabatic structure-connected micro-ring resonator (AMRR) with vertical refractive index asymmetry, demonstrating its utility in multidimensional (de)multiplexers. Our approach enables polarization division multiplexing (PDM) by facilitating polarization rotation between transverse electric and transverse magnetic polarizations through polarization hybridization. The (de)multiplexing of both wavelength and polarization channels is achieved by controlling the incident light direction and filtering the resonance wavelength within the micro-ring resonator. As a proof of concept, we successfully transmitted 144 Gbit/s QPSK-OFDM signals and achieved bit error rates below the forward error correction threshold at −19 dBm using the proposed multidimensional (de)multiplexer, which accommodates 3 wavelengths and 2 polarizations. Our design, which leverages the AMRR for simultaneous (de)multiplexing of wavelength and polarization channels, not only overcomes the limitation of traditional micro-ring resonators in implementing PDM, but also reduces the footprint of the multidimensional (de)multiplexer to 27 µm × 219 µm, an order of magnitude smaller compared to conventional designs.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 5","pages":""},"PeriodicalIF":6.4,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}