摘要：
The simplicial contagion model is employed to study the spreads of two epidemics with mutation in high-order networks. The original epidemic can give birth to a mutated epidemic, but not vice versa. Numerical simulations and mean-field theory results reveal that the spread of the mutated epidemic is entirely dependent on the original epidemic if it cannot spread independently. Conversely, the spread of the original epidemic is entirely inhibited when mutated epidemic spreads by itself. The stability analysis of mean-field theory explains the extinction of the original epidemic and the emergence of a bistable region. Two stable equilibrium points remain unchanged despite variations in parameters like the original epidemic's infection probabilities and mutation rates. While the neighborhood of the stable equilibrium points is regulated by the above parameters. Our conclusions have also been validated in real-world networks.
作者机构：
[Xiao, Yuxuan; Xie, Guohua] The Institute of Flexible Electronics (Future Technologies), Xiamen University, Xiamen 361005, China;[Xue, Qin] Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China;[Liu, Xiaoke; Gao, Feng] Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden
通讯机构：
[Xiaoke Liu; Feng Gao] D;Department of Physics, Chemistry and Biology, Linköping University, 58183 Linköping, Sweden
作者机构：
[Zhao, D.] Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Xinjiang, Peoples R China.;[Wang, N.; Yuen, R.; Yuan, J. P.; Yao, J. M.; Wang, J. B.; Yan, W. M.; Wu, Q. D.; Wang, N; Zhou, X.; Wang, S. Q.; Kou, F. F.; Sun, S. N.; Zhao, D.; Li, D.] Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China.;[Wang, N.; Yuen, R.; Yuan, J. P.; Yao, J. M.; Wang, J. B.; Yan, W. M.; Wu, Q. D.; Wang, N; Zhou, X.; Wang, S. Q.; Kou, F. F.; Sun, S. N.; Zhao, D.] Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Xinjiang, Peoples R China.;[Wang, N.; Yuen, R.; Yuan, J. P.; Yao, J. M.; Yan, W. M.; Wu, Q. D.; Wang, N; Zhou, X.; Wang, S. Q.; Kou, F. F.; Sun, S. N.; Zhao, D.] Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China.;[Wang, P.; Meng, L. Q.; Xue, M. Y.; Zhu, W. W.; Zhang, L.; Chen, Y. T.; Miao, X. L.; Niu, J. R.; Niu, C. H.; Qian, L.; Yuan, M.; Li, D.; Yue, Y. L.] Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China.
通讯机构：
[Wang, N ] C;Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China.;Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Xinjiang, Peoples R China.;Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China.
摘要：
We report the timing analysis of PSR J1846-0513, a pulsar discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Commensal Radio Astronomy FAST Survey. The pulsar possesses a spin period of 23.36 ms and a spin-down rate ( P ) of 1.0106(3) x 10-18 s s-1, and it is located in an eccentric orbit (e similar to 0.208) with an orbital period of 0.61 days. The characteristic age and surface magnetic field of the pulsar are found to be 366.62 Myr and 4.9178 x 109 G, respectively, indicating that it is a recycled pulsar. Using over two years of timing data, we measure the periastron advance omega = 0.8956(8) deg yr-1. By assuming that this effect is purely relativistic, we have estimated the total mass M = 2.6287(35)M circle dot and obtained an upper limit for the pulsar mass and a lower limit for the companion's mass. Our results indicate that this is a double neutron star system.
期刊：
Sustainable Materials and Technologies,2024年40:e00875 ISSN：2214-9937
通讯作者：
Wei Sun<&wdkj&>Zhihong Zhu
作者机构：
[Songlin Zhao; Chengcai Wang; Luhang Cai; Yipeng Chen; Zhihong Zhu] Institute of Nano-science and Nano-technology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, PR China;[Wei Sun] Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China
通讯机构：
[Wei Sun] K;[Zhihong Zhu] I;Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, PR China<&wdkj&>Institute of Nano-science and Nano-technology, College of Physical Science and Technology, Central China Normal University, Wuhan 430079, PR China
摘要：
The fabrication of distinct sites on the carbonized substrate as bifunctional oxygen catalysts is pivotal for enhancing the practicality of Zn-air batteries, but remains a formidable challenge. Herein, a gas doping strategy is reported for anchoring Ni nanoparticles and further increasing FeNx sites on biomass-derived Fe, N, and P co-doped porous carbonized materials as highly efficient bifunctional electrocatalysts. The inherent porous structure and heteroatom of rattan tea provide a superior carrier for Fe and Ni-based active species. Notably, the as-prepared Ni@FeNPC/Fef shows unprecedented capability for oxygen reduction reaction and excellent catalytic activity for oxygen evolution reaction. In situ Raman spectroscopy studies shed light on the role of FeNx and heteroatom-doped carbon during the oxygen reduction reaction. Density functional theory calculations verify the catalytic mechanism on various active sites of Ni@FeNPC/Fef. Moreover, the Ni@FeNPC/Fef-based Zn-air battery maintains cyclic stability for over 400 h with negligible voltage degradation. This strategy endows a novel route for converting biomass into practical electrocatalysts for diverse energy-related systems.
通讯机构：
[Zhang, DL; Chen, K ; Wang, HL] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, PLAC, Wuhan 430079, Peoples R China.;Hubei Prov Engn Res Ctr Silicon Pixel Chip & Detec, Wuhan 430079, Peoples R China.
关键词：
CMOS readout of gaseous detectors;Front-end electronics for detector readout;Gaseous imaging and tracking detectors;Time projection Chambers (TPC)
摘要：
Within the project of building a time projection chamber using 100 kg of high-pressure 82SeF6 gas to search for the neutrinoless double -beta decay in the NvDEx collaboration, we are developing a CMOS charge sensor, named Topmetal-S, which is tailored for the experiment to detect the ions without gas amplification. In this work, the performance of the sensor is presented. The equivalent noise charge of the sensor is measured to be about 120 to 140 e- depending on the operating point, with the charge injection capacitance calibrated against external capacitors. The signal waveforms are investigated with various chip parameters and experimental settings. In addition to electrons, both negatively and positively charged ions could be detected, and their waveforms are studied using air and SF6 gases. Using the sensor, the mobility of negative ions in ambient air in the atmospheric pressure is measured to be 1.555 +/- 0.038 cm2 center dot V-1 center dot s-1. Our study demonstrates that the Topmetal-S chip could be used as the ion detection charge sensor for the experiment. Further work is ongoing to reduce the noise of the sensor and to develop a small readout plane with tens of the sensors.
通讯机构：
[Sun, XM ; Xiao, L] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Hubei, Peoples R China.
关键词：
Front-end electronics for detector readout;Particle tracking detectors;VLSI circuits
摘要：
We present the design of a prototype MAPS sensor MIC6_V1 based on a 55 nm Quad -well CMOS Image Sensor process for the CEPC vertex detector. A new node -based, data -driven, parallel readout architecture is implemented to achieve high spatial resolution, fast readout, and low power consumption. The size of MIC6_V1 is 2.8 mm x 2.8 mm, which contains a pixel matrix of 64 rows by 64 columns, and the pixel size is 23.6 mu m x 20 mu m. The integration time is 5 mu s, and the hit arrival time measurement accuracy is 10 ns.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of Instrumentation,2024年19(03):P03010 ISSN：1748-0221
通讯作者：
Stanislaus, S
作者机构：
[Ketel, T.; Tuning, N.; Usachov, A.; de Boer, J.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Magdalinski, D.; Akiba, K.; Aaij, R.; Snoch, A.; Biolchini, A.; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; van Veghel, M.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;[Monk, M.; Fujii, Y.; Egede, U.; Lane, J. J.; Henderson, R. D. L.; Hadavizadeh, T.; Song, R.; Ward, J. A.; Walton, E. J.] Monash Univ, Sch Phys & Astron, Melbourne, Vic, Australia.;[Da Graca, U. De Freitas Carneiro; Massafferri, A.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; dos Reis, A. C.; Santoro, L.; Leite, J. Baptista de Souza] Ctr Brasileiro Pesquisas Fisicas CBPF, Rio De Janeiro, Brazil.;[De Paula, B. Souza; Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Rangel, M. S.; Hicheur, A.; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Nasteva, I.; Amato, S.] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil.;[Zheng, X. Z.; Ma, G. M.; Wang, Z.; Qu, S.; Qin, N.; Xu, L.; Tou, D. Y.; Wang, J.; Li, A.; Zhang, Y. Z.; Hu, X.; Song, Y.; Tan, Y.; Gong, G.; Lian, Z.; Kang, Y.; Qi, H. R.; Zhu, X.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
通讯机构：
[Stanislaus, S ] U;Univ Oxford, Dept Phys, Oxford, England.
关键词：
Analysis and statistical methods;Detector alignment and calibration methods (lasers, sources, particle-beams);Large detector-systems performance;Performance of High Energy Physics Detectors
摘要：
Momentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biases that arise from misalignments of tracking detectors. Low momentum charged particles used in alignment procedures have limited sensitivity to coherent displacements of such detectors, and therefore are unable to fully constrain these misalignments to the precision necessary for studies of electroweak physics. Additional approaches are therefore required to understand and correct for these effects. In this paper the curvature biases present at the LHCb detector are studied using the pseudomass method in proton-proton collision data recorded at centre of mass energy root s = 13 TeV during 2016, 2017 and 2018. The biases are determined using Z -> mu(+)mu(-) decays in intervals defined by the data-taking period, magnet polarity and muon direction. Correcting for these biases, which are typically at the 10(-4) GeV-1 level, improves the Z -> mu(+)mu(-) mass resolution by roughly 18% and eliminates several pathological trends in the kinematic-dependence of the mean dimuon invariant mass.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of High Energy Physics,2024年(1) ISSN：1029-8479
通讯作者：
Luo, Y
作者机构：
[Ketel, T.; Mulder, M.; Tuning, N.; Usachov, A.; Lukashenko, V; Galati, M. D.; Akiba, K.; Aaij, R.; Snoch, A.; De Bruyn, K.; Biolchini, A.; Kostiuk, I; Jans, E.; Heijhof, K.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; Onderwater, C. J. G.; van Veghel, M.; Butter, J. S.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subatom Phys, Amsterdam, Netherlands.;[De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; de Souza Leite, J. Baptista; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; Carneiro Da Graca, U. De Freitas; dos Reis, A. C.; Santoro, L.; Massaferri, A.] Ctr Brasileiro Pesquisas Fis CBPF, Rio De Janeiro, Brazil.;[De Paula, B. Souza; Lopes, J. H.; Polycarpo, E.; Souza De Almeida, F. L.; Gandelman, M.; Gobel, C.; Rangel, M. S.; Hicheur, A.; Nasteva, I; Barbosa, I. R.; Otalora Goicochea, J. M.; Gomes, A.; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Amato, S.] Univ Fed Rio de Janeiro UFRJ, Rio De Janeiro, Brazil.;[Cai, H.; Bian, L.; Liu, G.; Wang, Z.; Qu, S.; Qin, N.; Li, T.; Ren, Z.; Xu, L.; Tou, D. Y.; Huang, X.; Li, H.; Wang, J.; Li, A.; Hu, X.; Hu, J.; Song, Y.; Tan, Y.; Gong, G.; Wang, X.; Bursche, A.; Lian, Z.; Kang, Y.; Fang, B.; Qi, H. R.; Zhu, X.; Sun, L.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.;[Lu, Y.; Li, Y.; Yuan, X.; Sheng, S.; Li, T.; Li, P-R; Wang, J.; Chen, S.; Xu, Z.; Tobin, M.; Miao, D.; Liu, K.; Jiang, X.; Batsukh, B.; Zou, Q.; Feng, M.; Liu, S.] Inst High Energy Phys IHEP, Beijing, Peoples R China.
通讯机构：
[Luo, Y ] T;Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.
关键词：
Heavy Quark Production;Relativistic Heavy Ion Physics;QCD;Heavy Ion Experiments
摘要：
The production of prompt D+ and D-s(+) mesons is studied in proton-lead collisions at a centre-of-mass energy of root s(NN) = 5.02TeV. The data sample corresponding to an integrated luminosity of (1.58 +/- 0.02)nb(-1) is collected by the LHCb experiment at the LHC. The differential production cross-sections are measured using D+ and D-s(+) candidates with transverse momentum in the range of 0 < p(T) < 14 GeV/c and rapidities in the ranges of 1.5 < y* < 4.0 and -5.0 < y* < -2.5 in the nucleon-nucleon centre-of-mass system. For both particles, the nuclear modification factor and the forward-backward production ratio are determined. These results are compared with theoretical models that include initial-state nuclear effects. In addition, measurements of the cross-section ratios between D+, D-s(+) and D-0 mesons are presented, providing a baseline for studying the charm hadronization in lead-lead collisions at LHC energies.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of High Energy Physics,2024年(2) ISSN：1029-8479
通讯作者：
Aaij, R
作者机构：
[Ketel, T.; Tuning, N.; Mauri, A.; Usachov, A.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Veronesi, M.; Akiba, K.; Aaij, R.; Aaij, R; Snoch, A.; Biolchini, A.; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; Butter, J. S.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;[Da Graca, U. De Freitas Carneiro; Massafferri, A.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; Torres, M. Cruz; Machado, D. Torres; Gomes, A.; dos Reis, A. C.; Leite, J. Baptista de Souza] CBPF, Rio De Janeiro, Brazil.;[De Paula, B. Souza; Lopes, J. H.; Goicochea, J. M. Otalora; Polycarpo, E.; Gandelman, M.; Rangel, M. S.; Hicheur, A.; Gomes, A.; Garcia, L. Meyer; Rodrigues, F. Ferreira; De Paula, L.; Nasteva, I.; Amato, S.; De Almeida, F. L. Souza] Univ Fed Rio de Janeiro, Rio de Janeiro, Brazil.;[Wang, Z.; Qu, S.; Qin, N.; Ren, Z.; Xu, L.; Tou, D. Y.; Wang, J.; Li, A.; Hu, X.; Tan, Y.; Gu, C.; Gong, G.; Kang, Y.; Qi, H. R.; Chen, C.; Zhu, X.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.; Gan, Y.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.;[Lu, Y.; Li, Y.; Sheng, S.; Li, T.; Wang, J.; Chen, S.; Tobin, M.; Miao, D.; Jiang, X.; Batsukh, B.; Zou, Q.; Liu, S.] Inst High Energy Phys, Beijing, Peoples R China.
关键词：
B Physics;Flavour Physics;Hadron-Hadron Scattering;Rare Decay
摘要：
A search for rare B. D mu+ mu- decays is performed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. No significant signals are observed in the non-resonant mu+ mu- modes, and upper limits of B -> B0. D0 mu+ mu- < 5.1 x 10-8, B B+. D+ s mu+ mu- -> < 3.2 x 10-8, B -> B0 s. D0 mu+ mu--> < 1.6 x 10-7 and fc/fu center dot B B+ c. D+ s mu+ mu--> < 9.6 x 10-8 are set at the 95% confidence level, where fc and fu are the fragmentation fractions of a B meson with a c and u quark respectively in proton-proton collisions. Each result is either the first such measurement or an improvement by three orders of magnitude on an existing limit. Separate upper limits are calculated when the muon pair originates from a J/.. mu+ mu- decay. The branching fraction of B+ c. D+ s J/. multiplied by the fragmentation-fraction ratio is measured to be fc fu center dot B -> B+ c. D+ s J/.-> = (1.63 +/- 0.15 +/- 0.13) x 10-5, where the first uncertainty is statistical and the second systematic.
摘要：
针对目前有线全双工通信系统中保密通信技术尚未成熟,在保密性能存在局限性,以同频同时全双工(co-frequency co-time full duplex,CCFD)系统的自干扰(self-interference,SI...展开更多 针对目前有线全双工通信系统中保密通信技术尚未成熟,在保密性能存在局限性,以同频同时全双工(co-frequency co-time full duplex,CCFD)系统的自干扰(self-interference,SI)消除理论为基础,提出一种物理层绝对安全的有线保密通信系统设计方案,通过巧妙地在接收端向链路中释放同时同频大功率人造噪声的方式将目标信号隐藏起来,再利用接收机对噪声信号的已知性,借助CCFD系统的模拟域自干扰消除技术在接收机中实现高dB的SI消除,实现Wyner意义上的绝对安全的保密通信。依据香农理论分析了延迟时间差、窃听位置、传输线长度等因素对SI消除能力和系统安全容量的影响。结果表明:系统的安全容量始终大于零,达到绝对保密通信效果。收起
摘要：
Accurate determination of the thermal rate constants for combustion reactions is a highly challenging task, both experimentally and theoretically. Machine learning has been proven to be a powerful tool to predict reaction rate constants in recent years. In this work, three supervised machine learning algorithms, including XGB, FNN, and XGB-FNN, are used to develop quantitative structure-property relationship models for the estimation of the rate constants of hydrogen abstraction reactions from alkanes by the free radicals CH(3), H, and O. The molecular similarity based on Morgan molecular fingerprints combined with the topological indices are proposed to represent chemical reactions in the machine learning models. Using the newly constructed descriptors, the hybrid XGB-FNN algorithm yields average deviations of 65.4%, 12.1%, and 64.5% on the prediction sets of alkanes + CH(3), H, and O, respectively, whose performance is comparable and even superior to the corresponding one using the activation energy as a descriptor. The use of activation energy as a descriptor has previously been shown to significantly improve prediction accuracy ( Fuel 2022, 322, 124150) but typically requires cumbersome ab initio calculations. In addition, the XGB-FNN models could reasonably predict reaction rate constants of hydrogen abstractions from different sites of alkanes and their isomers, indicating a good generalization ability. It is expected that the reaction descriptors proposed in this work can be applied to build machine learning models for other reactions.
摘要：
The thermodynamic properties of charged particles, such as the energy density, pressure, entropy density, particle density, and squared speed of sound at the kinetic freeze-out in the
$$\mathrm {Au+Au}$$
collisions from the relativistic heavy ion collider (RHIC) beam energy scan program (
$$\sqrt{s_\text {NN}}$$
= 7.7–200 GeV) and in the
$$\mathrm {Cu + Cu}$$
collisions at
$$\sqrt{s_\text {NN}}$$
= 62.4, 200 GeV are studied using the thermodynamically consistent Tsallis distribution. The energy density, pressure, and particle density decrease monotonically with the collision energy for the same collision centrality; These properties also decrease monotonically from the central to peripheral collisions at the same collision energy. While the scaled energy density
$$\varepsilon /T^4$$
and scaled entropy density
$$s/T^{3}$$
demonstrate the opposite trend with the collision energy for the same collision centrality. There is a correlation between
$$\varepsilon /T^{4}$$
and
$$s/T^{3}$$
at the same centrality. In addition, the squared speed of sound was calculated to determine that all the collision energies share nearly the same value at different collision centralities.
作者机构：
[Li, D; Tsai, Chaowei; Zhang, Yongkun; Zheng, Zheng; Cui, Xianghan; Li, Di; Zhu, Yuhao; Wang, Pei] Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China.;[Li, D; Zhang, Yongkun; Cui, Xianghan; Meng, Fanyi; Li, Di; Zhu, Yuhao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Niu, CH; Niu, Chenhui] Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China.;[Li, D; Li, Di] Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa.;[Feng, Yi] Zhejiang Lab, Res Ctr Intelligent Comp Platforms, Hangzhou 311100, Peoples R China.
通讯机构：
[Li, D ; Niu, CH ] C;Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China.;Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;Cent China Normal Univ, Inst Astrophys, Wuhan 430079, Peoples R China.;Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa.
关键词：
Fast Radio Bursts;star formation rate;multi-structural;repeaters
摘要：
Fast Radio Bursts (FRBs) are millisecond-duration transient events that are typically observed at radio wavelengths and cosmological distances but their origin remains unclear. Furthermore, most FRB origin models are related to the processes at stellar scales, involving neutron stars, blackholes, supernovae, etc. In this paper, our purpose is to determine whether multi-structural one-off FRBs and repeaters share similarities. To achieve this, we focus on analyzing the relationship between the FRB event rate and the star formation rate, complemented by statistical testing methods. Based on the CHIME/FRB Catalog 1, we calculate the energy functions for four subsamples, including apparent non-repeating FRBs (one-offs), repeaters, multi-structural one-offs, and the joint repeaters and multi-structural events, respectively. We then derive the FRB event rates at different redshifts for all four subsamples, all of which were found to share a similar cosmological evolution trend. However, we find that the multi-structural one-offs and repeaters are distinguishable from the KS and MWW tests.
作者机构：
[Qiu, Yi-Wei; Feng, Sheng-Qin] China Three Gorges Univ, Coll Sci, Yichang 443002, Peoples R China.;[Feng, Sheng-Qin] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;[Feng, Sheng-Qin] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Feng, Sheng-Qin] China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443002, Peoples R China.
通讯机构：
[Feng, SQ ] C;China Three Gorges Univ, Coll Sci, Yichang 443002, Peoples R China.;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443002, Peoples R China.
摘要：
We investigate the magnetized QCD matter and chiral phase transition in a (2 thorn 1)-flavor Nambu-Jona-Lasinio (NJL) model at finite temperature and chemical potential by comparing the contributions from the tensor spin polarization (TSP) and anomalous magnetic moment (AMM) of quarks. For light u and d quarks, when TSP and AMM are not considered, the magnetized system is characterized by magnetic catalysis. The introduction of TSP will further enhance the magnetic catalytic characteristics. On the other hand, when AMM is introduced, the phase-transition temperature decreases with the magnetic field, which is the feature of inverse magnetic catalysis. The phase diagram of u and d quarks will change from the crossover phase transition to the first order phase transition with the increase of magnetic field and chemical potential when AMM is induced. The phase diagram will not change from the crossover phase transition to the first-order phase transition when TSP is induced. For the phase diagram of strange s quark, whether TSP or AMM is induced, the phase diagram will keep a crossover phase transition with the increase of magnetic field and chemical potential.
期刊：
EPJ Web of Conferences,2023年276:03006-null ISSN：2100-014X
通讯作者：
Zhoul, YJ
作者机构：
[Zhoul, Yingjie] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Zhoul, Yingjie] Cent China Normal Univ, 1Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
通讯机构：
[Zhoul, YJ ] C;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;Cent China Normal Univ, 1Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
会议名称：
20th International Conference on Strangeness in Quark Matter (SQM)
会议时间：
JUN 13-18, 2022
会议地点：
Busan, SOUTH KOREA
会议主办单位：
[Zhoul, Yingjie] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.^[Zhoul, Yingjie] Cent China Normal Univ, 1Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
会议论文集名称：
EPJ Web of Conferences
关键词：
conference;proceedings;physics;astronomy;The European Physical Journal;EPJ
摘要：
Strangeness production has been suggested to be a sensitive probe to the early-time dynamics of the nuclear matter created in heavy-ion collisions. Transverse momentum distributions and yields of strange hadrons provide important information on their production mechanisms and can help us probe the properties of the created medium and its evolution. Thanks to the high statistics data taken during the STAR BES-II program in 2018-2021, a series of measurements on the properties of strangeness production at low energies are carried out. In these proceedings, the production of <i>K<i/><sup>−<sup/>, , <i>ϕ<i/>, <i>Λ<i/>, and Ξ<sup>−<sup/> in Au+Au collisions at GeV are presented. The strange hadron transverse momentum spectra, rapidity density distributions, and particle ratios are shown. These results are compared with UrQMD model calculations, and the extracted kinetic freeze-out parameters are discussed and compared with the ones from higher collision energies.
期刊：
Sensors and Actuators B-Chemical,2023年381:133429 ISSN：0925-4005
通讯作者：
Yan Wang
作者机构：
[Ma, Weijia; Wang, Yan] Hubei Minzu Univ, Sch Chem & Environm Engn, Enshi 445000, Peoples R China.;[Fu, Yuheng] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China.;[Tan, Jianfeng; Meng, Gaoxiang] Hubei Minzu Univ, Key Lab Green Mfg Superlight Elastomer Mat State E, Enshi 445000, Peoples R China.;[Tan, Jianfeng; Meng, Gaoxiang] Hubei Minzu Univ, Coll Intelligent Syst Sci & Engn, Enshi 445000, Peoples R China.;[Tan, Wenhu] Cent China Normal Univ, Dept Phys Sci & Technol, Wuhan 430079, Peoples R China.
通讯机构：
[Yan Wang] S;School of Chemical and Environmental Engineering, Hubei Minzu University, Enshi 445000, PR China
关键词：
Nature-inspired;Branch-leaf structure;Electronic structure regulation;Flexibility;Room-temperature;NO2 gas sensor
摘要：
Flexible room-temperature (RT) gas sensors are highly desirable due to their low power consumption and wearability. However, it is very challenging to integrate excellent mechanical flexibility and superior gas sensing properties. Here, polyacrylonitrile (PAN) nanofiber/cobalt-doping SnS2 nanosheets with nature-inspired "branch-leaf" structure was well tailored by directly grown Co-SnS2 ultrathin nanosheets on PAN nanofiber for the first time. With the interfacial bonding interaction between PAN substrate and SnS2 nanosheets, the geometrical deformability of composite structure, the interfacial bonding force, stress distribution, transfer and dissipation will be enhanced. Moreover, the electronic structure and S vacancy are regulated by Co-doping, then improve the gas transmission/diffusion, gas sensitive reactivity and carrier transfer/transport properties. The integrated RT NO2 gas sensor exhibits excellent flexibility (minimum radius of curvature is 3.9 mu m), high response, fast response/recovery speed (6.2 and 27.5/60 s). Meanwhile, it possesses a low detection limit and long-term sta-bility. This comprehensive strategy for the integration of mechanical and gas sensitive properties unlocks the inherent bottlenecks of conventional film-based gas sensors and open a new design avenue for the development of flexible electronics.
作者：
Ma, Yu-Gang*;Pang, Long-Gang;Wang, Rui;Zhou, Kai
期刊：
中国物理快报：英文版,2023年40(12):122101 ISSN：0256-307X
通讯作者：
Ma, Yu-Gang;Wang, R;Pang, LG;Zhou, K
作者机构：
[Wang, Rui; Ma, Yu-Gang] Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China.;[Wang, Rui; Ma, Yu-Gang] Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China.;[Pang, Long-Gang] NSFC, Shanghai Res Ctr Theoret Nucl Phys, Shanghai 200438, Peoples R China.;[Wang, Rui] Fudan Univ, Shanghai 200438, Peoples R China.;[Pang, Long-Gang] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Wang, R ; Ma, YG; Zhou, K ] F;[Pang, LG ] N;Fudan Univ, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China.;Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China.;NSFC, Shanghai Res Ctr Theoret Nucl Phys, Shanghai 200438, Peoples R China.
摘要：
In recent years, machine learning (ML) techniques have emerged as powerful tools for studying many-body complex systems, and encompassing phase transitions in various domains of physics. This mini review provides a concise yet comprehensive examination of the advancements achieved in applying ML to investigate phase transitions, with a primary focus on those involved in nuclear matter studies.
摘要：
In the context of constructing digital power grid, there has been significant attention on the methods to accurately and promptly obtain the physical field information of power equipment. The numerical methods, such as finite element analysis (FEA), are limited by offline computation and cannot meet the safety and timeliness requirements of the power grid. In this letter, a method based on deep neural networks (DNN) is proposed for rapidly predicting the magnetic field distribution of reactors. After training on magnetic field data generated by FEA simulation, the DNN takes the reactor current value as input and gets the simulation results processed using principal component analysis (PCA) within 1 s. The trained DNN has a mean absolute percentage error (MAPE) of 0.012% in predicting the magnetic field distribution of reactor. This method demonstrates the viability of replacing traditional simulation methods with DNN to expand the applications of digital twin in the power grid.
