检索结果-内蒙古大学图书馆

SSRN 2023年

作者： Duan, Wenjun Han, Jiachen Yang, Shuo Wang, Zhimei Yu, Qingbo Zhan, Yaquan School of Metallurgy Northeastern University No 11 Lane 3 Wenhua Road Heping District Liaoning Shenyang110819 China College of Energy and Environment Shenyang Aerospace University No. 37 Daoyi South Street Shenbei New District Liaoning Shenyang110136 China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern University Shenyang110819 China Key Laboratory of Data Analytics and Optimization for Smart Industry [Northeastern University Ministry of Education China

A novel technology for high-value utilization of blast furnace slag, a main by-product in iron and steel industry, was proposed to address CO2 capture. Layered double hydroxides derived from blast furnace slag served as the raw material for producing efficient CO2 adsorbents, referred to as layered double oxides. Detailed investigations were conducted to compare the characteristics of the raw material and the resulting adsorbent. Significantly, the laminate structure of layered double hydroxides changed in microstructure, particle size distribution and functional groups. In thermal transformation, about 30% weight was lost, forming layered double oxides with CaO, Ca12Al14O32Cl2 and MgO phases. The transformation mechanism for preparing layered double oxides was elucidated. Additionally, the CO2 adsorption performance of layered double oxides was studied, and a suitable kinetic model was established. Under conditions of 15% CO2 concentration and 873 K temperature, the sample exhibited a CO2 capacity of approximately 147.49 mg‧g-1. The optimal kinetic mechanism model for CO2 adsorption was identified as PSO, with activation energy and pre-exponential factors of 56.88 kJ‧mol-1 and 12.26 min-1, respectively. This study successfully achieved dual goals: reducing CO2 emissions and maximizing the value of solid waste in iron and steel industry. © 2023, The Authors. All rights reserved.

关键词： Slags

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Quantum controlling and the topological properties of the magnon photo-transport in two-dimensional collinear ferromagnet

arXiv

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arXiv 2025年

作者： Li, Jun-Cen Du, An College of Sciences Northeastern University Shenyang110004 China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern University China Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern University Ministry of Education China

In our work, we study magnon transport induced by light through Aharonov-Casher (AC) effect, including magnon spin photocurrent (MSPC) and magnon energy photocurrent (MEPC). Firstly, we regard the effect of the electric field on the magnon through the AC effect as a perturbation. Then we derived the expressions of MSPC and MEPC in two-dimensional collinear ferromagnetic system. And we apply our theory to the two-dimension ferromagnetic Hexagonal and Kagome lattice. We find that the optical frequency and the relaxation time of the material can be used to control the photo-transport of magnons. In addition, under the condition of low light frequncy and infinite relaxation time, the longitudinal magnon photo-transport is related to the topological property of the magnon system. Copyright © 2025, The Authors. All rights reserved.

关键词： Ferromagnetic materials

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Using a multi-messenger and multi-wavelength observational strategy to probe the nature of dark energy through direct measurements of cosmic expansion history

arXiv

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arXiv 2021年

作者： Qi, Jing-Zhao Jin, Shang-Jie Fan, Xi-Long Zhang, Jing-Fei Zhang, Xin Department of Physics College of Sciences MOE Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern University Shenyang110819 China School of Physics and Technology Wuhan University Wuhan430072 China

In the near future, the redshift drift observations in optical and radio bands will provide precise measurements on H(z) covering the redshift ranges of 2 0) = 0:024 and σ(wa) = 0:17 in the CPL model, which means tha... 详细信息

关键词： Gravity waves

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Cosmology with fast radio bursts in the era of SKA

arXiv

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arXiv 2023年

作者： Zhang, Ji-Guo Zhao, Ze-Wei Li, Yichao Zhang, Jing-Fei Li, Di Zhang, Xin Department of Physics College of Sciences Northeastern University Shenyang110819 China Northeastern University Shenyang110819 China National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China University of Chinese Academy of Sciences Beijing100049 China Research Center for Intelligent Computing Platforms Zhejiang Laboratory Hangzhou311100 China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern University Shenyang110819 China Key Laboratory of Data Analytics and Optimization for Smart Industry Ministry of Education Northeastern University Shenyang110819 China

We present a forecast of the cosmological parameter estimation using fast radio bursts (FRBs) from the upcoming Square Kilometre Array (SKA), focusing on the issues of dark energy, the Hubble constant, and baryon density. We simulate 105 and 106 localized FRBs from a 10-year SKA observation, and find that: (i) using 106 FRB data alone can tightly constrain dark-energy equation of state parameters better than CMB+BAO+SNe, providing an independent cosmological probe to explore dark energy;(ii) combining the FRB data with gravitational-wave standard siren data from 10-year observation with the Einstein Telescope, the Hubble constant can be constrained to a sub-percent level, serving as a powerful low-redshift probe;(iii) using 106 FRB data can constrain the baryon density Ωbh to a precision of ∼ 0.1%. Our results indicate that SKA-era FRBs will provide precise cosmological measurements to shed light on both dark energy and the missing baryon problem, and help resolve the Hubble tension. Copyright © 2023, The Authors. All rights reserved.

关键词： Cosmology

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A new way to explore cosmological tensions using gravitational waves and strong gravitational lensing

arXiv

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arXiv 2021年

作者： Cao, Meng-Di Zheng, Jie Qi, Jing-Zhao Zhang, Xin Zhu, Zong-Hong Department of Astronomy Beijing Normal University Beijing100875 China Department of Physics College of Sciences & MOE Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern University Shenyang110819 China

In recent years, a crisis in the standard cosmology has been caused by inconsistencies in the measurements of some key cosmological parameters, Hubble constant H0 and cosmic curvature parameter ΩK for example. It is necessary to remeasure them with the cosmological model-independent methods. In this paper, based on the distance sum rule, we present such a way to constrain H0 and ΩK simultaneously in the late universe from strong gravitational lensing time delay (SGLTD) data and gravitational wave (GW) standard siren data simulated from the future observation of the Einstein Telescope (ET). Based on the currently 6 observed SGLTD data, we find that the constraint precision of H0 from the combined 100 GW events can be comparable with the measurement from SH0ES collaboration. As the number of GW events increases to 700, the constraint precision of H0 will exceed that of the Planck 2018 results. Considering 1000 GW events as the conservative estimation of ET in ten-year observation, we obtain H0 = 73.69 ± 0.36 km s−1 Mpc−1 with a 0.5% uncertainty and ΩK = 0.076+0−0.068087. In addition, we simulate 55 SGL systems with 6.6% uncertainty for the measurement of time-delay distance. By combining with 1000 GWs, we infer that H0 = 73.65±0.35 km s−1 Mpc−1 and ΩK = 0.008±0.048. Our results suggest that this approach can play an important role in exploring cosmological tensions. Copyright © 2021, The Authors. All rights reserved.

关键词： Gravity waves

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Alternating current conductivity and superconducting properties of the holographic effective theory

arXiv

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arXiv 2022年

作者： Liu, Yan Wang, Xi-Jing Wu, Jian-Pin Zhang, Xin Department of Physics College of Sciences Northeastern University Shenyang110819 China Center for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University Yangzhou225009 China Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern University Shenyang110819 China Key Laboratory of Data Analytics and Optimization for Smart Industry Ministry of Education Northeastern University Shenyang110819 China

We construct a holographic effective superconducting theory by considering a special gauge-axion higher derivative term. The gauge-axion coupling results in the transport behavior similar to the vortex response in the dual boundary field theory leading to non-Drude behavior of alternating current (AC) conductivity at the weak momentum dissipation. With the momentum dissipation increasing, a dip exhibits in the AC conductivity at low frequency. It is thought to be the result of a combination of the strong momentum dissipation and the gauge-axion coupling. In the superconducting phase, this gauge-axion coupling also plays a key role leading to a more evident gap at the low frequency conductivity. In addition, we also study the combined effects of the strength of momentum dissipation and various couplings among the gauge field, axion fields and the complex scalar field. Copyright © 2022, The Authors. All rights reserved.

关键词： Momentum

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Exploring neutrino mass and mass hierarchy in interacting dark energy models

引用

Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 55-63页

作者： Lu Feng Hai-Li Li Jing-Fei Zhang Xin Zhang College of Physical Science and Technology Shenyang Normal UniversityShenyang 110034China Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Ministry of Education Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern UniversityShenyang 110819China Center for High Energy Physics Peking UniversityBeijing 100080China Center for Gravitation and Cosmology Yangzhou UniversityYangzhou 225009China

We investigate how the dark energy properties impact the constraints on the total neutrino mass in interacting dark energy（IDE）models. In this study, we focus on two typical interacting dynamical dark energy models, i.e., the interacting w cold dark matter（IwCDM） model and the interacting holographic dark energy（IHDE） model. To avoid the large-scale instability problem in IDE models, we apply the parameterized post-Friedmann approach to calculate the perturbation of dark energy. We employ the Planck 2015 cosmic microwave background temperature and polarization data, combined with low-redshift measurements on baryon acoustic oscillation distance scales, type Ia supernovae, and the Hubble constant, to constrain the cosmological parameters. We find that the dark energy properties could influence the constraint limits on the total neutrino mass. Once dynamical dark energy is considered in the IDE models, the upper bounds of ∑mν will be changed. By considering the values of χmin2 , we find that in these IDE models the normal hierarchy case is slightly preferred over the inverted hierarchy case; for example, ?χ2= 2.720 is given in the IHDE+∑mν model. In addition, we also find that in the Iw CDM+∑mν model β = 0 is consistent with current observational data inside the 1σ range, and in the IHDE+∑mν model β > 0 is favored at more than 2σ level.

关键词： neutrino mass mass hierarchies of neutrinos interacting dark energy cosmological observations cosmological constraints

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Molten-Salt Enhanced Anodic Oxidation for Upcycling Alloy Scraps

SSRN

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SSRN 2022年

作者： Zhao, Yan Chen, Xiang Qu, Jiakang Xie, Hongwei Du, Kaifa Xing, Pengfei Wang, Dihua Sun, Yuan Yin, Huayi Key Laboratory for Ecological Metallurgy of Multimetallic Mineral of Ministry of Education School of metallurgy Northeastern University Shenyang110819 China School of Resource and Environmental Science Wuhan University Wuhan430072 China Institute of Metal Research Chinese Academy of Sciences Shenyang110819 China Key Laboratory of Data Analytics and Optimization for Smart Industry of Ministry of Education Northeastern University Shenyang110819 China

Reclaiming valuable metals from spent alloys involves energy-intensive pulverization and the sluggish dissolution rate. Herein, we propose an enhanced corrosion strategy to convert alloy scraps to oxide powders. The oxidation rate reaches ~1.67 mm h-1 in molten CaCl2 -NaCl-CaO at 700 oC because Cl- excludes passivation and enables continuous oxidation. In addition, the soluble CaO in molten CaCl2-NaCl prevents the generation of transition metal chlorides, which relieves using the expensive ion-selective membrane to eliminate the parasitic reaction. Overall, the molten salt enhanced anodic corrosion provides a green and general way to achieve the pulverization and oxidation of various alloy scraps. © 2022, The Authors. All rights reserved.

关键词： Sodium chloride

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Prospects for constraining interacting dark energy models with 21 cm intensity mapping experiments

arXiv

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arXiv 2021年

作者： Zhang, Ming Wang, Bo Wu, Peng-Ju Qi, Jing-Zhao Xu, Yidong Zhang, Jing-Fei Zhang, Xin Department of Physics College of Sciences MOE Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern University Shenyang110819 China National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China

We forecast constraints on cosmological parameters in the interacting dark energy models using the mock data generated for neutral hydrogen intensity mapping (IM) experiments. In this work, we only consider the interacting dark energy models with energy transfer rate Q = βHρc, and take BINGO, FAST, SKA1-MID, and Tianlai as typical examples of the 21 cm IM experiments. We find that the Tianlai cylinder array will play an important role in constraining the interacting dark energy model. Assuming perfect foreground removal and calibration, and using the Tianlai-alone data, we obtain σ(H0) = 0.19 km s−1 Mpc−1, σ(Ωm) = 0.0033 and σ(σ8) = 0.0033 in the IΛCDM model, which are much better than the results of Planck+optical BAO (i.e. optical galaxy surveys). However, the Tianlai-alone data cannot provide a very tight constraint on the coupling parameter β compared with Planck+optical BAO, while the Planck+Tianlai data can give a rather tight constraint of σ(β) = 0.00023 due to the parameter degeneracies being well broken by the data combination. In the IwCDM model, we obtain σ(β) = 0.00079 and σ(w) = 0.013 from Planck+Tianlai. In addition, we also make a detailed comparison among BINGO, FAST, SKA1-MID, and Tianlai in constraining the interacting dark energy models. We show that future 21 cm IM experiments will provide a useful tool for exploring the nature of dark energy and play a significant role in measuring the coupling between dark energy and dark matter. © 2021, CC BY.

关键词： Galaxies

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Holographic superfluid with gauge-axion coupling

arXiv

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arXiv 2022年

作者： Liu, Yan Wang, Xi-Jing Wu, Jian-Pin Zhang, Xin Department of Physics College of Sciences Northeastern University Shenyang110819 China Center for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University Yangzhou225009 China National Frontiers Science Center for Industrial Intelligence and Systems Optimization Northeastern University Shenyang110819 China Key Laboratory of Data Analytics and Optimization for Smart Industry Northeastern University Ministry of Education Shenyang110819 China

We have constructed a holographic superfluid with gauge-axion coupling. Depending on whether the coupling is positive or negative, the system displays metallic or insulating behavior in its normal state. A significant feature of the system is the appearance of a mid-IR peak in the alternating current (AC) conductivity in a certain range of parameters. This peak arises due to competition between explicit symmetry breaking (ESB) and spontaneous symmetry breaking (SSB), which results in the presence of a pseudo-Goldstone mode. Moreover, a dip in low-frequency AC conductivity is observed, stemming from the excitation of the SSB Goldstone mode. In the superfluid phase, the effect of gauge-axion coupling on the condensation or superfluid energy gap is only amplified in the presence of strong momentum dissipation. Notably, for the case with negative gauge-axion coupling, a hard-gap-like behavior at low frequency and a pronounced peak at intermediate frequency are observed, indicating that the evolution of the superfluid component is distinct from that of positive coupling. Copyright © 2022, The Authors. All rights reserved.

关键词： Gages

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