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The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite

Research in Astronomy and Astrophysics 2023年第9期23卷 66-78页

作者： Z.X.Ling X.j.Sun C.Zhang S.L.Sun G.jin S.N.Zhang X.F.Zhang j.B.Chang F.S.Chen Y.F.Chen Z.w.Cheng w.Fu Y.X.Han H.Li j.F.Li Y.Li Z.D.Li P.R.Liu Y.H.Lv X.H.Ma Y.j.Tang C.B.wang R.j.Xie Y.L.Xue A.L.Yan Q.Zhang C.Y.Bao H.B.Cai H.Q.Cheng C.Z.Cui Y.F.Dai D.w.Fan H.B.hu j.w.hu M.H.huang Z.Q.jia C.C.jin D.Y.Li j.Q.Li H.Y.Liu M.j.Liu Y.Liu H.w.Pan Y.L.Qiu M.Sugizaki H.Sun w.X.wang Y.L.wang Q.Y.wu X.P.Xu Y.F.Xu H.N.Yang X.Yang B.Zhang M.Zhang w.D.Zhang Z.Zhang D.H.Zhao X.Q.Cong B.w.jiang L.H.Li X.B.Qiu j.N.Sun D.T.Su j.wang C.wu Z.Xu X.M.Yang S.K.Zhang Z.Zhang N.Zhang Y.F.Zhu H.Y.Ban X.Z.Bi Z.M.Cai w.Chen X.Chen Y.H.Chen Y.Cui X.L.Duan Z.G Feng Y.Gao j.w.He T.He j.j.huang F.Li j.S.Li T.j.Li T.T.Li H.Q.Liu L.Liu R.Liu S.Liu N.Meng Q.Shi A.T.Sun Y.M.wang Y.B.wang H.C.wu D.X Xu Y.Q Yang Y.Yang X.S.Yu K.X.Zhang Y.L.Zhang Y.H.Zhang Y.T.Zhang H.Zhou X.C.Zhu j.S.Cheng L.Qin L.wang Q.L.wang M.Bai R.L.Gao Z.ji Y.R.Liu F.L.Ma Y.j.Shi j.Su Y.Y.Tan j.Z.Tong H.T.Xu C.B.Xue G.F.Xue w.Yuan National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China North Night Vision Technology Co. LTDNanjing 211106China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Science and Technology on Low-Light-Level Night Vision Laboratory Xi'an 710065China Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201204China Institute of Electrical Engineering Chinese Academy of ScienceBeijing 100190China National Space Science Center Chinese Academy of ScienceBeijing 100190China

The Lobster Eye Imager for Astronomy(LEIA),a pathfinder of the wide-field X-ray Telescope of the Einstein Probe mission,was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on2022 july *** this paper,we introduce the design and on-ground test results of the LEIA *** stateof-the-art Micro-Pore Optics(MPO),a wide field of view of 346 square degrees(18.6°×18.6°)of the X-ray imager is *** optical assembly composed of 36 MPO chips is used to focus incident X-ray photons,and four large-format complementary metal-oxide semiconductor(CMOS)sensors,each of size 6 cm×6 cm,are used as the focal plane *** instrument has an angular resolution of 4’-8’(in terms of FwHM)for the central focal spot of the point-spread function,and an effective area of 2-3 cm^(2) at 1 keV in essentially all the directions within the field of *** detection passband is 0.5-4 keV in soft X-rays and the sensitivity is2-3×10^(-11) erg s^(-1) cm^(-2)(about 1 milliCrab)with a 1000 s *** total weight of LEIA is 56 kg and the power is 85 *** satellite,with a design lifetime of 2 yr,operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 *** is paving the way for future missions by verifying in flight the technologies of both novel focusing imaging optics and CMOS sensors for X-ray observation,and by optimizing the working setups of the instrumental *** addition,LEIA is able to carry out scientific observations to find new transients and to monitor known sources in the soft X-ray band,albeit with limited useful observing time available.

关键词： instrumentation detectors-space vehicles instruments-telescopes-X-rays genera

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau juanxiu Xiao wei Xiao Di hu Guoxiong wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Methane Electrochemical conversion Reaction mechanism Catalyst design Electrode Electrocatalysis

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社交媒体健康信息用户信任形成机理研究

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现代情报 2025年第1期45卷 97-111页

作者：初彦伯王萍胡姝姝吉林大学商学与管理学院吉林长春130012

[目的/意义]在公共卫生事件频发的背景下,国民对健康信息需求急剧增长。社交媒体作为用户信息获取的重要途径之一,在高效传播健康信息的同时,也为虚假健康信息的产生和传播提供便利条件。随着社交媒体渗透力和影响力不断扩大,用户对健... 详细信息

[目的/意义]在公共卫生事件频发的背景下,国民对健康信息需求急剧增长。社交媒体作为用户信息获取的重要途径之一,在高效传播健康信息的同时,也为虚假健康信息的产生和传播提供便利条件。随着社交媒体渗透力和影响力不断扩大,用户对健康信息的不确定感愈发强烈。鉴于此,本文对社交媒体健康信息用户的信任形成机理进行探索,以期为后续相关研究提供参考和借鉴。[方法/过程]解构社交媒体健康信息用户信任形成的要素,建构面向用户感知过程的信任综合框架,从用户、信息和环境3个方面提出社交媒体健康信息用户信任理论假设模型,并对结构模型进行修正。[结果/结论]研究从理论层面明晰社交媒体健康信息用户感知信任过程以及用户心理变化的进程。研究还发现热评情感极性、涉入度、信源可信度、冲突解决对信任存在显著的正向影响。信任对采纳意愿存在显著的正向影响。参照群体规范对采纳意愿存在显著的正向影响。此外,信任分别在热评情感极性、涉入度、信源可信度和冲突解决与信息采纳意愿之间起到完全中介作用。

关键词：社交媒体健康信息信任感知可信度

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Ultrasonic solidification mechanism and optimized application performances of ternary Mg_(71.5)Zn_(26.1)Y_(2.4) alloy

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journal of Magnesium and Alloys 2023年第10期11卷 3829-3839页

作者： Y.j.hu j.Y.wang w.Zhai B.wei School of Physical Science and Technology Northwestern Polytechnical UniversityXi’an 710072China

One dimensional(1D) and three dimensional(3D) ultrasound sources were applied to the solidification process of Mg_(71.5)Zn_(26.1)Y_(2.4) *** acoustic spectra were in-situ measured, based on which the cavitation intensities and dynamic solidification mechanism were further investigated. with the increase of ultrasonic dimension and amplitude, the primary Mg_(3)Zn_(6)Y phase was significantly refined from petals to nearly pentagonal shape. The sound field measurements showed that the transient cavitation played a decisive role in generating a high local undercooling, which facilitated the formation of icosahedral clusters and promoted the nucleation of primary Mg_(3)Zn_(6)Y phase. The morphological transition of(α-Mg+Mg_(3)Zn_(6)Y) eutectic from lamellar to anomalous structure occurred under 3D ultrasonic condition. The stable cavitation took the main responsibility because the high pressure excited by nonlinearly oscillating bubbles induced the preferential nucleation of α-Mg phase rather than Mg_(3)Zn_(6)Y phase. As compared with its static values, the tensile strength and compression plasticity of this alloy were increased by the factors of 1.9 and 2.1, and its corrosion resistance was also improved with the corrosion current density decreased by one order of magnitude.

关键词： Three dimensional ultrasounds Quasicrystalline Mg_(3)Zn_(6)Y phase Anomalous eutectic Mechanical performances Corrosion resistance

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基于细节增强和多颜色空间学习的联合监督水下图像增强算法

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现代电子技术 2025年第1期48卷 23-28页

作者：胡锐程家亮胡伏原苏州科技大学信息化建设与管理中心江苏苏州215009 苏州科技大学电子与信息工程学院江苏苏州215009

由于水下特殊的成像环境,水下图像往往具有严重的色偏雾化等现象。因此文中根据水下光学成像模型设计了一种新的增强算法,即基于细节增强和多颜色空间学习的无监督水下图像增强算法(UUIE-DEMCSL)。该算法设计了一种基于多颜色空间的增... 详细信息

由于水下特殊的成像环境,水下图像往往具有严重的色偏雾化等现象。因此文中根据水下光学成像模型设计了一种新的增强算法,即基于细节增强和多颜色空间学习的无监督水下图像增强算法(UUIE-DEMCSL)。该算法设计了一种基于多颜色空间的增强网络,将输入转换为多个颜色空间(HSV、RGB、LAB)进行特征提取,并将提取到的特征融合,使得网络能学习到更多的图像特征信息,从而对输入图像进行更为精确的增强。最后,UUIE-DEMCSL根据水下光学成像模型和联合监督学习框架进行设计,使其更适合水下图像增强任务的应用场景。在不同数据集上大量的实验结果表明,文中提出的UUIE-DEMCSL算法能生成视觉质量良好的水下增强图像,且各项指标具有显著的优势。

关键词：水下图像增强多颜色空间学习无监督学习细节增强特征提取特征融合

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ELECTROANALYTICAL APPLICATIONS OF CARBOXYL-MODIFIED CARBON NANOTUBE FILM ELECTRODES

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Acta Metallurgica Sinica(English Letters) 2003年第4期16卷 289-294页

作者： C.G.hu w.L.wang K.j.Liao w.Zhu DepartmentofAppliedPhysics ChongqingUniversityChongqing400044China KeyLaboftheEducationMinistryforPhotoelectricTechnologyandSystem ChongqingUniversityChongqing400044China DepartmentofChemistry ChongqingUniversityChongqing400044ChinaManuscriptreceived25November2002

The electrochemical behavior of a carboxyl-modified carbon nanotube films was investigated to explore its possibility in electroanalytical applicaton. Cyclic voltammetry of quinone was conducted in 1mol/L Na2SO4, which showed a stable, quasi-reversible voltammetric response for quinone / hydroquinone, and the anodic and the cathodic peak potentials were 0.657V and -0.029V (vs. SCE) at a scan rate of 0.1V.s-1, respectively. Both anodic and cathodic peak currents depended linearly on the square root of the scan rate over the range of 0.01-0.5V.s-1, which suggested that the process of the electrode reactions was diffusion-controlled. Carboxyl-modified carbon nanotube electrodes made it possible to determine low level of dopamine selectively in the presence of a large excess of ascorbic acid in acidic media using derivative voltammetry. The results obtained were discussed in details. This work demonstrates the potential of carboxyl-modified carbon nanotube electrodes for electroanalytical applications.

关键词： carbon nanotube electrochemistry carboxyl modification dopamine

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基于古代汉语实践思维的大棚温室无线控制系统

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农机化研究 2025年第4期47卷 218-223页

作者：罗杨胡士强宜宾学院四川宜宾644000 红河学院云南红河661100

为了实现对大棚温室内环境的实时监测和控制,提高农作物的生长质量和产量,将古代汉语实践思维注重实际应用和实践操作、强调“知行合一”的理念,应用到大棚温室无线控制系统的设计中,注重系统的实际应用,通过设计无线采集子模块、无线... 详细信息

为了实现对大棚温室内环境的实时监测和控制,提高农作物的生长质量和产量,将古代汉语实践思维注重实际应用和实践操作、强调“知行合一”的理念,应用到大棚温室无线控制系统的设计中,注重系统的实际应用,通过设计无线采集子模块、无线控制子模块、供电网络子模块和各个子电路,实现了整个系统。测试结果表明:系统采集温度的差值为±0.2℃,相对湿度差值为±2%RH,且与系统预设的温湿度值基本一致,准确性较高,符合设计需求。

关键词：大棚无线控制农作物古代汉语实验思维

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Real-world analysis of two ischaemic stroke and TIA systolic blood pressure goals on 12-month mortality and recurrent vascular events

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Stroke & Vascular Neurology 2024年第5期9卷 519-529页

作者： jason j Sico Xin hu Laura j Myers Deborah Levine Dawn M Bravata Greg w Arling Internal Medicine and Neurology Yale University School of MedicineNew HavenConnecticutUSA Department of Neurology Veterans Affairs Connecticut Healthcare SystemWest HavenConnecticutUSA Yale School of Public Health New HavenConnecticutUSA VA Health Services Research and Development(HSR&D)Center for Healthcare Informatics and Communication and the HSR&D Stroke Quality Enhancement Research Initiative(QUERI) IndianapolisIndianaUSA Richard L.Roudebush VA Medical Center IndianapolisIndianaUSA Departments of Medicine and Neurology University of Michigan School of MedicineAnn ArborMichiganUSA Health Services Research and Development(HSR&D)Center for Healthcare Informatics and Communication and the HSR&D Stroke Quality Enhancement Research Initiative(QUERI) Department of Veterans Affairs(VA) Health Services Research and Development(HSR&D)Precision Monitoring to Transform Care(PRISM)Quality Enhancement Research Initiative(QUERI)IndianapolisIndianaUSA Department of Nursing Purdue UniversityWest LafayetteIndianaUSA

Introduction whether obtaining the more intensive goal systolic blood pressure(SBP)of140mm Hg).Separate multivariable Cox proportional hazard regressions were used to examine the relationship between average SBP group... 详细信息

Introduction whether obtaining the more intensive goal systolic blood pressure(SBP)ofwith incremental mortality and recurrent vascular event benefit is largely unexplored using real-world *** SBP excessively may result in poorer *** This is a retrospective cohort study of 26368 Veterans presenting to a Veterans Administration Medical Center(VAMC)with a stroke/TIA between October 2015 and july *** were excluded from the study if they had missing or extreme BP values,receiving dialysis or palliative care,left against medical advice had a cancer diagnosis,were cared for in a VAMC enrolled in a stroke/TIA quality improvement initiative,died or had a cerebrovascular or cardiovascular event within 90 days after their index stroke/*** analytical sample included 12337 *** SBP during 90 days after discharge was assessed in categories(≤105mm Hg,106–115mm Hg,116–130mm Hg,131–140mm Hg and>140mm Hg).Separate multivariable Cox proportional hazard regressions were used to examine the relationship between average SBP groups and time to:(1)mortality and(2)any recurrent vascular event,from 90 days to up to 365 days after discharge from the index emergency department visit or inpatient *** Compared with those with SBP>140mm Hg,patients with SBP between 116 and 130mm Hg had a significantly lower risk of recurrent stroke/TIA(HR 0.77,95%CI 0.60 to 0.99)but not cardiovascular *** with SBP lower than 105mm Hg,compared with those with>140mm Hg demonstrated a statistically significant higher risk of death(HR 2.07,95%CI 1.43 to 3.00),but no statistical differences were found in other SBP *** Data support a more intensive SBP goal to prevent recurrent cerebrovascular events among stroke/TIA patients by 90 days poststroke/TIA compared with less intensive *** low SBPs were associated wit

关键词： dialysis diagnosis TIA

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Vibration control of fluid-conveying pipes: a state-of-the-art review

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Applied Mathematics and Mechanics(English Edition) 2023年第9期44卷 1423-1456页

作者： hu DING j.C.jI Shanghai Key Laboratory of Mechanics in Energy Engineering School of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China Shaoxing Institute of Technology Shanghai UniversityShaoxing 312074Zhejiang ProvinceChina Shanghai Institute of Aircraft Mechanics and Control Shanghai 200092China School of Mechanical and Mechatronic Engineering University of Technology SydneyNew South Wales 2007Australia

Fluid-conveying pipes are widely used to transfer bulk fluids from one point to another in many engineering *** are subject to various excitations from the conveying fluids,the supporting structures,and the working environment,and thus are prone to vibrations such as flow-induced vibrations and acoustic-induced *** can generate variable dynamic stress and large deformation on fluid-conveying pipes,leading to vibration-induced fatigue and damage on the pipes,or even leading to failure of the entire piping system and catastrophic ***,the vibration control of fluid-conveying pipes is essential to ensure the integrity and safety of pipeline systems,and has attracted considerable attention from both researchers and *** present paper aims to provide an extensive review of the state-of-the-art research on the vibration control of fluid-conveying *** vibration analysis of fluid-conveying pipes is briefly discussed to show some key issues involved in the vibration ***,the research progress on the vibration control of fluid-conveying pipes is reviewed from four aspects in terms of passive control,active vibration control,semi-active vibration control,and structural optimization design for vibration ***,the main results of existing research on the vibration control of fluid-conveying pipes are summarized,and future promising research directions are recommended to address the current research *** paper contributes to the understanding of vibration control of fluid-conveying pipes,and will help the research work on the vibration control of fluidconveying pipes attract more attention.

关键词： fuid-conveying pipe vibration passive control nonlinear energy sink(NES) active control semi-active control

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语音情感识别在联合收割机疲劳驾驶预警中的研究——基于汉语语言音韵

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农机化研究 2025年第3期47卷 202-206页

作者：胡士强罗杨红河学院云南红河661100 宜宾学院四川宜宾644000

通过汉语语言音韵的语音情感识别实现联合收割机疲劳驾驶检测具有非侵入性、高效准确、实时性强、可普及性强和应用场景广泛等优点。因此,为了提高疲劳驾驶准确识别率,将梅尔频率倒谱系数和汉语语言音韵融合在一起,利用高斯混合模型和... 详细信息

通过汉语语言音韵的语音情感识别实现联合收割机疲劳驾驶检测具有非侵入性、高效准确、实时性强、可普及性强和应用场景广泛等优点。因此,为了提高疲劳驾驶准确识别率,将梅尔频率倒谱系数和汉语语言音韵融合在一起,利用高斯混合模型和极限学习机作为分类器进行语音疲劳检测。检测结果表明:该方法疲劳识别率很高,平均正确识别率达到了93.17%,具有较高的实用价值和推广价值。

关键词：汉语语言音韵情感识别联合收割机疲劳驾驶

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