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Two-plasmon-decay instability stimulated by dual laser beams in inertial confinement fusion

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Matter and Radiation at Extremes 2025年第1期10卷 48-56页

作者： C.-W.Lian Y.ji R.Yan j.Li L.-f.Wang Y.-K.Ding j.Zheng Department of Modern Mechanics University of Science and Technology of ChinaHefeiAnhui 230026China Collaborative Innovation Center of IfSA Shanghai Jiao Tong UniversityShanghai 200240China Department of Plasma Physics and fusion Engineering University of Science and Technology of ChinaHefei 230026China Institute of Applied Physics and Computational Mathematics Beijing 100088China

Two-plasmon-decay instability(TPD)poses a critical target preheating risk in direct-drive inertial confinement *** this paper,TPD collectively driven by dual laser beams consisting of a normal-incidence laser beam(Beam-N)and a large-angle-incidence laser beam(Beam-L)is investigated via particle-in-cell *** is found that significant TPD growth can develop in this regime at previously unexpected low laser intensities if the intensity of Beam-L exceeds the large-angle-incidence *** beams contribute to the growth of TPD in a“seed-amplification”manner in which the absolute instability driven by Beam-L provides the seeds that are convectively amplified by Beam-N,making TPD energetically important and causing significant pump depletion and hot-electron generation.

关键词： laser pump decay

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经济地生产电动汽车

现代制造 2025年第02期 26-27页

作者： jürgen fürst

磨削良好的大前角可转位刀片适合于在特种加工中使用,也适合于加工特种材料。在切削加工那些不稳定的工件时和在切削散热性能很差的坚硬材料时,这种可转位刀片都有着上佳表现。德国施瓦本地区的Karl Heinz Arnod有限公司30多年来就一直...

磨削良好的大前角可转位刀片适合于在特种加工中使用,也适合于加工特种材料。在切削加工那些不稳定的工件时和在切削散热性能很差的坚硬材料时,这种可转位刀片都有着上佳表现。德国施瓦本地区的Karl Heinz Arnod有限公司30多年来就一直致力于将自己研发制造的可转位刀片技术推向顶峰。它们研发生产的Arno系列大前角可转位刀片为全球众多的机械加工企业提供了大量的选择可能性。今天,聪明的刀具客户已经在电动汽车零部件的生产过程中采用了更加经济、更加有利于企业健康发展的切削加工技术,减少了费用开支。

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Implementation of a double trigger condition system based on charge comparison and TOf measurement for the NEDA detector array

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Nuclear Science and Techniques 2025年第2期36卷 40-48页

作者： j.M.Deltoro A.Goasduff f.j.Egea V.González A.Gadea R.M.Pérez-Vidal I.Lazarus M.Kogimtzis L.McNicholl M.Palacz G.jaworski j.j.Valiente-Dobón j.Nyberg S.Casans A.E.Navarro-Antón E.Sanchis A.Boujrad E.Clément T.Hüyük R.Illicachi O.Stezowski V.Modamio Department of Electronic Engineering University of ValenciaBurjassotValenciaSpain Istituto Nazionale di fisica Nucleare Laboratori Nazionali di LegnaroLaboratori Nazionali di LegnaroLegnaroPadovaItaly Instituto de física Corpuscular CSIC-Universidad de ValenciaCSIC-Universidad de Valencia46980 PaternaValenciaSpain Science and Technology facilities Council DaresburyUK Heavy Ion Laboratory University of Warsaw02-093 WarsawPoland Department of Physics and Astronomy Uppsala UniversityUppsalaSweden Grand Accélérateur National d’Ions Lourds(GANIL) CEA/DRF-CNRS/IN2P3CEA/DRF-CNRS/IN2P3CaenFrance Universitéde Lyon UniversitéLyon-1CNRS/IN2P3UMR5822IP2IIP2I4 Rue Enrico Fermi69622 Villeurbanne CedexFrance Department of Physics University of Oslo0316 OsloNorway

The NEutron Detector Array(NEDA)is designed to be coupled to gamma-ray spectrometers to enhance the sensitivity of the setup by enabling reaction channel selection through counting of the evaporated *** article presents the implementation of a double trigger condition system for NEDA,which improves the acquisition of neutrons and reduces the number of gamma rays *** independent triggers are generated in the double trigger condition system:one based on charge comparison(CC)and the other on time-of-flight(TOf).These triggers can be combined using OR and AND logic,offering four distinct trigger *** developed firmware is added to the previous one in the Virtex 6 field programmable gate array(fPGA)present in the system,which also includes signal processing,baseline correction,and various trigger logic *** performance of the trigger system is evaluated using data from the E703 experiment performed at *** four trigger modes are applied to the same data,and a subsequent offline analysis is *** is shown that most of the detected neutrons are preserved with the AND mode,and the total number of gamma rays is significantly *** with the CC trigger mode,the OR trigger mode allows increasing the selection of *** addition,it is demonstrated that if the OR mode is selected,the online CC trigger threshold can be raised without losing neutrons.

关键词： Neutron detector Neutron-gamma discrimination Pulse shape analysis Time-of-flight Charge comparison

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Numerical Simulation of Blood flow Dynamics in a Stenosed Artery Enhanced by Copper and Alumina Nanoparticles

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1839-1864页

作者： Haris Alam Zuberi Madan Lal Amol Singh Nurul Amira Zainal Ali j.Chamkha Department of Applied Mathematics M.J.P.Rohilkhand UniversityBareilly243006India fakulti Teknologi dan Kejuruteraan Mekanikal Universiti Teknikal MalaysiaMelaka76100Malaysia forecasting and Engineering Technology Analysis(fETA)Research Group Universiti Teknikal MalaysiaMelaka76100Malaysia faculty of Engineering Kuwait College of Science and TechnologyDoha35004Kuwait

Nanotechnology holds immense importance in the biomedical field due to its ability to revolutionize healthcare on a molecular *** by the imperative of enhancing patient outcomes,a comprehensive numerical simulation study on the dynamics of blood flow in a stenosed artery,focusing on the effects of copper and alumina nanoparticles,is *** study employs a 2-dimensional Newtonian blood flow model infused with copper and alumina nanoparticles,considering the influence of a magnetic field,thermal radiation,and various flow *** governing differential equations are first non-dimensionalized to facilitate analysis and subsequently solved using the 4th order collocation method,bvp4c module in *** approach obtains velocity and temperature profiles,revealing the impact of relevant parameters crucial in the biomedical *** findings of this study underscore the significance of understanding blood flow dynamics in stenosed arteries and the potential benefits of utilizing copper and alumina nanoparticles in treatment *** incorporation of nanoparticles introduces novel avenues for enhancing therapeutic interventions,particularly in mitigating the effects of *** elucidation of velocity and temperature profiles provides valuable insights into the behavior of blood flow under different conditions,thereby informing the development of targeted biomedical *** arterial curvature flow parameter influences temperature profiles,with increased parameters promoting more efficient heat *** elevated values of Prandtl number and thermal radiation parameter showcase the diminished temperature profiles,indicating stronger dominance of momentum diffusion over thermal diffusion and radiative heat transfer *** analysis of the pertinent physical parameters reveals that the Prandtl number has the most significant impact on blood flow dynamics.A statistical analysis of the present results and exist

关键词： Blood flow simulation stenosis copper and alumina nanoparticles thermal radiation curvature parameter

[Skin mechanomedicine]

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Zhonghua yi xue za zhi 2025年第7期105卷 489-496页

作者： S M Geng j H Hu Q Zhao Y Q feng X Wang H Liu f Xu Department of Dermatology Second Affiliated Hospital of Xi'an Jiaotong University Xi'an 710004 China Center for Dermatology Disease Precision Medical Institute Xi'an 710115 China. Bioinspired Engineering and Biomechanics Center (BEBC) School of Life Science and Technology Xi'an Jiaotong University Xi'an 710049 China Ministry of Education Key Laboratory of Biomedical Information Engineering School of Life Science and Technology Xi'an Jiaotong University Xi'an 710049 China.

Traditional research on skin diseases has mainly focused on biological characteristics for a long time. Recently, the integration of biomechanics and mechanobiology has introduced mechanical factors into skin disease research. The interaction between mechanical factors and skin's physiological and pathological changes has gradually been transformed in clinical diagnosis and treatment. The two emerging fields, mechanodiagnostics and mechanotherapy, have been developed to address clinical needs. However, clinicians often lack a comprehensive understanding of skin mechanical characteristics and the mechanobiological mechanisms in dermatology. Thus, we propose the concept of "skin mechanomedicine". By summarizing relevant research at home and abroad, this paper systematically elucidates the multiscale mechanical characteristics of skin diseases and their impact on biological behavior from four perspectives: skin biomechanics, skin mechanobiology, skin mechanodiagnostics, and skin mechanotherapy. Meanwhile, in-depth exploration was conducted on the potential application of mechanical factors in the diagnosis and treatment of skin diseases, aiming to provide new research perspectives and solutions for the diagnosis and treatment of skin diseases.

关键词：皮肤皮肤生物力学皮肤力生物学皮肤力诊断学皮肤力治疗学

Deep view of composite SNR CTA1 with LHAASO in γ-rays up to 300 TeV

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Science China(Physics,Mechanics & Astronomy) 2025年

作者： Zhen Cao f.Aharonian Axikegu Y.X.Bai Y.W.Bao D.Bastieri X.j.Bi Y.j.Bi W.Bian A.V.Bukevich Q.Cao W.Y.Cao Zhe Cao j.Chang j.f.Chang A.M.Chen E.S.Chen H.X.Chen Liang Chen Lin Chen Long Chen M.j.Chen M.L.Chen Q.H.Chen S.Chen S.H.Chen S.Z.Chen T.L.Chen Y.Chen N.Cheng Y.D.Cheng M.C.Chu M.Y.Cui S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluobu X.Q.Dong K.K.Duan j.H.fan Y.Z.fan j.fang j.H.fang K.fang C.f.feng H.feng L.feng S.H.feng X.T.feng Y.feng Y.L.feng S.Gabici B.Gao C.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge T.T.Ge L.S.Geng G.Giacinti G.H.Gong Q.B.Gou M.H.Gu f.L.Guo j.Guo X.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han O.A.Hannuksela M.Hasan H.H.He H.N.He j.Y.He Y.He Y.K.Hor B.W.Hou C.Hou X.Hou H.B.Hu Q.Hu S.C.Hu C.Huang D.H.Huang T.Q.Huang W.j.Huang X.T.Huang X.Y.Huang Y.Huang Y.Y.Huang X.L.ji H.Y.jia K.jia H.B.jiang K.jiang X.W.jiang Z.j.jiang M.jin M.M.Kang I.Karpikov D.Khangulyan D.Kuleshov K.Kurinov B.B.Li C.M.Li Cheng Li Cong Li D.Li f.Li H.B.Li H.C.Li jian Li jie Li K.Li S.D.Li W.L.Li W.L.Li X.R.Li Xin Li Y.Z.Li Zhe Li Zhuo Li E.W.Liang Y.f.Liang S.j.Lin B.Liu C.Liu D.Liu D.B.Liu H.Liu H.D.Liu j.Liu j.L.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma X.H.Ma j.R.Mao Z.Min W.Mitthumsiri H.j.Mu Y.C.Nan A.Neronov K.C.Y.Ng L.j.Ou P.Pattarakijwanich Z.Y.Pei j.C.Qi M.Y.Qi B.Q.Qiao j.j.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shchegolev X.D.Sheng f.W.Shu H.C.Song Yu.V.Stenkin V.Stepanov Y.Su D.X.Sun Q.N.Sun X.N.Sun Z.B.Sun j.Takata P.H.T.Tam Q.W.Tang R.Tang Z.B.Tang W.W.Tian L.H.Wan C.Wang C.B.Wang G.W.Wang H.G.Wang H.H.Wang j.C.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.H.Wang R.Wang W.Wang X.G.Wang X.Y.Wang Y.Wang Y.D.Wang Y.j.Wang Z.H.Wang Z.X.Wang Zhen Wang Zheng Wang D.M.Wei j.j.Wei Y.j.Wei T.Wen C.Y.Wu H.R.Wu Q.W.Wu S.Wu X.f.Wu Y.S.Wu S.Q.Xi j.Xia G.M.Xiang D.X.Xiao G.Xiao Y.L.Xin Y.Xing D.R.Xiong Z.Xiong D.L.Xu R.f.Xu R.X.Xu W.L.Xu L.Xue D.H.Yan j.Z.Yan T.Yan C.W.Yang C.Y.Yang f.Yang f.f.Yang L.L.Yang M.j.Yang R.Z.Yang W.X.Yang Y.H.Yao Z.G.Yao L.Q.Yin N.Yin X.H.You Z.Y.You Y.H Southwest jiaotong University School of Astronomy and Space Science Nanjing University Center for Astrophysics Guangzhou University Tsung-Dao Lee Institute & School of Physics and Astronomy Shanghai jiao Tong University Institute for Nuclear Research of Russian Academy of Sciences Hebei Normal University University of Science and Technology of China LHAASO Collaboration State Key Laboratory of Particle Detection and Electronics Key Laboratory of Dark Matter and Space Astronomy & Key Laboratory of Radio Astronomy Purple Mountain Observatory Chinese Academy of Sciences Research Center for Astronomical Computing Zhejiang Laboratory Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences School of Physics and Astronomy Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center Yunnan University Key Laboratory of Cosmic Rays (Tibet University) Ministry of Education Department of Physics The Chinese University of Hong Kong Key Laboratory of Radio Astronomy and Technology National Astronomical Observatories Chinese Academy of Sciences School of Physics and Astronomy (Zhuhai) & School of Physics (Guangzhou) & Sino-french Institute of Nuclear Engineering and Technology (Zhuhai) Sun Yat-sen University Institute of High Energy Physics Institute of frontier and Interdisciplinary Science Shandong University APC Université Paris Cité CNRS/IN2P3 CEA/IRfU Observatoire de Paris Department of Engineering Physics & Department of Astronomy Tsinghua University School of Physics and Microelectronics Chinese Academy of Sciences Zhengzhou University Yunnan Observatories Chinese Academy of Sciences China Center of Advanced Science and Technology College of Physics Sichuan University School of Physics Peking University Guangxi Key Laboratory for Relativistic Astrophysics School of Physical Science and Technology University of Chinese Academy of Sciences Guangxi University Department of Physics faculty of Science Mahidol University Moscow Institute

The ultra-high-energy（UHE） gamma-ray source 1LHAASO j0007+7303u is positionally associated with the composite SNR CTA1 that is located at high Galactic Latitude b ≈ 10.5°. This provides a rare opportunity to spatially resolve the component of the pulsar wind nebula（PWN） and supernova remnant（SNR） at UHE. This paper conducted a dedicated data analysis of 1LHAASO j0007+7303u using the data collected from December 2019 to july 2023. This source is well detected with significances of 21σ and 17σ at 8-100 TeV and >100 TeV, respectively. The corresponding extensions are determined to be 0.23°±0.03°and 0.17°±0.03°. The emission is proposed to originate from the relativistic electrons accelerated within the PWN of PSR j0007+7303. The energy spectrum is well described by a power-law with an exponential cutoff function dN/dE =（42.4 ± 4.1）(E/（20 TeV）)-2.31±0.11exp(-E/（110±25 TeV）) TeV-1cm-2s-1in the energy range from 8 to 300 TeV, implying a steady-state parent electron spectrum dNe/dEe∝(Ee/（100 TeV）)-3.13±0.16exp[(-Ee/（373±70 TeV）)2] at energies above ≈ 50 TeV. The cutoff energy of the electron spectrum is roughly equal to the expected current maximum energy of particles accelerated at the PWN terminal shock. Combining the X-ray and gamma-ray emission, the current space-averaged magnetic field can be limited to≈ 4.5 μG. To satisfy the multi-wavelength spectrum and the γ-ray extensions, the transport of relativistic particles within the PWN is likely dominated by the advection process under the free-expansion phase assumption.

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Iron-promoted zirconia-alumina supported Ni catalyst for highly efficient and cost-effective hydrogen production via dry reforming of methane

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journal of Environmental Sciences 2025年第2期148卷 274-282页

作者： Ahmed S.Al-fatesh Naitik Patel Vijay Kumar Srivastava Ahmed I.Osman David W.Rooney Anis H.fakeeha Ahmed E.Abasaeed Mohammed f.Alotibi Rawesh Kumar Chemical Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia Department of Chemistry Indus UniversityAhmedabadGujarat 382115India School of Chemistry and Chemical Engineering Queen’s University BelfastBelfast BT95AGNorthern IrelandUK Institute of Refining and Petrochemicals Technologies King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Kingdom of Saudi Arabia

Developing cost-effective and high-performance catalyst systems for dry reforming of methane(DRM)is crucial for producing hydrogen(H_(2))***,we investigate using iron(fe)as a promoter and major alumina support in Ni-based catalysts to improve their DRM *** addition of iron as a promotor was found to add reducible iron species along with reducible NiO species,enhance the basicity and induce the deposition of oxidizable *** incorporating 1 wt.%fe into a 5Ni/10ZrAl catalyst,a higher CO_(2) interaction and formation of reducible"NiO-species having strong interaction with support"was observed,which led to an∼80%H_(2) yield in 420 min of Time on Stream(TOS).further increasing the fe content to 2 wt.%led to the formation of additional reducible iron oxide species and a noticeable rise in H_(2) yield up to 84%.Despite the severe weight loss on fe-promoted catalysts,high H_(2) yield was maintained due to the proper balance between the rate of CH_(4) decomposition and the rate of carbon deposit ***,incorporating 3 wt.%fe into the 5Ni/10ZrAl catalyst resulted in the highest CO_(2) interaction,wide presence of reducible NiO-species,minimumgraphitic deposit and an 87%H_(2) *** findings suggest that ironpromoted zirconia-alumina-supported Ni catalysts can be a cheap and excellent catalytic system for H_(2) production via DRM.

关键词： Dry reforming of methane Coke resistant Hydrogen production Cheap catalyst fe-promoted catalyst