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All-Optical Temporal Differentiator Using a High Resolution Optical Arbitrary Waveform Shaper

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Chinese Physics Letters 2012年第1期29卷 120-122页

作者： DONG Jian-Ji LUO Bo-wen ZHANG Yin lei lei HUANG de-Xiu ZHANG Xin-Liang Wuhan National Laboratory for Optoelectronics College of Optoelectronic Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074

We experimentally demonstrate an all-optical temporal differentiator using a high resolution optical arbitrary waveform shaper,which is based on liquid crystal on silicon switching elements,and both amplitude and phase of the spectrum are *** designing specific transfer functions with the optical waveform shaper,we obtain first-,second-,and third-order differentiators for periodic pulses with small average *** also theoretically analyze the bandwidth limitation of optical waveform shaper on the differentiator.

关键词： optical Optical designing

Perilipin-2 mediates ferroptosis in oligodendrocyte progenitor cells and myelin injury after ischemic stroke

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Neural Regeneration Research 2025年第7期20卷 2015-2028页

作者： Jian Yang Jiang Wu Xueshun Xie Pengfei Xia Jinxin Lu Jiale Liu lei Bai Xiang Li Zhengquan Yu Haiying Li department of Neurosurgery&Brain and Nerve Research Laboratory The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Stroke Research Soochow UniversitySuzhouJiangsu ProvinceChina

Differentiation of oligodendrocyte progenitor cells into mature myelin-forming oligodendrocytes contributes to *** of remyelination due to oligodendrocyte progenitor cell death can result in severe nerve *** is an iron-dependent form of regulated cell death caused by membrane rupture induced by lipid peroxidation,and plays an important role in the pathological process of ischemic ***,there are few studies on oligodendrocyte progenitor cell *** analyzed transcriptome sequencing data from GEO databases and identified a role of ferroptosis in oligodendrocyte progenitor cell death and myelin injury after cerebral *** analysis suggested that perilipin-2(PLIN2)was involved in oligodendrocyte progenitor cell ***2 is a lipid storage protein and a marker of hypoxia-sensitive lipid droplet *** further investigation,we established a mouse model of cerebral ischemia/*** found significant myelin damage after cerebral ischemia,as well as oligodendrocyte progenitor cell death and increased lipid peroxidation levels around the infarct *** ferroptosis inhibitor,ferrostatin-1,rescued oligodendrocyte progenitor cell death and subsequent myelin *** also found increased PLIN2 levels in the peri-infarct area that co-localized with oligodendrocyte progenitor ***2 knockdown rescued demyelination and improved neurological *** findings suggest that targeting PLIN2 to regulate oligodendrocyte progenitor cell ferroptosis may be a potential therapeutic strategy for rescuing myelin damage after cerebral ischemia.

关键词： bioinformatics bulk RNA sequencing ferroptosis ischemic stroke myelin injury oligodendrocyte progenitor cell perilipin-2 single-cell RNA sequencing

Friedel-Crafts alkylation of indoles with nitroalkenes catalyzed by Cu(Ⅱ)-imine complex

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Chinese Chemical Letters 2011年第10期22卷 1155-1158页

作者： Ning Ning Wan Yong lei Yang wen Ping Wang Zheng Feng Xie Ji de Wang College of Chemistry and Chemical Engineering Xinjiang University Urumqi 830046 China Key Laboratory of Oil ＆ Gas Fine Chemicals of Ministry of Education Xinjiang University Urumqi 830046 China

A series of new ligands L_1-L_7 were readily prepared in one ***-Crafts alkylation of indoles with nitroalkenes catalyzed by a novel Cu（Ⅱ）-L complex has been *** remarkable advantages of this reaction are mild reac... 详细信息

关键词： Friedel-Crafts alkylation Indole Nitroalkene Copper Imine

Numerical Research on the Cold Start-up Strategy of a PEMFC Stack from-30℃

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Journal of Thermal Science 2023年第3期32卷 898-910页

作者： lei Le HE Pu HE Peng TAO wen-quan Shaanxi Collaborative Innovation Center for PEMFC Performance Improvement Key Laboratory of Thermal Fluid Science and Engineering of MOESchool of Energy and Power EngineeringXi’an Jiaotong UniversityXi'an 710049China

The cold start-up of the PEMFC(proton exchange membrane fuel cell)stack from sub-zero temperature is considered one of the significant obstacles to its expansive commercial *** the cold start-up process,with the progress of hydrogen/oxygen chemical reaction,the produced water will freeze into ice,occupying the pores of the porous electrode,thus leading to a rapid deterioration of output performance and even making the cold start-up *** this work,a one-dimensional numerical model is adopted to study a cold start-up process of the PMEFC stack starting from-30℃.The stepwise-changed current loading mode is employed in the *** assisted preheating method is used to explore an optimal operating condition for a successful cold *** numerical results are validated by comparing the numerical result with the experimental data in reference,and they agree with the experimental data very *** results show that the optimal heating power in the studied range is 100 *** the initial current slope increased,the current peak value increased,but the cold start-up process ***,the start-up time and ice volume fraction are highly dependent on the initial current *** optimal initial current slope is 0.7 A/***,a higher initial current slope will cause a significant inner ohmic *** resistance of CLa(catalyst layer of the anode)is the key and primary part of the total ohmic *** details of the research and the analyzed results will help design the cold start-up strategy for the PEMFC stack start-up from-30℃.

关键词： cold start-up IPEMFCstack stepwise-changed current loading mode preheating

Synthesis of bis(indolyl) methanes catalyzed by Schiff base-Cu(Ⅱ) complex

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Chinese Chemical Letters 2011年第9期22卷 1071-1074页

作者： Yong lei Yang Ning Ning Wan wen Ping Wang Zheng Feng Xie Ji de Wang College of Chemistry and Chemical Engineering Xinjiang University Urumqi 830046 China Key Laboratory of Oil & Gas Fine Chemicals of Education of Ministry Xinjiang University Urumqi 830046 China

Schiff base-Cu（II） complex is found to be an effective catalyst for the condensation reaction of indole with aldehydes using ethanol as the solvent. The characterization of the catalysts was carried out using XRD an... 详细信息

关键词： Schiff base complex Bis(indolyl) methanes Indole Aldehydes

Is the W-boson mass enhanced by the axion-like particle,dark photon,or chameleon dark energy?

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Science China(Physics,Mechanics & Astronomy) 2022年第12期65卷 145-152页

作者： Guan-wen Yuan lei Zu lei Feng Yi-Fu Cai Yi-Zhong Fan Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing210023China School of Astronomy and Space Science University of Science and Technology of ChinaHefei230026China department of Astronomy School of Physical SciencesUniversity of Science and Technology of ChinaHefei230026China CAS Key Laboratory for Researches in Galaxies and Cosmology University of Science and Technology of ChinaHefei230026China

The W-boson mass(m W=(80.4335±0.0094)Ge V)measured by the Collider detector at Fermilab Collaboration is greater than the standard model(SM)prediction at a confidence level of 7σ,strongly suggesting the presence of new particles or *** the literature,various new particles and/or fields have been introduced to explain the astrophysical and experimental data,and their presence,in principle,may also enhance the W-boson *** this study,we investigate axion-like particle(ALP),dark photon(DP),and chameleon dark energy(de)models for a solution to the W-boson mass *** find that the ALP and DP interpretations have been significantly narrowed down by global electroweak *** possibility of attributing the W-boson mass anomaly to the chameleon de is ruled out by other experiments.

关键词： W-boson mass axion-like particle dark photon chameleon dark energy

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Hierarchical and probabilistic quantum information splitting of an arbitrary two-qubit state via two cluster states

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Chinese Physics B 2018年第11期27卷 382-389页

作者： wen-Ming Guo lei-Ru Qin School of Software Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

Based on non-maximally entangled four-particle cluster states, we propose a new hierarchical information splitting protocol to probabilistically realize the quantum state sharing of an arbitrary unknown two-qubit state. In this scheme, the sender transmits the two-qubit secret state to three agents who are divided into two grades with two Bell-state measurements,and broadcasts the measurement results via a classical channel. One agent is in the upper grade and two agents are in the lower grade. The agent in the upper grade only needs to cooperate with one of the other two agents to recover the secret state but both of the agents in the lower grade need help from all of the agents. Every agent who wants to recover the secret state needs to introduce two ancillary qubits and performs a positive operator-valued measurement（POVM） instead of the usual projective measurement. Moreover, due to the symmetry of the cluster state, we extend this protocol to multiparty agents.

关键词： cluster state hierarchical quantum information splitting positive operator-valued measurement (POVM)

Quantum to Classical Transition in a System of Two Coupled Kicked Rotors

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Communications in Theoretical Physics 2009年第3期51卷 465-469页

作者： ZHAO wen-lei JIE Quan-Lin department of Physics Wuhan University Wuhan 430072 China

We investigate the quantum-classical transition in a system of two coupled kicked rotors. We lind that when the mass of one kicked rotor is much smaller than the other＇s, the influence of the light kicked rotor is still able to make decoherence of the heavy one. This leads to the quantum-classical transition of the heavy kicked rotor. We demonstrate this by two different coupling potentials.

关键词： quantum chaos quantum-classical transition entanglement kicked rotor

Discrete Numerical Study on Type II Fracture of Partially detached Concrete Panels in Cold Region

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Structural Durability & Health Monitoring 2025年第1期19卷 167-191页

作者： Huayi Zhang Maobin Song lei Shen Nizar Faisal Alkayem Maosen Cao College of Water Conservancy and Hydropower Engineering Hohai UniversityNanjing210024China Haihe River Huaihe River and Xiaoqinghe River Basin Water Conservancy Management and Service Center of Shandong ProvinceJinan250100China College of Mechanics and Engineering Science Hohai UniversityNanjing211100China

When the upper chord beam of the beam-string structure(BSS)is made of concrete-ﬁlled steel tube(CFST),its overall stiffness will change greatly with the construction of concrete placement,which will have an impact on the design of the tensioning plans and selection of control measures for the *** order to accurately obtain the bending stiffness of CFST beam and clarify its impact on the mechanical properties of composite BSS during con-struction,the inﬂuence of some factors such as height-width ratio,wall thickness of steel tube,elasticity modulus of concrete,and friction coefﬁcient on the bending stiffness are analyzed parametrically by the numerical simula-tion technology based on an actual *** calculation formula of the equivalent bending stiffness of CFST is also established through mathematical statistical ***,the equivalent bending stiffness is introduced into the construction and use stages of the composite BSS,respectively,and the mechanical properties such as prestress-tensioning control value,structural deformation,and internal force of key members are comparatively analyzed when adopting two different construction ***,the optimal construction plan of concrete placementﬁrst and then prestress-tensioning is proposed.

关键词： Beam-string structure(BSS) concrete-ﬁlled steel tube(CFST) bending stiffness timing of concrete placement prestress-tensioning