L. Yuan

ORCID: 0000-0002-6719-5397
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About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Dark Matter and Cosmic Phenomena
  • Computational Physics and Python Applications
  • Neutrino Physics Research
  • Cosmology and Gravitation Theories
  • Black Holes and Theoretical Physics
  • Atomic and Subatomic Physics Research
  • Medical Imaging Techniques and Applications
  • Nuclear physics research studies
  • Particle Accelerators and Free-Electron Lasers
  • Astrophysics and Cosmic Phenomena
  • Radiation Detection and Scintillator Technologies
  • Distributed and Parallel Computing Systems
  • advanced mathematical theories
  • Superconducting Materials and Applications
  • Nuclear Physics and Applications
  • Gamma-ray bursts and supernovae
  • Force Microscopy Techniques and Applications
  • Atomic and Molecular Physics
  • Scientific Research and Discoveries
  • Advanced NMR Techniques and Applications
  • Quantum, superfluid, helium dynamics

Beihang University
2009-2025

Institute of High Energy Physics
2011-2024

University of Antwerp
2024

A. Alikhanyan National Laboratory
2022-2024

Institute of High Energy Physics
2018-2024

National University of Defense Technology
2024

Jilin University
2024

University of Chicago
2022-2024

Shanghai University
2024

Xenon Pharmaceuticals (Canada)
2023-2024

Challenges in quantifying how force affects bond formation have hindered the widespread adoption of mechanochemistry. We used parallel tip-based methods to determine reaction rates, activation energies, and volumes force-accelerated [4+2] Diels-Alder cycloadditions between surface-immobilized anthracene four dienophiles that differ electronic steric demand. The rate dependences on pressure were unexpectedly strong, substantial differences observed dienophiles. Multiscale modeling...

10.1126/science.adf5273 article EN Science 2023-06-08

The quasielastic ${(e,e}^{\ensuremath{'}}p)$ reaction was studied on targets of deuterium, carbon, and iron up to a value momentum transfer ${Q}^{2}$ $8.1(\mathrm{GeV}{/c)}^{2}.$ A nuclear transparency determined by comparing the data calculations in plane-wave impulse approximation. dependence mass number investigated search for onset color phenomenon. We find no evidence within our range ${Q}^{2}.$ fit world's reflects energy free-proton--nucleon cross section.

10.1103/physrevc.66.044613 article EN Physical Review C 2002-10-25

We report on the results of E06-014 experiment performed at Jefferson Lab in Hall A, where a precision measurement twist-3 matrix element ${d}_{2}$ neutron (${d}_{2}^{n}$) was conducted. The quantity ${d}_{2}^{n}$ represents average color Lorentz force struck quark experiences deep inelastic electron scattering event off due to its interaction with hadronizing remnants. This determined from linear combination third moments $^{3}\mathrm{He}$ spin structure functions, ${g}_{1}$ and ${g}_{2}$,...

10.1103/physrevd.94.052003 article EN publisher-specific-oa Physical review. D/Physical review. D. 2016-09-06

Van der Waals heterostructures formed by stacked 2D materials show exceptional electronic, mechanical, and optical properties. Superlubricity, a condition where atomically flat, incommensurate planes of atoms result in ultra-low friction, is prime example enabling, for example, self-assembly optically visible graphene nanostructures air via sliding auto-kirigami process. Here, it demonstrated that subtle but ubiquitous adsorbate stripe structure found on graphitic surfaces ambient conditions...

10.1002/smll.202401979 article EN cc-by Small 2024-07-16

A bstract Using a data sample of 980 fb − 1 collected with the Belle detector at KEKB asymmetric-energy e + collider, we study for first time singly Cabibbo-suppressed decays $$ {\Omega}_c^0\to {\Xi}^{-}{\pi}^{+} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>Ω</mml:mi> <mml:mi>c</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:mo>→</mml:mo> <mml:msup> <mml:mi>Ξ</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:mi>π</mml:mi> <mml:mo>+</mml:mo> </mml:math> and Ω K...

10.1007/jhep01(2023)055 article EN cc-by Journal of High Energy Physics 2023-01-12

The contribution of higher harmonics to the movement a micro rectangular cantilever in tapping mode AFM is investigated. dependence between phase lag harmonic components and tip-sample separation are found be an order magnitude than base one, reflecting increasing sensitivity local variations surface properties compared normal signal. strong correlation amplitude average sample deformation implies that can taken monitor force or as feedback variable fulfill constant repulsive mode.

10.1088/0256-307x/26/10/100703 article EN Chinese Physics Letters 2009-09-29

The periodic impact force induced by tip-sample contact in a tapping mode atomic microscope (AFM) gives rise to the non-harmonic response of micro-cantilever. These signals contain full characteristics interaction. A complete theoretical model describing dynamical behaviour tip–sample system was developed this paper. An analytic formula introduced describe relationship between time-varying and tip motion. analysis numerical results both show that can be reconstructed recording This allows...

10.1088/1674-1056/19/5/050701 article EN Chinese Physics B 2010-05-01

We investigated magnetic properties and L10 phase formation of FePt films by rapid thermal annealing (RTA) high current-density ion-beam irradiation. The sample prepared RTA at 550°C has (001) texture strong perpendicular anisotropy with Hc equal to 6kOe. irradiated 5.04μA∕cm2 10kOe but isotropic due the (111) texture. correlation length ion-irradiated was about twice as large that sample. This may be inhomogeneity in film.

10.1063/1.1853018 article EN Journal of Applied Physics 2005-05-09

The Large Hadron Collider at CERN finished the Run 2 data taking by end of 2018. Both ATLAS and CMS experiments have recorded about 140 fb$^{-1}$ proton-proton collision $\sqrt{s}$=13 TeV during this period. Such an enormous amount provide good opportunities for new physics searches Beyond Standard Model (BSM). New phenomena except mainstream supersymmetry are usually referred to as exotica. In talk, several analyses exotica searches, based on completed collaborations summer 2019 presented....

10.22323/1.376.0051 article EN cc-by-nc-nd Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021) 2020-08-18

The CMS experiment at the Large Hadron Collider (LHC) has recorded about 140 fb$^{-1}$ of proton-proton collision data $\sqrt s$ = 13 TeV during Run 2 taking period. Such an enormous amount provide good oppotunities for Higgs boson properties measurements. In this talk, measurements mass, width, CP and anomalous couplings conducted by are presented. No significant deviation from Standard Model prediction is observed.

10.22323/1.450.0187 article EN cc-by-nc-nd 2024-01-15

Recent advances in Text-to-Video generation (T2V) have achieved remarkable success synthesizing high-quality general videos from textual descriptions. A largely overlooked problem T2V is that existing models not adequately encoded physical knowledge of the real world, thus generated tend to limited motion and poor variations. In this paper, we propose \textbf{MagicTime}, a metamorphic time-lapse video model, which learns real-world physics implements generation. First, design MagicAdapter...

10.48550/arxiv.2404.05014 preprint EN arXiv (Cornell University) 2024-04-07

To evaluate the clinical value of rehabilitation nursing following internal fixation distal radius fractures (DRFs).

10.62347/moli6474 article EN American Journal of Translational Research 2024-01-01

In view of the low efficiency and slow development fruit vegetable picking in China, sequence obstacle avoidance clustered crabapples were studied with them as target. The multi-objective was planned, adaptive pheromone factor, heuristic function, volatile factor used to improve ant colony (ACO) algorithm, so convergence speed, adaptability, global search ability algorithm. order avoid collision between robotic arm branches tree, three-dimensional reconstruction tree carried out, shape...

10.20944/preprints202412.2306.v1 preprint EN 2024-12-27

…are often invoked as catalytically competent intermediates in oxidative crosscouplings.T his Cover illustrates how two asteroids (CF 3 &Fligands) collide with Venus,traditionally associated to copper, assembling the organocopper(III) fluoride,[ Cu(CF ) F] À (2), which is depicted on surface of planet.In their Communication (e202319412), Julia Contreras-García, Noel Nebra et al. demonstrate key role 2 C-CF bond formation occurring through a2 e redox shuttle.Graphic design by Pablo...

10.1002/ange.202481111 article EN Angewandte Chemie 2024-03-03

The selection and design of electrodes with different geometry shapes for electropolymerization is a challenge, especially considering the electric field required homogeneity polymers. This paper carried out COMSOL simulation analysis an generated by three electrodes. In addition, model electrode established. calculation based on finite element boundary analysis. non-uniformity sorted, lowest selected experiment. Finally, basis reasonable simulation, correspondence between intensity value...

10.1117/12.3014889 article EN 2024-03-04

We present Envision3D, a novel method for efficiently generating high-quality 3D content from single image. Recent methods that extract multi-view images generated by diffusion models show great potential. However, it is still challenging to generate dense consistent images, which crucial the quality of extraction. To address this issue, we propose cascade framework, decomposes views generation task into two tractable stages, namely anchor and interpolation. In first stage, train image model...

10.48550/arxiv.2403.08902 preprint EN arXiv (Cornell University) 2024-03-13

Carboxylic acids are considered to be the most ideal acylating reagents for Friedel-Crafts acylation. However, low electrophilicity of carboxylic and ability their byproduct water deactivate Lewis Brønsted greatly limit application in this reaction. In work, we developed a general regioselective acylation with acids, wherein unactivated/activated arenes various aromatic aliphatic were viable starting materials. Key accomplishment is use trifluoromethanesulfonic acid-hexafluoroisopropanol clusters.

10.1021/acs.joc.4c02020 article EN The Journal of Organic Chemistry 2024-11-10

UDP (User Datagram Protocol) that widely used in streaming media transmission lacks of effective congestion control mechanisms, which affects performance. In this paper, a Route Queue Management based end-to-end scheme-MDCC (Mixed-Driven Congestion Control) is proposed. MDCC uses ARIO-C middle node router and improved TFRC-based algorithm adjusted to work with ARIO-C. The simulation results show efficient improving performance transmission.

10.1109/icnds.2010.5479304 article EN 2010-05-01

A review on the property measurements of Higgs boson is presented in this report, especially using bosonic decay channels from both ATLAS and CMS experiments at Large Hadron Collider.The results include mass, spin/CP, couplings as well fiducial differential cross section measurements.

10.22323/1.234.0172 article EN cc-by-nc-nd Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021) 2016-03-16
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