L.L. Ma

ORCID: 0009-0004-5695-8274
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About
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Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Hydrology and Watershed Management Studies
  • Neutrino Physics Research
  • Dark Matter and Cosmic Phenomena
  • Black Holes and Theoretical Physics
  • Nuclear physics research studies
  • Cryospheric studies and observations
  • Soil erosion and sediment transport
  • Computational Physics and Python Applications
  • Plant Water Relations and Carbon Dynamics
  • biodegradable polymer synthesis and properties
  • Geochemistry and Geologic Mapping
  • Energetic Materials and Combustion
  • High-pressure geophysics and materials
  • Metal Alloys Wear and Properties
  • Advanced Algorithms and Applications
  • Atomic and Subatomic Physics Research
  • Plant Pathogens and Fungal Diseases
  • Crystallography and molecular interactions
  • Enzyme Catalysis and Immobilization
  • Fiber-reinforced polymer composites
  • Soil Carbon and Nitrogen Dynamics

Fudan University
2024-2025

Ningxia Medical University
2024-2025

Jiangsu University
2025

Inner Mongolia Agricultural University
2012-2024

Institute of Modern Physics
2023-2024

Chinese Academy of Sciences
2012-2024

University of Chinese Academy of Sciences
2024

Shenyang Jianzhu University
2024

China Institute of Finance and Capital Markets
2024

Beihang University
2024

In this paper, we propose a discriminative low-rank dictionary learning algorithm for sparse representation. Sparse representation seeks the sparsest coefficients to represent test signal as linear combination of bases in an over-complete dictionary. Motivated by matrix recovery and completion, assume that data from same pattern are linearly correlated, if stack these points column vectors dictionary, then should be approximately low-rank. An objective function with coefficients, class...

10.1109/cvpr.2012.6247977 article EN 2009 IEEE Conference on Computer Vision and Pattern Recognition 2012-06-01

This study focuses on the development and evaluation of nanostructured lipid carriers (NLCs) loaded with aloperine as a potential therapeutic approach for treatment pulmonary arterial hypertension. The NLCs were designed to enhance solubility, stability, bioavailability aloperine, compound vasodilatory anti-inflammatory properties. Through series experiments including single-factor experimentation, transmission electron microscopy, high-performance liquid chromatography, in vivo...

10.2147/ijn.s489133 article EN cc-by-nc International Journal of Nanomedicine 2025-01-01

Abstract The Insulated Gate Bipolar Transistor (IGBT) is a crucial component in inverter systems, and accurately modeling the IGBT Controller Hardware-in-the-Loop (CHIL) simulation of inverters key challenge. Based on an electrical model IGBT, this paper develops electro-thermal coupling for suitable (HIL) simulation. An loss established, junction temperature calculations are performed. For specific Infineon model, results obtained from Infineon’s IPOSIM online platform compared with offline...

10.1088/1742-6596/2963/1/012012 article EN Journal of Physics Conference Series 2025-02-01

Abstract The distribution of nuclei produced in the $^{40}$Ar + $^{232}$Th reaction has been studied at gas-filled recoil separator (SHANS2) China Accelerator Facility for Superheavy Elements (CAFE2). bombardment was carried out a beam energy 205 MeV and with detection system installed focal plane. Forty-four isotopes heavier than $^{208}$Pb were observed. These identified as transfer (or target-like) products, their relative cross sections extracted. Based on mass these we exclude...

10.1088/1674-1137/adcb96 article EN Chinese Physics C 2025-04-11

The double-ring infiltrometer is widely used to measure soil unsaturated hydraulic conductivity in the field. scale effect of inner and outer ring size (especially one) affects measurement results. In semi-arid steppe, where water scarce transportation inadequate, studying caused by inner-ring diameter can reduce test consumption on premise ensuring accuracy. this paper, a total 190 infiltration tests with different diameters (15, 20, 25, 30, 40 cm) 0.33 times buffer index were carried out...

10.3390/w11071457 article EN Water 2019-07-14

Polyhydroxyalkanoates (PHA) terployesters P(3HB-co-3HV-co-3HHx) consisting of 3-hydroxybutyrate (3HB), 3-hydroxyvalerate (3HV), and 3-hydroxyhexanoate (3HHx) were produced by wild-type Aeromonas hydrophila 4AK4, its recombinant harboring PHA synthesis genes phaPCJ encoding binding protein phasin, synthase, enoyl-CoA hydratase, another phaAB beta-ketothiolase acetoacetyl-CoA reductase, respectively, when grown in lauric acid and/or valerate. The terpolyesters A. 4AK4 (phaAB) velarate found to...

10.1002/bit.22409 article EN Biotechnology and Bioengineering 2009-05-28

The near-symmetric complete fusion reaction $^{78}\mathrm{Kr}+^{107}\mathrm{Ag}\ensuremath{\rightarrow}^{185}\mathrm{Bi}^{*}$ was studied at the gas-filled recoil separator SHANS with an attempt to synthesize extremely neutron-deficient proton-unbound $^{182,183}\mathrm{Bi}$ isotopes. No decay events which could be attributed them were observed. two- and three-particle evaporation residues $^{180,179}\mathrm{Hg}$ ($\ensuremath{\alpha}p, \ensuremath{\alpha}pn$) $^{183,182}\mathrm{Pb}$ ($pn,...

10.1103/physrevc.110.014326 article EN Physical review. C 2024-07-25

Due to multi-source data information fusion, the precision of eco-hydrology models is improving rapidly. In particular, fractional vegetation coverage (FVC) great significance in remote sensing monitoring surface parameters. this study, downscaling inversion was performed using Normalized Difference Vegetation Index (NDVI) and Ratio (RVI) from Land Remote-Sensing Satellite (System, Landsat-8) RVI-Freeman Radarsat-2 with polarization decomposition, incorporating scattering entropy (H)...

10.1080/01431161.2020.1871093 article EN International Journal of Remote Sensing 2021-02-07

Using a sample of $58\times 10^6$ $J/\psi$ events collected with the BESII detector, radiative decays $J/\psi\to\gamma\gamma V$, where $V=\rho$ or $\phi$, are studied. A resonance around 1420 MeV/c$^2$ (X(1424)) is observed in $\gamma\rho$ mass spectrum. Its and width measured to be $1424\pm 10(stat)\pm 11(sys)$ $ 101.0\pm 8.8 \pm 8.8$ MeV/c$^2$, respectively, its branching ratio $B(J/\psi\to \gamma X(1424)\to \rho)$ determined $(1.07\pm0.17 0.11)\times 10^{-4}$. search for $X(1424)\to...

10.1016/j.physletb.2004.04.085 article EN cc-by Physics Letters B 2004-06-16

Abstract In this article, to explore the utilization of bio‐based epoxy resin in preparation sizing agents for carbon fibers (CFs), a emulsion (S‐P‐S) derived from spiro diacetal (SDE) was prepared and compared traditional diglycidyl ether bisphenol A (DGEBA) based (D‐P‐D) mixed S‐P‐S D‐P‐D (S‐P‐S&D‐P‐D). The CF sized with (CF‐(S‐P‐S)) showed improved surface oxygen content (22.86%) roughness (40.9 nm), enhancing wettability interfacial bonding between fiber matrix. Nanoindentation test...

10.1002/pc.28778 article EN Polymer Composites 2024-07-29

Simulating wind turbine blade icing quickly is important for farms to issue early warnings and effectively deal with the adverse effects of cold weather. However, current numerical simulation methods suffer from high computational costs lack straightforward acceleration techniques practical ice prediction. Here, we developed a fast simple method via an integrated physical statistical analysis method. This consists two steps: firstly, CFD, secondly, table look-up calculations. Over 10,000...

10.3390/en17225785 article EN cc-by Energies 2024-11-20
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