A5056940638- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Magnetic properties of thin films
- Ionosphere and magnetosphere dynamics
- Theoretical and Computational Physics
- Atmospheric and Environmental Gas Dynamics
- Silicon Carbide Semiconductor Technologies
- Iron-based superconductors research
- Oil Spill Detection and Mitigation
- Water Quality Monitoring and Analysis
- Air Quality Monitoring and Forecasting
- Superconductivity in MgB2 and Alloys
- Shape Memory Alloy Transformations
- Multiferroics and related materials
- High-pressure geophysics and materials
- Advancements in Semiconductor Devices and Circuit Design
- Medical Imaging Techniques and Applications
- Solar and Space Plasma Dynamics
- Advanced Thermodynamics and Statistical Mechanics
- Rare-earth and actinide compounds
- Advanced X-ray and CT Imaging
- Hydraulic Fracturing and Reservoir Analysis
University of California, Davis
1991-2025
Beijing University of Technology
2009-2024
Norwegian University of Science and Technology
2024
University College London
2024
The Francis Crick Institute
2024
National Yang Ming Chiao Tung University
2024
Dalian Ocean University
2023
Br. Birkeland (Norway)
2023
Dalian Maritime University
2021-2022
China Earthquake Administration
2022
To investigate the observed huge variations in magnetoresistance between different samples of manganite perovskites we have performed first high-pressure measurement single crystal ${\mathrm{Nd}}_{0.5}{\mathrm{Sr}}_{0.36}{\mathrm{Pb}}_{0.14}{\mathrm{MnO}}_{3\ensuremath{-}\ensuremath{\delta}}$. Both resistivity and are strongly suppressed upon application pressure. The decrease with increasing pressure rules out substrate-induced compressive strain as a source enhanced magnetoresistance....
The specific heat of the colossal magnetoresistance material ${\mathrm{Nd}}_{0.67}{\mathrm{Sr}}_{0.33}{\mathrm{MnO}}_{3}$ is reported for $0.35<~T<~280\mathrm{K},$ $H=0$ and $1<~T<~120\mathrm{K},$ $H=9\mathrm{T}.$ results include a Schottky-like specific-heat anomaly Nd ordering, an ``attenuation'' Mn ordering anomaly, T-dependent ``linear term,'' $\ensuremath{\gamma}(T)T.$ This unusual combination features interpreted as arising from interaction between spin systems. expected...
Parenting styles (PSs) have been a widely discussed topic in psychological research. The studies shown that PSs influence self-esteem (SE), resilience, and academic performance (AP) different ways. SE, AP are key factors individual development, playing an important role promoting mental health enhancing the ability to face challenges. SE boosts individuals sense of self-worth, resilience aids overcoming difficulties, good lays foundation for future personal professional growth. However,...
This work explores the biomechanical characteristics of key actions in fencing techniques using motion capture and analysis technology, aiming to provide scientific evidence for athlete training performance. The combines eight infrared high-speed cameras with Delsys surface Electromyography system synchronized analysis, making an innovative contribution research techniques. technological combination allows more precise tracking athlete’s three-dimensional movement trajectories muscle...
X-ray microtomography is a powerful non-destructive technique allowing 3D virtual histology of resected human tissue. The achievable imaging field-of-view, however limited by the fixed number detector elements, enforcing requirement to sacrifice spatial resolution in order image larger samples. In applications such as soft-tissue imaging, phase-contrast methods are often employed enhance contrast. Some these methods, especially those suited laboratory sources, rely on optical dimensions...
Over the past decades, numerous observations and model studies have provided substantial evidence that space weather, through particle precipitation, affects chemistry dynamics of stratosphere. Concurrently, significance stratospheric dynamics, particularly in winter short-range seasonal forecasts, has been highlighted. However, there little effort to integrate knowledge from these two research fields.&#160;This review aims bridge gap between Space Physics Climate communities. It will...
Magnetotransport measurements of high-quality single crystals ${\mathrm{La}}_{0.6}{\mathrm{Pb}}_{0.4}\mathrm{Mn}{\mathrm{O}}_{3\ensuremath{-}\ensuremath{\delta}}$ and ${\mathrm{Nd}}_{0.6}{({\mathrm{Sr}}_{0.7}{\mathrm{Pb}}_{0.3})}_{0.4}\mathrm{Mn}{\mathrm{O}}_{3\ensuremath{-}\ensuremath{\delta}}$ show a close relationship between giant magnetoresistance the ferromagnetic ordering transition in these materials. In contrast to results for thin film polycrystalline materials, vanishes as...
We report the temperature dependence of magnetization hysteresis loops high-quality ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7}$ single crystals, each with a unique orientation twin boundaries. have observed anisotropy in range 6--77 K for various magnetic fields applied normal to c axis and parallel (stronger pinning) or perpendicular (weaker twin-boundary orientation, thus causing an anisotropic critical current density ${\mathit{J}}_{\mathit{c}}$....
To enhance the accuracy of comprehensive evaluation reservoir quality in shale oil fractured horizontal wells, Pearson correlation analysis method was employed to study correlations between geological parameters and their relationship with production. Through principal component analysis, original factors were linearly combined into components clear specific physical meanings, aiming eliminate among factors. Furthermore, Gaussian membership functions applied delineate fuzzy levels, entropy...
Abstract. In this paper, the latest SCIAMACHY limb ozone scientific vertical profiles, namely current V2.9 and upcoming V3.0, are extensively compared with ozonesonde data from World Ozone Ultraviolet Radiation Data Centre (WOUDC) database. The comparisons made on a global scale 2003 to 2011, involving 61 sonde stations. retrieval processors used generate V3.0 sets briefly introduced. discussed in terms of profiles stratospheric partial columns. Our results indicate that profile between 20...
The identification of oil species and their characteristics in spills is particularly important for efficient disposal. Since aromatic hydrocarbons (AHs) with various are the major fluorescent components oils seawater, they can be used to detect different seawater. Here, we developed a composition method using fluorescence spectra eight AH categories analyzed by gas chromatography-mass spectrometry (GC-MS) evaluate contribution AHs total six species. Qualitative quantitative difference...
We report measurements of upper critical fields ${\mathit{H}}_{\mathit{c}2}$ ${\mathrm{Y}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Pr}}_{\mathit{x}}$${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ single crystals, with x varying from 0 to 0.54. Values were determined resistively. For various Pr concentrations, we find that shows a linear temperature dependence under field up 5 T both parallel and perpendicular the c axis. The...
In this article, the degradation mechanisms of radiation-hardened vertical double-diffused MOSFETs (VD-MOSFET) experiencing gamma ray irradiation and annealing sequentially experiment device simultaneously (Si-ED) are studied compared. Experiments demonstrate that Si-ED irradiated with gate bias (+12 V) has a lower oxide-trapped charges increment ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\Delta...
The study investigated the impact of salinity and pH changes on survival, growth, antioxidant enzyme activity in Mactra chinensis Philippi (1.00 ± 0.10 cm shell length, 0.75±0.04 height), a marine clam species. Juveniles were exposed to various levels (5.4 - 9.6) salinities (5 35 psu) for up 20 days at 19 0.5 ˚C. individual effect juveniles evaluated under 8.0 30 psu, respectively. results indicated that highest survival rates observed (85%, = psu (95%, 8.0). significantly reduced extreme (≤...
We report the resistivity and upper critical field ${\mathit{H}}_{\mathit{c}2}$(T) of ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Fe}}_{\mathit{x}}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathit{y}}$ single crystals. In normal state, no magnetoresistivity is observed within experimental sensitivity in our measurement. The superconducting transition broadened by magnetic field. upper-critical-field slope decreases as iron composition increases. Based on...
Neutron diffraction has been used to study the effects of oxygen on magnetic order rare-earth ions in R${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{6+\mathit{x}}$ (R=Dy, Er, Nd). For fully oxygenated superconducting (${\mathit{T}}_{\mathit{c}}$=92 K) ${\mathrm{ErBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7}$, two-dimensional (2D) short-range correlations are observed just above ordering temperature ${\mathit{T}}_{\mathit{N}}$=0.62 K, while at ${\mathit{T}}_{\mathit{N}}$ long-range...
The magnetic field and the temperature dependence of mixed-state Hall effect have been measured on single crystals in system ${\mathrm{Y}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Pr}}_{\mathit{x}}$${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ (0.0\ensuremath{\le}x\ensuremath{\le}0.3) with perpendicular to ab plane current flowing plane. A sign change resistivity is observed at low Pr concentrations, negative disappearing...
The temperature dependence of the Hall effect was studied on single crystals ${\mathrm{Y}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Pr}}_{\mathit{x}}$${\mathrm{Ba}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{7\mathrm{\ensuremath{-}}\mathrm{\ensuremath{\delta}}}$ with magnetic field perpendicular to ab plane and current flowing in plane. anomaly coefficient at around 120 K found some 1:2:3 compounds is not observed Pr-doped Y-Ba-Cu-O crystals. We that an increase Pr concentration reduces...
Neutron diffraction has been used to study the magnetic fluctuations and long range order of Dy ions in single crystals superconducting DyBa2Cu3O7. The temperature dependence rod scattering, characteristic 2D behavior, measured above below 3D Néel (TN ≂ 0.9 K). This intensity is observed increase as decreases until TN reached, then rapidly TN. correlation length, which obtained from measurements width rod, grows continuously with decreasing temperature, reaches a resolution-limited maximum...
Abstract The secondary ozone layer is a global peak in abundance the upper mesosphere-lower thermosphere (UMLT) around 90-95 km. effect of energetic particle precipitation (EPP) from geomagnetic processes on this UMLT remains largely unexplored. In research we investigated how responds to EPP using satellite observations. addition, residual Mean Meridional Circulation (MMC) derived model simulations and atomic oxygen [O], hydrogen [H], temperature measurements observations were used...