A5111200097- HVDC Systems and Fault Protection
- Physics of Superconductivity and Magnetism
- Space Satellite Systems and Control
- CO2 Reduction Techniques and Catalysts
- Advanced Neural Network Applications
- Water Quality Monitoring and Analysis
- Target Tracking and Data Fusion in Sensor Networks
- Antenna Design and Analysis
- Brain Tumor Detection and Classification
- Crystallization and Solubility Studies
- Superconducting Materials and Applications
- Geology and Paleoclimatology Research
- Astro and Planetary Science
- Inertial Sensor and Navigation
- Advanced Sensor and Control Systems
- X-ray Diffraction in Crystallography
- Infrared Target Detection Methodologies
- Radiomics and Machine Learning in Medical Imaging
- Ionic liquids properties and applications
- Advanced Antenna and Metasurface Technologies
- Frequency Control in Power Systems
- Advanced Image and Video Retrieval Techniques
- Drilling and Well Engineering
- Geomagnetism and Paleomagnetism Studies
- Antenna Design and Optimization
Institute of Agricultural Resources and Regional Planning
2025
Chinese Academy of Agricultural Sciences
2025
Empowerment Program
2024
Xidian University
2024
Nanjing University of Aeronautics and Astronautics
2024
Gannan Normal University
2024
Tsinghua University
2024
Jiangnan University
2014-2024
University of Shanghai for Science and Technology
2006-2024
Nanjing University
2024
Abstract High-precision displacement sensing serves as a cornerstone for measuring numerous physical quantities. Through plasmon-enhanced fluorescence, we propose nitrogen-vacancy (NV)-based highly sensitive and microwave-free distance measurement scheme metal tips with sub-wavelength scale size. The best sensitivity is estimated to be $ 72\ \rm{fm/\sqrt{Hz}}$ high bandwidth of 21 \ \rm{GHz}$ through simulations numerical analyses. study reveals that the sensor performance remains...
Comprehensive and accurate acquisition of surface soil pH spatial distribution information is essential for monitoring degradation providing scientific guidance agricultural practices. This study focused on Heilongjiang Province in China, utilizing data from 125 survey sampling points. Key environmental covariates were identified as modeling inputs through Pearson correlation analysis recursive feature elimination (RFE). Three machine learning models—support vector (SVM), random forest (RF),...
Ghrelin regulates body weight, food intake, and blood glucose. It also insulin secretion from pancreatic islet cells. LEAP2 is a newly discovered endogenous ligand of the growth hormone secretagogue's receptor (GHSR). not only antagonizes stimulation GHSR by ghrelin but inhibits constitutive activation as an inverse agonist. Type 2 diabetes (T2D) patients have endocrine disorders with metabolic imbalance. Plasma levels may be changed in obese T2D patients. However, there no report yet on...
Efficient CO2 electroreduction (CO2RR) to ethanol holds promise generate value‐added chemicals and harness renewable energy simultaneously. Yet, it remains an ongoing challenge due the competition with thermodynamically more preferred ethylene production. Herein, we presented a reduction predilection switch from (ethanol‐to‐ethylene ratio of ~5.4) by inherently implanting Cu sites perfluorooctane create interfacial non‐covalent interactions. The 1.83%F‐Cu2O organic‐inorganic hybrids (OIHs)...
A CuO nanoflower catalyst with tip curvature exhibited remarkable performance toward CO 2 to ethanol conversion. The exceptional selectivity was attributed the enhanced *OH adsorption due tip-curvature-induced local electric fields.
The nonlinear optical properties of bismuth selenium telluride (Bi
Solid Earth tide represents the response of solid to lunar (solar) gravitational force. The yielding due force has been thought be a prolate ellipsoid since time Lord Kelvin, yet ellipsoid's geometry such as major semi-axis's length, minor and flattening remains unresolved. Additionally, tidal displacement reference point is conventionally resolved through combination expanded potential equations given model. Here we present geometric model in which both can rotating ellipse with respect...
古生代陆地植物的起源和繁盛，导致地表水文循环发生了显著变化，对地球表层系统产生了深远的影响。陆地植物一方面通过蒸腾作用增加地表降雨量，加剧了大陆硅酸盐风化作用和有机碳埋藏量；另一方面通过地表径流将陆源营养元素带入海洋，导致海洋初级生产力提高、海水缺氧程度和有机碳埋藏量增加。在晚泥盆世-密西西比亚纪期间，陆地植物和海洋生物礁系统均发生了显著变化，可识别出三个耦合演化阶段：（1）晚泥盆世弗拉期–法门期（Frasnian–Famennian/F–F）转折期植物多样性和覆盖面积明显增加并向高纬度扩张，伴随Kellwasser生物灭绝事件和显生宙最大的层孔海绵–珊瑚礁系统崩溃；（2）泥盆纪–石炭纪（Devonian–Carboniferous/D–C）转折期种子植物多样性显著增加，伴随Hangenberg生物灭绝事件、层孔海绵–珊瑚礁消失、以及密西西比亚纪早期后生动物礁缺失；（3）密西西比亚纪中–晚期（Middle–Late...
Abstract The myocardial single photon emission computed tomography (SPECT) is a good study due to its clinical significance in the diagnosis of disease and requirement for improving image quality. However, SPECT imaging faces challenges related low spatial resolution significant statistical noise, which concerns patient radiation safety. In this paper, novel reconstruction system combining multi-detector elliptical (ME-SPECT) computer (CT) proposed enhance sensitivity. hybrid utilizes...
In this paper, two phase-shift angles plus switching frequency are modulated to control a semi dual-active-bridge resonant converter. The full operation map with distinctive steady-state modes under the multi-dimensional is constructed at first. Based on characteristics of analysis results, modulation strategy zero backflow power proposed depress conduction loss, which able maintain soft-switching as well. Extensive validation through experimental test 500 W lab prototype converter have been...
志留-泥盆纪陆地革命以早期维管植物的起源和辐射演化为标志。早期维管植物的繁盛导致形成全新的土壤-植物-大气连续体（soil-plant-atmosphere continuum；简称SPAC）。早期植物在根系、输导组织、气孔、叶片、个体大小和构型等方面的一系列演化革新，深刻改变了SPAC中的水分传输过程与机制。由于根系的进化及其诱导的化学风化作用增强，泥盆纪以来的古土壤厚度逐渐增大、分层结构复杂化、组成成熟度增加、类型多样化。伴随着早期维管植物的演化，SPAC的空间范围极大扩展，生物可利用水资源增多，水分在SPAC中的循环过程更为复杂、高效。早期维管植物的辐射增强了植被-地貌-水循环之间的反馈机制。志留纪晚期以来，植被与水文、地貌、生物地球化学等物理和化学要素相互作用，维管植物型陆-海水文连续体（land-ocean hydrologic...
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Low-Earth-orbit (LEO) spacecraft are significantly influenced by atmospheric drag. Accurately estimating thermospheric density is pivotal for the precise calculation of drag acceleration. However, along a specific orbit, computed using existing models, has certain inaccuracies. In this work, first-order Gauss–Markov process used to model deviation With Markov parameter initial state iteratively through sequential estimation and smoothing method, derived from high-precision GPS measurements....