A5012297387- Advanced materials and composites
- Advanced ceramic materials synthesis
- MXene and MAX Phase Materials
- Aluminum Alloys Composites Properties
- Advanced Sensor and Energy Harvesting Materials
- Advanced X-ray and CT Imaging
- Metal and Thin Film Mechanics
- Advanced Materials and Mechanics
- Neonatal Respiratory Health Research
- Radiation Dose and Imaging
- Electromagnetic wave absorption materials
- Semiconductor materials and devices
- Surface Modification and Superhydrophobicity
- Respiratory Support and Mechanisms
- Advanced Antenna and Metasurface Technologies
- Dental Implant Techniques and Outcomes
- Diamond and Carbon-based Materials Research
- TiO2 Photocatalysis and Solar Cells
- Aerogels and thermal insulation
- Digital Radiography and Breast Imaging
- Congenital Diaphragmatic Hernia Studies
- Ferroelectric and Negative Capacitance Devices
- Dielectric materials and actuators
- Forest, Soil, and Plant Ecology in China
- Working Capital and Financial Performance
Hubei University of Medicine
2020-2024
Technical Institute of Physics and Chemistry
2021-2024
Aerospace Research Institute of Materials and Processing Technology
2018-2024
Taihe Hospital
2020-2024
China Academy of Launch Vehicle Technology
2023-2024
Chinese Academy of Sciences
2022-2024
University of Chinese Academy of Sciences
2022-2024
Beihang University
2023
Second Hospital of Shandong University
2021-2023
Hebei Medical University
2013-2022
Abstract Multi-component solid solutions with non-stoichiometric compositions are characteristics of ultra-high temperature carbides as promising materials for hypersonic vehicles. However, group IV transition-metal carbides, the oxidation behavior multi-component (Zr,Hf,Ti)C x carbide solution has not been clarified yet. The present work fabricated four kinds powders by free-pressureless spark plasma sintering to investigate in air. effects metallic atom composition on resistance were...
Enhancing the oxidation resistance of multicomponent carbides above 2000℃ is critical for their thermal protection applications. For this purpose, novel Nb- and Ta-doped (Hf,Zr,Ti)C were designed to improve at 2500℃. The results demonstrated that Nb Ta doping reduced rate constant by 16.67% 25.17%, respectively, thereby significantly improving (Hf,Zr,Ti)C. This enhancement was attributed changes in oxycarbide composition distribution within oxide layer adding Ta. Owing different tendencies...
This paper investigates the impact of stock liquidity on firm value in time COVID-19 pandemic. Using data from A-share listed companies China, we calculate Cumulative Abnormal Returns through event study method and by Amihud illiquidity. We find that significant negative relationships between exist first three days outbreak, while positive following days. also these are more severely impacted regions, small companies, non-state-owned enterprises.
A porous Ti3AlC2/SiC gradient composite with highly interconnective pores and variation of the Ti3AlC2 content was prepared by template-replication method. Electromagnetic wave absorption shielding performances as-prepared were investigated waveguide method in range X-band. It reveals that complex permittivity EMW properties increased increasing sintering temperature from 800 to 1000 °C. Meanwhile, rather than SER, SEA contributed effectiveness effectively. The sintered at °C exhibited...
Abstract The establishment of an effective soft-tissue seal is crucial for the long-term stability implant-soft tissue interface. surface properties dental implants play a critical role in modulating early cellular responses, facilitating formation stable seal. This study aims to investigate effects 172 nm vacuum ultraviolet (VUV) chair-side irradiation on physicochemical smooth surfaces zirconia, pure titanium and alloy (Ti6Al4V) implants. Furthermore, it explores how these changes...
Dense HfCxN1−x carbonitride ceramics are very promising as potential ultra-high temperature (UHTCs) for application under extremely harsh environments. However, the thermophysical and mechanical properties of carbonitrides have not been investigated clearly. The present work prepared (x = 0.3, 0.4, 0.5, 0.6, 0.7) at 1950 °C 30 MPa in flowing Ar atmosphere by using hot pressing sintering method. relative densities samples obtained reached above 96%. Thermal conductivity as-prepared ranged...
Barnacle exhibits high adhesion strength underwater for its glue with coupled mechanisms, including hydrogen bonding, electrostatic force, and hydrophobic interaction. Inspired by such mechanism, we designed constructed a phase separation hydrogel induced the bond interaction assembly of PEI PMAA. By coupling effect bond, force interaction, our gel materials show an ultrahigh mechanical strength, which is up to 2.66 ± 0.18 MPa. Also, benefit from forces, as well ability destroy interface...
Abstract In order to increase the oxidation resistance of carbon/carbon (C/C) composites at long‐term high temperature, C/C‐Ultra High Temperature Ceramics (UHTCs) with a dual‐layer UHTCs coating was successfully designed and fabricated. The microstructure ablation were investigated discussed. After in arc‐heated wind tunnel temperature being 2200°C for 1000s, mass rate linear −1.9 × 10 −2 mg/cm 2 s 2.9 −5 mm/s, respectively. formation thermodynamically compatible oxide scale including ZrO...
A novel low-density CBCF composite with an Hf-based coating was designed and prepared, which exhibited a good ablation resistance at the maximum temperature range of 1616–2037 °C for 300 s.
Hf-based carbides are highly desirable candidate materials for oxidizing environments above 2000 °C. However, the static oxidation behavior at their potential service temperatures remains unclear. To fill this gap, of (Hf, Ti)C and effect Ti substitutions were investigated in air 2500 °C under an oxygen partial pressure 4.2 kPa. After s, thickness oxide layer on surface bulk ceramic is reduced by 62.29 % compared with that HfC monocarbide surface. The dramatic improvement resistance...
To develop and validate a radiomics model using computed tomography (CT) images acquired from the first diagnosis to estimate status of occult brain metastases (BM) in patients with stage IV lung adenocarcinoma (LADC).One hundred ninety-three who were diagnosed LADC enrolled divided into training cohort (n=135) validation (n=58). Then, 725 radiomic features extracted contoured primary tumor volumes LADCs. Intra- interobserver reliabilities calculated, least absolute shrinkage selection...
To evaluate image quality of deep learning-based reconstruction (DLIR) in contrast-enhanced renal and adrenal computed tomography (CT) compared with adaptive statistical iterative reconstruction-Veo (ASiR-V).We prospectively recruited 52 patients. All images were reconstructed ASiR-V 30%, 70%, DLIR at low, medium, high strengths. CT number, noise, noise reduction rate, signal-to-noise ratio (SNR), contrast-to-noise (CNR) measured calculated within the region interest (ROI) on subcutaneous...
Numerous computed tomography (CT) image reconstruction algorithms have been developed to improve quality, and high-quality renal CT images are crucial clinical diagnosis. This study evaluated the quality lesion visibility of deep learning-based (DLIR) compared with adaptive statistical iterative reconstruction-Veo (ASiR-V) in contrast-enhanced at different strengths doses.From January 2020 May 2021, we prospectively included 101 patients who underwent scanning (69 120 kV; 32 80 kV). All data...
Via constructing hydrophilic polymer–metal binary cooperative LM-philic networks, LM-Gel with high conductivity and remolding properties was prepared.
To assess clinical application of applying deep learning image reconstruction (DLIR) algorithm to contrast-enhanced portal venous phase liver computed tomography (CT) for improving quality and lesions detection rate compared with using adaptive statistical iterative (ASIR-V) under routine dose.The raw data from 42 consecutive patients who underwent CT were reconstructed three strength levels DLIRs (low [DL-L]; medium [DL-M]; high [DL-H]) two ASIR-V (30%[AV-30]; 70%[AV-70]). Objective...
A photochromic supramolecular photonic crystal based on host–guest interactions without an additional photothermal agent is reported, and the colour variation trend in correspondence with of incoming light.