A5100589241- Polymer composites and self-healing
- Epoxy Resin Curing Processes
- Synthesis and properties of polymers
- Silicone and Siloxane Chemistry
- Advancements in Battery Materials
- Energy, Environment, Economic Growth
- Soft Robotics and Applications
- Advanced Battery Materials and Technologies
- Ecology and Vegetation Dynamics Studies
- Polymer Nanocomposites and Properties
- Mesoporous Materials and Catalysis
- Tribology and Wear Analysis
- Environmental Impact and Sustainability
- Efficiency Analysis Using DEA
- Forest Management and Policy
- Thermal Expansion and Ionic Conductivity
- Plant Disease Resistance and Genetics
- Micro and Nano Robotics
- Air Quality and Health Impacts
- Soil Carbon and Nitrogen Dynamics
- Robotics and Sensor-Based Localization
- Robot Manipulation and Learning
- Flame retardant materials and properties
- Air Quality Monitoring and Forecasting
- Drilling and Well Engineering
Northeast Petroleum University
2024
Guilin University of Electronic Technology
2024
Wuhan Donghu University
2024
Wuhan University
2024
Southwest University
2023-2024
China University of Geosciences (Beijing)
2023-2024
Inner Mongolia University
2023
Nanjing University of Aeronautics and Astronautics
2023
Beijing University of Chemical Technology
2018
Populus, one of the most extensively cultivated tree species in China, holds substantial potential for carbon sequestration and economic value. However, effects climate change on different Populus remain unclear. Consequently, there is an urgent to investigate distribution dynamics under current future scenarios. This study employed four ecological niche models integrated data from multiple environmental sources analyze patterns three key species—Populus tomentosa, cathayana,...
A growing number of large data sets have created challenges for the oil and gas industry in predicting reservoir parameters assessing well productivity through efficient cost-effective techniques. The design drilling plans a high-pressure tight-sand requires accurate estimations pore pressure (Pp) parameters. objective this study is to predict compare Pp Huizhou Sag, Pearl River Mouth Basin, China, using conventional techniques machine learning (ML) algorithms. We investigated...
Nowadays, numerous works have been undertaken to improve the fire resistance of polylactic acid (PLA). However, presence flame retardant usually shows a great destruction on mechanical properties PLA matrix, especially toughness. This paper presents new approach simultaneously enhance both retardancy and toughness by incorporating polyurethane‐microencapsulated ammonium polyphosphate (MCAPP). The prepared MCAPP was blended with melt compounding prepare PLA/MCAPP composites. results indicated...
Karyotype, as a basic characteristic of species, provides valuable information for fundamental theoretical research and germplasm resource innovation. However, traditional karyotyping techniques, including fluorescence in situ hybridization (FISH), are challenging low efficiency, especially when aneuploid polyploid plants. The use coverage whole-genome resequencing (lcWGR) data was explored, but existing methods complicated require control samples.In this study, new protocol molecular...
Machine learning (ML) methods have been applied extensively to simulate air pollutant concentrations and assess individual exposure in epidemiological studies. However, there is still a paucity of research on the temporal heterogeneity ML model performance impact dataset size. To explore when estimating daily fine particulate matter (PM2.5) across China 2021, we compared five decision tree-based models (Random Forest (RF), Categorical Boosting (CatBoost), Gradient Boost Regression Tree...
Segmenting unseen object instances in unstructured environments is an important skill for robots to perform grasping-related tasks, where the trade-off between efficiency and accuracy urgent challenge be solved. In this work, we propose a fast instance segmentation (Fast UOIS) method that utilizes predicted center offsets of objects compute positions local maxima minima, which are then used selecting initial seed points required by mean-shift clustering algorithm. This algorithm adaptively...
Lithium–sulfur (Li–S) batteries stand out as highly promising energy storage systems because of their superior theoretical capacity and the affordability sulfur an active material. However, inherent drawbacks have hindered commercialization Li–S batteries. Of these, polysulfide shuttle effect is one most critical issues, leading to rapid decline in battery capacity. To specifically address this issue, we successfully synthesized nitrogen-doped carbon-coated halloysite nanotubes (HNT@NC)...
A magnetically controlled steerable robot with the capability of flexible navigation and intraoperative ultrasonic imaging position sensing in neurosurgery is introduced this paper. The system uses a piezoelectric transducer as beacon applies permanent magnet actuation unit, which can steer following planned complex path to access target brain. In order enable navigate flexibly within tissues, method proposed enhance magnetic force by utilizing an array small blocks instead using large...
From carboxyl terminated vinyltetrahydrofuran-propylene oxide liquid copolymer (TVC), which has been successfully synthesized ealier (Ⅰ), we have an epoxy triblock (TVCE) by reacting the terminal of TVC with bifunctional resin. The three-component four-arm star telechelic was then prepared through copolymerization TVCE vinyl monomers, e, g.St, MMA, and BA plus MMA. effect some factors on dampling properties copolymers investigated.
This paper briefly introduces the recent developments in synthesis of telechelic polymers. It includes free radical oUgomerization, cationic oligomerization, group-transfer ringopening oligomerization and so forth.
Carboxyl vinyl terrninated-polypropylene oxide maeromers and telechelie oligorners were synthesized from hydroxyl terminated-polypropylene by end group conversion. From these or oligomers styrene, polypropylene oxide/polystyrene graft block copolymers the effects of molecular structure on damping properties studied.
The hydroxy-teminated phenoxy resin (HBA) was prepared by reaction of biphenol-Awith epichlorohydrin.HBA mixed with castor oil and reacted toluene diisocyanategiving polyurethane.The mechnical dynamic mechanical properties the polyurethanewere investigated in various composition.The polyuretheane obtained has a single Tg.Underoptimum content HBA NCO/OH ratio, series polyurethanes excellent dam-ping have been obtained.
The polyurethane elastomers from hydroxy-terminated copolymer of butadiene-acrylenitrile(HTBN) were prepared at different curing temperatures. Toluene diisocyanate was used as agent and N,N'-bis(2-hydroxypropyl)aniline chain extender. results showed that the rate depends on temperature high temperature, fast rate. activation energy reaction determined 39 kJ/mol. crosslinking density cured elastomer, therefore, tensile strength hardness elastomer increase with its elongation decreases...
Toughened epoxy resin with good properties was produced by adding isocyanate-termi-nated prepolymer obtained from hydroxy-terminated butadiene-acrylonitrile copolymer and toluene diisocyanate into resin. Its dynamic mechanical measured torsional braid method indicate that there are two peaks in the plot of logarithmic decrement △ against temperature above 0℃. The transmission electron micrographs show they have phase structures reversal occures while content being 30 phr. This phenomenon...
The polyurethane elastomers from hydroxy-terminated copolymer of butadiene-acrylenitrile(HTBN) were prepared at different curing temperatures. Toluene diisocyanate was used as agent and N,N'-bis(2-hydroxypropyl)aniline chain extender. results showed that the rate depends on temperature high temperature, fast rate. activation energy reaction determined 39 kJ/mol. crosslinking density cured elastomer, therefore, tensile strength hardness elastomer increase with its elongation decreases...
A number of polyurethane based on liquid,chloroprene-hydroxyethyl methacrylate copolymer (CP-HEMA)-polystyrene (ST) interpenetrating polymer networks (PU-ST-IPN) were synthesized. Some physical properties examined and density behavior was investigated.For 60% (PU) system, the tensile strength found to be increased clearly. Transmission electron micrographs showed existence phase separation sizes ST domains dispersed in PU esfimated about 500-4000Å. In comparison with correlative PU-MMA-IPN...