A5101675726- Carbon dioxide utilization in catalysis
- Silicon Carbide Semiconductor Technologies
- biodegradable polymer synthesis and properties
- Advanced DC-DC Converters
- Heat Transfer and Boiling Studies
- Induction Heating and Inverter Technology
- Heat Transfer and Optimization
- CO2 Reduction Techniques and Catalysts
- Covalent Organic Framework Applications
- Remote-Sensing Image Classification
- Electromagnetic Compatibility and Noise Suppression
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Water-Energy-Food Nexus Studies
- Remote Sensing and Land Use
- Polymer Foaming and Composites
- Organometallic Complex Synthesis and Catalysis
- Aerosol Filtration and Electrostatic Precipitation
- Heat Transfer Mechanisms
- Microfluidic and Bio-sensing Technologies
- Vehicle emissions and performance
- Water resources management and optimization
- Nanopore and Nanochannel Transport Studies
- Flood Risk Assessment and Management
- Polymer composites and self-healing
- Lattice Boltzmann Simulation Studies
Chinese Academy of Sciences
2017-2024
Institute of Information Engineering
2024
Chang'an University
2024
Central South University
2024
Qingdao University
2024
China Agricultural University
2021-2023
Changchun Institute of Applied Chemistry
2019-2023
Institute of Electrical Engineering
2017-2022
University of Chinese Academy of Sciences
2016-2022
University of Science and Technology of China
2019-2022
Unsupervised flood detection in large areas using Synthetic Aperture Radar (SAR) data always faces the challenge of automatic thresholding, because histograms large-scale images are unimodal, which thus makes it difficult to determine threshold. In this paper, an iteratively multi-scale chessboard segmentation-based tiles selection method is introduced. This includes a robust search procedure for obey bimodal Gaussian distribution, and non-parametric histogram-based thresholding algorithm...
Abstract Carbon dioxide (CO 2 ) is cheap, renewable, abundant, and nontoxic carbon feedstocks in chemical reactions. In the past two decades, utilization of CO polymer science has become a meaningful topic bridging separate subjects, namely valorization sustainable synthesis. This review summarizes recent progress copolymer materials from synthesis to material performance adjustment, focusing on commercialized or potential commodity such as biodegradable polycarbonates new structure...
Cooperative catalysis is a powerful strategy in the catalytic ring-opening copolymerization of epoxides and CO2, especially for breaking through dependence polymer selectivity on temperature restriction activity by catalyst concentration. In this work, to realize multisite cooperativity homogeneous catalysis, series oligomer catalysts flexibly bearing aluminum(III) porphyrin complexes side chains were synthesized reversible addition–fragmentation chain transfer (RAFT) polymerization. The...
Open AccessCCS ChemistryRESEARCH ARTICLE17 May 2022Unity Makes Strength: Constructing Polymeric Catalyst for Selective Synthesis of CO2/Epoxide Copolymer Ruoyu Zhang, Qingxian Kuang, Han Cao, Shunjie Liu, Xuesi Chen, Xianhong Wang and Fosong Zhang Key Laboratory Polymer Ecomaterials, Changchun Institute Applied Chemistry, Chinese Academy Sciences, 130022 University Science Technology China, Hefei 230026 , Kuang Cao Liu *Corresponding authors: E-mail Address: [email protected] Chen...
Cationic waterborne polyurethane (CWPU) was initially developed as a specific adhesive for anionic surface but now is ubiquitous in innovative material systems such poly(ionic liquid)s, polyelectrolytes, antibacterial coatings, and drug carriers. However, state-of-the-art CWPU faces imperative challenges like easy degradation poor water resistance, which caused by excessive incorporation of internal emulsifiers with tertiary amines into the backbone than necessary, since emulsification...
In addition to harsh conditions, CO2 is an excess in most chemical transformations due its sluggish reactivity. Herein, we realize the on-demand transformation of synthesis poly(ether carbonate) polyols through a comb-shaped metallic oligomer catalyst, displaying quantitative reaction and product specificity. contrast conventional single-site catalysts that suffer from direct depolymerization long before conversion, catalyst anchoring multiple aluminum porphyrin complexes at side chain...
Carbon dioxide (CO2) is the main greenhouse gas, whereas it also a nontoxic, abundant, cheap carbon and oxygen resource. The copolymerization of CO2 with epoxide presents sustainable approach to synthesis biodegradable polymers, which upcycles waste into wealth. Metal complex catalyst plays central role in reaction, since provides oxophilic Lewis acidic active center both for monomer activation chain end stabilization, nucleophiles as base initiation. However, heavy metal certain toxicity...
A compact wirebond packaged phase-leg SiC/Si hybrid module was designed, developed, and tested. Details of the layout gate drive designs are described. The IC chip for is carefully selected compared. Dual pulse test confirmed that, switching loss close to pure SiC MOSFET module, it much less than Si IGBT device. cost closer IGBT.
To obtain accurate information in a timely manner on built-up areas (BAs) is essential for urban planning and natural hazard (e.g., earthquakes) response strategies. In this paper, new method BAs extraction using the Sentinel-1 SAR proposed, which includes two steps: (1) Candidate are first selected as seeds from images that show high backscattering obvious textural patterns, characterized by image intensity, Getis-Ord index, variogram texture features; (2) region growing iteratively...
A two-in-one strategy for the photothermal ring-opening copolymerization (PROCOP) of carbon dioxide (CO2) and epoxides was developed by using visible light as an external stimulus. This bridges two processes involving light-to-heat conversion alternating CO2 epoxides. As a proof-of-concept, aluminum porphyrin complexes were explored catalysts to afford CO2/epoxides under 635 nm laser irradiation. We demonstrated photothermally enhanced polymerization activity, in which initiated effect...
A junction temperature monitoring method has been presented based on the on-state voltage at high currents. With a simplified physical model, this mapped relationship between and voltage. The tough calibration signal sensing issues are solved. Verified by body-diode detecting method, shows good performance accuracy, in meantime, it would not change modulation strategy topology of converter.
In this article, a practical electrothermal SPICE model is proposed based on finite differential method. Other than the conventional Fourier and Hefner model, distribution of excess carriers can be accurately solved by method in simulation tool. method, behavior device modeled using semi-mathematic model. order to verify modeling results, self-packaging insulated-gate bipolar transistor (IGBT) module tested both static characteristics dynamic characteristics, results presented fit well with...
A significant challenge in block copolymers (BCP) synthesis is to precisely control the sequence and customize composition structure of target products from monomer mixtures. Herein, we reported a facile temperature-programmed switchable strategy based on deprotection chemistry CO2, enabling precise construction BCPs. The proposed pattern was achieved via temperature-triggered terpolymerization epoxides/five-membered cyclic carbonates/cyclic anhydrides protection CO2. chemoprotection...
The petroleum-based vinyl monomers have advanced society as the essential feedstock of synthetic polymers, producing over 150 million tons attractive polymers annually. However, carbon–carbon backbone produced polymer prevents materials from biodegradation and causes pollution to environment. To combat this problem, a strategy in situ epoxidation-copolymerization was proposed work convert monomer styrene biodegradable polyester. We designed synthesized series tandem polymeric porphyrin...