A5088614975- Advanced Cellulose Research Studies
- Power Transformer Diagnostics and Insulation
- High voltage insulation and dielectric phenomena
- Surface Modification and Superhydrophobicity
- Lignin and Wood Chemistry
- Berberine and alkaloids research
- Aerogels and thermal insulation
- Drug Transport and Resistance Mechanisms
- Lubricants and Their Additives
- Polymer composites and self-healing
- Synthesis and bioactivity of alkaloids
- Material Properties and Processing
- GABA and Rice Research
- Chemical synthesis and alkaloids
- Biological Activity of Diterpenoids and Biflavonoids
- Polymer Nanocomposites and Properties
- Corrosion Behavior and Inhibition
- Biological and pharmacological studies of plants
- Robotics and Sensor-Based Localization
- Surfactants and Colloidal Systems
- 3D Surveying and Cultural Heritage
- Petroleum Processing and Analysis
- Polysaccharides and Plant Cell Walls
- Cannabis and Cannabinoid Research
- 3D Shape Modeling and Analysis
Southwest University
2023-2025
Chinese Academy of Sciences
2007-2023
Shandong Institute of Automation
2023
University of Chinese Academy of Sciences
2007-2023
Guangxi Institute of Botany
2013
Kunming Institute of Botany
2007
Two new quaternary isoquinoline alkaloids, saxicolalines A (1) and N-methylnarceimicine (2), together with sixteen known alkaloids (3 - 18) were isolated from Corydalis saxicola Bunting. The structures of (2) established based on spectral methods including 1D, 2D NMR (COSY, HMQC, HMBC) HR-ESI-MS. anti-HBV activities ten main evaluated. Among the tested compounds, dihydrochelerythrine (8) exhibited most potent activity against HBsAg HBeAg secretions IC50 < 0.05 μM, SI > 3.5, respectively.
Nanoparticles are presently considered to be high-potential additives in insulation materials. Surface modifiers can not only improve the compatibility between nanoparticles and natural ester but also enhance performance of liquid. In this work, a mixture two oils (rapeseed oil + palm fatty acid ester) doped with 3-aminopropyltriethoxysilane (KH550)-TiO2 was prepared, 56-day thermal aging experiment implemented. Moreover, molecular dynamics simulation applied investigate improvement...
Free radical scavengers or antioxidants are currently forged as the drug candidates to counter many diseases, such drug-associated toxicity, inflammation, atherogenesis and aging in aerobic organisms [1][2][3] .Thus significance of free radicals pathogenesis various diseases has attracted considerable interest.Minor dietary compositions have been considerably deemed combat ill effects radicals.In addition, since that what may be learn from natural plants could overcome toxicity problem...
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Furfural as an ageing product of cellulose paper can be detected by the furfural content in oil. With construction green power grid, more and equipment adopts environmentally friendly insulating fluids. The investigation diffusion behaviors at different oil-paper interfaces provide a basis for fault detection transformers. liquid-solid interface natural ester-cellulose mineral oil-cellulose systems are investigated molecular dynamics simulation this paper. Results show that range...
Nanoparticles can significantly improve the insulation performance of oil-paper system. In this paper, using amino-modified SiO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> nanoparticles as nanoadditives, a soybean oil cellulose paper-oil paper model was established, and effect on water micro-diffusion in system systematically studied. The simulation experiment shows that with increase temperature, diffusion molecules oil-water is...
Corydalis taliensis Franch is a perennial herb used for treatment of rheumatic arthritis, toothache, and hepatitis. The chemical investigation this plant resulted in the isolation new compound, named taliensineside (1). Its structure was identified on basis spectral evidence. In addition, thirteen known isoquinoline alkaloids (2 - 14) were isolated by spectroscopic analysis comparison their data with those reported previously.
Nanoparticles can significantly improve the insulation property of oil-paper systems. In this paper, amino-modified SiO2 nanoparticles were used as nano-additives to establish a soybean oil-cellulose paper model, and effect on micro-water diffusion in systems was systematically studied. Simulation experiments show that effectively delay water molecules insulation. As temperature rises, compared with unmodified SiO2 nanoparticles, motionof oil-water model is slower. When 383K, molecule...
Trapezoidal Polyphenylsilsesquioxane (T-PPSQ) has good heat resistance, oxidation excellent mechanical properties, and dispersion in insulating materials, so it a prospect the modification of insulation materials. In this paper, influence T-PPSQ on performance thermal stability cellulose paper was studied by molecular simulation. models with content TPPSQ 0%, 3%, 6% 9% were established. The Mechanical parameters, (CED, FVF Temperature Distribution each model compared. It concluded that...
The oil-paper insulation system will be affected by the synergistic effects of moisture and acids during long-term stable operation transformer. in oil can combined with H+ ionised from acid molecules form H3O+ coordination, thus changing proportion distribution insulating paper cellulose. Natural ester oil, as a new development trend to replace mineral significantly improved adding nanoparticles them. diffusion behavior cellulose nano-SiO2-modified soybean oil-based natural has been...
Nanoparticles are presently considered to be high-potential filler materials in insulation medium. Surface-modified nanoparticles can not only improve the compatibility between and liquid but also enhance dielectric properties. Herein, models of soybean oil-based natural ester oil doped with two silane coupling agents (A151, KH550) modified SiO2 were established respectively. Molecular dynamics DFT first principles applied explore effect on properties liquid-insulation The results showed...