A5084521056- Chromatography in Natural Products
- biodegradable polymer synthesis and properties
- Microplastics and Plastic Pollution
- Phytochemistry and Biological Activities
- Phytochemistry and Bioactive Compounds
- Berberine and alkaloids research
- Recycling and Waste Management Techniques
- Traditional Chinese Medicine Analysis
- Metal Alloys Wear and Properties
- Microstructure and Mechanical Properties of Steels
- Natural product bioactivities and synthesis
- Advanced materials and composites
- Flame retardant materials and properties
- Psoriasis: Treatment and Pathogenesis
- Sesquiterpenes and Asteraceae Studies
- Layered Double Hydroxides Synthesis and Applications
- Ziziphus Jujuba Studies and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Surface Treatment and Residual Stress
- Magnesium Oxide Properties and Applications
- High-Velocity Impact and Material Behavior
- Thermochemical Biomass Conversion Processes
- Medicinal Plants and Bioactive Compounds
- Corrosion Behavior and Inhibition
University of Bayreuth
2022-2024
Hohai University
2023
Jiamusi University
2023
Bavarian Polymer Institute
2023
Zhejiang Ocean University
2015-2017
Zhejiang University
2015-2017
Wuhan Puai Hospital
2014
Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences
2010
Guizhou University
2008
Abstract Research on the plastic contamination of organic fertilizer (compost) has largely concentrated particles and fragments > 1 mm. Small, submillimeter microplastic may be more hazardous to environment. However, research their presence in composts been impeded by difficulty univocally identify small such complex matrices. Here a method is proposed for analysis between 0.01 1.0 mm according number, size, polymer type compost. As first demonstration its potential, used determine large...
Abstract Biodegradable plastics (BDP) are expected to mineralize easily, in particular under conditions of technical composting. However, the complexity sample matrix has largely prevented degradation studies realistic conditions. Here composts and fertilizers from state-of-the-art municipal combined anaerobic/aerobic biowaste treatment plants were investigated for residues BDP. We found BDP fragments > 1 mm significant numbers final intended as fertilizer agriculture gardening. Compared...
Polystyrene (PS) is an important model polymer for the investigation of effects microplastic (MP) and nanoplastic (NP) particles on living systems. Aqueous dispersions PS MP or NP contain residual monomers styrene. In consequence, it not clear if observed in standard (cyto)toxicity studies are evoked by (MP/NP) particle monomers. We addressed that question comparing with in-house synthesized dispersions. proposed a rapid purification method dialysis against mixed solvents developed simple...
Abstract To investigate the influence of concentrations metal cations Ca2+, Mg2+ and Cl- in oil production water on corrosion Q235 steel, electrochemical impedance spectroscopy (EIS) potentiodynamic polarization curves were employed to quantitatively assess properties steel. The results showed that surface sample gradually changed from active dissolution passivation state with increase solution concentration, was significantly restrained at high ion content. When medium concentration is...
The effect of Mo addition on microstructure, impact property, and wear resistance high boron Fe-4.5 wt% B surfacing alloy, which was developed by the three-arc double-wire welding method investigated in this work. phase structure microstructure alloy were studied X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Electron Backscattered Diffraction (EBSD). Besides, a two-body abrasive test fracture carried out to study behavior mechanism alloy. results show,...
ABSTRACT In this study, a novel ‐intercalated layered double hydroxide (Sb‐LDH) was prepared by simultaneous recovering of LDH structures and intercalation into layers. The Sb‐LDH composites remain the hydrotalcite structure with geometry show higher thermal property than that LDH. When applied to poly(vinyl chloride) (PVC) composites, showed limited stability for PVC at early stage thermooxidative degradation processes. However, could retard cracking carbonaceous conjugated polyene which...
In this paper, the surface of Q345B steel was strengthened using ultrasonic shot peening (USP) technology. Through adjustment USP time, power and distance, morphology, roughness microhardness USPed samples were measured scanning electron microscopy (SEM), energy dispersive analysis (EDS), a roughmeter tester. At same corrosion behavior observed analyzed software simulation calculation an immersion experiment on dynamic polarization curve. tests characterization, influence different process...
To study the alkaloids in stems and leaves of Stephania cepharantha.The dried S. cepharantha were percolated with 95% ethanol solvent was removed by rotary evaporation to give a concentrate, concentrate extracted petroleum ether chloroform. Column chromatograghy on MCI CHP 20P, silica gel, Rp-18, Sephadex LH-20 polyamide applied for isolation purification chloroform fraction. The structures elucidated their physicochemical properties spectral data.Eleven obtained identified as lysicamine...
Nine flavonoids were isolated and identified as luteolin (1), luteolin-4'-O-beta-D-glucoside (2), acacetin-7-O-beta-D-glucoside (3), rutin (4), acacetin (5), quercetin (6), quercetin-3-O-beta-D-glucoside (7), kaempferol-3-O-beta-D-glucoside (8), Isorhamnetin-3-O-beta-D-glucoside(9) from Lysimachia paridiformis var. stenophylla, all these compounds this plant for the first time.
To study the chemical constituents of Periploca calophylla.Various chromatographic techniques were used to isolate constituents, and their structures identified by spectral methods.Two oligosaccharides isolated from chloroform part P. calophylla as 4-O-acetyl-beta-cymaropyranosyl (1-->4)-O-beta-D-cymaropyranosyl(1-->4)-O-beta-D-canaropyranosyl (1-->4)-O-beta-D-cymaropyranosy(1-->4)-O-oleandronic acid-delta-lactone(1), perisaccharide B (2).Compound 1 is a new compound. Compound 2 reported for...