Publications by authors named "Xue-ping Gu"
The present work showed the green, eco-friendly synthesis of zinc oxide nanoparticles (ZnO NPs) using leaf extract of Cucurbita pepo. The prepared ZnO NPs were studied using different characterization techniques such as Fourier transform infrared (FTIR), X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis) and Transmission electron microscopy (TEM). TEM images confirmed the formation of NPs with average size of 8 nm.
View Article and Find Full Text PDF[Characterization of insoluble polyamide-6,T by MALDI-TOF MS].
Guang Pu Xue Yu Guang Pu Fen Xi
January 2010
Five different sample solvents (trifluoroacetic acid, tetrahydrofuran, formic acid, acetonitrile, 60% acetonitrile /5% trifluoroacetic acid) and two kinds of sample preparation methods were chosen for characterizing the structure, mole mass and mass distribution of insoluble polymer of polyamide-6, T (PA6T) by matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). It was shown that the spectra with wide mole mass and high signal-to-noise (S/N) ratio were obtained, when using 60% acetonitrile /5% trifluoroacetic acid as solvent, and solvent sample preparation with one step droplet method was better than non-solvent sample preparation. The main chain structure of PA6T polymerized in ionic liquid was analyzed, which was linear without the presence of cyclic polymer.
View Article and Find Full Text PDFArticle Synopsis
- The study aimed to understand how cultivating density and seed stock affect the yield and volatile oil in Curcuma wenyujin, providing guidance for standardized farming practices.
- Utilizing statistical analysis through SPSS, the researchers evaluated the harvest yield and volatile oil content from different medicinal parts.
- Results showed that higher cultivating density significantly impacted yields, with seed stock affecting certain parts of the plant; however, the interaction between density and seed stock had minimal effect overall.
Article Synopsis
- The study aimed to analyze the growth characteristics of Curcuma wenyujin to support the production of high-quality medicinal materials.
- Researchers observed plant morphology and measured the volatile oil and dry matter content in leaves, rhizomes, and roots at different growth stages.
- The findings revealed five growth stages and indicated that the optimal harvest time is mid-December, as this is when both dry matter accumulation in the rhizome and volatile oil content peak.