Highly efficient preparation of β-CD-based chiral monolithic column by "one-pot" hydroxymethyl polycondensation for enantioseparation in capillary liquid chromatography.

A facile strategy for highly efficient fabrication of chiral monolithic column was carried out by the simple "one-pot" hydroxymethyl polycondensation of native β-cyclodextrin (β-CD) and urea-formaldehyde (UF). In-situ rapid substitution of native β-CD and efficient polycondensation of β-CD products and UF oligomers was proposed and fulfilled in one pot. The feasibility, mechanism and key parameters of polycondensation reaction were discussed.

[A prospective study of serum fibroblast growth factor 21 changes in nonalcoholic fatty liver patients].

Objective: To investigate the prospective association of fibroblast growth factor 21 (FGF-21) with NAFLD development in a 5-year prospective study involving a population-based cohort comprising 352 Chinese subjects.

Methods: The clinical data of subjects were recorded, serum FGF-21 levels at baseline and follow-up were measured using an enzyme-linked immunosorbent assay,whether FGF-21 was independent predictor of NAFLD development were identified using logistic regressions. Chi-square test, non-parametric test and logistic regression analysis were used in statistical analyses.

[Spectral curve shape feature-based hyperspectral remote sensing image retrieval].

With the rapid development of technology of sensors and data transmission, using all kinds of airplane sensors and satellite sensors, the authors can get different voluminous remote sensing image data of earth. Those voluminous remote sensing image data bring problems of data storage and management. It is becoming increasingly necessary to retrieve some information the authors need from those voluminous image data.