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Three-dimensional (3D) ultra-tiny Fe2O3 nanoparticles/graphene hydrogels were prepared using a facile and efficient solvothermal reaction, by which the phase of iron oxide, particle size and the morphology of hydrogels can be precisely controlled by simply adjusting the solvothermal reaction time. Accordingly, the effect of the microstructures of hydrogels on electrochemical performance was systematically studied. It was found that Fe2O3/rGO-50 hydrogels (with a solvothermal reaction time of 50 min) possessed a desirable crystallinity, suitable particle size, decent porous structure, large specific surface area and high electrical conductivity, thus exhibiting a superior electrochemical performance as binder-free anode of supercapacitors: a large potential range of 1.15 V, an ultrahigh specific capacitance of 1090 F·g−1 at a current density of 2 A·g−1 and excellent rate capability (531 F·g−1 at 10 A·g−1). The rational design and systematic research of electrode materials will provide new lights for the preparation of advanced electrochemical energy storage devices. [ABSTRACT FROM AUTHOR]

Objective: To observe the clinical efficacy of Yiqi Fumai Injection (YFI) combined hydroxychloroquine sulfate tablet in the treatment of Sjogren's syndrome patients., Methods: Eighty patients were randomly assigned to three groups. Forty patients in Group A were treated with YFI alone, 2. 6 g YFI added in 250 mL normal saline for intravenous dripping, once daily. Twenty patients in Group B took hydroxychloroquine sulfate alone, 0. 2 g each time, twice daily. Twenty patients in Group C were treated with YFI and hydroxychloroquine sulfate tablet (with the same dose and dosage as Group A and B). Fifteen days was taken as one course of treatment. The scores for dry mouth and dry eyes, the efficacy on salivary flow rate, Schirmer test, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), and IgG, and so on were compared among the three groups before and after treatment., Results: There was no significant difference in the laboratory parameters and clinical symptoms among the three groups before treatment. After treatment obvious improvement of the scores for dry mouth, the salivary flow rate, Schirmer test, ESR, CRP, and IgG was shown in all the 3 groups (P<0.05). Besides, the optimal effect was shown in Group C. Its total effective rate was 85% (17/20), better than that of Group A [80% (32/40)] and Group B [75% (15/20)], with no statistical difference (chi2 = 0.736 and 0. 695, P>0.05)., Conclusion: YFU combined hydroxychloroquine sulfate tablet showed better effects in treating Sjogren's syndrome patients than using Chinese medicine or Western medicine alone.

In the present paper, oxalic acid was used to reduce V(V) ion to V(IV) ion, then its complex with V(IV) was formed. By this method, four valence states of vanadium ions had different characteristic absorption peaks in the UV-Visible range. Based on these characteristic absorption peaks, qualitative and quantitative spectrophotometric analysis methods for different valence states of vanadium in vanadium battery electrolyte were established. The results showed that the related coefficients of four standard curves of different valence states were greater than 0.999 0, linearity ranges were 0.326-2.445, 0.326 -2.445, 0.720-5.403, and 1.784-13.437 g x L(-1), respectively. The measurement of samples suggested that the spectrophotometric analysis method was suitable for analyzing the concentration of valence states of vanadium with the RSDs (n = 6) in the range of 0.594%-3.535%.