Velocity field and turbulence structure of the meandering flow produced by alternating deflectors.

Meandering flow can be formed during the advance of natural rivers by the scouring of river banks. However, this phenomenon is not common in artificial cement channels. This study used experimental scouring terrain data for a numerical simulation to study the meandering flow pattern formed between double alternating deflectors in a straight channel. The numerical results showed that the path of the accelerated flow generated by the upstream deflector was changed by installing a downstream deflector while the flow rate remained unchanged. Thus, a meandering flow formed, and a stable, narrow, high-speed zone formed in the downstream area. The accelerated flow between the two deflectors hit the channel bank soon after its direction changed. Then, a strong downward flow formed in this area, which may have produced an elliptical scour hole. A large-scale vortex structure was formed in the elliptical scour hole, which was influenced by the horseshoe vortex system before the downstream deflector.

[Content comparison of main chemical compositions in Gardenia jasminoids roasted with ginger juice].

OBJECTIVE: To compare the contents of the main chemical compositions in Gardenia jasminoids before and after being roasted with ginger juice. METHOD: Four diterpenoid pigments constituents (C-1, C-2, C-3, crocetin) were determined simultaneously by UPLC on an Agilent Poroshell 120 EC-C18 column at 35 degrees C with the methanol-0.5% formic acid anhydrous in gradient elution as the mobile phrase. The detection wavelength was set at 440 nm and the flow rate was 0.4 mL x min(-1). Two iridoids constituents (G-1, G-2) were determined simultaneously by HPLC on an Agilent TC-C18(2) column at 35 degrees C with acetonitrile-0.5% formic acid anhydrous (18:82) as the mobile phrase. The detection wavelength was set at 238 nm and the flow rate was 1.0 mL x min(-1). RESULT: After being processed with ginger juice, the contents of the diterpenoid pigments constituents decreased slightly and the contents of the iridoids constituents increased slightly. CONCLUSION: The contents of the main chemical compositions in G. jasminoids roasted with ginger juice increased slightly with some regularity, but there were no significant differences.

Two new anthraquinone glycosides from the roots of Rheum palmatum.

Two new anthraquinone glycosides, named 1-methyl-8-hydroxyl-9,10-anthraquinone-3-O-ß-D-(6'-O-cinnamoyl)glucopyranoside (1) and rhein-8-O-ß-D-[6'-O-(3''-methoxyl malonyl)]glucopyranoside (2), have been isolated from the roots of Rheum palmatum, together with seven known compounds, rhein-8-O-ß-D-glucopyranoside (3), physcion-8-O-ß-D-glucopyranoside (4), chrysophanol-8-O-ß-D-glucopyranoside (5), aleo-emodin-8-O-ß-D-glucopyranoside (6), emodin-8-O-ß-D-glucopyranoside (7), aleo-emodin-ω-O-ß-D-glucopyranoside (8), and emodin-1-O-ß-D-glucopyranoside (9). Their structures were elucidated on the basis of chemical and spectral analysis.

[Effect of fuzheng yiliu granule on nuclear transcriptional factor-kappa B and cell cycle in patients with breast carcinoma].

OBJECTIVE: To explore the effect and clinical significance of Fuzheng Yiliu Granule (FYG) on nuclear transcriptional factor-kappa B (NF-kappa B) and cell cycle in breast tumor. METHODS: Fifty-five patients of breast carcinoma were randomly divided into the treated group and the control group, both were treated with conventional chemotherapy, but to the treated group, FYG was given additionally by oral taking. Operation was performed one month later to take out the tumor tissue for detecting NF-kappa B expression and ration of cells in different phases of cell cycle. RESULTS: Compared with the control group, NF-kappa B expression was significantly increased in the treated group, accompanied with increased G0/1 phase cell proportion and decreased S phase cell proportion as well as significantly reduced cell proliferation index (all P < 0.01). CONCLUSION: FYG could enhance the expression of NF-kappa B in breast tumor tissue, raise the proportion of G0/1 phase cells, decrease proportion S phase cells and reduce the cell proliferation index, showing an active action on the patients prognosis.