Anatomical type analysis of right interlobar artery based on chest thin-slice CT scan and three-dimensional reconstruction.

PURPOSE: To analyse and summarize branching pattern types of the interlobar portion of right pulmonary arteries (RPA) through chest thin-slice CT scans and three-dimensional reconstruction. METHODS: A total of 179 patients (58 males and 121 females, with an average age of 53.9 years) at the Thoracic Surgery Department of Ningbo First Hospital were retrospectively included from December 2020 to December 2021. All patients completed preoperative thin-slice CT scans and three-dimensional reconstructions of the chest. The clinical data and branching patterns were collected. Data were analysed using SPSS 21.0. RESULTS: The branching pattern types of the interlobar portion of RPA were divided into 4 types according to the order and number of branches: Type I (145/179, 81.0%), Asc. A2, MA, A6; Type II (28/179, 15.6%), Asc. A2 deletion, MA, A6; Type III (5/179, 2.8%), Asc. A2, A6, MA; and Type IV (1/179, 0.6%), MA, Asc. A2, A6. Type I was the most common pattern. Furthermore, according to the number of branches of MA and A6, this pattern can be subdivided into 15 subcategories. CONCLUSION: Chest thin-slice CT scans and 3D reconstructions can provide surgeons with accurate lung anatomy, which helps surgeons perform preoperative planning and complete surgery successfully.

The role of anthraquinone-2-sulfonate on biohydrogen production by Klebsiella strain and mixed culture.

The role of anthraquinone-2-sulfonate (AQS) on biohydrogen production was explored in this study. The hydrogen molar yield (HMY) of the batch experiment with 0.2 mM AQS was not significantly improved comparing to that without AQS, but the acetate and ethanol yields were increased by 12.1% and 9.82%, respectively. According to the metabolites flux analysis, e- balance calculations and stoichiometry results, the biogenic anthrahydroquinone-2,6,-disulfonate (AH2QS) preferred to improve the H2 generation that catalyzed by hydrogenase, but not likely affect the H2 generation that through formate cleavage pathway (FCP). However, comparing to the mix culture without AQS, the hydrogen production rate and hydrogen yield were increased by 20.97% of 1.96%, respectively, in the presence of AQS. The results of this study provided better understanding of the role of AQS on biohydrogen production by the strain that follows FCP, and the synergistic biohydrogen production by the co-culture that follows FCP and butyrate/acetate pathway.

Efficient Biodegradation of Azo Dyes Catalyzed by the Anthraquinone-2-sulfonate and Reduced Graphene Oxide Nanocomposite.

An anthraquinone-2-sulfonate and reduced graphene oxide nanocomposite (AQS@rGO) was prepared and the improvement on the biotic reduction of a pollutant, i.e., azo dye, was demonstrated. Electron paramagnetic resonance signal of the semi-quinone radical in the well-dispersed solid AQS@rGO solution was detected. Although the as-prepared AQS@rGO has a negligible adsorption capacity toward methyl orange (MO) dye, the decolorization efficiencies in both flask experiments and sequencing operation reactors in the presence of AQS@rGO were increased by more than 1.5 times as compared to that with graphene oxide, and an efficient and continuable catalytic effect on the decolorization of azo dyes in seven operation periods was maintained. The catalytic effect on reduction was caused by the formation of a space-charge layer, which facilitates the efficient e- transfer from the conductive rGO sheets to the C=O of the AQS molecule. The results suggested that the AQS@rGO may act as an efficient insoluble redox mediator, which is important for the pollution control by accelerating the extracellular electron transfer.

Enhanced decolorization of methyl orange by Bacillus sp. strain with magnetic humic acid nanoparticles under high salt conditions.

In this study, magnetic humic acid (MHA) nanoparticle was prepared and confirmed the enhancement on reduction of azo dyes under high salt concentration. The anaerobic growth of the strain Bacillus sp. on quinones makes the biogenic hydroquinone feasible, and the latter was proven to reduce the azo dyes stoichiometrically. This in-situ reversibly oxidation and reduction of MHA acts as electron shuttle to catalyze the biotic reduction of the azo dyes. The biodegradation efficiencies in batch experiments and sequencing batch reactor with MHA were increased by 1.5-2.5 times as compared to that of control without the catalyzer. Moreover, the negligible leaching of HA under various environmental conditions suggests the robustness of the coating of HA on Fe/O surface. These results indicated that the as-prepared MHA could be used as redox mediator to accelerate the extracellular electron transfer, which is of great environmental significance for the removal of hazardous compounds.