Quantitative Review of Anesthesia in Liver Tumor Ablation: A Bibliometric Study from 1999 to 2022.

BACKGROUND Ablation has been developed as a radical surgical procedure for liver tumors. Local anesthesia in combination with general anesthesia or intravenous sedation is needed in ablative procedures. Although many studies have been published, a related bibliometric study is lacking. The present bibliometric analysis aimed to further understand the current situation of anesthesia for liver tumor ablation and discover candidate novel research directions. MATERIAL AND METHODS Web of Science Core Collection (WoSCC) was searched to identify studies associated with anesthesia for liver tumor ablation. Also, countries, journals, authors, and institutes contribution together with co-occurrence relations were analyzed by R, VOSviewer, and CiteSpace software; meanwhile, relevant research hotspots together with potential future trends were identified. RESULTS This work obtained 183 English-language documents during 1999-2022, and the annual growth rate was 8.83%. Most studies were conducted in the United States (24.04%, 44/183). The Oslo Univ Hosp contributed the most publications (n=11, 6.01%). Livraghi T (n=6), De Baere T (n=5), and Goldberg SN (n=4) ranked top in terms of cited authors and top authors. Keywords from that co-cited network were aggregated and identified, which revealed a shift in the liver tumor ablation anesthesia field. Initially, hotspots were predominantly "alcohol injection", "radiofrequency tissue ablation", and "metastases", but hotspots shifted to "efficacy", "ablation", "pain", "microwave ablation", "management", "analgesia", "safety", "irreversible electroporation", and "anesthesia" recently. CONCLUSIONS Anesthesia has received increased attention as liver tumor ablation advances. Bibliometric study findings provide insight into the current state and trends of anesthesia in liver tumor ablation research.

Hierarchical Co3O4@Ni3S2 electrode materials for energy storage and conversion.

Transition metal oxides are considered to be one of the most potential electrode materials. However, poor conductivity and insufficient active sites limit their actual applications. Rationally designed electrode materials with unique structural features can be ascribed to the efficient route for enhancing electrochemical performance. Here, we report hybrid Co3O4@Ni3S2 nanostructures obtained via a hydrothermal strategy and subsequent electrodeposition process. The obtained products can be used as electrodes for a hybrid supercapacitor with a specific capacity of 1071 C g-1 at 1 A g-1 and excellent rate capability. The as-assembled device delivers an energy density of 77.92 W h kg-1 at 2880 W kg-1. As an electrocatalyst, the above electrode possesses an overpotential of 237.6 mV at 50 mA cm-2 for oxygen evolution reaction.

The catalytic performance of Cu46Zr47-xAl7Yx amorphous ribbons in the degradation of AO II dye wastewater.

Metallic glasses (MGs) with unique disordered atomic stacking structures exhibit excellent catalytic performance in wastewater treatment. The catalytic degradation of Orange II (AO II) aqueous solutions by four CuZr-based MG ribbons under such processing parameters as pH values, the dosage of ribbons, and temperature was investigated in this paper. The catalytic performance of the MG ribbons was characterized by using the degradation efficiency of the dye wastewater. The phase constituent, surface morphology, and chemical valence state of elements on the surface of MG ribbons before and after use were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS), respectively. The results indicate that the Cu46Zr42Al7Y5 MG ribbon has the best catalytic performance among the Cu46Zr47-xAl7Yx (x = 0, 1, 3, 5) MGs in the degradation process, and the dye in the wastewater can almost be completely decolorized within 60 min under the conditions of pH = 2, the dosage of ribbons being 1.8 g/L and water bath temperature of 313 K, with the degradation efficiency and chemical oxygen demand removal being 96.05% and 51.73%, respectively. Furthermore, the Cu46Zr42Al7Y5 MG ribbon still shows superior structural stability and degradation performance after repeated use, and the corrosion pits on the MG surface promote the physicochemical reaction between the wastewater and the ribbons.

Effect of mechanical combined with electromagnetic stirring on the dispersity of carbon fibers in the aluminum matrix.

In order to improve the uneven distribution of carbon fibers (CFs) in the matrix by traditional single mechanical stirring, mechanical combined with electromagnetic (M-E) stirring was used to prepare short carbon fibers reinforced aluminum matrix (Csf/Al) composites. The 3-D flow field of aluminum melt under mechanical/M-E stirring were calculated and compared. The calculation results show that the complexity of flow field under M-E stirring could be significantly enhanced relative to a single mechanical stirring, especially there was a strong melt flow near the crucible wall due to the skin effect. It was found that except the inertial force under mechanical stirring and the melt collision with the crucible walls, CFs were also subjected to the electromagnetic force and the oscillating flow between the eddy currents, which would promote the dispersity of the short CFs in the composites. The experimental results are consistent with the calculation results. The experimental results show that the distribution of CFs at each position in the composite samples prepared under M-E stirring was stable. The uniform distribution of CFs in the composites would play an important role in improving the overall performance of the Csf/Al composites.

Evolution of microstructure and formation mechanism of Nd-Fe-B nanoparticles prepared by low energy consumption chemical method.

Nd2Fe14B nanoparticles were successfully prepared by using a low-energy chemical method. The microscopic characteristics and formation mechanisms of the phases were investigated at each stage during the preparation of Nd-Fe-B nanoparticles. The Nd-Fe-B intermediates, Nd-Fe-B oxides and reduced Nd-Fe-B nanoparticles were detected and analyzed by using TEM, STEM, XRD, SEM, VSM and Rietveld calculations. The results showed that the intermediate of Nd-Fe-B consisted of Fe3O4 and Nd and Fe elements surrounded by nitrile organic compounds. The Nd-Fe-B oxide was composed of NdFeO3 (48.619 wt%), NdBO3 (31.480 wt%) and α-Fe (19.901 wt%), which was formed by the reaction among Nd, Fe3O4 and B2O3. NdFeO3 and NdBO3 exhibited a perovskite-like lamellar structure, and the grain size was smaller than that of α-Fe. Nd-Fe-B particles were mainly composed of Nd2Fe14B and α-Fe phases. The small particles of NdFeO3 and NdBO3 and the interstitial position between oxide particles and α-Fe were more favorable for the formation of Nd2Fe14B particles. At the same time, the surface of α-Fe particles can also diffuse to form Nd2Fe14B nanoparticles. The coercivity of Nd-Fe-B particles was 5.79 kOe and the saturation magnetization was 63.135 emu g-1.