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This article, titled "Easy and Feasible Closure for a Large Perforation After Gastric Full-Thickness Resection: Clipping Method with Symmetrical Anchors," discusses a case study of a 51-year-old woman who underwent surgery to remove a submucosal tumor in her stomach. After the tumor was removed, a full-thickness defect was exposed, and the authors attempted to close it using endoclip and endoloop suturing methods but were unsuccessful. They then used a method involving symmetrical anchors created by a hook knife to facilitate closure. The article includes images and a video demonstrating the procedure. The tumor was confirmed to be a schwannoma through histological examination. The authors acknowledge funding support and declare no conflicts of interest. [Extracted from the article]

The sub-binary systems Al-Ti, Ti-V, and Al-V are reviewed and adopted from the previous assessments, the thermodynamic analysis of the Al-Ti-V ternary system is performed by the CALPHAD approach, and a set of self-consistent thermodynamic parameters of the ternary system are obtained. Furthermore, the isothermal sections of this system at 1073 K, 1173 K, 1273 K, 1373 K, and 1473 K (800 °C, 900 °C, 1000 °C, 1100 °C, and 1200 °C) and the ternary invariant equilibria are calculated and compared with the corresponding experimental data, and all are in good agreement with most of the experimental results. Thus, the optimized thermodynamic parameters in this study may provide more accurate guidance to develop the new alloys involving it. [ABSTRACT FROM AUTHOR]

First-principles method was performed to predict the effect of Ti addition on thickness and adhesion of 55 pct Al-Zn-1.6 pct Si coating. The results of optimized geometric configurations, total energy, and charge distributions for the Ti substitution in Fe2Al5 and FeAl3 phases indicated Ti will grab electronic charges from Al atoms, form bonds with neighboring Al, which will reduce the growth of Fe-Al intermetallic layers, and finally enhance the adhesion of the coating/substrate. Furthermore, experiments were performed to validate the prediction results of first-principles successfully. [ABSTRACT FROM AUTHOR]

The microstructure and thickness of 55 pct A1-Zn-1.6 pct Si-0.2 pct RE coatings during continuous hot-dip on Q235 steel were investigated in this work. The experimental results revealed that the intermetallic layer was composed of the FeAl, FeAl, and α-FeAlSi phases. The results of thermodynamic calculations with Pandat software package (CompuTherm, LLC, Madison, WI) indicated that FeAl and α( β)-FeAlSi phase precipitated during the period of temperature cooling, which was consistent with experimental result. Then, the thickness of intermetallic layer was characterized. It was shown that the thickness of intermetallic layer decreased after 0.2 wt pct RE was added. Finally, a first-principles calculation was performed to interpret the effect mechanism of RE on the thickness of intermetallic layer. The results indicated that La substitution in FeAl and FeAl phases could grab electronic charges from Al atoms and weaken the formation of Fe-Al compounds. [ABSTRACT FROM AUTHOR]

With density-functional theory, the dissociative chemisorptions and diffusion processes of hydrogen on both pure and La-doped Mg(0001) surfaces are studied. Calculation results show that the energy barrier obtained for hydrogen dissociation on the La-doped Mg(0001) surface is smaller due to back-donated bonding between molecular H and doped La atom. The obtained diffusion barriers (0.8-0.22 eV) imply a fast motion of atomic H on La-doped Mg(0001) surface. [ABSTRACT FROM AUTHOR]