Growth mechanism of three-dimensional porous tin foam based on the coupled effects of reduction reaction competition and interface regulation.

This paper systematically conducted a study on the microstructural evolution of tin foam prepared by the hydrogen bubble dynamic template (HBDT) under key deposition parameters, and established a growth model for three-dimensional (3D) porous tin foam based on the coupled effects of competitive reduction reactions and interface regulation. By exploring the competitive relationship between hydrogen evolution and metal deposition, a novel mechanism was proposed for the hydrogen bubble template, revealing the dual role of hydrogen bubbles in metal deposition under the coupling of tin ion concentration and deposition potential. It was also elucidated that the competitive equilibrium between hydrogen evolution and tin ion reduction was crucial for sustaining the dynamic stability of the bubble template, ultimately inducing the formation of 3D porous structures.

Design and optimization of pore structure in three-dimensional micro-nano hierarchical SnO supercapacitor electrodes for enhanced ion diffusion.

This paper introduced a novel continuous electrochemical synthesis strategy to address the challenges of slow ion/electron transport rates and low electrode reaction efficiency in Sn-based electrode materials. This approach leveraged the induction and confinement of bubble templates to assist atoms deposition, generating micron-sized tin skeletons. Subsequently, these skeletons were transformed into a secondary nanoporous structure through dissolution-deposition etching effects.

Age-related differences in diffusion tensor indices and fiber architecture in the medial and lateral gastrocnemius.

Purpose: To investigate age related changes in diffusion tensor indices and fiber architecture of the medial and lateral gastrocnemius (MG and LG) muscles using diffusion tensor imaging (DTI).

Materials And Methods: The lower leg of five young and five senior subjects was scanned at 3 Tesla and DTI indices extracted using three methods: region of interest, histogram, and tract based. Tracked fibers were automatically edited to ensure physiologically relevant tracks.

[Allelopathy of garlic root exudates].

By the method of water culture, the root exudates of Cangshan garlic and Caijiapo garlic were collected to study their allelopathic effects on the seed germination and seedling growth of lettuce, and on the development of pathogens Fusarium oxysporum f. sp. cucumerinum and F.