Corrigendum: What are the important factors influencing the physical activity level of junior high school students: a cross-sectional survey.

[This corrects the article DOI: 10.3389/fpubh.2024.

Resource utilization of microcrystalline magnesite: Synthesis of magnesium oxide by malic acid steam-assisted decomposition method for the synergetic adsorption of Congo red dye and Cu(II) ion.

Microcrystalline magnesite, a rich raw mineral material, has been used to prepare magnesium-based adsorbents for the removal of dyes and heavy metal ions. Here, MgO adsorbent with well-developed edges, high surface area (96 mg·g) and abundant mesopores is prepared by malic acid steam-assisted decomposition method using light-burned MgO with a loose and porous structure as raw materials. Compared to the industrial light-burned MgO with dense structure, the malic acid steam can easily enter the interior of loose block, which promotes the crosslinking effect of magnesium malic and enhances the crystal growth of MgO.

A review on the synthesis of metal oxide nanomaterials by microwave induced solution combustion.

With the increasing awareness of environmental protection and health, the preparation of metal oxide nanomaterials by environmentally friendly methods is favored by more and more researchers both at home and abroad. The preparation of metal oxide nanomaterials by a microwave-induced solution combustion synthesis method can significantly reduce the reaction time, energy consumption, and the use of toxic chemicals, which is an energy-saving, environmentally friendly method for nanomaterials synthesis. In addition, the microwave-induced solution combustion synthesis (MISCS) method has many advantages such as fast reaction speed, high selectivity, small product size, and homogeneous composition.

Improved sintering performance of β-SiAlON-SiN and its osteogenic differentiation ability by adding β-SiAlON.

To improve the sintering performance of silicon nitride bioceramics, we explored the effect of β-SiAlON's Z-value on the physical, chemical, and biological properties of β-SiAlON-SiN composites. Results showed that the phase product was β-SiN. As the Z-value increased, the X-ray diffraction peaks gradually shifted to a smaller angle, the material grains were more tightly packed, and the bulk density and compressive strength increased, reaching the highest values (2.