Mechanisms of concentration control alkali activated fly ash stabilized saline soil in seasonally frozen regions.

In the framework of sustainable development and environmental preservation, this research aims to improve the stability and frost resistance of sulfate saline soil by utilizing industrial solid waste. Geopolymer materials containing fly ash (FA) activated by different NaOH concentrations were studied for study on stabilized soil with saline soil, with NaOH concentrations used ranged from 0.1 to 0.

High drug-loaded amorphous solid dispersions of a poor glass forming drug: The impact of polymer type and cooling rate on amorphous drug behaviour.

Enhancing the aqueous solubility via amorphization of crystalline poor glass-forming drugs represents a challenge, particularly when drug dosing is high. In such scenarios, there is often a need for high polymer loadings, leading to an increase in the dosage form mass and less patient acceptability. This work investigated the role that polymer type and after-melt cooling rate had upon the amorphicity of solid dispersions (SDs) containing high levels of naproxen and three commonly used polymeric excipients: Eudragit® EPO, Kollidon® VA64, and Soluplus®.

Properties of Macadam Stabilized with Cement and Asphalt Emulsion.

The cracking of cement-stabilized macadam (CSM) reflects to the asphalt layer, which is one of the reasons for the failure of pavement performance and structure. Adding asphalt emulsion to CSM can effectively prevent the formation of cracks. The primary purpose of this article is to reveal the effect of asphalt emulsions on the performance of CSM by adding different contents of asphalt emulsion.

Physical and chemical properties of soils in Kharkiv (Ukraine).

The purpose of this work is to determine the physical and chemical properties of soils in different regions of Kharkiv (Ukraine) and to explore their impact on the sorption of heavy metal ions: Cu and Zn. It has been established that the soils of gleyic chernozem and typical heavy black earth by their characteristics belong to highly buffer humified soils. According to the increase in the sorption capacity of the soil, it can be arranged in the following row: haplic arenosol < mollic gleyic fluvisol < gleyic chernozem < typical heavy black earth.