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In recent years, with the continuous growth of coal-fired power generation in China, as the most important solid waste of coal-fired power plants, the emission of fly ash has also increased sharply with the growth of coal consumption. Fly ash is a by-product of burning coal in coal-fired power stations. Large amounts have been discharged from power plants and dumped on reclaimed land or into the sea, posing potential risks to the environment around these areas and causing serious social and environmental problems. On the other hand, the content of aluminum and silicon elements in fly ash is very high, which has a very high extraction value. Due to the special physical and chemical properties of hydrogen, physical adsorption storage of hydrogen energy has the advantages of safety and reliability, rapid adsorption and desorption of hydrogen under mild conditions. In this paper, ZSM-5 zeolite with high crystallinity is directly synthesized by hydrothermal synthesis using fly ash pretreatment and its hydrogen storage performance is studied. [ABSTRACT FROM AUTHOR]

Gunpowder is one of the four great inventions of ancient China, which once had an important impact on the world pattern and development process. However, after the late Ming Dynasty and the early Qing Dynasty, gunpowder firearms gradually declined in China. Gunpowder moved to the West with the war and became black powder, which promoted the birth and development of modern chemical science. The development of chemical science is of great significance to the dynamite family. The brilliant achievements of China's modern king of dynamite revitalize the glory of Chinese gunpowder. This paper reviews the legendary development course and the groundbreaking role of dynamite, describes the properties, rich types and unique working principles of its special chemical energy, and tries to trace the internal mechanism of gunpowder combustion and explosion. It aims to highlight the importance of scientific thinking mode and the development of chemistry discipline to the study of explosives, so as to continuously enrich the knowledge connotation of chemistry students, stimulate their enthusiasm for innovative thinking, enhance their professional confidence, cultural confidence and national confidence, and promote the spirit of scientists. [ABSTRACT FROM AUTHOR]

As an economic crop, ginseng has been planted in China for thousands of years. Because of its various pharmacological activities, ginseng is widely used in food, medicine, cosmetics and other fields, but the actual output of ginseng can't meet the market demand at present. Improving the production efficiency of ginseng is still the primary objective of ginseng planting research. In recent years, many new modes, technologies, methods and instruments have emerged in the production, such as site election, seed treatment, sowing, scaffolding, cultivation and harvesting. This paper summarizes the research status of ginseng cultivation from cultivation mode and techniques, hoping to provide reference for improving the production efficiency of ginseng. [ABSTRACT FROM AUTHOR]

Posaconazole， as the second generation of triazole antifungal drugs， has a wide antifungal spectrum and strong antibacterial activity. It is widely used in clinical practice. However， it has been eight years since its publication before it is approved in China. In order to better understand posaconazole， a first-line drug with great clinical demand， this paper summarizes the pharmacokinetics， pharmacological properties， clinical application and synthetic route of posaconazole in the literature at home and abroad. It is hoped that it can fill the gap in the domestic API market， break the current situation that the API is completely dependent on import， and provide a useful reference for the industrial R ＆ D. [ABSTRACT FROM AUTHOR]