Modern Chinese inventions:
1. Herringbone railway
The herringbone railway has a long history of use and a wide range of applications. It is a simple, economical, efficient and practical railway line. Types of turnoff sections. After the popularization and development of herringbone railways, railway line intersection patterns such as zigzag and X-shaped have been derived, allowing trains to quickly change tracks between different railway lines. In the late Qing Dynasty, Chinese engineer Zhan Tianyou cleverly used the herringbone railway to overcome the difficulty of safely climbing hills due to the surrounding high-drop topography.
2. Hou's alkali production method
Hou's alkali production method, also known as the joint alkali production method, was founded in 1943 by Hou Debang, a Chinese chemical engineering expert. It is a method that combines the ammonia-alkali method and the synthetic ammonia method to produce two products, soda ash and ammonium chloride. The raw materials are salt water, ammonia and carbon dioxide, and the waste gas from the ammonia synthesis plant is used to produce hydrogen from water gas.
This method improves the utilization rate of salt, shortens the production process, reduces environmental pollution, reduces the cost of soda ash, and overcomes the shortcomings of the ammonia-alkali method. It once enjoyed a high reputation around the world and is widely used. . The combined alkali process of changing gas to produce alkali is unique in my country and has significant energy-saving effects.
3. Artificially synthesized insulin: In 1965, Chinese scientists completed the synthesis of bovine crystalline insulin. This was the first time in the world to artificially synthesize peptide bioactive substances. The first biologically active protein was artificially synthesized, breaking the boundary between the field of general organic compounds and the field of biopolymers with concentrated information, and taking an important step in the long process of human understanding of life phenomena.
4. Compound artemether: Compound artemether is the first drug with a new chemical structure discovered in China, and it is also an original Chinese drug that is currently widely recognized internationally. By the end of 2005, it had been designated as a first-line drug for malaria treatment by 26 Asian and African countries. It is a milestone in the history of the treatment of malaria, a highly contagious disease. Coartem is still the only Chinese patented drug that is widely recognized and sold around the world. It is the only Chinese drug that truly goes global.