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The concept of blockchain has received a lot of attention and research since it was first proposed in 2008. With the popularization and development of blockchain technology, its huge development opportunities in the field of Traditional Chinese Medicine(TCM) have gradually revealed. This article studies the development path and technical characteristics of blockchain, analyzes the current research status of application of blockchain technology in medical field. It also summarizes the application and future research directions of blockchain technology in four typical TCM fields: TCM big data safe storage, Chinese medicine traceability, TCM electronic medical record privacy protection, TCM cloud health system and wearable devices. It is hoped that this paper can provide useful reference for relevant research.

Blended-wing-body aircraft is a new type of aircraft form that has been used in military aircraft. The potential for application in civil aircraft is being explored. Due to its special shape, the blended-wing-body aircraft is difficult to adopt the conventional under-wing engine mounting form, and usually applies the back braced mounting. The engine mounted on the back could cause surge and separation problems, which affects the flow field quality of the whole aircraft. In this paper, the effect of height and axial mounting position on the overall flow field of the aircraft is determined by modelling and calculation of the blended-wing-body aircraft. The effect of airflow separation is analysed. The engine axial mounting position is discovered to have a significant effect on the elimination of flow separation.

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