CCTV News: People are busy and spring comes early, and the three astronauts in the Chinese space station are also full of energy. Last week, the Shen 19th Crew carried out practical space science experiments, rendezvous and docking on-orbit training, equipment inspection and maintenance in the space station, and space life was busy and fulfilling.

In the field of aerospace medical experiments, many experiments are continuously carried out. Last week, the Shenniu Pier Group conducted a study on the stress of the bone muscles in the exercise group. Astronauts use muscle structure and function measurement, sole pressure collection, patch ultrasound and other equipment to collect plantar pressure, joint kinematic data and movement images of running and resistive movement under different load states during flight, and related muscle parameters to obtain the mapping relationship between parameters of different movement states and plantar pressure and the characteristics of muscle-tendon interaction change.

In the study of panvascular blood flow spectroscopy, the crew completed vascular ultrasound examination. This project explores the evolutionary law of the blood flow spectrum of the complex network of panvascular networks under weightless environments by collecting morphological characteristics, hemodynamic parameters and functional data of multiple organs or systems in the human body under different orbital durations.

What impact will the changes in astronauts' eye cranial pressure have on visual function during the "space business trip"? Three astronauts used visual function measuring instruments, hand-held optometry instruments, transorbital B-ultrasound and other equipment to complete multiple tests such as visual perception, far/near vision, diopter, eye axis and optic nerve sheath space. Scientific researchers will use relevant data to study the changes in a number of indicators such as astronauts' visual functions and other indicators in a long-term space environment, providing technical accumulation for ensuring visual health.

In addition, the experimental project in the field of microgravity physical sciences is carried out as planned. Last week, the astronaut completed a number of operations including disassembly and assembly of the experimental module of the fluid physics experiment cabinet, replacement of the space three-phase droplet migration load liquid bag, replacement of the combustion science experiment cabinet burner, replacement of the container-free cabinet experimental sample.

The rendezvous and docking training is one of the professional and technical training for astronauts during their orbit. Last week, the God-19-Cross Group used the metacognitive training system to complete training content such as image recognition under different initial conditions.

In terms of inspection and maintenance of facilities and equipment in the site, the crew completed a number of tasks such as biotechnology experimental cabinets, life ecological experimental cabinets, and on-track maintenance, regeneration and maintenance system equipment inspection and maintenance.