BEIJING, Sept. 17 (Xinhua) — The following is a summary of published science and technology news of China.
SPACEWALK
China’s Shenzhou-14 astronauts will conduct extravehicular activities (EVAs) for the second time within the next few days, the China Manned Space Agency (CMSA) announced on Friday.
The Shenzhou-14 astronauts are now in good condition, and the space station combination is operating stably, with the conditions in place for the crew’s second EVAs, the CMSA said.
LUNAR WATER
The analysis of moon samples brought back to Earth by China’s Chang’e-5 probe suggests that minerals on the lunar surface have a high content of solar-wind-derived water.
Researchers from the Institute of Geochemistry under the Chinese Academy of Sciences found a large amount of water in the returned lunar soil samples, with an estimated content of at least 170 parts per million, equivalent to 170 grams of water per tonne of lunar soil.
The discovery, which was published in the journal Nature Communications earlier this month, shows that the moon minerals are important reservoirs of water.
YAK EVOLUTION
Chinese researchers have revealed genetic and cellular mechanisms underlying adaptations of yak to low-oxygen environments.
Based on the data of genomics and transcriptomics, researchers from the Northwest Institute of Plateau Biology under the Chinese Academy of Sciences assembled two chromosome-level genomes, one each for wild yak and domestic yak, and screened structural variants (SVs) through the long-read data of yak and cattle.
According to the findings published in the journal Nature Communications, 127 genes carrying special types of SVs were differentially expressed in the lungs of cattle and yak. Researchers then found a yak-specific endothelial cell subtype which expresses genes associated with adaptation to a low-oxygen environment. Enditem
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