Technology News | Japan uses supercomputer to predict six quark particles

【Today’s cover】

With the arrival of winter, Tangga Township, located in the northeast of Dagze District, Lhasa, welcomes migratory birds such as black-necked cranes, bar-headed geese, and ruddy ducks. These "guests" who spend the winter here, together with the surrounding fields and wetlands, form the beautiful winter scenery of the plateau. Photo by Xinhua News Agency reporter Shen Hongbing

News Station

Source: China News Service, Beijing Winter Olympics Organizing Committee

●On the 13th, the International Olympic Committee, the International Paralympic Committee and the Beijing Winter Olympics Organizing Committee released the second edition of the "Beijing 2022 Winter Olympics and Paralympic Winter Epidemic Prevention Manual". The "Manual" stipulates that, except for medical exemptions, all personnel involved in the Winter Olympics must complete the full course of COVID-19 vaccination at least 14 days before coming to China to be exempted from centralized isolation and enter closed-loop management. Those who have not completed the full course of vaccination must undergo 21 days of centralized isolation after arriving in Beijing. (Source: China News Service)

Screenshot of the Ministry of Education’s official website

●On the 13th, the Ministry of Education announced that it had issued a notice requiring the strengthening of education app management and promoting the connection with the "double reduction" policy. The notice pointed out that before the local education administrative departments complete the approval of online subject training institutions for primary and secondary schools, the filing of online subject training apps for primary and secondary schools will be suspended; the relevant education apps that have been filed will be temporarily removed from the platform. The notice made it clear that the filing application for preschool online training apps will no longer be accepted, and the relevant apps that have been filed will be revoked. (Source: Xinhua News Agency)

Pure Technology

Framework equation for the contribution of soil temperature and water content to soil heterotrophic respiration. Image source: Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences

●Recently, Zeeshan Mohd, a postdoctoral fellow in the Global Change Research Group of Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, and researcher Sha Liqing, in collaboration with team members, conducted a study on the response of soil carbon emissions along the altitude gradient to climate warming in Ailao Mountain. The study selected the subtropical forest of Ailao Mountain as the research object and conducted soil transplantation experiments from high altitude to medium altitude, low altitude, and medium altitude to low altitude. The study shows that under the scenario of climate warming, warming has a greater impact on soil carbon stability at high altitudes. (Source: Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences)

● On the 13th, the Purple Mountain Observatory of the Chinese Academy of Sciences announced the research results of the first batch of lunar samples of Chang'e 5, which were completed by Xu Weibiao, a researcher of the Observatory, and his planetary chemistry research team in cooperation with the Nanjing Institute of Geology and Paleontology. The researchers said that multiple evidences showed that the lunar samples were a relatively rare high-titanium lunar mare basalt enriched in rare earth elements, which indicates that there may have been many volcanic eruptions in the landing area of ​​Chang'e 5 in history. The relevant results have been recently published online in the English version of the comprehensive academic journal Science Bulletin. (Source: Science and Technology Daily)

New findings

An artistic illustration of the newly predicted six-quark particle. Image source: Physicists' Organization website

●Recently, scientists from the RIKEN Institute of Physical and Chemical Research in Japan wrote in the latest issue of Physical Review Letters that they used supercomputers to predict the existence of a strange particle composed of six quarks. This research is expected to deepen scientists' understanding of how quarks combine to form atomic nuclei. (Source: Science and Technology Daily)

●On the afternoon of the 13th, several Sun Yat-sen University students posted that a suspected ancient tomb was found on the road section from the Huaishi Hall to the Yifu Building in the South Campus of Sun Yat-sen University. It is reported that Sun Yat-sen University discovered suspected tomb bricks due to construction work on campus. The archaeology teachers and students of the School of Sociology and Anthropology of the university have already inspected the site and made surveying records. Yi Xibing, director of the Guangzhou Cultural Relics and Archaeology Research Institute, said that the Guangzhou Cultural Relics and Archaeology Research Institute is following up according to procedures after receiving the report. (Source: Guangzhou Daily)

See the world

CCTV News video screenshot

●On the evening of the 12th, the South African presidential palace issued a statement saying that South African President Ramaphosa tested positive for the new coronavirus that day and is currently receiving treatment and self-isolating. Vice President Mabuza will assume the duties of the president next week. (Source: Xinhua News Agency)

CCTV News video screenshot

● On December 12, local time, due to a severe tornado attack, Kentucky, the United States, was plunged into darkness at night without power supply. On the night of December 10, six states in the central United States suffered multiple tornado attacks, causing about 330,000 users in four states to lose power. (Source: China News Service)

Grand View Garden

Image source: State Administration of Cultural Heritage

●On the 13th, the State Administration of Cultural Heritage hosted a ceremony for the collection of donated cultural relics. Two Ming Dynasty pottery figurines donated by Ms. Suzanne Fratus of California, USA, were officially collected by the Shanghai Museum. In April this year, the Chinese Consulate General in San Francisco received a postal express from Ms. Suzanne, which contained two colored standing figurines and a letter. The letter described the origin of her family and the two pottery figurines, and clearly expressed the hope that the cultural relics would be donated to the Shanghai Museum through the Chinese government and returned to the Chinese people. (Source: CCTV News)

Editor: Wang Yu

Reviewer: Wang Xiaolong

Final review: Liu Haiying

Science and Technology Daily