BEIJING - China aims to recover the first stage of the Long March-8 carrier rocket, which is still under development and is expected to make its maiden flight around 2021, according to a Chinese rocket expert.It was part of China's endeavors to develop reusable space vehicles, Long Lehao, chief designer of carrier rockets at the China Academy of Launch Vehicle Technology, told a space conference in Harbin, capital of Northeast China's Heilongjiang province.The Long March-8 rocket will have two stages and two boosters: the first stage and boosters are expected to be retrieved through vertical landing, said Long, who is also an academician of the Chinese Academy of Engineering.If successful, the new rocket would provide commercial launch services to customers around the globe, Long said."China's aerospace industry is making efforts to develop low-cost vehicles that can enter space rapidly to support future large-scale space exploration and promote a commercial space industry," Long said.Bao Weimin, director of the Science and Technology Commission of the China Aerospace Science and Technology Corporation and an academician of the Chinese Academy of Sciences, said China's reusable carrier vehicle will use technologies different from those of U.S. commercial space firm SpaceX."As the current Long March 2, 3, 4 series rockets are fueled by toxic propellants, they cannot be recycled. But we are developing technologies to precisely control the fall of the rocket remains to ensure safety," Long said.That effort is important as residents in possible landing areas have to be evacuated at every launch. As China's aerospace activities become more frequent, with 36 launches planned this year, precise control of falling rocket remains could save a lot of trouble.Long also introduced the development roadmap for China's space transportation system.Around 2025, reusable suborbital carriers will be successfully developed and suborbital space travel will be realized. Around 2030, rockets with two reusable stages will be developed. Around 2035, carrier rockets will be completely reusable which could realize the dream of space travel for ordinary people.A future generation of carrier rockets will be put into use around 2040 and hybrid-power reusable carriers will be developed. Space vehicles will be more diverse, intelligent, reliable, low-cost, efficient and convenient."Those targets are not easy to achieve, and lots of technological difficulties must be solved," Long said. custom bar braceletcustom sports braceletscustom logo wristbandsde securite pour personne ageeembossed wristbandscolorfilled wristbandsembossed printed wristbandsdual layer wristbands
Pepsi and Coca Cola are seen in supermarket in China, on Oct 13, 2016. [Photo/IC] BEIJING - China will make efforts to reduce sugar intake among both children and adults, in a bid to improve the nation's oral health, according to an action plan recently released by the National Health Commission. Primary and middle schools, as well as nurseries, should restrict sales of beverages and snacks high in sugar, said the oral health action plan covering the period from 2019 to 2025, which also required school canteens to offer less sweetened beverages and sugar-rich foods. The country will encourage food manufacturers to use reduced sugar or sugar-free claims, and help consumers learn how to identify added sugar on nutrition facts labels, according to the plan. A goal has been set to cut the caries incidence among 12-year-old children from 34.5 percent in 2016 to under 30 percent by 2025, the plan said. It expects the average remaining teeth of seniors aged between 65 and 74 to reach 24 by 2025, while the figure was 22.5 in 2016. Interventions will be strengthened to improve oral disease prevention and control, including a ban on smoking in public areas and education about harms of the areca nut, one of the leading causes of oral cancer.
