BEIJING -- Chinese scientists have developed a fully bioabsorbable capacitor as an energy storage unit, which can be used for powering implantable medical electronics.Biodegradable electronic devices can be fully or partly degraded in biofluid and environmental water. They can be used in implantable medical diagnoses and therapy, avoiding side effects caused by long-term implantation and second operations. They can also serve portable consumer electronics, which achieve self-degradation after being discarded and avoid high collection costs.For biodegradable electronic devices, the biodegradable power source is an indispensable part of realizing normal operation. However, research about energy supply for biodegradable implantable electronics is very limited.Scientists from the Beijing Institute of Nanoenergy and Nanosystems under the Chinese Academy of Sciences (CAS) as well as Beihang University have developed a fully bioabsorbable capacitor that can act as a power source for implantable medical electronic devices.The capacitor is 1.5 centimeters long, 1.5 centimeters wide and one millimeter high. Experiments on mice showed that it can be implanted underneath the skin and work normally in vivo for 50 days. It can achieve a high voltage window of 1.5 volts, and 70 percent of its capacitance was kept after 3,000 charging cycles.After it reaches its work limit, it can be decomposed and absorbed by the body without surgical removal.According to Li Hu, one of the researchers, the bioabsorbable capacitor provides a feasible solution for powering biodegradable implantable electronics in the future. It can be applied as a power source for implantable medical devices to achieve effective treatment of relevant diseases without side effects.Li said the performance of the bioabsorbable capacitor is world-leading with regard to its biocompatibility, work time, operation voltage and capacitance retention.We are also trying to further improve its capacitance to satisfy the specific power requirements of implantable medical devices, Li said.The research was published as cover research in the journal Advanced Science. best friend rubber braceletsrubber braceletscystic fibrosis rubber braceletscustom rubber braceletspersonalized rubber bracelets
[Photo/Xinhua] Almost 92 percent of the environmental violations uncovered this year during inspections of the lakes and waterways that supply China's drinking water have been addressed, the Ministry of Ecology and Environment said in a news release over the weekend. However, the problems that remain unsolved will be hard nuts to crack, it added. Officials discovered 6,251 violations during two rounds of inspections involving 1,586 bodies of water in May and September. The targeted locations provide drinking water supplies to cities in the Yangtze River Economic Belt and many more around China. As of Wednesday, 5,745 violations had been corrected, the ministry said on Saturday. Early this month, the Ningxia Hui autonomous region was found to have made no progress in fixing its two violations, but over the weekend it was listed among six provincial regions that have been given a 100 percent pass. Also on that list were Shanghai and the Inner Mongolia autonomous region. Sixteen regions, including Shandong and Sichuan provinces and Beijing, have addressed 90 percent of their problems, while Tianjin ranked last at 77.8 percent, the ministry said. The State Council published an action plan in March that focused on environmental protection in areas around drinking water sources. It vowed to root out violations found by inspectors by the end of this year. But accomplishing that task could be highly difficult, according to the ministry release, which said six provincial regions had failed to make progress as scheduled, including Guangdong and Jiangxi provinces and Tianjin. More than half the violations found in Guangdong, Jiangsu and Yunnan provinces have yet to be corrected, it said, adding that Guangdong, the country's most economically developed province, has 144 violations outstanding. A high-level inspection team has also criticized Siping, in Jilin province, for its slow progress in dealing with illegal tourism activities near a reservoir that supplies drinking water to 600,000 urban residents. During a visit late last year, the team, headed by a ministerial-level official, found a developer had felled 37,000 trees, seriously damaging the ecological environment. Local authorities failed to stop the illegal operation until July, and more than 200,000 tourists had visited the key protected area surrounding the reservoir this year, according to the team, which vowed to further investigate and hold those responsible to account. silicon wristbandsbeing human wristband onlinecustom poker braceletwristbands for eventsdesign rubber bracelets<%2fcenter>
