As is known to all,Chinese people once again face the virus crisis-COVID-19.In the beginning,people all over China were in panic.But the epidemic is getting better with the efforts of all Chinese people.Many ordinary ...As is known to all,Chinese people once again face the virus crisis-COVID-19.In the beginning,people all over China were in panic.But the epidemic is getting better with the efforts of all Chinese people.Many ordinary people are playing a role in stopping the epidemic.My parents are among them.My father,a common government official.展开更多
COVID-19 outbreak spreads across the globe in 2020.The National Art Museum of China teams up with the Chinese National Academy of Arts are actively engaged in artistic creations used for recording events of fighting a...COVID-19 outbreak spreads across the globe in 2020.The National Art Museum of China teams up with the Chinese National Academy of Arts are actively engaged in artistic creations used for recording events of fighting against the COVID-19 with artwork,and make efforts to promote the spirit of fighting against and overcoming the COVID-19.展开更多
COVID-19 outbreak spreads across the globe in 2020.The National Art Museum of China teams up with the Chinese National Academy of Arts are actively engaged in artistic creations used for recording events of fighting a...COVID-19 outbreak spreads across the globe in 2020.The National Art Museum of China teams up with the Chinese National Academy of Arts are actively engaged in artistic creations used for recording events of fighting against the COVID-19 with artwork,and make eftorts to promote the spirit of fighting against and overcoming the COVID-19.展开更多
A boat full of Vietnamese women sails across Beilunhe River which borders China and Vietnam. The women come to the Chinese side for a day's trade before turning back home at 5:00 pm. The border river Beilunhe Rive...A boat full of Vietnamese women sails across Beilunhe River which borders China and Vietnam. The women come to the Chinese side for a day's trade before turning back home at 5:00 pm. The border river Beilunhe River could narrow to some 20 meters when the tide ebbs low.展开更多
Corn rod-like WO<sub>3</sub> nanomaterials were successfully synthesized by a simple hydrothermal method. The morphology, structure and optical absorption properties of the prepared samples were characteri...Corn rod-like WO<sub>3</sub> nanomaterials were successfully synthesized by a simple hydrothermal method. The morphology, structure and optical absorption properties of the prepared samples were characterized by SEM, XRD, FTIR and UV-Vis-DRS. The WO<sub>3</sub> materials were corn rod-like morphology with about 800 nm for length and 150 nm for diameter, especially there were plenty of corn particles (about 20 nm) on the surface of corn rods. The X-ray diffraction peaks of the products corresponded with WO<sub>3</sub> standard card, and the characteristic peak of W-O bond was found in the infrared spectrum. The absorption band edge of the products was about 480 nm, indicating their potential visible-light-induced photocatalytic activity. In situ FTIR technology research showed that the prepared WO<sub>3</sub> nanomaterials had visible photocatalytic activity to gas-phase toluene. After a photocatalytic reaction for 8 hours toluene was effectively degraded, and carboxylic acid and aldehyde could be regarded as the intermediate products, and CO<sub>2</sub> was produced as the final product during the reaction process.展开更多
文摘As is known to all,Chinese people once again face the virus crisis-COVID-19.In the beginning,people all over China were in panic.But the epidemic is getting better with the efforts of all Chinese people.Many ordinary people are playing a role in stopping the epidemic.My parents are among them.My father,a common government official.
文摘COVID-19 outbreak spreads across the globe in 2020.The National Art Museum of China teams up with the Chinese National Academy of Arts are actively engaged in artistic creations used for recording events of fighting against the COVID-19 with artwork,and make efforts to promote the spirit of fighting against and overcoming the COVID-19.
文摘COVID-19 outbreak spreads across the globe in 2020.The National Art Museum of China teams up with the Chinese National Academy of Arts are actively engaged in artistic creations used for recording events of fighting against the COVID-19 with artwork,and make eftorts to promote the spirit of fighting against and overcoming the COVID-19.
文摘A boat full of Vietnamese women sails across Beilunhe River which borders China and Vietnam. The women come to the Chinese side for a day's trade before turning back home at 5:00 pm. The border river Beilunhe River could narrow to some 20 meters when the tide ebbs low.
文摘Corn rod-like WO<sub>3</sub> nanomaterials were successfully synthesized by a simple hydrothermal method. The morphology, structure and optical absorption properties of the prepared samples were characterized by SEM, XRD, FTIR and UV-Vis-DRS. The WO<sub>3</sub> materials were corn rod-like morphology with about 800 nm for length and 150 nm for diameter, especially there were plenty of corn particles (about 20 nm) on the surface of corn rods. The X-ray diffraction peaks of the products corresponded with WO<sub>3</sub> standard card, and the characteristic peak of W-O bond was found in the infrared spectrum. The absorption band edge of the products was about 480 nm, indicating their potential visible-light-induced photocatalytic activity. In situ FTIR technology research showed that the prepared WO<sub>3</sub> nanomaterials had visible photocatalytic activity to gas-phase toluene. After a photocatalytic reaction for 8 hours toluene was effectively degraded, and carboxylic acid and aldehyde could be regarded as the intermediate products, and CO<sub>2</sub> was produced as the final product during the reaction process.
