Students from North China Electric Power University made trench oil into transformer insulating oil

Students from North China Electric Power University made trench oil into transformer insulating oil

Yesterday, at the final scene of the 4th National College Environmental Science and Technology Creative Design Competition, Chen Yanfeng and other students from South China University of Technology used recycled plastics to prepare recycled polypropylene composite plastics, which can be used to produce automotive plastic products and air-conditioning plastic products. They also use related technologies to reduce energy consumption during raw material transportation and processing.

The final on the eve of World Environment Day on June 5 was scheduled to be held at Lakeside Plaza of South China University of Technology. A total of 16 teams from 829 teams from 87 universities across the country gathered in Huayuan to compete for the final gold award.

A design project from the Noah team of the School of Electrical Engineering at Shandong University combines sails and turbines. The sails provide power for the ship to move forward. The turbine generates electricity when the ship stops and travels. This automatic control power generation system that uses a combination of tidal energy and wind energy enables the sailboat to generate electricity whether it is sailing or stationary.

At present, about 5 million tons of edible oil is used as "ditch oil" in China every year, and it is returned to the market by unscrupulous businessmen through simple treatment, which seriously affects people's food safety. The “favorite drain oil” team of North China Electric Power University has studied a preparation method, which can be used as transformer insulating oil. Captain Zhang Ning introduced that the test results showed that the modified oil sample met the transformer oil technical standards and the production cost was low.

Northwestern Polytechnical University's "Concept Design of Tree-to-Habitat Future Urban Housing", drawing on the long form of trees, proposed a three-dimensional, organic, growing and evolving architectural concept, allowing villas to develop vertically like trees, saving A large amount of land has also created more urban greening. Li Junyang, secretary general of the International Energy Conservation and Environmental Protection Association, greatly appreciated the design. He also made suggestions to students, hoping to comprehensively consider building energy conservation issues from three aspects of technology, design and management.

Six Hong Kong universities including the Hong Kong University of Science and Technology, the University of Hong Kong, the Hong Kong Baptist University, the Chinese University of Hong Kong, the Hong Kong Institute of Education, and the City University of Hong Kong also participated in the live demonstration. Student Yu from the Hong Kong University of Science and Technology told reporters that their team will make a "green building" theme report at the meeting to share with everyone the experience of environmental protection in Hong Kong.

The Ancient Egyptians were known for their creation of cosmetics, particularly their use of rouge. Ancient Egyptian pictographs show men and women wearing lip and cheek rouge. They blended fat with red ochre to create a stain that was red in color.

Greek men and women eventually mimicked the look, using crushed mulberries, red beet juice, crushed strawberries, or red amaranth to create a paste. Those who wore makeup were viewed as wealthy and it symbolized status because cosmetics were costly.

In China, Rouge was used as early as the Shang Dynasty. It was made from the extracted juice of leaves from red and blue flowers. Some people added bovine pulp and pig pancreas to make the product denser. Women would wear the heavy rouge on their cheeks and lips. In Chinese culture, red symbolizes good luck and happiness to those who wear the color.

In Ancient Rome, men and women would create rouge using lead II,Iv (red lead) and cinnabar. The mixture was found to have caused cancer, dementia, and eventually death.

In the 16th century in Europe, women and men would use white powder to lighten their faces. Commonly women would add heavy rouge to their cheeks in addition.

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