Preparation of hybrid aerogels for vacuum drying

Under the strong support of the Ministry of Science and Technology and the National Natural Science Foundation of China, scientists from the State Key Laboratory of Polymer Physics and Chemistry of the Institute of Chemistry, Chinese Academy of Sciences, for the first time prepared a flexi.......

January 23 Lanzhou Steel Market Price Quotes

Product Name Specification Material Steel Factory/Origin Price (Yuan/Ton) Yesterday Last Week Last Month General Line Φ6.5mm Q235 Ba Steel 4300 0 0 20 High Line Φ6.5-10mm Q235 Ba Steel 4350 0 0 20 High Line Φ6 .5-10mm Q235 Jiuquan 4350 0 0 20 Threaded steel Φ12-14mm HRB335 Eight s.......

Effect of fertilizer input on soil nutrient content

Soil nutrient status is an important indicator of farmland soil fertility. The fixed monitoring of farmland fertilizer input and soil nutrient levels can not only be used to guide the application of fertilizers in the surrounding farmland, but also the results of long-term monitoring.......