China has the potential to achieve or undermine the potential of the world aluminum market Durban News: Australia's Macquarie Bank metal analyst Adam Rowley said at the 18th World Aluminum Congress held here that China has achievements or Destroy the huge potential of the world aluminum market. He believes that the improvement of the world economic situation has driven the growth of market demand. In 2004, the demand of the aluminum market in the western world will increase by 4%, while the Chinese market may increase by 19%. China’s aluminum output has grown too much and too fast, and the dangers have also existed. Once domestic demand slows, a large amount of aluminum will find its way into the international market, which will damage the normal market order. From January to August this year, China's aluminum production rose by 28% or 773,000 tons to 3.51 million tons, and it is expected to reach 5.1 million tons throughout the year. In 2007, China could produce 11 million tons of aluminum annually. Raleigh predicts that in 2004 the world aluminum market will have a gap of about 100,000 tons. The average price of LME three-month aluminum will be $1,460/ton. Source: Chinalco Information Network
2. Make the specimen relatively fixed;
3. It is convenient to use the capillary phenomenon to form a gradient when adding various reagents (staining agent, acid, salt solution);
4. Avoid contamination of the specimen.
The cover glass is covered on the material on the glass slide, which can avoid the contact between the liquid and the objective lens, so as not to contaminate the lens, and can make the top of the observed cells in the same plane, that is, the distance from the objective lens is the same, so that the observed Images are clearer.Why do you need a coverslip when using a microscope
1. Make the object to be observed form a thin film, which is easy to transmit light and easy to observe;2. Make the specimen relatively fixed;
3. It is convenient to use the capillary phenomenon to form a gradient when adding various reagents (staining agent, acid, salt solution);
4. Avoid contamination of the specimen.
The purpose of staining the specimen with iodine solution is to make the cells more obvious under the microscope, and it can also kill the cells and prevent the cells from migrating.
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