Plastic bags are everywhere in our lives, and it’s a convenience for our lives. For example, on a hurried morning, we often choose to let the seller put the food together and take it away. This kind of packaging usually uses plastic bags, but not all plastic bags can be used for food. Some plastic bags …
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Li River The fantastic Li River is the important component of Gulin scenery. It is located at Mountain Cat in Xinan county in the northeast of Guilin . It was 170 kilometres long,passing through gulin, Yangshuo then to Gongchen river in Pingle country. Li River, between Guilin and Yangshuo, was 84 kiometers like a jade …
1.Use of iodized salt. Iodine is an essential nutrient for the human body. Long-term iodine deficiency can lead to iodine deficiency. Eating iodized salt is the easiest, economical and effective way to eliminate iodine deficiency. The iodized salt contains sodium chloride and potassium iodate. The iodine required in the human body is provided by potassium …
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According to the National Bureau of Statistics, in the first half of 2018, the national coatings of enterprises above designated size totaled 8,394,900 tons, an increase of 0.6%. The cumulative output in the first three provinces and cities in January-June was: 1,764,700 tons in Guangdong, down 4.9% year-on-year; Shanghai was 984,400 tons, down 12.1% year-on-year; …
Since tap water is generally sterilized with chlorine gas, chlorine in tap water is a strong oxidant, which produces a very unstable strong oxidizing agent hypochlorous acid in water. The oxidant has a strong penetrating lethal effect on fish, which causes the mucus secreted by the fish to lose its protective effect on the fish, …
Why is tap water not suitable for fish directly in the goldfish pond? Read More »
Chemistry is very interesting, and this science can explain the various phenomena that occur around you. The reason why many people like chemistry is because some chemical reactions produce incredible visual effects. 1.Magical oscillation reaction This reaction is also known as the “oscillation clock”, in which the Briggs-Rauscher reaction is one of the most common …
Inventory of the world’s top 10 composite materials in 2019 Hot news in 2019 covers the latest developments in next-generation aerospace composites, thermoplastics, 3D printing, and shipbuilding and offshore wind. Here are 10 of the news with the highest interest in CompositesWorld in 2019. 01- Spirit Aviation Systems develops new carbon fiber fuselage panel The …
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“2019-nCoV” was discovered in 2019 due to Wuhan Viral Pneumonia cases and was named by the World Health Organization on January 12, 2020. Coronaviruses are a large family of viruses that are known to cause colds and more serious diseases such as the Middle East Respiratory Syndrome (MERS) and Severe Acute Respiratory Syndrome (SARS). The …
Introduction Pullulan is natural water-soluble polysaccharide, fermented by starch syrup with a selected strain of Aureobasidium pullulans. It consists mainly of maltotriose units linked through α-1, 6 – glucosidic bonds. It is an excellent film-former, producing a film which is heat sealable with good oxygen barrier properties. It can be used widely in both the …
Dietary safety has always been a topic of general concern. Fruit melons are common foods on people’s tables throughout the year. It is often said that vegetable and fruit vegetables with insect eyes are healthier than insect-free eyes, because no insects indicate that there may be no pesticides or pesticide residues. So, is this really …
