Important compounds are sodium "soda ash, sodium carbonate, commonly known as" soda ". At first, some people from Marine plant extracting soda ash, however, production is very limited. Now, people use salt, acid and limestone as raw materials manufacturing soda ash. China's chemical workers, Mr Hou Debang major improvements to the way to the manufacture of soda ash, founded the "in-house". Soda ash is white crystal, often used for washing, business called "washing soda". Glass, soap, papermaking, oil and other industries are consumes hundreds of thousands of tons of soda.
As for the "baking soda", it is commonly known as bicarbonate of soda. Cure stomach trouble of baking soda, "soda biscuit," is to use it. Baking soda is a tiny white crystals, slightly salty, commonly used as starter cultures, because it is heated or the acid effect, very easy to emit carbon dioxide gas, honeycombing in dough.
There is also a "sodium hyposulphite", also a sodium compounds, sodium thiosulfate, say again "hypo". It is mainly used as a fixative in the history of photography, because it can react with a silver halide, silver complex form soluble in water, wash away the film redundant sensitizer, fixing effect. In addition, also used in the textile industry, which is used to remove excess oxygen after bleaching. In analytical chemistry, sodium thiosulfate is famous as a reducing agent.
People all know that the ancient egyptians like to put the person I love make it never rot mummies, now, scientists have made a fresh corpse, mummy to learn about these ancient anticorrosion technology.
This group of researchers refer to ancient Egypt mummified method, one leg of a contributions to scientific research. They put the leg in salt water, and then use the most advanced microscopy and imaging techniques to record the mummy of the production process. The results of the study provides researchers with some new clues about ancient Egyptian embalming.
From Greece plug SaSiDe Hume researchers at the university of Crete, Christina Papageorgopoulou said: \"we want to use the method of evidence to understand how the mummies of the production process, the only way is made personally.\"
Scientists know that most of the details about the ancient Egyptian mummification comes from the ancient Greek historian Herodotus. First of all, to remove the internal organs of the dead, including the brain. Then, on the chest and abdominal cavity disinfection, then put the body in the alkali (soda ash and sodium bicarbonate mixture containing bubble of the salt water, which can make the body dehydration, prevent rotting. Finally, with linen wrapped bodies buried.
Some studies have tried to use these methods to deal with animal or human organs, there are one or two times tried to use the whole body mummified, however the process of making mummy never use modern science and technology research and analysis. In the latest study, Papageorgopoulou and colleagues using the method of salt water to save the ancient Egyptian, handle a woman corpse leg donated by the university of Zurich. She said: \"if we use the whole body, you need to remove entrails.\"
Researchers at every two weeks to three weeks for testing samples, using the naked eye and microscope observation, DNA analysis and X-ray imaging methods are analyzed.
In general, the mummy was successful
NPK, microbial fertilizer, fertilizer