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What is the use of potassium fluorosilicate?
Those who make beams are weirs made of wood, stone, etc. to cross the flow of water, and in them are set up as fishing gear. It is widely used and has many benefits for fishing.
Watching the rivers and lakes of Fu, the water flows soup and soup. Fishermen set beams here, and they can take advantage of the trend of the current to make the fish enter the stream with the water, and it is difficult to escape. The design of the cover beam is like the shape of nature, and it is in the nature of flowing water. It is not forcibly caught, and the fish are from the beginning.
In the past, the people lived by fishing and hunting, and the beam was an important fishing method. On the riverside and lakeside, it is common to list beams, and fishermen come and go, and the harvest is quite abundant. This is not only the basis for livelihood, but also the scenery of the water village. And its use is not limited to fishing, but also has considerable ecological benefits. The existence of the beam provides a certain habitat for fish and helps them multiply. Fish swim among the beams, and aquatic plants also grow, forming a micro-ecology and blending with nature.
Furthermore, the method of fishing in the beam is milder than other species. It is not like fishing in the pool, but it is a sustainable method. It is based on adapting to nature, so that the source of fish is endless, and the people can benefit for a long time. Although the passage of time, fishing method new, but the law of Liang, still has its unique value, in the water town memory, for future generations to think of the ancient appreciation of the present.
What are the physical and chemical properties of potassium fluorosilicate?
The rationalization of the powder enzyme is as follows:
The powder enzyme is a polymer formed by the bonding of glucose glycosides. The powder can be divided into straight powder and straight powder. Straight powder is made of glucose with α-1,4-glycoside at the end of the phase, showing a high performance, which makes it have a uniform shape. In addition to α-1,4-glycoside, the powder has α-1,6-glycoside to form branches, which is more efficient.
In terms of solubility, the direct powder is soluble in cold water, and a solution can be formed in water. The powder has good dispersibility and higher solubility in water due to branching.
The color of the iodine effect is characteristic. Straight powder is dark in the case of iodine, because the spiral of straight powder can include iodine molecules to form a specific complex, which is the specific color. The powder is purple in the case of iodine, because the complex formed by the branch of iodine is different from that of straight powder, so the color of the powder is different.
In addition, the hydrolysis of the powder enzyme is also important. Under the action of acid or enzyme, the powder enzyme can be gradually hydrolyzed. The hydrolysis phase of acid is strong, and the glycosides are specific. Enzymatic hydrolysis is highly specific, such as α-powderase can hydrolyze α-1,4-glycoside, β-powderase can hydrolyze α-1,4-glycoside in sequence at the non-primary end of the enzyme, generating butytose. Different degrees of hydrolysis, can produce dextrin, oligosaccharides and other medium compounds, the most hydrolyzed glucose.
In addition, the gelatinase of the powder enzyme can not be ignored. Gelatinization is the process of the powder under the amount of water and the addition of the powder, the particles absorb water and expand, the crystal is broken, and the homogeneous paste is formed. And aging is the phenomenon of the gelatinized powder at low temperature, the molecules are rearranged and combined, and the hardness of the paste increases and the viscosity decreases. The use of these two powders in food and other fields is profound.
What is the production method of potassium fluorosilicate?
In "Tiangong Kaiwu", the sugar grits are made, and the first glutinous rice is taken. Choose the waxy, wash it and wash it very clean, and waterlodge it in the tank. Measure its temperature and control it when it is cold. If it is cold, it will be a little longer, and the temperature should be fast. After the stain is finished, it will come out, and it will be steamed into a rice cage.
When the rice is ready, spread it out to cool. Take another barley, germinate, and grind it into a powder. Wait for the waxy rice to cool to a suitable temperature, mix it evenly with the mashed malt, and seal it in an urn. The urn is placed in a warm place to ferment it. In the meantime, observe its changes, and wait for the saccharification and juice to come out. This is the critical time.
Then, take its juice and put it Gradually, the water evaporates, and the caramel thickens. Depending on its color turning yellow, the viscosity will gradually increase, and the heat will be ready.
When it is moderately thick, pour it on the table while it is hot, and stretch it repeatedly with wooden utensils. This process needs to be done while it is hot to make the sugar uniform and flexible in texture. After many stretches, the shape of the caramel grits begins. Its color is yellow and its taste is sweet. This is the key to making caramel grits in the ancient way.
What should be paid attention to when storing and transporting potassium fluorosilicate?
In the case of fluoric acid, it is sexually active and corrosive, and it is difficult to hide it. The following are the general requirements:
First and hidden place, it should be in a dry, clean and good place. This is because fluoric acid is easily absorbed by the tide, easily changed by the suction, or caused by the chemical. If it is in the place of the tide, it may be dissolved in water vapor, and the damage of rot will occur, endangering the surrounding things. And it can avoid the uncertainty caused by its high degree of corrosion. It can dissipate the harmful effects that may occur, and ensure the safety of the environment.
In addition, the hidden utensils must be made of corrosion-resistant materials. Glass, containing silicon dioxide, is easy to react with fluoric acid, so it cannot be used. Usually plastic or special alloy containers are suitable. Plastics have good corrosion resistance and can effectively isolate the external connection of fluoric acid. The special alloy has high resistance and resistance, which can ensure the safety of fluoric acid storage.
Until it is too late, the package must be packed. First seal the fluoric acid in the package to prevent it from leaking. Then use a solid outer package, such as a wooden box or a thick plastic box, to resist the shock and collision on the way. And then, it is equipped with necessary emergency equipment, such as neutralization and so on. As soon as there is a leak, it can be installed immediately to reduce the harm to the minimum. People are also affected by the problem, knowing the harm of its nature, and it is an urgent way.
In addition, if it is not hidden or damaged, it is all divided into acid, acid and oxidation. In case of acid or fluoric acid, it is easy to cause strong reactions; in case of oxidation, it may also cause ignition, explosion and other emotions. Therefore, it can be placed separately to avoid accidents. In this way, the safety of the storage of fluoric acid can be guaranteed.
What are the effects of potassium fluorosilicate on the environment and the human body?
"Tiangong Kaiwu" says: "Caramel chains are obtained by fermentation of grain grains. They have a considerable impact on both the environment and the human body."
As far as the environment is concerned, if the production of caramel chains is based on ancient methods, its raw materials are mostly grains. The cultivation of grains requires acres of fields, water and fertilizer. However, its production process is relatively natural compared to many chemical compounds today. The waste involved, such as residue, can still be used as fertilizer and returned to the field, which is less polluting to the environment. And the sugar-making technology has been passed down for a long time, contains the wisdom of the ancients, maintains the cultural ecology, and is of great significance to the cultural environment.
As for the human body, caramel chains are sweet and can be used as a sweetener for food. Eating in moderation can quickly replenish the energy needed by the human body, which is invigorating. And it has the power of nourishing the spleen and stomach, which is sometimes beneficial for those with weak spleen and stomach. However, if you eat too much, because its sugar content is quite high, it is easy to cause a sharp rise in blood sugar. In the long run, the risk of developing thirst may increase. And those who have abnormal spleen and stomach transportation and transformation are prone to phlegm and dampness, resulting in heavy body sleepiness and loss of appetite.
From this point of view, the caramel chain has its advantages and disadvantages in the environment, and it also needs to be used reasonably in the human body in order to seek advantages and avoid disadvantages, enjoy its benefits to the fullest, and avoid its harm.