quinoline-6-carbaldehyde

"Tiangong Kaiwu" contains that the use of flax is quite extensive.
First, it can be used to make fabrics. Flax fibers are slender and strong, with natural luster, and the woven cloth is cool and breathable, and has good moisture absorption. The ancient ancestors used linen to weave cloth, and they wore clothes for a long time. In summer, it can remove the heat and make people feel more comfortable. And its fabric is durable, can be honed over time, and can be worn for a long time without damage.
Second, it also contributes to the paper industry. Flax fibers can be treated by specific processes to make high-quality papermaking raw materials. The paper made is tough in texture, and the fibers are tightly interwoven. On it, the ink rhyme is smooth, and it is not easy to spread ink. Many important ancient books, calligraphy and painting works, many of which were made of linen paper, have survived to this day, and can still be seen in the past.
Third, it is also a good material in the preparation of ropes. The rope made of linen has strong tensile force and excellent wear resistance. When sailing on a boat, it can be used as a cable to tie the boat to the shore, stabilize the ship, and not be afraid of the impact of wind and waves; in the construction of buildings, it can also assist in lifting heavy objects to ensure the safety of construction.
Fourth, the flax seeds can be extracted from oil. The squeezed oil is rich in nutrients and is beneficial for diet, cooking or medicinal health care. When cooking, adding this oil can increase the flavor of food; as a medicine, it may have the effect of nourishing the body. Although the specific medicinal effect varies from ancient prescription to prescription, it is also worthy.
All these are the main uses of flax, and they play an important role in the clothing, food, housing, transportation, craftsmanship and many other aspects of the ancients.

There are various ways to synthesize carboxymethyl ether. The ancient Fang family, in the art of Dan tripod, may have touched on it slightly, but its method is not complete. Today, according to the principles involved in "Tiangong Kaiwu", and described in ancient French.
First, based on alcohols. Take an appropriate amount of alcohol, such as ethanol, and put it in a kettle. The kettle should be cast with good iron and sealed tightly to prevent air leakage. With a specific medicinal primer, this medicinal primer may be an alum, and its nature is dry and can promote the reaction. Use charcoal fire to slow it down, and the size of the fire needs to be well controlled, not too strong or too weak. Vangze alcohol is easy to vaporize and escape, and if it is weak, the reaction is slow. After a long time, the ethanol molecules may change, and the hydroxyl group is removed, gradually forming the embryonic form of methyl ether.
Second, it is prepared by halogenated hydrocarbons and sodium alcohol. Select halogenated hydrocarbons, such as chloromethane, which are light and active. For sodium alcohol, it is prepared by alcohol and sodium metal. Sodium meets alcohol, such as a strong horse entering the pool, and the reaction is violent. Sodium alcohol and hydrogen are produced. When sodium alcohol is formed, chloromethane is slowly injected, and the two meet, such as the intersection of yin and yang, the halogen atom is combined with the alkyl group of sodium alcohol, and methyl ether is formed. In this process, pay attention to the cleanliness of the temperature and container. If there are impurities, the reaction may
Third, there are also carbon monoxide and hydrogen as the starting point. The two are introduced into the special retort in an appropriate ratio. The retort has a pre-set catalyst, which is mostly metal oxides and the like, which has a miraculous effect and can lead to the reaction between the two. Under the conditions of high temperature and high pressure, carbon monoxide and hydrogen are like being pulled by an invisible hand, combining with each other and gradually forming molecules of methyl ether. Although harsh conditions are required for this journey, the yield may be considerable.
All these synthesis methods have advantages and disadvantages. It is necessary to make a good choice according to the needs of the time, the amount of materials, and the advantages and disadvantages of the technology.

A piece of armor is covered by a layer of armor. This layer of armor is hard, like gold and stone. It can be damaged by the armor, and it can resist the invasion of the outside world. It is like the armor of a soldier, so that the armor can be protected in the environment of the world. That is, in the event of an attack by others, or the collision of foreign objects, the armor can be damaged and its life can be destroyed.
Furthermore, the size of the armor can vary. There are some small ones, and they are not small, and they can be observed by people when they walk on the grass; there are also big ones, which are small and eye-catching. This difference makes them able to be used in different habitats. The small can hide in the small, and eat and avoid; the large can hide their shape, and occupy a place in a specific environment.
The color of the armor is also rich and rich. Or the color is dark brown, the color of the soil and the skin is similar, and this color preservation makes the armor able to be in the surrounding environment, which is not easy to be affected by the sky; or the color, such as the light of gold, This or the need for courtship, to attract the color of the light.
The foot of the armor is strong and strong. It is enough to support it and walk on various terrains. The rocky road of the saki, or the soft grass, can be walked. And some of the feet of the armor have the ability to climb, and can be attached to vertical surfaces such as wood and wall, making it feel free to move.
Its wings also have special features. The armor has many elliptical wings, which cover the back flat, such as the tile of the house, to protect the membrane wings under it. When you walk, the elliptical wings and the membrane wings vibrate, so that the nail can rise in the air, soar in the air, and expand its activity.

The chemical properties of methyl ether are quite unique. It is flammable. Under suitable conditions, it can react violently with oxygen, bloom flames, and release a lot of heat. It is like a cloud fire, gorgeous and energetic. This is the reason why it can be explored in the field of fuels.
Methyl ether has a certain solubility and can blend with many organic solvents, just like the phase of water and milk, indistinguishable from each other. However, its solubility in water is limited, like a verdant self-separating, and it is difficult to completely blend.
Its stability is also considerable. Under ordinary environmental conditions, it can survive safely and is not easy to spontaneously produce chemical changes. It is like a Gaoshi hidden in the mountains and forests, quiet and calm. However, in extreme situations such as strong acids, strong bases or high temperatures, its stability will be shaken and corresponding reactions will occur.
Furthermore, methyl ether can participate in the substitution reaction, and some atoms or atomic groups in its molecules can be replaced by other atoms or atomic groups, just like the replacement of chess pieces in a chess game, and the layout will change accordingly. This property makes it valuable in the field of organic synthesis. It can be used as a raw material for the preparation of many organic compounds, just like the cornerstone of building a pavilion.
In addition, methyl ether also has a specific performance on the oxidation reaction. Under specific catalysts and conditions, it can be oxidized to form a different product, just like a gold stone calcined by fire, reborn and reborn, showing a new face, adding to the diverse pathways of chemical synthesis.

In today's well-being, the key to success is covered by a single word. The key to success is often due to the same reasons.
First of all, we should talk about the problem of supply and demand. If the needs of the next generation are ardent, and the demand is for supply, it will be necessary. If the Tao wants to make a difference, or if the family has a special merit in the fertile fields, it will be difficult to make a difference, and the city will become an incense, and the water will be high. On the contrary, if there is a lack of demand, and the supply is in demand, it will come down on its own.
Furthermore, the order also depends on it. The seasons are different, and the life and interest of the family are different. In the hot summer, it is easy to breed armor, and the quantity is low. For example, the supply of armor in the market is not sufficient, or it is slightly flat; in the cold winter, armor is not stored, and the supply is high.
There are also regional costs. In the place where there is a lot of business, there is a lot of demand, and the cost of labor is low, and the cost of armor is high or low; while in the wilderness, there is less need, inconvenient transportation, and the cost of transportation is also low, or relatively low.
And the quality of armor also affects its cost. Those who are of high quality, or born in a place where there is a lot of wealth, or have special education, good sex, and good use, their cost is higher than that of ordinary people.
Therefore, due to factors such as supply and demand, order, region, and quality, there is no determination as to whether it may rise or fall. If you want to know the situation, you can only get the general idea by checking the city and the degree.