Article 1: the wonderful use of cactus My grandmother lives in Xiaoshan reclamation area and has a chicken farm at home. Every time I go to her house, there are always chickens and eggs on the table.
One day last year, I went to my grandmother's house. I saw a plague among chickens there, and many of them died. My grandmother is too distressed to eat. I accidentally cut down a cactus and fed it to a plague-ridden chicken. Before long, we found that the chicken became energetic and had an appetite. After examination, the disease of this chicken was basically eliminated. Looking for the reason why this chicken recovered, everyone thought that cactus probably played a role. At this moment, I remembered the teacher once said that in China medicine, many plants can be used as medicines to treat some diseases.
In order to find out the real reason, my cousin and I began to investigate chicken farms. We know that many chicken farmers are also trying to cure diseases such as chicken plague with cactus.
So, what is the relationship between cactus and chicken plague? After consulting materials and visiting experts, we finally learned that the stem of cactus contains quercetin, glucose, resin, tartaric acid and protein. The stems and leaves also contain triterpenes, malic acid, succinic acid and 24% potassium carbonate. Quercetin and tartaric acid have antibacterial effects and are the bane of chicken plague. At this point, we understand why cactus can cure chicken plague, and we are also amazed at the magical effect of cactus.
In order to further determine the best usage and dosage of cactus in treating chicken plague, we did another experiment.
First, we took 20 sick chickens from the chicken farm and divided them into 5 groups with 4 chickens in each group. Take some fresh cactus, cut off the prickles on the epidermis, wash them, and squeeze them out with a juicer. Finally, a certain amount of cactus juice was mixed with a certain amount of feed in the dose cup, and then it was fed to chickens, which achieved different effects on different doses of five groups of sick chickens.
The experimental results show that the fourth group has achieved the best effect, that is to say, the treatment effect of taking 4 grams of cactus juice in the morning and evening is the best. From this, I think that if cactus is made into a drug to prevent and treat chicken plague, it will have a very good effect and reduce the pollution caused by synthetic drugs. Because cactus is easy to grow, it can also save a lot of manpower and financial resources, and it is popularized quickly and has excellent market prospects.
Chapter 2: Hairball trimmer Do you have a sweater at home? I think you must promise. Every household has sweaters now, but have you ever observed sweaters? If you look carefully, you will find that there are many small balls on the sweater, which are made up of the hairs on the sweater. This will not only hinder the appearance, but also make you feel very uncomfortable. If it is not handled properly, it will damage the whole sweater, which is even worse. At this time, it's the hair ball trimmer's turn to play. I saw that it was full of horsepower, rubbing the hairballs, and I saw that the hairballs were gone and the sweater was clean. Just when I was surprised by this hairball trimmer, a cloud of doubt suddenly rose. How to trim the fluff trimmer?
While I was wondering, my father spoke and asked me to find the answer myself.
I took out the instructions, studied them carefully and began to dismantle the trimmer. I turned off the switch of the repairer first, then unscrewed and pulled out the outermost outer knife net, and then took out the main round knife. The blade was extremely sharp, and then I saw the wind blade with four boards erected. When the switch is turned on, it will turn quickly. There is a huge gap at the bottom of the fan blade, and the hair ball falls from this gap and falls into the storage bin, where it is stored.
It turns out that this trimmer uses a motor to drive the blade to rotate, and the blade is connected with a round knife. When the blade rotates at high speed, so does the circular knife. The outer knife net separates the clothes from the round knife to prevent direct contact with the clothes from causing damage. There are many small holes in the outer cutter net. When the hair ball contacts the clothes, the hair ball extends into the outer knife net and is directly cut by the circular knife. The cut hair ball fell from the side of the round knife to the fan blade below. In the case of high-speed rotation, the four vertical plates on the blade "hit" the hair balls into the storage bin like playing badminton. During the experiment, I found a problem: as soon as I unscrewed the outer knife net, the maintainer stopped rotating. Is there no electricity? Then why did you turn so fast just now? After many experiments, I found that there is a button next to the fan blade, just like the lamp on the refrigerator, there is a button. This button will be pressed after the outer cutter net is tightened. When pressed to the bottom, the protection function is turned off and the trimmer works normally.
It turns out that a hairball trimmer still has so much knowledge!
Chapter 3: Call "Goo Goo" and "Goo Goo ……" I was doing my homework when I heard a strange cry from the kitchen. Born timid, I couldn't help but get a fright. I crept over to have a look, but found nothing suspicious. At this time, there was the sound of "goo goo" again, and I didn't notice that it was the pickle jar at the foot. Gee, how can the pickle jar bubble? Could it be that air went in and then came out of the water? However, the lid of the pickle jar is tightly covered.
Not a breath of air can run in!
When my sister came back from work and didn't enter the gate, I couldn't wait to run up and ask, "Sister, sister, why are there bubbles in the pickle jar?" My sister said with a smile, "If the vegetables in the pickle jar are soaked for a long time, they will produce an anaerobic bacteria, which can multiply in large quantities without oxygen." When fermenting, gas will be released, so bubbles will appear in the pickle jar. "
What? Anaerobic bacteria? I am most afraid of bacteria. They are all bad things. How do they appear in food? What should I do if I get sick after eating these things? My sister's answer can't satisfy my curiosity. I brought an encyclopedia to find the answer. Ah, the answer is here! It turns out that some bacteria (such as yeast and anaerobic bacteria) exist in nature, which can cause food fermentation, produce acid and release gas at the same time. They are harmless to human beings. I think: In the past, the steamed bread made by my grandmother was only the size of a fist. After steaming, it became the size of a palm, fragrant and sweet. Thanks to yeast! Unexpectedly, fungi that I hated before have played such an important role in our lives.
Just when I was about to get carried away, a big bubble suddenly appeared in the pickle jar. My sister said to me, "In fact, there are many wonderful phenomena in nature. As long as you pay attention to them, you will find them. " Look, that pickle jar called "Goo Goo" is a good proof.
Chapter 4: Why do people conduct electricity? It's finally the weekend, so I can watch TV. I'm so happy. I just listened to a whoosh and lay in bed watching TV.
The TV channel flickered on and off, and then my mother just came in to clean the room. I told my mother about this situation. My mother said helplessly, "I don't know what to do." Get out of the way I want to clean the TV. " "All right, all right." I said with ecstasy. "What's ready?" My mother looked at me doubtfully. "What else can be good? Television is certainly good. " Mom said, "Where?" "Well, just fine. Why? " "Good again." For this problem, I summed it up: as soon as mom touches the antenna, the TV will be fine; As soon as I let go, the TV broke down again
A question popped up in my little head: Why does the human body conduct electricity? After looking up a lot of information on the internet, I realized that there is electricity in the human body, so there are electrolytes such as sodium, potassium and calcium, and the electrolytes are in human body fluids. The human body contains a lot of blood, lymph and cerebrospinal fluid, mainly composed of water. Every cell in the human body is filled with water, in which various electrolytes are dissolved. These all constitute human body fluids. Body fluids exist in human body, accounting for a very large proportion, accounting for 70% of human body weight. When electrolyte is dissolved in human body fluids, charged ions are formed. Under the action of external electric field, these ions move directionally in body fluid to form current, and the human body also has conductivity and becomes a conductor.
Chapter 5: Why are shoes getting brighter and brighter? On Sunday, I couldn't help sighing when I saw my father's dusty shoes. "Well, it seems that I should be a coolie again." I picked up my father's dusty shoes, painted them with shoe polish and polished them carefully, thus recreating my youth. Why? I'm not confused. "
So I found a new pair of shoes to compare with the old ones. I first touched the uppers of two pairs of leather shoes and found that the surface of the new shoes was smoother than the old ones. After the old leather shoes are painted with shoe polish, careful observation shows that although they are much brighter, they are still not as good as the new ones. Is there a relationship between the brightness and smoothness of leather shoes?
I went to get a pair of old leather shoes, which looked uneven under a magnifying glass. Then I applied shoe polish to the rough areas 1 and 2 of the leather shoes, and wiped them carefully. The area 2 was not applied as a blank control. I found that the surface of 1 area is obviously smoother after wiping and brighter than that of area 2 in the sun. Why is there such a big difference between them?
So I went to ask my father that the surface of leather shoes is not absolutely smooth. If they are old leather shoes, they are even more uneven, so that they can't reflect light in a certain direction and look dim. And some small particles in shoe polish just fill the pits of leather shoes. If cloth shoe polish is used to make it more uniform, the surface of leather shoes will be smoother and more reflective.
Through the experiment, I finally know the secret of shoes getting brighter and brighter!
Chapter VI: The Secret of Iron Sheet We learned "Tin Pot and Pot Pot", knowing that iron pot is easy to rot in the soil, a small question mark popped up in our mind: So where does iron rust fastest? To this end, I made a small experiment after repeated thinking and research.
I prepared three small pieces of iron in advance. A place at low temperature-refrigerator; One is buried in the soil; The last one was put in salt water. Let's see which will make the iron rust faster. At the end of the day. Before I came to the refrigerator, I carefully took out the iron sheet and observed it carefully. The iron sheet hasn't changed at all. I then went to the flowerpot and dug out the iron pieces hidden in the soil, and the result was still the same. Finally, I came to the cup and took out the iron piece soaked in water, but there was no change at all. This annoys me: "Will it take a long time to have an effect?" I left the experimental site with questions. A few days later, I went there again and was surprised to find that the iron sheet in the soil was a little rusty, while the iron sheet in the salt water had rusted. What the hell is going on here? With this question, I turned on the computer and realized that it was the reaction of the primary battery, and the ions were conductive. Because two metals usually have different activities. Take iron and copper for example. Because there is moisture in the air, water usually contains acidic gases, such as carbon dioxide. When the iron sheet encounters acid, it loses electrons and becomes iron ions. The electrons move to copper through the metal, and then are reduced to hydrogen to form primary electrons. This reaction is called hydrogen evolution reaction. This corrosion of iron is called electrochemical corrosion, and the electrochemical corrosion rate is faster than that of general oxygen reduction corrosion.
Experiments and data prove that salt water will make iron rust faster!
Chapter 7: Why didn't the inflatable hole of basketball leak? I went to play basketball before and found that the ball was flat, so I ran home to inflate it. At this moment, I found a problem!
I found that the hole for pumping basketball was not blocked. At that time, I wondered why there was no plug If you inflate the ball, not all the air leaks out! I studied basketball repeatedly with doubts. I put my ear on the inflatable hole, listen carefully to the sound of air leakage, and feel it with my hands. I really can't figure out how it didn't leak.
With this question, I asked my parents. They all shook their heads and said they didn't know Curiosity drove me to find out the truth, and I couldn't wait to open the encyclopedia. After a careful look, I didn't find out why the inflatable hole of basketball didn't leak. I turned on the computer, eager to find the answer. After half an hour, many things will happen. I finally know why.
In fact, because its eyes are a kind of rubber pad, when it is inflated with the ball needle, the rubber pad will be washed away by the huge pressure of the air pump, and when the air pump is pulled out, the gas in the ball will give the rubber pad an unexpected force and make the rubber pad return to the closed state. Therefore, basketball looks airtight at first sight, unless its rubber pad is worn out and can't play a sealing role.
I see. I'm so happy! I learned new knowledge today!
Chapter 8: Why gasoline is not suitable for wiping hands? Some people will think of scrubbing with gasoline, because gasoline is stained with oil and it is difficult to clean. Because gasoline is a very good solvent, it is very easy to dissolve all kinds of oil, so it is natural to handle this kind of oil stain on your hands, which is much more labor-saving than washing with water.
The skin on our hands is covered with a thin layer of oil, which can moisturize and protect. It is precisely because gasoline is very easy to dissolve oil, so when you scrub your hands with gasoline, the oil on your hands is gone, and the oil on the surface of your hands is dissolved by gasoline, so you are "washed" clean. Not only that, because the molecules of gasoline are very small, it will push luck into the skin and "pull out" the fat in the surface cells of the skin, taking it with it. Therefore, if you often scrub your hands with gasoline, the skin on your hands will lose the protection of sebum, become rough, dry, and sometimes dry, causing bacterial infection. Moreover, gasoline also contains benzene, toluene and other organic substances, which are toxic to human body. Regular contact with gasoline is not only irritating to the skin, but also very harmful to human health.
Therefore, if you get oil on your hands, you can wipe off some oil with paper first, then wash it with soap or detergent several times, and you can also clean the oil.